Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 66, NWS Mobile, AL

May 23, 2012Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 23, 2012, 12:59 AM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 15 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 23, 2012, 12:59 AM CDT (05:59 UTC)
Expired
May 23, 2012, 1:14 AM CDT
In force
15 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 68 km from the middle of the area, began a volume at 06:02 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 00:00Z, 6.0 hours before the alert went out and 195 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, Slidell Radar S, LA at 00:00Z on 2012-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1409 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, Slidell Radar S, LA at 00:00Z on 2012-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
1409 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1351 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

006 
WUUS54 KMOB 230559
SVRMOB
ALC003-FLC033-230700-
/O.NEW.KMOB.SV.W.0066.120523T0559Z-120523T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1259 AM CDT WED MAY 23 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 200 AM CDT

* AT 1258 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 6 MILES
  NORTHWEST OF GULF SHORES...OR 3 MILES WEST OF BON SECOUR...AND
  MOVING EAST AT 15 MPH.

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

LAT...LON 3023 8788 3024 8788 3026 8782 3026 8780
      3028 8777 3030 8777 3039 8788 3052 8739
      3045 8737 3043 8739 3042 8737 3031 8734
      3024 8767 3022 8780
TIME...MOT...LOC 0600Z 263DEG 15KT 3031 8778

$$
1 follow-up statement
679 
WWUS54 KMOB 230614
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
114 AM CDT WED MAY 23 2012

ALC003-FLC033-230624-
/O.CAN.KMOB.SV.W.0066.000000T0000Z-120523T0700Z/
ESCAMBIA FL-BALDWIN AL-
114 AM CDT WED MAY 23 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES...

AT 112 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHEASTERN
BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES HAS WEAKENED TO BELOW
SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 3023 8788 3024 8788 3026 8782 3026 8780
      3028 8777 3030 8777 3039 8788 3052 8739
      3045 8737 3043 8739 3042 8737 3031 8734
      3024 8767 3022 8780
TIME...MOT...LOC 0614Z 258DEG 18KT 3033 8770

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 3:51 PM CDTSevere Thunderstorm WarningMOBEscambia24 min
May 23, 12:22 AM CDTSpecial Marine WarningMOB2 hr
May 23, 2:20 AM CDTSpecial Marine WarningMOB55 min
May 23, 3:51 AM CDTSpecial Marine WarningMOB84 min
May 23, 5:39 AM CDTSpecial Marine WarningMOB96 min
May 23, 3:54 PM CDTSpecial Marine WarningMOB51 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Severe Thunderstorm Warnings in Alabama, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.