Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 242, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 12, 2021, 3:00 AM CDT for East Carroll Parish, Madison Parish, Louisiana; Issaquena County, Warren County, Mississippi. It was in force for 45 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
- Jul 12, 2021, 3:00 AM CDT (08:00 UTC)
- Expired
- Jul 12, 2021, 3:45 AM CDT
- In force
- 45 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties East Carroll Parish, LA, Madison Parish, LA, Issaquena County, MS, Warren County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 115 km from the middle of the area, began a volume at 08:00 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, 8.0 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
- 691 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
133
WUUS54 KJAN 120800
SVRJAN
LAC035-065-MSC055-149-120845-
/O.NEW.KJAN.SV.W.0242.210712T0800Z-210712T0845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
300 AM CDT Mon Jul 12 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Southeastern East Carroll Parish in northeastern Louisiana...
Madison Parish in northeastern Louisiana...
Central Warren County in west central Mississippi...
Southern Issaquena County in west central Mississippi...
* Until 345 AM CDT.
* At 259 AM CDT, severe thunderstorms were located along a line
extending from near Tendal to 6 miles southeast of Waverly to 8
miles southeast of Bakers, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Tallulah, Omega, Sondheimer, Afton, Mansford and Alsatia around
315 AM CDT.
Eagle Bend around 325 AM CDT.
Vicksburg, Valley Park and Le Tourneau around 335 AM CDT.
Redwood around 340 AM CDT.
Other locations impacted by these severe thunderstorms include Mound,
Delta and Richmond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and 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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3223 9151 3230 9153 3229 9150 3232 9147
3235 9150 3236 9145 3248 9149 3256 9143
3267 9096 3266 9073 3264 9069 3262 9072
3262 9069 3241 9076 3220 9090 3221 9112
3225 9113 3221 9124 3223 9127 3221 9155
TIME...MOT...LOC 0759Z 261DEG 42KT 3249 9136 3236 9137 3224 9144
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
DC1 follow-up statement
048
WWUS54 KJAN 120839
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
339 AM CDT Mon Jul 12 2021
LAC035-065-MSC055-149-120845-
/O.CON.KJAN.SV.W.0242.000000T0000Z-210712T0845Z/
East Carroll LA-Madison LA-Warren MS-Issaquena MS-
339 AM CDT Mon Jul 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SOUTHEASTERN EAST CARROLL AND CENTRAL MADISON PARISHES...CENTRAL
WARREN AND SOUTHWESTERN ISSAQUENA COUNTIES...
At 338 AM CDT, severe thunderstorms were located along a line
extending from near Eagle Bend to 6 miles southeast of Mansford to
near Afton, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Eagle Bend around 345 AM CDT.
Vicksburg and Le Tourneau around 355 AM CDT.
Redwood around 400 AM CDT.
Other locations impacted by these severe thunderstorms include Mound,
Delta and Richmond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3258 9129 3260 9097 3250 9073 3241 9076
3220 9090 3221 9112 3225 9113 3221 9124
3223 9127 3223 9132
TIME...MOT...LOC 0838Z 259DEG 34KT 3254 9104 3241 9105 3229 9112
HAIL...<.75IN
WIND...60MPH
$$
DCThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 2:15 AM CDT | Special Weather Statement | JAN | Franklin, Richland | 45 min |
| Jul 12, 2:33 AM CDT | Severe Thunderstorm Warning | JAN | Franklin, Richland | 42 min |
| Jul 12, 3:26 AM CDT | Special Weather Statement | JAN | Tensas | 49 min |
| Jul 12, 6:45 AM CDT | Special Weather Statement | JAN | Catahoula, Concordia, Tensas | 45 min |
| Jul 12, 3:45 AM CDT | Special Weather Statement | JAN | Warren | 45 min |
| Jul 12, 4:13 AM CDT | Special Weather Statement | JAN | Claiborne, Hinds, Warren | 47 min |
| Jul 12, 6:04 AM CDT | Special Weather Statement | JAN | Montgomery | 41 min |
| Jul 12, 7:44 AM CDT | Special Weather Statement | JAN | Jefferson | 61 min |
| Jul 12, 9:37 AM CDT | Special Weather Statement | JAN | Simpson | 53 min |
| Jul 12, 10:26 AM CDT | Special Weather Statement | JAN | Covington | 64 min |
| Jul 12, 11:10 AM CDT | Special Weather Statement | JAN | Forrest, Lamar | 65 min |
| Jul 12, 11:51 AM CDT | Special Weather Statement | JAN | Jones | 39 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2021Severe Thunderstorm Warnings in Mississippi, 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.