Special Marine Warning 252, NWS Miami, FL

000 
FZUS72 KMFL 132001
MWSMFL

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
359 PM EDT THU SEP 13 2007

AMZ610-132030-
/O.CON.KMFL.MA.W.0252.000000T0000Z-070913T2030Z/
359 PM EDT THU SEP 13 2007

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 430 PM EDT...

FOR THE FOLLOWING AREA...
  LAKE OKEECHOBEE

AT 355 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE STORM OVER FAR EASTERN LAKE OKEECHOBEE HAD DISSIPATED...BUT 
STORM OUTFLOW COULD STILL RESULT IN GUSTY WINDS TO 34 KNOTS OR MORE. 
ADDITIONAL THUNDERSTORMS WERE DEVELOPING FROM BETWEEN  PORT 
MAYACA AND BELLE GLADE. THESE STORMS WERE MOVING WEST AT 15 MPH AND 
WILL EVENTUALLY MOVE OVER LAKE OKEECHOBEE.

THIS STRONG THUNDERSTORM WILL ALSO AFFECT

PAHOKEE...
LAKE HARBOR...

AND SURROUNDING COASTAL AREAS.

AS THUNDERSTORMS MOVE OVER THE WATER...BOATERS CAN EXPECT STRONG
GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING...AND HEAVY RAIN. STAY
IN SAFE HARBOR OR CLOSE TO SHORE UNTIL THE STORM PASSES. IF CAUGHT ON
THE OPEN WATER...MAKE SURE ALL SAFETY GEAR IS AVAILABLE AND LIFE
JACKETS ARE BEING WORN BY YOU AND YOUR CREW.

LAT...LON 2709 8061 2690 8056 2667 8074 2676 8093
      2688 8108 2702 8104 2709 8098
TIME...MOT...LOC 1959Z 086DEG 14KT 2698 8081

$$

GREGORIA

000 
FZUS72 KMFL 132025
MWSMFL

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
423 PM EDT THU SEP 13 2007

AMZ610-132033-
/O.EXP.KMFL.MA.W.0252.000000T0000Z-070913T2030Z/
423 PM EDT THU SEP 13 2007

...SPECIAL MARINE WARNING EXPIRES AT 430 PM EDT...

THE AFFECTED AREA WAS...
  LAKE OKEECHOBEE

DOPPLER RADAR INDICATED THAT THE STORM THAT PROMPTED THE SPECIAL 
MARINE WARNING HAD WEAKENED. THEREFORE...THE SPECIAL MARINE WARNING 
WILL BE ALLOWED TO EXPIRE AT 430 PM EDT. 

HOWEVER...THUNDERSTORMS DO CONTINUE OVER EASTERN SECTIONS OF THE 
LAKE...BUT THEY CONTINUE TO WEAKEN. STILL...MARINERS CAN EXPECT 
GUSTY WINDS OF AROUND 25 KNOTS OVER THE NEXT HOUR ALONG WITH 
DANGEROUS LIGHTNING STRIKES.

LAT...LON 2709 8061 2690 8056 2667 8074 2676 8093
      2688 8108 2702 8104 2709 8098
TIME...MOT...LOC 2023Z 086DEG 14KT 2697 8091

$$

GREGORIA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
215 PM EDT THU SEP 13 2007

.DISCUSSION...CURRENTLY HIGH PRESSURE RIDGING AT THE LOWER AND MID
LEVELS SITTING OVER CENTRAL FLORIDA. CONVECTION HAS TAKEN AWHILE
TO GET GOING TODAY WITH POSSIBLY SOME DRYER AIR FILTERING INTO THE
MID LEVELS. THE GROUND BASED GPS PWATS SHOWS AT LEAST A QUARTER
INCH DECREASE SINCE THE SOUNDING VALUES OF 2.07 THIS MORNING. BUT
ATTM, THEY HAVE STARTED TO TAKE OFF OVER THE INTERIOR AND WEST.

BY SATURDAY, A STRONG MID LEVEL TROUGH WILL DIG INTO THE EASTERN
U.S. POPS WILL BE A BIT LOWER BEFORE THE TROUGH REACHES THE AREA
DUE TO SOME DRYER AIR. THEN BY EARLY NEXT WEEK, A MID LEVEL RIDGE
BUILDS OVER THE LOWER MISSISSIPPI VALLEY REGION AND THEN A CUTOFF
H5 LOW PUSHES SOUTH OVER THE SOUTHEAST U.S. COASTAL WATERS AND
THEN TURNS WEST THROUGH CENTRAL FL EARLY WED AND INTO THE GULF OF
MEXICO THU. THIS MID LEVEL LOW WILL INDUCE AN INVERTED TROUGH AND
THIS WILL MOVE WITH THE H5 LOW. COOLER AIR IN THE MID LEVELS FROM
THIS LOW MAY AID IN STRONG THUNDERSTORMS BY MID WEEK. WILL NOT GO
HIGHER THAN 40% ATTM.

