Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Miami, FL

April 12, 1997Collier County, Florida

NWS Miami, FL issued this flash flood warning at Apr 12, 1997, 10:40 AM EDT for Collier County, Florida. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 12, 1997, 10:40 AM EDT (14:40 UTC)
Expired: Apr 12, 1997, 12:30 PM EDT
In force: 110 min
Issued by: NWS Miami, FL
Area: Whole counties

County Collier County, FL

The radar

The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 14:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 2.7 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 842 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMIA 121442
FFWMIA
FLC021-121630-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1040 AM EDT SAT APR 12 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1230 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHWEST FLORIDA
 
   ...SOUTHWESTERN COLLIER COUNTY
 
THE VERY HEAVY RAINS WHICH AFFECTED SOUTHWESTERN COLLIER COUNTY EARLIER
THIS MORNING HAVE TAPERED OFF. DOPPLER RADAR HAS ESTIMATED OVER 4 INCHES
OF RAIN HAS FALLEN IN THE MARCO ISLAND AREA THIS MORNING...AND REPORTS
FROM THAT AREA CONTINUE TO INDICATE WIDESPREAD STREET FLOODING.
 
ALTHOUGH THE RAIN HAS TAPERED OFF...FLOOD WATERS WILL BE SLOW TO RECEDE.
RESIDENTS...PARTICULARLY MOTORISTS...SHOULD CONTINUE TO USE EXTREME
CAUTION THROUGH THE REMAINDER OF THE MORNING.
 
ADDITIONAL STATEMENTS AND/OR WARNINGS WILL BE ISSUED AS CONDITIONS
WARRANT.
 
STREET FLOODING WILL BE A PROBLEM IN THOSE AREAS THAT HAVE RECEIVED
HEAVY RAINS.  IF YOU ARE DRIVING...REDUCE YOUR SPEED IN AREAS OF RESTRIC
DVISIBILITIES AND AVOID PONDING WATER IN STREETS...UNDERPASSES AND OTH
LOW LYING AREAS WHERE DRAINAGE IS POOR. DO NOT ALLOW CHILDREN TO PLAY
IN FLOOD WATERS...THEY MAY BE CONTAMINATED.
 
URBAN FLOODING IS OCCURRING IN THE FLOOD PRONE AREAS AND PEOPLE
SHOULD NOT DRIVE ACROSS RISING WATER ON STREETS AND UNDERPASSES.
 
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.

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 5:09 AM EDT	Severe Thunderstorm Warning	MFL	Collier	66 min
Apr 12, 6:14 AM EDT	Tornado Warning	MFL	Collier, Monroe	61 min
Apr 12, 7:53 AM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	67 min
Apr 12, 8:20 AM EDT	Flash Flood Warning	MFL	Collier	115 min

Nearby

Flash Flood Warnings in Florida, 1997 Every flash flood warning in 1997

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; radar from the NEXRAD Level II archive.