Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 20, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Mar 17, 2021, 3:33 PM CDT for Covington County, Jefferson Davis County, Lawrence County, Mississippi. It was in force for 42 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
- Mar 17, 2021, 3:33 PM CDT (20:33 UTC)
- Expired
- Mar 17, 2021, 4:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Covington County, MS, Jefferson Davis County, MS, Lawrence County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 75 km from the middle of the area, began a volume at 20:33 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 17, 11:36 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 8.6 hours before the alert went out and 80 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
- 687 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 218 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.9
The text
As transmitted.
531
WUUS54 KJAN 172033
SVRJAN
MSC031-065-077-172115-
/O.NEW.KJAN.SV.W.0020.210317T2033Z-210317T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
333 PM CDT Wed Mar 17 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Eastern Lawrence County in south central Mississippi...
Northwestern Covington County in southeastern Mississippi...
Northwestern Jefferson Davis County in south central Mississippi...
* Until 415 PM CDT.
* At 333 PM CDT, a severe thunderstorm was located over Arm, or 22
miles northwest of Columbia, moving northeast at 40 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...
Prentiss around 345 PM CDT.
Clem around 400 PM CDT.
Mount Olive around 410 PM CDT.
Other locations impacted by this severe thunderstorm include New
Hebron and Silver Creek.
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 700 PM CDT for south central
and southeastern Mississippi.
LAT...LON 3153 9016 3176 8998 3178 8962 3141 9001
TIME...MOT...LOC 2033Z 222DEG 36KT 3153 9003
HAIL...1.00IN
WIND...60MPH
$$
TW2 follow-up statements
067
WWUS54 KJAN 172043
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
343 PM CDT Wed Mar 17 2021
MSC077-172052-
/O.CAN.KJAN.SV.W.0020.000000T0000Z-210317T2115Z/
Lawrence MS-
343 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LAWRENCE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM CDT for south central,
central and southeastern Mississippi.
LAT...LON 3152 8998 3168 8997 3177 8984 3178 8962
3152 8990
TIME...MOT...LOC 2042Z 227DEG 36KT 3159 8993
$$
MSC031-065-172115-
/O.CON.KJAN.SV.W.0020.000000T0000Z-210317T2115Z/
Covington MS-Jefferson Davis MS-
343 PM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR NORTHWESTERN COVINGTON AND NORTHWESTERN JEFFERSON DAVIS
COUNTIES...
At 342 PM CDT, a severe thunderstorm was located near Prentiss, or 19
miles south of Pinola, moving northeast at 40 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...
Clem around 400 PM CDT.
Mount Olive around 410 PM CDT.
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 700 PM CDT for south central,
central and southeastern Mississippi.
LAT...LON 3152 8998 3168 8997 3177 8984 3178 8962
3152 8990
TIME...MOT...LOC 2042Z 227DEG 36KT 3159 8993
HAIL...1.00IN
WIND...60MPH
$$
TW653 WWUS54 KJAN 172100 SVSJAN Severe Weather Statement National Weather Service Jackson MS 400 PM CDT Wed Mar 17 2021 MSC031-065-172115- /O.CON.KJAN.SV.W.0020.000000T0000Z-210317T2115Z/ Covington MS-Jefferson Davis MS- 400 PM CDT Wed Mar 17 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR NORTHWESTERN COVINGTON AND NORTHWESTERN JEFFERSON DAVIS COUNTIES... At 400 PM CDT, a severe thunderstorm was located over Clem, or 11 miles south of Magee, moving northeast at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Mount Olive around 410 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && A Tornado Watch remains in effect until 700 PM CDT for south central and southeastern Mississippi. LAT...LON 3164 8993 3177 8981 3178 8962 3160 8981 TIME...MOT...LOC 2100Z 229DEG 36KT 3171 8978 HAIL...<.75IN WIND...60MPH $$ TW
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 7:01 PM CDT | Tornado Warning | JAN | Copiah, Lawrence, Simpson | 31 min |
| Mar 16, 7:02 PM CDT | Severe Thunderstorm Warning | JAN | Attala | 36 min |
| Mar 16, 7:32 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence, Simpson | 58 min |
| Mar 16, 7:33 PM CDT | Special Weather Statement | JAN | Choctaw | 27 min |
| Mar 16, 8:29 PM CDT | Special Weather Statement | JAN | Simpson | 46 min |
| Mar 16, 8:49 PM CDT | Special Weather Statement | JAN | Kemper, Newton | 56 min |
| Mar 16, 9:50 PM CDT | Special Weather Statement | JAN | Lauderdale | 25 min |
| Mar 17, 6:05 AM CDT | Tornado Warning | JAN | Bolivar | 40 min |
| Mar 17, 6:44 AM CDT | Tornado Warning | JAN | Bolivar | 19 min |
| Mar 17, 11:37 AM CDT | Special Weather Statement | JAN | Jones | 38 min |
| Mar 17, 12:07 PM CDT | Tornado Warning | JAN | Clarke | 53 min |
| Mar 17, 12:22 PM CDT | Tornado Warning | JAN | Clarke, Lauderdale | 54 min |
| Mar 17, 12:50 PM CDT | Tornado Warning | JAN | Copiah, Lawrence, Lincoln | 55 min |
| Mar 17, 1:00 PM CDT | Severe Thunderstorm Warning | JAN | Kemper, Lauderdale, Noxubee | 45 min |
| Mar 17, 1:28 PM CDT | Tornado Warning | JAN | Jones | 15 min |
| Mar 17, 1:45 PM CDT | Tornado Warning | JAN | Jones | 21 min |
| Mar 17, 4:10 PM CDT | Tornado Warning | JAN | Adams, Franklin | 50 min |
| Mar 17, 4:34 PM CDT | Severe Thunderstorm Warning | JAN | Claiborne, Copiah, Hinds, Jefferson, Warren | 56 min |
| Mar 17, 4:45 PM CDT | Severe Thunderstorm Warning | JAN | Bolivar, Washington | 60 min |
| Mar 17, 4:52 PM CDT | Tornado Warning | JAN | Copiah, Jefferson, Lincoln | 37 min |
| Mar 17, 4:56 PM CDT | Tornado Warning | JAN | Bolivar, Washington | 29 min |
| Mar 17, 5:15 PM CDT | Severe Thunderstorm Warning | JAN | Hinds, Madison, Rankin, Yazoo | 64 min |
| Mar 17, 5:20 PM CDT | Tornado Warning | JAN | Jasper, Smith | 55 min |
| Mar 17, 5:45 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Lawrence, Marion | 34 min |
| Mar 17, 5:55 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Choctaw, Holmes, Leake, Montgomery, Neshoba and 2 more | 65 min |
| Mar 17, 6:05 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Neshoba, Newton, Scott | 55 min |
| Mar 17, 6:12 PM CDT | Severe Thunderstorm Warning | JAN | Covington, Simpson, Smith | 48 min |
| Mar 17, 6:13 PM CDT | Severe Thunderstorm Warning | JAN | Forrest, Lamar | 47 min |
| Mar 17, 6:28 PM CDT | Severe Thunderstorm Warning | JAN | Jasper, Jones | 48 min |
| Mar 17, 6:42 PM CDT | Severe Thunderstorm Warning | JAN | Choctaw, Clay, Kemper, Lowndes, Neshoba, Noxubee and 3 more | 76 min |
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.