Alert archive / Florida / Flash Flood Warnings in 1991
Flash Flood Warning 1, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Oct 8, 1991, 1:00 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Oct 8, 1991, 1:00 PM EDT (17:00 UTC)
- Expired
- Oct 8, 1991, 8:00 PM EDT
- In force
- 7 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 12:00Z, 5.0 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
- 1370 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 80 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 081700 FFWMIA BULLETIN-EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI, FL 100 PM EDT TUE OCT 08 1991 FLC011-025-090000- FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI FL 100 PM EDT TUE OCT 8 1991 ...A FLOOD WARNING IS IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 800 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...BROWARD COUNTY...DADE COUNTY EXTREMLY 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 AFTERNOON WITH SOME DECREASE IN THE HEAVIER RAINS TOWARD NIGHTFALL. 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 BEING 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 WILL LIKELY BECOME MORE OF A PROBLEM THROUGHOUT BOTH DADE AND BROWARD COUNTIES THIS AFTERNOON. ADDITIONAL EVACUATIONS ARE EXPECTED. RAINS WILL BE HEAVIEST OVER EASTERN AREAS. RUNOFF WILL BE SLOW WITH STANDING WATER AN INCREASING PROBLEM. STORM DRAINAGE SYSTEMS WILL 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 WATERS COVERED ROADWAYS. EXPECT PROLONGED TRAFFIC DELAYS SO PLANS SHOULD BE MADE TO TRAVEL EARLY OR 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 STALlLED.
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, 7:47 AM EDT, 5 hours 13 minutes before
FLZ015>023-041245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 745 AM EDT TUE OCT 8 1991 ...HEAVY RAINFALL CONTINUES OVER SOUTHEAST FLORIDA... AT 725 AM MIAMI RADAR CONTINUED TO INDICATE NUMEROUS STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER DADE AND BROWARD COUNTIES. THESE STORMS WERE EMBEDED IN AN AREA OF RAIN THAT EXTENDED FROM EASTERN COLLIER COUNTY AND WESTERN DADE COUNTY...EAST TO THE BIMINIS AND GRAND BAHAMA ISLAND. THIS AREA WAS MOVING SOUTH AT 10 MILES AN HOUR. MORNING COMMUTERS IN DADE AND BROWARD COUNTIES SHOULD ALLOW EXTRA TIME TO REACH THEIR DESTINATIONS DUE TO STANDING WATER COLLECTING ON POORLY DRAINED ROADWAYS. THE HEAVIER PRECIPITATION WILL CONTINUE TO AFFECT THE AREA FOR THE NEXT SEVERAL HOURS. ELSEWHERE...WIDELY SCATTERED SHOWERS AND THUNDESTORMS WERE OVER THE FLORIDA STRAITS. MOVEMENT WAS SOUTH AT 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 51 THOUSAND FEET...LOCATED 10 MILES NORTHEAST OF ELLIOT KEY. COUNTY.
Special weather statement, Oct 8, 8:44 AM EDT, 4 hours 16 minutes before
FLZ015>023-041345- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 845 AM EDT TUE OCT 8 1991 ...HEAVY RAINFALL CONTINUES OVER EASTERN DADE AND EASTERN BROWARD COUNTIES... AT 825 AM MIAMI RADAR INDICATED AN AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER EASTERN DADE AND EASTERN BROWARD COUNTIES. THIS AREA OF RAINFALL EXTENDED EAST...ACROSS THE ATLANTIC TO THE NORTHERN AND WESTERN BAHAMAS AND WAS MOVING SLOWLY SOUTH AT 5 TO 10 MILES AN HOUR. RAINFALL HAS BEEN VERY HEAVY OVER THE MIAMI/FT LAUDERDALE METROPOLITAN AREA OVER THE PAST SEVERAL HOURS AND WITH THE RAIN CONTINUING...STANDING WATER COLLECTING ON POORLY DRAINED ROADWAYS WILL REMAIN A PROBLEM. MOTORISTS SHOULD ALLOW EXTRA TIME TO REACH THEIR DESTINATIONS THIS MORNING. ELSEWHERE...SCATTERED SHOWERS WERE LOCATED OVER EASTERN COLLIER...WESTERN DADE...WESTERN BROWARD AND EXTREME SOUTHWESTERN PALM BEACH COUNTIES. SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY RAINFALL...EXTENDED FROM THE SOUTHERN BIMINIS...OVER THE FLORIDA STRAITS...TO 40 MILES SOUTH OF KEY WEST. MOVEMENT WAS SOUTH AT 5 TO 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS :57 THOUSAND FEET...LOCATED 30 MILES EAST OF ELLIOT KEY.
