Alert archive / Florida / Flash Flood Warnings in 1998
Flash Flood Warning 9, NWS Tallahassee, FL
NWS Tallahassee, FL issued this flash flood warning at Sep 29, 1998, 12:47 AM CDT for Walton County, Florida. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 29, 1998, 12:47 AM CDT (05:47 UTC)
- Expired
- Sep 29, 1998, 12:40 PM CDT
- In force
- 12 hr
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
County Walton County, FL
The radar
The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 05:49 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, 5.8 hours before the alert went out and 181 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.
- Mixed-layer CAPE
- 855 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 836 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTLH 290549 FFWTLH FLC131-291740- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE TALLAHASSEE FL 147 AM EDT TUE SEP 29 1998 THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A * FLOOD WARNING FOR... WALTON COUNTY IN NORTHWESTERN FLORIDA * UNTIL 1240 PM CDT (140 PM EDT) DOPPLER RADAR INDICATES EXTREMELY HEAVY RAINFALL IN BANDS FROM GEORGES WILL CONTINUE TO AFFECT WALTON COUNTY THROUGH TUESDAY. DOPPLER RADAR RAINFALL ESTIMATES INDICATE OVER 15 INCHES OF RAIN HAS FALLEN ACROSS THE WESTERN HALF OF WALTON COUNTY. ADDITIONAL RAINFALL AMOUNTS OF 5 TO 10 INCHES ARE POSSIBLE THROUGH TUESDAY. LOW-LYING ROADWAYS AND FLOOD PRONE AREAS WILL CONTINUE TO BE AFFECTED BY FLOOD WATERS THE NEXT FEW DAYS. 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. VOLKMER
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 7:55 PM CDT | Tornado Warning | TAE | Walton | 15 min |
| Sep 28, 8:30 PM CDT | Tornado Warning | TAE | Walton | 15 min |
| Sep 29, 6:52 AM CDT | Tornado Warning | TAE | Holmes, Washington | 63 min |
| Sep 29, 7:51 AM CDT | Flash Flood Warning | TAE | Bay, Holmes, Washington | 6 hr |
| Sep 29, 8:07 AM CDT | Tornado Warning | TAE | Bay | 48 min |
| Sep 29, 8:24 AM CDT | Tornado Warning | TAE | Washington | 31 min |
| Sep 29, 8:49 AM CDT | Tornado Warning | TAE | Holmes | 46 min |
| Sep 29, 9:13 AM CDT | Severe Thunderstorm Warning | TAE | Bay | 77 min |
| Sep 29, 9:49 AM CDT | Tornado Warning | TAE | Gulf | 61 min |
| Sep 29, 10:13 AM CDT | Severe Thunderstorm Warning | TAE | Calhoun, Jackson | 77 min |
| Sep 29, 2:35 PM CDT | Tornado Warning | TAE | Gulf | 35 min |
| Sep 29, 2:57 PM CDT | Flash Flood Warning | TAE | Gadsden, Leon, Liberty | 4 hr |
| Sep 29, 2:57 PM CDT | Flash Flood Warning | TAE | Franklin, Wakulla | 4 hr |
| Sep 29, 4:14 PM CDT | Severe Thunderstorm Warning | TAE | Leon, Wakulla | 76 min |
| Sep 29, 4:14 PM CDT | Severe Thunderstorm Warning | TAE | Gadsden | 76 min |
| Sep 29, 5:30 PM CDT | Severe Thunderstorm Warning | TAE | Leon, Wakulla | 60 min |
Nearby
Flash Flood Warnings in Florida, 1998Every flash flood warning in 1998
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.