Wind Chill Advisory 3, NWS Miami, FL

000 
WWUS42 KMFL 041403
WSWMFL

URGENT - WINTER WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
903 AM EST FRI JAN 4 2008

...WIND CHILL ADVISORY EXPIRED AT 8 AM EST THIS MORNING FOR GLADES 
COUNTY...

FLZ063-041415-
/O.EXP.KMFL.WC.Y.0003.080104T0800Z-080104T1300Z/
GLADES-
INCLUDING THE CITIES OF...PALMDALE...MOORE HAVEN
903 AM EST FRI JAN 4 2008

...WIND CHILL ADVISORY EXPIRED AT 8 AM EST THIS MORNING FOR GLADES 
COUNTY...

THE WIND CHILL ADVISORY IS NO LONGER IN EFFECT.

TEMPERATURES HAVE WARMED INTO THE UPPER 40S ACROSS THE ADVISORY AREA 
THIS MORNING.  THEREFORE...THE WIND CHILL ADVISORY IS NO LONGER IN 
EFFECT.

$$

70/DD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
1013 PM EST THU JAN 3 2008

.UPDATE...FCST IS MOSTLY ON TRACK TONIGHT...EXCEPT EXTENDED THE
CLOUDINESS FURTHER INLAND THROUGH THE OVERNIGHT BASED ON LATEST
SAT IMAGERY. ISOLATED LIGHT SHOWERS AND SPRINKLES CONTINUE TO
AFFECT THE EAST COAST...STREAMING IN FROM OFF OF THE ATLANTIC.
THIS WAS HANDLED WELL WITH THE INHERITED FCST...SO NO CHANGES
HERE. TEMPS LOOK ON TRACK AS WELL. NOT NEARLY AS COLD AS LAST
NIGHT WITH 40S EXCEPT 50S ATLANTIC COAST. COULD GO TO NEAR 40 FAR
NW...BUT NOT EXPECTING ANYTHING FURTHER GIVEN THE CLOUDS AND
SLOWLY VEERING WIND FLOW. WINDS HAVE NOT TURNED AROUND TO NE AS
FAST AS MODELS FCST...BUT MBF WINDS HAVE PICKED UP OUT OF THE NE.
DO FOR NOW KEPT WITH THE IDEA OF WINDS SWINGING AROUND. /GREGORIA

&&

.AVIATION...MAIN FORECAST CONCERN TONIGHT WILL BE WHEN SFC WINDS
SHIFT TO ONSHORE AT THE REMAINING EAST COAST TERMINALS. KPBI AND
KFLL HAVE ALREADY SHIFTED...AND EXPECT OTHER SITES TO FOLLOW SUIT
OVER THE NEXT SEVERAL HOURS AS INDICATED IN THE TAFS...WITH THE
SHIFT OCCURRING BY 06Z ALL TERMINALS. UNTIL THIS SHIFT...SITES
WHERE THE WIND STAYS NW WILL HAVE LOW LEVEL WIND SHEAR AS WINDS
AROUND 2000 FEET ARE FROM 040/050 DEGREES AT 30-35 KNOTS.
OTHERWISE NEARLY SOLID WALL OF COLD MARINE STRATOCU CONTINUES TO
PUSH ACROSS THE REGION AND THIS SHOULD LAST OVERNIGHT WITH BKN-
OVERCAST LAYER AROUND 5500 FEET EXPECTED. A FEW LIGHT SHOWERS WILL
FALL OUT OF THE CLOUDS FROM TIME TO TIME OVERNIGHT ACROSS THE
METRO AREAS/VICINITY OF ALL EASTERN TERMINALS, SO HAVE CARRIED
VCSH OVERNIGHT. /STRASSBERG

&&

.PREV DISCUSSION... /ISSUED 231 PM EST THU JAN 3 2008/

DISCUSSION...THE CANADIAN RIDGE OF HIGH PRESSURE CENTERED OVER
THE EASTERN STATES CONTINUES IT EASTWARD TREK PUMPING COLD DRY AIR
INTO THE SOUTHEASTERN STATES. SIMILAR TO LAKE EFFECT IN THE UPPER
MIDWEST... THERE WAS EVEN A REPORT OF STEAM RISING OFF THE
ATLANTIC COAST THIS MORNING AS THE COLD (+/- 35) AIR MOVED OVER
THE ATLANTIC (+/- 75)... THIS WILL CONTINUE TO CREATE LOW TOPPED
SHOWERS OVER THE ATLANTIC THROUGH TONIGHT AND INTO THE NEXT COUPLE
OF DAYS. AS THE HIGH SHIFTS EAST SOME OF THESE SHOWERS AND
STRATOCU WILL BE PUSHED ONSHORE AS THE FLOW GRADUALLY BECOMES
NORTHEAST THEN EAST. THIS WILL ALSO KEEP SOUTH FLORIDA IN A
WARMING TREND AS THE WARMER AND MOIST MARINE LAYER IS PUSHED OVER
S FL.

THROUGH THE EXTENDED... THE RIDGE IS EXPECTED TO SLOWLY SHIFT EAST
AND INTO THE ATLANTIC AND SLOWLY WEAKEN... HOWEVER THE RIDGE IS
EXPECTED TO REMAIN IN CONTROL OF S FL WX THROUGH THE MIDDLE OF THE
COMING WEEK. THIS IS EXPECTED TO KEEP A DEEP EASTERLY FLOW OVER
THE AREA WITH ISOLD SHOWERS POSSIBLE... ESPECIALLY OVER THE
ATLANTIC WATERS, IMMEDIATE EAST COAST, AND EAST COAST METROS.

