Alert archive / Louisiana / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 138, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 24, 2015, 1:36 PM CDT for Claiborne Parish, Lincoln Parish, Union Parish, Louisiana. It was in force for 39 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 24, 2015, 1:36 PM CDT (18:36 UTC)
- Expired
- May 24, 2015, 2:15 PM CDT
- In force
- 39 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Claiborne Parish, LA, Lincoln Parish, LA, Union Parish, LA
The radar
The Shreveport radar (KSHV), 114 km from the middle of the area, began a volume at 18:36 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 24, 12:34 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KBAD), launched 12:00Z, 6.6 hours before the alert went out and 105 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
- 718 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 173 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.5
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 24, 1:01 PM CDT, 35 minutes earlier.
Area forecast discussion, May 24, 1:01 PM CDT, 35 minutes before
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</html>Hazardous weather outlook, May 24, 6:17 AM CDT, 7 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 617 AM CDT SUN MAY 24 2015 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-241700- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-DE SOTO- RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE-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- 617 AM CDT SUN MAY 24 2015 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... SHOWERS AND THUNDERSTORMS WILL INCREASE ACROSS THE REGION TODAY...AHEAD OF A STRONG UPPER LEVEL DISTURBANCE THAT WILL LIFT NORTHEAST ACROSS THE AREA THIS AFTERNOON AND TONIGHT. DAYTIME HEATING WILL HELP TO DESTABLIZE THE AIR MASS AHEAD OF THIS DISTURBANCE...ESPECIALLY OVER DEEP EAST TEXAS...NORTH LOUISIANA AND SOUTHWEST ARKANSAS...AS STRONG SHEAR AND FORCING ALOFT AHEAD OF THIS DISTURBANCE SPREADS INTO THE REGION. ISOLATED TO SCATTERED SEVERE THUNDERSTORMS ARE POSSIBLE...WITH DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. HOWEVER...THE PRIMARY THREAT FROM THESE THUNDERSTORMS WILL BE LOCALLY HEAVY RAINFALL...WHICH WILL FALL OVER GROUNDS THAT STILL REMAIN SATURATED FROM EXCESSIVE RAINFALL THAT FELL EARLIER THIS PAST WEEK. ONE TO THREE INCHES OF RAIN...WITH ISOLATED HIGHER AMOUNTS...WILL BE POSSIBLE...WHICH WILL CONTRIBUTE TO INCREASED RUNOFF AND THE POTENTIAL FOR FLASH FLOODING. THE HEAVY RAIN AND ISOLATED SEVERE THUNDERSTORM THREAT WILL DIMINISH FROM WEST TO EAST THIS EVENING...ALTHOUGH SCATTERED SHOWERS AND THUNDERSTORMS WILL PERSIST OVERNIGHT MAINLY OVER DEEP EAST TEXAS AND NORTH LOUISIANA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... SHOWERS AND THUNDERSTORMS ARE EXPECTED TO INCREASE ONCE AGAIN MONDAY AFTERNOON AND EVENING OVER THE REGION...AHEAD OF ANOTHER STRONG UPPER LEVEL DISTURBANCE THAT WILL MOVE INTO THE SOUTHERN PLAINS. DAYTIME HEATING WILL CONTRIBUTE TO AIR MASS DESTABILIATION MONDAY AFTERNOON...SUCH THAT SCATTERED SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS AND ISOLATED TORNADOES WILL BE POSSIBLE OVER EAST TEXAS...SOUTHWEST ARKANSAS...AND NORTH LOUISIANA. HOWEVER...THE PRIMARY THREAT WILL AGAIN BE LOCALLY HEAVY RAINFALL...WITH ADDITIONAL AMOUNTS OF TWO TO IN EXCESS OF FOUR INCHES LIKELY. THIS WILL RESULT IN RAPID RUNOFF AND ENHANCE THE POTENTIAL FOR FLASH FLOODING OVER MUCH OF THE REGION. THE HEAVY RAINFALL THREAT WILL DIMINISH TUESDAY MORNING WITH THE DEPARTURE OF THIS DISTURBANCE. SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE WEDNESDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND AMATEUR RADIO OPERATORS...MAY BE NEEDED THIS AFTERNOON AND TONIGHT FOR THE POTENTIAL FOR ISOLATED SEVERE THUNDERSTORMS AND FLASH FLOODING...AS WELL AS RAINFALL REPORTS. 15
