Alert archive / Florida / Flash Flood Warnings in 2004

Flash Flood Warning 5, NWS Miami, FL

September 25, 2004Palm Beach County, Florida

NWS Miami, FL issued this flash flood warning at Sep 25, 2004, 10:30 PM EDT for Palm Beach County, Florida. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 25, 2004, 10:30 PM EDT (02:30 UTC)
Expired
Sep 26, 2004, 2:30 AM EDT
In force
4 hr
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 124 km from the middle of the area, began a volume at 02:32 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 00:00Z, 2.5 hours before the alert went out and 103 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 00:00Z on 2004-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2004-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 238 square meters per square second.19395878Sfc1 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
263 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
238 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KMFL 260230
FFWMIA
FLC099-260630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1030 PM EDT SAT SEP 25 2004

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PALM BEACH COUNTY IN SOUTHEAST FLORIDA

* UNTIL 230 AM EDT

* AT 1011 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  CONTINUOUS HEAVY RAINFALL ASSOCIATED WITH HURRICANE JEANNE MOVING  
  ONSHORE BETWEEN JUPITER INLET AND WEST PALM BEACH. 

* RADAR ESTIMATES INDICATED UP TO THREE INCHES PER HOUR ARE FALLING  
  NEAR JUPITER INLET. NORTHERN PALM BEACH COUNTY FROM THE            
  COASTLINE TO LAKE OKEECHOBEE CAN EXPECT AN ADDITIONAL THREE TO     
  FOUR INCHES OVER THE NEXT SEVERAL HOURS AS JEANNE MOVES WEST.      
  LOCALLY HEAVY RAINFALL IS POSSIBLE...AND FLOODING OF POORLY        
  DRAINED AND LOW LYING AREAS IS LIKELY.

A FEW MAIN ROADS WILL LIKELY BECOME IMPASSABLE WITH THIS EVENT.
MODERATE FLOODING OF UNPROTECTED STRUCTURES OR BUILDINGS ALONG WITH
MODERATE AGRICULTURAL DAMAGE ARE LIKELY. THE FLOODING WILL LIKELY BE
SIMILAR TO THAT CAUSED BY TROPICAL STORM GORDON IN NOVEMBER OF 1994.

TRAVEL IN HURRICANE CONDITIONS IS EXTREMELY DANGEROUS DUE TO VERY 
HIGH WINDS AS WELL AS THE POTENTIAL FOR FLOODING. CANALS MAY NOT BE 
DISTINGUISHABLE FROM ROADWAYS. REMEMBER...TURN AROUND...DONT DROWN

LAT...LON 2695 8011 2693 8060 2676 8068 2673 8087
      2637 8086 2640 8015

$$

EC
1 follow-up statement
000 
WGUS72 KMFL 260416
FFSMIA
FLC099-260630-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1215 AM EDT SUN SEP 26 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 230 AM EDT FOR PALM BEACH
COUNTY...

AT MIDNIGHT EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A RAINBAND PRODUCING TORRENTIAL RAINFALL OVER PALM BEACH 
COUNTY...ESPECIALLY ACROSS LAKE WORTH...WELLINGTON...BELLE 
GLADE...AND PAHOKEE. RADAR INDICATES THAT STORM TOTAL RAINFALL 
ESTIMATES OF 6 TO 8 INCHES HAVE OCCURRED IN THIS AREA. MOST OF THAT 
RAIN HAS FALLEN DURING THE LAST 3 HOURS. THESE VERY INTENSE RAIN 
SQUALLS WILL REPEATEDLY TRACK OVER PALM BEACH COUNTY OVER THE NEXT 
SEVERAL HOURS AS HURRICANE JEANNE MOVES INLAND JUST TO THE NORTH. 

ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN 
WATER BEGINS RISING.

AVOID VENTURING OUTSIDE. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE 
THE WATER COVERS THE ROADWAY THE WATER MAY OBSCURE DEEP CANALS OR 
PONDS AND COULD WASH OUT ROADWAYS.

LAT...LON 2694 8007 2693 8060 2676 8068 2673 8087
      2637 8086 2640 8007 2665 8002

$$
HANDEL

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 2:30 AM EDTFlash Flood WarningMFLPalm Beach4 hr
Sep 26, 7:24 AM EDTSpecial Marine WarningMFL2 hr
Sep 26, 9:30 AM EDTSpecial Marine WarningMFL2 hr
Sep 26, 11:30 AM EDTSpecial Marine WarningMFL2 hr
Sep 26, 1:30 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 1:30 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 1:30 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 2:52 PM EDTSpecial Marine WarningMFL98 min
Sep 26, 3:38 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 3:38 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 5:41 PM EDTSpecial Marine WarningMFL2 hr
Sep 26, 7:41 PM EDTSpecial Marine WarningMFL2 hr

Nearby

Flash Flood Warnings in Florida, 2004Every flash flood warning in 2004

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.