Alert archive / Florida / Flash Flood Warnings in 1991
Flash Flood Warning 2, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Oct 8, 1991, 8:00 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 8, 1991, 8:00 PM EDT (00:00 UTC)
- Expired
- Oct 9, 1991, 2:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Miami, FL
- Area
- Whole counties
Counties Broward County, FL, Miami-Dade County, FL
The nearest sounding before it
Key West, FL (KEYW), launched 00:00Z, 0.0 hours before the alert went out and 193 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
- 1728 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 82 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 082355 FFWMIA BULLETIN-EBS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI, FL 800 PM EDT TUE OCT 08 1991 FLC011-025-090600- FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI FL 800 PM EDT TUE OCT 8 1991 ...A FLOOD WARNING IS EXTENDED UNTIL 200 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...BROWARD COUNTY...DADE COUNTY HEAVY RAINS CONTINUE TO FALL OVER THE IMMEDIATE SOUTHEASTERN COASTAL AREAS OF FLORIDA. THE RESULT HAS BEEN WIDESPREAD SERIOUS STREET AND URBAN FLOODING OVER MUCH OF THE AREA FROM POMPANO BEACH SOUTHWARD TO FORT LAUDERDALE...MIAMI AND HOMESTEAD. RADAR AND SATELLITE OBSERVATIONS SHOW THAT MODERATE TO OCCASIONALLY HEAVY RAINS WILL CONTINUE OVER PORTIONS OF SOUTHEAST FLORIDA FOR THE REMAINDER OF THIS EVENING WITH SOME DECREASE IN THE HEAVIER RAINS AROUND 2AM. RAINFALL AMOUNTS ARE APPROACHING OR EXCEEDING 10 INCHES OVER A WIDER AREA OF EASTERN DADE AND BROWARD COUNTIES. THIS IS PRODUCING SERIOUS FLOOD PROBLEMS WITH SOME TRAILER PARKS IN NORTH DADE COUNTY HAVING BEEN EVACUATED DUE TO HIGH WATER. REPORTS OF 5 FEET OF WATER ARE COVERING AN INTERSECTION WITH SEVERAL CARS FLOATING AT THE INTERSECTION OF FEDERAL HIGHWAY AND STIRLING ROAD IN DANIA JUST SOUTH OF THE FORT LAUDERDALE AIRPORT. DRAINAGE PROBLEMS CONTINUE AT FORT LAUDERDALE AIRPORT WHERE AIRPORT OFFICIALS REPORT SOME TAXIWAYS UNDER WATER. FLOODED STREETS AND LOW LYING AREAS HAVE BECOME MORE OF A PROBLEM THROUGHOUT BOTH EAST DADE AND EAST BROWARD COUNTIES TONIGHT. ADDITIONAL EVACUATIONS ARE POSSSIBLE. RAINS WILL CONTINUE HEAVIEST OVER EASTERN AREAS. RUNOFF WILL BE SLOW WITH STANDING WATER AN INCREASING PROBLEM. STORM DRAINAGE SYSTEMS WILL LIKLELY BE UNABLE TO HANDLE THE RUNOFF IN MOST AREAS WHERE RAINFALL RATES APPROACH ONE INCH PER HOUR. DRIVING WILL BE ESPECIALLY HAZARDOUS WITH SLICK STREETS...LOWERED VISIBILITIES AND WATER COVERED ROADWAYS. AVOID ANY UNNECESSARY TRAVEL. BE CAREFUL OF DRIVING VEHICLES INTO AREAS WHERE WATER COVERS THE ROADWAY. WATER DEPTHS MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY OR WITHOUT BECOMING STALLED.
