Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 246, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 27, 2021, 5:34 PM CDT for Warren County, Mississippi; Madison Parish, Louisiana. It was in force for 41 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 27, 2021, 5:34 PM CDT (22:34 UTC)
- Expired
- Jul 27, 2021, 6:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Madison Parish, LA, Warren County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 88 km from the middle of the area, began a volume at 22:34 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 12:00Z, 10.6 hours before the alert went out and 79 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
- 863 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 917 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
008
WUUS54 KJAN 272234
SVRJAN
LAC065-MSC149-272315-
/O.NEW.KJAN.SV.W.0246.210727T2234Z-210727T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
534 PM CDT Tue Jul 27 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Southeastern Madison Parish in northeastern Louisiana...
Central Warren County in west central Mississippi...
* Until 615 PM CDT.
* At 534 PM CDT, a severe thunderstorm was located near Le Tourneau,
or near Vicksburg, moving northwest at 5 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Vicksburg, Le Tourneau, Yokena, Delta and Mound.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3245 9092 3245 9090 3244 9088 3245 9087
3226 9075 3213 9093 3229 9115
TIME...MOT...LOC 2234Z 134DEG 5KT 3227 9091
HAIL...0.75IN
WIND...60MPH
$$
NF2 follow-up statements
344
WWUS54 KJAN 272257
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
557 PM CDT Tue Jul 27 2021
LAC065-MSC149-272315-
/O.CON.KJAN.SV.W.0246.000000T0000Z-210727T2315Z/
Madison LA-Warren MS-
557 PM CDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHEASTERN MADISON PARISH IN NORTHEASTERN LOUISIANA AND CENTRAL
WARREN COUNTIES...
At 556 PM CDT, a severe thunderstorm was located near Vicksburg,
moving northwest at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Vicksburg, Le Tourneau, Yokena, Delta and Mound.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3245 9092 3245 9090 3244 9088 3245 9087
3226 9075 3213 9093 3229 9115
TIME...MOT...LOC 2256Z 142DEG 7KT 3231 9094
HAIL...<.75IN
WIND...60MPH
$$
NF041
WWUS54 KJAN 272310
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
610 PM CDT Tue Jul 27 2021
LAC065-MSC149-272320-
/O.EXP.KJAN.SV.W.0246.000000T0000Z-210727T2315Z/
Madison LA-Warren MS-
610 PM CDT Tue Jul 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MADISON PARISH IN
NORTHEASTERN LOUISIANA AND CENTRAL WARREN COUNTIES WILL EXPIRE AT 615
PM CDT...
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 will be allowed to expire. However gusty
winds and heavy rain are still possible with thunderstorms in this
area.
LAT...LON 3245 9092 3245 9090 3244 9088 3245 9087
3226 9075 3213 9093 3229 9115
TIME...MOT...LOC 2310Z 134DEG 5KT 3232 9095
$$
NFThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 7:24 PM CDT | Special Weather Statement | JAN | Oktibbeha | 66 min |
| Jul 26, 7:40 PM CDT | Special Weather Statement | JAN | Forrest | 65 min |
| Jul 26, 11:20 PM CDT | Flash Flood Warning | JAN | Leake, Scott | 2 hr |
| Jul 27, 2:54 PM CDT | Excessive Heat Warning | JAN | Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 33 more | 4 days |
| Jul 27, 2:54 PM CDT | Heat Advisory | JAN | Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 41 more | 5 days |
| Jul 27, 5:20 PM CDT | Special Weather Statement | JAN | Warren | 25 min |
| Jul 27, 6:14 PM CDT | Special Weather Statement | JAN | Warren | 31 min |
| Jul 27, 2:08 PM CDT | Severe Thunderstorm Warning | JAN | Catahoula | 52 min |
| Jul 27, 3:02 PM CDT | Special Weather Statement | JAN | Catahoula | 28 min |
| Jul 27, 3:19 PM CDT | Flash Flood Warning | JAN | Catahoula | 3 hr |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2021Severe 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.