Special Weather Statement, NWS Miami, FL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
252 PM EDT SUN JUL 17 2011

.DISCUSSION...

DEEP LAYER MOISTURE AND CONVECTION IS NOW TAKING PLACE FROM NEAR
SOUTHEASTERN LOUISIANA EASTWARD ACROSS THE FLORIDA PENINSULA AND
CONTINUING FURTHER EASTWARD TO THE BROAD LOW EAST OF CAPE
CANAVERAL. SHOWERS AND ISOLATED THUNDERSTORMS ARE JUST BEGINNING
ACROSS THE SOUTH FLORIDA PENINSULA. SCATTERED SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO CONTINUE FORMING ACROSS THE REGION
THE REMAINDER OF THE AFTERNOON HOURS BEFORE TAPERING OFF DURING
THE EVENING...WITH ONLY ISOLATED ACTIVITY EXPECTED ACROSS THE
REGIONAL WATERS OVER NIGHT.

ALTHOUGH THE BROAD LOW CURRENTLY HAS LITTLE MOVEMENT...THE
GUIDANCE CONTINUES TO INDICATE A SLOW EASTWARD TO NORTHEASTWARD
DRIFT BEGINNING ON MONDAY...BUT THERE IS STILL A LOT OF UNCERTAINTY
IN THE MOVEMENT OF THIS BROAD LOW...WILL HAVE TO MONITOR IT CLOSELY.

ALTHOUGH THE AFOREMENTIONED BROAD LOW IS FORECAST TO SLOWLY DRIFT
NORTHEAST...THE BOUNDARY LAYER MOISTURE ACROSS THE ADJACENT GULF
AND ATLANTIC WATERS OFF THE FLORIA PENINSULA IS FORECAST TO SLOWLY
DRIFT SOUTHWARD MONDAY AND TUESDAY...MAINTAINING DEEPER LAYERED
MOISTURE ACROSS THE REGION WITH MAINLY AFTERNOON AND EVENING SCATTERED
SHOWERS AND THUNDERSTORMS EXPECTED ACROSS THE REGION. OTHER
SYNOPTIC FACTORS DO NOT SEEM FAVORABLE TO SUSTAIN MORE WIDESPREAD
CONVECTION SO JUST SCATTERED ACTIVITY IS EXPECTED.

&&

.MARINE...

A SMALL NORTHEAST SWELL IS EXPECTED TO LINGER THIS EVENING AND
TONIGHT ACROSS THE ATLANTIC WATERS...WITH MOST OF THE IMPACT
EAST OF PALM BEACH COUNTY. THIS SWELL IS FORECAST TO SLOWLY
DECREASE ON MONDAY.

&&

.FIRE WEATHER...

NO FIRE WEATHER CONCERNS.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  76  90  75  90 / 30 50 30 40
FORT LAUDERDALE  79  90  78  90 / 40 50 30 40
MIAMI            78  91  77  91 / 40 50 30 40
NAPLES           76  90  75  90 / 30 40 20 40

&&

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

DISCUSSION/MARINE...60/BD
AVIATION/RADAR/FIRE...52/PS

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
1000 AM EDT SUN JUL 17 2011

FLZ063-066>075-168-172>174-172330-
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-
1000 AM EDT SUN JUL 17 2011

...SCATTERED TO NUMEROUS THUNDERSTORMS POSSIBLE THIS AFTERNOON...
...MAIN CONCERN WILL BE LOCALLY HEAVY RAIN...
...GUSTY WINDS AND SMALL HAIL POSSIBLE WITH A FEW STORMS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS: SCATTERED TO LOCALLY NUMEROUS THUNDERSTORMS ARE
POSSIBLE ONCE AGAIN THIS AFTERNOON WITH STORMS MOSTLY NEARLY
STATIONARY AND PROPAGATING ALONG OUTFLOW BOUNDARIES. THIS ACTIVITY
WILL BE ASSOCIATED WITH THE INTERACTION BETWEEN A BOUNDARY
STRETCHING ACROSS THE LAKE OKEECHOBEE REGION FROM THE LOW PRESSURE
SYSTEM NORTH OF THE BAHAMAS AND AFTERNOON SEA AND LAKE BREEZES. A
FEW OF THE STORMS COULD BE STRONG WITH THE PRIMARY THREATS BEING
FREQUENT LIGHTNING STRIKES, HEAVY RAINFALL, GUSTY WINDS AND SMALL
HAIL.

