Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Feb 22, 1993, 2:04 PM EST for Hillsborough County, Florida. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Feb 22, 1993, 2:04 PM EST (19:04 UTC)
- Expired
- Feb 22, 1993, 3:00 PM EST
- In force
- 56 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Hillsborough County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 7.1 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.
- Mixed-layer CAPE
- 926 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 260 m²/s²
- 0-3 km storm-relative helicity
- 263 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTBW 221904 SVRTBW FLC057-222000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 204 PM EST MON FEB 22 1993 THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM EST FOR PEOPLE...... IN WEST CENTRAL FLORIDA ...HILLSBOROUGH COUNTY AND ADJACENT COASTAL WATERS INCLUDING THE BAY AND INLAND WATERS A LINE OF SEVERE THUNDERSTORMS WAS DETECTED BY RADAR OVER NORTHERN HILLSBOROUGH COUNTY. THE THUNDERSTORM LINE WAS MOVING TO THE SOUTHEAST A 1MPH... BUT INDIVIDUAL THUNDERSTORM CELL WERE MOVING TO THE NORTHEAST AT 40 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. IF YOU ARE IN THE PATH OF A SEVERE THUNDERSTORM MOVE TO A REINFORCED BUILDING. IF YOU SEE A TORNADO... WATERSPOUT... HAIL OR DAMAGING WIND... CALL THE WEST CENTRAL AND SOUTHWEST FLORIDA SEVERE WEATHER LINE AT 1-800-282-5584.
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, 9:43 AM EST, 4 hours 21 minutes before
FLZ006-008>021-221535- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 935 AM EST MON FEB 22 1993 AT 930 AM...WEATHER SERVICE RADAR SHOWED A NARROW LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM JUST SOUTH OF GAINESVILLE ACROSS LEVY COUNTY TO THE COAST AND OUT OVER THE GULF FOR 80 MILES. THIS LINE WAS EMBEDDED IN A BROAD BAND OF RAIN SHOWERS THAT STRETCHED FROM THE EAST COAST NEAR JACKSONVILLE ACROSS THE NORTH CENTRAL PORTION OF FLORIDA TO THE WEST COAST BETWEEN APALACHEE BAY AND CRYSTAL THEN OUT OVER THE GULF FOR 160 MILES. MOVEMENT OF THESE RAIN SHOWERS WAS EAST AT 40 MILES AN HOUR. RESIDENTS OF THIS AREA SHOULD BE ALERT TO THES^E THUNDERSTORMS AS THEY MAY PRODUCE SOME HIGH WIND GUSTS. BOATERS AROUND CEDAR KEY SHOULD BE ALERT FOR FAST MOVING THUNDERSTORMS.
Special weather statement, Feb 22, 10:47 AM EST, 3 hours 17 minutes before
FLZ006-008>021-221635- SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 1035 AM EST MON FEB 22 1993 AT 1030 AM...WEATHER SERVICE RADAR SHOWED A NARROW LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM LAKE PALATKA SOUTHWEST TO THE COAST NEAR WACCASASSA BAY THEN OUT OVER THE GULF FOR 130 MILES. THIS LINE WAS EMBEDDED IN A BROAD BAND OF RAIN SHOWERS THAT STRETCHED FROM THE EAST COAST JACKSONVILLE ACROSS THE NORTH CENTRAL PORTION OF FLORIDA TO THE WEST COAST BETWEEN HOMOSASSA AND BAYPORT ... THEN OUT OVER THE GULF WATERS FOR 160 MILES. MOVEMENT OF THIS LINE WAS SOUTHEAST AT 15 MILES AN HOUR. RESIDENT OF NORTH CENTRAL FLORIDA SHOULD BE ALERT TO THESE THUNDERSTORMS AS THEY MAY PRODUCE SOME HIGH WIND GUSTS AND ROUGH SEAS OVER WATER. BOATERS IN THE AREA BETWEEN CEDAR KEY AND BAYPORT SHOULD BE ALERT FOR THESE FAST MOVING VERY STRONG THUNDERSTORMS.
Special weather statement, Feb 22, 11:42 AM EST, 2 hours 22 minutes before
FLZ006-008>021-221735- SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 1135 AM EST MON FEB 22 1993 AT 1130 AM... RADAR SHOWED A LINE OF STRONG THUNDERSTORMS... SOME WITH VERY HEAVY RAINFALL... ACROSS NORTH CENTRAL FLORIDA AND EAST GULF WATERS FROM NEAR THE OCALA/SILVER SPRINGS AREA... SOUTHWEST TO CRYSTAL BAY AND HOMOSASSA... AND CONTINUED TO 110 MILES OFFSHORE OF BAYPORT. MOVEMENT OF THIS LINE WAS SOUTHEAST AT 15 MILES AN HOUR. RESIDENT OF NORTH CENTRAL FLORIDA SHOULD BE ALERT TO THESE THUNDERSTORMS AS THEY MAY PRODUCE GUSTY WINDS... FREQUENT LIGHTNING... AND POSSIBLE FLOODING OF LOW-LYING AREAS AND ROADWAYS. BOATERS SHOULD KEEP ABREAST OF THE CHANGING WEATHER CONDITIONS AND BE PREPARED TO SEEK SAFE HARBOR. THE LINE OF THUNDERSTORMS WAS EMBEDDED IN A LARGE AREA OF RAIN AND THUNDERSTORMS THAT STRETCHED ACROSS THE STATE FROM NEAR JACKSONVILLE AND DAYTONA BEACH... TO NEAR CEDAR KEY AND BAYPORT.
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 4:24 AM EST | Severe Thunderstorm Warning | TBW | Levy | 51 min |
| Feb 22, 5:30 AM EST | Severe Thunderstorm Warning | TBW | Citrus | 60 min |
| Feb 22, 1:05 PM EST | Severe Thunderstorm Warning | TBW | Pasco | 55 min |
| Feb 22, 1:18 PM EST | Severe Thunderstorm Warning | TBW | Pinellas | 57 min |
| Feb 22, 2:14 PM EST | Severe Thunderstorm Warning | TBW | Pinellas | 61 min |
| Feb 22, 2:59 PM EST | Severe Thunderstorm Warning | TBW | Hillsborough, Manatee | 61 min |
| Feb 22, 3:43 PM EST | Severe Thunderstorm Warning | TBW | Polk | 62 min |
| Feb 22, 4:43 PM EST | Severe Thunderstorm Warning | TBW | Sarasota | 62 min |
| Feb 22, 5:19 PM EST | Severe Thunderstorm Warning | TBW | DeSoto | 41 min |
| Feb 22, 5:35 PM EST | Severe Thunderstorm Warning | TBW | Highlands | 55 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1993Every severe thunderstorm warning in 1993
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.