Time Path Path Number of Estimated May 1999 Local/ Length Width Persons Damage Location Date Standard (Miles) (Yards) Killed Injured Property Crops Character of Storm ARKANSAS, Northwest ARZ019-029 Crawford - Sebastian 01 0000CST 0 0 Flood 14 1900CST The Arkansas River at Van Buren started the month of May above its flood stage of 22 feet following a crest of 24.0 feet on April 28. The river remained above flood stage until 800 PM CDT on May 14. Benton County Siloam Spgs04 0200CST 0 0 Thunderstorm Wind (G52) Benton County Centerton04 0230CST 0 0 15K Thunderstorm Wind Small outbuildings were destroyed, trees were blown down, and pull-behind trailers were either damaged or moved. Washington County Prairie Grove04 0820CST 0 0 Thunderstorm Wind (G52) Carroll County Beaver04 0900CST 0 0 0.10K Thunderstorm Wind Several large tree limbs were blown down. Madison County Clifty04 0915CST 0 0 0.10K Thunderstorm Wind Several large tree limbs were blown down. Benton County Highfill04 1135CST 0 1 Lightning A man was injured when lightning struck a company trailer that he was unloading at the Northwest Arkansas Regional Airport. Crawford County 6 NW Natural Dam to04 1216CST 30175 0 3K Tornado (F3) 8 NNW Natural Dam 1220CST A significant long-track tornado first developed 4 miles west of Short, OK, moving northeast to about 7 miles southwest of Fayetteville, AR. This tornado reached its peak strength as an F3 tornado as it clipped extreme southeast Adair County, OK. This tornado then clipped extreme northwest Crawford County, passing through an unpopulated, forested area in the Ozark National Forest. An aerial survey by NWS personnel just west of the Oklahoma/Arkansas state line west of Natural Dam revealed that every tree in a hardwood forest was completely leveled. Property damage listed with this entry reflects tree damage sustained in Crawford County, while the F-rating reflects the tornado's peak strength in Adair County, OK. Washington County 3 WSW Odell to04 1220CST 22175 0 0 80K Tornado (F3) 7 SW Fayetteville 1237CST A significant long-track tornado first touched down 4 miles west of Short, OK, and tracked 39 miles to a point about 7 miles southwest of Fayetteville, AR. Along the way, this tornado passed through portions of four counties but mainly affected sparsely- populated areas. It reached its peak strength as an F3 tornado in extreme southeast Adair County, OK, but mainly caused F2 damage in Washington County, AR. Fortunately, this tornado lifted before it reached heavily-populated Fayetteville. The tornado's first real property damage took place at a property between the Hogeye and Strickland communities, where the tornado peeled off the roof to a home, shattered windows, uprooted trees, destroyed two barns, and wiped a porch off of its stone foundation. Numerous trees were blown down along County Roads 212 and 214. Only a few miles away in the Cove Creek community, south of Prarie Grove, the tornado blew off a home's roof, demolished an enclosed garage, and destroyed a barn. A flagpole was bent almost in half, and a road sign ended up wrapped around a mailbox. The tornado uprooted a 200-year old walnut tree which then fell onto a pickup truck. About a half-dozen other oak and cedar trees on one property dating back at least 150 years were snapped or uprooted. The Washington County Judge's Office supplied a picture of a church near Cove Creek that was moved off of its foundation. Several poultry buildings along the tornado's path were also damaged. The property damage listed in this entry is for just that damage sustained in Washington County, while the F-rating reflects the tornado's peak strength in Adair County, OK. Washington County Springdale04 1305CST 0 0 Hail (1.00) Benton County Monte Ne04 1325CST 0 0 10K Thunderstorm Wind 1 Time Path Path Number of Estimated May 1999 Local/ Length Width Persons Damage Location Date Standard (Miles) (Yards) Killed Injured Property Crops Character of Storm ARKANSAS, Northwest A manufactured home was damaged by a falling tree. Benton County Gentry04 1330CST 0 0 0.10K Thunderstorm Wind A large tree was blown down. Benton County Gentry04 1350CST 0 0 0.10K Thunderstorm Wind Several large tree limbs were blown down. Washington County 6 E Springdale04 1400CST 0 0 Thunderstorm Wind (G52) Sebastian County Hackett04 1415CST 0 0 Hail (0.75) Location: the greater Hackett/Bonanza area Crawford County 5 NW Natural Dam04 1425CST 0 0 1K Thunderstorm Wind Numerous trees were blown down. Crawford County Davidson04 1430CST 0 0 9K Thunderstorm Wind A car was blown off of a road. Numerous trees were blown down. Benton County Countywide04 1600CST 0 0 Flash Flood 1700CST Water covered numerous roads. Flooding forced the evacuation