HOWEVER, AN ALTERNATE SCENARIO IS THE SUPPRESSION OF ANY SUCH
ACTIVITY ACROSS THE LOCAL AREA AS THE LOW PRESSURE SYSTEM NORTH OF
THE BAHAMAS IS FED BY MOISTURE FROM ITS SURROUNDINGS. THEREFORE,
CONFIDENCE IN THE CURRENT FORECAST IS BELOW AVERAGE.

WATERSPOUTS: THE COMBINATION OF LIGHT LOW LEVEL WINDS AND LOW
LEVEL CLOUD CONVERGENCE BANDS ACROSS THE LOCAL ATLANTIC WATERS
WILL RESULT IN A SLIGHT RISK OF WATERSPOUTS TODAY.

WIND: THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS OF 45 TO 55 MPH.

HAIL: THE STRONGEST STORMS COULD PRODUCE SMALL HAIL.

FLOODING: A SLOW STORM MOTION COULD RESULT IN LOCALLY HEAVY
RAINS, WHICH IN TURN, COULD RESULT IN MINOR FLOODING IN POORLY
DRAINED AREAS AND ON SOME ROADWAYS.

TEMPERATURES: MAXIMUM HEAT INDEX READINGS COULD REACH 100 TO 105
DEGREES ACROSS INTERIOR PORTIONS OF SOUTH FLORIDA THIS AFTERNOON.

RIP CURRENTS: A NORTH TO NORTHEAST SWELL AROUND 2 FEET WILL RESULT
IN A SLIGHT RISK OF RIP CURRENTS ALONG THE ATLANTIC BEACHES OF
PALM BEACH COUNTY TODAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SCATTERED THUNDERSTORMS WILL REMAIN POSSIBLE EACH DAY WITH FREQUENT
LIGHTNING, LOCALLY HEAVY RAINFALL, GUSTY WINDS, AND SMALL HAIL THE
MAIN CONCERNS PARTICULARLY DURING THE EARLY PART OF THE WEEK.

.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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
413 PM EDT SUN JUL 17 2011

FLZ073-075-172100-
INLAND MIAMI-DADE COUNTY FL MAINLAND MONROE FL
413 PM EDT SUN JUL 17 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  WEST CENTRAL MIAMI-DADE COUNTY
  NORTHEASTERN MONROE COUNTY

* UNTIL 500 PM EDT

* AT 410 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES
  SOUTH OF OASIS RANGER STATION TO LOOP ROAD EE CENTER TO 9 MILES
  NORTHWEST OF PA-HAY OKEE OVERLOOK...AND MOVING SOUTH AT 5 MPH.

* THE LINE OF STORMS WILL AFFECT...
  LOOP ROAD EE CENTER...
  AND SURROUNDING COMMUNITIES.

THE MAIN IMPACT WILL BE FREQUENT TO EXCESSIVE LIGHTNING. LIGHTNING IS
THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN
SHELTERS OFFER NO PROTECTION. SEEK SHELTER IN A SAFE BUILDING UNTIL
THE STORM PASSES.

LAT...LON 2540 8096 2554 8106 2555 8106 2556 8108
      2559 8110 2572 8115 2580 8114 2581 8087
      2589 8087 2579 8082 2550 8063
TIME...MOT...LOC 2013Z 252DEG 4KT 2581 8101 2576 8097
          2554 8086

AK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
416 PM EDT SUN JUL 17 2011

FLZ069-070-075-172100-
COASTAL COLLIER COUNTY FL INLAND COLLIER COUNTY FL MAINLAND MONROE FL
416 PM EDT SUN JUL 17 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN COLLIER COUNTY
  EXTREME NORTHWESTERN MONROE COUNTY

* UNTIL 500 PM EDT

* AT 414 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES
  WEST OF BIG CYPRESS NATIONAL PRESERVE TO OASIS RANGER STATION...AND
  MOVING SOUTHWEST AT 5 MPH.

* THE LINE OF STORMS WILL AFFECT...
  MONROE STATION...
  AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 T0 55
MPH...SMALL 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.

LAT...LON 2608 8113 2581 8088 2580 8125 2599 8136
TIME...MOT...LOC 2016Z 045DEG 3KT 2598 8120 2584 8106

AK

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