Late afternoon and early evening convection developed across North Central Louisiana on August 11th. These storms developed in a moderately unstable airmass and once they decayed, they produced strong and damaging wind gusts.
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.
Late afternoon and early evening convection developed across North Central Louisiana on August 11th. These storms developed in a moderately unstable airmass and once they decayed, they produced strong and damaging wind gusts.
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 11, 1:55 PM CST, 3 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 255 PM CDT SUN AUG 11 2013 .DISCUSSION... ISOLATED CONVECTION DEVELOPING THIS AFTERNOON VICINITY OF A STALLED FRONTAL BOUNDARY ACROSS NORTH TEXAS INTO SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS. DEVELOPMENT WAS ALSO OCCURRING ACROSS EASTERN AND SOUTHERN ZONES WHERE HIGHER MOISTURE WAS AVAILABLE DUE TO THE DISTURBANCE IN THE NORTHERN GULF. ELSEWHERE A WEAK RIDGE ALOFT CONTINUES TO SUPPRESS ANY DEVELOPMENT. LOOK FOR THIS TREND TO CONTINUE THROUGH MONDAY WITH VERY LITTLE CHANGE IN THE SYNOPTIC PATTERN EXPECTED. ON TUESDAY...A STRONG TROUGH DIGS SOUTH INTO THE MISSISSIPPI VALLEY...FORCING THE UPPER RIDGE WEST... BREAKING THE STAGNANT PATTERN WHICH HAS PERSISTED OVER THIS REGION. THE NORTHWEST FLOW ALOFT PROVIDED BY THE TROUGH WILL BRING A FRONT INTO THE REGION BY EARLY WEDNESDAY...SUPPORTED BY SEVERAL UPPER LEVEL SHORT WAVES. LOOK FOR GOOD CHANCES OF CONVECTION ACROSS THIS AREA BEGINNING AS EARLY AS TUESDAY NIGHT IN NORTHERN AREAS AND CWA WIDE WEDNESDAY AND WEDNESDAY NIGHT AS THE FRONT WORKS SOUTH. DRIER AND COOLER AIR WILL FOLLOW THE FRONT THURSDAY...WITH RAIN CHANCES ENDING ALL BUT SOUTHERN AREAS. EXPECT DRY AND COOLER WEATHER TO FOLLOW ON FRIDAY AND CONTINUE THROUGH THE WEEKEND WITH NORTH TO NORTHEAST SURFACE WIND PREVAILING. TEMPERATURES ON MONDAY AND TUESDAY WILL BE VERY SIMILAR TO TODAYS READINGS...WITH MID AND UPPER 90S EXPECTED. HEAT INDEX VALUES SHOULD RANGE BETWEEN 100 AND 105 IN THE AFTERNOONS...JUST BELOW HEAT ADVISORY CRITERIA. COOLER TEMPERATURES EXPECTED FOR WEDNESDAY DUE TO THE CONVECTION...AND COOLER AND DRIER FOR THE REMAINDER OF WEEK BEHIND THE FRONT. LOWS WILL FALL INTO THE 60S AREA WIDE FRIDAY THROUGH SUNDAY MORNING...A PLEASANT RELIEF FROM THE HEAT. && VFR CONDITIONS WILL CONTINUE THROUGH MOST OF THE 00Z TAF PD. ISOLD CONVECTION HAS BEGUN DEVELOPING ACROSS PARTS OF THE REGION...AND EXPECT THIS TO CONTINUE THROUGH SUNSET. BRIEF REDUCTIONS TO VSBYS AND/OR CIGS WITH GUSTY WINDS MAY OCCUR IN THE VC OF ANY TSTMS...AND WILL HANDLE WITH AMENDMENTS AS NEEDED. OTHERWISE...EXPECT SLY WINDS GENERALLY LESS THAN 10 KTS THROUGHOUT THE PD. /12/ && .PRELIMINARY POINT TEMPS/POPS... SHV 75 98 76 98 76 / 20 10 20 30 30 MLU 72 96 74 93 74 / 30 30 20 40 30 DEQ 71 95 73 94 72 / 20 20 30 40 50 TXK 74 96 74 94 72 / 20 20 20 40 40 ELD 72 96 73 94 72 / 20 30 20 40 40 TYR 76 97 76 98 76 / 20 10 10 20 30 GGG 75 98 76 98 76 / 20 10 10 20 30 LFK 74 97 74 97 75 / 20 20 10 20 20 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 14/12
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 333 AM CDT SUN AUG 11 2013 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-111800- 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- 333 AM CDT SUN AUG 11 2013 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 MOIST AIRMASS AND HEATING WILL RESULT IN WIDELY SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ONCE AGAIN TODAY. THUNDERSTORMS WILL HAVE THE CAPABILITY TO PRODUCE STRONG AND DAMAGING WIND GUSTS THAT WILL DOWN TREES AND POWERLINES ONCE THE STORMS DECAY. HOWEVER...THIS IS NOT EXPECTED TO BE WIDESPREAD. AFTERNOON TEMPERATURES ARE ONCE AGAIN EXPECTED TO NEAR THE CENTURY MARK ACROSS THE REGION WITH HEAT INDEX VALUES APPROACHING 105 DEGREES ACROSS SOME LOCATIONS. KEEP IN MIND THAT THE COMBINATION OF HEAT AND HIGH HUMIDITY WILL RESULT IN AN ELEVATED RISK OF HEAT RELATED ILLNESS. OTHER THAN ISOLATED THUNDERSTORMS THAT MAY PRODUCE WIND DAMAGE... NO ADDITIONAL HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... THUNDERSTORMS WILL BECOME MORE SCATTERED TO NUMEROUS ACROSS PORTIONS OF THE REGION LATE TUESDAY THROUGH WEDNESDAY NIGHT AS A FRONTAL BOUNDARY APPROACHES THE REGION FROM THE NORTH. WIND DAMAGE WITH THESE THUNDERSTORMS COULD BECOME MORE WIDESPREAD...ESPECIALLY WEDNESDAY INTO WEDNESDAY EVENING AS THE FRONT APPROACHES. