583
FXUS62 KKEY 211543
AFDKEY
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
1043 AM EST SAT DEC 21 2024
..NEW DISCUSSION, MARINE, AVIATION
DISCUSSION
ISSUED AT 1006 AM EST SAT DEC 21 2024
A ZONALLY STRETCHED HIGH PRESSURE SYSTEM CENTERED OVER THE MIDWEST
STRETCHES SOUTH TO NEAR THE LOUISIANA GULF COAST. SPC'S 925MB
TEMPERATURE ADVECTION ANALYSIS SUGGESTS PATCHY COLD AIR ADVECTION
ACROSS MUCH OF THE EASTERN UNITED STATES, AIDED BY THE MID-
LATITUDE STORM SYSTEM OCCLUDING OVER THE NORTHERN ATLANTIC.
NORTHERLY WINDS AROUND SUNRISE BRIEFLY WERE NEAR 20 KNOTS AT THE
REEF, BUT HAVE SINCE DECREASED TO NEAR 15 KNOTS. TEMPERATURES FELL
INTO THE MID 50S ACROSS THE UPPER KEYS EARLY THIS MORNING, WHILE
LOCATIONS IN THE LOWER KEYS REACHED THE LOWER 60S. HIGH
TEMPERATURES WILL STRUGGLE TO REACH 70 THIS AFTERNOON AND BREEZES
SHOULD RELAX A BIT. RAIN CHANCES ARE NIL. THE INHERITED FORECAST
REMAINS ON TRACK.
MARINE
ISSUED AT 1006 AM EST SAT DEC 21 2024
THERE ARE NO WATCHES, WARNINGS, OR ADVISORIES CURRENTLY IN EFFECT
FOR THE COASTAL WATERS OF THE FLORIDA KEYS. FROM SYNOPSIS, A
BROAD HIGH PRESSURE SYSTEM WILL SLIDE ACROSS THE EASTERN UNITED
STATES TODAY THROUGH SUNDAY, RESULTING IN BREEZES GRADUALLY
CLOCKING AROUND TO THE NORTHEAST. EARLY NEXT WEEK A COASTAL TROUGH
WILL DEVELOP FROM THE CAROLINAS SOUTH TO THE FLORIDA PENINSULA.
THIS WILL RESULT IN A BRIEF PERIOD OF FRESHENING NORTHEAST TO EAST
BREEZES. A SECOND, STRONG HIGH PRESSURE SYSTEM WILL SETTLE INTO
THE EASTERN SEABOARD TOWARDS MIDWEEK RESULTING IN ANOTHER PERIOD
OF FRESHENING BREEZES WITH THE POTENTIAL FOR FRESH TO OCCASIONALLY
STRONG BREEZES.
AVIATION
(15Z TAFS)
ISSUED AT 1006 AM EST SAT DEC 21 2024
VFR CONDITIONS WILL PREVAIL THROUGH TONIGHT. EYW MAY SEE INCREASED
SKY COVERAGE AFTER SUNSET DUE TO ITS PROXIMITY TO THE OBSERVED COLD-
ADVECTION CLOUD FIELD IN SATELLITE, BUT BOTH COVERAGE AND CLOUD
BASES WILL REMAIN WITHIN VFR CATEGORIES. WINDS WILL CONTINUE TO BE
NORTHERLY, WITH GUSTS NEAR 20 KTS UNTIL AFTER SUNSET.
PRELIMINARY POINT TEMPS/POPS
KEY WEST 70 61 74 66 / 0 0 0 0
MARATHON 70 61 74 67 / 0 0 0 0
KEY WATCHES/WARNINGS/ADVISORIES
FL...NONE.
GM...NONE.
PUBLIC/MARINE/FIRE...CLR
AVIATION/NOWCASTS....MC
DATA ACQUISITION.....MC
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