Alert archive / Florida / Flood Watches in 2012

Flood Watch 2, NWS Miami, FL

April 29, 2012Broward County, Miami-Dade County, Palm Beach County, Florida

NWS Miami, FL issued this flood watch at Apr 29, 2012, 5:17 AM EDT for Broward County, Miami-Dade County, Palm Beach County, Florida. It was in force for 39 hr.

The area

The counties it named.

The facts

Issued
Apr 29, 2012, 5:17 AM EDT (09:17 UTC)
Expired
Apr 30, 2012, 8:00 PM EDT
In force
39 hr
Issued by
NWS Miami, FL
Flood severity
None

Counties Broward County, FL, Miami-Dade County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 59 km from the middle of the area, began a volume at 09:17 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, 9.3 hours before the alert went out and 39 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 2012-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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 2012-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -82 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
73 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-82 m²/s²
0-3 km storm-relative helicity
-77 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.

532 
WGUS62 KMFL 290917
FFAMFL

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
517 AM EDT SUN APR 29 2012

FLZ068-072>074-168-172>174-300000-
/O.NEW.KMFL.FA.A.0002.120429T0917Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
517 AM EDT SUN APR 29 2012

...FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLOOD WATCH FOR A PORTION OF SOUTH FLORIDA...INCLUDING THE 
  FOLLOWING AREAS...COASTAL BROWARD...COASTAL MIAMI DADE... 
  COASTAL PALM BEACH...FAR SOUTH MIAMI DADE...INLAND MIAMI 
  DADE...METRO BROWARD...METRO MIAMI DADE AND METRO PALM BEACH. 

* THROUGH MONDAY EVENING

* DEEP TROPICAL MOISTURE WILL OVERSPREAD THE REGION AND REMAIN IN
  PLACE THROUGH MONDAY AS A TROUGH OF LOW PRESSURE SLOWLY ADVANCES
  ACROSS THE AREA. TOTAL RAINFALL AMOUNTS OVER THE WATCH AREA WILL
  RANGE FROM 3 TO 5 INCHES THROUGH MONDAY EVENING, WITH LOCALLY
  HIGHER AMOUNTS, PERHAPS UP TO 8 INCHES IN A FEW LOCALES. AT THIS
  TIME, IT APPEARS THE HEAVIEST RAINFALL IS LIKELY TO FALL OVER
  EASTERN PORTIONS OF MIAMI DADE AND BROWARD COUNTIES, INCLUDING
  THE METROPOLITAN AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$
5 follow-up statements
158 
WGUS62 KMFL 291914
FFAMFL

FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
314 PM EDT SUN APR 29 2012

FLZ068-072>074-168-172>174-301000-
/O.CON.KMFL.FA.A.0002.000000T0000Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
314 PM EDT SUN APR 29 2012

...FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY EVENING...

THE FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTH FLORIDA...INCLUDING THE FOLLOWING AREAS... 
  COASTAL BROWARD...COASTAL MIAMI DADE...COASTAL PALM BEACH... 
  FAR SOUTH MIAMI DADE...INLAND MIAMI DADE...METRO BROWARD... 
  METRO MIAMI DADE AND METRO PALM BEACH. 

* THROUGH MONDAY EVENING

* DEEP TROPICAL MOISTURE IN PLACE OVER SOUTHEAST FLORIDA WILL
  REMAIN IN PLACE THROUGH LATE MONDAY AS A TROUGH OF LOW PRESSURE
  SLOWLY ADVANCES ACROSS THE AREA. TOTAL RAINFALL AMOUNTS OVER THE
  WATCH AREA WILL RANGE FROM 3 TO 5 INCHES THROUGH MONDAY EVENING,
  WITH LOCALLY HIGHER AMOUNTS, PERHAPS UP TO 8 INCHES IN A FEW
  LOCALES. AT THIS TIME, IT APPEARS THE HEAVIEST RAINFALL IS
  LIKELY TO FALL OVER EASTERN PORTIONS OF MIAMI DADE AND BROWARD
  COUNTIES, INCLUDING THE METROPOLITAN AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$

GREGORIA
001 
WGUS62 KMFL 300905
FFAMFL

FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
505 AM EDT MON APR 30 2012

FLZ068-072>074-168-172>174-010000-
/O.CON.KMFL.FA.A.0002.000000T0000Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
505 AM EDT MON APR 30 2012

...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

THE FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTH FLORIDA...INCLUDING THE FOLLOWING AREAS...
  COASTAL BROWARD...COASTAL MIAMI DADE...COASTAL PALM BEACH...FAR
  SOUTH MIAMI DADE...INLAND MIAMI DADE...METRO BROWARD...METRO
  MIAMI DADE AND METRO PALM BEACH.

