Unfortunately, the beginning of August picked up where July left off with widespread heavy rainfall and severe thunderstorms across portions of southwest Arkansas, northeast Texas as well as northwest and north central Louisiana. This activity continued to regenerate due to the flow aloft being from the northwest.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SHV wrote it up.
Unfortunately, the beginning of August picked up where July left off with widespread heavy rainfall and severe thunderstorms across portions of southwest Arkansas, northeast Texas as well as northwest and north central Louisiana. This activity continued to regenerate due to the flow aloft being from the northwest. This would send disturbance into the Lower Mississippi Valley from the Southern Plains. A majority of the flooding would take place during the morning with afternoon thunderstorms producing a majority of the wind damage.
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 Aug 1, 2:05 AM CST, 6 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 305 AM CDT SAT AUG 1 2009 .DISCUSSION... A QUIET EARLY MORNING WEATHER WISE ACROSS THE REGION BUT THIS WILL CHANGE IN A HURRY AS A SHORTWAVE DIVES OUT OF THE SOUTHERN PLAINS AND INTO THE LOWER MISSISSIPPI VALLEY TODAY. LATEST IR AND WATER VAPOR IMAGERY SHOWING OUR SHORTWAVE EXTENDING FROM EASTERN KS INTO WESTERN OK AND THE TX PHNDL. CONVECTION ALONG A PREFRONTAL TROUGH HAS SHOWN A SLIGHT WEAKENING TREND IN THE LAST COUPLE OF HOURS WITH THE TRUE COLD FRONT STILL WEST OF THE PRESENT CONVECTION. THIS SHOULD CHANGE AS THE TROUGH ENCOUNTERS DEEPER MOISTURE AND INSTABILITY ACROSS THE MIDDLE RED RIVER VALLEY OF NE TX/SE OK/SW AR AND NW LA LATER TODAY. LOW LEVEL JET STARTING TO CRANK UP PER VAD WIND PROFILERS WITH PALESTINE PROFILER TO OUR WEST UPWARDS OF 30KTS IN THE BOUNDARY LAYER NOW. THIS WILL HELP TO TRANSPORT DEEPER MOISTURE WITH PWATS IN EXCESS OF 2 INCHES NORTHWARD TODAY. ALSO IN THE MIX IS A REMNANT AREA OF VORTICITY ACROSS CENTRAL TEXAS THAT WILL BE MOVING EASTWARD AS WELL. AS A 70+ KT UPPER LEVEL JET STREAK DEVELOPS ACROSS THE SOUTHERN PLAINS LATER TODAY...AMPLE LIFT WILL OCCUR ACROSS THE REGION RESULTING IN WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY. HAVE ADDED THE POSSIBILITY OF SEVERE THUNDERSTORMS TO THE GRIDS BASICALLY ALONG AND NORTH OF THE I-20 CORRIDOR OF NE TX AND N LA FOR TODAY THROUGH THIS EVENING. LOCALLY HEAVY RAINFALL WILL ALSO BE A POSSIBILITY BUT THE SYSTEM APPEARS TO BE MOVING QUICKLY ENOUGH THAT A WIDESPREAD FLOODING PROBLEM DOES NOT APPEAR LIKELY. THUS...WILL NOT HOIST A FLASH FLOOD WATCH EVEN THROUGH SOILS REMAIN PRETTY SATURATED FROM RAINFALL EARLIER IN THE WEEK. STILL COULD EASILY SEE TWO TO THREE INCHES WITH DEEPER CONVECTION HOWEVER AND HAVE ADDED MENTION OF LOCALLY HEAVY RAINFALL TO THE GRIDS AS WELL. FRONT SHOULD BE INTO SW AR AND NE TX BY 12Z SUN AND WILL CONTINUE TO SERVE AS A FOCUS