Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 184, NWS Mobile, AL

August 11, 2021Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Aug 11, 2021, 3:33 PM CDT for Wayne County, Mississippi. It was in force for 22 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: Aug 11, 2021, 3:33 PM CDT (20:33 UTC)
Expired: Aug 11, 2021, 3:55 PM CDT
In force: 22 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Wayne County, MS

The radar

The Mobile radar (KMOB), 100 km from the middle of the area, began a volume at 20:33 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

Jackson, MS (KJAN), launched 12:00Z, 8.6 hours before the alert went out and 162 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: 1448 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1031 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

962 
WUUS54 KMOB 112033
SVRMOB
MSC153-112115-
/O.NEW.KMOB.SV.W.0184.210811T2033Z-210811T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
333 PM CDT Wed Aug 11 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  South central Wayne County in southeastern Mississippi...

* Until 415 PM CDT.

* At 333 PM CDT, a severe thunderstorm was located 6 miles southwest
  of Buckatunna, or 13 miles south of Waynesboro, and is nearly
  stationary.

  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
  south central Wayne County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3159 8867 3148 8857 3143 8862 3143 8869
      3146 8880
TIME...MOT...LOC 2033Z 122DEG 4KT 3149 8863 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CGAL

1 follow-up statement

564 
WWUS54 KMOB 112055
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
355 PM CDT Wed Aug 11 2021

MSC153-112105-
/O.CAN.KMOB.SV.W.0184.000000T0000Z-210811T2115Z/
Wayne MS-
355 PM CDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WAYNE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

LAT...LON 3159 8867 3148 8857 3143 8862 3143 8869
      3146 8880
TIME...MOT...LOC 2051Z 122DEG 4KT 3150 8865 

$$

CGAL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 3:01 PM CDT	Special Weather Statement	MOB	Wayne	44 min
Aug 11, 3:15 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	23 min
Aug 11, 3:48 PM CDT	Special Weather Statement	MOB	Greene	42 min
Aug 11, 4:04 PM CDT	Special Weather Statement	MOB	Greene	41 min
Aug 11, 4:09 PM CDT	Severe Thunderstorm Warning	MOB	Greene	32 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.