Alert archive / Florida / Special Weather Statements in 2014

Special Weather Statement, NWS Miami, FL

June 11, 2014Palm Beach County, Florida

NWS Miami, FL issued this special weather statement at Jun 11, 2014, 4:03 PM EDT for Palm Beach County, Florida. It was in force for 27 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
Jun 11, 2014, 4:03 PM EDT (20:03 UTC)
Expired
Jun 11, 2014, 4:30 PM EDT
In force
27 min
Issued by
NWS Miami, FL

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 129 km from the middle of the area, began a volume at 20:06 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, 8.1 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 12:00Z on 2014-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2020 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2014-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
2020 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
738 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
72 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this special weather statement went out at Jun 11, 2:46 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jun 11, 2:46 PM EDT, 1 hour 17 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
246 PM EDT WED JUN 11 2014

.DISCUSSION...
LATEST RADAR TRENDS SHOW THE MAJORITY OF THE AFTERNOON CONVECTION
ACROSS PALM BEACH...BROWARD...AND MIAMI-DADE COUNTIES AS A RESULT
OF SOUTHWEST STEERING FLOW. A FEW STORMS WILL BE STRONG WITH GUSTY
WINDS AND LOCALLY HEAVY RAINFALL BEING THE MAIN IMPACTS.
CONVECTION SHOULD DISSIPATE LATER THIS EVENING OVER THE MAINLAND.
DEEP MOISTURE ALOFT IN THE EASTERN GULF OF MEXICO WILL CONTINUE TO
PUSH INTO SOUTH FLORIDA OVERNIGHT WITH MIDLEVEL SOUTHWEST FLOW.
THEREFORE BELIEVE SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL
BE SEEN THROUGH THE NIGHT MAINLY ACROSS THE AREA WATERS.

OVERALL CONVECTIVE REGIME SHOULD REMAIN FAIRLY CONSISTENT THROUGH
SATURDAY WITH PREVAILING SOUTHWEST FLOW AND AFTERNOON AND EVENING
CONVECTION. A BROAD H5 SHORTWAVE IS STILL EXPECTED TO SWEEP ACROSS
THE DEEP SOUTH AND INTO NORTHERN FLORIDA DURING THIS TIME FRAME.
THIS WILL ALLOW FOR BETTER COOLING ALOFT WHICH SHOULD ENHANCE THE
COVERAGE AND INTENSITY OF AFTERNOON SHOWERS AND THUNDERSTORMS.
MODEL SOUNDINGS CONTINUE TO DEPICT H5 TEMPERATURES IN THE -10C TO
-12C RANGE THURSDAY AND FRIDAY.

BY THE BEGINNING OF NEXT WEEK...SURFACE HIGH PRESSURE WILL BEGIN
TO BUILD BACK ACROSS THE WESTERN ATLANTIC WITH RIDGING ALOFT. THIS
WILL ALLOW FLOW TO BECOME MORE EASTERLY, PUSHING MOST OF THE
CONVECTIVE ACTIVITY INTO THE INTERIOR AND GULF COASTAL AREAS.

&&

.AVIATION...
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
DEVELOP ACROSS THE AREA THROUGH THE AFTERNOON AND EVENING HOURS
TODAY. THE WSW MEAN LOW-LEVEL FLOW FAVOR THIS ACTIVITY FOCUSING
TOWARD THE EAST COAST THROUGH THE AFTERNOON/EVENING PERIODS BEFORE
TRENDING DOWN LATER THIS EVENING INTO TONIGHT. SOME OF THIS ACTIVITY
MAY LEAD TO PERIODS OF SUB VFR CONDITIONS AT THE EAST COAST
TERMINALS. WINDS WILL BECOME LIGHT/VRB LATER TONIGHT THROUGH
DAYBREAK THURSDAY (LAND BREEZES SHOULD SETUP ALONG THE COASTS).
SIMILAR WINDS AND RAINFALL COVERAGE ARE EXPECTED THURSDAY.

