Severe thunderstorms developed during the heating of the day across Southwest Arkansas into Northwest Louisiana. This activity developed ahead of a frontal boundary that was pulled up nearly stationary across central Arkansas.
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.
Severe thunderstorms developed during the heating of the day across Southwest Arkansas into Northwest Louisiana. This activity developed ahead of a frontal boundary that was pulled up nearly stationary across central Arkansas. Afternoon temperatures were between 100 and 105 degrees so instability was excessive across the region.
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 22, 2:45 PM CST, 2 hours 20 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
345 PM CDT SUN AUG 22 2010
.DISCUSSION...
CONVECTION INCREASING THIS AFTERNOON...INFLUENCED BY HEATING IN A
VERY MOIST ENVIRONMENT. THE FRONTAL BOUNDARY WHICH APPEARED TO
REACH NORTH LOUISIANA THIS MORNING HAS MIXED OUT...AND VERY
DIFFICULT TO FIND THIS AFTERNOON. NEAREST LOWER DEWPOINTS AND
TEMPERATURES ARE IN KENTUCKY AND MISSOURI AND WINDS ARE QUITE
VARIABLE ACROSS THE REGION. WEAK SURFACE HIGH NOW OVER THE GREAT
LAKES REGION WILL SIDE EAST BY TUESDAY AS A FAIRLY STRONG SHORT
WAVE MOVES ACROSS THE NORTHERN PLAINS. THIS SYSTEM WILL BRING A
CHANGE TO THE WEATHER ACROSS THE FOUR STATE REGION...AS A 1025 MB
SURFACE HIGH BUILDS IN BEHIND THE UPPER TROUGH ON WEDNESDAY. THIS
WILL BRING SLIGHTLY LOWER TEMPERATURES AND A SIGNIFICANT DROP IN
DEWPOINTS. MOS MAY BE A LITTLE OVER DONE...BUT MORNING LOWS MAY
FALL INTO THE UPPER 60S ACROSS PORTIONS OF THE AREA BY WEDNESDAY.
DEWPOINTS SHOULD FALL INTO THE MID AND UPPER 60S AS EARLY AS
TUESDAY AFTERNOON...SO HEAT INDEX VALUES WILL NO LONGER BE HIGHER
THAN THE TEMPERATURE.
ON THE FLIP SIDE...RAIN CHANCES WILL DECREASE AS THE DRIER AIR
SPREADS OVER THE REGION. AFTER MONDAY...THE NEXT BEST CHANCE OF
RAIN WILL NOT OCCUR UNTIL NEXT SUNDAY...AS THE SOUTHERLY WINDS AND
MOISTURE RETURN. CHANCE OF RAIN WITH THE TUESDAY NIGHT FRONT LOOK
SMALL AT THIS TIME.
&&
.AVIATION...
A WEAK FRONTAL BOUNDARY EXTENDING ACROSS SOUTHEAST OKLAHOMA...
THROUGH SOUTHERN ARKANSAS...IS EXPECTED TO CONTINUE TO DRIFT SOUTH.
SCATTERED SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THE FRONT WILL
GRADUALLY DIMINISH THROUGH 00Z. OTHERWISE...VFR CONDITIONS...ALONG
WITH LIGHT SOUTHWEST WINDS...ARE FORECAST TO PREVAIL THROUGH THE
PERIOD. /05/
&&
.PRELIMINARY POINT TEMPS/POPS...
SHV 77 100 76 99 73 / 20 10 10 10 10
MLU 75 99 72 99 71 / 20 10 10 0 10
DEQ 75 99 71 100 68 / 20 10 10 10 10
TXK 76 100 73 98 71 / 20 10 10 10 10
ELD 75 99 71 98 68 / 20 10 10 10 10
TYR 77 101 77 100 72 / 20 10 10 10 10
GGG 77 100 77 99 73 / 20 20 10 10 10
LFK 76 99 76 100 73 / 20 20 10 20 10
&&
.SHV WATCHES/WARNINGS/ADVISORIES...
AR...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR THE FOLLOWING ZONES:
ARZ050-051-059>061-070>073.
LA...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR THE FOLLOWING ZONES:
LAZ001>006-010>014-017>022.
OK...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR THE FOLLOWING ZONES:
OKZ077.
TX...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR THE FOLLOWING ZONES:
TXZ096-097-108>112-124>126-136>138-149>153-165>167.
