Red Flag Warning 26, NWS Miami, FL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
403 AM EST FRI MAR 5 2010

.DISCUSSION...
A COLD...DRY AND STABLE LOCAL ATMOSPHERE CONTINUES TO PERSIST
ACROSS THE REGION. REGIONAL OBSERVATIONS INDICATE TEMPERATURES
IN AREAS OF THE NORTHWEST INTERIOR WEST OF LAKE OKEECHOBEE HAVE
ALREADY DIPPED JUST BELOW FREEZING. THEREFORE WILL CONTINUE THE
FREEZE WARNING CURRENTLY IN EFFECT FOR GLADES-HENDRY- INLAND
COLLIER-INLAND PALM BEACH. IN ADDITION WILL CONTINUE THE FROST
ADVISORY CURRENTLY IN EFFECT FOR INLAND BROWARD-INLAND MIAMI DADE.

THE RECENT GUIDANCE SUGGESTED THAT MINIMUM TEMPERATURES COULD
REACH THE LOWER 30S IN THE NORTHWEST INTERIOR WEST OF LAKE OKEECHOBEE
BY EARLY SATURDAY MORNING. HOWEVER...THE UPPER LEVEL MOISTURE AND
CIRRUS CLOUDS ACROSS THE EASTERN PACIFIC AND STREAMING ACROSS THE
GULF COULD HAVE MORE COVERAGE ACROSS SOUTH FLORIDA BY FRIDAY
NIGHT. THEREFORE THE MINIMUM TEMPERATURES ACROSS THE NORTHWEST
INTERIOR AND THE REST OF THE PENINSULA ARE A BIT HIGHER THAN THE
GUIDANCE.

THE FLORIDA PENINSULA IS FORECAST TO REMAIN UNDER THE INFLUENCE OF
HIGH PRESSURE WITH LITTLE CHANCE OF PRECIP THROUGH MONDAY. BY
TUESDAY ISOLATED SHOWERS ARE POSSIBLE ACROSS THE REGION AS LOW
LEVEL SOUTH TO SOUTHWESTERLY FLOW IS FORECAST TO BRING SOME LOW
LEVEL MOISTURE FROM THE GULF AND ACROSS THE SOUTH FLORIDA
PENINSULA...WITH THIS PATTERN AND ADDITIONAL CHANCES OF ISOLATED
PRECIP FORECAST TO PERSIST INTO WEDNESDAY. TEMPERATURES ACROSS
SOUTH FLORIDA WILL SLOWLY BEGIN TO CLIMB THROUGH THE
WEEKEND...WITH HIGHS NEAR 70 EXPECTED BY SATURDAY AND IN THE MID
70S BY SUNDAY.

&&

.MARINE...
NORTHWESTERLY WINDS NEAR 15 KNOTS ARE EXPECTED OVER THE OFF SHORE
ATLANTIC AND GULF WATERS THIS MORNING...WITH THE GULF STREAM SEAS
NEAR 5 TO 6 FEET AND THE OFF SHORE GULF WATERS NEAR 5 FEET.
TONIGHT AS THE WINDS BECOME MORE NORTHERLY...THE GULF STREAM SEAS
ARE FORECAST TO BUILD NEAR 7 FEET BY EARLY SATURDAY...WITH A SMALL
CRAFT ADVISORY POSSIBLY REQUIRED LATER TODAY FOR EARLY SATURDAY.

LONG PERIOD NORTHEAST SWELL NEAR 1 TO 2 FEET ARE EXPECTED TO
ENTER THE ATLANTIC WATERS EAST OF PALM BEACH COUNTY LATER TODAY AND
COULD PERSIST THROUGH MONDAY WITH ADDITIONAL LONG PERIOD SWELL
EXPECTED TO ENTER THE ATLANTIC WATERS AFTER MONDAY.

&&

.FIRE WEATHER...
A COLD AND STABLE DRY AIR MASS CONTINUES ACROSS THE REGION. THE
COMBINATION OF MAXIMUM TEMPERATURES EXPECTED TO REACH THE MID TO
UPPER 60S TODAY AND DEW POINTS IN THE IN LOW TO MID 30S...WITH
DRIER AIR MIXING DOWN...SHOULD RESULT IN RELATIVE HUMIDITIES
GOING BELOW 35 PERCENT FOR 4 OR MORE HOURS ACROSS THE ENTIRE CWA.
THEREFORE...ALL FIRE WEATHER ZONES HAVE A RED FLAG WARNING IN
EFFECT FOR LATE MORNING THROUGH EARLY EVENING. FOR SATURDAY...A
FIRE WEATHER WATCH IS IN EFFECT FOR ALL COUNTIES EXCEPT MAINLAND
MONROE AND MIAMI DADE COUNTIES...FOR RELATIVE HUMIDITIES BELOW 35
PERCENT FOR 4 OR MORE HOURS.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  66  45  69  48 / 0 -  -  -
FORT LAUDERDALE  67  48  70  51 / 0 -  -  -
MIAMI            67  48  70  49 / 0 -  -  -
NAPLES           66  43  67  45 / 0 -  -  0

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...FROST ADVISORY UNTIL 8 AM EST THIS MORNING FOR INLAND BROWARD-
     INLAND MIAMI DADE.