What forecasters said that day
The local office's own words before this flash flood 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, Oct 8, 2:42 PM EDT, 5 hours 18 minutes before
FLZ015>023-041945- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 245 PM EDT TUE OCT 8 1991 ...STRONG THUNDERSTORMS OVER SOUTHERN DADE COUNTY... ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 225 PM MIAMI RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER SOUTHERN DADE COUNTY. THESE STORMS WERE EMBEDDED IN A LARGE AREA OF RAINFALL THAT COVERDED MUCH OF DADE...BROWARD AND PALM BEACH COUNTIES AND EXTENDED EAST TO THE NORTHERN AND WESTERN BAHAMAS. RESIDENTS OF SOUTHERN DADE COUNTY SHOULD BE ALERT FOR STRONG GUSTY WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES AND REDUCED VISIBILITIES IN VERY HEAVY RAINFALL AS THESE STORM MOVE WEST SOUTHWEST NEAR 10 MILES AN HOUR. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS NEARLY STATIONARY WITH THE INDIVIDUAL THUNDERSTORMS MOVING WEST AT 10 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF TORRENTIAL RAINFALL...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS IS OCCURING IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAY TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. ELSEWHERE...SCATTERED SHOWERS EXTENDED FROM THE SOUTHERN BIMINIS TO THE CAY SAL BANK. ANOTHER AREA OF SCATTERED SHOWERS WAS LOCATED FROM THE FLORIDA STRAITS...ACROSS THE LOWER KEYS TO 15 MILES SOUTH OF CAPE ROMANO. MOVEMENT WAS WEST AT 10 MILES AN HOUR. H THE MAXIMUM PRECIPITATION TOP WAS 52 THOUSAND FEET...LOCATED 10 MILES EAST OF HOMESTEAD.
Special weather statement, Oct 8, 3:34 PM EDT, 4 hours 26 minutes before
FLZ015>023-042035- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 335 PM EDT TUE OCT 8 1991 ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 325 PM MIAMI RADAR CONTINUED TO INDICATE A LARGE AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS...MANY WITH VERY HEAVY RAINFALL...COVERED MUCH OF DADE...BROWARD AND PALM BEACH COUNTIES. THIS AREA EXTENDED INTO CENTRAL HENDRY COUNTY AND EAST...ACROSS THE ATLANTIC...TO THE NORTHERN BAHAMAS. RAINFALL HAD DECREASED IN INTENSITY OVER BROWARD COUNTY OVER THE PAST HOUR...HOWEVER THE POTENTIAL EXISTS FOR HEAVY RAINFALL TO RETURN LATER THIS AFTERNOON. RAINFALL CONTINUED LOCALLY HEAVY OVER DADE COUNTY. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS DRIFTING SLOWLY SOUTHWEST WITH THE INDIVIDUAL THUNDERSTORMS MOVING WEST AT 10 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF PRECIPITATION...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS CONTINUES IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAY TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. ELSEWHERE...SCATTERED SHOWERS CONTINUED FROM THE SOUTHERN BIMINIS TO THE CAY SAL BANK. ANOTHER AREA OF SCATTERED SHOWERS WAS LOCATED ALONG THE MIDDLE AND LOWER KEYS AND EXTENDED NORTH TO 20 MILES SOUTH OF CAPE ROMANO. MOVEMENT WAS WEST AT 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 43 THOUSAN:D FEET...LOCATED 5 MILES EAST OF KEY BISCAYNE.
Special weather statement, Oct 8, 4:42 PM EDT, 3 hours 18 minutes before
FLZ015>023-042140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 440 PM EDT TUE OCT 8 1991 ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 425 PM MIAMI RADAR CONTINUED TO INDICATE A LARGE AREA OF RAIN WITH WIDELY SCATTERED EMBEDDED THUNDERSTORMS...MANY WITH VERY HEAVY RAINFALL...COVERED MUCH OF DADE...BROWARD AND PALM BEACH COUNTIES. THIS AREA EXTENDED INTO CENTRAL HENDRY COUNTY AND EAST...ACROSS THE ATLANTIC...TO THE NORTHERN BAHAMAS. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS DRIFTING SLOWLY SOUTHWEST WITH THE INDIVIDUAL THUNDERSTORMS MOVING WEST AT 5 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF PRECIPITATION...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS CONTINUES IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAYBE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. ELSEWHERE...SCATTERED SHOWERS CONTINUED FROM NEAR THE SOUTHERN BIMINIS TO THE CAY SAL BANK AND ANDROS ISLAND. WIDELY SCATTERED SHOWERS EXTENDED FROM NEAR IMMOKALEE TO EVERGLADES CITY SOUTH OVER THE GULF TO JUST OFFSHORE THE MIDDLE AND LOWER KEYS. ISOLATED SHOWERS WERE JUST WEST OF LAKE OKEECHOBEE AND 10 MILES SOUTH OF BIG PINE KEY. MOVEMENT WAS WEST AT 5 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 44 THOUSAND FEET JUST EAST OF FLORIDA CITY.
