Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS Tallahassee, FL

February 24, 2012Thomas County, Georgia; Jefferson County, Leon County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 24, 2012, 2:16 PM EST for Thomas County, Georgia; Jefferson County, Leon County, Florida. It was in force for 29 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
Feb 24, 2012, 2:16 PM EST (19:16 UTC)
Expired
Feb 24, 2012, 2:45 PM EST
In force
29 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Jefferson County, FL, Leon County, FL, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 45 km from the middle of the area, began a volume at 19:18 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.

What was reported inside it

TimeReportWhereRemark
Feb 24, 2:22 PM ESTTSTM WND DMG1 Ssw Moccasin Gap, FLTREE DOWN MAKING ROAD IMPASSABLE AT CENTERVILLE ROAD NEAR CHEMONIE CROSSING.
Feb 24, 2:22 PM ESTTSTM WND DMG4 N Miccosukee, FLTRE DOWN ON VETERANS MEMORIAL DRIVE ABOUT 2 MILES SOUTH OF THE FLORIDA/GEORGIA STATE LINE BLOCKING 1 LANE OF TRAFFIC

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

The watch it was issued in

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

IssuedProductOfficeLasted
Feb 24, 12:04 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.3 hours before the alert went out and 43 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 2012-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1115 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 2012-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
1115 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
529 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
243 m²/s²
Significant tornado parameter
1.3
Supercell composite
5.6

Open this sounding in Storm Lab

The text

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

263 
WUUS52 KTAE 241916
SVRTAE
FLC065-073-GAC275-241945-
/O.NEW.KTAE.SV.W.0041.120224T1916Z-120224T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
216 PM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JEFFERSON COUNTY IN FLORIDA...
  NORTHEASTERN LEON COUNTY IN FLORIDA...
  EXTREME SOUTH CENTRAL THOMAS COUNTY IN SOUTH CENTRAL GEORGIA...

* UNTIL 245 PM EST

* AT 213 PM EST...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED 17 MILES WEST OF MONTICELLO...OR NEAR
  MOCCASIN GAP...AND MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CONCORD...MICCOSUKEE...LAKE MICCOSUKEE...FESTUS...FINCHER...
  JARROTT...ALMA...MONTIVILLA AND DILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.

&&

LAT...LON 3067 8378 3052 8374 3053 8420 3068 8415
TIME...MOT...LOC 1917Z 262DEG 43KT 3059 8410

$$
2 follow-up statements
843 
WWUS52 KTAE 241931
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
231 PM EST FRI FEB 24 2012

FLC065-073-GAC275-241945-
/O.CON.KTAE.SV.W.0041.000000T0000Z-120224T1945Z/
THOMAS GA-LEON FL-JEFFERSON FL-
231 PM EST FRI FEB 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EST
FOR NORTHERN JEFFERSON...NORTHEASTERN LEON AND EXTREME SOUTH CENTRAL
THOMAS COUNTIES...

AT 227 PM EST...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 MICCOSUKEE...MOVING 
EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MONTIVILLA...MONTICELLO AND DILLS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST FRIDAY EVENING FOR
SOUTHEAST ALABAMA AND CENTRAL FLORIDA AND SOUTHWESTERN GEORGIA.

&&

LAT...LON 3053 8414 3067 8403 3067 8378 3052 8374
TIME...MOT...LOC 1930Z 262DEG 43KT 3061 8392

$$
701 
WWUS52 KTAE 241942
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
242 PM EST FRI FEB 24 2012

FLC065-073-GAC275-241952-
/O.EXP.KTAE.SV.W.0041.000000T0000Z-120224T1945Z/
THOMAS GA-LEON FL-JEFFERSON FL-
242 PM EST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JEFFERSON...
NORTHEASTERN LEON AND EXTREME SOUTHEASTERN THOMAS COUNTIES WILL
EXPIRE AT 245 PM EST...

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN 
TALLAHASSEE OR...YOU MAY CONTACT THE NEAREST LAW ENFORCEMENT AGENCY 
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO 
THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST FRIDAY EVENING FOR
SOUTHEAST ALABAMA AND CENTRAL FLORIDA AND SOUTHWESTERN GEORGIA.

LAT...LON 3053 8414 3067 8403 3067 8378 3052 8374
TIME...MOT...LOC 1942Z 262DEG 43KT 3063 8375

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 5:59 AM ESTFire Weather WatchTAEBaker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 20 more14 hr
Feb 24, 11:45 AM ESTSevere Thunderstorm WarningTAEEarly, Miller, Seminole30 min
Feb 24, 12:07 PM ESTSevere Thunderstorm WarningTAEBaker, Decatur, Grady, Miller, Mitchell, Seminole38 min
Feb 24, 12:41 PM ESTSevere Thunderstorm WarningTAEBaker, Decatur, Grady, Mitchell34 min
Feb 24, 12:57 PM ESTTornado WarningTAEColquitt, Mitchell33 min
Feb 24, 1:11 PM ESTSevere Thunderstorm WarningTAEColquitt, Cook, Mitchell, Tift, Worth49 min
Feb 24, 1:28 PM ESTTornado WarningTAEColquitt, Cook32 min
Feb 24, 1:40 PM ESTSevere Thunderstorm WarningTAEColquitt, Mitchell50 min
Feb 24, 1:45 PM ESTTornado WarningTAEBerrien, Colquitt, Cook, Tift17 min
Feb 24, 1:58 PM ESTSevere Thunderstorm WarningTAEDecatur, Grady, Mitchell, Thomas30 min
Feb 24, 2:02 PM ESTSevere Thunderstorm WarningTAEColquitt, Cook, Tift, Worth28 min
Feb 24, 2:21 PM ESTSevere Thunderstorm WarningTAEBerrien, Colquitt, Cook, Irwin, Tift39 min
Feb 24, 3:49 PM ESTSevere Thunderstorm WarningTAELanier, Lowndes26 min
Feb 24, 3:58 AM ESTRip Current StatementTAEBay, Gulf, Walton15 hr
Feb 24, 4:48 AM ESTSmall Craft AdvisoryTAE62 hr
Feb 24, 12:21 PM ESTSevere Thunderstorm WarningTAEBay, Walton, Washington39 min
Feb 24, 12:28 PM ESTSpecial Marine WarningTAE105 min
Feb 24, 12:59 PM ESTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson, Washington31 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Severe Thunderstorm Warnings in Georgia, 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; radar from the NEXRAD Level II archive.