EARTHQUm OF NOVEMBER 27, 1852
CA: 23:45 (L)
EPXCENTRAli INTENSITY: V(MM)
EVALUATION :
The earthquake of November 27, 1852 is centered near Eater, New Hampshire (Fiqure 2.5.2A-15). It was felt over a 9,900 square kilometer region from the Cape Ann region north to Saco, Maine. The 'maximum effects , Intensity V(MM), were observed near meter, New Hampshire.
PERTINENT ACCOUNTS:
Daily Morning Chronicle, Portsmouth, New Hampshire, November 30, 1852
"!The Emthqwke, on Saturday night, mi likened & sbme persm in this city, who happened to be up and doing, tu the m&ng of a chinmey on firs-others supposed it to be the hemy &Zing of a toaded wagon over a paved street.
* "It tlas supposed by some gentZemen at Kittery Point tu be a stecmtboat 5n the hbor letting off stem.
"!?he SaZem Register calls it a 'smart sbck, ' and says, '2% nrmbZing noise and the jmring of the windaws cmd doors were very perceptibze fop $he space, some say, of kZf a minute. Some fuithZess ones attAbute the shock to the eqZosim of a powex-miZ Z somazhere, '
'% in GreenZmd says the earthquake shuok her house wad those of her ne;ghbors very serrsibZ3.
"ike Boston JotazaZ stqs .i.t was feZt at Exekr where it shook the doors and windows viokntty, and "A very heavy eqtosim startzed our citizens at 25 minutes before 12 o 'cZock, SaturcZcry night. It ccme frm 'a norther Zy direction adwas probabty from the Beter Pmer Milts, though no for me^ eqtosion of these miZZs ever produced here half so severe a corrcussion, or mything Z Maine Democrat, Saco, Maine, December 7, 1852 "The Earthquake. -The shock of wa ecrrthqucrke om felt here on Sm%~drry etrening Last, at fAirQ-five minutes after eZeven o'ctock. i%e shock here wczs not severe. We were standing near a stove at the time, artti did not pmeive my jar, but aZy he&d the noise *Zing off in the distmrce in a ossterty direction, attd no apparent we visibte. The night was ctem, the moon bright, and the air, stitt. ''fie force of the earthquake was ev.identZy to the west of Portmath. At Beter, it was felt with much violence. In Neobwypo~ the BeruM notes the nririute the same crs at Portsmouth, Tirere it was thought it lasted nem2y tm minutes, and ws mch more severe than ut beter. In Satan, it was also noticed, but. it was tess vwZent. No mention $8 made of it SOU*^ of SUZ~.~' EARTHQUAKE OF DECEMBER 11 1854 CA: 00:30 (L) EPICENTRAL INTENSXTP: IV-V (MM) LOCATION: 43.ON, 70.m EVALUATION : The earthquake of December 11, 1854 is centered in southeastern New Hampshire (Figure 2.5.2A-16). The maximum observed intensity is at . Newburyport, where there were unconfirmed reports of articles shaken from shelves in some cases. The distribution of intensities within the isoseismal region indicate an epicenter within the area about Exeter, New Hampshire. The earthquake was felt over an area of 4,100 square kilometers. PERTINENT ACCOUNTS: Exeter News Letter, The, Exeter, New Hampshixe, December 11, 1854 "Emthquake -- T3tis Monday morning at seven minutes before me o'ctock, a smart shock of an emthqauzke was experienced in this em. The motion of the ethws quite perceptibze, und its acting upa ,%iture and Zoose widows and doors, was arrything but rneabte to weak nerves. The mCse attending, was Zike that of the swift approach 9f u heavy c&uge on frozen pound, hit wkn the shock appemed (sic) to be hnediutety beneath, it was much heavier." Journal, The, Portsmouth, New Hampshire, ~ecember16, 1854 "fie Earthquake lrUn Sczturduy (sic) night last, d baZf past 22 o'cZock, a shock of mr ecrrthquake 008 sensib23 felt in this city and vicinity. Ths mtchen (sic) at the fluv3 Ymd khought *hey saw Zigh-ing at the time and regarded the noise as thunder. Some of our city watchmen who were at the &im in Market Street, heard the conmencement and passing crwcry of the sod. It seemed to them Zike taw distinct eqZosiw. --probably from the sd coming through [sic) different avenues between high buitdings. It rattled t?te door shutters near them. "The flmbqport HemM says it was sensibZy felt there at the same hour. The houses were shaken and the crockery uare in some houses was thran dom from the shetves. "It was not felt in Satem. The Saco papers make no mention of .it. Nor do those of Mmhes*sr and Cancord. " ''Quotes Ezeter Mar Letter "The direction