Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Mobile, AL

May 2, 2021Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 2, 2021, 3:44 PM CDT for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 33 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 2, 2021, 3:44 PM CDT (20:44 UTC)
Expired
May 2, 2021, 4:17 PM CDT
In force
33 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 20:47 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, 8.7 hours before the alert went out and 206 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, Jackson, MS at 12:00Z on 2021-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 12:00Z on 2021-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1640 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

885 
WUUS54 KMOB 022044
SVRMOB
ALC023-025-129-022130-
/O.NEW.KMOB.SV.W.0113.210502T2044Z-210502T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
344 PM CDT Sun May 2 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southeastern Choctaw County in southwestern Alabama...
  Northeastern Washington County in southwestern Alabama...
  West central Clarke County in southwestern Alabama...

* Until 430 PM CDT.

* At 343 PM CDT, a severe thunderstorm was located near Chatom,
  moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Saint Stephens and Coffeeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3168 8790 3138 8813 3143 8826 3181 8818
TIME...MOT...LOC 2043Z 204DEG 25KT 3146 8819 

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

CGAL
3 follow-up statements
966 
WWUS54 KMOB 022057
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
357 PM CDT Sun May 2 2021

ALC023-025-129-022130-
/O.CON.KMOB.SV.W.0113.000000T0000Z-210502T2130Z/
Choctaw AL-Washington AL-Clarke AL-
357 PM CDT Sun May 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR SOUTHEASTERN CHOCTAW...NORTHEASTERN WASHINGTON AND WEST CENTRAL
CLARKE COUNTIES...

At 357 PM CDT, a severe thunderstorm was located 5 miles west of
Saint Stephens, or 8 miles northeast of Chatom, moving northeast at
30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Saint Stephens and Coffeeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3148 8805 3155 8824 3181 8818 3168 8790
TIME...MOT...LOC 2057Z 204DEG 25KT 3155 8814 

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

CGAL
756 
WWUS54 KMOB 022110
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
410 PM CDT Sun May 2 2021

ALC023-022119-
/O.CAN.KMOB.SV.W.0113.000000T0000Z-210502T2130Z/
Choctaw AL-
410 PM CDT Sun May 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CHOCTAW COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning is moving east of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3168 8790 3156 8808 3159 8817 3170 8813
      3170 8809 3174 8809 3176 8811 3177 8810
TIME...MOT...LOC 2109Z 205DEG 27KT 3164 8808 

$$

ALC025-129-022130-
/O.CON.KMOB.SV.W.0113.000000T0000Z-210502T2130Z/
Washington AL-Clarke AL-
410 PM CDT Sun May 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTH CENTRAL WASHINGTON AND WEST CENTRAL CLARKE COUNTIES...

At 409 PM CDT, a severe thunderstorm was located 7 miles north of
Saint Stephens, or 14 miles northwest of Jackson, moving northeast at
30 mph.

HAZARD...60 mph wind gusts, possible brief tornado.

SOURCE...Radar indicated.

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

Locations impacted include...
Coffeeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3168 8790 3156 8808 3159 8817 3170 8813
      3170 8809 3174 8809 3176 8811 3177 8810
TIME...MOT...LOC 2109Z 205DEG 27KT 3164 8808 

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

JLH
048 
WWUS54 KMOB 022117
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
417 PM CDT Sun May 2 2021

ALC025-129-022126-
/O.CAN.KMOB.SV.W.0113.000000T0000Z-210502T2130Z/
Washington AL-Clarke AL-
417 PM CDT Sun May 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WASHINGTON AND
WEST CENTRAL CLARKE COUNTIES 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 3168 8790 3156 8808 3159 8817 3170 8813
      3170 8809 3174 8809 3176 8811 3177 8810
TIME...MOT...LOC 2116Z 204DEG 25KT 3169 8805 

$$

JLH

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 4:05 AM CDTSmall Craft AdvisoryMOB30 hr
May 2, 2:43 PM CDTSpecial Marine WarningMOB92 min
May 2, 3:34 PM CDTSpecial Marine WarningMOB56 min
May 2, 4:04 PM CDTSpecial Weather StatementMOBClarke41 min
May 2, 4:21 PM CDTTornado WarningMOBClarke, Monroe, Wilcox39 min
May 2, 4:27 PM CDTSpecial Marine WarningMOB2 hr
May 2, 5:31 PM CDTSpecial Marine WarningMOB26 min
May 2, 6:05 PM CDTSpecial Marine WarningMOB49 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.