Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 113, NWS Tallahassee, FL

July 15, 2004Walton County, Florida; Geneva County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 15, 2004, 8:34 PM CDT for Walton County, Florida; Geneva County, Alabama. It was in force for 26 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 15, 2004, 8:34 PM CDT (01:34 UTC)
Expired
Jul 15, 2004, 9:00 PM CDT
In force
26 min
Issued by
NWS Tallahassee, FL
Area
Counties, with a storm outline in the text

Counties Geneva County, AL, Walton County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 1.6 hours before the alert went out and 185 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 00:00Z on 2004-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 848 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 00:00Z on 2004-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939Sfc1 km3 km6 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
848 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KTAE 160134
SVRTLH
ALC061-FLC131-160200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
834 PM CDT THU JUL 15 2004

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL WALTON COUNTY IN THE PANHANDLE OF FLORIDA
  SOUTHWESTERN GENEVA COUNTY IN SOUTHEAST ALABAMA

* UNTIL 900 PM CDT

* AT 834 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL ABOUT 12 MILES WEST OF GENEVA...
  MOVING SOUTH AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GASKIN...DARLINGTON BY 840 PM CDT...
  GLENDALE...CANEY CREEK BY 855 PM CDT...
  SAND HILL...CLUSTER SPRINGS BY 900 PM CDT...

THE MAIN THREAT FROM THIS STORM IS LARGE HAIL.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.


LAT...LON 3077 8632 3097 8623 3101 8617 3106 8619
      3111 8616 3106 8597 3106 8597 3100 8599
      3099 8604 3083 8604 3070 8608

$$

48-TURNAGE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 7:10 PM CDTSevere Thunderstorm WarningTAEGadsden50 min
Jul 15, 7:22 PM CDTSevere Thunderstorm WarningTAELiberty38 min
Jul 15, 8:14 PM CDTSevere Thunderstorm WarningTAEHolmes46 min
Jul 15, 8:22 PM CDTSpecial Marine WarningTAE83 min
Jul 15, 8:37 PM CDTSevere Thunderstorm WarningTAEWalton23 min
Jul 15, 8:39 PM CDTSevere Thunderstorm WarningTAEFranklin, Liberty51 min
Jul 15, 9:40 PM CDTSpecial Marine WarningTAE95 min
Jul 15, 11:06 PM CDTSevere Thunderstorm WarningTAEWalton24 min
Jul 15, 11:15 PM CDTSpecial Marine WarningTAE60 min
Jul 16, 9:39 AM CDTSpecial Marine WarningTAE36 min
Jul 16, 9:51 AM CDTTornado WarningTAEWalton39 min
Jul 15, 7:23 PM CDTSevere Thunderstorm WarningTAECoffee, Geneva22 min
Jul 15, 8:01 PM CDTSevere Thunderstorm WarningTAECoffee, Geneva29 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004Severe Thunderstorm Warnings in Alabama, 2004Every severe thunderstorm warning in 2004

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.