Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 94, NWS Mobile, AL

June 6, 2012Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Jun 6, 2012, 6:33 PM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 24 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
Jun 6, 2012, 6:33 PM CDT (23:33 UTC)
Expired
Jun 6, 2012, 6:57 PM CDT
In force
24 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 91 km from the middle of the area, began a volume at 23:35 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, 11.6 hours before the alert went out and 247 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 2012-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 643 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 2012-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
643 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
799 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

494 
WUUS54 KMOB 062333
SVRMOB
FLC091-113-070015-
/O.NEW.KMOB.SV.W.0094.120606T2333Z-120607T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
633 PM CDT WED JUN 6 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  EAST CENTRAL SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 715 PM CDT

* AT 633 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 15 MILES
  NORTHWEST OF EGLIN AFB...OR 3 MILES EAST OF HAROLD...AND MOVING
  SOUTH AT 10 MPH.

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 35 AND 50.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS 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.

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

&&

LAT...LON 3044 8696 3045 8696 3045 8695 3046 8696
      3073 8690 3072 8666 3044 8665
TIME...MOT...LOC 2333Z 359DEG 8KT 3066 8679

$$
1 follow-up statement
849 
WWUS54 KMOB 062357 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
657 PM CDT WED JUN 6 2012

FLC091-113-070008-
/O.CAN.KMOB.SV.W.0094.000000T0000Z-120607T0015Z/
OKALOOSA FL-SANTA ROSA FL-
657 PM CDT WED JUN 6 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR EAST
CENTRAL SANTA ROSA AND WEST CENTRAL OKALOOSA COUNTIES...

AT 658 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR EAST CENTRAL
SANTA ROSA AND WEST CENTRAL OKALOOSA COUNTIES HAS WEAKENED TO BELOW
SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

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

LAT...LON 3044 8696 3045 8696 3045 8695 3046 8696
      3073 8690 3072 8666 3044 8665
TIME...MOT...LOC 2358Z 359DEG 8KT 3060 8679

$$

Nearby

Severe Thunderstorm Warnings in Florida, 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.