Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 367, NWS Tallahassee, FL

August 8, 2012Coffee County, Geneva County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 8, 2012, 3:55 PM CDT for Coffee County, Geneva County, Alabama. It was in force for 25 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 8, 2012, 3:55 PM CDT (20:55 UTC)
Expired
Aug 8, 2012, 4:20 PM CDT
In force
25 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Coffee County, AL, Geneva County, AL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.9 hours before the alert went out and 196 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 2012-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2519 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 2012-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
2519 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
48 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.

341 
WUUS52 KTAE 082055
SVRTAE
ALC031-061-082145-
/O.NEW.KTAE.SV.W.0367.120808T2055Z-120808T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
355 PM CDT WED AUG 8 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COFFEE COUNTY IN SOUTHEAST ALABAMA...
  NORTHWESTERN GENEVA COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 445 PM CDT

* AT 354 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR KINSTON...AND MOVING EAST AT 5   
  MPH. PENNY TO NICKEL SIZE HAIL IS ALSO POSSIBLE WITH THIS STORM.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LOWERY...WEEKS...INO...HOLLEY STORE...PERA...FAIRVIEW AND PINEY
  GROVE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT
AWAY FROM WINDOWS.

&&

LAT...LON 3126 8620 3129 8601 3111 8601 3114 8620
TIME...MOT...LOC 2055Z 277DEG 6KT 3120 8615

$$

08-LAMERS
1 follow-up statement
257 
WWUS52 KTAE 082120
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
420 PM CDT WED AUG 8 2012

ALC031-061-082129-
/O.CAN.KTAE.SV.W.0367.000000T0000Z-120808T2145Z/
COFFEE AL-GENEVA AL-
420 PM CDT WED AUG 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GENEVA AND
SOUTHWESTERN COFFEE COUNTIES IS CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED. THEREFORE 
THE WARNING HAS BEEN CANCELLED EARLY. HOWEVER...LIGHTNING AND GUSTY 
WINDS WILL STILL BE POSSIBLE IN NORTHWEST GENEVA COUNTY THROUGH 
5 PM CDT.

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT 
(8 5 0) 9 4 2 8 8 3 3. OR...CONTACT LAW ENFORCEMENT.

LAT...LON 3126 8620 3129 8601 3111 8601 3114 8620
TIME...MOT...LOC 2119Z 277DEG 6KT 3119 8610

$$

08-LAMERS

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 2:27 AM CDTDense Fog AdvisoryTAECoffee, Dale, Geneva, Henry, Houston5 hr
Aug 8, 12:48 PM CDTSpecial Weather StatementTAEHouston57 min
Aug 8, 1:42 PM CDTSpecial Weather StatementTAEHouston63 min
Aug 8, 1:52 PM CDTSevere Thunderstorm WarningTAEHouston23 min
Aug 8, 1:59 PM CDTAreal Flood AdvisoryTAEHouston2 hr
Aug 8, 2:05 PM CDTSpecial Weather StatementTAEGeneva15 min
Aug 8, 2:17 PM CDTSpecial Weather StatementTAEHouston43 min
Aug 8, 2:43 PM CDTAreal Flood AdvisoryTAEGeneva2 hr
Aug 8, 4:05 PM CDTAreal Flood AdvisoryTAECoffee, Geneva115 min

Nearby

Severe 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.