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HURRICANE KENNETH (EP132017) 18–23 August 2017
NATIONAL HURRICANE CENTER TROPICAL CYCLONE REPORT HURRICANE KENNETH (EP132017) 18–23 August 2017 Robbie Berg National Hurricane Center 26 January 2018 NASA-NOAA SUOMI NPP ENHANCED INFRARED SATELLITE IMAGE OF HURRICANE KENNETH AT 1034 UTC 21 AUGUST 2017 WHILE AT PEAK INTENSITY Kenneth was a category 4 hurricane (on the Saffir-Simpson Hurricane Wind Scale) over the eastern North Pacific Ocean that did not affect land. Hurricane Kenneth 2 Hurricane Kenneth 18–23 AUGUST 2017 SYNOPTIC HISTORY Kenneth formed from the interaction of two tropical waves which moved off the west coast of Africa on 29 July and 2 August. The first wave moved across the Atlantic Ocean and northern South America at low latitudes and reached the eastern North Pacific Ocean on 8 August. At that point, the wave became more convectively active, but it moved only slowly westward for the next week due to its position south of Hurricane Franklin over the Bay of Campeche. In the meantime, the second tropical wave spawned Hurricane Gert over the western Atlantic, with the southern portion of the wave reaching the eastern North Pacific waters on 12 August. With the subtropical ridge rebuilding over the Gulf of Mexico, the second wave moved at a faster speed toward the west and reached the first tropical wave on 16 August (Fig. 1). The interaction of the two waves caused the development of a low by 1200 UTC 17 August about 530 n mi southwest of Manzanillo, Mexico. Convective banding became more organized and persistent through the day, and the low was designated as a tropical depression by 0600 UTC 18 August about 585 n mi south- southwest of the southern tip of the Baja California peninsula. -
Bay Eyes Boost from Reaper Wing
PANAMA CITY SPORTS | B1 SEC TITLE GAME Three weeks aft er an ugly loss at Auburn, No. 6 Georgia gets its biggest do-over Thursday, November 30, 2017 www.newsherald.com @The_News_Herald facebook.com/panamacitynewsherald 75¢ Bay eyes boost from Reaper wing Schools, builders prep By Collin Breaux mission to a base, there’s a for infl ux of airmen, 747-5081 | @PCNHCollinB certain buzz associated with families to Tyndall [email protected] that,” Laidlaw said Wednes- day. “We recognize there’s TYNDALL AIR FORCE going to be a lot of hard work BASE — A new drone wing here in the near future for slated for Tyndall Air Force those of us who are here, as Base is expected to bring well as those of us coming to 24 aircraft, 1,600 airmen — join us very shortly. ... We’re and the need for more local excited about doing it, for housing, classrooms and spe- sure.” cialized training. The wing of 24 MQ-9 Col. Brian Laidlaw, vice Reaper drones, cutting-edge commander of Tyndall’s remotely piloted aircraft 325th Fighter Wing, said the (RPA), is expected to arrive 325th Vice Commander base is enthusiastic about at Tyndall by 2022, bringing Col. Brian Laidlaw speaks Tuesday’s announcement about 1,600 airmen to Bay Maj. Bishane, a 432nd Aircraft Maintenance Squadron MQ-9 Reaper Wednesday about the new that a new MQ-9 Reaper County by 2020. pilot, controls an aircraft from Creech Air Force Base, Nev. Remotely MQ-9 Reaper wing anticipated wing likely will be coming to “That includes an piloted aircraft pilots work closely with intelligence offi cers, sensor at Tyndall Air Force Base. -
Downloaded 09/30/21 03:20 AM UTC 2292 MONTHLY WEATHER REVIEW VOLUME 130
SEPTEMBER 2002 BLACK ET AL. 2291 Eastern Paci®c Hurricanes Jimena of 1991 and Olivia of 1994: The Effect of Vertical Shear on Structure and Intensity M. L. BLACK,J.F.GAMACHE,F.D.MARKS JR., C. E. SAMSURY,* AND H. E. WILLOUGHBY NOAA/AOML/Hurricane Research Division, Miami, Florida (Manuscript received 16 May 2001, in ®nal form 21 January 2002) ABSTRACT Shear is a key inhibitor of tropical cyclone intensi®cation. Although its signature is readily recognized in satellite imagery and theoretical or modeling studies provide some insight, detailed observations have been limited. Airborne radar and in situ observations in Hurricanes Jimena of 1991 and Olivia of 1994 are a step toward better understanding. Each storm was observed on two consecutive days. Initially, both