In the hours before
Local storm report, May 24, 1:00 PM CDT, 36 minutes before
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</html>Local storm report, May 24, 1:17 PM CDT, 19 minutes before
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</html>Local storm report, May 24, 1:18 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
118 PM CDT SUN MAY 24 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1200 PM TSTM WND DMG MARSHALL 32.54N 94.35W
05/24/2015 HARRISON TX LAW ENFORCEMENT
TREES ON HOMES NORTH OF MARSHALL ON 43 NORTH
&&
EVENT NUMBER SHV1500519
10Local storm report, May 24, 1:20 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
120 PM CDT SUN MAY 24 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1152 AM TSTM WND DMG MARSHALL 32.54N 94.35W
05/24/2015 HARRISON TX LAW ENFORCEMENT
TREES DOWN ON HWY 80... HWY 59... MARK HILL ROAD...
BIRMINGHAM ROAD... COX ROAD... REED ROGERS... FM 26...
25... 2983 WEST OF 59
&&
EVENT NUMBER SHV1500520
10Local storm report, May 24, 1:22 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
122 PM CDT SUN MAY 24 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1153 AM FUNNEL CLOUD MARSHALL 32.54N 94.35W
05/24/2015 HARRISON TX LAW ENFORCEMENT
FUNNEL CLOUD REPORTED ON 2625 WEST OF HWY 59
&&
EVENT NUMBER SHV1500521
25Local storm report, May 24, 1:24 PM CDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
124 PM CDT SUN MAY 24 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1155 AM FUNNEL CLOUD MARSHALL 32.54N 94.35W
05/24/2015 HARRISON TX LAW ENFORCEMENT
FUNNEL CLOUD REPORTED AT HIGHWAY 80 3MILES EAST OF
MARSHALL
&&
EVENT NUMBER SHV1500522
25The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 9:15 AM CDT | River Flood Warning | SHV | Cass, Harrison, Marion | 5 days |
| May 24, 10:35 AM CDT | Special Weather Statement | SHV | Camp, Franklin, Gregg, Nacogdoches, Rusk, Smith and 2 more | 40 min |
| May 24, 11:57 AM CDT | Tornado Warning | SHV | Harrison, Marion | 34 min |
| May 24, 11:59 AM CDT | Tornado Warning | SHV | Harrison, Marion | 46 min |
| May 24, 12:31 PM CDT | Tornado Warning | SHV | Cass, Marion | 7 min |
| May 24, 12:49 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 56 min |
| May 24, 2:28 PM CDT | River Flood Warning | SHV | Bowie | 19 days |
| May 24, 3:18 PM CDT | River Flood Warning | SHV | Smith, Wood | 21 days |
| May 24, 5:53 PM CDT | Special Weather Statement | SHV | Gregg | 37 min |
| May 24, 5:57 PM CDT | Tornado Warning | SHV | Cherokee, Gregg, Rusk, Smith | 48 min |
| May 24, 12:20 PM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Red River, Winn | 55 min |
| May 24, 2:28 PM CDT | River Flood Warning | SHV | Bossier, Caddo | 18 days |
| May 24, 2:39 PM CDT | Severe Thunderstorm Warning | SHV | Union | 66 min |
| May 24, 3:13 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita, Union | 29 min |
| May 24, 2:00 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Union | 30 min |
| May 24, 2:59 PM CDT | River Flood Warning | SHV | Little River, Sevier | 5 days |
| May 24, 2:59 PM CDT | River Flood Warning | SHV | Howard, Little River, Sevier | 7 days |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2015Every severe thunderstorm warning in 2015
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.