Alert archive / Florida / Flash Flood Warnings in 2012

Flash Flood Warning 6, NWS Miami, FL

August 27, 2012Broward County, Palm Beach County, Florida

NWS Miami, FL issued this flash flood warning at Aug 27, 2012, 1:40 PM 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 outline as issued.

The facts

Issued
Aug 27, 2012, 1:40 PM EDT (17:40 UTC)
Expired
Aug 27, 2012, 4:30 PM EDT
In force
3 hr
Issued by
NWS Miami, FL
Area
Storm-based polygon
Flood severity
None

Counties Broward County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 103 km from the middle of the area, began a volume at 17:41 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, 5.7 hours before the alert went out and 78 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 2012-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2762 joules per kilogram.LCLEL10008507005003002001001 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 2012-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
2762 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
480 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
157 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.

008 
WGUS52 KMFL 271740
FFWMFL
FLC011-099-272030-
/O.NEW.KMFL.FF.W.0006.120827T1740Z-120827T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
140 PM EDT MON AUG 27 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 430 PM EDT

* AT 137 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A PERSISTENT BAND OF HEAVY RAIN CONTINUING OVER THE EAST COAST     
  METRO AND COASTAL AREAS STREAMING FROM SOUTH TO NORTH. THIS BAND   
  WILL LIKELY CONTINUE TO IMPACT THESE AREAS THROUGH AT LEAST THE    
  MID TO LATE AFTERNOON HOURS. RAINFALL RATES RANGING FROM 1 TO 3    
  INCHES EVERY TWO HOURS WILL REMAIN POSSIBLE THROUGH THIS TIME.  

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE AREAS         
  EXTENDING SOUTH FROM NORTHERN PALM BEACH COUNTY TO THE BROWARD     
  AND MIAMI-DADE COUNTY LINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

A FLOOD WATCH IS ALSO IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE
FLOOD WARNING AREA.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

LAT...LON 2600 8012 2600 8035 2696 8055 2697 8007
      2680 8003 2663 8003 2660 8004 2659 8003

$$
1 follow-up statement
060 
WGUS72 KMFL 271821
FFSMFL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
221 PM EDT MON AUG 27 2012

FLC011-099-272030-
/O.CON.KMFL.FF.W.0006.000000T0000Z-120827T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BROWARD FL-PALM BEACH FL-
221 PM EDT MON AUG 27 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM EDT FOR
EASTERN PALM BEACH AND EASTERN BROWARD COUNTIES...

AT 218 PM EDT...THE PUBLIC REPORTED SIGNIFICANT FLOODING IN BROWARD 
COUNTY JUST WEST OF PINE ISLAND ROAD WITH 12 TO 13 INCHES OF WATER 
FLOWING INTO HOMES. THE LATEST RAINFALL ESTIMATES FROM RADAR 
INDICATE RAINFALL RATES AROUND 1 TO 3 INCHES PER HOUR CONTINUING 
OVER THE SAME AREA. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GOLDEN
LAKES...PORT OF PALM BEACH...NORTH COUNTY AIRPORT...NORTH PALM
BEACH...WEST PALM BEACH...WELLINGTON...TEQUESTA...ROYAL PALM BEACH...
RIVIERA BEACH...PALM BEACH GARDENS...PALM BEACH...LION COUNTRY
SAFARI...LAKE WORTH...JUPITER...JUNO BEACH...HAVERHILL AND GREENACRES
CITY

