Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 63, NWS Jackson, MS

March 30, 20214 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 30, 2021, 11:06 PM CDT for 4 counties in Mississippi. It was in force for 39 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 30, 2021, 11:06 PM CDT (04:06 UTC)
Expired: Mar 30, 2021, 11:45 PM CDT
In force: 39 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Carroll County, MS, Grenada County, MS, Montgomery County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 120 km from the middle of the area, began a volume at 04:08 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, 4.1 hours before the alert went out and 136 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 4 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

359 
WUUS54 KJAN 310406
SVRJAN
MSC015-043-097-155-310445-
/O.NEW.KJAN.SV.W.0063.210331T0406Z-210331T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1106 PM CDT Tue Mar 30 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  North central Carroll County in north central Mississippi...
  Southeastern Grenada County in north central Mississippi...
  West central Webster County in north central Mississippi...
  Northwestern Montgomery County in north central Mississippi...

* Until 1145 PM CDT.

* At 1106 PM CDT, a severe thunderstorm was located near Winona,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Winona around 1110 PM CDT.
  Duck Hill around 1120 PM CDT.
  Sweatman around 1130 PM CDT.
  Lodi and Misterton around 1135 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3372 8951 3372 8949 3353 8941 3349 8984
      3360 8987 3374 8951
TIME...MOT...LOC 0406Z 253DEG 26KT 3356 8979 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DL

1 follow-up statement

965 
WWUS54 KJAN 310424
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1124 PM CDT Tue Mar 30 2021

MSC015-310433-
/O.CAN.KJAN.SV.W.0063.000000T0000Z-210331T0445Z/
Carroll MS-
1124 PM CDT Tue Mar 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CARROLL COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3372 8951 3372 8949 3353 8941 3350 8977
      3364 8978 3374 8951
TIME...MOT...LOC 0423Z 249DEG 25KT 3361 8966 

$$

MSC043-097-155-310445-
/O.CON.KJAN.SV.W.0063.000000T0000Z-210331T0445Z/
Grenada MS-Webster MS-Montgomery MS-
1124 PM CDT Tue Mar 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHEASTERN GRENADA...WEST CENTRAL WEBSTER AND NORTHWESTERN
MONTGOMERY COUNTIES...

At 1123 PM CDT, a severe thunderstorm was located near Duck Hill, or
9 miles northeast of Winona, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  Sweatman, Misterton and Lodi around 1135 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3372 8951 3372 8949 3353 8941 3350 8977
      3364 8978 3374 8951
TIME...MOT...LOC 0423Z 249DEG 25KT 3361 8966 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

JC

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 7:16 PM CDT	Tornado Warning	JAN	Issaquena	47 min
Mar 30, 7:30 PM CDT	Special Weather Statement	JAN	Simpson	45 min
Mar 30, 7:47 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson	33 min
Mar 30, 7:50 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Washington	55 min
Mar 30, 9:07 PM CDT	Special Weather Statement	JAN	Humphreys	38 min
Mar 30, 9:20 PM CDT	Special Weather Statement	JAN	Oktibbeha	40 min
Mar 30, 9:57 PM CDT	Special Weather Statement	JAN	Carroll	48 min
Mar 30, 10:58 PM CDT	Special Weather Statement	JAN	Montgomery	62 min
Mar 31, 2:57 AM CDT	Wind Advisory	JAN	Adams, Bolivar, Carroll, Claiborne, Copiah, Franklin and 16 more	17 hr
Mar 31, 3:12 AM CDT	Special Weather Statement	JAN	Coahoma	18 min
Mar 31, 3:48 AM CDT	Special Weather Statement	JAN	Bolivar	42 min
Mar 31, 4:06 AM CDT	Special Weather Statement	JAN	Bolivar	24 min
Mar 31, 4:09 AM CDT	Special Weather Statement	JAN	Sunflower	36 min
Mar 31, 4:32 AM CDT	Special Weather Statement	JAN	Sunflower	28 min
Mar 31, 4:45 AM CDT	Special Weather Statement	JAN	Sunflower	30 min
Mar 31, 4:46 AM CDT	Special Weather Statement	JAN	Grenada	29 min
Mar 31, 7:14 AM CDT	Special Weather Statement	JAN	Choctaw	31 min
Mar 31, 7:18 AM CDT	Special Weather Statement	JAN	Yazoo	27 min
Mar 31, 7:43 AM CDT	Special Weather Statement	JAN	Attala	47 min
Mar 31, 8:10 AM CDT	Special Weather Statement	JAN	Madison	35 min
Mar 31, 8:27 AM CDT	Special Weather Statement	JAN	Madison	33 min
Mar 31, 8:39 AM CDT	Special Weather Statement	JAN	Leake, Neshoba	51 min
Mar 31, 9:12 AM CDT	River Flood Warning	JAN	Clay	4 days
Mar 31, 9:40 AM CDT	Special Weather Statement	JAN	Kemper	50 min
Mar 31, 10:34 AM CDT	Special Weather Statement	JAN	Madison	26 min
Mar 31, 10:34 AM CDT	Special Weather Statement	JAN	Kemper	41 min
Mar 31, 10:35 AM CDT	Special Weather Statement	JAN	Newton, Scott	40 min
Mar 31, 10:40 AM CDT	River Flood Warning	JAN	Jones	22 hr
Mar 31, 10:41 AM CDT	River Flood Warning	JAN	Carroll, Leflore	49 hr
Mar 31, 10:49 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	26 min
Mar 31, 10:55 AM CDT	Special Weather Statement	JAN	Scott	50 min
Mar 31, 11:00 AM CDT	Special Weather Statement	JAN	Lauderdale	60 min
Mar 31, 11:11 AM CDT	Special Weather Statement	JAN	Rankin, Simpson	64 min
Mar 31, 11:15 AM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	30 min
Mar 31, 11:29 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Simpson, Smith	61 min
Mar 31, 11:33 AM CDT	Special Weather Statement	JAN	Smith	42 min
Mar 31, 12:02 PM CDT	Special Weather Statement	JAN	Jasper	43 min
Mar 31, 12:13 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Jones	47 min
Mar 31, 12:31 PM CDT	Special Weather Statement	JAN	Clarke	44 min
Mar 31, 12:57 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	22 min
Mar 31, 1:14 PM CDT	Special Weather Statement	JAN	Jones	31 min
Mar 31, 2:03 PM CDT	Special Weather Statement	JAN	Forrest	27 min
Mar 31, 2:26 PM CDT	Freeze Watch	JAN	Attala, Bolivar, Carroll, Choctaw, Clarke, Clay and 15 more	20 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2021 Every 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.