Special weather statement, Oct 8, 9:41 AM EDT, 3 hours 19 minutes before
FLZ015>023-041440- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 940 AM EDT TUE OCT 8 1991 ...URBAN FLOOD ADVISORY REMAINS IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 1045 AM EDT... AT 925 AM MIAMI RADAR INDICATED A LARGE AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING OVER EASTERN DADE AND EASTERN BROWARD COUNTIES. THE HEAVIEST RAINFALL WAS ALONG THE IMMEDIATE COASTAL SECTIONS. THIS AREA OF RAINFALL EXTENDED EAST...ACROSS THE ATLANTIC TO THE BIMINI ISLANDS AND GRAND BAHAMA ISLAND AND WAS MOVING SLOWLY SOUTH AT 5 TO 10 MILES AN HOUR. RAINFALL HAS BEEN VERY HEAVY OVER THE MIAMI/FORT LAUDERDALE METROPOLITAN AREA OVERNIGHT AND THIS MORNING AND WITH THE RAIN CONTINUING...STANDING WATER COLLECTING IN LOW LYING AREAS AND ON POORLY DRAINED ROADWAYS WILL REMAIN A PROBLEM TODAY...PARTICULARLY OVER EASTERN DADE AND BROWARD COUNTIES. ELSEWHERE...PATCHES OF LIGHT RAIN CONTINUED OVER EASTERN COLLIER...WESTERN DADE...WESTERN BROWARD AND SOUTHEASTERN HENDRY COUNTIES. SCATTERED SHOWERS AND THUNDERSTORMS...A FEW VERY HEAVY RAINFALL...EXTENDED FROM THE SOUTHERN BIMINIS...SOUTHWEST OVER THE FLORIDA STRAITS...AND SOUT-H TO THE CAY SAL BANK. MOVEMENT WAS SOUTH AT 5 TO 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 44 THOUSAND FEET...LOCATED 5 MILES NORTHWEST OF FORT LAUDERDALE.
Special weather statement, Oct 8, 10:36 AM EDT, 2 hours 24 minutes before
FLZ015>023-041535- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 1035 AM EDT TUE OCT 8 1991 ...URBAN FLOOD ADVISORY REMAINS IN EFFECT FOR BROWARD AND DADE COUNTIES... AT 1025 AM MIAMI RADAR CONTINUED TO INDICATE AN AREA OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS...MOST WITH VERY HEAVY RAINFALL...OVER COASTAL SECTIONS OF SOUTHEAST FLORIDA. THE HEAVIEST RAINFALL WAS OVER CENTRAL BROWARD AND NORTHEASTERN DADE COUNTIES. THE AREA OF RAIN EXTENDED ACROSS THE ATLANTIC TO THE BERRY ISLANDS. THIS AREA OF PRECIPITATION WAS ONLY SLOWLY DRIFTING SOUTH AT NEAR 5 MILES AN HOUR AND WILL CONTINUE TO PRODUCE LOCALIZED FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS WHEN DRIVING INTO STANDING WATER. THE INDIVIDUAL THUNDERSTORMS WERE MOVING SOUTHWEST AT 5 TO 10 MILES AN HOUR. ELSEWHERE...SCATTERED SHOWERS WERE LOCATED OVER THE SOUTHEASTERN GULF AND THE CAY SAL BANK. ISOLATED SHOWERS WERE LOCATED OVER SOUTHERN PALM BEACH AND SOUTHEASTERN HENDRY COUNTIES. MOVEMENT WAS SOUTHWEST AT 5 TO 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 40 THOUSAND FEET...LOCATED 15 MILES WEST OF FORT LAUDERDALE.
