Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 70, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Apr 7, 2021, 9:24 PM CDT for 4 counties in Mississippi. It was in force for 40 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 7, 2021, 9:24 PM CDT (02:24 UTC)
- Expired
- Apr 7, 2021, 10:04 PM CDT
- In force
- 40 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carroll County, MS, Holmes County, MS, Humphreys County, MS, Leflore County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 113 km from the middle of the area, began a volume at 02:27 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, 2.4 hours before the alert went out and 107 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
- 652 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 146 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.4
The text
As transmitted.
200
WUUS54 KJAN 080224
SVRJAN
MSC015-051-053-083-080315-
/O.NEW.KJAN.SV.W.0070.210408T0224Z-210408T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
924 PM CDT Wed Apr 7 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Northwestern Holmes County in central Mississippi...
Western Carroll County in north central Mississippi...
Southern Leflore County in north central Mississippi...
Central Humphreys County in central Mississippi...
* Until 1015 PM CDT.
* At 924 PM CDT, severe thunderstorms were located along a line
extending from near Moorhead to near Swiftown to near Belzoni to 6
miles southwest of Midnight, 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...
Swiftown around 930 PM CDT.
Itta Bena and Quito around 940 PM CDT.
Thornton, Tchula, Sidon and Howard around 945 PM CDT.
Seven Pines around 950 PM CDT.
Greenwood and Black Hawk around 955 PM CDT.
Lexington around 1005 PM CDT.
Other locations impacted by these severe thunderstorms include Silver
City, Morgan City, Cruger and Louise.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3331 8999 3310 8999 3297 9066 3309 9066
3316 9045 3354 9045 3364 9010
TIME...MOT...LOC 0224Z 255DEG 43KT 3347 9057 3330 9047 3312 9048 3297
9062
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
TW3 follow-up statements
528
WWUS54 KJAN 080237
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
937 PM CDT Wed Apr 7 2021
MSC015-051-053-083-080315-
/O.CON.KJAN.SV.W.0070.000000T0000Z-210408T0315Z/
Holmes MS-Carroll MS-Leflore MS-Humphreys MS-
937 PM CDT Wed Apr 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHWESTERN HOLMES...WESTERN CARROLL...SOUTHERN LEFLORE AND
EASTERN HUMPHREYS COUNTIES...
At 937 PM CDT, severe thunderstorms were located along a line
extending from near Itta Bena to 6 miles south of Quito to near
Tchula to 7 miles east of Midnight, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Itta Bena around 940 PM CDT.
Tchula, Sidon and Quito around 945 PM CDT.
Seven Pines around 950 PM CDT.
Greenwood and Black Hawk around 955 PM CDT.
Howard around 1000 PM CDT.
Lexington around 1005 PM CDT.
Other locations impacted by these severe thunderstorms include Morgan
City and Cruger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3331 8999 3310 8999 3301 9045 3354 9045
3364 9010
TIME...MOT...LOC 0237Z 255DEG 43KT 3351 9040 3334 9030 3316 9031 3301
9045
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
TW119
WWUS54 KJAN 080253
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
953 PM CDT Wed Apr 7 2021
MSC053-080302-
/O.CAN.KJAN.SV.W.0070.000000T0000Z-210408T0315Z/
Humphreys MS-
953 PM CDT Wed Apr 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HUMPHREYS COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3331 8999 3310 8999 3304 9032 3335 9027
3358 9031 3364 9010
TIME...MOT...LOC 0252Z 252DEG 42KT 3357 9026 3341 9018 3321 9018 3306
9032
$$
MSC015-051-083-080315-
/O.CON.KJAN.SV.W.0070.000000T0000Z-210408T0315Z/
Holmes MS-Carroll MS-Leflore MS-
953 PM CDT Wed Apr 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR CENTRAL HOLMES...WESTERN CARROLL AND SOUTHEASTERN LEFLORE
COUNTIES...
At 952 PM CDT, severe thunderstorms were located along a line
extending from near Greenwood to Sidon to near Tchula to Thornton,
moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Seven Pines around 1000 PM CDT.
Black Hawk around 1005 PM CDT.
Lexington around 1015 PM CDT.
Other locations impacted by these severe thunderstorms include
Cruger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3331 8999 3310 8999 3304 9032 3335 9027
3358 9031 3364 9010
TIME...MOT...LOC 0252Z 252DEG 42KT 3357 9026 3341 9018 3321 9018 3306
9032
HAIL...<.75IN
WIND...60MPH
$$
TW630
WWUS54 KJAN 080304
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
1004 PM CDT Wed Apr 7 2021
MSC015-051-083-080313-
/O.CAN.KJAN.SV.W.0070.000000T0000Z-210408T0315Z/
Holmes MS-Carroll MS-Leflore MS-
1004 PM CDT Wed Apr 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HOLMES...WESTERN
CARROLL AND SOUTHEASTERN LEFLORE COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 3331 8999 3310 8999 3304 9032 3335 9027
3358 9031 3364 9010
TIME...MOT...LOC 0303Z 255DEG 43KT 3361 9010 3345 9002 3325 9002 3310
9016
$$
TWThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:05 PM CDT | Tornado Warning | JAN | Washington | 55 min |
| Apr 7, 8:41 PM CDT | Special Weather Statement | JAN | Attala | 64 min |
| Apr 7, 8:49 PM CDT | Tornado Warning | JAN | Humphreys, Issaquena, Sharkey, Sunflower, Washington | 56 min |
| Apr 7, 9:43 PM CDT | Severe Thunderstorm Warning | JAN | Adams | 47 min |
| Apr 8, 6:11 AM CDT | Dense Fog Advisory | JAN | Adams, Claiborne, Copiah, Franklin, Hinds, Issaquena and 9 more | 3 hr |
| Apr 8, 10:47 AM CDT | River Flood Warning | JAN | Madison, Yazoo | 11 days |
| Apr 8, 10:47 AM CDT | River Flood Warning | JAN | Hinds, Warren | 11 days |
| Apr 8, 10:49 AM CDT | River Flood Warning | JAN | Carroll, Leflore | 47 hr |
| Apr 8, 10:54 AM CDT | River Flood Warning | JAN | Bolivar, Washington | 50 hr |
| Apr 8, 10:57 AM CDT | River Flood Warning | JAN | Issaquena, Washington | 5 days |
Nearby
Severe 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.