Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 72, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 7, 2021, 11:20 PM CDT for Calhoun County, Chickasaw County, Mississippi. It was in force for 25 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, 11:20 PM CDT (04:20 UTC)
- Expired
- Apr 7, 2021, 11:45 PM CDT
- In force
- 25 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Calhoun County, MS, Chickasaw County, MS
The radar
The Columbus AFB radar (KGWX), 65 km from the middle of the area, began a volume at 04:22 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
Little Rock, AR (KLZK), launched 00:00Z, 4.3 hours before the alert went out and 139 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
- 696 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 2.7
The text
As transmitted.
648
WUUS54 KMEG 080420
SVRMEG
MSC013-017-080445-
/O.NEW.KMEG.SV.W.0072.210408T0420Z-210408T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
1120 PM CDT Wed Apr 7 2021
The National Weather Service in Memphis has issued a
* Severe Thunderstorm Warning for...
Chickasaw County in northeastern Mississippi...
Southeastern Calhoun County in northeastern Mississippi...
* Until 1145 PM CDT.
* At 1120 PM CDT, a severe thunderstorm was located near Clarkson, or
12 miles west of Montpelier, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Houston, Okolona, Vardaman, Pyland, Trebloc, Woodland, Sparta,
Thorn, Van Vleet, Parkersburg, Egypt, Thelma, Tabbville, McCondy,
Anchor, Atlanta, Leotis and Buena Vista.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3393 8927 3408 8882 3407 8872 3381 8872
3381 8893 3375 8893 3375 8903 3374 8904
3374 8919 3372 8919 3372 8924
TIME...MOT...LOC 0420Z 254DEG 44KT 3373 8916
HAIL...<.75IN
WIND...60MPH
$$
SGW2 follow-up statements
242
WWUS54 KMEG 080430
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
1130 PM CDT Wed Apr 7 2021
MSC013-080440-
/O.CAN.KMEG.SV.W.0072.000000T0000Z-210408T0445Z/
Calhoun MS-
1130 PM CDT Wed Apr 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALHOUN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning hasmoved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3374 8912 3388 8914 3397 8914 3408 8883
3407 8872 3381 8872 3381 8893 3377 8893
TIME...MOT...LOC 0430Z 254DEG 44KT 3376 8901
$$
MSC017-080445-
/O.CON.KMEG.SV.W.0072.000000T0000Z-210408T0445Z/
Chickasaw MS-
1130 PM CDT Wed Apr 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR CHICKASAW COUNTY...
At 1130 PM CDT, a severe thunderstorm was located near Montpelier,
moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Houston, Okolona, Pyland, Trebloc, Woodland, Sparta, Thorn, Van
Vleet, Parkersburg, Egypt, Thelma, Tabbville, McCondy, Anchor, Leotis
and Buena Vista.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3374 8912 3388 8914 3397 8914 3408 8883
3407 8872 3381 8872 3381 8893 3377 8893
TIME...MOT...LOC 0430Z 254DEG 44KT 3376 8901
HAIL...<.75IN
WIND...60MPH
$$
SGW207
WWUS54 KMEG 080438
SVSMEG
Severe Weather Statement
National Weather Service Memphis TN
1138 PM CDT Wed Apr 7 2021
MSC017-080448-
/O.EXP.KMEG.SV.W.0072.000000T0000Z-210408T0445Z/
Chickasaw MS-
1138 PM CDT Wed Apr 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR CHICKASAW COUNTY WILL EXPIRE
AT 1145 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3374 8912 3388 8914 3397 8914 3408 8883
3407 8872 3381 8872 3381 8893 3377 8893
TIME...MOT...LOC 0438Z 254DEG 44KT 3379 8890
$$
SGWThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:23 PM CDT | Areal Flood Advisory | MEG | DeSoto | 2 hr |
| Apr 7, 7:24 PM CDT | Special Weather Statement | MEG | Marshall | 36 min |
| Apr 7, 7:59 PM CDT | Special Weather Statement | MEG | Coahoma, Tunica | 31 min |
| Apr 7, 8:21 PM CDT | Areal Flood Advisory | MEG | Coahoma, DeSoto, Panola, Quitman, Tate, Tunica | 91 min |
| Apr 7, 9:20 PM CDT | Special Weather Statement | MEG | Calhoun, Pontotoc | 25 min |
| Apr 7, 9:47 PM CDT | Special Weather Statement | MEG | Pontotoc | 28 min |
| Apr 7, 10:39 PM CDT | Special Weather Statement | MEG | Calhoun | 36 min |
| Apr 7, 11:07 PM CDT | Special Weather Statement | MEG | Chickasaw | 23 min |
| Apr 7, 11:40 PM CDT | Special Weather Statement | MEG | Monroe | 35 min |
| Apr 8, 2:41 AM CDT | Special Weather Statement | MEG | Chickasaw | 34 min |
| Apr 8, 2:59 AM CDT | Special Weather Statement | MEG | Lee | 31 min |
| Apr 8, 3:17 AM CDT | Areal Flood Advisory | MEG | Calhoun, Chickasaw, Lee, Monroe, Pontotoc | 3 hr |
| Apr 8, 3:31 AM CDT | Special Weather Statement | MEG | Monroe | 29 min |
| Apr 8, 3:54 AM CDT | Special Weather Statement | MEG | Itawamba | 36 min |
| Apr 8, 3:56 AM CDT | Tornado Warning | MEG | Itawamba | 49 min |
| Apr 8, 11:49 AM CDT | River Flood Warning | MEG | Monroe | 5 days |
| Apr 8, 11:57 AM CDT | River Flood Warning | MEG | Monroe | 71 hr |
| Apr 8, 12:08 PM CDT | River Flood Warning | MEG | Lowndes, Monroe | 6 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.