Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 22, 1987, 4:07 PM EST for 4 counties in Florida. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- Feb 22, 1987, 4:07 PM EST (21:07 UTC)
- Expired
- Feb 22, 1987, 5:00 PM EST
- In force
- 53 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
Counties Alachua County, FL, Bradford County, FL, Clay County, FL, Putnam 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
Jacksonville, FL (KAYS), launched 12:00Z, 9.1 hours before the alert went out and 84 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
- 534 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 289 m²/s²
- 0-3 km storm-relative helicity
- 467 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Feb 22, 2:12 PM EST, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 210 PM EST SUN FEB 22 1987 ...TORNADO WATCH NUMBER 15 IS IN EFFECT UNTIL 700 PM EST FOR THE FOLLOWING NORTHEAST FLORIDA COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..FLAGLER..GILCHRIST..HAMILTON..LAFAYETTE.. NASSAU..PUTNAM..ST. JOHNS..SUWANNEE..UNION. IN THE PAST HOUR...A LARGE AREA OF RAIN CONTINUED TO MOVE OVER MOST OF NORTHEAST FLORIDA. THERE HAVE BEEN SOME ISOLATED HEAVY THUNDERSTORMS THIS MORNING IN CLAY AND ST. JOHNS COUNTIES AND MORE THUNDERSTORM ACTIVITY IS EXPECTED IN THE NEXT FEW HOURS. THESE THUNDERSTORMS WILL HAVE PERIODS OF LOCALLY HEAVY RAIN..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL.
Special weather statement, Feb 22, 2:31 PM EST, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 210 PM EST SUN FEB 22 1987 ...TORNADO WATCH NUMBER 15 IS IN EFFECT UNTIL 700 PM EST FOR THE FOLLOWING NORTHEAST FLORIDA COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..FLAGLER..GILCHRIST..HAMILTON..LAFAYETTE.. NASSAU..PUTNAM..ST. JOHNS..SUWANNEE..UNION. IN THE PAST HOUR...A LARGE AREA OF RAIN CONTINUED TO MOVE OVER MOST OF NORTHEAST FLORIDA. THERE HAVE BEEN SOME ISOLATED HEAVY THUNDERSTORMS THIS MORNING IN CLAY AND ST. JOHNS COUNTIES AND MORE THUNDERSTORM ACTIVITY IS EXPECTED IN THE NEXT FEW HOURS. THESE THUNDERSTORMS WILL HAVE PERIODS OF LOCALLY HEAVY RAIN..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL.
Special weather statement, Feb 22, 3:26 PM EST, 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 325 PM EST SUN FEB 22 1987 ...TORNADO WATCH NUMBER 15 IS IN EFFECT UNTIL 700 PM EST FOR THE FOLLOWING NORTHEAST FLORIDA COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..FLAGLER..GILCHRIST..HAMILTON..LAFAYETTE.. NASSAU..PUTNAM..ST. JOHNS..SUWANNEE..UNION. IN THE PAST HOUR...VERY STRONG THUNDERSTORMS HAVE DEVELOPED OVER NORTHEAST FLORIDA WITHIN A LARGE AREA OF RAIN. THE STRONGEST THUNDERSTORMS WERE IN THE JACKSONVILLE AREA AND BETWEEN CROSS CITY AND LAKE CITY. THESE THUNDERSTORMS WILL HAVE PERIODS OF LOCALLY HEAVY RAIN..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL. BOATERS OPERATI1NG ALONG THE NORTHEAST FLORIDA COAST BE ALERT FOR BUILDING SEAS...GUSTY WINDS...AND VISIBILITY LESS THAN ONE MILE IN FOG AND HEAVY RAINS AS THESE THUNDERSTORMS MOVE OFF THE COAST WITHIN THE NEXT HOUR OR SO.
Special weather statement, Feb 22, 3:29 PM EST, 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 325 PM EST SUN FEB 22 1987 ...TORNADO WATCH NUMBER 15 IS IN EFFECT UNTIL 700 PM EST FOR THE FOLLOWING NORTHEAST FLORIDA COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..FLAGLER..GILCHRIST..HAMILTON..LAFAYETTE.. NASSAU..PUTNAM..ST. JOHNS..SUWANNEE..UNION. IN THE PAST HOUR...VERY STRONG THUNDERSTORMS HAVE DEVELOPED OVER NORTHEAST FLORIDA WITHIN A LARGE AREA OF RAIN. THE STRONGEST THUNDERSTORMS WERE IN THE JACKSONVILLE AREA AND BETWEEN CROSS CITY AND LAKE CITY. THESE THUNDERSTORMS WILL HAVE PERIODS OF LOCALLY HEAVY RAIN..GUSTY WINDS..FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL. BOATERS OPERATING ALONG THE NORTHEAST FLORIDA COAST BE ALERT FOR BUILDING SEAS...GUSTY WINDS...AND VISIBILITY LESS THAN ONE MILE IN FOG AND HEAVY RAINS AS THESE THUNDERSTORMS MOVE OFF THE COAST WITHIN THE NEXT HOUR OR SO. MOVEMENT OF THIS ACTIVITY WAS EAST 7AT 40 MPH.
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 4:07 PM EST | Severe Thunderstorm Warning | JAX | Saint Johns | 53 min |
| Feb 22, 6:00 PM EST | Tornado Warning | JAX | Saint Johns | 30 min |
| Feb 22, 6:23 PM EST | Tornado Warning | JAX | Putnam | 37 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.