of t72e sowrd .in Portsmacth and wing wcrs appcrrmtZy from the soueheast to *he nortbe8t. "liz CreenZand ad in Epping it kxzs as severe23 feZt. As has usuaZZy been *he case, rain fez2 the nest day. " EARTHQUAKE OF OCTOBER 17, 1860 CAI 11:15 (GMT) EPI-RAL INTENSITY : VIII-XX (MM) LOCATION: 47.5N, 70.1W EVALUATION : The earthquake of October 17, 1860 is centered in the St. Lwrence River Valley, northeast of Quebec city, near La Malbaie, about 510 kilometers from the site. The earthquake was felt over a 1,700,000 square kilometer region. It was felt throughout much of New England. Based upon intensity attenuation characteristics (Table 2.5.2-71, the intensity at the site is estimated at IV-V (MM). EARTHQUAKE OF OCrOBER 20, 1870 CA: 16 :30 (GMT) EPXCENTRAL INTENSITY : IX(MM) LOCATXON: 47.4N1 70.5W EVALUATION : The earthquake of October 20, 1870 is centered in the Baie St. Paul region, northeast of Quebec city about 500 kilometers north of the site. It was felt over a 2,500,000 square kilometer region including all of New England. Based on intensity attenuation characteristics (Table 2.5.2- 7) , the intensity at the site is estimated at V(MM) . PERTINENT ACCOUP3TS : Daily Free Press and Times, The, Burlington, Vermont, October 21, 1870 (Dispatch from Newburyport, Massachusetts) "At twenty n6mtes to WZve, a slight jm, was feZt in thb city, which om ahost imedicctety foltmed by a &Zing, ohich bted half a minute, jdrg buitdings, ringing doorbeZZ8, and shakhg gtobes from chcmdetiers. Irr mmry imtunces the ocrmpants ran into the streeta from dwetlings. It seemed to pass in a south-westerly direction. Salem Register, Salem, Massachusetts, October 24, 1870 "At SaZem, . Mtzssachusetts, 'soZid tmd most substmztia2 btddCngs felt the shock, heatnj tabtes and dishes wpe sensibty shaken, horse's beZZs were no?g, clocks were stopped in sever41 instames, und hanging implements tribrated muteriuZZy. ' " EARTHQUAICE OF MAY 12, 1880 CA: 07:45 (L) EPICENTRAL INTENSITY : N-V (MMJ LDCATION: 42.7N, 71,OW The earthquake of May U,1880 is centered in northeastern Massachusetts (Figure 2.5.2A-19). The maximum effects are noted at Graveland, Massachusetts. me epicentral intensity is IV-V (MM) . The fclt area is 4,600 square kilometers. PERTI- ACCOUNTS: Monthly Weather Review, May, 1880 t'Newburyport, Muss., 12th, 7: 45. a.m., (1 vioZent shock, houses shook in mmry parts of the city, the accomptmying miss ~esembting that of o hemy bmwZ ~oZZingover a chcbzber floor. Shocks were feZt at the same time in IlaverhiZZ, GrooeZand and surrounding tams. Billerica, Mass., 12th, slight shock at 7:30 a.m. " Newbuxyprt Herald.. Newburyport, Massachuset*, May 13, 1880 Note : At 7:45 A.M., May 12, 1880 an earthquake was felt at some places and not at others. People had difficulty recognizing it as an earthquake, it being mare noise than motion. It was felt at Byfield, West Ne~bqrBaverhill, Groveland; at Amesbury the earthquake was strong enough to rattle crockery in several houses. New York Times, New York, New ~ork,May 16, 1880 "The Satem Ws.) Gazette gives eome further information concerning the earthquake shock which visited BQStem Mtzssachatset~s about 7:45 o'cbck m Wednesday mornGzg. It says: 'We hem reports of it in a22 the tams between Satem and Whyport. In Satem, the shock wcrs feZt in aZZ parts of the city. The accqcmying sod ws by some tharght to be thunder; by others, an srptosicm as of rockbtcrsting; cmd mare generalZy as the &Zing of a wagon. In NwJbu~~port,the shock was felt in the shaking of mockery mrd furniture, mrd in smhomes s~tPdi?qLike persm moving in djoining mms. ZMn Merrimac and Ames-, from Ceorgetam and RotlZe,~we have rrimitur reports. At Buverhi ZZ an exptosion uas hemd, the uir vibmted, the eorth t~embled,peopZe wera swayed to und fro, crockery was shaken, wd other signs of subtemuneun d CA: 10:40 (L) EPICENTRU INTENSITY: VIM) LOCATSON: 43. IN, 70.m EVALUATION : The earthquake of August 30, 1905 fs centered in the vicinity of Ports- mouth, New Hampshire and Ki ttery , Maine (Figure 2.5.2A-26) . f t was not reported felt in Massachusetts. The epicentral intensity is V(MM) . The felt area is 3,600 square kilometers. Newspaper reports from the Portsmouth aerald (August 31, 1905) that "if .i.e nunoped that chimnies were shaken