Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 69, NWS Mobile, AL

May 26, 2011Covington County, Crenshaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 26, 2011, 1:34 PM CDT for Covington County, Crenshaw County, Alabama. It was in force for 26 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 26, 2011, 1:34 PM CDT (18:34 UTC)
Expired: May 26, 2011, 2:00 PM CDT
In force: 26 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Covington County, AL, Crenshaw County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.6 hours before the alert went out and 192 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: 2103 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

638 
WUUS54 KMOB 261834
SVRMOB
ALC039-041-261915-
/O.NEW.KMOB.SV.W.0069.110526T1834Z-110526T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
134 PM CDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF ANDALUSIA...
  SOUTHERN CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 215 PM CDT

* AT 132 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES NORTH OF ANDALUSIA...OR NEAR GANTT...AND MOVING NORTHEAST AT
  35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DOZIER AROUND 145 PM CDT...
  BRANTLEY AROUND 200 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3153 8616 3153 8619 3131 8619 3128 8652
      3153 8663 3153 8650 3158 8650 3159 8614
      3155 8614
TIME...MOT...LOC 1834Z 228DEG 29KT 3148 8647

$$

PURDY

1 follow-up statement

762 
WWUS54 KMOB 261900
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
200 PM CDT THU MAY 26 2011

ALC039-041-261910-
/O.CAN.KMOB.SV.W.0069.000000T0000Z-110526T1915Z/
COVINGTON AL-CRENSHAW AL-
200 PM CDT THU MAY 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CRENSHAW AND
NORTHEASTERN COVINGTON COUNTIES IS CANCELLED...

LAT...LON 3153 8616 3153 8619 3131 8619 3128 8652
      3153 8663 3153 8650 3158 8650 3159 8614
      3155 8614
TIME...MOT...LOC 1900Z 228DEG 29KT 3162 8629

$$

PURDY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:25 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	50 min
May 26, 12:14 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke	33 min
May 26, 12:22 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	27 min
May 26, 12:43 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Washington	47 min
May 26, 12:45 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	45 min
May 26, 1:04 PM CDT	Severe Thunderstorm Warning	MOB	Butler	41 min
May 26, 1:24 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile, Washington	37 min
May 26, 1:27 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	63 min
May 26, 1:29 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	46 min
May 26, 2:43 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	62 min
May 26, 2:44 PM CDT	Flash Flood Warning	MOB	Choctaw, Washington	3 hr
May 26, 3:20 PM CDT	Tornado Warning	MOB	Mobile	40 min
May 26, 3:31 PM CDT	Special Marine Warning	MOB		59 min
May 26, 3:39 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	20 min
May 26, 4:23 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	37 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning in 2011

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.