     RED FLAG WARNING FROM 11 AM THIS MORNING TO 6 PM EST THIS
     EVENING FOR COASTAL BROWARD-COASTAL COLLIER-COASTAL MIAMI
     DADE-COASTAL PALM BEACH-FAR SOUTH MIAMI DADE-GLADES-HENDRY-
     INLAND BROWARD-INLAND COLLIER-INLAND MIAMI DADE-INLAND PALM
     BEACH-MAINLAND MONROE-METRO BROWARD-METRO MIAMI DADE-METRO
     PALM BEACH.

     FIRE WEATHER WATCH FROM SATURDAY MORNING THROUGH SATURDAY
     AFTERNOON FOR COASTAL BROWARD-COASTAL COLLIER-COASTAL PALM
     BEACH-GLADES-HENDRY-INLAND BROWARD-INLAND COLLIER-INLAND
     PALM BEACH-METRO BROWARD-METRO PALM BEACH.

     FREEZE WARNING UNTIL 8 AM EST THIS MORNING FOR GLADES-HENDRY-
     INLAND COLLIER-INLAND PALM BEACH.

AM...NONE.
GM...NONE.
&&

LONG TERM...60/BD
SHORT TERM/AVIATION...70/DD

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
606 AM EST FRI MAR 5 2010

FLZ063-066>075-168-172>174-061100-
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-
606 AM EST FRI MAR 5 2010

...FREEZE WARNING LAKE REGION UNTIL 8 AM EST...
...FROST ADVISORY INTERIOR BROWARD/MIAMI-DADE UNTIL 8 AM EST...
...WIND CHILLS 35 TO 40 DEGREES ATLANTIC COAST THIS MORNING...
...INCREASINGLY HAZARDOUS CONDITIONS ATLANTIC WATERS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

TEMPERATURES: COLD TEMPERATURES WILL PREVAIL ACROSS SOUTH FLORIDA
EARLY THIS MORNING, WITH TEMPERATURES EXPECTED TO REMAIN IN THE
LOWER TO MID 30S IN THE REGION SURROUNDING LAKE OKEECHOBEE. ACROSS
THE REMAINDER OF SOUTH FLORIDA, AIR TEMPERATURES WILL RANGE FROM
THE UPPER 30S TO MID 40S. HOWEVER, A LIGHT TO MODERATE NORTHWEST
BREEZE ALONG THE ATLANTIC COAST WILL RESULT IN COLD WIND CHILLS
RANGING FROM 35 TO 40 DEGREES. AREAS OF FROST WILL ALSO BE
POSSIBLE ACROSS MUCH OF INTERIOR SOUTH FLORIDA, WITH PATCHY FROST
POSSIBLE ELSEWHERE, EXCEPT ALONG THE IMMEDIATE ATLANTIC AND GULF
COASTS.

WAVES: SEAS IN THE GULF STREAM WILL RISE INTO THE 4 TO 6 FOOT
RANGE TODAY, AS NORTHERLY WINDS PERSIST ACROSS THE ATLANTIC
WATERS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ANOTHER COLD MORNING CAN BE EXPECTED ACROSS SOUTH FLORIDA ON
SATURDAY, WITH LOW TEMPERATURES RANGING FROM THE MID 30S TO
AROUND 40 ACROSS THE INTERIOR, TO THE LOWER TO MID 40S ALONG EACH
COAST. PATCHY FROST WILL BE POSSIBLE IN THE REGION WEST OF THE
LAKE ONCE AGAIN ON SATURDAY MORNING.

OTHERWISE, EXPECT DETERIORATING MARINE CONDITIONS IN THE ATLANTIC
WATERS THROUGH THE WEEK, AS SEAS RISE TO 5 TO 7 FEET IN THE GULF
STREAM. AN INCREASING NORTHEAST SWELL, COUPLED WITH EASTERLY FLOW
RETURNING TO THE REGION WILL RESULT IN A HIGHER THREAT FOR RIP
CURRENTS ALONG THE ATLANTIC COAST BY THE MIDDLE OF NEXT WEEK.

.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.

70/DD