Alert archive / Florida / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 27, 1988, 8:33 PM EDT for Clay County, Saint Johns County, Florida. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Jun 27, 1988, 8:33 PM EDT (00:33 UTC)
- Expired
- Jun 27, 1988, 9:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
Counties Clay County, FL, Saint Johns 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 00:00Z, 0.6 hours before the alert went out and 62 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
- 3431 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 749 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KJAX 280035
SVRJAX
FLC019-109-280115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
833 PM EDT MON JUN 27 1988
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTH FLORIDA
...CLAY...ST.JOHNS
AT 832 PM EDT A SEVERE THUNDERSTORM WAS NEAR ORANGE PARK EXTENDING TO
NEAR THE COAST TO SOUTH PONTE VEDRA BEACH. THIS STORM WAS MOVING
SOUTHEAST AT 20 MPH.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.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, Jun 27, 5:02 PM EDT, 3 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 500 PM EDT MON JUN 27 1988 ...SEVERE THUNDERSTORM WATCH NUMBER 252 CONTINUES FOR NORTHEAST FLORIDA IN THE FOLLOWING COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..GILCHRIST..HAMILTON..LAFAYETTE..NASSAU.. PUTNAM..ST JOHNS..SUWANNEE..AND UNION. THIS WATCH IS ALSO IN EFFECT FOR THE ADJACENT COASTAL WATERS... ALTHOUGH NO SEVERE WEATHER HAS OCCURRED IN NORTHEAST FLORIDA... THUNDERSTORMS HAVE BEEN VERY ACTIVE IN SOUTH GEORGIA FROM NEAR ALBANY ALBANY TO NEAR ALMA. THEY ARE MOVING SOUTHEAST AT 25 MPH. OTHER SHOWERS AND THUNDERSTORMS WERE SOUTHEAST AND SOUTHWEST OF VALDOSTA GEORGIA. PERSONS IN OR CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ON THE ALERT FOR LOCAL WEATHER DEVELOPMENTS AND FOR LATER STATEMENTS OR POSSIBLE WARNINGS. MARINE INTERESTS ARE ADVISED NOT TO GO TOO FAR FROM PORT UNTIL THE THREAT OF SEVERE THUNDERSTORMS HAS DECREASED.
Special weather statement, Jun 27, 6:11 PM EDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 610 PM EDT MON JUN 27 1988 ...SEVERE THUNDERSTORM WATCH NUMBER 252 CONTINUES FOR NORTHEAST FLORIDA IN THE FOLLOWING COUNTIES...ALACHUA..BAKER..BRADFORD.. CLAY..COLUMBIA..DUVAL..GILCHRIST..HAMILTON..LAFAYETTE..NASSAU.. PUTNAM..ST JOHNS..SUWANNEE..AND UNION. THIS WATCH IS ALSO IN EFFECT FOR THE ADJACENT COASTAL WATERS... VERY STRONG THUNDERSTORMS WERE SCATTERED ALONG THE FLORIDA-GEORGIA BORDER NEAR BELLVILLE IN HAMILTON COUNTY EAST TO THE COAST NEAR FERNANDINA BEACH. THEY WERE MOVING SOUTHEAST AT 25 MPH. PERSONS IN OR CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ON THE ALERT FOR LOCAL WEATHER DEVELOPMENTS AND FOR LATER STATEMENTS OR POSSIBLE WARNINGS. MARINE INTERESTS ARE ADVISED NOT TO GO TOO FAR FROM PORT UNTIL THE THREAT OF SEVERE THUNDERSTORMS HAS DECREASED WHICH WILL MOSTLY LIKELY BE BY MIDNIGHT. AS THESE THUNDERSTORMS MOVE OFF THE C;OAST FROM FERNANDINA BEACH SOUTH TO ST AUGUSTINE THIS EVENING...BUILDING SEAS.. POOR VISIBILITY..AND STRONG GUSTY WINDS CAN BE EXPECTED.
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 9:28 PM EDT | Tornado Warning | JAX | Saint Johns | 32 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1988Every severe thunderstorm warning in 1988
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.