Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 101, NWS Mobile, AL

December 20, 2012Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Dec 20, 2012, 8:41 AM CST for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 64 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
Dec 20, 2012, 8:41 AM CST (14:41 UTC)
Expired
Dec 20, 2012, 9:45 AM CST
In force
64 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

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

The radar

The Eglin Afb radar (KEVX), 104 km from the middle of the area, began a volume at 14:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 20, 4:23 AM CSTTornado WatchSPC9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.7 hours before the alert went out and 258 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 2012-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2063 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
202 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.

813 
WFUS54 KMOB 201441
TORMOB
FLC033-091-113-201545-
/O.NEW.KMOB.TO.W.0101.121220T1441Z-121220T1545Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
841 AM CST THU DEC 20 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  WEST CENTRAL OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 945 AM CST

* AT 837 AM CST...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND
  LIKELY PRODUCING A TORNADO WAS LOCATED 13 MILES SOUTH OF
  WARRINGTON...OR 13 MILES SOUTHEAST OF PERDIDO BEACH...MOVING
  NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PENSACOLA INTERNATIONAL AIRPORT...          MIDWAY...
  WOODLAWN BEACH...     WHITING FIELD...      TIGER POINT...
  ROEVILLE...           POINT BAKER...        PEA RIDGE...
  MULAT...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 12 AND 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3081 8701 3059 8660 3039 8688 3037 8709
      3035 8714 3039 8689 3036 8692 3032 8717
      3031 8727 3032 8731 3030 8740
TIME...MOT...LOC 1441Z 221DEG 42KT 3025 8732

$$
2 follow-up statements
457 
WWUS54 KMOB 201506
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
906 AM CST THU DEC 20 2012

FLC033-091-113-201545-
/O.CON.KMOB.TO.W.0101.000000T0000Z-121220T1545Z/
OKALOOSA FL-SANTA ROSA FL-ESCAMBIA FL-
906 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CST FOR
SOUTHEASTERN ESCAMBIA...SOUTHERN SANTA ROSA AND WEST CENTRAL OKALOOSA
COUNTIES...

AT 900 AM CST...A SEVERE THUNDERSTORM WITH STRONG ROTATION AND LIKELY
PRODUCING A TORNADO  WAS LOCATED NEAR GULF BREEZE...OR 5 MILES WEST
OF ORIOLE BEACH...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  PENSACOLA INTERNATIONAL AIRPORT...          MIDWAY...
  WOODLAWN BEACH...     WHITING FIELD...      TIGER POINT...
  ROEVILLE...           POINT BAKER...        PEA RIDGE...
  MULAT...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 12 AND 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3081 8701 3059 8660 3039 8688 3037 8709
      3035 8714 3039 8689 3036 8692 3032 8717
      3031 8727 3032 8731 3030 8740
TIME...MOT...LOC 1506Z 224DEG 41KT 3041 8711

$$
439 
WWUS54 KMOB 201519
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
919 AM CST THU DEC 20 2012

FLC033-091-113-201545-
/O.CON.KMOB.TO.W.0101.000000T0000Z-121220T1545Z/
OKALOOSA FL-SANTA ROSA FL-ESCAMBIA FL-
919 AM CST THU DEC 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CST FOR
SOUTHEASTERN ESCAMBIA...SOUTHERN SANTA ROSA AND WEST CENTRAL OKALOOSA
COUNTIES...

AT 914 AM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED 9 MILES EAST OF PENSACOLA INTERNATIONAL AIRPORT...OR 5
MILES NORTHWEST OF MIDWAY...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  PENSACOLA INTERNATIONAL AIRPORT...          MIDWAY...
  WOODLAWN BEACH...     WHITING FIELD...      TIGER POINT...
  ROEVILLE...           POINT BAKER...        PEA RIDGE...
  MULAT...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 12 AND 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3081 8701 3059 8660 3039 8688 3037 8709
      3035 8714 3039 8689 3036 8692 3032 8717
      3031 8727 3032 8731 3030 8740
TIME...MOT...LOC 1518Z 228DEG 40KT 3049 8700

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 20, 7:52 AM CSTTornado WarningMOBEscambia53 min
Dec 20, 8:27 AM CSTTornado WarningMOBEscambia, Okaloosa, Santa Rosa63 min
Dec 20, 8:29 AM CSTTornado WarningMOBOkaloosa, Santa Rosa46 min
Dec 20, 9:00 AM CSTTornado WarningMOBEscambia, Santa Rosa60 min
Dec 20, 9:11 AM CSTTornado WarningMOBOkaloosa, Santa Rosa25 min
Dec 20, 9:25 AM CSTTornado WarningMOBOkaloosa55 min
Dec 20, 9:43 AM CSTTornado WarningMOBOkaloosa, Santa Rosa62 min
Dec 20, 10:19 AM CSTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa3 hr
Dec 20, 2:19 PM CSTRed Flag WarningMOB27 hr

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes 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.