Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Mobile, AL

March 30, 20214 counties in Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Mar 30, 2021, 5:05 PM CDT for 4 counties in Mississippi. It was in force for 40 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, 5:05 PM CDT (22:05 UTC)
Expired: Mar 30, 2021, 5:45 PM CDT
In force: 40 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties George County, MS, Greene County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 68 km from the middle of the area, began a volume at 22:04 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.1 hours before the alert went out and 115 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: 60 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

824 
WUUS54 KMOB 302205
SVRMOB
MSC039-041-111-131-302245-
/O.NEW.KMOB.SV.W.0034.210330T2205Z-210330T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
505 PM CDT Tue Mar 30 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northwestern George County in southeastern Mississippi...
  Southeastern Perry County in southeastern Mississippi...
  Southwestern Greene County in southeastern Mississippi...
  Northeastern Stone County in southeastern Mississippi...

* Until 545 PM CDT.

* At 505 PM CDT, a severe thunderstorm was located 10 miles east of
  Wiggins, moving northeast at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will remain over mainly rural areas of
  northwestern George, southeastern Perry, southwestern Greene and
  northeastern Stone Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3110 8893 3107 8882 3101 8870 3095 8862
      3079 8895 3085 8904
TIME...MOT...LOC 2205Z 222DEG 18KT 3085 8896 

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

CGAL

1 follow-up statement

049 
WWUS54 KMOB 302223
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
523 PM CDT Tue Mar 30 2021

MSC039-041-111-131-302245-
/O.CON.KMOB.SV.W.0034.000000T0000Z-210330T2245Z/
George MS-Perry MS-Greene MS-Stone MS-
523 PM CDT Tue Mar 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHWESTERN GEORGE...SOUTHEASTERN PERRY...SOUTHWESTERN GREENE
AND NORTHEASTERN STONE COUNTIES...

At 522 PM CDT, a severe thunderstorm was located 13 miles south of
McLain, or 15 miles east of Wiggins, moving northeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
northwestern George, southeastern Perry, southwestern Greene and
northeastern Stone Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3110 8893 3107 8882 3101 8870 3099 8867
      3085 8890 3090 8898
TIME...MOT...LOC 2222Z 222DEG 18KT 3092 8889 

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

CGAL

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 1:05 PM CDT	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	54 hr
Mar 30, 4:43 PM CDT	Special Weather Statement	MOB	Stone	47 min
Mar 30, 5:15 PM CDT	Severe Thunderstorm Warning	MOB	Stone	45 min
Mar 30, 5:46 PM CDT	Special Weather Statement	MOB	Greene	44 min
Mar 30, 5:59 PM CDT	Special Weather Statement	MOB	Stone	46 min
Mar 30, 6:17 PM CDT	Flash Flood Warning	MOB	George, Greene, Perry, Stone	3 hr
Mar 30, 6:33 PM CDT	Special Weather Statement	MOB	Greene	42 min
Mar 30, 6:44 PM CDT	Special Weather Statement	MOB	George	46 min
Mar 30, 6:49 PM CDT	Tornado Warning Tornado observed	MOB	Greene	41 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.