520
FXUS62 KKEY 190223
AFDKEY
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
1023 PM EDT THU SEP 18 2025
..NEW DISCUSSION, MARINE, AVIATION
DISCUSSION
ISSUED AT 924 PM EDT THU SEP 18 2025
THE KEYS REMAIN IN A RATHER WET PATTERN THIS EVENING DUE TO
UPPER TROUGHING OVER THE GULF AND PRECIPITABLE WATER REMAINING
QUITE HIGH AT AROUND 2.2 INCHES. CAPE HAS BEEN MODEST WITH SOME
DRIER AIR CREEPING IN THROUGH THE LAYERS ABOVE 500 MB. THERE WAS
AN ABUNDANCE OF BOUNDARIES THIS EVENING AND PROVIDED A TRIGGER FOR
SCATTERED TO NUMEROUS SHOWERS ACROSS THE KEYS AND SURROUNDING
WATERS. HOWEVER, THUNDERSTORMS HAVE BEEN LIMITED AND SHORT LIVED.
DEEP LAYERED MOISTURE IS EXPECTED TO REMAIN ABOUT THE SAME THROUGH
THE OVERNIGHT PERIOD, AS IS THE TROUGH ALOFT. HOWEVER, THE LOWER
BROAD LOWER TROUGH OVER THE BAHAMAS IS EXPECTED TO SHARPEN SOME
ALLOWING THE OUTER FRINGES OF A MODEST HIGH CENTERED NEAR THE
CENTRAL GULF COAST TO BECOME MORE DOMINANT ACROSS THE AREA. THIS
ALONG WITH THE CURRENT OUTFLOW BOUNDARY WORKING ITS WAY SOUTHWARD
THROUGH THE KEYS AND ADJACENT WATERS SHOULD RESULT IN A QUIETER
SPELL FOR THE ISLAND CHAIN IN THE UPCOMING HOURS. MAY CONSIDER
NUDGING POPS DOWN FOR THE BALANCE OF THE OVERNIGHT. WINDS WILL BE
LIGHT TO GENTLE AND BROADLY NORTHEASTERLY. EXPECT LOWS IN THE
UPPER 70S WITH DEW POINTS IN THE MID 70S.
MARINE
ISSUED AT 924 PM EDT THU SEP 18 2025
DISORGANIZED HIGH PRESSURE OVER THE SOUTHEAST AND GULF, IN CONCERT
WITH BROAD TROUGHING OVER THE BAHAMAS, WILL RESULT IN BROADLY
GENTLE NORTHEASTERLY BREEZES ON KEYS WATERS OVERNIGHT. NO CHANGES
PLANNED FOR THE EVENING MARINE UPDATE.
AVIATION
(00Z TAFS)
ISSUED AT 924 PM EDT THU SEP 18 2025
VFR CONDITIONS ARE EXPECTED TO PREVAIL AT THE ISLAND TERMINALS
OVERNIGHT. SURFACE WINDS AWAY FROM CONVECTION WILL BE LIGHT TO
GENTLE OUT OF THE NORTHEAST.
KEY WATCHES/WARNINGS/ADVISORIES
FL...NONE.
GM...NONE.
PUBLIC/MARINE/FIRE...11
AVIATION/NOWCASTS....11
DATA ACQUISITION.....AJP
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