Area Forecast Discussion
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000
FXUS62 KKEY 300817
AFDKEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
420 AM EDT MON MAR 30 2015

.DISCUSSION...
.CURRENTLY...
KBYX DETECTS NO PRECIPITATION ECHOES. SKIES OVER THE ISLAND CHAIN
ARE MOSTLY CLEAR. WINDS OVER LAND ARE NORTHEAST AT 10 TO 15 MPH.
C-MAN WINDS...ON AVERAGE...ARE NORTHEAST AT 15 TO 20 KNOTS.
TEMPERATURES ARE IN THE UPPER 60S.

.SHORT TERM (TODAY THROUGH WEDNESDAY)...
AN AREA OF HIGH PRESSURE OVER THE FLORIDA PENINSULA WILL WEAKEN
TODAY THROUGH TUESDAY NIGHT. A TROUGH OF LOW PRESSURE WILL MOVE OVER
NORTH FLORIDA WEDNESDAY. PRECIPITABLE WATER VALUES WILL REMAIN BELOW
ONE INCH TODAY THROUGH WEDNESDAY. THE ANTICIPATED PRESENCE OF THIS
DRY AIR MASS WILL BE RESPONSIBLE FOR NO CHANCE OF RAIN TODAY THROUGH
WEDNESDAY.

.LONG TERM (WEDNESDAY NIGHT THROUGH SUNDAY)...
THE AFOREMENTIONED TROUGH OF LOW PRESSURE WILL WEAKEN AND DISSIPATE
OVER THE NORTHERN PORTION OF THE FLORIDA PENINSULA WEDNESDAY NIGHT.
AN ATLANTIC RIDGE OF HIGH PRESSURE WILL EXTEND ACROSS NORTH CENTRAL
FLORIDA THURSDAY THROUGH FRIDAY NIGHT. THIS RIDGE OF HIGH PRESSURE
WILL RETREAT EASTWARD SATURDAY AS A COLD FRONT MOVES SOUTHWARD
THROUGH THE PANHANDLE OF FLORIDA. THIS COLD FRONT IS EXPECTED TO
STALL OVER NORTH CENTRAL FLORIDA SATURDAY NIGHT OR SUNDAY.
PRECIPITABLE WATER VALUES SHOULD BE NEAR ONE INCH WEDNESDAY NIGHT
THROUGH SUNDAY...WHICH IS BELOW NORMAL FOR THE BEGINNING OF APRIL.
THE PRESENCE OF THIS RELATIVELY DRY AIR MASS WILL RESULT IN A NEAR
ZERO CHANCE OF RAIN FOR THE FLORIDA KEYS WEDNESDAY NIGHT THROUGH
SUNDAY.

&&

.MARINE...
SMALL CRAFT ARE URGED TO EXERCISE CAUTION ON ALL KEYS COASTAL WATERS
THIS MORNING DUE TO SUSTAINED NORTHEAST SURFACE WINDS OF 15 TO 20
KNOTS. NO ADVISORIES OR CAUTIONARY HEADLINES EXPECTED THIS AFTERNOON
THROUGH AT LEAST THURSDAY MORNING. SUSTAINED EAST SURFACE WINDS OF
15 TO 20 KNOTS ARE POSSIBLE ON THE COASTAL WATERS OF THE FLORIDA
STRAITS THURSDAY AFTERNOON. SMALL CRAFT ARE URGED TO EXERCISE
CAUTION ON THE COASTAL WATERS OF THE FLORIDA STRAITS THURSDAY NIGHT
THROUGH FRIDAY NIGHT DUE TO SUSTAINED EAST SURFACE WINDS OF 15 TO 20
KNOTS.

&&

.AVIATION...
VFR CONDITIONS WILL PREVAIL THROUGH AT LEAST 31/06Z AT BOTH THE KEY
WEST AND MARATHON ISLAND TERMINALS. WINDS WILL REMAIN OUT OF THE
NORTHEAST OVERNIGHT...DECREASING AFTER 30/18Z.

&&

.CLIMATE...
ON THIS DATE IN FLORIDA KEYS WEATHER HISTORY...IN 1905...4.52 INCHES
OF RAIN FELL IN KEY WEST. THIS SET THE DAILY RECORD FOR MAXIMUM
RAINFALL MEASURED IN KEY WEST ON MARCH 30TH...A RECORD WHICH STILL
STANDS 110 YEARS LATER. RAINFALL RECORDS AT KEY WEST DATE BACK TO
1871.

&&

.PRELIMINARY POINT TEMPS/POPS...
KEY WEST  77 67 79 69 / 00 00 00 00
MARATHON  79 67 81 68 / 00 00 00 00

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GM...NONE.

&&

$$

PUBLIC/MARINE/FIRE/CLIMATE/DIGITAL...BS
AVIATION.............................BWC

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