Alert archive / Florida / Tornado Warnings in 1988

Tornado Warning 6, NWS Jacksonville, FL

June 27, 1988Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Jun 27, 1988, 9:28 PM EDT for Saint Johns County, Florida. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Jun 27, 1988, 9:28 PM EDT (01:28 UTC)
Expired
Jun 27, 1988, 10:00 PM EDT
In force
32 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County 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, 1.5 hours before the alert went out and 71 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 1988-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3431 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 00:00Z on 1988-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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 tornado 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, 4 hours 26 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, 3 hours 17 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.

IssuedProductOfficeCountiesLasted
Jun 27, 8:33 PM EDTSevere Thunderstorm WarningJAXClay, Saint Johns42 min

Nearby

Tornado Warnings in Florida, 1988Every tornado warning in 1988Tornadoes 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.