FOR ADDITIONAL THUNDERSTORM DEVELOPMENT THROUGH THE OVERNIGHT HOURS EVEN THOUGH UPPER LEVEL SUPPORT WEAKENS BY MIDNIGHT TONIGHT. GFS APPEARS TO BE HAVING SOME FEEDBACK PROBLEMS AS IT IS THE ONLY SHORT TERM MODEL TO SUGGEST QPF BOMBS IN THE WAKE OF THE UPPER TROUGH AXIS ACROSS NORTH CENTRAL TX OVERNIGHT TONIGHT. KEPT CHANCE POPS GOING FOR SUNDAY AS AGAIN...FRONTAL BOUNDARY WILL BE IN THE NEIGHBORHOOD OF THE I-20 CORRIDOR. BEYOND SUNDAY... MEDIUM RANGE PROGS ARE QUITE A BIT MORE PROGRESSIVE COMPARED TO THIS TIME YESTERDAY. THE MORE RELIABLE AS OF LATE ECMWF NOW BRINGS THE UPPER RIDGE OUT OF THE SW CONUS AND INTO THE MID MISS VALLEY BY THE END OF THE WORK WEEK AND INTO THE TENN VALLEY BY NEXT WEEKEND. THE GFS IS NOT THIS PROGRESSIVE BUT DOES PUT US UNDER THE INFLUENCE OF THE RIDGE MORE WHICH SHOULD RESULT IN A WARMING TREND THROUGH THE UPCOMING WORK WEEK AND LESS IN THE WAY OF PRECIPITATION CHANCES. WILL NEED TO WATCH A WEAK DISTURBANCE ALONG THE BACK SIDE OF THE RIDGE POSSIBLY EFFECTING OUR NORTHERN AND EASTERN ZONES WED INTO THU BUT OTHER THAN THAT...A DRIER AND WARMER FORECAST IS WARRANTED. NOW...LETS JUST GET THROUGH TODAY. PRELIMS TO FOLLOW...13. && .AVIATION... FOR THE MOST PART...EXPECT VFR CONDITIONS TO CONTINUE THROUGH SATURDAY MORNING. A WEAK SHORT WAVE TROUGH TO DURING SATURDAY AFTERNOON EXPECTED TO BRING A WAVE OF TSTMS FROM W TO E THROUGH SATURDAY EVENING...WITH MOST TERMINALS FORECAST MVFR DURING THE AFTERNOON TEMPORARILY. FOR SATURDAY NIGHT THROUGH EARLY SUNDAY MORNING...EXPECT SCTD TSTMS TO CONTINUE WITH SOME MVFR CONDITIONS IN THE STRONGER STORMS. /VIII/. && .PRELIMINARY POINT TEMPS/POPS... SHV 88 74 91 73 93 / 70 60 40 20 20 MLU 88 73 90 72 92 / 70 60 40 20 20 DEQ 86 70 92 69 94 / 80 60 30 20 20 TXK 87 73 92 71 93 / 80 60 40 20 20 ELD 87 71 91 70 92 / 80 60 40 20 20 TYR 89 74 92 73 94 / 70 60 40 20 20 GGG 88 74 92 72 94 / 70 60 40 20 20 LFK 92 75 92 73 94 / 50 60 30 20 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 13/08
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 354 AM CDT SAT AUG 1 2009 ARZ050-051-059>061-070>073-LAZ001>006-010>014-OKZ077-TXZ096-097- 108>112-124>126-136>138-149>151-011715- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN- UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-MCCURTAIN- BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH- GREGG-HARRISON-CHEROKEE-RUSK-PANOLA- 354 AM CDT SAT AUG 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA... NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA AND NORTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT... A STRONG UPPER LEVEL TROUGH WILL BE MOVING ACROSS THE FOUR STATE REGION TODAY. THIS TROUGH ALONG WITH DAYTIME HEATING WILL SET THE STAGE FOR SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE REGION. ATMOSPHERIC DYNAMICS SUGGEST THAT THERE WILL BE A POSSIBILITY FOR THESE STORMS TO REACH SEVERE LIMITS TODAY... PRODUCING STRONG