Alert archive / Florida / Flash Flood Warnings in 2008

Flash Flood Warning 5, NWS Miami, FL

May 24, 2008Palm Beach County, Florida

NWS Miami, FL issued this flash flood warning at May 24, 2008, 8:12 PM EDT for Palm Beach County, Florida. It was in force for 93 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 24, 2008, 8:12 PM EDT (00:12 UTC)
Expired
May 24, 2008, 9:45 PM EDT
In force
93 min
Issued by
NWS Miami, FL
Area
Storm-based polygon
Flood severity
None

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 98 km from the middle of the area, began a volume at 00:12 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, 0.2 hours before the alert went out and 72 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 2008-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1366 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 2008-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 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
1366 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1217 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KMFL 250016
FFWMFL
FLC099-250145-
/O.NEW.KMFL.FF.W.0005.080525T0012Z-080525T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
812 PM EDT SAT MAY 24 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN PALM BEACH COUNTY IN SOUTHEAST FLORIDA...
  THIS INCLUDES THE CITY OF DELRAY BEACH...

* UNTIL 945 PM EDT

* AT 804 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS CONTINUE TO REPORT 
  STREET FLOODING ACROSS THE AREA ALONG WITH HOMES FLOODED ON NASSAU
  STREET. SCATTERED THUNDERSTORMS WILL ALSO CONTINUE TO AFFECT DELRAY
  BEACH AREA DURING THE NEXT HOUR TO TWO WITH ADDITIONAL 1 TO 2 INCHES
  OF RAINFALL. THIS WILL CONTINUE TO AGGREGATIVE THE FLOODING PROBLEMS
  IN THE AREA. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN EXTENDED
  UNTIL 945 PM EDT THIS EVENING FOR SOUTHEASTERN PALM BEACH COUNTY.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO A SAFER LOCATION IMMEDIATELY.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN MIAMI.

LAT...LON 2642 8007 2642 8017 2650 8017 2649 8006
TIME...MOT...LOC 0012Z 180DEG 0KT 2646 8011

$$

BAXTER
3 follow-up statements
000 
WGUS52 KMFL 250019 CCA
FFWMFL
FLC099-250145-
/O.COR.KMFL.FF.W.0005.080525T0012Z-080525T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIAMI FL
818 PM EDT SAT MAY 24 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN PALM BEACH COUNTY IN SOUTHEAST FLORIDA...
  THIS INCLUDES THE CITY OF DELRAY BEACH...

* UNTIL 945 PM EDT

* AT 804 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS CONTINUE TO REPORT 
  STREET FLOODING ACROSS THE AREA ALONG WITH HOMES FLOODED ON NASSAU
  STREET. SCATTERED THUNDERSTORMS WILL ALSO CONTINUE TO AFFECT DELRAY
  BEACH AREA DURING THE NEXT HOUR TO TWO WITH ADDITIONAL 1 TO 2 INCHES
  OF RAINFALL. THIS WILL CONTINUE TO EXACERBATE THE FLOODING PROBLEMS
  IN THE AREA. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN EXTENDED
  UNTIL 945 PM EDT THIS EVENING FOR SOUTHEASTERN PALM BEACH COUNTY.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO A SAFER LOCATION IMMEDIATELY.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN MIAMI.

LAT...LON 2642 8007 2642 8017 2650 8017 2649 8006
TIME...MOT...LOC 0012Z 180DEG 0KT 2646 8011

$$

BAXTER
000 
WGUS72 KMFL 250111
FFSMFL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
907 PM EDT SAT MAY 24 2008

FLC099-250145-
/O.CON.KMFL.FF.W.0005.000000T0000Z-080525T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PALM BEACH FL-
907 PM EDT SAT MAY 24 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR
SOUTHEASTERN PALM BEACH COUNTY...

AT 859 PM EDT...DELRAY BEACH POLICE IS STILL REPORTING SOME STREETS
FLOODED IN THE AREA FROM THE THUNDERSTORMS EARLY THIS EVENING.
NATIONAL WEATHER SERVICE DOPPLER RADAR IS ALSO SHOWING SOME MODERATE
RAINS OVER LION COUNTRY SAFARI MOVING SOUTHEAST AT 15 TO 20 MPH.
THESE MODERATE RAINS COULD MOVE INTO THE DELRAY BEACH AREA...AND PRODUCE
AN ADDITIONAL QUARTER TO HALF AN INCH OF RAINFALL. THIS WILL CONTINUE
TO EXACERBATE THE FLOODING PROBLEM IN THE AREA. THEREFORE...THE FLASH
FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS EVENING FOR
SOUTHEASTERN PALM BEACH COUNTY.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. WHEN ENCOUNTERING FLOODED ROADS MAKE THE
SMART CHOICE...TURN AROUND...DONT DROWN.

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.

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

LAT...LON 2642 8007 2642 8017 2650 8017 2649 8006
TIME...MOT...LOC 0107Z 180DEG 0KT 2646 8011

$$

BAXTER
000 
WGUS72 KMFL 250146
FFSMFL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
945 PM EDT SAT MAY 24 2008

FLC099-250154-
/O.EXP.KMFL.FF.W.0005.000000T0000Z-080525T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PALM BEACH FL-
945 PM EDT SAT MAY 24 2008

...THE FLASH FLOOD WARNING HAS EXPIRED AT 945 PM EDT FOR SOUTHEASTERN
PALM BEACH COUNTY...

THE THUNDERSTORMS THAT PROMPTED THE FLASH FLOOD WARNING HAS MOVED SOUTH
DELRAY BEACH AREA...AND THE DELRAY BEACH POLICE HAS ALSO REPORTED THAT
THE STREETS IN THE AREA ARE NO LONGER FLOODING. THEREFORE...THE 
FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE FOR SOUTHEASTERN PALM
BEACH COUNTY.

LAT...LON 2642 8007 2642 8017 2650 8017 2649 8006
TIME...MOT...LOC 0144Z 180DEG 0KT 2646 8012

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 8:08 PM EDTSpecial Weather StatementMFLMiami-Dade52 min
May 24, 8:22 PM EDTSpecial Weather StatementMFLBroward23 min
May 24, 8:44 PM EDTSpecial Marine WarningMFL61 min
May 24, 9:29 PM EDTSpecial Weather StatementMFLBroward31 min
May 24, 9:33 PM EDTSpecial Weather StatementMFLPalm Beach27 min
May 24, 10:30 PM EDTSpecial Marine WarningMFL2 hr
May 24, 10:47 PM EDTSpecial Weather StatementMFLPalm Beach58 min
May 24, 11:18 PM EDTSpecial Marine WarningMFL57 min
May 25, 7:04 AM EDTDense Smoke AdvisoryMFLGlades, Hendry, Palm Beach116 min
May 25, 5:15 PM EDTSpecial Weather StatementMFLMonroe30 min

Nearby

Flash Flood Warnings in Florida, 2008Every flash flood warning in 2008

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.