Alert archive / Florida / Flash Flood Warnings in 2002

Flash Flood Warning 7, NWS Tallahassee, FL

September 14, 2002Jefferson County, Florida

NWS Tallahassee, FL issued this flash flood warning at Sep 14, 2002, 12:18 PM EDT for Jefferson County, Florida. It was in force for 57 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 14, 2002, 12:18 PM EDT (16:18 UTC)
Expired
Sep 14, 2002, 1:15 PM EDT
In force
57 min
Issued by
NWS Tallahassee, FL
Area
Counties, with a storm outline in the text

County Jefferson County, FL

The radar

The Tallahassee radar (KTLH), 48 km from the middle of the area, began a volume at 16:22 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, 4.3 hours before the alert went out and 46 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 2002-09-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1184 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 2002-09-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -46 square meters per square second.193958Sfc1 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
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 141618
FFWTLH
FLC065-141715-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1214 PM EDT SAT SEP 14 2002

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN FLORIDA
  THIS INCLUDES MONTICELLO

* UNTIL 115 PM EDT

* AT 1211 PM EDT(1111 AM CDT)...RADAR INDICATED A BAND OF INTENSE 
PRECIPITATION MOVING TO THE NORTHEAST AT 20 MILES PER HOUR ACROSS 
JEFFERSON COUNTY.  TWO TO THREE INCHES OF RAIN PER HOUR CAN BE 
EXPECTED CAUSING LOCAL ROADS AND DITCHES TO TEMPORARILY FLOOD.

* 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.


LAT...LON 3065 8365 3030 8385 3014 8398 3051 8401

.END

52-LANIER

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 14, 10:40 AM EDTFlash Flood WarningTAEGadsden, Jefferson, Leon, Wakulla20 min
Sep 14, 10:48 AM EDTFlash Flood WarningTAEGadsden, Jefferson, Leon, Wakulla12 min
Sep 14, 10:52 AM EDTFlash Flood WarningTAEGadsden, Jefferson, Leon, Wakulla2 hr
Sep 14, 11:25 AM EDTFlash Flood WarningTAEJefferson, Leon, Taylor, Wakulla50 min
Sep 14, 2:15 PM EDTFlash Flood WarningTAELeon, Wakulla60 min
Sep 14, 2:55 PM EDTFlash Flood WarningTAEJefferson, Madison, Taylor50 min

Nearby

Flash Flood Warnings in Florida, 2002Every 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.