Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Mobile, AL

May 21, 2012Baldwin County, Alabama; Escambia County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at May 21, 2012, 6:56 PM CDT for Baldwin County, Alabama; Escambia County, Florida. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 21, 2012, 6:56 PM CDT (23:56 UTC)
Expired: May 21, 2012, 8:00 PM CDT
In force: 64 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 67 km from the middle of the area, began a volume at 23:56 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.

What was reported inside it

Time	Report	Where	Remark
May 21, 7:05 PM CDT	HAIL 1.75	2 E Foley, AL	2 MILES EAST OF INTERSECTION OF US 98 AND AL 59. THIS IS A RELAYED REPORT TO THE EMA BY CITIZEN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.9 hours before the alert went out and 199 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: 620 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 1402 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

384 
WUUS54 KMOB 212356
SVRMOB
ALC003-FLC033-220100-
/O.NEW.KMOB.SV.W.0065.120521T2356Z-120522T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
656 PM CDT MON MAY 21 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 800 PM CDT

* AT 654 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 7 MILES
  SOUTHEAST OF ROBERTSDALE...OR 2 MILES SOUTHEAST OF SUMMERDALE...AND
  MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PERDIDO BEACH...      ORANGE BEACH...       GULF SHORES...
  SUMMERDALE...         SILVERHILL...         ROBERTSDALE...
  MAGNOLIA SPRINGS...   LILLIAN...            FOLEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE FOR DESTRUCTIVE HAIL AND DAMAGING
WINDS. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY
FROM WINDOWS.

&&

LAT...LON 3026 8777 3029 8777 3032 8779 3056 8788
      3061 8759 3042 8741 3041 8741 3031 8733
TIME...MOT...LOC 2356Z 312DEG 16KT 3048 8766

$$

2 follow-up statements

032 
WWUS54 KMOB 220022
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
722 PM CDT MON MAY 21 2012

ALC003-FLC033-220100-
/O.CON.KMOB.SV.W.0065.000000T0000Z-120522T0100Z/
ESCAMBIA FL-BALDWIN AL-
722 PM CDT MON MAY 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES...

AT 718 PM CDT...A SEVERE THUNDERSTORM REPORTED TO BE PRODUCING GOLF BALL
SIZE HAIL WAS LOCATED 4 MILES EAST OF FOLEY...OR 6 MILES SOUTHWEST OF 
ELBERTA. WINDS OF UP TO 60 MPH ARE ALSO POSSIBLE. MOVEMENT IS TO THE 
SOUTHEAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  PERDIDO BEACH...      ORANGE BEACH...       GULF SHORES...
  MAGNOLIA SPRINGS...   LILLIAN...            FOLEY...
  ELBERTA...            BON SECOUR...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE FOR DESTRUCTIVE HAIL. PEOPLE
OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3026 8777 3029 8777 3032 8779 3042 8781
      3048 8755 3042 8741 3041 8741 3031 8733
TIME...MOT...LOC 0020Z 333DEG 19KT 3036 8763

$$

726 
WWUS54 KMOB 220053
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
753 PM CDT MON MAY 21 2012

ALC003-FLC033-220102-
/O.EXP.KMOB.SV.W.0065.000000T0000Z-120522T0100Z/
ESCAMBIA FL-BALDWIN AL-
753 PM CDT MON MAY 21 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR
SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES...

AT 751 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHEASTERN
BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES HAS MOVED OUT OF THE 
COUNTIES AND OUT OVER THE GULF OF MEXICO...THUS THE SEVERE 
THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 800 PM CDT.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

LAT...LON 3026 8777 3029 8777 3032 8779 3042 8781
      3048 8755 3042 8741 3041 8741 3031 8733
TIME...MOT...LOC 0052Z 333DEG 19KT 3021 8754

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 2:03 PM CDT	Special Marine Warning	MOB		87 min
May 21, 2:54 PM CDT	Severe Thunderstorm Warning	MOB	Monroe, Wilcox	51 min
May 21, 3:04 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	19 min
May 21, 3:08 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe	52 min
May 21, 3:11 PM CDT	Special Marine Warning	MOB		59 min
May 21, 3:36 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Clarke, Conecuh, Covington, Crenshaw, Monroe and 1 more	54 min
May 21, 4:26 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Escambia	64 min
May 21, 4:32 PM CDT	Special Marine Warning	MOB		88 min
May 21, 4:54 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia, Mobile	51 min
May 21, 5:48 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia, Mobile	57 min
May 21, 5:22 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	53 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Severe Thunderstorm Warnings in Florida, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.