Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Tampa Bay, FL

March 30, 1990Highlands County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 30, 1990, 4:25 PM EST for Highlands County, Florida. It was in force for 50 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
Mar 30, 1990, 4:25 PM EST (21:25 UTC)
Expired
Mar 30, 1990, 5:15 PM EST
In force
50 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Highlands 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

TimeReportWhereRemark
Mar 30, 5:00 PM ESTThunderstorm Wind 50Highlands, 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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.4 hours before the alert went out and 112 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, Tampa Bay, FL at 12:00Z on 1990-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 783 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, Tampa Bay, FL at 12:00Z on 1990-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
783 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTBW 302126
SVRTBW
FLC055-302215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
425 PM EST FRI MAR 30 1990
 
THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM EST
FOR PEOPLE...
 
IN CENTRAL FLORIDA
 
   ...HIGHLANDS COUNTY
 
A SEVERE THUNDERSTORM WAS INDICATED BY RADAR NEAR LAKE PLACID MOVING
NORTH TOWARD SEBRING AT 15 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING. MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.
 
IF YOU SEE A TORNADO... HAIL OR DAMAGING WIND... CALL YOUR LOCAL
SHERIFFS OFFICE OR COUNTY EMERGENCY OPERATIONS CENTER AND REQUEST
THEY RELAY THIS INFORMATION TO THE NATIONAL WEATHER SERVICE.

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 30, 2:46 PM EST, 1 hour 39 minutes before
FLZ010-013-014-015-018-302045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
ISSUED 240 PM EST FRI MAR 30 1990

.....THUNDERSTORMS ACCOMPANIED WITH LOCALLY HEAVY RAIN OVER FLORODA.....

NUMEROUS THUNDERSTORMS ACCOMPANIED WITH LOCALLY HEAVY RAIN CONTINUED TO
DEVELOPE OF THE PENINSULA OF FLORIDA.  THEY WERE LOCATED NEAR CRYSTAL
RIVER...SOUTHWEST TO NORTHWEST OF MELBOURNE...NORTHWEST OF VERO BEACH
AND FROM EAST OF BONITA SPRINGS TO EAST OF FORT MYERS TO LAKE PLACID.

TEMPORARY FLOODING OF FLOOD PRONE AND OTHER LOW LYING AREAS IS POSSIBLE
...DRIVERS AND OTHER PERSONS NEAR THESE AREAS SHOULD EXERCISE CAUTION...
ADDITIONALLY...VISIBILITIES WILL BE REDUCED WITHIN THE RAINFALL AREAS.

MOVEMENT WAS NORTH AT 10 MILES AN HOUR.
Special weather statement, Mar 30, 2:52 PM EST, 1 hour 33 minutes before
FLZ010-013-014-015-018-302045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
ISSUED 240 PM EST FRI MAR 30 1990

.....THUNDERSTORMS ACCOMPANIED WITH LOCALLY HEAVY RAIN OVER FLORIDA.....

NUMEROUS THUNDERSTORMS ACCOMPANIED WITH LOCALLY HEAVY RAIN CONTINUED TO
DEVELOPE OVER THE PENINSULA OF FLORIDA.  THEY WERE LOCATED NEAR CRYSTAL
RIVER...SOUTHWEST TO NORTHWEST OF MELBOURNE...NORTHWEST OF VERO BEACH
AND FROM EAST OF BONITA SPRINGS TO EAST OF FORT MYERS TO LAKE PLACID.

TEMPORARY FLOODING OF FLOOD PRONE AND OTHER LOW LYING AREAS IS POSSIBLE
...DRIVERS AND OTHER PERSONS NEAR THESE AREAS SHOULD EXERCISE CAUTION...
ADDITIONALLY...VISIBILITIES WILL BE REDUCED WITHIN THE RAINFALL AREAS.

MOVEMENT WAS NORTH AT 10 MILES AN HOUR.
Special weather statement, Mar 30, 3:39 PM EST, 46 minutes before
FLZ010-013-014-015-018-302145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
340 PM EST FRI MAR 30 1990

.....THUNDERSTORMS ACCOMPANIED WITH LOCALLY HEAVY RAIN OVER FLORIDA.....

NUMEROUS THUNDERSTORMS WITH LOCALLY HEAVY RAIN CONTINUED TO DEVELOP OVER
THE PENINSULA OF FLORIDA.  THE STRONGEST THUNDERSTORMS THEY WERE LOCATED
NEAR CRYSTAL RIVER... FROM MULBERRY TO ARCADIA TO SEBRING... AND EAST OF
FORT MYERS ALONG THE CALOOSAHATCHEE RIVER TO LAKE OKEECHOBEE.

STRONG GUSTY WINDS... SMALL HAIL.. DANGEROUS LIGHTNING AND TEMPORARY
FLOODING OF FLOOD PRONE AND OTHER LOW LYING AREAS IS POSSIBLE ...MOTORISTS
AND OTHER PEOPLE NEAR THESE AREAS SHOULD EXERCISE CAUTION. VISIBILITIES
WILL BE REDUCED WITHIN THE RAINFALL AREAS.

MOVEMENT WAS NORTH AT 10 MILES AN HOUR.

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.