Heating of the day and a weakly capped atmosphere resulted in the development of isolated strong thunderstorms across portions of northwest and west central Louisiana during the afternoon of May 30th. One storm in Sabine Parish downed a tree east of the Toledo Bend Reservoir.
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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.
Heating of the day and a weakly capped atmosphere resulted in the development of isolated strong thunderstorms across portions of northwest and west central Louisiana during the afternoon of May 30th. One storm in Sabine Parish downed a tree east of the Toledo Bend Reservoir.
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 May 30, 1:46 PM CST, 1 hour 44 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 246 PM CDT SUN MAY 30 2010 .DISCUSSION... WATER VAPOR IMAGERY THIS AFTERNOON SHOWS THE UPPER LEVEL LOW IS SPINNING OVER MS. A WEAK PRESSURE TROUGH IS SITTING OVER THE SOUTHWESTERN CORNER OF THE CWFA. RADAR IMAGERY SHOWS CONVECTION IS DEVELOPING OVER THIS SOUTHWESTERN CORNER. CONVECTION IS ALSO DEVELOPING NORTHWEST OF THE CWFA ON THE WESTERN SIDE OF THE UPPER LEVEL LOW. CONVECTION IS EXPECTED TO INCREASE IN COVERAGE OVER PRIMARILY THE SOUTHERN AND EASTERN PORTIONS OF THE CWFA AS THESE TWO FEATURES COMBINE WITH A MOIST AND UNSTABLE AIRMASS. FOR NOW IT DOES NOT APPEAR THAT WIDESPREAD SEVERE WEATHER WILL BE LIKELY. HOWEVER...STRONG STORMS CAPABLE OF GUSTY WINDS AND SMALL HAIL WILL BE POSSIBLE THIS AFTERNOON AND EVENING. CONVECTION IS EXPECTED TO BEGIN TO DIE DOWN BY MID TO LATE EVENING WITH THE LOSS OF DAYTIME HEATING. ON MONDAY THE UPPER LEVEL LOW IS EXPECTED TO BEGIN TO SHIFT NORTHEAST AWAY FROM THE CWFA. A WEAK BOUNDARY IS EXPECTED TO APPROACH THE REGION FROM THE NORTHWEST MONDAY AS WELL. THESE FEATURES AGAIN COMBINED WITH DAYTIME HEATING AND AVAILABLE MOISTURE WILL TRIGGER MORE AFTERNOON AND EVENING CONVECTION. BY TUESDAY IT APPEARS FOR NOW THAT THE WEAK BOUNDARY MAY HAVE ENOUGH PUSH TO GET IT MOST OF THE WAY THROUGH THE CWFA. HOWEVER HAVE WENT AHEAD AND INCLUDED SOME LOW END POPS ACROSS THE SOUTHERN THIRD OF THE CWFA SINCE THESE SYSTEMS USUALLY HAVE A HARD TIME MAKING IT ALL THE WAY THROUGH THE AREA THIS TIME OF YEAR. CAN NOT RULE OUT THE POSSIBILITY OF AT LEAST PART OF THE CWFA SEEING ISOLATED CONVECTION GIVEN THE POSSIBILITY OF THE LINGERING BOUNDARY COMBINING WITH AVAILABLE MOISTURE AND INSTABILITY. BUT OVERALL CONVECTION WILL BE LIMITED WITH THE UPPER RIDGE BRIEFLY BUILDING OVER THE CWFA. ANOTHER SHORTWAVE IS EXPECTED TO APPROACH THE FOUR STATE REGION ON WEDNESDAY AND THURSDAY. THIS WILL BRING DECENT COVERAGE OF CONVECTION FOR BOTH OF THOSE DAYS AS THIS SYSTEM BRINGS ANOTHER BOUNDARY INTO THE FOUR STATE REGION. THIS SYSTEM SHOULD MOVE OUT OF THE CWFA BY THE END OF THE WEEK TO GIVE A BREAK FROM THE WIDESPREAD AFTERNOON CONVECTION. TEMPERATURES THROUGH THE FORECAST PERIOD SHOULD AROUND OR SLIGHTLY WARMER THAN NORMAL. HIGHS EACH DAY ARE EXPECTED TO REACH THE LOWER TO POSSIBLY MIDDLE 90S. LOWS SHOULD REMAIN IN THE UPPER 60S TO LOWER 70S. OVERALL HAVE NOT MADE ANY SIGNIFICANT CHANGES TO GUI VALUES OTHER THAN TO REFLECT SIMILAR CONDITIONS FOR THE SHORT TERM TO WHAT WE HAVE SEEN THE PAST COUPLE OF DAYS. /22/ && .AVIATION... WIDELY SCATTERED TSTMS DEVELOPING OVER CENTRAL AND SE AR THIS SUNDAY AFTERNOON WILL PEAK BY LATE AFTERNOON AND THEN DISSIPATE THROUGH SUNSET WITH LOSS OF DAYTIME HEATING. SUMMER CLIMATOLOGICAL VFR CONDITIONS TO CONTINUE THROUGH THE MONDAY HOLIDAY AS MID AND UPPER LOW CENTERED OVER NRN MS TO ONLY PRODUCE WIDELY SCTD TSTMS AT BEST AROUND WRN SEMICIRCLE OF THE LOW. /VIII/ && .PRELIMINARY POINT TEMPS/POPS... SHV 69 94 71 93 71 / 20 20 20 10 10 MLU 69 93 71 92 70 / 20 40 20 20 10 DEQ 66 92 68 93 68 / 20 20 10 10 10 TXK 67 94 70 93 71 / 20 20 10 10 10 ELD 68 93 69 93 70 / 20 30 20 10 10 TYR 70 95 71 94 72 / 20 20 10 10 10 GGG 69 94 70 93 71 / 20 20 10 10 10 LFK 71 95 70 94 71 / 20 20 20 20 10 && .SHV WATCHES/WARNINGS/ADVISORIES... AR...NONE. LA...NONE. OK...NONE. TX...NONE. && 22/08
