Area Forecast Discussion
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000
FXUS62 KKEY 200208
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
908 PM EST Sun Nov 19 2017

.DISCUSSION...
.CURRENTLY...
KBYX detects isolated showers over the coastal waters of the
offshore Gulf of Mexico. Elsewhere, KBYX detects no precipitation
echoes in the remainder of the forecast area. Skies over the
island chain are mostly clear. Winds over land are northwest to
north near 10 mph. C-MAN winds, on average, are northwest to north
at 10 to 15 knots. Temperatures are in the mid 70s.

.SHORT TERM (Overnight)...
A weak cold front will approach the Florida Keys overnight. The
00z KKEY sounding is stable and dry, with a precipitable water
(PWAT) value just above three quarters of an inch. Atmospheric
moisture will increase overnight. By sunrise Monday, PWAT values
should be just above one and one quarter of an inch, which is near
normal for this time of year. The stable air mass in place will
limit POPs to slight chance category tonight.

&&

.MARINE...
Small craft are urged to exercise caution on the coastal waters of
the offshore Gulf of Mexico overnight as winds turn to northeast
and increase to 15 to 20 knots. A Small Craft Advisory may be
required for all Keys coastal waters Monday and Monday night. No
advisories expected Tuesday through at least Wednesday night. A
Small Craft Advisory may be required for the coastal waters of
the Atlantic and offshore Gulf of Mexico Thursday through Friday.
No advisories expected Friday night.

&&

.AVIATION...
VFR conditions will prevail at EYW and MTH much of tonight. MVFR
ceilings are likely at EYW and MTH late tonight and Monday
morning. VFR conditions will prevail at EYW and MTH Monday
afternoon. Sustained northwest to north winds of 10 to 15 knots
from just off the surface to about 3,000 feet will veer to
northeast and increase to 15 to 20 knots late tonight.

&&

.CLIMATE...
On this date in Florida Keys weather history, in 1985, Hurricane
Kate moved to the west-northwest, just west of the Dry Tortugas. A
peak wind gust of 69 mph was measured at Key West International
Airport. Strong winds downed power lines and tree branches in the
Lower Keys. Hurricane Kate is the latest hurricane in an Atlantic
Basin season to make landfall along the United States coastline.

&&

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

&&

$$

Public/Marine/Fire...BS
Aviation/Nowcasts....BS
Data Collection......L. Kasper

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