had small eyes, 16±18-km radius, and maximum winds of ;57 m s21 over sea surface temperatures (SST) .288C in easterly environmental shear. Jimena maintained constant intensity or weakened gradually for 2 days in 13±20 m s 21 easterly shear. Olivia intensi®ed in8ms21 shear on the ®rst day. Overnight, the shear diminished to reverse and became westerly. On the second day, Olivia weakened as the shear increased to .15ms21 from the west, the storm moved over cooler SST, and became surrounded by dryer air. As convection weakened and the outer rainbands ceased to be effective barriers, relative ¯ow due to the environmental shear penetrated more deeply into the vortex core. In both storms, shear controlled the convective structure. Convection organized itself into axisymmetric rings as Olivia intensi®ed in weak shear. When both storms encountered stronger shear, radar re¯ectivity and vertical motion had strong wavenumber-1 components. -
2017 North Atlantic Hurricane Season Review
2017 North Atlantic Hurricane Season Review RMS REPORT Executive Summary THE 2017 NORTH ATLANTIC HURRICANE SEASON will be remembered as one of the most active, damaging, and costliest seasons on record. The 2017 season saw 17 named storms, with 10 of these storms (Franklin through Ophelia) reaching hurricane strength and occurring consecutively within a hyperactive period between August and October. The season will be remembered for its six major hurricanes and specifically for the impacts of three of these storms: Harvey, Irma, and Maria. Hurricane Harvey, the first U.S. major hurricane (Category 3 or greater on the Saffir-Simpson Hurricane Wind Scale) to make landfall since Hurricane Wilma in 2005, made landfall near Rockport, Texas, as a Category 4 storm in late August, thus ending the contiguous U.S. major hurricane landfall drought at 4,323 days. Harvey brought record-breaking rainfall to southeast Texas that resulted in widespread catastrophic and unprecedented inland flooding across the Houston metropolitan area, damaging more than 300,000 structures. The RMS best estimate is that the insured loss from Hurricane Harvey will likely be between US$25 and US$35 billion. This estimate represents the insured loss associated with wind, storm surge, and inland flood damage across Texas and Louisiana. Florida saw its first Category 4 hurricane landfall since 2004 when Hurricane Irma made landfall over the Florida Keys in mid-September. The system later came ashore near Naples, Florida as a Category 3 storm, causing widespread wind damage and flooding across the state. Before impacting Florida, Irma tracked through the Caribbean as a Category 5 hurricane and caused extensive devastation on many islands, ultimately ranking as the strongest hurricane on record to impact the Leeward Islands. -
Prevailing Windswinds
PrevailingPrevailing WindsWinds Volume 7,Issue 2 October 2017 The Historic October 3-4, 1987 Snow Event INSIDE THIS By Hayden Frank, Lead Forecaster ISSUE: he first couple days of October usually deliver some of the best weather New England NWS Hazard 2 has to offer. High temperatures average between 65 and 70 degrees and the leaves T may just be starting to show their autumn colors. Accumulating snow during the first half of October is quite rare, but has occurred on a few occasions. Narrowing the goal posts EHWO 2 further, a significant snowstorm in the first week of October is very close to pushing the edge of what is even possible based on climatological records. MIC Musings- 3 The freak destructive snowstorm of October 3-4, 1987 is the earliest accumulating snow on rec- A New Home ord for much of eastern New York, western Massachusetts, and western Connecticut. Not only was this the earliest snowfall on record for much of this region, the amounts were just stagger- ‘17 Southern ing as some locations received 1 to 2 feet of snow. The bulk of the accumulations across west- New England 5 ern Massachusetts and western Connecticut were confined to the higher terrain. However, low- Weather er elevations across eastern New York, particularly just east of the Hudson River, received very Conference significant and historic snowfall. 21” of snow was measured in West Sand Lake, NY at an ele- vation of only 500 feet. Hollings This incredible snowstorm was preceded by 1 to 1.50 inches Undergrad 6 of rain across the region in association with a strong cold Scholars front. -