AVIATION...WILL HOLD ONTO A BROKEN LAYER OF MARINE LAYER COLD AIR STRATOCUMULUS
AT ALL METRO SOUTHEAST FLORIDA AIRFIELDS WITH BROKEN CEILINGS 5 TO 6
THSD FEET. ISOLATED SPRINKLES/SHOWERS WILL ACCOMPANY THESE CLOUDS AT
TIMES. STUBBORN NORTHERLY WINDS BLOWING PERPENDICULARLY TO MOST
EAST-WEST RUNWAYS WILL ULTIMATELY BECOME NORTHEAST BY EVENING. FOR
KAPF, VFR CONDITIONS WILL CONTINUE WITH A FEW SCATTERED
STRATOCUMULUS CLOUDS FINALLY FLOATING IN AOA 5 THSD FEET. SCATTERED
TO BROKEN STRATOCUMULUS 4 TO 5 THSD FEET IS EXPECTED AT INLAND
LOCATIONS THROUGH THE NIGHT.

MARINE...THE GRADIENT IS EXPECTED TO SLOWLY RELAX OVER THE NEXT
COUPLE OF DAYS... HOWEVER WINDS WILL STILL REMAIN ABOVE 20 KNOTS
THROUGH TONIGHT. DURING FRIDAY AND INTO SATURDAY MORNING SCA WILL
WILL SLOWLY BE LOWERED ZONE BAY ZONE AS THE GRADIENT RELAXES...
HOWEVER WINDS ARE STILL EXPECTED TO REMAIN AT OR ABOVE 15 KNOTS...
ESPECIALLY OVER THE ATLANTIC... INTO THE MIDDLE OF THE COMING WEEK.

FIRE WEATHER...MOISTURE IS SLOWLY RECOVERING ACROSS S FL THIS
AFTERNOON, BUT RED FLAG WILL REMAIN POSTED UNTIL 23Z FOR THE
NORTHWEST INTERIOR SECTIONS. RHS REMAIN IN THE 30 TO 40% RANGE IN
THAT AREA. AFTER TODAY THE EAST FLOW OFF THE ATLANTIC SHOULD KEEP
MOST FIRE WEATHER CONCERNS SUPPRESSED THROUGH THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  52  68  60  74 / 10 20 10 10
FORT LAUDERDALE  54  70  62  75 / 10 20 10 10
MIAMI            54  70  61  76 / 10 10 10 10
NAPLES           43  69  53  77 / -  -  -  -

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...SMALL CRAFT ADVISORY UNTIL 10 AM EST SATURDAY FOR AMZ650-AMZ651-
     AMZ670-AMZ671.

     SMALL CRAFT ADVISORY UNTIL 7 AM EST FRIDAY FOR AMZ610.

     SMALL CRAFT ADVISORY UNTIL 1 PM EST FRIDAY FOR AMZ630.

GM...SMALL CRAFT ADVISORY UNTIL 4 PM EST FRIDAY FOR GMZ676.

     SMALL CRAFT ADVISORY UNTIL 7 AM EST FRIDAY FOR GMZ656-GMZ657.

&&

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
634 PM EST THU JAN 3 2008

FLZ063-066>075-168-172>174-041100-
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-
634 PM EST THU JAN 3 2008

...WIND CHILLS IN THE 30S INTERIOR/GULF COAST OVERNIGHT...
...HAZARDOUS MARINE CONDITIONS CONTINUE, ESPECIALLY IN THE GULF STREAM...
...INCREASING RISK OF RIP CURRENTS ATLANTIC BEACHES TONIGHT/FRIDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TONIGHT

TEMPERATURES: LOWS TEMPERATURES ACROSS INTERIOR AND GULF COASTAL
LOCATIONS WILL FALL INTO THE UPPER 30S TO MID 40S, BUT A NORTH WIND
OF NEAR 10 MPH WILL MAKE IT FEEL ABOUT 5 DEGREES COLDER THAN THE AIR
TEMP OVERNIGHT.

RIP CURRENTS: AS THE WINDS COME AROUND TO A MORE NORTHEAST DIRECTION
TONIGHT, THE DANGER OF RIP CURRENTS WILL INCREASE AT ALL ATLANTIC
BEACHES.

WIND: WINDS OF UP TO 25 KNOTS ALONG WITH HIGHER GUSTS ARE EXPECTED
ACROSS THE LOCAL WATERS TONIGHT.

WAVES: SEAS IN THE GULF STREAM WILL BE IN THE 10 TO 14 FOOT RANGE
TONIGHT. ACROSS THE REST OF THE ATLANTIC WATERS AND OFFSHORE GULF
WATERS, SEAS OF 6 TO 8 FEET ARE EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

MODERATE NORTHEAST TO EAST WINDS WILL CONTINUE FRIDAY INTO THE
WEEKEND. THIS WILL INCREASE THE RISK OF DANGEROUS RIP CURRENTS
AT ALL ATLANTIC BEACHES FROM FRIDAY THROUGH THE UPCOMING WEEKEND.
SEAS IN THE GULF STREAM WILL CONTINUE IN EXCESS OF 7 FEET INTO THE
FIRST PART OF THE WEEKEND BEFORE SUBSIDING TO LESS THAN 7 FEET BY
LATE SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

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

GREGORIA