dan in North Rcnptm and GreenZmrd" are not confirmed by The meter News Letter (August 31, 1905) which indicated that the earthquake was not xeported from North Hampton, Greenland, Seabrook as well as other localities. Even though The Exeter Hews Letter states explicitly that the event was not reported from Seabrook, iit is probably more realistic in view of the relatively short epicentral distance to.assume that the event was felt mildly, i.e. with an Intensity 111. . PERTINENT ACCOUNTS : Exeter New Letter, The, Exeter, New Han@shire, September 1, 1905 'tWest Qphg - September 4 -- 'At exuctty 5:39 p.m. Cumbridge time, on Wednesday of htueek a distinct ecrrthquake shock was felt here. Windows aM* dishes rattte vioZentty, ohiZe the report was deep, tar pitched, weird and Zong. It wt have kted fuZZy eight or ten secads, time mugh for me to wZk frm a rear room in a Zurge house aut through $he front door and on to the b. I wos on +he Zcwn before the rambling ceased. We have had a dozen seismic tremors in southem Bm Hampsh;~e since forty yms; this hajever if memory serves me, was the most pmlrnced of ft&rthqwke not reported from: "Stratham, me, Beemont, Ryrnond, Nottingham, Kingstm, Greentmd, North Bnmpton, Bcmpton, Seabrook, DmrYiZZe, Epping. " Haverhill Evening Gazette, Haverhill, Massachusetts, August 31, 1905 rrPoz%srnouth, flew LImnpshire, August 31 -- A 8eAes of eurthquakes, the most severe ever ezperiertced in this sectiona which, at about 5:35 to 5:40 o 'clock yesterday afternoon were felt from the v<&nity of mter to beyond Biddeford, Maine hod their center of disturbmce in this city, rmd were so severe that people, fe&ng the shakinc houses and etores ~0uZdccZ%se, in te~~orout of doors. fie scene in the slwpping district ms exciting for a nrmrber of &tea. For several seconds a tremor ran through the ci.ty, mrd Wi&6, dishes, pictures, other artcctes rattled. me ecperience of other ptaces m the cocrst line and for. a fat miZes irward was mZy .in a less degree. fie shock seemed ito trmeZ fmwest .to eat. No damage is reported. "The shock here cone at St35 tmd it rn accanrpunied by a toud mpmt as of thunder, fuZZmed by a nmbting. There oere the distinct shocks, oach with its own dte-- 'At Bdmptm the shock was very plain, but it was greater twmd this city, for Greentand was more affected. On the other side of the &ty by Kittery and dowrr b York Ct was plain23 heard, bu$ at Ventworth at Nmcastls the shock was not hemd at aZ2. Portsmouth Berald, The, Portsmouth, New Bampshire, August 31, 1905 ttl%ree (3) Earthquake Shocks rpCitizensof Portsmouth, flew blmpshire, Kittery mrd Biddeford, Maine get a scare. "A series of ecrrthqudke shocks, the most severe ever qerienced in this sectiun were felt here late yesterday afteman. Buildings tmmbled perceptibly, dishes were shaken from shelzres, cmd in mcmy cases peopte rushed in terror from their beginto the street. "There were three distinct shocks. In each instunce tk trem we accqan Vwee shocks felt - accmpaxied b3 heavy nmrbtitsg. m.irstshock St38 p.m., other hm in -id succession. '%s the duors and windows were mzttled by the vcbratias of the eurth anti the Z.i.gh*er bric-a-bruc came tLrmbZing dam from mZZs and m~tepieces,peupk rcm out of doors in cansiderabte atm. nB.iddef ord, Maine "A slight shock fett. DkstinctZy feZt in over2y.ing districts. ~ccqmiedby a sdZike the nmtb2ing of distmt thrmder. rll%ee&@uake shock was the mast sWtZing, being so violent cur to shake pictzees fran *he woZZs of houses in the South End. It is rrmrored tht chhhs were shaken doon in North Hmpton mrd GreenZmrd. 'rSded 2;ke heavy object fat Zing and ~oZlingor like azpZoshn, Ectipse of sun in A.M. before quake, thunder stom and Z{gfrbing afser quuke . " EARTHQUAKE OF OCTOBER 16, 1907 CA: 00:10 (Id) EPICENTRAL INTENSITY: V(MM) LOCATION: 42.8#, 71.OW The earthquake of October 16, 1907 is centered in northeastern Massachusetts (Figure 2.5.2A-27). me epicentral intensity is V(MM). The felt area is 5,600 square kilometers. Even though no explicit felt report can be found for Seabrook, it is assumed in view of the estima'ted epicenter in the vicinity of Haverhill, that the earthquake must have been felt at Seabrook (Intensity III-IV) . PERTINENT ACCOUNTS: Portsmouth Daily Herald, Portsnouth, New