of a family from their manufactured home off of AR Hwy 94 in the Monte Ne area, east of Rogers. Water ran over other roads in the Cave Springs area. Summary of events for May 4 1999: Following a record tornado outbreak in Oklahoma on May 3-4, a significant severe weather outbreak affected northwest Arkansas on the morning and afternoon of May 4 as a vigorous upper level system continued to move slowly east. While there were many individual storms in the area on May 4, the most outstanding storm of the day was a supercell thunderstorm that spawned a tornado in Sequoyah County, OK, which then moved northeast for 39 miles to near Fayetteville. Other storms produced damaging winds and large hail. Crawford County Van Buren11 2230CST 0 0 Thunderstorm Wind (G52) Sebastian County Lavaca11 2230CST 0 0 0.10K Thunderstorm Wind A large tree was uprooted in Lavaca. Summary of events for May 11 1999: A slow-moving cold front was located in a north-south fashion across eastern Oklahoma on the evening of May 11. Numerous severe thunderstorms formed in eastern Oklahoma that evening. While most of the storms were confined to eastern Oklahoma, one thunderstorm moved eastward through the Arkansas River valley and into western Arkansas. This storm mainly produced marginally severe winds late in the evening. ARZ019-029 Crawford - Sebastian 16 0200CST 0 0 Flood 20 2100CST The Arkansas River at Van Buren rose above its flood stage of 22 feet at 300 AM CDT on May 16. The river crested at a level of 24.0 feet at 200 PM CDT on May 18 before falling back below flood stage at 1000 PM CDT on May 20. Benton County Gentry17 0200CST 0 0 3K Thunderstorm Wind Around 300 AM CDT in Gentry, winds left uprooted trees, downed power lines, and blocked roads. 2 Time Path Path Number of Estimated May 1999 Local/ Length Width Persons Damage Location Date Standard (Miles) (Yards) Killed Injured Property Crops Character of Storm ARKANSAS, Northwest Benton County Siloam Spgs17 0200CST 0 0 15K Thunderstorm Wind Around 300 AM CDT in Siloam Springs, a 60-70 foot tall tree blew onto a parked motor home on Oak Crest Drive. Crawford County Natural Dam17 0215CST 0 0 0.50K Thunderstorm Wind A church sign was blown down. Washington County Harmon to17 0215CST 0 0 10K Thunderstorm Wind Tontitown 0220CST High winds uprooted several trees and damaged power lines in Harmon around 315 AM CDT. The wind snapped nine poles and damaged at least three transformers. In Tontitown, around 320 AM CDT, a restaurant had its awning blown off, and a tree fell onto a mobile home. Several other trees were blown down in Tontitown. Benton County Gravette17 0220CST 0 0 6K Thunderstorm Wind A U-Haul trailer was blown over, and power lines were blown down in Gravette. Washington County Cincinnati17 0225CST 0 0 0.60K Thunderstorm Wind Several large trees were uprooted, and many large tree limbs were blown down. Washington County Prairie Grove17 0225CST 0 0 0.50K Thunderstorm Wind Trees were blown down in Prarie Grove. Benton County Highfill17 0230CST 0 0 60K Thunderstorm Wind High winds blew over an 84,000-square-foot airplane hangar under construction at the Northwest Arkansas Regional Airport. There was also minor damage to an existing hangar at the airport. The ASOS at the airport measured a peak wind gust of 46 knots (53 mph). Washington County Fayetteville17 0230CST 0 0 20K Thunderstorm Wind High winds blew the roof off of a clothing store in the 2300 block of College Avenue in Fayetteville. The ASOS at the Fayetteville Regional Airport (Drake Field) measured a peak wind gust of 47 knots (54 mph). Benton County Rogers17 0240CST 0 0 5K Thunderstorm Wind At least a half-dozen trees were blown down in Rogers. County road crews had to clear at least 50 trees and tree limbs that were blown into roads throughout Benton County. Washington County Elkins17 0245CST 0 0 0.50K Thunderstorm Wind Trees and tree limbs were blown down near Elkins. Benton County Wareagle17 0247CST 0 0 0.50K Thunderstorm Wind Several trees were blown down in War Eagle. Franklin County Fern17 0253CST 0 0 0.50K Thunderstorm Wind Trees were blown down across highways in Fern. Carroll County Eureka Spgs17 0257CST 0 0 2K Thunderstorm Wind Trees and power lines were blown down in Eureka Springs. Carroll County Grandview17 0303CST 0 0 1.5K Thunderstorm Wind 3 Time Path Path Number of Estimated May 1999 Local/ Length Width Persons Damage Location Date Standard (Miles) (Yards) Killed Injured Property Crops Character of Storm ARKANSAS, Northwest Trees were blown down over a fence in Grandview. Madison County 1 N Clifty17 0305CST 0 0 2K Thunderstorm Wind Winds toppled a large tree north of Clifty into a large power line, knocking out power to about 4,500 electric customers.