Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 114, NWS Mobile, AL

May 3, 2021Butler County, Conecuh County, Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 3, 2021, 2:56 AM CDT for Butler County, Conecuh County, Covington County, Alabama. It was in force for 49 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
May 3, 2021, 2:56 AM CDT (07:56 UTC)
Expired
May 3, 2021, 3:45 AM CDT
In force
49 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Butler County, AL, Conecuh County, AL, Covington County, AL

The radar

The Eglin Afb radar (KEVX), 136 km from the middle of the area, began a volume at 07:57 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

Birmingham, AL (KBMX), launched 00:00Z, 7.9 hours before the alert went out and 194 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2021-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 83 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2021-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 265 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
83 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
265 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

292 
WUUS54 KMOB 030756
SVRMOB
ALC013-035-039-030845-
/O.NEW.KMOB.SV.W.0114.210503T0756Z-210503T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
256 AM CDT Mon May 3 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southwestern Butler County in south central Alabama...
  Eastern Conecuh County in south central Alabama...
  Northwestern Covington County in south central Alabama...

* Until 345 AM CDT.

* At 256 AM CDT, a severe thunderstorm was located near I65 And US
  84, or 6 miles southwest of Evergreen, moving northeast at 40 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.

* Locations impacted include...
  Evergreen, Georgiana, McKenzie, Castleberry and I65 And US 84. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 3127 8704 3141 8718 3179 8680 3146 8651
TIME...MOT...LOC 0756Z 240DEG 34KT 3138 8704 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
071 
WWUS54 KMOB 030821
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
321 AM CDT Mon May 3 2021

ALC013-035-039-030845-
/O.CON.KMOB.SV.W.0114.000000T0000Z-210503T0845Z/
Butler AL-Conecuh AL-Covington AL-
321 AM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR SOUTHWESTERN BUTLER...NORTHEASTERN CONECUH AND NORTHWESTERN
COVINGTON COUNTIES...

At 320 AM CDT, a severe thunderstorm was located 7 miles northeast of
Evergreen, moving northeast 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.

Locations impacted include...
Evergreen, Georgiana and McKenzie. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 3134 8691 3150 8705 3179 8680 3146 8651
TIME...MOT...LOC 0820Z 236DEG 51KT 3150 8685 

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

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 12:19 AM CDTSpecial Marine WarningMOB56 min
May 3, 1:50 AM CDTSpecial Weather StatementMOBEscambia40 min
May 3, 2:24 AM CDTSpecial Weather StatementMOBButler, Conecuh66 min
May 3, 1:50 PM CDTSpecial Weather StatementMOBCovington25 min
May 3, 1:57 PM CDTTornado WarningMOBCovington, Crenshaw48 min
May 3, 3:22 PM CDTAreal Flood AdvisoryMOBConecuh, Covington, Crenshaw113 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021Every 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.