An Analysis of Storm Ophelia Which Struck Ireland on the 16Th October 2017
Storm Ophelia An Analysis of Storm Ophelia which struck Ireland on the 16th October 2017 Met Éireann Glasnevin Hill, Dublin 9 2018 Storm Ophelia Table of Contents 1. Introduction ……………………………………………………………………………………………………………………….3 2. Storm Evolution.…………………………………………………………………………………………………………………4 3. Comparison with other Severe Storms……………………………………………………………………………..6 4. Storm event analysis………………………………………………………………………………………………………….7 4.1 Storm Ophelia 4.2 The first signs of the storm 4.3 Forecasts and Advisories 4.4 The Day of the Storm: Monday 16th October 5. Forecast performance……………………………………………………………………………………………………….13 6. Impacts …………………………………………………………………………………………………………………………….14 7. Conclusions and Summary ……………………………………………………………………………………………..15 References ……………………………………………...………………………………………………………………………………..16 Appendix …………………………………………………………………………………………………………………………………….17 Page 2 Storm Ophelia, An Analysis 1. Introduction Hurricanes and tropical storms that form in the tropical Atlantic, usually from August to October, which is the peak of the Atlantic hurricane season, are occasionally picked up by the North Atlantic jet stream and swept north-eastwards towards Europe. By the time they reach Ireland, they are usually no longer classified as hurricanes, having transi- tioned into what are known as post or extra-tropical storms but can be quite powerful and damaging. Extra-Tropical Storm Ophelia (also known as Storm Ophelia) was not the only tropical system to affect Ireland in the 2017-2018 windstorm season. The remnants of Hurricane Gert and Nate had already brought heavy rainfall and flooding to some parts of Ireland in August and October but little in the way of wind. Ophelia is the farthest east Major Hurricane (Category 3 or higher) on record in the Atlantic Basin. It made landfall over Ireland as an extra-tropical storm on the morning of the 16th October 2017 resulting in observed wind speeds of up to 156 km/h, in a (3-second mean) gust, at Roche’s Point station, County Cork. -
2017 Climate Summary
& ~ Hurricane Season Review ~ St. Maarten experienced catastrophic damage during the passage of Hurricane Irma on September 6th 2017. Meteorological Department St. Maarten Airport Rd. # 114, Simpson Bay (721) 545-4226 www.meteosxm.com MDS Climatological Summary 2017 The information contained in this Climatological Summary must not be copied in part or any form, or communicated for the use of any other party without the expressed written permission of the Meteorological Department St. Maarten. All data and observations were recorded at the Princess Juliana International Airport. This document is published by the Meteorological Department St. Maarten, and a digital copy is available on our website. Prepared by: Sheryl Etienne-LeBlanc Published by: Meteorological Department St. Maarten Airport Road #114, Simpson Bay St. Maarten, Dutch Caribbean Telephone: (721) 545-4226 Website: www.meteosxm.com E-mail: [email protected] www.facebook.com/sxmweather www.twitter.com/@sxmweather MDS © April 2018 Page 2 of 34 MDS Climatological Summary 2017 Table of Contents Introduction.............................................................................................................. 4 Island Climatology……............................................................................................. 5 About Us……………………………………………………………………………..……….……………… 6 2017 Hurricane Season Summary…………………………………………………………………………………………….. 8 Local Effects...................................................................................................... 9 Summary -
Chapter 15 100 Years of Progress in Tropical Cyclone Research
