Special Weather Statement, NWS Miami, FL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
227 PM EDT FRI JUN 20 2014

.SHORT TERM (TONIGHT-SUNDAY NIGHT)...
THE WEAK MID/UPPER TROUGH OFF THE FLORIDA EAST COAST ALONG WITH THE
WEAK SURFACE TROUGH CONTINUE TO AFFECT THE WEATHER FOR SOUTH
FLORIDA. THIS WILL BE THE TREND THROUGH SATURDAY WITH A WESTERLY
STEERING FLOW ALSO REMAINING IN PLACE. FORECAST SOUNDINGS DO NOT
SHOW STRONG MID LEVEL LAPSE RATES BUT THERE HAS BEEN STRONG DIURNAL
HEATING TO GIVE LOW LEVELS AN INCREASED INSTABILITY ALONG WITH PWAT
AT 1.9 INCHES SO SOME THUNDERSTORMS COULD BECOME STRONG WITH AN
ISOLATED SEVERE WIND GUST ALSO POSSIBLE. THIS APPEARS TO BE A VERY
SIMILAR THREAT FOR SATURDAY AFTERNOON WITH PWAT CONTINUING JUST
UNDER TWO INCHES.

SUNDAY WILL BE A TRANSITIONAL PERIOD TO A DRIER PATTERN WITH THE
TROUGH BECOMING ABSORBED WITH ANOTHER UPSTREAM TROUGH THAT WILL MOVE
OFF THE MID ATLANTIC COAST. HOWEVER, JUST HOW MUCH OF A DRYING
PATTERN IS IN QUESTION NOW. BOTH THE GFS AND NAM SHOW SOME MID LAYER
DRYING BUT IT IS NOT SIGNIFICANT AND CONTINUE PWAT AT AROUND 1.7
INCHES. THE GFS IS SHOWING ANOTHER MID LEVEL TROUGH MOVING INTO THE
SOUTHERN PLAINS WHICH THEN BEGINS TO LIFT MORE MOISTURE NORTHWARD
FROM THE WESTERN CARIBBEAN INTO THE SOUTHEAST GULF OF MEXICO AND
DRIES IT OUT SOMEWHAT DURING THE MORNING BUT THEN SHOWS A MOISTURE
SURGE IN THE LATE AFTERNOON. IN ADDITION, THE NAM CONTINUES THE
WESTERN STEERING CURRENT WHICH WOULD KEEP THE EAST COAST THE MOST
ACTIVE BUT THE GFS DEPICTS A MORE SOUTHERLY STEERING FLOW IN
RESPONSE TO THE UPSTREAM TROUGH. SO, ALL IN ALL, STILL LOOKS LIKE A
FAIRLY ACTIVE PATTERN WITH AT LEAST SCATTERED COVERAGE JUST ABOUT
ANYWHERE.

.LONG TERM (MONDAY-FRIDAY)...
LOOKING INTO NEXT WEEK, THE ATLANTIC RIDGE WILL BUILD BACK TO THE
WEST AS THE MID ATLANTIC TROUGH SHIFTS TO THE EAST. THIS WILL ALLOW
MID LEVEL WARMING TO OCCUR WITH MEAGER MID LEVEL LAPSE RATES.. AT
THE SAME TIME, THE GFS IS SHOWING A SECOND SURGE OF MOISTURE ON
TUESDAY AHEAD OF THE TROUGH DEEPENING INTO THE NORTHERN GULF OF
MEXICO. HOWEVER, THE ECMWF SHOWS THE SUBTROPICAL RIDGE BECOMING
ESTABLISHED ACROSS SOUTH FLORIDA THROUGH THE WEEK WITH A LESSENING
THREAT OF THUNDERSTORMS. BUT CONSIDERING THE INSTABILITY THAT IS
ALWAYS PRESENT AT THIS TIME OF THE YEAR, SCATTERED ACTIVITY LOOKS
LIKE THE PRIMARY THREAT FOR THE WHOLE WEEK.

&&

.MARINE...
VERY TRANQUIL BOATING CONDITIONS ARE EXPECTED TO CONTINUE INTO
EARLY NEXT WEEK OUTSIDE OF SHOWERS AND THUNDERSTORMS. THERE COULD
BE SOME LOCALLY ROUGH SEAS NEAR THE STRONGER CELLS.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  73  88  74  89 /  40  50  20  20
FORT LAUDERDALE  75  88  76  89 /  40  50  20  20
MIAMI            74  89  76  89 /  40  50  20  20
NAPLES           74  88  75  88 /  20  30  20  20

&&

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

SHORT TERM...13/SI
LONG TERM....30/KOB

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
414 AM EDT FRI JUN 20 2014

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
202015-
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-
414 AM EDT FRI JUN 20 2014

...STRONG STORMS POSSIBLE EARLY AFTERNOON INTO THE EARLY EVENING HOURS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS: THUNDERSTORMS ARE EXPECTED ACROSS SOUTH FLORIDA
EARLY THIS AFTERNOON INTO THE EARLY EVENING HOURS. FREQUENT
LIGHTNING, HEAVY RAIN AND STRONG GUSTY WINDS ARE POSSIBLE. A FEW
STRONG THUNDERSTORMS ARE POSSIBLE.

WIND: THUNDERSTORM WINDS GUSTS OF 40 TO 55 MPH WILL BE POSSIBLE
THROUGH THE AFTERNOON AND EARLY EVENING.

FLOODING: SLOW MOVING HEAVY SHOWERS AND THUNDERSTORMS MAY LEAD TO
LOCALIZED FLOODING IN URBAN AND POOR DRAINAGE AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

CONVECTIVE ACTIVITY WILL CONTINUE THROUGH NEXT WEEK WITH MAINLY
AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER INDIVIDUAL
SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND 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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
238 PM EDT FRI JUN 20 2014

FLZ073-074-201915-
INLAND MIAMI-DADE COUNTY FL-METROPOLITAN MIAMI DADE FL-
238 PM EDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL INLAND MIAMI-DADE
COUNTY AND CENTRAL METROPOLITAN MIAMI DADE...

* UNTIL 315 PM EDT

* AT 238 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  STRONG THUNDERSTORM OVER SWEETWATER...OR JUST SOUTH AND
  SOUTHWEST OF DORAL...MOVING EAST AT 10 MPH.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 TO 55 MPH...UP
TO NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF
THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.

* THE STORM WILL AFFECT...
  MIAMI...HIALEAH...CORAL GABLES...SOUTH MIAMI...DORAL...MIAMI
  SPRINGS...SWEETWATER...WEST MIAMI...MEDLEY...UNIVERSITY PARK...WEST
  LITTLE RIVER...PINEWOOD...CORAL TERRACE...GLADEVIEW...
  FOUNTAINBLEAU...MIAMI INTERNATIONAL AIRPORT...TAMIAMI...
  WESTCHESTER...OLYMPIA HEIGHTS AND VIRGINIA GARDENS.

LAT...LON 2574 8041 2584 8041 2587 8021 2573 8026
TIME...MOT...LOC 1838Z 260DEG 8KT 2578 8038

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