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1138 AM CDT SUN MAY 30 2010 ARZ073-LAZ005-006-010>014-017>022-TXZ149>153-165>167-311645- UNION AR-LINCOLN-UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON- OUACHITA-SABINE LA-NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE- CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE- SABINE TX- 1138 AM CDT SUN MAY 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ARKANSAS...NORTH CENTRAL LOUISIANA...NORTHWEST LOUISIANA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING SOUTH AND EAST OF A JACKSONVILLE TEXAS...TO MANSFIELD AND FARMERVILLE LOUISIANA...TO STRONG ARKANSAS LINE. A FEW STRONG STORMS ARE POSSIBLE...AS AN UPPER LEVEL LOW INTERACTS WITH A MOIST AND UNSTABLE AIRMASS. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS AROUND 40 MILES PER HOUR. HOWEVER...WIDESPREAD SEVERE STORMS ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL WILL NOT BE NEEDED THROUGH TONIGHT. ARZ050-051-059>061-070>072-LAZ001>004-OKZ077-TXZ096-097-108>112- 124>126-136>138-311645- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-CADDO-BOSSIER-WEBSTER-CLAIBORNE-MCCURTAIN-RED RIVER- BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-SMITH- GREGG-HARRISON- 1138 AM CDT SUN MAY 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST ARKANSAS...NORTHWEST LOUISIANA...SOUTHEAST OKLAHOMA AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... ISOLATED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING NORTH AND WEST OF A JACKSONVILLE TEXAS...TO MANSFIELD AND FARMERVILLE LOUISIANA...TO STRONG ARKANSAS LINE. WHILE SEVERE STORMS ARE NOT EXPECTED...A FEW OF THE STRONGER STORMS MAY PRODUCE HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS OF 35 TO 40 MILES PER HOUR. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL WILL NOT BE NEEDED THROUGH TONIGHT.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
321 PM CDT SUN MAY 30 2010
LAZ017-018-302115-
NATCHITOCHES-SABINE-
321 PM CDT SUN MAY 30 2010
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 415 PM CDT...FOR THE FOLLOWING
PARISHES...
IN NORTHWEST LOUISIANA...
NATCHITOCHES AND SABINE...
INCLUDING THE FOLLOWING LOCATIONS...
BELLWOOD...FISHER...FLORIEN...GORUM...KISATCHIE...MELROSE AND
MOUNT CARMEL...
AT 317 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE DETECTING
A STRONG THUNDERSTORM 12 MILES EAST OF MANY...OR 18 MILES NORTH OF
ANACOCO...MOVING SOUTHEAST AT 15 MPH.
PENNY SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.
22SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
342 PM CDT SUN MAY 30 2010
TXZ166-167-302130-
SABINE-SAN AUGUSTINE-
342 PM CDT SUN MAY 30 2010
...SIGNIFICANT WEATHER ADVISORY...
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY...EFFECTIVE UNTIL 430 PM CDT...FOR THE FOLLOWING
COUNTIES...
IN EASTERN TEXAS...
SAN AUGUSTINE AND SABINE...
INCLUDING THE FOLLOWING LOCATIONS...
BLAND LAKE...GENEVA...HEMPHILL...MACUNE...PINELAND...ROSEVINE
AND SAN AUGUSTINE...
AT 337 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE DETECTING
A STRONG THUNDERSTORM NEAR SAN AUGUSTINE...OR 21 MILES SOUTH OF
CENTER...MOVING SOUTHEAST AT 5 MPH.
PENNY SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.
22The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
One tree was downed blocking Hwy. 191 near the community of Little Flock.
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, May 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: 222829.