Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 13, NWS Tampa Bay, FL

June 6, 1990Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 6, 1990, 8:37 PM EDT for Hillsborough County, Florida. It was in force for 53 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
Jun 6, 1990, 8:37 PM EDT (00:37 UTC)
Expired
Jun 6, 1990, 9:30 PM EDT
In force
53 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Hillsborough 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
Jun 6, 8:45 PM EDTThunderstorm Wind 0Hillsborough, 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 00:00Z, 0.6 hours before the alert went out and 23 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 00:00Z on 1990-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1470 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 00:00Z on 1990-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
1470 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1438 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
11 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 070037
SVRTBW
FLC057-070130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
837 PM EDT WED JUN 6 1990
 
THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  930 PM EDT
FOR PEOPLE...
 
IN WEST CENTRAL FLORIDA
 
   ...NORTHERN HILLSBOROUGH COUNTY
 
  AND FOR THE COASTAL WATERS AROUND...
 
  ...HILLSBOROUGH COUNTY
 
THE SEVERE THUNDERSTORM OVER HILLSBOROUGH COUNTY CONTINUES TO MOVE
TOWARD THE WEST ABOUT 10 MPH. GUSTY WINDS AND HAIL RANGING FROM 1/4
INCH TO 3/4 INCH HAS BEEN REPORTED OVER THE COUNTY DURING THE PAST
HOUR.
 
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.
 
ANY MARINERS SHOULD SEEK SAFE HARBOR.
 
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, Jun 6, 4:19 PM EDT, 4 hours 18 minutes before
FLZ018-062215-

SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT...
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
415 PM EDT WED JUN 6 1990

.....STRONG THUNDERSTORMS OVER SOUTHWEST FLORIDA....

STRONG THUNDERSTORMS ARE MOVING INTO THE FORT MYERS AREA AND WILL BE MOVING
INTO CHARLOTTE COUNTY WITHIN THE NEXT HOUR OR TWO. THE THUNDERSTORMS ARE
MOVING TO THE WEST AT 5 TO 10 MPH.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS... HAIL..
DANGEROUS LIGHTNING AND TEMPORARY FLOODING OF FLOOD PRONE AND OTHER LOW
LYING AREAS. PEOPLE NEAR THE THE THUNDERSTORMS SHOULD BE PREPARED TO SEEK
SAFE SELTER.

BOATERS SHOULD SEEK SAFE HARBOR BEFORE THESE THUNDERSTORMS MOVE OFF THE
COASST WITH IN THE NEXT SEVERAL HOURS PRODUCING STRONG SHIFING WINDS AND
ROUGH CONFUSED SEAS.
Special weather statement, Jun 6, 4:36 PM EDT, 4 hours 1 minute before
FLZ018-062215-

SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT...
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
415 PM EDT WED JUN 6 1990

.....STRONG THUNDERSTORMS OVER SOUTHWEST FLORIDA....

STRONG THUNDERSTORMS ARE MOVING INTO THE FORT MYERS AREA AND WILL BE MOVING
INTO CHARLOTTE COUNTY WITHIN THE NEXT HOUR OR TWO. THE THUNDERSTORMS ARE
MOVING TO THE WEST AT 5 TO 10 MPH.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS... HAIL..
DANGEROUS LIGHTNING AND TEMPORARY FLOODING OF FLOOD PRONE AND OTHER LOW
LYING AREAS. PEOPLE NEAR THE THE THUNDERSTORMS SHOULD BE PREPARED TO SEEK
SAFE SELTER.

BOATERS SHOULD SEEK SAFE HARBOR BEFORE THESE THUNDERSTORMS MOVE OFF THE
COA]ST WITH IN THE NEXT SEVERAL HOURS PRODUCING STRONG SHIFING WINDS AND
ROUGH CONFUSED SEAS.

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 7, 4:26 PM EDTSevere Thunderstorm WarningTBWHernando49 min
Jun 7, 5:31 PM EDTSevere Thunderstorm WarningTBWPinellas44 min
Jun 7, 5:42 PM EDTSevere Thunderstorm WarningTBWHillsborough48 min
Jun 7, 6:36 PM EDTSevere Thunderstorm WarningTBWSarasota69 min

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.