Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 42, NWS Tallahassee, FL

October 18, 2007Jackson County, Florida; Seminole County, Georgia

NWS Tallahassee, FL issued this tornado warning at Oct 18, 2007, 3:26 PM CDT for Jackson County, Florida; Seminole County, Georgia. It was in force for 34 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
Oct 18, 2007, 3:26 PM CDT (20:26 UTC)
Expired
Oct 18, 2007, 4:00 PM CDT
In force
34 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Jackson County, FL, Seminole County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.4 hours before the alert went out and 93 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 2007-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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 2007-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
224 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
770 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTAE 182026
TORTAE
FLC063-GAC253-182100-
/O.NEW.KTAE.TO.W.0042.071018T2026Z-071018T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
326 PM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN JACKSON COUNTY IN THE PANHANDLE OF FLORIDA...
  THIS INCLUDES THE CITY OF MARIANNA...
  SEMINOLE COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 400 PM CDT/500 PM EDT/

* AT 322 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO NEAR MARIANNA...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  MARIANNA MUNICIPAL AIRPORT BY 335 PM CDT...
  DELLWOOD AND TWO EGG BY 355 PM CDT...
  LOVEDALE...PARRAMORE AND HAYNES BY 400 PM CDT...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 3100 8517 3081 8480 3060 8520 3072 8532
TIME...MOT...LOC 2026Z 231DEG 19KT 3073 8519

$$

9-FOURNIER

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 7:28 AM CDTSpecial Marine WarningTAE62 min
Oct 18, 11:28 AM CDTSpecial Marine WarningTAE32 min
Oct 18, 12:15 PM CDTSpecial Marine WarningTAE60 min
Oct 18, 1:16 PM CDTSpecial Marine WarningTAE59 min
Oct 18, 1:29 PM CDTTornado WarningTAEBay31 min
Oct 18, 1:51 PM CDTTornado WarningTAEBay24 min
Oct 18, 2:13 PM CDTSpecial Marine WarningTAE62 min
Oct 18, 3:54 PM CDTTornado WarningTAEDecatur, Miller, Seminole36 min

Nearby

Tornado Warnings in Florida, 2007Tornado Warnings in Georgia, 2007Every tornado warning in 2007Tornadoes in 2007

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.