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO OPERATORS...AND STORM SPOTTERS WILL NOT BE NEEDED. 13
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
315 PM CDT SUN AUG 11 2013
OKZ077-112115-
MCCURTAIN-
315 PM CDT SUN AUG 11 2013
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 415 PM CDT...FOR THE FOLLOWING
COUNTY...
IN SOUTHEAST OKLAHOMA...
MCCURTAIN...
INCLUDING THE FOLLOWING LOCATIONS...
BROKEN BOW AND IDABEL...
AT 313 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM 10 MILES EAST OF IDABEL...OR 12 MILES
SOUTHEAST OF BROKEN BOW...MOVING EAST AT 15 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
421 PM CDT SUN AUG 11 2013
OKZ077-TXZ096-097-112200-
BOWIE-MCCURTAIN-RED RIVER-
421 PM CDT SUN AUG 11 2013
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 500 PM CDT...FOR THE FOLLOWING
COUNTIES...
IN SOUTHEAST OKLAHOMA...
MCCURTAIN...
IN NORTHEAST TEXAS...
RED RIVER AND BOWIE...
INCLUDING THE FOLLOWING LOCATIONS...
AMERICA...BOKHOMA...GOODLAKE...HARRIS...HAWORTH...MOON AND
TOM...
AT 416 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM 10 MILES SOUTH OF IDABEL...OR 17
MILES NORTHEAST OF CLARKSVILLE...MOVING EAST AT 10 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
24SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
444 PM CDT SUN AUG 11 2013
TXZ151-153-112215-
PANOLA-SHELBY-
444 PM CDT SUN AUG 11 2013
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 515 PM CDT...FOR THE FOLLOWING
COUNTIES...
IN NORTHEAST TEXAS...
PANOLA...
IN EASTERN TEXAS...
SHELBY...
INCLUDING THE FOLLOWING LOCATIONS...
TENAHA AND TIMPSON...
AT 440 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM NEAR TENAHA...OR 9 MILES NORTHWEST OF
CENTER. THIS STORM WAS MOVING TO THE WEST...SOUTHWEST AT 5 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
24SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
454 PM CDT SUN AUG 11 2013
TXZ096-112245-
RED RIVER-
454 PM CDT SUN AUG 11 2013
...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 NORTHEAST TEXAS...
RED RIVER...
INCLUDING THE FOLLOWING LOCATIONS...
BOGATA AND CLARKSVILLE...
AT 450 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM NEAR CLARKSVILLE...MOVING SOUTHEAST
AT 5 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
24SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
546 PM CDT SUN AUG 11 2013
LAZ006-014-112315-
OUACHITA-UNION-
546 PM CDT SUN AUG 11 2013
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 615 PM CDT...FOR THE FOLLOWING
PARISHES...
IN NORTH CENTRAL LOUISIANA...
UNION AND OUACHITA...
INCLUDING THE FOLLOWING LOCATIONS...
BROWNSVILLE-BAWCOMVILLE...CLAIBORNE...MONROE...RICHWOOD AND WEST
MONROE...
AT 544 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
DETECTING A STRONG THUNDERSTORM NEAR WEST MONROE...MOVING NORTHWEST
AT 5 MPH.
WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.
24The Shreveport radar (KSHV), 159 km away, was scanning. The volume nearest the first event began at 22:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
Damaging thunderstorm wind gust downed a tree on a home in West Monroe, Louisiana. There were no reports of injuries.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2013Every state in 2013This day in weather historyWarnings in Louisiana, August 2013
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: 462262.