Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 87, NWS Tallahassee, FL

October 27, 2009Bay County, Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at Oct 27, 2009, 9:14 AM CDT for Bay County, Walton 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
Oct 27, 2009, 9:14 AM CDT (14:14 UTC)
Expired
Oct 27, 2009, 9:46 AM CDT
In force
32 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Bay County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 23 km from the middle of the area, began a volume at 14:14 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 watch it was issued in

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

IssuedProductOfficeLasted
Oct 27, 8:14 AM CDTTornado WatchSPC8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.2 hours before the alert went out and 168 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 2009-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 421 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 2009-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 237 square meters per square second.19395878Sfc1 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
421 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
237 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTAE 271414
TORTAE
FLC005-131-271500-
/O.NEW.KTAE.TO.W.0087.091027T1414Z-091027T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
914 AM CDT TUE OCT 27 2009

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN BAY COUNTY IN THE PANHANDLE OF FLORIDA...
  SOUTHEASTERN WALTON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 1000 AM CDT

* AT 911 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 12 MILES SOUTH OF CHOCTAW...OR 14 MILES
  SOUTHEAST OF SANTA ROSA BEACH...MOVING NORTH AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  BUNKER...CHOCTAW AND PORT WASHINGTON BY 935 AM CDT...
  SEMINOLE HILLS BY 940 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
DAMAGING STRAIGHT LINE WINDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CDT TUESDAY AFTERNOON 
FOR NORTH FLORIDA AND SOUTHWESTERN GEORGIA.

&&

LAT...LON 3040 8614 3040 8612 3042 8614 3049 8614
      3041 8598 3041 8595 3042 8592 3041 8588
      3026 8597 3029 8603 3033 8615
TIME...MOT...LOC 1413Z 200DEG 27KT 3021 8610

$$

38-GODSEY
1 follow-up statement
000 
WWUS52 KTAE 271446
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
946 AM CDT TUE OCT 27 2009

FLC005-131-271455-
/O.CAN.KTAE.TO.W.0087.000000T0000Z-091027T1500Z/
WALTON FL-BAY FL-
946 AM CDT TUE OCT 27 2009

...THE TORNADO WARNING FOR WEST CENTRAL BAY AND SOUTH CENTRAL WALTON
COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED...THUS THE 
TORNADO WARNING HAS BEEN CANCELLED. 

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CDT TUESDAY AFTERNOON 
FOR NORTH FLORIDA AND SOUTHWESTERN GEORGIA.

LAT...LON 3040 8614 3040 8612 3042 8614 3049 8614
      3041 8598 3041 8595 3042 8592 3041 8588
      3026 8597 3029 8603 3033 8615
TIME...MOT...LOC 1445Z 200DEG 27KT 3043 8601

$$

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 27, 6:54 AM CDTSpecial Marine WarningTAE81 min
Oct 27, 7:59 AM CDTSpecial Marine WarningTAE91 min
Oct 27, 9:01 AM CDTSevere Thunderstorm WarningTAEBay, Walton44 min
Oct 27, 9:10 AM CDTSpecial Marine WarningTAE95 min
Oct 27, 9:25 AM CDTSevere Thunderstorm WarningTAEBay50 min
Oct 27, 10:40 AM CDTSpecial Marine WarningTAE80 min
Oct 27, 10:45 AM CDTSpecial Marine WarningTAE38 min
Oct 27, 2:54 PM CDTSpecial Marine WarningTAE36 min

Nearby

Tornado Warnings in Florida, 2009Every tornado warning in 2009Tornadoes in 2009

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.