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Area Forecast Discussion
Issued by NWS
Issued by NWS
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000 FXUS62 KKEY 060303 AFDKEY AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KEY WEST FL 1003 PM EST THU MAR 5 2015 .DISCUSSION... ANALYSIS SHOWS WEAKENING HIGH PRESSURE ACROSS SOUTHERN FLORIDA AND THE KEYS LATE THIS EVENING. WINDS ARE DIMINISHING...WITH CMAN SENSORS CLOSE TO THE ISLAND CHAIN UNIFORMLY AT OR AROUND 10 KNOTS...MAINLY FROM THE EAST. ISLAND SENSORS ARE REGISTERING 10 MPH OR LESS AT THIS HOUR...WITH TEMPERATURES IN THE MIDDLE 70S. LATE EVENING IR SATELLITE IMAGES SHOW JUST A FEW PATCHES OF SHALLOW STRATOCU ON THE EXTREME SOUTHERN FRINGES OF OUR ATLANTIC MARINE ZONES. THE HIGH PRESSURE ACROSS SOUTH FLORIDA AND THE KEYS WILL CONTINUE TO WEAKEN OVERNIGHT WHILE SLIDING FURTHER INTO THE WESTERN NORTH ATLANTIC...NUDGED BY A FRONT CURRENTLY SAGGING INTO THE CENTRAL GULF OF MEXICO FROM THE BIG BEND AREA OF FLORIDA. WE EXPECT THE KBYX RADAR TO REMAIN QUIET OVERNIGHT THANKS TO A LIGHT WIND PROFILE EXTENDING TO WELL ABOVE 10000 FEET AND A STABLE AIRMASS IN PLACE. THE AFTERNOON ZONE ISSUANCE HAS THE EXPECTED SENSIBLE WEATHER ELEMENTS ADVERTISED WELL. NO UPDATE IS PLANNED THIS EVENING. && .MARINE... THE ONLY ADJUSTMENT ANTICIPATED ON THE UPCOMING COASTAL WATERS UPDATE WILL BE TO ADJUST THE INITIAL WIND DIRECTION IN A FEW OF OUR MARINE GROUPINGS BACK TO THE NORTHEAST/EAST...AND TRIM THE SPEED BACK BY A COUPLE OF KNOTS. BUT THIS ACCOUNTS FOR A VERY MINOR CHANGE FROM THE AFTERNOON COASTAL WATERS ISSUANCE. && .AVIATION...PREVAILING EASTERLIES AROUND 5 KNOTS ALONG THE ISLAND CHAIN AT BOTH TERMINALS TONIGHT. VFR CONDITIONS WILL REMAIN THROUGHOUT THE TAF PERIOD WITH SHALLOW PATCHY STRATOCU BASED NEAR 2000 FT FRIDAY MORNING. && .KEY WATCHES/WARNINGS/ADVISORIES... FL...NONE. GM...NONE. && $$ PUBLIC/MARINE.........04 AVIATION/NOWCASTS.....VICKERY DATA COLLECTION.......VICKERY VISIT US ON THE WEB AT WEATHER.GOV/KEY FOLLOW US ON FACEBOOK AND TWITTER AT... WWW.FACEBOOK.COM/NWSKEYWEST WWW.TWITTER.COM/NWSKEYWEST
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