824
FXUS62 KKEY 091406
AFDKEY
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
1006 AM EDT SUN MAR 9 2025
..NEW DISCUSSION, MARINE, AVIATION
DISCUSSION
ISSUED AT 835 AM EDT SUN MAR 9 2025
ANOTHER UNEVENTFUL AFTERNOON EXPECTED FOR THE FLORIDA KEYS TODAY.
THE ATLANTIC HIGH IS RATHER WEAK THANKS TO A PRONOUNCED GALE WEST
OF NEW ENGLAND, AND UPPER ALTITUDE WINDS ARE CONTRIBUTING TO A
CONSIDERABLE AMOUNT OF SUBSIDENCE THIS MORNING. LIGHT,
OCCASIONALLY VARIABLE, SOUTHERLIES ALSO SUGGEST ANOTHER CUBAN
INHIBITION LAYER MAY DEVELOP OVER THE CWA THIS AFTERNOON. THE
MORNING KKEY BALLOON SAMPLED AN EXTREMELY DRY ENVIRONMENT ABOVE
ABOUT 4000 TO 5000 FEET, BUT THE PWAT VALUE MEASURED WAS NEAR THE
37TH PERCENTILE FOR THE DAY; HIGHER THAN ANTICIPATED GIVEN THE
LACK OF CLOUD COVER.
THE RESULT IS THAT TEMPERATURES ARE RISING ACROSS THE ISLAND
CHAIN INTO THE UPPER 70S, ON TRACK TO REACH THE LOWER 80S. DEW
POINTS ARE SAFELY IN THE LOWER 70S SO BRACE FOR MORE HUMIDITY.
OVERALL, SUNDAY AFTERNOON WILL BE ANOTHER GREAT DAY FOR BOATING,
SO ENJOY SUNNY SKIES AND LIGHT WINDS BEFORE TOMORROW'S COLD FRONT.
MARINE
ISSUED AT 835 AM EDT SUN MAR 9 2025
FROM SYNOPSIS, LIGHT TO GENTLE MAINLY SOUTH BREEZES ARE EXPECTED
THIS AFTERNOON, LULLING AHEAD OF THE EVENING HOURS, BEFORE
MODESTLY FRESHENING OUT OF THE SOUTH TONIGHT. A LOW PRESSURE
SYSTEM DEVELOPING THIS AFTERNOON, WHILE MOVING EASTWARD ALONG THE
NORTHERN GULF COAST, WILL RESULT IN A COLD FRONTAL PASSAGE ACROSS
THE FLORIDA KEYS LATE MONDAY WITH GREATER CONFIDENCE FOR SHOWERS
AND THUNDERSTORMS MONDAY AFTERNOON. BREEZES WILL RAPIDLY VEER FROM
SOUTHWESTERLY TO NORTHWESTERLY AND FRESHEN CONSIDERABLY ACROSS
ALL MARINE WATERS. POST COLD FRONT, EXPECT BREEZES TO SLACKEN TO
GENTLE TO MODERATE AND VEER EASTERLY BY MID WEEK AS HIGH PRESSURE
BUILDS OVER THE GULF
AVIATION
(12Z TAFS)
ISSUED AT 835 AM EDT SUN MAR 9 2025
VFR AND DRY CONDITIONS WILL PREVAIL AT BOTH EYW AND MTH TODAY.
NEAR SURFACE WINDS WILL BE GENERALLY OUT OF THE SOUTH AT 5 TO 10
KNOTS, BECOMING LIGHT AND VARIABLE LATER THIS AFTERNOON BEFORE
FRESHENING OVERNIGHT.
CLIMATE
ON THIS DAY IN FLORIDA KEYS WEATHER HISTORY, IN 1998, 3.20" OF RAIN
FELL AT MARATHON. THIS WAS THE THIRD-WETTEST MARCH DAY ON RECORD FOR
MARATHON. RAINFALL RECORDS FOR MARATHON DATE BACK TO 1950.
PRELIMINARY POINT TEMPS/POPS
KEY WEST 82 73 81 66 / 0 20 50 10
MARATHON 82 73 83 64 / 0 10 50 20
KEY WATCHES/WARNINGS/ADVISORIES
FL...NONE.
GM...NONE.
PUBLIC/MARINE/FIRE...AJP
AVIATION/NOWCASTS....JAM
DATA ACQUISITION.....JAM
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