Hampshire, October 16, 1907 "Quake shock felt 'Tuesday Even ''me shock lasted for several seconds, seemingty, und the heavy &Zing ended in cm apparent eqZosw~. "At Deny d5shes =re rattted on sheZtrss and table, but no special damage was reported. " EARTBQUAKE OF JANUARY 7, 1925 CA: 13:07 (GMT) EPICENTRAf, ZNTENSITY: V (MM) LOCATION 42.6N, 70.6W EVALUATf ON: The earthquake of January 7, 1925 is located in the vicinity of Cape Ann, Massachusetts. The epicentkal location and intensity were determined by Porter (19241 . The isoseismal map (~igure2.5.2A-29 3 is constructed from data after Porter and additional newspaper investigations. The earthquake was felt over an estimated area of 29,000 square kilometers. The amximum intensity is V(MM) at Cape Ann and vicinity. At Hampton, New Hampshire, a news item in the Manchester Union of January 8, 1925, describes the effects as follaws: "Reporb from Ilqbn and Stratham state tbt the shock was distinctZy fett $here, causing dishes crnd other contents of the house eo rattte, und mmry of the houses oere shaken. 'I PERTINENT ACCOUNTS : . a Poxter, William W. I1 (1924) n2'7ae region laram to be affected by the earthquake of Jwzzmy 7, 1925, cons is*^ of a roughly senri.circuZur mea ZMted on the east by the AtZantic Ocean, and an the south, vest, wad north by a circuZar me passing frm a short distance south of Providence, %ode Island, ncrth- , northwest to Worcester, Mcrssechzlsetts, tu Fitcltbtcrg, to Mmhester arzd ~ochester, Netl Bcmrpshire, and to the seacoast mar Kennebunk, Maine, &out *him-eight miZes south of Port Zand. The position of the inner isoseismic Zine "dhost wziuersaZ2y the shock was compared & the vibrations produced by a motor tncck be5ng driven over rough pavement. In upproaching Cqpe Ann, $he size of the truck altuded to increased, wad un the Cqe, the cumensus of opinim was that the vibrations were much bo severe $0 bebeen produced by a Wck. "At one point on the Cape coat wcrs being unlouded fium a trmck at the $;me of the earthquake, and a verbat report stated that a concussion was produced which feZt as though the truck hud mashed into the house. In BaverhiZZ a contrast.i.ng report s.tPted *%t the disturbance aounded as though a truck had bumped ineo the houae, but that the jar was instiffi~6ent. frIntermediate Intensity: +, Ross$-Fore2 ScaZe. Next tu Cape Ann, the most severely affected regions were Merrimnck VuZZey in ncrtheustemz Nussacksetts, and the shore d rlThe direct.ion of movement of .th distwbance is .in most cases very wguety dgfined. The one cutstding indication of directia occurred in HaverhiZZ, where sixteen rolls of congoZeum rugs were overturned ern the east-southeat. These rotts, measuring nine feet in tength, and trith a dcameter of about a foot, were free to fat2 in my direceion except tmard the south. The three men who are present ut .the time of &he ehquake were positive that tth dsrectim of fat2 of a22 the mZZs wcrs Prn the east-southeast. So far' as .is fcnowrr, no fked objects were dispkced in this area. 27~~eport of a broken mte~min in 8merhiZZ due to th earthquake is wtfmmied. EARTHQUAKE OF MARCH 1, 1925 CA: 02:19:20 (L) EPICENTRAL INTENSITY: IX (MM) LOCATION: 47.6Nf 70.1W EVALUATION : The earthquake of March If 1925 is centered in the La Malbaie region, northeast of Quebec city, 525 kilometers north of the site. It was felt wer nearly 5,000,000 square kilometers. The major damage occurred in the St, Laktr~ceRiver Valley, particularly on soft alluvial soils. Xsoseismals (Figure 2.5.224-30) indicate that the intensity at the site was about N (MM) . PERTINENT ACCOUNTS: The Union, March 2, 1925, Manchestex, New Hampshire nAZZ sections of Bqton Beach were in the path of the earthqucrke, Satmky even5ng arowzd 9:20. IOo damage w reported. At the Coast Guard station a the North' beach, the shock olzs on23 sZightZy fett. The captain of the guard said the ocean ws und ?