CHAPTER 15 EMANUEL 15.1 Chapter 15 100 Years of Progress in Tropical Cyclone Research KERRY EMANUEL Lorenz Center, Massachusetts Institute of Technology, Cambridge, Massachusetts ABSTRACT A century ago, meteorologists regarded tropical cyclones as shallow vortices, extending upward only a few kilometers into the troposphere, and nothing was known about their physics save that convection was somehow involved. As recently as 1938, a major hurricane struck the densely populated northeastern United States with no warning whatsoever, killing hundreds. In the time since the American Meteorological Society was founded, however, tropical cyclone research blossomed into an endeavor of great breadth and depth, encompassing fields ranging from atmospheric and oceanic dynamics to biogeochemistry, and the precision and scope of forecasts and warnings have achieved a level of success that would have been regarded as impossible only a few decades ago. This chapter attempts to document the extraordinary progress in tropical cyclone research over the last century and to suggest some avenues for productive research over the next one. 1. Introduction As valuable as these contributions were, almost nothing was known about the vertical structure of tropical cyclones, By the time that the American Meteorological Society or the basic physical mechanism that drives them. Indeed, (AMS) was founded in 1919, mariners, engineers, and up through the 1930s, it was widely believed, on the basis scientists had made great strides in characterizing the of the observed rapid diminution of surface winds after climatology of tropical cyclones, including their favored landfall, that their circulation extended upward only 3 km formation regions, tracks, seasonal variability, and sur- or so, while the reigning theory for their power source was face wind field. -
1999/11/18-Documents Supporting Staff Review of North Anna ESP Final EIS Concerning Meteorology and Air Quality
TPC ATLANTIC FLOYD 1999 PRELIMINARY REPOR1a1 rage i ot zi kifl~s HOME ARCHIVES FORECASTS IMAGERY ABOUT TPC RECONNAISSANCE Preliminary Report Hurricane Floyd 7 - 17 September, 1999 Text-only version (printer friendly) Richard J. Pasch, Todd B. Kimberlain and Stacy R. Stewart National Hurricane Center 18 November 1999 PRELIMINARY REPORTS Floyd was a large and intense Cape Verde hurricane Tropical Storm that pounded the central and northern Bahama islands, Arlene Tropical Depression seriously threatened Florida, struck the coast of North Two Carolina and moved up the United States east coast Hurricane Bret into New England. It neared the threshold of category Hurricane Cindy five intensity on the Saffir/Simpson Hurricane Scale as Hurricane Dennis it approached the Bahamas, and produced a flood Tropical Storm Emily disaster of immense proportions in the eastern United Tropical Depression Seven States, particularly in North Carolina. Hurricane Floyd Hurricane Gert a. Synoptic History Tropical Storm Harvey Floyd can be traced back to a tropical wave that emerged from Tropical Depression western Africa on 2 September. This system was not particularly Eleven impressive-looking, in terms of the organization of the convection shown on Tropical Depression satellite images, but there was evidence of curvature in the cloud lines. Twelve Overall the system was broad and disorganized, yet easily recognizable as Hurricane Irene a synoptic-scale entity. Hurricane Jose Tropical Storm The wave proceeded westward across the eastern tropical Atlantic Katrina at about the normal speed of propagation, 6 degrees of longitude per day, Hurricane Lenny with little apparent change, for several days. A center of circulation was estimated late on 5 September near 15N 32.5W but the cloud pattern lacked sufficient deep convection for a Dvorak classification. -
HURRICANE GERT (AL082017) 12–17 August 2017
NATIONAL HURRICANE CENTER TROPICAL CYCLONE REPORT HURRICANE GERT (AL082017) 12–17 August 2017 Stacy R. Stewart National Hurricane Center 17 March 2018 GOES-16 HIGH-RESOLUTION VISIBLE-INFRARED SATELLITE IMAGERY SHOWING GERT NEAR ITS PEAK INTENSITY AT 1742 UTC 16 AUGUST 2017. MOSAIC IMAGES COURTESY OF UW-CIMSS SPACE SCIENCE AND ENGINEERING CENTER. Gert was a high-latitude, category 2 hurricane (on the Saffir-Simpson Hurricane Wind Scale) that remained over the open waters of the western Atlantic Ocean, passing about midway between Bermuda and the southeastern United States. Hurricane Gert 2 Hurricane Gert 12–17 AUGUST 2017 SYNOPTIC HISTORY A convectively active