Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 4, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 18, 1987, 3:08 AM CST for Okaloosa County, Florida. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Mar 18, 1987, 3:08 AM CST (09:08 UTC)
- Expired
- Mar 18, 1987, 4:15 AM CST
- In force
- 67 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
County Okaloosa County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Apalachicola Mun, FL (KAQQ), launched 00:00Z, 9.1 hours before the alert went out and 185 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPNS 180908 SVRPNS FLC033-113-091-181015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE PENSACOLA FL 308 AM CST WED MAR 18 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 415 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHWEST FLORIDA...SOUTHERN ESCAMBIA...SOUTHERN SANTA ROSA AND OKALOOSA ...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE COUNTIES JUST MENTIONED AT 300 AM CST RADAR INDICATED A SEVERE THUNDERSTORM OFFSHORE JUST SOUTHWEST OF PENSACOLA. THE THUNDERSTORM WAS MOVING TO THE NORTHEAST AT 40 MPH AND WILL LIKELY MOVE ASHORE IN THE VICINITY OF PENSACOLA BEACH. THIS IS APPARENTLY A LARGE STORM CAPABLE OF PRODUCING VERY STONG...DAMAGING WINDS. THE PRESENCE OF A WATERSPOUT IS A STRONG POSSIBILITY. THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING AND STRONG GUSTY WINDS.
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, Mar 18, 2:55 AM CST, 13 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE APALACHICOLA FL 348 AM EST WED MAR 18 1987 A TORNADO WATCH IS IN EFFECT UNTIL 1000 AM EST THIS MORNING FOR A LARGE PART OF THE FLORIDA PANHANDLE AND PART OF EXTREME SOUTH ALABAMA. THIS INCLUDES GULF AND FRANKLIN COUNTIES AND ADJACENT COASTAL WATERS. AT 333 AM EST APALACHICOLA RADAR SHOWED WIDELY SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN FROM 25 MILES NORTH OF MOBILE ALABAMA THROUGH 75 MILES SOUTHWEST OF PENSACOLA FLORIDA. THESE THUNDERSTORMS WERE PART OF A LARGE AREA OF RAIN AND ISOLATED SHOWERS THAT COVERED MOST OF SOUTH ALABAMA AND THE WEST THIRD OF THE FLORIDA PANHANDLE AND ADJACENT COASTAL WATERS. THE THUNDERSTORMS WERE MOVING EAST AT 35 MILES AN HOUR.
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 3:08 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 67 min |
| Mar 18, 4:16 AM CST | Severe Thunderstorm Warning | TAE | Okaloosa, Walton | 55 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1987Every severe thunderstorm warning in 1987
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.