Special weather statement, Oct 8, 5:45 PM EDT, 2 hours 15 minutes before
FLZ015>023-042240- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 540 PM EDT TUE OCT 8 1991 ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 529 PM MIAMI RADAR CONTINUED TO INDICATE AREAS OF RAIN WITH WIDELY SCATTERED EMBEDDED THUNDERSTORMS...MANY WITH VERY HEAVY RAINFALL...EXTENDED FROM WEST PALM BEACH TO JUST SOUTHWEST OF LAKE OKEECHOBEE SOUTH TO COLLIER AND DADE COUNTIES. THE AREA EXTENDED OVER THE ATLANTIC TO THE NORTHERN AND WESTERN BAHAMAS AND JUST NORTH OF THE CAY SAL BANK. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS DRIFTING SLOWLY SOUTHWEST WITH THE INDIVIDUAL THUNDERSTORMS MOVING WEST AT 5 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF PRECIPITATION...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS CONTINUES IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAYBE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. A FEW SHOWERS EXTENDED FROM THE MARQUESAS KEYS NORTHWARD FOR 40 MILES. MOVEMENT WAS WEST AT 5 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 42 THOUSAND FEET JUST EAST OF KEY LARGO.
Special weather statement, Oct 8, 6:43 PM EDT, 1 hour 17 minutes before
FLZ015>023-042340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 640 PM EDT TUE OCT 8 1991 ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 630 PM MIAMI RADAR CONTINUED TO INDICATE AREAS OF RAIN WITH WIDELY SCATTERED EMBEDDED THUNDERSTORMS...A FEW WITH VERY HEAVY RAINFALL...EXTENDED FROM WEST PALM BEACH TO JUST WEST OF LAKE OKEECHOBEE SOUTH TO EASTERN MAINLAND MONROE AND DADE COUNTIES. THE AREA EXTENDED OVER THE ATLANTIC TO THE NORTHERN AND WESTERN BAHAMAS AND THE CAY SAL BANK. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS DRIFTING SLOWLY SOUTHWEST WITH THE INDIVIDUAL THUNDERSTORMS MOVING WEST AT 5 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF PRECIPITATION...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS CONTINUES IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAYBE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. WIDELY SCATTERED SHOWERS EXTENDED FROM THE MARQUESAS KEYS NORTHWARD FOR 70 MILES AND WEST TO NEAR THE DRY TORTUGAS. MOVEMENT WAS WEST AT 5 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 31 THOUSAND FEET OVER THE FLjORIDA STRAITS... 25 MILES EAST OF ISLAMORADA.
Special weather statement, Oct 8, 7:43 PM EDT, 17 minutes before
FLZ015>023-050040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 740 PM EDT TUE OCT 8 1991 ...FLOOD WARNING IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM... AT 729 PM MIAMI RADAR CONTINUED TO INDICATE AREAS OF RAIN WITH WIDELY SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAINFALL...EXTENDED FROM JUST EAST OF LAKE OKEECHOBEE SOUTH TO DADE COUNTY AND THE UPPER KEYS. THE AREA ALSO EXTENDED INTO SOUTHEASTERN COLLIER AND MAINLAND MONROE COUNTIES AND OVER THE ATLANTIC TO THE NORTHERN AND WESTERN BAHAMAS AND OVER THE FLORIDA STRAITS OFFSHORE THE MIDDLE AND LOWER KEYS. THE AREA OF OCCASIONALLY HEAVY RAINFALL WAS DRIFTING SLOWLY SOUTHEAST WITH THE INDIVIDUAL THUNDERSTORMS MOVING SOUTHWEST AT 5 MILES AN HOUR. DUE TO THE PROLONGED PERIOD OF PRECIPITATION...WIDESPREAD FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS CONTINUES IN SOUTHEAST FLORIDA. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS ABOUT DRIVING OVER COVERED ROADWAYS. WATER DEPTHS MAYBE TOO GREAT TO ALLOW YOUR VEHICLE TO CROSS SAFELY. WIDELY SCATTERED SHOWERS EXTENDED FROM THE MARQUESAS KEYS TO NEAR THE DRY TORTUGAS. MOVEMENT WAS WEST AT 5 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 43 THOUSAND FEET OVER KEY LARGO.
Nearby
Flash Flood Warnings in Florida, 1991Every flash flood warning 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.