Special weather statement, Oct 8, 11:47 AM EDT, 1 hour 13 minutes before
FLZ015>023-041645- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 1145 AM EDT TUE OCT 8 1991 ...URBAN FLOOD ADVISORY REMAINS IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 100 PM EDT... AT 1125 AM MIAMI RADAR INDICATED LARGE AREAS OF RAIN WITH SCATTERED EMBEDDED THUNDERSTORMS...MANY WITH VERY HEAVY RAINFALL...CONTINUED FROM DADE AND BROWARD COUNTIES EAST TO THE BERRY ISLANDS. THE HEAVIEST RAINFALL WAS OVER NORTHERN BROWARD COUNTY. THESE AREAS OF PRECIPITATION WERE NEARLY STATIONARY WITH THE INDIVIDUAL THUNDERSTORMS MOVING SOUTHWEST AT 5 TO 10 MILES AN HOUR. MOTORISTS AND RESIDENTS OF DADE AND BROWARD COUNTIES SHOULD CONTINUE TO BE AWARE OF THE POTENTIAL FOR LOCALIZED FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS WHEN DRIVING INTO STANDING WATER. ELSEWHERE...SCATTERED SHOWERS WERE DEVELOPING OVER HENDRY AND PALM BEACH COUNTIES. SCATTERED SHOWERS WERE LOCATED OVER THE SOUTHEASTERN GULF OF MEXICO AND FROM THE SOUTHERN BIMINIS TO THE CAY SAL BANK. MOVEMENT WAS SOUTHWEST AT 5 TO 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 37 THOUSAND FEET...LOCATED 20 MILES WEST OF POMPANO BEACH.
Special weather statement, Oct 8, 12:41 PM EDT, 19 minutes before
FLZ015>023-041740- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 1240 PM EDT TUE OCT 8 1991 ...URBAN FLOOD ADVISORY IN EFFECT FOR BROWARD AND DADE COUNTIES UNTIL 100 PM.. AT 1227 PM MIAMI RADAR CONTINUED TO INDICATED LARGE AREAS OF RAIN FROM DADE ...BROWARD AND SOUTHERN PALM BEACH COUNTIES...EAST TO THE NORTHERN BAHAMAS. SCATTERED THUNDERSTORMS REMAINED EMBEDDED IN THE PRECIPITATION AND WERE PRODUCING VERY HEAVY RAINFALL. THE HEAVIEST RAINFALL WAS OCCURING ALONG THE BROWARD/PALM BEACH COUNTY BORDER AND OVER CENTRAL DADE COUNTY. THESE AREAS OF PRECIPITATION WERE NEARLY STATIONARY WITH THE INDIVIDUAL THUNDERSTORMS MOVING SOUTHWEST AT 5 TO 10 MILES AN HOUR. MOTORISTS AND RESIDENTS OF DADE AND BROWARD COUNTIES SHOULD CONTINUE TO BE AWARE OF THE POTENTIAL FOR LOCALIZED FLOODING OF LOW LYING AREAS AND POORLY DRAINED ROADWAYS. MOTORISTS SHOULD BE EXTREMELY CAUTIOUS WHEN DRIVING INTO STANDING WATER. ELSEWHERE...SCATTERED SHOWERS EXTENDED FROM JUST NORTH OF KEY WEST TO 15 MILES SOUTHWEST OF CAPE ROMANO. ISOLATED SHOWERS WERE OVER HENDRY AND EASTERN COLLIER COUNTIES...AND BETWEEN THE SOUTHERN BIMINIS AND THE CAY SAL BANK. MOVEMENT WAS SOUTHWEST AT 5 TO 10 MILES AN HOUR. THE MAXIMUM PRECIPITATION TOP WAS 43 THOUSAND FEET...LOCATED NEAR TAMIAMI AIRPORT.
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.