Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 36, NWS Tallahassee, FL

September 20, 2007Franklin County, Florida

NWS Tallahassee, FL issued this tornado warning at Sep 20, 2007, 10:56 PM EDT for Franklin County, Florida. It was in force for 49 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: Sep 20, 2007, 10:56 PM EDT (02:56 UTC)
Expired: Sep 20, 2007, 11:45 PM EDT
In force: 49 min
Issued by: NWS Tallahassee, FL
Area: Counties, with a storm outline in the text

County Franklin County, FL

The radar

The Tallahassee radar (KTLH), 89 km from the middle of the area, began a volume at 02:58 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 00:00Z, 2.9 hours before the alert went out and 91 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 547 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 577 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 78 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.

000 
WFUS52 KTAE 210256
TORTAE
FLC037-210345-
/O.NEW.KTAE.TO.W.0036.070921T0256Z-070921T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1056 PM EDT THU SEP 20 2007

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN FRANKLIN COUNTY IN FLORIDA...
  THIS INCLUDES THE CITY OF APALACHICOLA...

* UNTIL 1145 PM EDT

* AT 954 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 18 MILES EAST OF APALACHICOLA...OR ABOUT 9 MILES
  SOUTH OF CARRABELLE...MOVING WEST NORTHWEST AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  APALACHICOLA BY 1120 PM EDT...

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. 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 2967 8488 2974 8477 2975 8482 2972 8490
      2974 8493 2969 8501 2972 8519 2986 8494
      2980 8474 2975 8476 2978 8470 2976 8468
      2966 8482
TIME...MOT...LOC 0256Z 098DEG 31KT 2972 8473

$$

22-BARRY

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 8:15 PM EDT	Special Marine Warning	TAE		2 hr
Sep 20, 8:27 PM EDT	Severe Thunderstorm Warning	TAE	Dixie	48 min
Sep 20, 10:09 PM EDT	Special Marine Warning	TAE		66 min
Sep 20, 10:35 PM EDT	Severe Thunderstorm Warning	TAE	Franklin	40 min
Sep 20, 11:18 PM EDT	Special Marine Warning	TAE		117 min
Sep 21, 1:09 AM EDT	Special Marine Warning	TAE		2 hr
Sep 21, 2:13 AM EDT	Special Marine Warning	TAE		2 hr
Sep 21, 3:19 AM EDT	Special Marine Warning	TAE		56 min
Sep 21, 6:06 AM EDT	Tornado Warning	TAE	Franklin	39 min
Sep 21, 10:58 AM EDT	Coastal Flood Warning	TAE	Franklin, Jefferson, Wakulla	9 hr
Sep 21, 12:49 PM EDT	Flood Watch	TAE	Bay, Franklin, Gulf, Walton	8 min
Sep 21, 12:57 PM EDT	Flood Watch	TAE	Bay, Calhoun, Franklin, Gulf, Holmes, Jackson and 2 more	12 hr
Sep 21, 5:27 PM EDT	Severe Thunderstorm Warning	TAE	Walton	48 min
Sep 21, 5:56 PM EDT	Tornado Warning	TAE	Holmes, Washington	49 min
Sep 21, 6:26 PM EDT	Tornado Warning	TAE	Holmes	49 min
Sep 21, 6:32 PM EDT	Severe Thunderstorm Warning	TAE	Wakulla	43 min

Nearby

Tornado Warnings in Florida, 2007 Every tornado warning in 2007 Tornadoes 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; radar from the NEXRAD Level II archive.