Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 11, NWS Jackson, MS

March 15, 2021Grenada County, Montgomery County, Webster County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 15, 2021, 11:53 PM CDT for Grenada County, Montgomery County, Webster County, Mississippi. It was in force for 36 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 15, 2021, 11:53 PM CDT (04:53 UTC)
Expired: Mar 16, 2021, 12:29 AM CDT
In force: 36 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

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

The radar

The Columbus AFB radar (KGWX), 112 km from the middle of the area, began a volume at 04:53 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, 4.9 hours before the alert went out and 131 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2890 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

595 
WUUS54 KJAN 160453
SVRJAN
MSC043-097-155-160545-
/O.NEW.KJAN.SV.W.0011.210316T0453Z-210316T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1153 PM CDT Mon Mar 15 2021

The National Weather Service in Jackson has issued a

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

* Until 1245 AM CDT.

* At 1152 PM CDT, a severe thunderstorm was located near Duck Hill,
  or 10 miles northeast of Winona, moving northeast at 35 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Duck Hill, Gore Springs, Sweatman, Misterton and Elliott. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3372 8951 3373 8919 3374 8919 3374 8914
      3351 8979 3368 8979 3368 8980 3371 8980
      3382 8951
TIME...MOT...LOC 0452Z 246DEG 32KT 3363 8965 

HAIL...1.00IN
WIND...<50MPH
 
$$

HJS

1 follow-up statement

098 
WWUS54 KJAN 160529
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1229 AM CDT Tue Mar 16 2021

MSC043-097-155-160538-
/O.CAN.KJAN.SV.W.0011.000000T0000Z-210316T0545Z/
Grenada MS-Webster MS-Montgomery MS-
1229 AM CDT Tue Mar 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRENADA...
NORTHWESTERN WEBSTER AND NORTHWESTERN MONTGOMERY COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled. However 
small hail and gusty winds are still possible with the remaining 
storms in the area.

LAT...LON 3372 8951 3373 8919 3374 8919 3374 8914
      3351 8979 3368 8979 3368 8980 3371 8980
      3382 8951
TIME...MOT...LOC 0527Z 246DEG 32KT 3366 8956 

$$

HJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 7:23 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Scott	38 min
Mar 15, 11:39 PM CDT	Special Weather Statement	JAN	Carroll, Leflore	36 min
Mar 16, 2:54 AM CDT	Flash Flood Warning	JAN	Clarke	6 hr
Mar 16, 6:52 AM CDT	Special Weather Statement	JAN	Jasper	38 min
Mar 16, 10:18 AM CDT	Flash Flood Warning	JAN	Clarke, Jasper	3 hr
Mar 16, 11:08 AM CDT	Flash Flood Warning	JAN	Covington, Jones, Smith	3 hr
Mar 16, 11:49 AM CDT	Flash Flood Watch	JAN	Clarke, Covington, Jasper, Jefferson Davis, Jones, Lauderdale and 4 more	7 hr
Mar 16, 2:40 PM CDT	River Flood Warning	JAN	Jones	5 days
Mar 16, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	40 min
Mar 16, 4:57 PM CDT	Special Weather Statement	JAN	Rankin	33 min
Mar 16, 4:58 PM CDT	Special Weather Statement	JAN	Winston	32 min
Mar 16, 5:17 PM CDT	Severe Thunderstorm Warning	JAN	Washington	43 min
Mar 16, 5:29 PM CDT	Special Weather Statement	JAN	Rankin	31 min
Mar 16, 6:34 PM CDT	Special Weather Statement	JAN	Copiah	26 min
Mar 16, 6:45 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	60 min
Mar 16, 6:59 PM CDT	Special Weather Statement	JAN	Attala	46 min

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.