Alert archive / Florida / Flash Flood Warnings in 2005

Flash Flood Warning 3, NWS Miami, FL

August 25, 2005Miami-Dade County, Florida

NWS Miami, FL issued this flash flood warning at Aug 25, 2005, 6:57 PM EDT for Miami-Dade County, Florida. It was in force for 6 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
Aug 25, 2005, 6:57 PM EDT (22:57 UTC)
Expired
Aug 26, 2005, 1:00 AM EDT
In force
6 hr
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 21 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 12 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 2005-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 822 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 12:00Z on 2005-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
822 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KMFL 252303
FFWMFL
FLC086-260500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
657 PM EDT THU AUG 25 2005

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MIAMI-DADE COUNTY IN SOUTHEAST FLORIDA

* UNTIL 100 AM EDT

* AT 653 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAINFALL RATES OF 3 TO 5 INCHES PER HOUR MOVING INTO    
  KEY BISCAYNE AND CORAL GABLES. THE VERY INTENSE SOUTHERN AND       
  EASTERN INNER BANDS OF HURRICANE KATRINA WILL SLOWLY TRACK ACROSS  
  THE REST OF METRO MIAMI-DADE COUNTY THROUGH THE EVENING.

RAINFALL AMOUNTS OF UP TO 10 INCHES ARE POSSIBLE IN THE WARNED AREA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. THE WATER MAY OBSCURE DEEP CANALS OR PONDS. DO 
NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY REMEMBER...TURN AROUND...DONT DROWN THE BEST COURSE OF 
ACTION IS TO REMAIN OFF THE ROADS.

LAT...LON 2582 8009 2594 8042 2560 8045 2543 8016

$$

HANDEL
2 follow-up statements
000 
WGUS72 KMFL 260034
FFSMFL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
833 PM EDT THU AUG 25 2005

FLC086-260500-
MIAMI-DADE FL-
833 PM EDT THU AUG 25 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 100 AM EDT FOR MIAMI-DADE 
COUNTY...

AT 812 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 5 
TO 7 INCHES OF RAIN HAS FALLEN OVER DOWNTOWN MIAMI...MIAMI 
BEACH...CORAL GABLES...PINECREST...KENDALL. RADAR INDICATES AS MUCH 
AS 7 TO 9 INCHES OF RAIN HAS FALLEN OVER KEY BISCAYNE IN THE LAST 
THREE HOURS.

LOCAL ADDITIONAL RAINFALL AMOUNTS OF 5 TO 10 INCHES ARE POSSIBLE IN 
LOCATIONS WHERE RAIN BANDS PERSIST FOR SEVERAL HOURS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE SIGNIFICANT FLOODING 
OF URBAN AREAS...HIGHWAYS...AS WELL AS OTHER POORLY DRAINED AREAS 
AND OTHER LOW LYING SPOTS. FLOODING OF LOW-LYING STRUCTURES WITHIN 
THE WARNED AREA IS POSSIBLE. CLOSELY MONITOR WATER LEVELS IN YOUR 
AREA AND TAKE ANY NECESSARY ACTIONS TO PROTECT PROPERTY.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE 
WATER COVERS THE ROADWAY THE WATER MAY OBSCURE DEEP CANALS OR PONDS.

LAT...LON 2582 8009 2594 8042 2560 8045 2543 8016

$$

HANDEL
000 
WGUS72 KMFL 260218
FFSMFL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1017 PM EDT THU AUG 25 2005

FLC086-260500-
MIAMI-DADE FL-
1017 PM EDT THU AUG 25 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 100 AM EDT FOR MIAMI-DADE 
COUNTY...

AT 1012 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND LOCAL 
RAIN GAUGE NETWORKS INDICATED RAINFALL OF 5 TO 9 INCHES HAS OCCURRED 
OVER CENTRAL AND SOUTHERN MIAMI-DADE COUNTY WITH LOCALIZED AMOUNTS 
UP TO 14 INCHES. ADDITIONAL RAINFALL AMOUNTS OF 5 TO 10 INCHES ARE 
LIKELY IN THE WARNED AREA.

A FEW OF THE LOCATIONS MOST THREATENED BY FLOODING INCLUDE 
KENDALL...PERRINE...COUNTRY WALK...CUTLER RIDGE....GOULDS...AND 
HOMESTEAD.

THIS IS POTENTIALLY A VERY SIGNIFICANT FLOOD SITUATION. THIS AMOUNT 
OF RAIN COULD RESULT IN EXTENSIVE FLOODING ACROSS SOUTH  
FLORIDA...SIMILAR TO THAT EXPERIENCE WITH HURRICANE IRENE IN 1999 
AND THE TROPICAL DISTURBANCE OF OCTOBER 2 2000.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE WIDESPREAD FLOODING 
OF URBAN AREAS...HIGHWAYS...AS WELL AS OTHER POORLY DRAINED AREAS 
AND OTHER LOW LYING SPOTS AND MAY IMPACT NUMEROUS STRUCTURES.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY THE WATER MAY OBSCURE DEEP CANALS OR PONDS. TURN AROUND 
DONT DROWN.

LAT...LON 2582 8009 2594 8042 2537 8058 2531 8031

$$

HANDEL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 11:32 PM EDTInland Tropical Storm WatchMFLCollier, Monroe27 days
Aug 25, 9:00 AM EDTMarine Weather StatementMFL60 min

Nearby

Flash Flood Warnings in Florida, 2005Every flash flood warning in 2005

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.