Alert archive / Florida / Tornado Warnings in 1991
Tornado Warning 3, NWS Miami, FL
NWS Miami, FL issued this tornado warning at Jun 30, 1991, 4:00 PM EDT for Glades County, Hendry County, Florida. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1991, 4:00 PM EDT (20:00 UTC)
- Expired
- Jun 30, 1991, 4:30 PM EDT
- In force
- 30 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
Counties Glades County, FL, Hendry County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 8.0 hours before the alert went out and 161 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
- 44 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1147 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 302001 TORMIA FLC043-051-302030- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MIAMI FL 400 PM EDT SUN JUN 30 1991 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 430 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH FLORIDA ...SOUTHERN GLADES COUNTY...NORTHERN HENDRY COUNTY AT 347 PM EDT THE GLADES COUNTY SHERIFFS OFFICE REPORTED A TORNADO ABOUT 7 MILES NORTHEAST OF LA BELLE. THE TORNADO WAS MOVING TOWARD LA BELLE AT AN UNKNOWN SPEED. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS UNDER STURDY FURNITURE IN AN INTERIOR ROOM ON THE LOWEST FLOOR. USE PILLOWS TO COVER YOUR BODY. AVOID WINDOWS. A MOBILE HOME IS NOT A SAFE REFUGE FROM A TORNADO. MOVE TO A MORE SUBSTANTIAL BUILDING. IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN ASK A LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
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 30, 1:48 PM EDT, 2 hours 12 minutes before
FLZ015>023-301835- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTION NATIONAL WEATHER SERVICE MIAMI FL 127 PM EDT SUN JUN 30 1991 ...STRONG THUNDERSTORMS CONTINUING... AT 127 PM MIAMI RADAR INDICATED SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUING ALONG AND OFFSHORE FROM NORTH OF VERO BEACH TO THE CAY SAL BANK. STRONGEST THUNDERSTORMS CONTINUED TO PRODUCED VERY HEAVY RAINFALL AND WERE OVER ST LUCIE...MARTIN... AND PALM BEACH COUNTIES AS WELL AS THE EXTREME SOUTHERN PENINSULA AND THE ATLANTIC WATERS FROM THE BIMINIS TO THE CAY SAL BANK. RESIDENTS SHOULD BE ALERT FOR PERIODS OF HEAVY RAIN... LIGHTNING... AND POSSIBLY STRONG GUSTY SURFACE WINDS DURING THE NEXT FEW HOUR. BOATERS ARE URGED TO USE EXTREME CAUTION AND SEEK SAFE HARBOR IF POSSIBLE. IF NOT... THEN STAY BELOW DECK AS THESE THUNDERSTORMS ARE LIKELY TO PRODUCE STRONG SURFACE WINDS... VERY ROUGH SEAS... PERIODS OF VERY HEAVY RAIN AND DANGEROUS CLOUD TO WATER LIGHTNING. ELSEWHERE... WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE SPREADING OVER MOST OF THE PENINSULA TO INCLUDE THE WESTERN SECTIONS. MANY WERE PRODUCING VERY HEAVY RAINFALL. SCATTERED SHOWERS AND THUNDERSTORMS WERE DETECTED ACROSS THE GULF OF MEXICO AND THE FLORIDA KEYS. SOME WITH HEAVY RAINFALL. MOVEMENT REMAINED NORTHWEST AT 10 MILES AN HOUR. HIGHEST PRECIPITATION TOP WAS 54 THOUSAND FEET IN WESTERN PALM BEACH COUNTY.
