Scattered strong to severe thunderstorms began developing across the region during the late evening hours of May 16th and continued into the predawn hours of May 17th. The storms encountered a moderately unstable airmass south of the Interstate 20 corridor of northern Louisiana.
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.
Scattered strong to severe thunderstorms began developing across the region during the late evening hours of May 16th and continued into the predawn hours of May 17th. The storms encountered a moderately unstable airmass south of the Interstate 20 corridor of northern Louisiana. A strong outflow boundary served as the focus for the storms. The storms produced damaging wind gusts along with large hail.
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 16, 8:25 PM CST, 3 hours 55 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1215 PM CDT SUN MAY 16 2010 ARZ050-051-059>061-070>073-LAZ001>006-012>014-OKZ077-TXZ096-097- 108>112-124>126-137-138-171715- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN- UNION LA-BIENVILLE-JACKSON-OUACHITA-MCCURTAIN-RED RIVER-BOWIE- FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-UPSHUR-MARION-GREGG-HARRISON- 1215 PM CDT SUN MAY 16 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST AND SOUTH CENTRAL ARKANSAS...NORTHWEST AND NORTH CENTRAL LOUISIANA...NORTHEAST TEXAS AND FOR SOUTHEAST OKLAHOMA. .DAY ONE...THIS AFTERNOON AND TONIGHT... AN UPPER LEVEL DISTURBANCE OVER OKLAHOMA WILL MOVE ACROSS ARKANSAS BY TONIGHT. IN ADDITION...A WEAK COOL FRONT MOVING IN FROM THE WEST...PEAK DAYTIME HEATING THIS AFTERNOON...AND THE UPPER DISTURBANCE WILL ALL TEAM UP TO HELP SHOWER AND THUNDERSTORM DEVELOPMENT. STRONG...TO POSSIBLY SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS...LARGE HAIL AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION SHOULD NOT BE NEEDED. LAZ010-011-017>022-TXZ136-149>153-165>167-171715- DE SOTO-RED RIVER-SABINE LA-NATCHITOCHES-WINN-GRANT-CALDWELL- LA SALLE-SMITH-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA- SAN AUGUSTINE-SABINE TX- 1215 PM CDT SUN MAY 16 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST AND NORTH CENTRAL LOUISIANA AND FOR DEEP EAST TEXAS AND PORTIONS OF NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... FOR AREAS GENERALLY SOUTH OF I-20...SHOWER AND THUNDERSTORM DEVELOPMENT TODAY WILL BE PRIMARILY FROM DAYTIME HEATING AHEAD OF A WEAK COOL FRONT. HOWEVER...AS AN UPPER DISTURBANCE MOVES BY JUST TO THE NORTH. STRONGER THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WINDS AND SMALL HAIL WILL BE POSSIBLE...ESPECIALLY DURING THE MID TO LATE AFTERNOON AND ON INTO THIS EVENING AS THE WEAK COOL FRONT DRIFTS DOWN INTO THE AREA. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... SHOWERS AND ISOLATED THUNDERSTORMS MAY LINGER INTO MONDAY MORNING SOUTH OF THE I-20...AS THE WEAK FRONTAL BOUNDARY CONTINUES TO SLOWLY DRIFT SOUTH. HOWEVER...HAZARDOUS WEATHER IS NOT EXPECTED. THIS ACTIVITY SHOULD DIE DOWN BY MONDAY AFTERNOON. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 24
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</html>The national radar mosaic for the moment the first event began.
3 hail, 3 thunderstorm wind. Local standard time, as filed.
Hail damaged the outer skirting of a mobile home outside of Marthaville along Hwy. 487 near Ajax, Louisiana.
Trees were snapped and uprooted along Hwy. 487 between Marthaville and Ajax, Louisiana.
Large hail damaged an automobile and broke windows in a home north northwest of Robeline, Louisiana.
Several large tree limbs were downed north northwest of Robeline, Louisiana.
A tree was downed near the community of Thompson Ferry, 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, 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 2026-09-30. Each event’s entry at NCEI: 220244, 220245, 220224, 220225, 220226, 220993.