%t (sic) Elampton Bed, pup Ze Ziving in a cottage reported that dishes shook in the cqbwrds md a pan under the sink feZZ to the floor. !T?tey were not mare that it ws mr earthpuke mtiZ a tittle later when Cnfomned over the did." EARTHQUm OF OCrOBER 9, 1925 CA: 13:55 (L) EPICEKFRAL INTENSITY : VI (MM) LOCATION: 43.?N, 71,IW EVALUATION : The earthquake of October.9, 1925 has its epicenter in central New Hampshire (Figure 2.5.2A-31) . The epicenter is poorly defined and the published location of Sdth (1962) is retained. The epicentral intensity is VI(MM). The felt area is 17,700 square kilometexs. The earthquake was not felt at localities such as Sanford and Kennebunk, Maine, and Portsmouth, New Hampshire, and is inferred from the isoseismal. map (Figure 2.5.2A-31) to have not affected the site. PEmINEWP ACCOUNTS: Concord Daily Monitor, Concord, New liampshire, October 9, 1925 "Rn earthquake, sZ5ght in intensity, but gmeraZZ$ fett throughout the Merrimack VaZZey, the Pimipesaukes Lake region und in the nori9zeustemt part of the state ah9 the Maim border, LM~felt today in Cacord by eevemt persons. No huge beyond the breaking of winda, glass !n Ossipee, the tzonbZing of chimneys in tuo or three towns, cmd the dtrmping of canned goods from sheZves in Ossipee and Effingham Fans stores, wcrs reported. EARTFIQUAKE OF MARCH 18, 1926 CA: 21:09 (L) EPICENTRAL INTENSITY: V(MM) LOCATION: 42.8N, 72.81 The earthquake of Wch 18, 1926 is centered in southern New Hampshire, near the town of New Ipswich (Figure 2.5.2A-32). The epicentral intensity is V(MM). The felt area is 4,800 square kilometers. Published research by Neumann (1925-1927) indicates that the felt reports were mainly in south-central New Hampshire and adjacent Massachusetts. There is no ' indication that coastal localities fn southern Maine, New Hqshire, or northeastern Massachusetts reported the shock. PERTINENT ACCOUNTS: Manchester Union, The, Manchester, New Hampshire, March 19, 1926 ft&uthern IV. B. Shaken By StCght Eculthqmke ''SZight earthquakes are reported to beoccurred in fbur sectimrs of southern Nm Bumpshire yesterday afternoon. "%am and cities d'fec~%dby the tremblor are Mmchester, Nushun, Milford, Amherst, ViZton, Munt Vemn and GreenfCeZd, according to dispatches received Zast night. "A22 the shocks uere felt at 3 orcZock, or shortly after. WiZtm, Milford, Amherst and Mont Vemare grouped $n a semicircZe about 12 miZes from Nashua, whiZe GremfieZd is 25 miles from the Gczte Ci%. nReport;s indicate tbat the 'quake did not last the same Zmrgth of time in each of the cities und tams. In MiZford it lusted for 25 minutes. (sic) &zwhester 20 secmcds and other pZaces feZt it for fizzy haZf a minute. "&mhester mrd Noshwz felt mZy brief shocks, whiZe lcfiZford ad surrounding tams experienced the temblor for at teat I5 seconds. EARTHQUAKE OF DECEMBER 20 AND 24, 1940 CA: 07:27:26 (GMT) (DECEEBER 20) CA: 13:43:44 (GMT) (DECEMBER 24) EPICENTRAL IWlZNSf TY : VII (MM) LOCATION: 43.8N, 71.3W EVALUATION : 30th earthquakes are centered near Ossipee, New Hampshire. The isoseismal map (Figure 2.5-2A-37) shows that the Intensity VII(MM) effects occurred at T~mswotthand Wonalancet, New Hampshire. Damage of Zntensity VI(MM) was noted in numerous localities in central New Hampshire and western Maine. The shocks were felt ovex an estimated area of more than 786,000 square kilorneters.including all of New England, New York, and New Jersey. The intensity at the site, as shown by the jsoseismal map, Figure 2.5.2A- 37, is IV(MM). In the vicinity of the site, at such p1aces.a~Portsmouth . and Durham, New Hampshire, and Amesbury, Newburyport, Salem, and Gloucester, Massachusetts, the earthquakes were felt by many people, and were well accompanied by the creaking of buildings and the rattling of &.shes, windows, and doors. EARTHQUARE OF JULY 29, 1954 CA. 19:57:06 (GMT) EPICENTRAL INTENSITY: V(MM1 LOCATION: 42.78, 70.7W EVALUATION : The epicenter of the earthquake was located off the coast of north- . eastern Massachusetts, about 15 dies south-southeast of the site. The epfcentral lotation was detedned from seismograms recorded at Weston Obsezvatory, Weston, Massachusetts, and at the ward Seismograph Station, Hanard, Massachusetts, The earthquake was felt from Lynn, Massachusetts, on the south to Kittery, Maine, on the north, and up to 20 miles inland over a 4,100 square kilometer area. The quake was most strongly felt along the Massachusetts coast from Gloucester to Salisbury. In this area there were a few reports of small objects overturned, dishes and glassware knocked over, and clocks stopped iNewbuqp~tDaily News, ~ul~30, 1954: Gloucester Daily