Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 252, NWS Mobile, AL

August 12, 2008Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Aug 12, 2008, 5:05 PM CDT for Escambia County, Santa Rosa County, Florida. It was in force for 40 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
Aug 12, 2008, 5:05 PM CDT (22:05 UTC)
Expired
Aug 12, 2008, 5:45 PM CDT
In force
40 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 113 km from the middle of the area, began a volume at 22:08 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
Aug 12, 2:21 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.1 hours before the alert went out and 259 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, Birmingham, AL at 12:00Z on 2008-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 223 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, Birmingham, AL at 12:00Z on 2008-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
223 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
66 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.

000 
WUUS54 KMOB 122205
SVRMOB
FLC033-113-122245-
/O.NEW.KMOB.SV.W.0252.080812T2205Z-080812T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
505 PM CDT TUE AUG 12 2008

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  NORTHERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 545 PM CDT

* AT 459 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS OVER 60 MPH.  THESE STORMS WERE ALONG A LINE        
  EXTENDING FROM MCDAVID TO 10 MILES SOUTHWEST OF MCDAVID...MOVING   
  EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CENTURY AND FLOMATON BY 510 PM CDT...
  JAY AND CHUMUCKLA BY 520 PM CDT...
  DIXONVILLE AND BERRYDALE BY 530 PM CDT...
  MILTON NEAR WHITING FIELD AND ALLENTOWN BY 540 PM CDT...
  MUNSON AND MCLELLAN BY 545 PM CDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA UNTIL 1000 PM. 
IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY 
ON THE LOWEST FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR 
HALLWAY OR A ROOM SUCH AS A CLOSET OR BATHROOM.


LAT...LON 3100 8679 3080 8679 3071 8679 3075 8750
      3081 8741 3100 8744
TIME...MOT...LOC 2203Z 267DEG 31KT 3093 8731 3082 8730
          3077 8741

$$
2 follow-up statements
000 
WWUS54 KMOB 122232
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
532 PM CDT TUE AUG 12 2008

FLC033-122240-
/O.CAN.KMOB.SV.W.0252.000000T0000Z-080812T2245Z/
ESCAMBIA FL-
530 PM CDT TUE AUG 12 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ESCAMBIA COUNTY
IS CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED EAST INTO SANTA 
ROSA COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3076 8727 3083 8724 3099 8716 3100 8679
      3071 8679
TIME...MOT...LOC 2230Z 267DEG 31KT 3094 8704 3083 8703
          3078 8714

$$

FLC113-122245-
/O.CON.KMOB.SV.W.0252.000000T0000Z-080812T2245Z/
SANTA ROSA FL-
530 PM CDT TUE AUG 12 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHERN SANTA ROSA COUNTY...

AT 530 PM CDT...THE NATIONAL WEATHER SERVICE CONTINUED TO INDICATE A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
NEAR 60 MPH.  THESE STORMS WERE ALONG A LINE EXTENDING FROM 
BERRYDALE TO ALLENTOWN TO CHUMUCKLA...MOVING EAST AT 36 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MILTON NEAR WHITING FIELD AND ALLENTOWN BY 540 PM CDT...
  MUNSON AND MCLELLAN BY 545 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO 
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY ON THE LOWEST 
FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A 
ROOM SUCH AS A CLOSET OR BATHROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING 
FOR SOUTHWESTERN ALABAMA...PORTIONS OF THE WESTERN FLORIDA PANHANDLE 
AND SOUTHEAST MISSISSIPPI.

LAT...LON 3076 8727 3083 8724 3099 8716 3100 8679
      3071 8679
TIME...MOT...LOC 2230Z 267DEG 31KT 3094 8704 3083 8703
          3078 8714

$$
000 
WWUS54 KMOB 122243
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
543 PM CDT TUE AUG 12 2008

FLC113-122253-
/O.EXP.KMOB.SV.W.0252.000000T0000Z-080812T2245Z/
SANTA ROSA FL-
543 PM CDT TUE AUG 12 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SANTA ROSA COUNTY 
WILL BE ALLOWED TO EXPIRE AT 545 PM CDT...

THE LINE OF THUNDERSTORMS MOVING INTO NORTHEASTERN SANTA ROSA COUNTY 
HAVE WEAKENED BELOW SEVERE LIMITS. THE THUNDERSTORMS ARE STILL 
LIKELY PRODUCING STRONG WIND GUSTS AROUND 40 MPH AND LOCALLY HEAVY 
RAINS.  

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3076 8727 3083 8724 3099 8716 3100 8679
      3071 8679
TIME...MOT...LOC 2243Z 267DEG 31KT 3094 8691 3083 8690
          3078 8701

$$

Nearby

Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008

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.