LAT...LON 2600 8012 2600 8035 2696 8055 2697 8007
      2680 8003 2663 8003 2660 8004 2659 8003

$$

85-GIBBS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 8:16 PM EDTSpecial Weather StatementMFLBroward44 min
Aug 26, 8:38 PM EDTAreal Flood AdvisoryMFLBroward, Palm Beach112 min
Aug 26, 9:07 PM EDTSpecial Weather StatementMFLPalm Beach23 min
Aug 26, 9:10 PM EDTRiver Flood WarningMFLGlades6 days
Aug 26, 9:23 PM EDTTornado WarningMFLPalm Beach22 min
Aug 26, 9:30 PM EDTAreal Flood AdvisoryMFLPalm Beach2 hr
Aug 26, 9:38 PM EDTSpecial Weather StatementMFLPalm Beach37 min
Aug 26, 9:49 PM EDTTornado WarningMFLBroward, Miami-Dade7 min
Aug 26, 10:13 PM EDTSpecial Weather StatementMFLBroward62 min
Aug 26, 10:17 PM EDTSpecial Marine WarningMFL118 min
Aug 26, 10:18 PM EDTSpecial Weather StatementMFLPalm Beach57 min
Aug 26, 10:49 PM EDTFlash Flood WarningMFLPalm Beach3 hr
Aug 26, 11:21 PM EDTSpecial Weather StatementMFLBroward, Palm Beach54 min
Aug 26, 11:40 PM EDTAreal Flood AdvisoryMFLBroward, Palm Beach2 hr
Aug 27, 12:06 AM EDTAreal Flood AdvisoryMFLPalm Beach114 min
Aug 27, 12:13 AM EDTSpecial Marine WarningMFL2 hr
Aug 27, 12:38 AM EDTSpecial Weather StatementMFLPalm Beach52 min
Aug 27, 1:19 AM EDTSpecial Weather StatementMFLPalm Beach56 min
Aug 27, 1:51 AM EDTFlash Flood WarningMFLPalm Beach9 hr
Aug 27, 1:53 AM EDTSpecial Weather StatementMFLGlades, Palm Beach52 min
Aug 27, 2:08 AM EDTSpecial Marine WarningMFL112 min
Aug 27, 2:10 AM EDTAreal Flood AdvisoryMFLPalm Beach110 min
Aug 27, 5:49 AM EDTSmall Craft AdvisoryMFL38 hr
Aug 27, 5:49 AM EDTWind AdvisoryMFLBroward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more15 hr
Aug 27, 6:23 AM EDTRip Current StatementMFLBroward, Collier, Miami-Dade, Palm Beach19 hr
Aug 27, 6:30 AM EDTAreal Flood AdvisoryMFLPalm Beach2 hr
Aug 27, 6:36 AM EDTSpecial Marine WarningMFL24 min
Aug 27, 6:38 AM EDTSpecial Marine WarningMFL2 hr
Aug 27, 8:07 AM EDTSpecial Weather StatementMFLPalm Beach53 min
Aug 27, 8:26 AM EDTAreal Flood AdvisoryMFLGlades, Palm Beach42 min
Aug 27, 8:38 AM EDTSpecial Marine WarningMFL52 min
Aug 27, 9:21 AM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade, Palm Beach114 min
Aug 27, 9:52 AM EDTSpecial Weather StatementMFLBroward23 min
Aug 27, 9:57 AM EDTSpecial Weather StatementMFLBroward18 min
Aug 27, 11:10 AM EDTFlash Flood WarningMFLBroward, Palm Beach3 hr
Aug 27, 11:25 AM EDTSpecial Weather StatementMFLBroward, Miami-Dade, Palm Beach65 min
Aug 27, 11:56 AM EDTSpecial Marine WarningMFL2 hr
Aug 27, 12:04 PM EDTGale WarningMFL9 hr
Aug 27, 12:06 PM EDTAreal Flood AdvisoryMFLMiami-Dade114 min
Aug 27, 12:24 PM EDTCoastal Flood StatementMFLCollier13 hr
Aug 27, 1:05 PM EDTSpecial Weather StatementMFLBroward, Miami-Dade, Palm Beach25 min
Aug 27, 1:08 PM EDTSevere Thunderstorm WarningMFLPalm Beach37 min
Aug 27, 1:28 PM EDTSpecial Weather StatementMFLBroward, Palm Beach62 min
Aug 27, 1:47 PM EDTAreal Flood AdvisoryMFLBroward, Miami-Dade118 min
Aug 27, 2:14 PM EDTSpecial Marine WarningMFL91 min
Aug 27, 2:32 PM EDTSpecial Weather StatementMFLBroward, Palm Beach58 min
Aug 27, 2:56 PM EDTSevere Thunderstorm WarningMFLPalm Beach12 min
Aug 27, 3:01 PM EDTSpecial Weather StatementMFLCollier29 min
Aug 27, 3:19 PM EDTSpecial Marine WarningMFL116 min
Aug 27, 4:39 PM EDTAreal Flood WarningMFLBroward, Palm Beach6 hr
Aug 27, 5:11 PM EDTSpecial Marine WarningMFL94 min

Nearby

Flash Flood Warnings in Florida, 2012Every flash flood warning in 2012

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.