Times, July 30, 19541. Outside of this area, the earthquakes Is effects consisted most19 of dishes, windows, and doors rattling. Based upon press descriptions and reports collected by Weston Observatory *rough a canvass card survey, the intensity of this earthquake in the vicinity of the site was 111-IV (MM) . EARTHQUAIE OF APRIL 26, 1957 CA. 11:40:06 (GMT) EPICENTRAL INTENSITY : VI (MM) LOCATION: 43.6N, 69.8W EVALUATION : The epicenter fox this event was located off the coast of Maine, about 71 miles northeast of the site. Slight damage of Intensity V to VI(MM) occurred in the Portland area (Figure 2.5-2A-39). The quake was felt aver 82,500 square kilometers including most of Massachusetts, Vermont, New Hampshire, and southern central Maine. The isoseismal map prepared by the United States Coast and Geodetic Survey (see Figure 2-5.2A-39) shows that the intensity at the site was no higher than IV(MM1. EARTHQUAKE OF OCTOBER 16, 1963 15:31:01.8 (GM!P) EPICE- INTENSITY: V (MM) LOCATION: 42.5N, 70.W EVALUATION: The epicentex for this earthquake was located in Massachusetts Bay, southeast of Cape Ann about 27 miles southeast of the site. The earthquake was felt over approximately 17,800 square kilome.ters of northeastern mode Island, eastern Massachusetts, southeastern New Hampshire, and extreme southwestern Maine. von Hake and Cloud ' (1965) list this earthquake as' Intensf ty VI (MM). Tney report damages at Somerville (fallen plaster - Intensity VX IMM) and at Winthrbp (cracked windows - Intensity. V(MM)) , but these reports "were not substantiatedn by Breitling (19651. The one instance of damage in Somerville apparently occurred in a building which was either poorly constructed ox had undergone settlement prior to the earthquake. The Coast and Geodetic Survey report states that "cracks in the foundation and pantry became largemwhich indicates that the cracks were pX'eSe!nt prior to the earthquake. Breitling's isoseismal map (Figure 2.42A-40) shows a maximum intensity of fV (MM) on land. Analysis of press reports and of a canvass card survey conducted by Weston Qbservatory show that the maximum effects at many towns in eastern Massachusetts consisted of houses rocked, windows and dishes rattled, and knicknacks mrown from the shelves (Amesbury and Methuen) . Based on Breitling's investigations and reports collected by Weston Observatory through a canvass card survey, Me intensity of this earthquake in the vicinity of the site was ZV(MM) . EARTHQUAKE OF OCrOBER 30, 1963 17:36:57.9 (GMT) EPICENTRAL INTENSITY: IV-V(MM) LOCATION: 42.7N, 70.W EVALUATION : The epicenter for this earthquake was located in northeastern Massachusetts, about 13 miles south of the site. The epicentral location was determined from seismograms recorded at four stations of Weston Observatory's New England Seismic Network (stations are located at Weston, Massachusetts; Berlin, New Hampshire; Milo and Machias, Maine). The earthquake was felt in northeastern Massachusetts from north Boston, ad in adjacent portions of southeastern New Barnpshire over a 5,900 square kilometer area. A questionnaire canvass conducted by the we$ton Obowatory indicated that the intensity of the earthquake was IV(MM). However, the press report for a few instances of craked plaster andather minor damage in the Ipswich-Rowley area (~althEvenifig News, October 31, 1962) indicate that the intensity may have been as high as V(MM) near the epicenter. ' "Th intensiQ of the tremor was feZt par$icutarZy in Jpmich md in Rmley. HousehoZders in RawZey reported that dcshes rattled cmd Zmp fbtures szdffyedr' (Salem Evening News, October 31, 1963). Based an the press descriptions and questionnaire survey conducted by Weston Observatory, the estimated intensity of this earthquake at the site w'ks IV (MM). EARTHQUAKE OF OCTOBER 21, 1971 00': 54 :46.2 (GMT) EPIC- INTENSITY: V(MM) IDCATION: 42.7N, 71.1% EVALUATION: The earthquake of October 21, 1971 was reported by Coffman and van Hake (1971) as felt in several Merrimack Valley communities at Intensity V(MM) . It was not reported felt in any coastal New Hampshire area. PERTIBlENL' ACCOUNTS: Cof fman and von Bake (1973) f'Vortheustemt Massachusetts. me sbcE sMf ted object8 and shook buitd{ngs ut a few towns in mrtheustem Massachusetts. Int. V at Andatrep, BiZzerica, Methuen, Newbuyport, und Te~ksbwy. Int. IV at Georgetown, CZoucester, Grove.hd, Ipswich, Lammce, Mehac, MiddZetm, North Andover, Reading, and Wakefield, MQSS., cosd Satem, N.8. In*. 