Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 98, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Dec 3, 1990, 10:20 AM CST for Okaloosa County, Walton County, Florida. It was in force for 55 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 3, 1990, 10:20 AM CST (16:20 UTC)
- Expired
- Dec 3, 1990, 11:15 AM CST
- In force
- 55 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
Counties Okaloosa County, FL, Walton County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 3, 10:30 AM CST | Thunderstorm Wind 0 | Walton, FL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 4.3 hours before the alert went out and 21 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
- 143 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 233 m²/s²
- 0-3 km storm-relative helicity
- 279 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPNS 031623 SVRPNS FLC091-131-031715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE PENSACOLA FL 1020 AM CST MON DEC 3 1990 THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1115 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST FLORIDA ...SOUTHERN OKALOOSA COUNTY...WALTON COUNTY AND FOR BOATERS AND MARINE INTERESTS ON THE COASTAL WATERS FROM MARY ESTHER TO INLET BEACH... ...OKALOOSA LINE OF THUNDERSTORMS...SOME SEVERE...MOVING ACROSS PANHANDLE. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Dec 3, 8:40 AM CST, 1 hour 40 minutes before
FLZ004-031525- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE APALACHICOLA FLORIDA 928 AM EST MON DEC 3 1990 ...TORNADO WATCH IS IN EFFECT FOR THE FLORIDA PANHANDLE UNTIL 2 PM EST... AT 928 AM EST...SCATTERED SHOWERS WERE DEVELOPING RAPIDLY OVER THE PANHANDLE AND THE COASTAL WATERS WEST OF THE APALACHICOLA RIVER. SCATTERED SHOWERS WERE OCCURRING OVER SOUTH ALABAMA. MOVEMENT WAS TO THE NORTHEAST AT 20 MILES AN HOUR.
Special weather statement, Dec 3, 9:32 AM CST, 48 minutes before
FLZ004-031630- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE APALACHICOLA FLORIDA 1025 AM EST MON DEC 3 1990 ...TORNADO WATCH IS IN EFFECT FOR THE FLORIDA PANHANDLE UNTIL 2 PM EST... AT 1025 AM EST...SCATTERED THUNDERSTORMS...SOME WITH HEAVY RAIN... WERE OCCURRING OVER THE FLORIDA PANHANDLE AND THE COASTAL WATERS. FROM NEAR PANAMA CITY TO PENSACOLA AND SOUTH INTO THE GULF FOR 50 MILES. MOVEMENT WAS TO THE NORTHERAST AT 20 MILES AN HOUR.
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 8:38 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 67 min |
| Dec 3, 9:15 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 60 min |
| Dec 3, 9:15 AM CST | Severe Thunderstorm Warning | TAE | Okaloosa | 60 min |
| Dec 3, 10:50 AM CST | Severe Thunderstorm Warning | TAE | Holmes, Washington | 55 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.