Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 172, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Jun 8, 2021, 2:05 PM CDT for 6 parishes in Louisiana. It was in force for 55 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 8, 2021, 2:05 PM CDT (19:05 UTC)
- Expired
- Jun 8, 2021, 3:00 PM CDT
- In force
- 55 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caldwell Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA, Union Parish, LA, Winn Parish, LA
The radar
The Ft Polk radar (KPOE), 158 km from the middle of the area, began a volume at 19:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 8, 2:52 PM CDT | TSTM WND DMG | Monroe, LA | TREE LIMBS SNAPPED OFF AT KNOE STATION - AROUND 3 INCHES IN DIAMETER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 8, 12:42 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 7.1 hours before the alert went out and 159 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
- 1621 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted.
991
WUUS54 KSHV 081905
SVRSHV
LAC021-049-061-073-111-127-082000-
/O.NEW.KSHV.SV.W.0172.210608T1905Z-210608T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
205 PM CDT Tue Jun 8 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Caldwell Parish in north central Louisiana...
Jackson Parish in north central Louisiana...
Southeastern Union Parish in north central Louisiana...
Ouachita Parish in north central Louisiana...
Southeastern Lincoln Parish in north central Louisiana...
Northeastern Winn Parish in north central Louisiana...
* Until 300 PM CDT.
* At 204 PM CDT, severe thunderstorms were located along a line
extending from near Ruston to 10 miles east of Jonesboro to 9 miles
north of Winnfield, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Monroe, Ruston, Claiborne, West Monroe, Grambling, Columbia,
Swartz, Brownsville-Bawcom, Brownsville-Bawcomville, Richwood,
Sterlington, Clarks, Grayson, Choudrant, Chatham, Vienna, Dodson,
Eros, Downsville and Sikes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3207 9193 3197 9189 3200 9267 3225 9261
3258 9271 3277 9206 3269 9205 3271 9204
3271 9197 3266 9191 3260 9193 3251 9190
3240 9200 3228 9203 3227 9199 3219 9201
3217 9198 3216 9190 3212 9187 3209 9187
TIME...MOT...LOC 1904Z 270DEG 40KT 3257 9263 3225 9252 3206 9264
HAIL...<.75IN
WIND...60MPH
$$
042 follow-up statements
361
WWUS54 KSHV 081929
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
229 PM CDT Tue Jun 8 2021
LAC021-049-061-073-111-127-082000-
/O.CON.KSHV.SV.W.0172.000000T0000Z-210608T2000Z/
Caldwell LA-Jackson LA-Union LA-Ouachita LA-Lincoln LA-Winn LA-
229 PM CDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR CALDWELL...EASTERN JACKSON...SOUTHEASTERN UNION...OUACHITA...
SOUTHEASTERN LINCOLN AND NORTHEASTERN WINN PARISHES...
At 228 PM CDT, severe thunderstorms were located along a line
extending from 6 miles west of Claiborne to 12 miles northwest of
Columbia to 10 miles west of Clarks, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Monroe, Claiborne, West Monroe, Columbia, Swartz, Brownsville-Bawcom,
Brownsville-Bawcomville, Richwood, Sterlington, Clarks, Grayson,
Choudrant, Chatham, Eros, Downsville, Sikes, Drew, Fondale, Vixen and
Bosco.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3207 9193 3197 9189 3200 9267 3224 9258
3264 9251 3277 9206 3269 9205 3271 9204
3271 9197 3266 9191 3260 9193 3251 9190
3240 9200 3228 9203 3227 9199 3219 9201
3217 9198 3216 9190 3212 9187 3209 9187
TIME...MOT...LOC 1928Z 270DEG 40KT 3257 9231 3225 9220 3206 9232
HAIL...<.75IN
WIND...60MPH
$$
19505
WWUS54 KSHV 081944
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
244 PM CDT Tue Jun 8 2021
LAC061-081953-
/O.CAN.KSHV.SV.W.0172.000000T0000Z-210608T2000Z/
Lincoln LA-
244 PM CDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN PARISH IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
north central Louisiana.
LAT...LON 3207 9193 3197 9189 3200 9255 3228 9242
3267 9241 3277 9206 3269 9205 3271 9204
3271 9197 3266 9191 3260 9193 3251 9190
3240 9200 3228 9203 3227 9199 3219 9201
3217 9198 3216 9190 3212 9187 3209 9187
TIME...MOT...LOC 1943Z 270DEG 40KT 3257 9212 3225 9201 3206 9213
$$
LAC021-049-073-111-127-082000-
/O.CON.KSHV.SV.W.0172.000000T0000Z-210608T2000Z/
Caldwell LA-Jackson LA-Union LA-Ouachita LA-Winn LA-
244 PM CDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR CALDWELL...SOUTHEASTERN JACKSON...SOUTHEASTERN UNION...OUACHITA
AND NORTHEASTERN WINN PARISHES...
At 243 PM CDT, severe thunderstorms were located along a line
extending from near West Monroe to near Buckner to Grayson, moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Monroe, Claiborne, West Monroe, Columbia, Swartz, Brownsville-Bawcom,
Brownsville-Bawcomville, Richwood, Sterlington, Clarks, Grayson,
Eros, Downsville, Sikes, Drew, Fondale, Vixen, Bosco, Riverton and
Millhaven.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3207 9193 3197 9189 3200 9255 3228 9242
3267 9241 3277 9206 3269 9205 3271 9204
3271 9197 3266 9191 3260 9193 3251 9190
3240 9200 3228 9203 3227 9199 3219 9201
3217 9198 3216 9190 3212 9187 3209 9187
TIME...MOT...LOC 1943Z 270DEG 40KT 3257 9212 3225 9201 3206 9213
HAIL...<.75IN
WIND...60MPH
$$
19The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 7:43 PM CDT | Special Weather Statement | SHV | LaSalle | 62 min |
| Jun 8, 11:43 AM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 50 min |
| Jun 8, 12:05 PM CDT | Special Weather Statement | SHV | Sabine | 40 min |
| Jun 8, 12:17 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Caddo, De Soto, Red River, Webster | 43 min |
| Jun 8, 12:43 PM CDT | Special Weather Statement | SHV | Sabine | 47 min |
| Jun 8, 12:56 PM CDT | Special Weather Statement | SHV | Bienville, Red River | 34 min |
| Jun 8, 1:23 PM CDT | Special Weather Statement | SHV | Bienville | 52 min |
| Jun 8, 1:26 PM CDT | Special Weather Statement | SHV | Natchitoches | 49 min |
| Jun 8, 1:29 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Natchitoches, Winn | 46 min |
| Jun 8, 2:12 PM CDT | Special Weather Statement | SHV | Grant, LaSalle, Winn | 63 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.