Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 252, NWS Tallahassee, FL

July 10, 2012Gadsden County, Jackson County, Liberty County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 10, 2012, 3:02 PM EDT for Gadsden County, Jackson County, Liberty County, Florida. It was in force for 32 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
Jul 10, 2012, 3:02 PM EDT (19:02 UTC)
Expired
Jul 10, 2012, 3:34 PM EDT
In force
32 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Gadsden County, FL, Jackson County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 55 km from the middle of the area, began a volume at 19:04 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 nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.0 hours before the alert went out and 58 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 2012-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2124 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 2012-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
2124 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
-10 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.

388 
WUUS52 KTAE 101902
SVRTAE
FLC039-063-077-101945-
/O.NEW.KTAE.SV.W.0252.120710T1902Z-120710T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
302 PM EDT TUE JUL 10 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL GADSDEN COUNTY IN FLORIDA...
  NORTH CENTRAL LIBERTY COUNTY IN FLORIDA...
  EXTREME SOUTHEASTERN JACKSON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 345 PM EDT/245 PM CDT/

* AT 259 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR ROCK BLUFF...AND MOVING NORTH AT
  10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROY
  AND SYCAMORE

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 3062 8492 3057 8475 3034 8488 3038 8499
TIME...MOT...LOC 1902Z 200DEG 11KT 3049 8489

$$

44-LERICOS
2 follow-up statements
591 
WWUS52 KTAE 101917
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
317 PM EDT TUE JUL 10 2012

FLC039-063-077-101945-
/O.CON.KTAE.SV.W.0252.000000T0000Z-120710T1945Z/
JACKSON FL-LIBERTY FL-GADSDEN FL-
317 PM EDT TUE JUL 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM
EDT/245 PM CDT/ FOR WEST CENTRAL GADSDEN...NORTH CENTRAL LIBERTY AND
EXTREME SOUTHEASTERN JACKSON COUNTIES...

AT 313 PM EDT...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 ROCK BLUFF...MOVING
NORTH AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROY AND
SYCAMORE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3043 8483 3043 8498 3062 8492 3057 8475
TIME...MOT...LOC 1917Z 200DEG 11KT 3053 8487

$$

44-LERICOS
093 
WWUS52 KTAE 101934
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
334 PM EDT TUE JUL 10 2012

FLC039-063-077-101944-
/O.CAN.KTAE.SV.W.0252.000000T0000Z-120710T1945Z/
JACKSON FL-LIBERTY FL-GADSDEN FL-
334 PM EDT TUE JUL 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL GADSDEN...NORTH
CENTRAL LIBERTY AND EXTREME SOUTHEASTERN JACKSON COUNTIES IS
CANCELLED...

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN 
TALLAHASSEE AT (850) 942 8833. OR...YOU MAY CONTACT THE NEAREST LAW 
ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL 
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3043 8483 3043 8498 3062 8492 3057 8475
TIME...MOT...LOC 1934Z 200DEG 11KT 3058 8485

$$

44-LERICOS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 6:34 PM EDTSpecial Marine WarningTAE56 min
Jul 10, 7:29 PM EDTSpecial Marine WarningTAE49 min

Nearby

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