Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 2:28 PM CDT for 4 parishes in Louisiana. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2021, 2:28 PM CDT (19:28 UTC)
- Expired
- Apr 9, 2021, 3:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, Webster Parish, LA
The radar
The Shreveport radar (KSHV), 48 km from the middle of the area, began a volume at 19:28 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 |
|---|---|---|---|
| Apr 9, 12:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 7.5 hours before the alert went out and 41 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
- 928 J/kg
- Mixed-layer CIN
- -310 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
723
WUUS54 KSHV 091928
SVRSHV
LAC015-017-027-119-092015-
/O.NEW.KSHV.SV.W.0055.210409T1928Z-210409T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
228 PM CDT Fri Apr 9 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Northwestern Webster Parish in northwestern Louisiana...
Northeastern Caddo Parish in northwestern Louisiana...
West central Claiborne Parish in northwestern Louisiana...
Central Bossier Parish in northwestern Louisiana...
* Until 315 PM CDT.
* At 228 PM CDT, a severe thunderstorm was located over Benton, or 12
miles north of Bossier City, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Springhill, Benton, Cullen, Cotton Valley, Sarepta, Shongaloo,
Evergreen, Alden Bridge, Rocky Mount, Leton, Linton, Bellevue,
Ivan, Couchwood and Red Chute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3256 9368 3273 9383 3302 9342 3302 9333
3284 9314
TIME...MOT...LOC 1928Z 233DEG 41KT 3270 9369
HAIL...1.00IN
WIND...60MPH
$$
443 follow-up statements
712
WWUS54 KSHV 091936
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
236 PM CDT Fri Apr 9 2021
LAC017-091946-
/O.CAN.KSHV.SV.W.0055.000000T0000Z-210409T2015Z/
Caddo LA-
236 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CADDO PARISH IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
southwestern Arkansas...and northwestern Louisiana.
LAT...LON 3260 9360 3277 9377 3302 9342 3302 9333
3284 9314
TIME...MOT...LOC 1936Z 233DEG 41KT 3276 9360
$$
LAC015-027-119-092015-
/O.CON.KSHV.SV.W.0055.000000T0000Z-210409T2015Z/
Webster LA-Claiborne LA-Bossier LA-
236 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHWESTERN WEBSTER...WEST CENTRAL CLAIBORNE AND NORTHERN
BOSSIER PARISHES...
At 236 PM CDT, a severe thunderstorm was located 9 miles northeast of
Benton, or 16 miles north of Bossier City, moving northeast at 45
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Springhill, Cullen, Cotton Valley, Sarepta, Shongaloo, Evergreen,
Alden Bridge, Rocky Mount, Leton, Linton, Bellevue, Ivan, Couchwood
and Red Chute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3260 9360 3277 9377 3302 9342 3302 9333
3284 9314
TIME...MOT...LOC 1936Z 233DEG 41KT 3276 9360
HAIL...1.00IN
WIND...60MPH
$$
44212
WWUS54 KSHV 091952
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
252 PM CDT Fri Apr 9 2021
LAC015-027-119-092015-
/O.CON.KSHV.SV.W.0055.000000T0000Z-210409T2015Z/
Webster LA-Claiborne LA-Bossier LA-
252 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHWESTERN WEBSTER...WEST CENTRAL CLAIBORNE AND NORTHEASTERN
BOSSIER PARISHES...
At 252 PM CDT, a severe thunderstorm was located over Sarepta, or 9
miles south of Springhill, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Springhill, Cullen, Cotton Valley, Sarepta, Shongaloo, Evergreen,
Leton and Couchwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3269 9343 3289 9360 3302 9342 3302 9333
3284 9314
TIME...MOT...LOC 1952Z 233DEG 41KT 3287 9342
HAIL...1.00IN
WIND...60MPH
$$
44740
WWUS54 KSHV 092000
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
300 PM CDT Fri Apr 9 2021
LAC015-027-119-092010-
/O.CAN.KSHV.SV.W.0055.000000T0000Z-210409T2015Z/
Webster LA-Claiborne LA-Bossier LA-
300 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WEBSTER...WEST
CENTRAL CLAIBORNE AND NORTHEASTERN BOSSIER PARISHES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
southwestern Arkansas...and northwestern Louisiana.
LAT...LON 3269 9343 3289 9360 3302 9342 3302 9333
3284 9314
TIME...MOT...LOC 1955Z 233DEG 41KT 3293 9333
$$
44The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 2:51 PM CDT | Special Weather Statement | SHV | Caddo | 39 min |
| Apr 9, 4:28 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Claiborne, Lincoln, Webster | 47 min |
| Apr 9, 5:01 PM CDT | Severe Thunderstorm Warning | SHV | Union | 44 min |
| Apr 9, 5:15 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne, Lincoln, Ouachita, Union | 45 min |
| Apr 9, 5:38 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Claiborne, Webster | 67 min |
| Apr 9, 5:40 PM CDT | Special Weather Statement | SHV | De Soto | 50 min |
| Apr 9, 5:44 PM CDT | Severe Thunderstorm Warning | SHV | Ouachita, Union | 46 min |
| Apr 9, 5:49 PM CDT | Severe Thunderstorm Warning | SHV | De Soto | 56 min |
| Apr 9, 5:54 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Winn | 66 min |
| Apr 9, 5:58 PM CDT | Severe Thunderstorm Warning | SHV | Union | 21 min |
| Apr 9, 6:23 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Lincoln, Natchitoches, Red River, Winn | 52 min |
| Apr 9, 6:27 PM CDT | Special Weather Statement | SHV | Bienville | 48 min |
| Apr 9, 6:37 PM CDT | Special Weather Statement | SHV | Ouachita | 38 min |
| Apr 9, 6:40 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Claiborne, Lincoln, Union | 65 min |
| Apr 9, 6:49 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Caddo, De Soto, Red River | 56 min |
| Apr 9, 6:55 PM CDT | Severe Thunderstorm Warning | SHV | Ouachita, Union | 65 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Every severe thunderstorm warning in 2021
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.