Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 145, NWS Mobile, AL

July 25, 2012Escambia County, Alabama; Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Jul 25, 2012, 5:26 PM CDT for Escambia County, Alabama; Okaloosa County, Santa Rosa County, Florida. It was in force for 38 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
Jul 25, 2012, 5:26 PM CDT (22:26 UTC)
Expired
Jul 25, 2012, 6:04 PM CDT
In force
38 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Escambia County, AL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 92 km from the middle of the area, began a volume at 22:26 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.4 hours before the alert went out and 243 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, Tallahassee Rgnl, FL at 12:00Z on 2012-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2761 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, Tallahassee Rgnl, FL at 12:00Z on 2012-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
2761 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
40 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.

909 
WUUS54 KMOB 252226
SVRMOB
ALC053-FLC091-113-252330-
/O.NEW.KMOB.SV.W.0145.120725T2226Z-120725T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
526 PM CDT WED JUL 25 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  NORTHEASTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHEASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 630 PM CDT

* AT 524 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 17 MILES SOUTHEAST OF EAST BREWTON...
  OR 14 MILES SOUTH OF US 29 AND CR 43...AND MOVING NORTHWEST AT 5
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  PARKER SPRINGS...
  ROCK CREEK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3086 8674 3097 8701 3117 8682 3102 8670
      3101 8670 3100 8668 3096 8665
TIME...MOT...LOC 2225Z 118DEG 3KT 3096 8682

$$
1 follow-up statement
076 
WWUS54 KMOB 252304
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
604 PM CDT WED JUL 25 2012

ALC053-FLC091-113-252314-
/O.CAN.KMOB.SV.W.0145.000000T0000Z-120725T2330Z/
ESCAMBIA AL-OKALOOSA FL-SANTA ROSA FL-
604 PM CDT WED JUL 25 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
NORTHEASTERN SANTA ROSA...NORTHWESTERN OKALOOSA AND SOUTHEASTERN
ESCAMBIA COUNTIES...

AT 604 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
SANTA ROSA...NORTHWESTERN OKALOOSA AND SOUTHEASTERN ESCAMBIA COUNTIES
HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM
WARNING HAS BEEN CANCELLED.

LAT...LON 3086 8674 3097 8701 3117 8682 3102 8670
      3101 8670 3100 8668 3096 8665
TIME...MOT...LOC 2304Z 118DEG 3KT 3098 8685

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 2:15 PM CDTSpecial Marine WarningMOB90 min
Jul 25, 2:48 PM CDTAreal Flood AdvisoryMOBBaldwin57 min
Jul 25, 3:20 PM CDTSevere Thunderstorm WarningMOBBaldwin40 min
Jul 25, 3:53 PM CDTAreal Flood AdvisoryMOBBaldwin52 min
Jul 25, 4:50 PM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa55 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.