Alert archive / Florida / Flash Flood Warnings in 2009

Flash Flood Warning 13, NWS Tallahassee, FL

March 31, 2009Gadsden County, Leon County, Liberty County, Florida; Decatur County, Grady County, Thomas County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Mar 31, 2009, 6:54 PM EDT for Gadsden County, Leon County, Liberty County, Florida; Decatur County, Grady County, Thomas County, Georgia. It was in force for 51 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: Mar 31, 2009, 6:54 PM EDT (22:54 UTC)
Expired: Mar 31, 2009, 7:45 PM EDT
In force: 51 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Gadsden County, FL, Leon County, FL, Liberty County, FL, Decatur County, GA, Grady County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 37 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 36 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2169 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 172 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 
WGUS52 KTAE 312254
FFWTAE
FLC039-073-077-GAC087-131-275-312345-
/O.NEW.KTAE.FF.W.0013.090331T2254Z-090331T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
654 PM EDT TUE MAR 31 2009

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN GADSDEN COUNTY IN FLORIDA...
  WESTERN LEON COUNTY IN FLORIDA...
  NORTHEASTERN LIBERTY COUNTY IN FLORIDA...
  WEST CENTRAL THOMAS COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHEASTERN DECATUR COUNTY IN SOUTHWEST GEORGIA...
  GRADY COUNTY IN SOUTHWEST GEORGIA...
  THIS INCLUDES THE CITY OF CAIRO...

* UNTIL 745 PM EDT

* AT 651 PM EDT...EMGERGENCY MANAGEMENT REPORTED FLASH FLOODING FROM
  THUNDERSTORMS ALONG A LINE EXTENDING FROM WHIGHAM TO 15 MILES
  SOUTHWEST OF QUINCY...OR ALONG A LINE EXTENDING FROM CAIRO TO 17
  MILES EAST OF BLOUNTSTOWN...MOVING SOUTHEAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  OCHLOCKNEE

* A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR
  OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER
  GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS
  SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
  DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF
  UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE.

* DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
  ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
  CROSS SAFELY IT ONLY TAKES A FOOT OR TWO OF FLOWING WATER TO
  SWEEP MOST CARS AWAY. REMEMBER...MOST FLASH FLOOD DEATHS OCCUR
  IN AUTOMOBILES.

LAT...LON 3099 8403 3066 8408 3031 8453 3039 8487
      3101 8424

$$

18-WOOL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 8:33 PM EDT	River Flood Warning	TAE	Gadsden, Leon	6 days
Mar 31, 8:00 AM EDT	River Flood Warning	TAE	Walton	6 days
Mar 31, 11:55 AM EDT	River Flood Advisory	TAE	Holmes, Washington	36 hr
Mar 31, 4:26 PM EDT	Severe Thunderstorm Warning	TAE	Holmes, Walton	64 min
Mar 31, 4:34 PM EDT	Tornado Warning	TAE	Walton	41 min
Mar 31, 5:03 PM EDT	Areal Flood Advisory	TAE	Holmes, Jackson, Walton, Washington	117 min
Mar 31, 5:07 PM EDT	Tornado Warning	TAE	Jackson	38 min
Mar 31, 5:12 PM EDT	Severe Thunderstorm Warning	TAE	Bay, Holmes, Walton, Washington	48 min
Mar 31, 5:50 PM EDT	Tornado Warning	TAE	Jackson	25 min
Mar 31, 6:04 PM EDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Jackson, Washington	41 min
Mar 31, 6:28 PM EDT	Tornado Warning	TAE	Calhoun, Jackson, Liberty	47 min
Mar 31, 7:34 PM EDT	Flash Flood Warning	TAE	Jefferson, Leon	41 min
Mar 31, 7:34 PM EDT	Tornado Warning	TAE	Madison, Taylor	41 min
Mar 31, 8:43 AM EDT	River Flood Warning	TAE	Clay	26 hr
Mar 31, 12:05 PM EDT	River Flood Advisory	TAE	Lowndes	36 hr
Mar 31, 4:51 PM EDT	Tornado Warning	TAE	Baker, Mitchell	39 min
Mar 31, 5:01 PM EDT	Severe Thunderstorm Warning	TAE	Berrien, Irwin	29 min
Mar 31, 5:27 PM EDT	Tornado Warning	TAE	Colquitt, Mitchell	48 min
Mar 31, 5:29 PM EDT	Severe Thunderstorm Warning	TAE	Colquitt, Tift, Worth	46 min
Mar 31, 6:17 PM EDT	Severe Thunderstorm Warning	TAE	Berrien, Colquitt, Cook, Tift, Worth	43 min
Mar 31, 6:22 PM EDT	Tornado Warning	TAE	Colquitt, Cook, Tift	23 min
Mar 31, 6:43 PM EDT	Tornado Warning	TAE	Colquitt, Cook	26 min
Mar 31, 6:44 PM EDT	Flash Flood Warning	TAE	Berrien, Brooks, Colquitt, Cook, Thomas, Tift	46 min
Mar 31, 6:57 PM EDT	Severe Thunderstorm Warning	TAE	Brooks, Lowndes, Thomas	48 min
Mar 31, 7:31 PM EDT	Severe Thunderstorm Warning	TAE	Lanier, Lowndes	44 min

Nearby

Flash Flood Warnings in Florida, 2009 Flash Flood Warnings in Georgia, 2009 Every flash flood warning 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.