Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at May 4, 2021, 11:57 AM CDT for Morehouse Parish, Louisiana; Ashley County, Arkansas. It was in force for 78 min. 6 reports 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
- May 4, 2021, 11:57 AM CDT (16:57 UTC)
- Expired
- May 4, 2021, 1:15 PM CDT
- In force
- 78 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Ashley County, AR, Morehouse Parish, LA
The radar
The Jackson/Brandon,MS radar (KDGX), 182 km from the middle of the area, began a volume at 16:56 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 |
|---|---|---|---|
| May 4, 12:02 PM CDT | HAIL 0.25 | 1 N Bastrop, LA | PEA SIZED HAIL DOWNTOWN BASTROP. |
| May 4, 12:26 PM CDT | HAIL 0.7 | 5 Ese Hamburg, AR | PEA TO DIME SIZED HAIL ACROSS THE COUNTY. |
| May 4, 12:52 PM CDT | TSTM WND DMG | 1 Ene Hamburg, AR | TREE DOWN ALONG HWY 82 E. |
| May 4, 1:01 PM CDT | TSTM WND DMG | 2 Nne Bastrop, LA | MULTIPLE TREES REPORTED DOWN IN THE BASTROP AND LOG CABIN AREAS. |
| May 4, 1:10 PM CDT | TSTM WND DMG | 7 Ne Beekman, LA | A FEW TREES DOWN. |
| May 4, 1:12 PM CDT | TSTM WND DMG | Oak Ridge, LA | A FEW TREES DOWN. |
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 |
|---|---|---|---|
| May 4, 10:52 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 5.0 hours before the alert went out and 172 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
- 2428 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 646 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 2.8
- Supercell composite
- 13.2
The text
As transmitted.
481
WUUS54 KJAN 041657
SVRJAN
ARC003-LAC067-041815-
/O.NEW.KJAN.SV.W.0124.210504T1657Z-210504T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1157 AM CDT Tue May 4 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Ashley County in southeastern Arkansas...
Morehouse Parish in northeastern Louisiana...
* Until 115 PM CDT.
* At 1157 AM CDT, a severe thunderstorm was located over Bastrop,
moving northeast at 35 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.
* This severe thunderstorm will be near...
Galion around 1215 PM CDT.
Jones around 1230 PM CDT.
Wilmot around 1245 PM CDT.
Parkdale around 1255 PM CDT.
Other locations impacted by this severe thunderstorm include Bonita,
Collinston, Mer Rouge and Oak Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A Tornado Watch remains in effect until 600 PM CDT for southeastern
Arkansas...and northeastern Louisiana.
LAT...LON 3340 9185 3339 9146 3301 9146 3289 9150
3285 9157 3270 9164 3267 9163 3256 9176
3257 9181 3253 9184 3254 9189 3252 9190
3261 9193 3266 9191 3266 9194 3271 9197
3270 9202 3277 9206 3301 9207 3308 9213
TIME...MOT...LOC 1657Z 227DEG 29KT 3277 9188
HAIL...1.00IN
WIND...60MPH
$$
CME3 follow-up statements
057
WWUS54 KJAN 041730
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
1230 PM CDT Tue May 4 2021
ARC003-LAC067-041815-
/O.CON.KJAN.SV.W.0124.000000T0000Z-210504T1815Z/
Ashley AR-Morehouse LA-
1230 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR ASHLEY COUNTY IN SOUTHEASTERN ARKANSAS AND MOREHOUSE PARISHES...
At 1221 PM CDT, a severe thunderstorm was located near Galion, or 13
miles east of Bastrop, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Jones around 1235 PM CDT.
Wilmot around 1250 PM CDT.
Other locations impacted by this severe thunderstorm include Bonita,
Collinston, Mer Rouge and Oak Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A Tornado Watch remains in effect until 600 PM CDT for southeastern
Arkansas...and northeastern Louisiana.
