Alert archive / Florida / Flash Flood Warnings in 1999

Flash Flood Warning 3, NWS Miami, FL

June 8, 1999Broward County, Palm Beach County, Florida

NWS Miami, FL issued this flash flood warning at Jun 8, 1999, 8:55 AM EDT for Broward County, Palm Beach 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
Jun 8, 1999, 8:55 AM EDT (12:55 UTC)
Expired
Jun 8, 1999, 12:00 PM EDT
In force
3 hr
Issued by
NWS Miami, FL
Area
Whole counties

Counties Broward County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 88 km from the middle of the area, began a volume at 12:57 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, 0.9 hours before the alert went out and 66 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 1999-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1115 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 1999-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.1939Sfc1 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
1115 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
679 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
33 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 081253
FFWMIA
FLC011-099-081600-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
855 AM EDT TUE JUN 8 1999

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLOOD WARNING FOR...
  PALM BEACH COUNTY IN SOUTHEASTERN FLORIDA
  NORTHERN BROWARD COUNTY IN SOUTHEASTERN FLORIDA

* UNTIL 1200 PM EDT

* DOPPLER RADAR AT THE WEATHER SERVICE IN MIAMI IS SHOWING HEAVY
  RAIN ALONG WITH EMBEDDED SHOWERS AND THUNDERSTORMS MOVING INTO
  PALM BEACH AND THE NORTHERN HALF OF BROWARD COUNTY. RAINFALL IN
  EXCESS OF 3 TO 4 INCHES IS POSSIBLE IN PALM BEACH COUNTY AND
  NORTHERN BROWARD COUNTY THROUGH NOON.  THIS ADDITIONAL RAIN WILL
  CAUSE FLOODING PROBLEMS ON AN AREA THAT HAS ALREADY
  RECEIVED SUBSTANTIAL RAINS DURING THE PAST 24 HOURS.

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

Special weather statement, Jun 8, 5:30 AM EDT, 3 hours 25 minutes before
FLZ063-066>075-082200-

SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MIAMI FL
530 AM EDT TUE JUN 8 1999

NUMEROUS SHOWERS ALONG WITH A FEW THUNDERSTORMS ARE EXPECTED OVER
ALL OF SOUTH FLORIDA TODAY. WHILE NO SEVERE THUNDERSTORMS ARE
EXPECTED... THE SLOW MOVEMENT OF THIS PRECIPITATION WILL MEAN
PERIODS OF LOCALLY HEAVY RAINFALL ARE POSSIBLE.

RIP CURRENTS ARE LIKELY TODAY ALONG PALM BEACH.. BROWARD.. AND
MIAMI-DADE COUNTY OCEAN BEACHES DUE TO STRONG EASTERLY WINDS AND
FAVORABLE TIDE CONDITIONS.

OTHERWISE... HAZARDOUS WEATHER IS NOT EXPECTED OVER SOUTH FLORIDA.
Special weather statement, Jun 8, 5:30 AM EDT, 3 hours 25 minutes before
FLZ063-066>075-082200-

SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MIAMI FL
530 AM EDT TUE JUN 8 1999

NUMEROUS SHOWERS ALONG WITH A FEW THUNDERSTORMS ARE EXPECTED OVER
ALL OF SOUTH FLORIDA TODAY. WHILE NO SEVERE THUNDERSTORMS ARE
EXPECTED... THE SLOW MOVEMENT OF THIS PRECIPITATION WILL MEAN
PERIODS OF LOCALLY HEAVY RAINFALL ARE POSSIBLE.

RIP CURRENTS ARE LIKELY TODAY ALONG PALM BEACH.. BROWARD.. AND
MIAMI-DADE COUNTY OCEAN BEACHES DUE TO STRONG EASTERLY WINDS AND
FAVORABLE TIDE CONDITIONS.

OTHERWISE... HAZARDOUS WEATHER IS NOT EXPECTED OVER SOUTH FLORIDA.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 2:49 PM EDTFlash Flood WarningMFLBroward2 hr

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; radar from the NEXRAD Level II archive.