Alert archive / Florida / Flash Flood Warnings in 1999
Flash Flood Warning 6, NWS Miami, FL
NWS Miami, FL issued this flash flood warning at Sep 20, 1999, 10:00 PM EDT for Collier County, Florida. It was in force for 5 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, 10:00 PM EDT (02:00 UTC)
- Expired
- Sep 21, 1999, 3:00 AM EDT
- In force
- 5 hr
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Collier County, FL
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 2.0 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
- 841 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 899 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 210201 FFWMIA FLC021-210700- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE MIAMI FL 1000 PM EDT MON SEP 20 1999 THE NATIONAL WEATHER SERVICE IN MIAMI HAS EXTENDED A * FLOOD WARNING FOR... WESTERN COLLIER COUNTY IN SOUTHWESTERN FLORIDA * UNTIL 300 AM EDT * AT 955 PM MIAMI DOPPLER RADAR CONTINUED TO INDICATE HEAVY RAINFALL FALLING IN THE NAPLES AREA. COLLIER COUNTY EMERGENCY MANAGEMENT HAS REPORTED THAT MORE THAN FIVE INCHES OF RAINFALL HAS OCCURRED OVER WESTERN COLLIER COUNTY WITH MORE THAN EIGHT INCHES BEING OBSERVED AT EAST NAPLES. MANY ROADS IN THE AREA HAVE BEEN CLOSED. SOME OF THE MORE MAJOR ROADS THAT REMAIN CLOSED AS OF 10 PM ARE US 41 FROM SHADOWLAWN DRIVE TO PALM DRIVE...AIRPORT ROAD FROM US 41 TO DAVIS BLVD...AND THE INTERSECTION AT GOLDEN GATE PARKWAY AND 55TH STREET SW. SEVERAL OTHER LOCATIONS ARE OPEN TO TRAVEL AND EITHER CONSIDERED FLOODED BUT PASSABLE OR HAZARDOUS FOR TRAVEL. MOTORISTS IN THIS AREA SHOULD AVOID TRAVEL IF AT ALL POSSIBLE. TRAVEL IS DANGEROUS WITH FLOODING CONDITIONS DIFFICULT TO SEE IN THE DARK. ADDITIONAL HEAVY RAINFALL IS STILL LIKELY THROUGHOUT THE NIGHT INTO TUESDAY MORNING WITH FLOODED ROADWAYS BEING SLOW TO RECEDE. 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. URBAN FLOODING IS OCCURRING IN THE FLOOD-PRONE AREAS. MOTORISTS SHOULD NOT DRIVE ACROSS RISING WATER ON STREETS AND UNDERPASSES.
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
Local storm report, Sep 20, 6:37 PM EDT, 3 hours 23 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.The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 3:00 AM EDT | Flash Flood Warning | MFL | Collier | 9 hr |
| Sep 21, 4:50 AM EDT | Tornado Warning | MFL | Broward, Miami-Dade | 40 min |
| Sep 21, 5:27 AM EDT | Tornado Warning | MFL | Broward | 43 min |
| Sep 21, 5:59 AM EDT | Tornado Warning | MFL | Miami-Dade | 31 min |
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.