Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 270, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Sep 1, 2021, 8:48 PM CDT for 4 counties in Mississippi. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 1, 2021, 8:48 PM CDT (01:48 UTC)
- Expired
- Sep 1, 2021, 9:45 PM CDT
- In force
- 57 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Claiborne County, MS, Copiah County, MS, Hinds County, MS, Warren County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 79 km from the middle of the area, began a volume at 01:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 1, 9:45 PM CDT | TSTM WND DMG | Wesson, MS | A TREE WAS BLOWN DOWN...REPORTED BY COPIAH SO. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 1.8 hours before the alert went out and 75 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
- 1607 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1520 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
326
WUUS54 KJAN 020148
SVRJAN
MSC021-029-049-149-020245-
/O.NEW.KJAN.SV.W.0270.210902T0148Z-210902T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
848 PM CDT Wed Sep 1 2021
The National Weather Service in Jackson has issued a
* Severe Thunderstorm Warning for...
Southeastern Warren County in west central Mississippi...
Claiborne County in southwestern Mississippi...
Southwestern Hinds County in central Mississippi...
Copiah County in central Mississippi...
* Until 945 PM CDT.
* At 848 PM CDT, severe thunderstorms were located along a line
extending from near Edwards to near Whites, moving southwest at 65
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Newman around 855 PM CDT.
Crystal Springs and Reganton around 900 PM CDT.
Hazlehurst, Rocky Springs and Gallman around 905 PM CDT.
Martinsville around 910 PM CDT.
Wesson, Hermanville and Glancy around 915 PM CDT.
Port Gibson and Pattison around 920 PM CDT.
Other locations impacted by these severe thunderstorms include
Beauregard and Learned.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3170 9073 3178 9074 3179 9084 3183 9084
3186 9101 3187 9115 3246 9070 3209 9029
3202 9024 3170 9033
TIME...MOT...LOC 0148Z 030DEG 57KT 3233 9065 3212 9021
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JNE1 follow-up statement
778
WWUS54 KJAN 020242
SVSJAN
Severe Weather Statement
National Weather Service Jackson MS
942 PM CDT Wed Sep 1 2021
MSC021-029-049-149-020252-
/O.EXP.KJAN.SV.W.0270.000000T0000Z-210902T0245Z/
Warren MS-Claiborne MS-Hinds MS-Copiah MS-
942 PM CDT Wed Sep 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN...
CLAIBORNE...SOUTHWESTERN HINDS AND COPIAH COUNTIES WILL EXPIRE AT 945
PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 3170 9073 3178 9074 3179 9084 3183 9084
3186 9101 3187 9115 3246 9070 3209 9029
3202 9024 3170 9033
TIME...MOT...LOC 0242Z 030DEG 57KT 3165 9111 3144 9067
$$
JNEThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 7:08 PM CDT | Severe Thunderstorm Warning | JAN | Covington, Jefferson Davis, Jones | 67 min |
| Sep 1, 7:18 PM CDT | Special Weather Statement | JAN | Simpson | 27 min |
| Sep 1, 7:29 PM CDT | Special Weather Statement | JAN | Yazoo | 46 min |
| Sep 1, 8:00 PM CDT | Severe Thunderstorm Warning | JAN | Hinds, Madison, Rankin, Warren, Yazoo | 60 min |
| Sep 1, 8:12 PM CDT | Special Weather Statement | JAN | Forrest, Lamar, Marion | 33 min |
| Sep 1, 9:22 PM CDT | Special Weather Statement | JAN | Warren | 38 min |
| Sep 1, 9:38 PM CDT | Special Weather Statement | JAN | Adams, Franklin, Jefferson | 37 min |
| Sep 1, 10:26 PM CDT | Special Weather Statement | JAN | Adams, Franklin, Jefferson, Lincoln | 34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.