Alert archive / Florida / Flash Flood Warnings in 1999
Flash Flood Warning 5, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Sep 20, 1999, 7:10 PM EDT for Collier County, Florida. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 20, 1999, 7:10 PM EDT (23:10 UTC)
- Expired
- Sep 20, 1999, 10:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Collier County, FL
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 11.2 hours before the alert went out and 113 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
- 281 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 202314 FFWMIA FLC021-210200- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI FL 710 PM EDT MON SEP 20 1999 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * FLOOD WARNING FOR... WESTERN COLLIER COUNTY IN SOUTHWESTERN FLORIDA * UNTIL 1000 PM EDT * AT 705 PM MIAMI DOPPLER RADAR INDICATED STRONG THUNDERSTORMS MOVING EAST AT 15 MPH THROUGH THE NAPLES AREA. THESE STORMS WERE PRODUCING TORRENTIAL RAINFALL OVER AN AREA THAT HAS ALREADY RECEIVED THREE TO SIX INCHES OF RAIN IN THE PAST FEW HOURS. ADDITIOANL RAINFALL OF TWO TO THREE INCHES THIS EVENING WILL PRODUCE FLOODING CONDITIONS ESPECIALLY IN LOW SPOTS. MOTORISTS SHOULD USE EXTREME CAUTION DRIVING ALONG THE ROADWAYS THROUGHOUT THE AREA. THESE CONDITIONS ARE EXPECTED TO CONTINUE THROUGH LATE EVENING AND MAY HAVE TO BE EXTENDED. RAINFALL IS EXPECTED TO CONTINUE THROUGH THE NIGHT INTO TUESDAY MORNING WITH TOTALS APPROACHING TEN INCHES IN SOME LOCATIONS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
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, Sep 20, 2:15 PM EDT, 4 hours 55 minutes before
FLZ071>074-192300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 215 PM EDT MON SEP 20 1999 ...TROPICAL STORM WATCH LAKE OKEECHOBEE... ...HIGH WIND WATCH GLADES AND HENDRY COUNTIES TONINGHT AND TUESDAY... ...FLOOD WATCH ALL OF MAINLAND SOUTH FLORIDA THROUGH TUESDAY... AS TROPICAL STORM HARVEY INTENSIFIES AND MOVES TOWARD THE WEST COAST OF CENTRAL FLORIDA...ABUNDANT TROPICAL MOISTURE WILL FLOW INTO SOUTH FLORIDA. THIS WILL RESULT IN HEAVY RAINS OF 2 TO 4 INCHES WITH LOCALLY HEAVIER AMOUNTS UP TO 10 INCHES POSSIBLE. THIS WILL RESULT IN FLOODINGS OF LOW LYING AREAS. STRONG WINDS ARE ALSO POSSIBLE AND A TROPICAL STORM WATCH IS IN EFFECT FOR LAKE OKEECHOBEE WITH A HIGH WIND WATCH FOR GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY. SPOTTER ACTIVATION IS COULD BE POSSIBLE TONIGHT AND TUESDAY. ESPOSITO
Special weather statement, Sep 20, 2:15 PM EDT, 4 hours 55 minutes before
FLZ071>074-202300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE MIAMI FL 215 PM EDT MON SEP 20 1999 ...TROPICAL STORM WATCH LAKE OKEECHOBEE... ...HIGH WIND WATCH GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY... ...FLOOD WATCH ALL OF MAINLAND SOUTH FLORIDA THROUGH TUESDAY... AS TROPICAL STORM HARVEY INTENSIFIES AND MOVES TOWARD THE WEST COAST OF CENTRAL FLORIDA...ABUNDANT TROPICAL MOISTURE WILL FLOW INTO SOUTH FLORIDA. THIS WILL RESULT IN HEAVY RAINS OF 2 TO 4 INCHES WITH LOCALLY HEAVIER AMOUNTS UP TO 10 INCHES POSSIBLE. THIS WILL RESULT IN FLOODINGS OF LOW LYING AREAS. STRONG WINDS ARE ALSO POSSIBLE AND A TROPICAL STORM WATCH IS IN EFFECT FOR LAKE OKEECHOBEE WITH A HIGH WIND WATCH FOR GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY. SPOTTER ACTIVATION IS COULD BE POSSIBLE TONIGHT AND TUESDAY. ESPOSITO
Special weather statement, Sep 20, 2:15 PM EDT, 4 hours 55 minutes before
FLZ071>074-192300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 215 PM EDT MON SEP 20 1999 ...TROPICAL STORM WATCH LAKE OKEECHOBEE... ...HIGH WIND WATCH GLADES AND HENDRY COUNTIES TONINGHT AND TUESDAY... ...FLOOD WATCH ALL OF MAINLAND SOUTH FLORIDA THROUGH TUESDAY... AS TROPICAL STORM HARVEY INTENSIFIES AND MOVES TOWARD THE WEST COAST OF CENTRAL FLORIDA...ABUNDANT TROPICAL MOISTURE WILL FLOW INTO SOUTH FLORIDA. THIS WILL RESULT IN HEAVY RAINS OF 2 TO 4 INCHES WITH LOCALLY HEAVIER AMOUNTS UP TO 10 INCHES POSSIBLE. THIS WILL RESULT IN FLOODINGS OF LOW LYING AREAS. STRONG WINDS ARE ALSO POSSIBLE AND A TROPICAL STORM WATCH IS IN EFFECT FOR LAKE OKEECHOBEE WITH A HIGH WIND WATCH FOR GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY. SPOTTER ACTIVATION IS COULD BE POSSIBLE TONIGHT AND TUESDAY. ESPOSITO
Special weather statement, Sep 20, 2:15 PM EDT, 4 hours 55 minutes before
FLZ071>074-202300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE MIAMI FL 215 PM EDT MON SEP 20 1999 ...TROPICAL STORM WATCH LAKE OKEECHOBEE... ...HIGH WIND WATCH GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY... ...FLOOD WATCH ALL OF MAINLAND SOUTH FLORIDA THROUGH TUESDAY... AS TROPICAL STORM HARVEY INTENSIFIES AND MOVES TOWARD THE WEST COAST OF CENTRAL FLORIDA...ABUNDANT TROPICAL MOISTURE WILL FLOW INTO SOUTH FLORIDA. THIS WILL RESULT IN HEAVY RAINS OF 2 TO 4 INCHES WITH LOCALLY HEAVIER AMOUNTS UP TO 10 INCHES POSSIBLE. THIS WILL RESULT IN FLOODINGS OF LOW LYING AREAS. STRONG WINDS ARE ALSO POSSIBLE AND A TROPICAL STORM WATCH IS IN EFFECT FOR LAKE OKEECHOBEE WITH A HIGH WIND WATCH FOR GLADES AND HENDRY COUNTIES TONIGHT AND TUESDAY. SPOTTER ACTIVATION IS COULD BE POSSIBLE TONIGHT AND TUESDAY. ESPOSITO
Local storm report, Sep 20, 6:37 PM EDT, 33 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
637 PM EDT MON SEP 20 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0510 PM NAPLES FL TORNADO
09/20/99 COLLIER UNCONFIRMED TORNADO AT
PARADISE POINT WITH ROOF
BLOWN OFF A HOUSE.Nearby
Flash Flood Warnings in Florida, 1999Every flash flood warning in 1999
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.