Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS Jackson, MS

March 31, 2021Covington County, Simpson County, Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 31, 2021, 11:29 AM CDT for Covington County, Simpson County, Smith County, Mississippi. It was in force for 61 min. 2 reports 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: Mar 31, 2021, 11:29 AM CDT (16:29 UTC)
Expired: Mar 31, 2021, 12:30 PM CDT
In force: 61 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Covington County, MS, Simpson County, MS, Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 61 km from the middle of the area, began a volume at 16:31 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
Mar 31, 12:01 PM CDT	TSTM WND DMG	2 Wsw Mize, MS	TREE DOWN ACROSS SCR 59.
Mar 31, 12:04 PM CDT	TSTM WND DMG	5 Ssw Mize, MS	TREE DOWN ACROSS SCR 45.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 31, 11:19 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.5 hours before the alert went out and 70 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: 1030 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted.

334 
WUUS54 KJAN 311629
SVRJAN
MSC031-127-129-311730-
/O.NEW.KJAN.SV.W.0066.210331T1629Z-210331T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1129 AM CDT Wed Mar 31 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Southeastern Simpson County in central Mississippi...
  Southern Smith County in central Mississippi...
  Northern Covington County in southeastern Mississippi...

* Until 1230 PM CDT.

* At 1129 AM CDT, a severe thunderstorm was located over Pinola,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Mendenhall around 1135 AM CDT.
  Sanatorium around 1145 AM CDT.
  Magee around 1150 AM CDT.
  Mount Olive around 1155 AM CDT.
  Center Ridge around 1205 PM CDT.
  Taylorsville around 1210 PM CDT.

Other locations impacted by this severe thunderstorm include Mize.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3175 8976 3177 8976 3180 9009 3197 9004
      3195 8932 3180 8932 3180 8940 3171 8940
TIME...MOT...LOC 1629Z 273DEG 40KT 3188 8997 

HAIL...0.75IN
WIND...60MPH
 
$$

TW

5 follow-up statements

375 
WWUS54 KJAN 311638
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1138 AM CDT Wed Mar 31 2021

MSC031-127-129-311730-
/O.CON.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Simpson MS-Smith MS-Covington MS-
1138 AM CDT Wed Mar 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR SOUTHEASTERN SIMPSON...SOUTHERN SMITH AND NORTHERN COVINGTON
COUNTIES...

At 1138 AM CDT, a severe thunderstorm was located near Sanatorium, or
near Mendenhall, moving east at 45 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...
  Sanatorium around 1145 AM CDT.
  Magee around 1150 AM CDT.
  Mount Olive around 1155 AM CDT.
  Center Ridge around 1210 PM CDT.
  Taylorsville around 1215 PM CDT.

Other locations impacted by this severe thunderstorm include Mize.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3175 8976 3177 8976 3179 8998 3197 8993
      3195 8932 3180 8932 3180 8940 3171 8940
TIME...MOT...LOC 1638Z 272DEG 38KT 3188 8987 

HAIL...1.00IN
WIND...60MPH
 
$$

TW

510 
WWUS54 KJAN 311650
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1150 AM CDT Wed Mar 31 2021

MSC031-127-129-311730-
/O.CON.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Simpson MS-Smith MS-Covington MS-
1150 AM CDT Wed Mar 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR SOUTHEASTERN SIMPSON...SOUTHERN SMITH AND NORTHERN COVINGTON
COUNTIES...

At 1150 AM CDT, a severe thunderstorm was located over Magee, moving
east at 40 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Mount Olive around 1200 PM CDT.
  Taylorsville around 1215 PM CDT.

Other locations impacted by this severe thunderstorm include Mize.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3175 8976 3177 8976 3178 8984 3197 8979
      3195 8932 3180 8932 3180 8940 3171 8940
TIME...MOT...LOC 1650Z 278DEG 34KT 3185 8972 

HAIL...0.88IN
WIND...60MPH
 
$$

TW

139 
WWUS54 KJAN 311659
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1159 AM CDT Wed Mar 31 2021

MSC127-311708-
/O.CAN.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Simpson MS-
1159 AM CDT Wed Mar 31 2021

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

A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
central, southeastern and east central Mississippi.

LAT...LON 3174 8966 3196 8965 3195 8932 3180 8932
      3180 8940 3171 8940
TIME...MOT...LOC 1658Z 273DEG 40KT 3184 8960 

$$

MSC031-129-311730-
/O.CON.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Smith MS-Covington MS-
1159 AM CDT Wed Mar 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR SOUTHERN SMITH AND NORTHEASTERN COVINGTON COUNTIES...

At 1158 AM CDT, a severe thunderstorm was located near Mount Olive,
or 7 miles east of Magee, moving east at 45 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Taylorsville and Center Ridge around 1210 PM CDT.

Other locations impacted by this severe thunderstorm include Mize.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3174 8966 3196 8965 3195 8932 3180 8932
      3180 8940 3171 8940
TIME...MOT...LOC 1658Z 273DEG 40KT 3184 8960 

HAIL...0.88IN
WIND...60MPH
 
$$

TW

645 
WWUS54 KJAN 311712
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1212 PM CDT Wed Mar 31 2021

MSC031-129-311730-
/O.CON.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Smith MS-Covington MS-
1212 PM CDT Wed Mar 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR SOUTHEASTERN SMITH AND NORTHEASTERN COVINGTON COUNTIES...

At 1212 PM CDT, a severe thunderstorm was located over Taylorsville,
or 10 miles west of Stringer, moving east at 45 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
southeastern Smith and northeastern Covington Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3173 8956 3196 8950 3195 8932 3180 8932
      3180 8940 3171 8940
TIME...MOT...LOC 1712Z 272DEG 39KT 3183 8944 

HAIL...0.75IN
WIND...60MPH
 
$$

TW

552 
WWUS54 KJAN 311728
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1228 PM CDT Wed Mar 31 2021

MSC031-129-311738-
/O.EXP.KJAN.SV.W.0066.000000T0000Z-210331T1730Z/
Smith MS-Covington MS-
1228 PM CDT Wed Mar 31 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SMITH AND
NORTHEASTERN COVINGTON COUNTIES WILL EXPIRE AT 1230 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
central, southeastern and east central Mississippi.

LAT...LON 3173 8956 3196 8950 3195 8932 3180 8932
      3180 8940 3171 8940
TIME...MOT...LOC 1728Z 273DEG 40KT 3182 8923 

$$

TW

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 30, 11:06 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery, Webster	39 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, 11:33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.