Special weather statement, Jun 30, 2:32 PM EDT, 1 hour 28 minutes before
FLZ020-020-019-301930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 230 PM EDT SUN JUN 30 1991 AT 230PM EDT...WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS OVER NORTHERN PALM BEACH AND SOUTHERN MARTIN COUNTIES FROM 10 MILES NORTHWEST OF WEST PALM BEACH NORTHWEST TO JUST SOUTH OF PORT MAYACA AND INDIAN TOWN. THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND POSSIBLY SMALL HAIL. THESE STORMS ARE MOVING TO THE NORTHWEST AT 10 MILES AN HOUR. SCATTERED SHOWERS CONTINUED ACROSS MUCH OF THE AREA FROM OKEECHOBEE COUNTY SOUTH AND EAST THROUGH PALM BEACH COUNTY. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGHOUT THE AREA DURING THE AFTERNOON AND EARLY EVENING HOURS. NNNN
Special weather statement, Jun 30, 2:44 PM EDT, 1 hour 16 minutes before
FLZ015>023-301935- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 225 PM EDT SUN JUN 30 1991 ...STRONG THUNDERSTORMS CONTINUE... AT 225 PM MIAMI RADAR INDICATED SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUING OVER MOST ALL THE PENINSULA SOUTH OF A LINE FROM VERO BEACH TO VENICE. STRONGEST THUNDERSTORMS CONTINUED TO PRODUCED VERY HEAVY RAINFALL AND WERE WIDESPREAD ACROSS THE PENINSULA. RESIDENTS SHOULD BE ALERT FOR PERIODS OF HEAVY RAIN... LIGHTNING... AND POSSIBLY STRONG GUSTY SURFACE WINDS DURING THE REMAINDER OF THIS AFTERNOON. OVER THE ATLANTIC.... NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE ATLANTIC FROM EAST OF VERO BEACH TO THE CAY SAL BANK AND ACROSS THE BAHAMAS TO THE EAST. MOST WERE PRODUCING EITHER HEAVY OR VERY HEAVY RAINFALL. STRONGEST THUNDERSTORMS WERE IN A CLUSTER ABOUT 60 MILES WEST OF ANDROS ISLAND. BOATERS ARE URGED TO USE EXTREME CAUTION AND SEEK SAFE HARBOR IF POSSIBLE. IF NOT... THEN STAY BELOW DECK AS THESE THUNDERSTORMS ARE LIKELY TO PRODUCE STRONG SURFACE WINDS... VERY ROUGH SEAS... PERIODS OF VERY HEAVY RAIN AND DANGEROUS CLOUD TO WATER LIGHTNING. SCATTERED SHOWERS AND THUNDERSTORMS WERE D*ETECTED ACROSS THE SOUTHEAST GULF OF MEXICO AND THE FLORIDA KEYS. SOME WITH HEAVY RAINFALL. MOVEMENT REMAINED NORTHWEST AT 15 TO 20 MILES AN HOUR. HIGHEST PRECIPITATION TOP WAS 45 THOUSAND FEET OVER THE ATLANTIC WEST OF ANDROS ISLAND.
Special weather statement, Jun 30, 3:38 PM EDT, 22 minutes before
FLZ015>023-302035- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 325 PM EDT SUN JUN 30 1991 ...STRONG THUNDERSTORMS CONTINUE... AT 325 PM MIAMI RADAR INDICATED SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUING OVER MOST ALL THE PENINSULA SOUTH OF A LINE FROM MELBOURNE TO VENICE. STRONGEST THUNDERSTORMS CONTINUED TO PRODUCED VERY HEAVY RAINFALL AND WERE WIDESPREAD ACROSS THE PENINSULA. RESIDENTS SHOULD BE ALERT FOR PERIODS OF HEAVY RAIN... LIGHTNING... AND POSSIBLY STRONG GUSTY SURFACE WINDS DURING THE REMAINDER OF THIS AFTERNOON. OVER THE ATLANTIC.... NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE ATLANTIC FROM EAST OF VERO BEACH TO THE CAY SAL BANK AND ACROSS THE BAHAMAS TO THE EAST. MOST WERE PRODUCING EITHER HEAVY OR VERY HEAVY RAINFALL. STRONGEST THUNDERSTORMS WERE FROM JUST EAST OF MIAMI SOUTH TO DAMAS CAYS AND EAST TO ANDROS ISLAND. BOATERS ARE URGED TO USE EXTREME CAUTION AND SEEK SAFE HARBOR IF POSSIBLE. IF NOT... THEN STAY BELOW DECK AS THESE THUNDERSTORMS ARE LIKELY TO PRODUCE STRONG SURFACE WINDS... VERY ROUGH SEAS... PERIODS OF VERY HEAVY RAIN AND DANGEROUS CLOUD TO WATER LIGHTNING. SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE SOUTHEAST GULF OF MEXICO... FLORIDA BAY AND THE FLORIDA KEYS. SOME WITH HEAVY RAINFALL. MOVEMENT REMAINED NORTHWEST AT 15 TO 20 MILES AN HOUR. HIGHEST PRECIPITATION TOP WAS 49 THOUSAND FEET WEST OF LAKE OKEECHOB1EE IN HIGHLANDS COUNTY.