* THROUGH THIS EVENING

* DEEP TROPICAL MOISTURE WILL REMAIN IN PLACE OVER SOUTHEAST
  FLORIDA THROUGH THIS EVENING AS A TROUGH OF LOW PRESSURE SLOWLY
  ADVANCES ACROSS THE AREA. ADDITIONAL RAINFALL AMOUNTS OVER THE
  WATCH AREA WILL RANGE FROM 1 TO 3 INCHES THROUGH THIS EVENING
  WITH LOCALLY HIGHER AMOUNTS. AT THIS TIME, IT APPEARS THE
  HEAVIEST RAINFALL IS LIKELY TO OCCUR OVER EASTERN PORTIONS OF
  MIAMI DADE AND BROWARD COUNTIES, INCLUDING THE METROPOLITAN AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$
404 
WGUS62 KMFL 300920
FFAMFL

FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
520 AM EDT MON APR 30 2012

FLZ068-072>074-168-172>174-010000-
/O.CON.KMFL.FA.A.0002.000000T0000Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
520 AM EDT MON APR 30 2012

...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

THE FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTH FLORIDA...INCLUDING THE FOLLOWING AREAS... 
  COASTAL BROWARD...COASTAL MIAMI DADE...COASTAL PALM BEACH... 
  FAR SOUTH MIAMI DADE...INLAND MIAMI DADE...METRO BROWARD... 
  METRO MIAMI DADE AND METRO PALM BEACH. 

* THROUGH THIS EVENING

* DEEP TROPICAL MOISTURE WILL REMAIN IN PLACE OVER SOUTHEAST
  FLORIDA THROUGH THIS EVENING AS A TROUGH OF LOW PRESSURE SLOWLY
  ADVANCES ACROSS THE AREA. ADDITIONAL RAINFALL AMOUNTS OVER THE
  WATCH AREA WILL RANGE FROM 1 TO 3 INCHES THROUGH THIS EVENING
  WITH LOCALLY HIGHER AMOUNTS. AT THIS TIME, IT APPEARS THE
  HEAVIEST RAINFALL IS LIKELY TO OCCUR OVER EASTERN PORTIONS OF
  MIAMI DADE AND BROWARD COUNTIES, INCLUDING THE METROPOLITAN AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$
993 
WGUS62 KMFL 301823
FFAMFL

FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
223 PM EDT MON APR 30 2012

FLZ068-072>074-168-172>174-010000-
/O.CON.KMFL.FA.A.0002.000000T0000Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
223 PM EDT MON APR 30 2012

...FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

THE FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTH FLORIDA...INCLUDING THE FOLLOWING AREAS... 
  COASTAL BROWARD...COASTAL MIAMI DADE...COASTAL PALM BEACH... 
  FAR SOUTH MIAMI DADE...INLAND MIAMI DADE...METRO BROWARD... 
  METRO MIAMI DADE AND METRO PALM BEACH. 

* UNTIL 8 PM EDT THIS EVENING

* DEEP TROPICAL MOISTURE WILL REMAIN IN PLACE OVER SOUTHEAST
  FLORIDA THROUGH THIS EVENING AS A TROUGH OF LOW PRESSURE SLOWLY
  ADVANCES ACROSS THE AREA. ADDITIONAL RAINFALL AMOUNTS OVER THE
  WATCH AREA WILL RANGE FROM 1 TO 2 INCHES THROUGH THIS EVENING
  WITH LOCALLY HIGHER AMOUNTS. AT THIS TIME, IT APPEARS THE
  HEAVIEST RAINFALL WILL LIKELY CONTINUE OVER SOUTHERN PORTIONS OF
  MIAMI DADE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$
216 
WGUS62 KMFL 302359
FFAMFL

FLOOD WATCH
NATIONAL WEATHER SERVICE MIAMI FL
759 PM EDT MON APR 30 2012

...FLOOD WATCH WILL BE ALLOWED TO EXPIRE... 

FLZ068-072>074-168-172>174-010100-
/O.EXP.KMFL.FA.A.0002.000000T0000Z-120501T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
759 PM EDT MON APR 30 2012

...FLOOD WATCH WILL EXPIRE AT 8 PM EDT THIS EVENING...

ABUNDANT TROPICAL MOISTURE CONTINUES ACROSS SOUTH FLORIDA THIS
EVENING BUT AREAL COVERAGE OF HEAVY RAINFALL HAS DIMINISHED
CONSIDERABLY AND IR SATELLITE IMAGERY ALSO INDICATES THE THE
ATMOSPHERE HAS BECOME MORE STABLE INHIBITING DEEP CONVECTION.
THERE WILL STILL BE A CHANCE OF SHOWER DEVELOPMENT OVER THE
ATLANTIC AND MOVE ONSHORE OF THE SOUTHEAST FLORIDA COAST AND ANY
HEAVY SHOWER COULD CAUSE SOME MINOR URBAN STREET FLOODING.
HOWEVER, THIS WILL ONLY BE IN ISOLATED LOCATIONS AND THE THREAT
FOR WIDESPREAD FLOODING HAS DECREASED. THEREFORE, THE FLOOD WATCH
FOR A PORTION OF SOUTH FLORIDA WILL EXPIRE AT 8 PM EDT THIS
EVENING. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 2:03 AM EDTRip Current StatementMFLBroward, Miami-Dade, Palm Beach4 days
Apr 29, 4:27 AM EDTSmall Craft AdvisoryMFL3 days
Apr 29, 6:07 AM EDTAreal Flood AdvisoryMFLMiami-Dade113 min

Nearby

Flood Watches in Florida, 2012Every flood watch 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.