A complex of thunderstorms developed during the early morning hours of July 8th over Central Arkansas, in response to an upper level disturbance that moved southeast across the Mid-South region of Northeast Arkansas and Western Tennessee. These thunderstorms diminished by daybreak, but a strong outflow boundary consistent with 30-40 mph wind gusts shifted south into Southcentral Arkansas after 8…
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The episode as NWS SHV wrote it up.
A complex of thunderstorms developed during the early morning hours of July 8th over Central Arkansas, in response to an upper level disturbance that moved southeast across the Mid-South region of Northeast Arkansas and Western Tennessee. These thunderstorms diminished by daybreak, but a strong outflow boundary consistent with 30-40 mph wind gusts shifted south into Southcentral Arkansas after 8 am, and produced a measured 32 mph wind gust at the South Arkansas Regional Airport west of El Dorado. This boundary resulted in a tree falling across a home in South El Dorado.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before the first event at Jul 8, 6:10 AM CST, 1 hour 22 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Shreveport LA 710 AM CDT Sat Jul 8 2017 .AVIATION... VFR conditions are expected through much of the 08/12Z TAF period. However, an MCS continues to build SSE into Scntrl AR attm, near and just behind a lead gust front which may result in 30kt wind gusts at the ELD terminal between 13-15Z. This convection is expected to gradually diminish by mid to late morning, but the residual outflow bndrys will likely focus additional sct convection this afternoon over NE TX/extreme SW AR/N LA during peak heating. Have moved up the VCTS mention to the SHV/MLU terminals for the mid-afternoon, with wind gusts in excess of 35kts, brief MVFR cigs, reduced vsbys, and extreme turbulence possible in and near the convection, which may build more SSW late this afternoon/early evening before gradually diminishing. Once the convection clears SW AR/portions of N LA this afternoon/evening, only elevated cigs will remain, eventually diminishing late. Still can't rule out at least isolated convection lingering overnight over portions of E TX, but confidence remains too low to mention in the E TX terminals attm. WSW winds 4-7kts today will become Lt/Vrb after 00Z. /15/ && .PREV DISCUSSION... /issued 607 AM CDT Sat Jul 8 2017/ DISCUSSION... The overall upper level pattern hasn't changed much, as the upper level ridge remains over the Rockies and troughing remains over the eastern CONUS keeping our region in northwest flow aloft. Currently, radar shows a line of convection diving south across central Arkansas. This convection is expected to diminish around mid-morning, but some isolated storms could develop across our SW Arkansas counties before noon from the left over outflow boundary. Later today, a weak cold front will backdoor into the region from the northeast providing the focus for additional storms this afternoon in addition to diurnal heating. With plenty of low level moisture, marginal lapse rates, dcape greater than 1000 J/kg and MUCape near 2000 J/KG, there is a marginal risk for severe wind this afternoon and maybe some small hail as possible line of storms moves to SSW across the eastern half of the CWA. SPC as highlighted this, by placing our region in a Marginal Risk for today. At the moment, it appears the convection will diminish as we move into the late evening hours, but convection could continue through the late evening hours into early Sunday morning as disturbances will move across the region from the NW due to the flow aloft. Another round of storms are possible on Sunday along the residual cold front from Saturday. As we move into next week,the models continue to indicate an eastward shift in the upper ridge. This will shift the higher rain chances east of the area, but a chance of isolated diurnal convection will be remain. Temperatures will remain in the upper 80s to low 90s across the region through early next week with lows in the low to mid 70s, but some uncertainties in temperatures will remain due to the location and timing of convection. By the middle to late portions of next week, as the upper ridge continues to hang over the region, Heat Advisories may be considered as high temperatures will approach the mid 90s with heat indices near 105 degrees. /20/ && .PRELIMINARY POINT TEMPS/POPS... SHV 91 75 92 73 / 40 30 40 10 MLU 92 75 91 72 / 50 30 30 10 DEQ 91 71 90 70 / 50 30 40 10 TXK 91 74 90 71 / 50 30 40 10 ELD 90 72 90 70 / 50 30 30 10 TYR 93 75 91 75 / 30 30 40 20 GGG 94 75 91 74 / 30 30 40 20 LFK 95 74 92 74 / 30 30 40 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...None. LA...None. OK...None. TX...None. && 15
Hazardous Weather Outlook National Weather Service Shreveport LA 645 AM CDT Sat Jul 8 2017 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-091145- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 645 AM CDT Sat Jul 8 2017 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...Today and Tonight... A Marginal Risk of severe thunderstorms will be possible today as showers and thunderstorms will develop this afternoon along a weak cold front backdooring into the region from the northeast. Damaging wind gusts will be the primary threat with some small hail possible. Brief heavy rainfall and frequent lightning can also be expected. .DAYS TWO THROUGH SEVEN...Sunday through Friday... Showers and thunderstorms are possible again on Sunday as several disturbances will move through the region. By early next week an upper ridge will move over the region and rain chances will be reduced to only the afternoon diurnal heating type. However, Heat Advisories may be considered as daytime high temperatures will approach the mid 90s with heat indices near 105 degrees. .SPOTTER INFORMATION STATEMENT... Limited activation of emergency management personnel...amateur radio operators and storm spotters may be needed this afternoon and evening for portions of the region. 20
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
Strong winds estimated around 40 mph associated with a southward moving outflow boundary caused a tree to fall across a home in South El Dorado.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2017Every state in 2017This day in weather historyWarnings in Arkansas, July 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 700809.