AND DAMAGING WIND GUSTS ALONG WITH LARGE HAIL. THE MAIN THREAT AREA WILL BE ALONG AND NORTH OF THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS TO NORTHERN LOUISIANA. ALONG WITH THE SEVERE WEATHER THREAT...LOCALLY HEAVY DOWNPOURS WILL LIKELY ACCOMPANY THESE STORMS WITH TWO TO THREE INCH RAINFALL AMOUNTS POSSIBLE THROUGH THIS EVENING BEFORE THE STORM SYSTEM SHIFTS EAST OF THE REGION. A COLD FRONT WILL ACCOMPANY THIS STORM SYSTEM AND THIS FRONTAL BOUNDARY WILL SHOULD STALL WEST TO EAST ACROSS THE REGION OVERNIGHT. THIS BOUNDARY WILL LIKELY FOCUS ADDITIONAL THUNDERSTORM ACTIVITY INTO THE OVERNIGHT HOURS TONIGHT...BUT THIS ACTIVITY SHOULD BE MORE SCATTERED IN NATURE AND NOT AS INTENSE AS THE ACTIVITY EXPECTED ACROSS THE REGION TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... THE ACTIVATION OF STORM SPOTTERS WILL LIKELY BE NEEDED TODAY DUE TO THE ANTICIPATED DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS ACROSS THE REGION. LAZ017>022-TXZ152-153-165>167-011715- SABINE LA-NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-NACOGDOCHES- SHELBY-ANGELINA-SAN AUGUSTINE-SABINE TX- 354 AM CDT SAT AUG 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL LOUISIANA...NORTHWEST LOUISIANA AND EAST TEXAS. .DAY ONE...TODAY AND TONIGHT... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE TODAY AS AN UPPER LEVEL STORM SYSTEM MOVES OUT OF THE SOUTHERN PLAINS AND INTO THE LOWER MISSISSIPPI VALLEY. WHILE THE TREAT OF SEVERE THUNDERSTORMS WILL BE GREATER ALONG AND NORTH OF THE INTERSTATE 20 CORRIDOR OF NORTHEAST TEXAS AND NORTHERN LOUISIANA... SOUTH OF THE INTERSTATE 20 CORRIDOR...ISOLATED SEVERE THUNDERSTORMS WILL CERTAINLY BE POSSIBLE AND WILL BE TIED MORE WITH DAYTIME HEATING. SOME OF THESE STORMS COULD PRODUCE BRIEF...LOCALLY HEAVY RAINFALL AMOUNTS OF ONE TO TWO INCHES BEFORE THE ACTIVITY SHIFTS EAST OF THE REGION OVERNIGHT. THERE WILL BE THE POSSIBILITY FOR ADDITIONAL THUNDERSTORM ACTIVITY DURING THE OVERNIGHT HOURS TONIGHT BUT THIS ACTIVITY WILL BE MORE SCATTERED IN NATURE WITH STORM INTENSITY NOT AS GREAT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WHILE ISOLATED STRONG TO SEVERE THUNDERSTORMS CANNOT BE RULED OUT LATER TODAY...SOME OF WHICH COULD PRODUCE AN ISOLATED STRONG AND DAMAGING WIND GUST...WIDESPREAD SEVERE THUNDERSTORMS SHOULD STAY NORTH OF THE REGION TODAY THROUGH TONIGHT. THUS...THE ACTIVATION OF STORM SPOTTERS IS NOT ANTICIPATED THROUGH TONIGHT. 13
The Western Arkansas radar (KSRX), 155 km away, was scanning. The volume nearest the first event began at 14:16 UTC.
1 flash flood. Local standard time, as filed.
Water from excessive heavy rainfall covered multiple roads and filled parking lots in the city of Nashville, Arkansas.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2009Every state in 2009This day in weather historyWarnings in Arkansas, August 2009
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: 188558.