Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 71, NWS Mobile, AL

May 26, 2011Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 26, 2011, 2:43 PM CDT for Mobile County, Alabama. It was in force for 62 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, 2:43 PM CDT (19:43 UTC)
Expired: May 26, 2011, 3:45 PM CDT
In force: 62 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Mobile County, AL

The radar

The Mobile radar (KMOB), 27 km from the middle of the area, began a volume at 19:42 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, 7.7 hours before the alert went out and 142 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: 3259 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 464 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 12.8

Open this sounding in Storm Lab

The text

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

493 
WUUS54 KMOB 261943
SVRMOB
ALC097-262045-
/O.NEW.KMOB.SV.W.0071.110526T1943Z-110526T2045Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITIES OF...TILLMANS CORNER...THEODORE...GRAND
  BAY...DOWNTOWN MOBILE...BAYOU LA BATRE...

* UNTIL 345 PM CDT

* AT 242 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
  ESCATAWPA...OR 7 MILES NORTHEAST OF GAUTIER...AND MOVING EAST AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRAND BAY AROUND 315 PM CDT...
  HUTCHENS ELEMENTARY AROUND 335 PM CDT...
  SCHILLINGER AND THREE NOTCH AROUND 340 PM CDT...
  MOBILE GREYHOUND PARK...THEODORE...TILLMANS CORNER AND KNOLLWOOD
  HOSPITAL AROUND 345 PM CDT...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 1 AND 29.

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 1 AND 6.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3032 8821 3035 8828 3037 8827 3034 8824
      3036 8819 3038 8825 3037 8830 3039 8836
      3038 8839 3036 8837 3035 8839 3040 8841
      3065 8841 3074 8801 3067 8800 3065 8805
      3058 8808 3032 8812
TIME...MOT...LOC 1942Z 255DEG 17KT 3048 8854

$$

PURDY

2 follow-up statements

120 
WWUS54 KMOB 262013
SVSMOB

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

ALC097-262045-
/O.CON.KMOB.SV.W.0071.000000T0000Z-110526T2045Z/
MOBILE AL-
313 PM CDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR SOUTHWESTERN MOBILE COUNTY...

AT 312 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS
LOCATED 10 MILES WEST OF CLOVERDALE...OR NEAR ESCATAWPA...MOVING EAST
AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLOVERDALE BY 335 PM CDT...
  GRAND BAY...FERNLAND...DEES AND SAINT ELMO BY 345 PM CDT...

LAT...LON 3035 8827 3038 8825 3037 8830 3039 8836
      3038 8839 3036 8837 3035 8839 3040 8841
      3065 8842 3069 8824 3034 8821 3037 8824
      3036 8825 3034 8825
TIME...MOT...LOC 2012Z 268DEG 16KT 3049 8852

$$

PURDY

004 
WWUS54 KMOB 262035
SVSMOB

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

ALC097-262045-
/O.CON.KMOB.SV.W.0071.000000T0000Z-110526T2045Z/
MOBILE AL-
335 PM CDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR SOUTHWESTERN MOBILE COUNTY...

AT 334 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR CLOVERDALE...OR NEAR GRAND BAY...MOVING 
EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLOVERDALE BY 340 PM CDT...
  GRAND BAY...FERNLAND...DEES AND 6 MILES WEST OF SAINT ELMO BY 345
  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 3035 8827 3038 8825 3037 8830 3039 8836
      3038 8839 3036 8837 3035 8839 3040 8841
      3059 8842 3063 8823 3034 8821 3037 8824
      3036 8825 3034 8825
TIME...MOT...LOC 2034Z 268DEG 16KT 3049 8841

$$

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, 1:34 PM CDT	Severe Thunderstorm Warning	MOB	Covington, Crenshaw	26 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; radar from the NEXRAD Level II archive.