Alert archive / Florida / Flash Flood Warnings in 2002

Flash Flood Warning 5, NWS Tallahassee, FL

September 14, 20024 counties in Florida; Decatur County, Grady County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Sep 14, 2002, 10:52 AM EDT for 4 counties in Florida; Decatur County, Grady County, Georgia. It was in force for 2 hr. 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 14, 2002, 10:52 AM EDT (14:52 UTC)
Expired: Sep 14, 2002, 1:00 PM EDT
In force: 2 hr
Issued by: NWS Tallahassee, FL
Area: Counties, with a storm outline in the text

Counties Gadsden County, FL, Jefferson County, FL, Leon County, FL, Wakulla County, FL, Decatur County, GA, Grady County, GA

The radar

The Tallahassee radar (KTLH), 24 km from the middle of the area, began a volume at 14:56 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, 2.9 hours before the alert went out and 23 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: 1184 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 757 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -102 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 141452
FFWTLH
FLC039-065-073-129-GAC087-131-141700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...COR EXPIRATION OF WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1036 AM EDT SAT SEP 14 2002

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN GADSDEN COUNTY IN FLORIDA
  EXTREME WEST CENTRAL JEFFERSON COUNTY IN FLORIDA
  CENTRAL LEON COUNTY IN FLORIDA
  THIS INCLUDES TALLAHASSEE
  NORTHEASTERN WAKULLA COUNTY IN FLORIDA
  THIS INCLUDES ST. MARKS
  DECATUR COUNTY IN GEORGIA
  THIS INCLUDES BAINBRIDGE
  SOUTHWESTERN GRADY COUNTY IN GEORGIA

* UNTIL 1 PM EDT

* AT 1032 AM EDT(932 AM CDT)...THE PUBLIC REPORTED VERY HEAVY RAIN   
ASSOCIATED WITH A BAND OF THUNDERSTORMS MOVING NORTHEAST ACROSS THE 
AREA AT 25 MILES PER HOUR.  RAIN RATES ARE ESTIMATED AT 2 TO 4 
INCHES PER HOUR AND WILL CAUSE HAZARDOUS FLOODING IN URBAN AREAS AND 
ON ROADS...SMALL CREEKS AND STREAMS OVER THE NEXT ONE TO TWO HOURS 
IN THE AFFECTED AREAS.

* 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
  QUICKLY. IT ONLY TAKES A FOOT OR TWO OF FLOWING WATER TO SWEEP MOST
  CARS AWAY. REMEMBER...MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.

* RESIDENTS IN FLOOD PRONE AREAS SHOULD MONITOR FLOOD CONDITIONS
  AND BE PREPARED TO MOVE TO HIGHER GROUND SHOULD FLOOD WATERS
  THREATEN. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY MOVE TO
  HIGHER GROUND TO ESCAPE FLOOD WATERS.

* DO NOT DRIVE THROUGH FLOWING WATER. NEARLY HALF OF ALL FLOOD
  FATALITIES ARE VEHICLE RELATED.

LAT...LON 3084 8424 3066 8417 3033 8404 3012 8409
          3010 8427 3030 8434 3078 8465 3105 8475
          3107 8440

.END

LANIER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 10:40 AM EDT	Flash Flood Warning	TAE	Gadsden, Jefferson, Leon, Wakulla	20 min
Sep 14, 10:48 AM EDT	Flash Flood Warning	TAE	Gadsden, Jefferson, Leon, Wakulla	12 min
Sep 14, 11:25 AM EDT	Flash Flood Warning	TAE	Jefferson, Leon, Taylor, Wakulla	50 min
Sep 14, 12:18 PM EDT	Flash Flood Warning	TAE	Jefferson	57 min
Sep 14, 2:15 PM EDT	Flash Flood Warning	TAE	Leon, Wakulla	60 min
Sep 14, 2:55 PM EDT	Flash Flood Warning	TAE	Jefferson, Madison, Taylor	50 min

Nearby

Flash Flood Warnings in Florida, 2002 Flash Flood Warnings in Georgia, 2002 Every flash flood warning in 2002

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.