Alert archive / Louisiana / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 124, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 17, 2010, 1:18 AM CDT for 4 parishes in Louisiana. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 17, 2010, 1:18 AM CDT (06:18 UTC)
- Expired
- May 17, 2010, 2:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties De Soto Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA
The radar
The Shreveport radar (KSHV), 76 km from the middle of the area, began a volume at 06:18 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 6.3 hours before the alert went out and 320 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1191 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 900 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 16, 9:25 PM CDT, 3 hours 53 minutes earlier.
Area forecast discussion, May 16, 9:25 PM CDT, 3 hours 53 minutes before
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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
In the hours before
Special weather statement, May 16, 9:23 PM CDT, 3 hours 55 minutes before
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</html>Special weather statement, May 16, 11:37 PM CDT, 1 hour 41 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 10:25 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Franklin, Upshur, Wood | 50 min |
| May 17, 12:49 AM CDT | Severe Thunderstorm Warning | SHV | Nacogdoches, Shelby | 41 min |
| May 17, 12:02 AM CDT | Severe Thunderstorm Warning | SHV | De Soto, Red River | 58 min |
| May 17, 12:29 AM CDT | Areal Flood Advisory | SHV | De Soto, Red River | 61 min |
| May 17, 2:56 AM CDT | Severe Thunderstorm Warning | SHV | Grant, LaSalle | 49 min |
| May 16, 7:58 PM CDT | Severe Thunderstorm Warning | SHV | Union | 32 min |
| May 16, 8:22 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Union | 53 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.