tropical wave, accompanied by 24-h pressure falls of 3–4 mb and a weak surface low pressure system, moved off the west coast of Africa early on 3 August. The well-developed disturbance began to show signs of organization on 3–4 August as the system moved quickly westward through a favorable environment consisting of low vertical wind shear, warm sea-surface temperatures (SST), and a moist mid-level environment. However, by 5 August, when the wave had passed well to the southwest of the Cabo Verde Islands, environmental conditions became less conducive for development, resulting in dissipation of the associated surface low along with a sharp decrease in convection. The wave moved quickly westward at near 20 kt, which likely resulted in the system becoming elongated northeast-to- southwest within the Intertropical Convergence Zone (ITCZ). This quick westward motion continued for the next five days, and the wave generated only intermittent, short-lived bursts of deep convection mainly east of the wave axis. -
Hurricanes - General Information for Bermuda Prepared by the Bermuda Weather Service – Updated August 2021
Hurricanes - General Information for Bermuda Prepared by the Bermuda Weather Service – updated August 2021 Hurricanes and tropical storms have had an impact on Bermuda from its earliest times. The initial colonization of Bermuda was a direct result of a hurricane in 1609 in which an English ship the "Sea Venture" ran aground. A study of local records from 1609 to the present day, of storm damage through the years indicates a damaging storm once every 6 to 7 years until the 21st century. Since 2000, an uptick in Bermuda-relevant tropical cyclones (TCs) has been noted in the record, and highlighted in the academic literature. The long-term effects of climate change on the variability of Bermuda TCs are an area of active research. However, recent studies indicate that increasing upper ocean temperatures near Bermuda are contributing to increased trends in TC activity locally. Hurricane season in the Atlantic is June through November, however Bermuda has seen subtropical storm activity as early as April (e.g. 2003 Ana), and has occasionally experienced tropical cyclone activity through November. Bermuda is 54 square kilometres (21 sq. miles) in area, located approximately at 32.3°N 64.7°W. Despite being out of the main TC development region of the tropical Atlantic, as well as being a ‘small target’, Bermuda has received a number of notable TC impacts in the last 20 years. The peak months for tropical cyclone activity for Bermuda are September and October, with over 80% of all storms coming within ‘threat’ range (100nm/185km) of Bermuda occurring during these months. -
A Report on All Cyclones That Formed in 2017, with Detailed Season Statistics and Records That Were Achieved Worldwide This Year
A report on all cyclones that formed in 2017, with detailed season statistics and records that were achieved worldwide this year. Compiled by Nathan Foy at Force Thirteen, December 2017, January 2018 E-mail: [email protected] Cover photo: Himawari-8 Visible-RGB image of Cyclone Ernie at peak intensity on April 7, 2017 Below photo: GOES-16 True Color image of Hurricane Jose whilst stalling off the US East Coast on September 20, 2017. Contents 1. Background 3 1.1 2017 in summary 3 1.2 Historical perspective 5 2. The 2017 Datasheet 8 2.1 Peak Intensities 8 2.2 Amount of Landfalls and Nations Affected 11 2.3 Fatalities, Injuries, and Missing persons 15 2.4 Monetary damages 17 2.5 Buildings damaged and destroyed 18 2.6 Evacuees 20 2.7 Timeline 21 3. Notable Storms of 2017 24 3.1 Cyclone Dineo 25 3.2 Cyclone Enawo 26 3.3 Cyclone Debbie 27 3.4 Cyclone Ernie 28 3.5 Tropical Storm Arlene 29 3.6 Tropical Storm Bret 30 3.7 Tropical Storm Cindy 31 3.8 Typhoon Noru 32 3.9 Hurricane Gert 33 3.10 Hurricane Harvey 34 3.11 Hurricane Irma 35 3.12 Hurricane Jose 36 3.13 Hurricane Lee 37 3.14 Hurricane Maria 38 3.15 Hurricane Ophelia 39 3.16 Typhoon Lan 40 3.17 Tropical Storm Rina and Subtropical Storm in Mediterranean Sea 41 4. 2017 Storm Records 42 4.1 Intensity and Longevity 43 4.2 Activity Records 46 4.3 Landfall Records 48 4.4 Eye and Size Records 49 4.5 Intensification Rate 50 5.