Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 45, NWS Tallahassee, FL

March 1, 2012Houston County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 1, 2012, 1:40 PM CST for Houston County, Alabama. It was in force for 35 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 1, 2012, 1:40 PM CST (19:40 UTC)
Expired
Mar 1, 2012, 2:15 PM CST
In force
35 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Houston County, AL

What was reported inside it

TimeReportWhereRemark
Mar 1, 1:45 PM CSTTSTM WND DMGCottonwood, ALROOF BLOWN OFF MOBILE HOME IN COTTONWOOD AL., AND A SIGN BLOWN DOWN.
Mar 1, 1:50 PM CSTTSTM WND DMG4 S Lovetown, ALA FEW TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.7 hours before the alert went out and 113 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 2012-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 240 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 2012-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 170 square meters per square second.1939587897Sfc1 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
240 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
499 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
170 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

053 
WUUS52 KTAE 011940
SVRTAE
ALC069-012015-
/O.NEW.KTAE.SV.W.0045.120301T1940Z-120301T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
140 PM CST THU MAR 1 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HOUSTON COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 215 PM CST

* AT 137 PM CST...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR COTTONWOOD...OR NEAR
  HODGESVILLE...AND MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ASHFORD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING.
PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM
WINDOWS.

&&

LAT...LON 3120 8511 3117 8510 3114 8506 3109 8503
      3102 8500 3100 8500 3100 8545 3118 8545
TIME...MOT...LOC 1940Z 270DEG 32KT 3109 8534

$$

42-DVD
2 follow-up statements
419 
WWUS52 KTAE 011950
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
150 PM CST THU MAR 1 2012

ALC069-012015-
/O.CON.KTAE.SV.W.0045.000000T0000Z-120301T2015Z/
HOUSTON AL-
150 PM CST THU MAR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CST
FOR SOUTHEASTERN HOUSTON COUNTY...

AT 146 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR LOVETOWN...MOVING EAST
AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GRANGEBURG...PANSEY...HARMON...GORDON...CROSBY...LUCY AND
CHATTAHOOCHEE SP

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3116 8510 3114 8506 3109 8503 3102 8500
      3100 8500 3101 8533 3118 8537 3119 8519
      3119 8512
TIME...MOT...LOC 1951Z 270DEG 32KT 3110 8524

$$

42-DVD
642 
WWUS52 KTAE 012001
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
201 PM CST THU MAR 1 2012

ALC069-012015-
/O.CON.KTAE.SV.W.0045.000000T0000Z-120301T2015Z/
HOUSTON AL-
201 PM CST THU MAR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CST
FOR SOUTHEASTERN HOUSTON COUNTY...

AT 156 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR HARMON...MOVING EAST
AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GORDON...CROSBY AND LUCY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3118 8517 3117 8512 3114 8506 3112 8506
      3109 8503 3103 8500 3100 8500 3104 8524
      3118 8530 3119 8517
TIME...MOT...LOC 2001Z 270DEG 32KT 3111 8516

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 1, 11:44 AM CSTSpecial Weather StatementTAEGeneva46 min
Mar 1, 11:57 AM CSTSevere Thunderstorm WarningTAEGeneva48 min
Mar 1, 1:11 PM CSTTornado WarningTAEGeneva, Houston34 min
Mar 1, 3:06 PM CSTSevere Thunderstorm WarningTAECoffee, Dale, Henry, Houston39 min
Mar 1, 3:41 PM CSTSevere Thunderstorm WarningTAEHouston49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.