Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 9, NWS Miami, FL

June 11, 1997Monroe County, Florida

NWS Miami, FL issued this flash flood warning at Jun 11, 1997, 6:28 PM EDT for Monroe County, Florida. It was in force for 2 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
Jun 11, 1997, 6:28 PM EDT (22:28 UTC)
Expired
Jun 11, 1997, 8:30 PM EDT
In force
2 hr
Issued by
NWS Miami, FL
Area
Whole counties

County Monroe County, FL

The radar

The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 22:28 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, 10.5 hours before the alert went out and 69 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-pSkew-T log-p diagram, Miami, FL at 12:00Z on 1997-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2221 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 1997-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2221 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 112229
FFWMIA
FLC087-120030-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
628 PM EDT WED JUN 11 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  830 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTH FLORIDA
 
   ...MIDDLE FLORIDA KEYS
 
AT 620 PM...KEY WEST DOPPLER RADAR INDICATED BETWEEN 4 AND 6 INCHES
OF RAIN HAS FALLEN BETWEEN THE SEVEN MILE BRIDGE AND CRAIG KEY.
REPORTS FROM MONROE COUNTY EMERGENCY MANAGEMENT REPORTED WIDESPREAD
FLOODING WAS OCCURRING NEAR MARATHON. MOTORISTS SHOULD EXERCISE
EXTREME CAUTION AND SHOULD AVOID FLOODED ROADWAYS AND LOW LYING
THROUGHOUT THE MIDDLE KEYS.
 
RADAR INDICATES ADDITIONAL RAINFALL OF 2 TO 4 INCHES IS POSSIBLE
OVER THE MIDDLE KEYS THROUGH 830 PM.
 
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.

IssuedProductOfficeCountiesLasted
Jun 11, 5:06 PM EDTSevere Thunderstorm WarningMFLGlades59 min
Jun 11, 5:37 PM EDTSevere Thunderstorm WarningMFLGlades48 min
Jun 11, 6:18 PM EDTSevere Thunderstorm WarningMFLHendry, Palm Beach57 min

Nearby

Flash Flood Warnings in Florida, 1997Every 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.