&&
14/05HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1200 PM CDT SUN AUG 22 2010 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-231100- 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-SABINE LA- 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-SABINE TX- 1200 PM CDT SUN AUG 22 2010 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... HIGH PRESSURE WILL REMAIN IN CONTROL OF THE FOUR STATE REGION THROUGH MONDAY...RESULTING IN AFTERNOON TEMPERATURES REACHING AROUND 100 DEGREES. THESE WARM TEMPERATURES...COMBINED WITH THE HUMIDITY...WILL RESULT IN HEAT INDEX VALUES CLIMBING INTO THE 105 TO 110 DEGREE RANGE ACROSS THE REGION TODAY. HEAT INDEX VALUES ARE EXPECTED TO EXCEED 105 DEGREES BY AROUND 1 PM...AND ARE NOT EXPECTED TO FALL BACK BELOW 105 DEGREES UNTIL AROUND 7 PM. SCATTERED THUNDERSTORMS WILL CONTINUE THIS AFTERNOON AND EVENING AS A WEAK COLD FRONT MOVES SOUTHWARD ACROSS NORTH LOUISIANA AND EAST TEXAS. GUSTY WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING WILL BE POSSIBLE WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... HEAT INDEX VALUES WILL AGAIN RISE INTO THE 105 TO 110 DEGREE RANGE MONDAY AFTERNOON ACROSS THE FOUR STATE REGION. HOWEVER...HIGH PRESSURE IS EXPECTED TO BREAK DOWN SOMEWHAT ON TUESDAY...RESULTING IN LOWER TEMPERATURES AND LOWER HEAT INDEX VALUES THROUGH THE REMAINDER OF THE WEEK. AS ANOTHER COLD FRONT APPROACHES THE FOUR STATE REGION ON THURSDAY...MORE SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE. ONCE AGAIN...GUSTY WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING WILL BE POSSIBLE WITH THE STRONGER STORMS. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT EXPECTED THROUGH TONIGHT.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
505 PM CDT SUN AUG 22 2010
ARZ073-222245-
UNION-
505 PM CDT SUN AUG 22 2010
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 545 PM CDT...FOR THE FOLLOWING
COUNTY...
IN SOUTH CENTRAL ARKANSAS...
UNION...
INCLUDING THE FOLLOWING LOCATIONS...
CALION...EL DORADO...HUTTIG...JUNCTION CITY...LAPILE...LAWSON...
LISBON...MOUNT HOLLY...NORPHLET...SMACKOVER...STRONG...URBANA
AND WESSON...
AT 500 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM NEAR LISBON...OR 7 MILES SOUTHWEST OF
SMACKOVER...MOVING SOUTHEAST AT 15 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
14SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
559 PM CDT SUN AUG 22 2010
LAZ004-006-230000-
CLAIBORNE-UNION-
559 PM CDT SUN AUG 22 2010
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 700 PM CDT...FOR THE FOLLOWING
PARISHES...
IN NORTHWEST LOUISIANA...
CLAIBORNE...
IN NORTH CENTRAL LOUISIANA...
UNION...
INCLUDING THE FOLLOWING LOCATIONS...
BERNICE...
AT 554 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM 10 MILES WEST OF JUNCTION CITY...MOVING
SOUTHEAST AT 10 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.The Shreveport radar (KSHV), 126 km away, was scanning. The volume nearest the first event began at 23:04 UTC.
15 thunderstorm wind, 1 lightning. Local standard time, as filed.
Numerous trees were downed near Rum Center east southeast of Junction City, Louisiana.
Trees were downed near Conway.
Trees were downed north of Bernice, Louisiana.
Trees and powerlines were downed in the Weldon, Louisiana community.
Trees were downed near Antioch, Louisiana.
Trees were downed near Hwy. 167.
Several trees were downed northeast of Lisbon, Louisiana.
Trees were downed near Athens, Louisiana.
Large tree limbs were downed along with power outages reported in Arcadia, Louisiana.
Trees and powerlines were downed in Springhill, Louisiana.
Trees and powerlines were downed east of Plain Dealing, Louisiana.
Lightning started a small fire when it hit a house on Hwy. 3 near Plain Dealing. There were no injuries reported.
Trees and powerlines were downed in Rocky Mount, Louisiana.
Trees were downed along with a fence with iron posts that were bent over.
Winds were estimated near 60 mph approximately 5 miles south southeast of Bossier City, Louisiana.
Trees were uprooted in Doyline, Louisiana.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2010Every state in 2010This day in weather historyWarnings in Louisiana, August 2010
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: 242844, 242846, 242847, 242858, 242848, 242849, 242850, 242852, 242853, 242854, 242855, 242857, 242856, 243981, 242859, 242860.