&&

.MARINE...
THERE WILL CONTINUE TO BE A CHANCE OF SHOWERS AND THUNDERSTORMS
OVER THE WATERS THROUGH THE REMAINDER OF THIS WEEK AS SOUTH
FLORIDA RESIDES IN THE VICINITY OF A WEAK SURFACE RIDGE. AN UPPER
LEVEL TROUGH PASSING NORTH OF THE AREA OVER THE NEXT FEW DAYS,
WILL BRING A SOMEWHAT BETTER CHANCE FOR CONVECTION.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  88  74  90  73 /  60  20  60  20
FORT LAUDERDALE  87  76  89  74 /  50  20  60  20
MIAMI            88  76  89  74 /  50  20  60  20
NAPLES           87  73  87  72 /  40  20  40  20

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...NONE.
GM...NONE.
&&

SHORT TERM...10/CD
LONG TERM....10/CD
AVIATION...85/AG
Hazardous weather outlook, Jun 11, 2:42 PM EDT, 1 hour 21 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
242 PM EDT WED JUN 11 2014

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
120645-
LAKE OKEECHOBEE-BISCAYNE BAY-
COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL OUT 20 NM-
COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL OUT 20 NM-
WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL EXTENDING FROM
20 NM TO 60 NM-
WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL EXTENDING FROM 20 NM
TO THE TERRITORIAL WATERS OF THE BAHAMAS-GLADES-HENDRY-
INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER-
INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD-
COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
COASTAL WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL OUT 20 NM-
COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE, FL OUT 20 NM-
GULF WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL EXTENDING FROM
20 TO 60 NM-
242 PM EDT WED JUN 11 2014

...THUNDERSTORMS POSSIBLE THROUGH THE EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS: THUNDERSTORMS HAVE DEVELOPED AND ARE IMPACTING
PORTIONS OF THE EAST COAST...WHICH WILL REMAIN POSSIBLE INTO THE
EVENING PERIOD BEFORE TRENDING DOWN TONIGHT. FREQUENT
LIGHTNING...GUSTY WINDS...LOCALLY HEAVY RAIN AND HAIL WILL BE THE
PRIMARY CONCERNS THROUGH THIS TIME.

FLOODING: STORM MOTION IS EXPECTED TO BE SLOW TO THE NORTHEAST AND
THIS COULD CAUSE SOME LOCALIZED STREET FLOODING IN POOR DRAINAGE
AREAS.

WATERSPOUTS: WATERSPOUTS WILL BE POSSIBLE ACROSS THE NEARSHORE
WATERS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS EACH AFTERNOON AND EVENING.
THE MAIN CONCERNS AT THIS TIME WILL BE LOCALLY HEAVY RAINFALL AND
OCCASIONAL LIGHTNING STRIKES. THERE IS A GREATER POTENTIAL ON
THURSDAY FOR STRONG WIND GUSTS AND LARGE HAIL.

.SPOTTER INFORMATION STATEMENT...

WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER
INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND, HAIL AND
FLOODING TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

In the hours before

Local storm report, Jun 11, 3:42 PM EDT, 21 minutes before
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Local storm report, Jun 11, 3:45 PM EDT, 18 minutes before
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Local storm report, Jun 11, 3:49 PM EDT, 14 minutes before
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Local storm report, Jun 11, 3:56 PM EDT, 7 minutes before
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Local storm report, Jun 11, 3:57 PM EDT, 6 minutes before
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Special weather statement, Jun 11, 4:03 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 8:27 AM EDTSpecial Marine WarningMFL33 min
Jun 11, 9:01 AM EDTSpecial Marine WarningMFL29 min
Jun 11, 12:40 PM EDTSpecial Marine WarningMFL35 min
Jun 11, 1:54 PM EDTSpecial Weather StatementMFLBroward21 min
Jun 11, 2:00 PM EDTSpecial Marine WarningMFL30 min
Jun 11, 2:19 PM EDTSpecial Weather StatementMFLBroward41 min
Jun 11, 2:24 PM EDTSevere Thunderstorm WarningMFLBroward13 min
Jun 11, 3:05 PM EDTSpecial Weather StatementMFLPalm Beach40 min
Jun 11, 3:23 PM EDTSpecial Weather StatementMFLPalm Beach37 min
Jun 11, 3:37 PM EDTSpecial Marine WarningMFL38 min
Jun 11, 3:40 PM EDTSevere Thunderstorm WarningMFLPalm Beach14 min
Jun 11, 4:08 PM EDTSpecial Weather StatementMFLHendry52 min
Jun 11, 4:12 PM EDTSpecial Marine WarningMFL33 min
Jun 11, 4:40 PM EDTSpecial Weather StatementMFLPalm Beach50 min
Jun 11, 4:48 PM EDTSpecial Weather StatementMFLMartin42 min
Jun 11, 4:54 PM EDTSpecial Weather StatementMFLPalm Beach51 min
Jun 11, 6:42 PM EDTSpecial Weather StatementMFLOkeechobee18 min

Nearby

Special Weather Statements in Florida, 2014Every special weather statement in 2014

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.