11 at LoweZZ and WiZmingtm, Mass. " -s, Nathaniel , -1s of Portsmouth, Hampshire, Exeter , C. Norris Printer, pp . 151-152, 195-196, 1825. Allen, Rev. James, cited in Richard D. 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New Hampshire Gazette: Portsmouth, New Hampshire, July 29, August 5, New Hamshire Patriot: Concord, New Hampshire, August 27, 1846. New York Times: New Yark, New York, May 16, 1880. Newburyport Daily News: Newburyport, Massachusetts, July 30, 1954, Newburyport Herald: Newburyport, Massachusetts, November 13 and 16, 1810. Newburyport Herald: Newburyport, Massachusetts, July 25, Newburyport Herald: Newburyport, Massachusetts, my 13, 1880. New York State Electric ti Gas Corporation, NYSEcG 1 and 2, Sttkvesant Nuclear Station, March 1979. e Parkman, (Rev. ) , Ebeneezer , "The ~iaryof Ebeneezer Parkman, written at Westborough, Massachusetts," Proceedings of American Antiquarian Society, 71, Part 1, p- Parson, Langdon, History of e,=Hempshire, Concord, Rumford Printing company, 1905. Plant, Rev. Matthias, Ministers Recard Book, Manuscript in possession of the St. Paul's Episcopal Church, Newbury, Massachusetts, cited with permission, "Ministers &cord and Diary of Rw. 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Union, The: Manchester, New Hampshire, March 2, 1925. von Hake, Carl A., and Cloud, William K., Unjted States Earthquakes 1963, U.S. Department of Cmmerce, U.S. Government Prhting Office, 1965. Waldeigh, George, NotableEventr in the History of Dover, Rampshire, The Tufts College Press, 1913. Waldron, Richard, "Letter to Mad. Waldron dated January 12, 1728, written fxom Portsmuth, New Hampshire," Col-le&ans- of Massachusetts Historical Society, Vol. V, 5th Series, p. 232, 1878. Weekly News-Letter, The: Boston, Massachusetts, November 16, 1727. Weekly Ftehearsal, The: Boston, Massachusetts, September 11, 1732. Weston Geophysical Research, Inc., Pilgrim Station Unit 2, Preliminary Safety Analysis Report, Docket ~o.50-471, Amendment 35, June 1, 1977. Williams, Wger , "Letter to John Winthrop (dated) ~une1638, " Collections of the Massachusetts Historical Society, Vol. VI, 4th Series, pp.-- 229-230, 1863. Williams, Samuel, "Observations and Conjectures bn the Earthquakes of New England,", Memoirs of the American Academy of Arts and Sciences, Boston, Massachusetts, pp. 260-311, 1785. Winthrop, John, Journal entry cited in HoS~ner, James Kendall, (ed. 1 w&,rop1 s Journal History of New England, 1620-1699, Vol. 2, pp. 270-271, New Yark, Bames & Noble, 1959. WinMrop, John, "A Lecture on Earthquakes Read in the Chapel of Harvard College in Cambridge, N.E., November 26, 1755, Boston, Massachusetts, 1755. Winthrop, John, wAn Account of the Earthquake Felt in New England and the Neighboring Parts of America, on the 18th of November 1755, In a Letter to Tho. Birch, D.D. Secret, R.S. by Mr. Professor Winthrop of Cambridge in New England," Philosophical Transactions, Vol. 50, pp. 1-18, 1757. TABLE 1 AFTERSHOCKS OF THE EARTHQUAKE OF NOVEMBER 9, 1727 FROM THE MINISTER'S RECORD (1727-1748) OF THE: REV. MATTHIAS PLANT DATE TIME INTENSITY* YR MO DA (LOCAL) EVUUATI ON ( MM) TABLE 1 (cont'd.1 DATE TW INTENSITY* YR MO DA (LOCALI EVALUATION (MM) J SP90 ZZ EO 8VLT d 0097: L'I ZT LVLT d OE PO V't ZT LDLT d OOPZ Lt TO LPLf d ET 80 9VLT. d LZ SO PVLT d PZ SO PPLT d. TZ 80 EVLT d PZ 60 ZVLT d 80 PO Z'trL1: d SO 10 TDLT d 62 10 TPLT d SZ 17: 'OVLT AI Ot 60 LELT 2 LT 10 LELT d EZ TT 9ELT AX - cz TT 9~i7: d ZT OT 9ELT d PZ LO 9CLT d ET 20 9ELI d TO VO 4ELT d ET: to SELt d LZ 17: VELT d OZ 07: PELT d OT LO PELT J LZ TO VEL'I: d 01: 07: CELT 3: ZT EO CELT d OT TO EEL1 d 006'1: 8T 20 ZELT AX ' OOCZ ZT OT TCLT d OOtZ TO 60 TELT d 9T LO TCLT 3 0060 80 90 ICLT d OOLT 81 EO TELT AX OOVZ ZZ TO TELT AX OO6T ZT TO TELT OK (w)NOILYn'lY~ ('TV30'I> va 'ZIX +iGISNBZNI SPlf BS mxa TABLE 2 RECORD OF AFTERSHOCKS OF THE 1727 EARTHQUAKE AT NEWBURY AND MARBLEHEAD, MASSACHUSETTS EXCERPTS TAKEN FROM ORIGINAL MINISTER'S RECORD BOOKS KEPT . BY REV. MATTHIAS PLANT AT RECORD OF AFTERSHOCKS AT DATE (0,s.) TIME (LOCAL) NEWBURY, MASSACHUSETTS MARBLEHEAD, MASSACHUSETTS October 29 -- "..,and Eight more immediately "...There were about 7 or 8 followed louder than the rest small rumblings, after this, that followed and lasted a1 ye heard before one of the week sometimes breaking with clock;..." loud clasps 6 times or oftener in a day and as oftern in ye night.. ." October 30 'I.. .there were two others, one only heard the other felt." " .. .we heard another. '' "...we heard it again, ..." "...the same afternoonr..." "...and f am told by some that were up in the following Night, that they heard the rumbling twice or thrice; ..." TABLE 2 (Cont'd.) EXCERPTS TAUN FROM ORIGINAL MINISTER'S RECORD BOOKS KEPT BY REV. MATTHIAS PLANT AT RECORD OF AFTERSHOCKS AT MASSACHUSETTS DATE (00s 0) TIME (LOCAL) NEWBURY, MASSACHUSETTS MARBLEHEAD, October 31 10:00 a.m. "...there was a pretty strong one." 6335 p.m. "...an other;..." 7:33 p.m. "...an other;. .." 8:42 p.m. "...and a Fourth Time...and I am told was heard several times in the Night after." November 2 Night ",..somewhat abated..." I' .. .the Earthquake heard twice last night. " " heard November 3 -- p.m. " .. . 3 very loud claps. . ." .. . it was again last (i.e. referring to the three night:. .." reported November 3-4; also at Marblehead, time given as evening and about midnight) November 4 4.00 a.m. "...about ye Brake of day ..." "...and a very considerable one that made our windows jar." November 4 lot00 p.m. "...we also had it upon "...some say they heard it about Saturday. .- " (no time given) . 4. ..I' (original illegible, Weston Geophysical). TABLE 3 AFTERSHOCKS OF !EE 1755 EARTHQUAKE -DATE -TIME REPORTING LOCALITIES Nov. 18, 1755 529 a.m. Massachusetts : ~mesbury*,Boston, Chelmsford, Essex County, Marshfield, Northampton, Salem, Westborough, Worcester; Maine: York; New Hamp-, shire: Bedford; Rhode Island: Exeter . Nov. 18, 1755 4:00 p.m. Kittery, Maine. Nov. 19, 1755 10:OO p.m. Massachusetts: Chelmsford, Ipswich; Maine: York. Nov. 20, 1755 Not Given York, Miaine. Nov. 22, 1755 8:27 p.m. Massachusetts : Arnesburyt , Boston, Chelmsford, Essex County, Lynn, Marshfield, Northampton, Plymouth, Worcester, Westborough; Maine: Portland, York; New Hampshire : Baxnpton, Portsmouth; Rhode Island: Exeter, Newport; New York: New York. Dec. 19, 1755 10:00 p.m. Massachusetts: Boston, Essex County, Marshfield; Maine: Portland. Mar. 11, 1756 3:UO-4~00 p.m. Reported in "towns east 'of Boston. " Mar. 15, 1756 Not Given Reported along the coast from Salem, Massachusetts to Wells, '~aine. 'Amesbury reports are uncertain and are not used in consideration of aftershocks, TABLE 4 t'. ..Z%ese are the sbocka we behud in this tam, tho ' etsewhere they hare been more mrmercw. In same ptuees *he9 kve feZt 5 or 6; in others 10 or 11; & in others stCZZ, at teast 20. " . .&my other shocks have been felt since the f.irst mzd the greaeest, to the eustuard and northwmd of Bostm; at 20, 30, 40, and 50 miles diatunce, if nut farther. " l'. ..Since the reading of this tecture, there h&s been mother smaZ2 shock, viz. on Bidq the 19th of December in the evening, exactly at 30 a'ctock; the sky being then.perfectzy dear, and a very gentte gaze at S. W. It ous preceded by the pentZiur noise of w Earthquake about 3 or 4 seconds, mrcZ the jmrciq tus-d near as Long; causing the &dm-shutters md door of the chamber, in ohich I then om, to clatter. !Phase of my family, who were ;n a Zmer room, perceived nothing of the shcrke, though they head the noise. These me the only shocks tht 1 have been sensibte of; though i$is said, that mmry others have been felt in the &mime of Nm-limpshire, since the first peat one. " ". . .These four me the only abcks, the I hme been sensib Ze of from the 18th of november lase to thCs date; thor more are said to huve been felt in other parts of the countzy to the mrthumnd of US.. .. "fie center of our fonner emthquakes, us wet2 as of this, seems to have been near the Av~Mehac, &out the ktitude of 430 mrth, and 40 rniZes north from hence; many shocks barring been felt in that neighbarhood, which did not extend to this pZuce." ".. .Many others, but very smoZ2, were felt in different pam% of the Mrrssachusetts rmd Nad-Hqshi~e, for several mths after. " t~ccountarranged chronologically in order of publication.