&&

.AVIATION...SCATTERED SHOWERS AND THUNDERSTORM WILL CONTINUE TO DEVELOP
OVER INTERIOR AND WEST COAST SECTIONS OF S FL THIS AFTERNOON AND
EVENING...HOWEVER MOSTLY VFR CONDITIONS ARE STILL EXPECTED. APF
IS THE SITE MOST LIKELY TO RECEIVE BRIEF PERIODS MVFR OR POSSIBLY
EVEN IFR CONDITIONS AS THE SEA BREEZE SLOWLY PUSHES INLAND.
TONIGHT CONVECTION WILL BE POSSIBLE OVER THE ATLANTIC WATERS AS
THE NORTHERN END OF A TROPICAL WAVE SPREADS OVER THE AREA AND SOME
OF THIS ACTIVITY MAY MOVE TO NEAR THE COAST. VCTS HAS BEEN LEFT IN
THE EAST COAST TAFS TONIGHT WITH MENTION OF TS DROPPING OUT BY 2Z
FOR APF.

&&

.MARINE...LIGHT EASTERLY WINDS THROUGH THE WEEKEND. THEN A NE
WIND DEVELOPS EARLY NEXT WEEK AND INCREASES A BIT. THIS BUILDS
THE GULF STREAM SEAS UP TO AS HIGH AS 4 FEET. POSSIBLY RIP
CURRENTS MAY DEVELOP AS WELL NEXT WEEK.

&&

.FIRE WEATHER...NO CONCERNS HERE AS AFTN RHS ABOVE CRITICAL
VALUES.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  77  90  78  90 / 30 40 20 20
FORT LAUDERDALE  79  91  78  90 / 30 40 20 20
MIAMI            78  92  78  91 / 30 40 20 20
NAPLES           74  91  75  92 / 20 40 30 30

&&

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

LONG TERM...18/GR
SHORT TERM/AVIATION...04/AT

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
614 AM EDT THU SEP 13 2007

FLZ063-066>075-168-172>174-132215-
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-
614 AM EDT THU SEP 13 2007

...MODERATE RISK OF LIGHTNING ALL AREAS TODAY...
...MODERATE RISK OF WATERSPOUTS ATLANTIC WATERS...
...SLIGHT RISK OF WIND AND HAIL INTERIOR...
...HEAT INDICES OF 100 TO 105 TODAY INTERIOR...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS: THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF
MAINLAND SOUTH FLORIDA AND THE ADJACENT COASTAL WATERS TODAY.
LIGHTNING STRIKES WILL BE THE PRIMARY HAZARD.

WATERSPOUTS: ATMOSPHERIC CONDITIONS WILL BE FAVORABLE FOR THE
FORMATION OF WATERSPOUTS...ESPECIALLY THIS MORNING...ACROSS THE
LOCAL ATLANTIC WATERS.

WIND: THE STRONGEST THUNDERSTORMS THIS AFTERNOON WILL BE CAPABLE
OF PRODUCING WIND GUSTS UP TO 50 MPH.

HAIL: THE STRONGEST THUNDERSTORMS THIS AFTERNOON WILL BE CAPABLE
OF PRODUCING HAIL UP TO THE SIZE OF DIMES.

TEMPERATURES: LATE MORNING AND AFTERNOON HEAT INDEX VALUES WILL
APPROACH THE 100 TO 105 DEGREE RANGE ACROSS THE INTERIOR PORTION
OF MAINLAND SOUTH FLORIDA TODAY. TAKE PRECAUTIONS TO AVOID
EXPOSURE TO THE HIGH HEAT INDICES EXPECTED THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SCATTERED THUNDERSTORMS WILL BE POSSIBLE EACH DAY THROUGH
WEDNESDAY. LIGHTNING STRIKES AND LOCALLY HEAVY RAINFALL WILL BE
THE MAIN THREATS WITH ANY THUNDERSTORM ACTIVITY OVER THE UPCOMING
WEEK.

OTHERWISE...A DEVELOPING AREA OF LOW PRESSURE ACROSS THE
SOUTHEASTERN UNITED STATES WILL PROVIDE AN INCREASE IN NORTHEAST
WINDS TO THE AREA BY LATE IN THE WEEKEND. THIS WILL ALLOW FOR AN
INCREASING THREAT OF RIP CURRENTS ALONG THE ATLANTIC COAST BEACHES
THROUGH THE MIDDLE OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BE NEEDED ACROSS THE INTERIOR AND
WESTERN PORTIONS OF SOUTH FLORIDA THIS AFTERNOON.

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

70/DD