LAT...LON 3340 9185 3339 9146 3301 9146 3289 9150
3285 9157 3270 9164 3266 9164 3256 9176
3257 9181 3253 9184 3254 9189 3252 9190
3261 9193 3265 9191 3269 9192 3266 9194
3271 9197 3270 9202 3277 9206 3301 9207
TIME...MOT...LOC 1721Z 231DEG 27KT 3284 9170
HAIL...1.00IN
WIND...60MPH
$$
CME546
WWUS54 KJAN 041759
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
1259 PM CDT Tue May 4 2021
ARC003-LAC067-041815-
/O.CON.KJAN.SV.W.0124.000000T0000Z-210504T1815Z/
Ashley AR-Morehouse LA-
1259 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR ASHLEY COUNTY IN SOUTHEASTERN ARKANSAS AND MOREHOUSE PARISHES...
At 1258 PM CDT, a severe thunderstorm was located near Bastrop,
moving east at 45 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
This severe thunderstorm will remain over mainly rural areas of
Ashley County in southeastern Arkansas and Morehouse Parishes,
including the following locations... Bonita, Collinston, Mer Rouge
and Oak Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
A Tornado Watch remains in effect until 600 PM CDT for southeastern
Arkansas...and northeastern Louisiana.
LAT...LON 3340 9185 3339 9146 3301 9146 3289 9150
3285 9157 3270 9164 3266 9164 3256 9176
3257 9181 3253 9184 3254 9189 3252 9190
3261 9193 3265 9191 3269 9192 3266 9194
3271 9197 3270 9202 3277 9206 3301 9207
TIME...MOT...LOC 1758Z 253DEG 40KT 3271 9187
HAIL...0.75IN
WIND...70MPH
$$
CME808
WWUS54 KJAN 041806
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
106 PM CDT Tue May 4 2021
ARC003-LAC067-041815-
/O.CON.KJAN.SV.W.0124.000000T0000Z-210504T1815Z/
Ashley AR-Morehouse LA-
106 PM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CDT
FOR EASTERN ASHLEY COUNTY IN SOUTHEASTERN ARKANSAS AND MOREHOUSE
PARISHES...
At 106 PM CDT, severe thunderstorms were located along a line
extending from near Galion to near Start, moving east at 40 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Bastrop, Hamburg, Wilmot, Portland, Montrose, Parkdale, Berlin,
Beekman, Galion, Jones, Snyder, Mer Rouge, Collinston, Bonita and Oak
Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
A Tornado Watch remains in effect until 600 PM CDT for southeastern
Arkansas...and northeastern Louisiana.
LAT...LON 3339 9146 3301 9146 3289 9150 3285 9157
3270 9164 3266 9164 3256 9176 3257 9181
3253 9184 3254 9189 3252 9190 3261 9193
3265 9191 3269 9192 3266 9194 3271 9197
3295 9191 3340 9170
TIME...MOT...LOC 1806Z 250DEG 36KT 3291 9178 3253 9183
HAIL...<.75IN
WIND...70MPH
$$
CMEThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 12:30 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, West Carroll | 75 min |
| May 4, 12:37 PM CDT | Flash Flood Warning | JAN | Morehouse, West Carroll | 3 hr |
| May 4, 12:57 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Franklin, Madison, Richland, West Carroll | 76 min |
| May 4, 1:15 PM CDT | Severe Thunderstorm Warning | JAN | Catahoula, Concordia, Franklin, Tensas | 75 min |
| May 4, 1:37 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Madison | 53 min |
| May 4, 1:57 PM CDT | Severe Thunderstorm Warning | JAN | Tensas | 78 min |
| May 4, 3:51 PM CDT | Areal Flood Warning | JAN | Morehouse, West Carroll | 6 hr |
| May 4, 12:18 PM CDT | Severe Thunderstorm Warning | JAN | Chicot | 72 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Severe Thunderstorm Warnings in Arkansas, 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.