Special weather statement, Jun 30, 3:50 PM EDT, 10 minutes before
FLZ020-020-302100- SPECIAL WEATHER AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 358 PM EDT SUN JUN 30 1991 ...LARGE AREA OF LIGHT RAIN WITH HEAVIER SHOWERS AND THUNDERSTORMS OVER MARTIN AND PALM BEACH COUNTIES... AT 3:55 PM EDT WEATHER SERVICE RADAR INDICATED THE STRONGEST THUNDERSTORMS OVER SOUTHERN PALM BEACH AND EASTERN MARTIN COUNTY. MOVEMENT OF THESE THUNDERSTORMS WAS TO THE NORTHWEST AT 10 MILES AN HOUR. RESIDENTS OF MARTIN AND PALM BEACH COUNTIES MAY ENCOUNTER GUSTY WINDS...POSSIBLE LOCALIZED FLOODING...HEAVY DOWNPOURS AND DANGEROUS LIGHTNING. MOTORISTS ON ROADWAYS SHOULD ALLOW EXTRA TIME TO ARRIVE SAFELY AT THEIR DESTINATIONS DUE TO PONDING OF WATER ON ROADWAYS AND REDUCED VISIBILITIES. MARINERS ON THE COASTAL WATERS OFFSHORE MARTIN AND PALM BEACH COUNTIES SHOULD BE ALERT FOR THREATENING WEATHER... REDUCED VISIBLITIES...GUSTY WINDS AND ROUGH SEAS. NNNN
Special weather statement, Jun 30, 3:58 PM EDT, 2 minutes before
FLZ020-020-302100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 358 PM EDT SUN JUN 30 1991 ...LARGE AREA OF LIGHT RAIN WITH HEAVIER SHOWERS AND THUNDERSTORMS OVER MARTIN AND PALM BEACH COUNTIES... AT 3:55 PM EDT WEATHER SERVICE RADAR INDICATED THE STRONGEST THUNDERSTORMS OVER SOUTHERN PALM BEACH AND EASTERN MARTIN COUNTY. MOVEMENT OF THESE THUNDERSTORMS WAS TO THE NORTHWEST AT 10 MILES AN HOUR. RESIDENTS OF MARTIN AND PALM BEACH COUNTIES MAY ENCOUNTER GUSTY WINDS...POSSIBLE LOCALIZED FLOODING...HEAVY DOWNPOURS AND DANGEROUS LIGHTNING. MOTORISTS ON ROADWAYS SHOULD ALLOW EXTRA TIME TO ARRIVE SAFELY AT THEIR DESTINATIONS DUE TO PONDING OF WATER ON ROADWAYS AND REDUCED VISIBILITIES. MARINERS ON THE COASTAL WATERS OFFSHORE MARTIN AND PALM BEACH COUNTIES SHOULD BE ALERT FOR THREATENING WEATHER... REDUCED VISIBLITIES...GUSTY WINDS AND ROUGH SEAS. NNNN
Nearby
Tornado Warnings in Florida, 1991Every tornado warning in 1991Tornadoes in 1991
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.