Area Forecast Discussion
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FXUS62 KKEY 240233

Area Forecast Discussion
National Weather Service Key West FL
1033 PM EDT Wed Aug 23 2017

Currently - A low level trough remains across Florida and the Keys
this evening. As a result, surface flow is very weak with a
tropical like sounding and PWAT well above 2 inches. After
numerous showers and thunderstorms through the afternoon, activity
has trended downwards through the evening and only isolated to
scattered activity is present across the area.

Short Term Update - The trough will linger across the area,
keeping a moist and unstable tropical airmass. Rain chances will
remain elevated. Expect shower and thunderstorm to pick up again
after this respite ends. Expect near normal overnight lows dew
points in the upper 70s. No reason to adjust any forecast
parameters at this time.


A low level trough across Florida and the Keys will keep winds
light. Expect a generally southeast flow to turn more south to
southwest through the overnight period. A wetter than usual
pattern is in place, and at times, numerous showers and
thunderstorms can be expected.


Will see a break in showers/thunderstorms this evening. The
atmosphere remains moist through the period. Expect additional
development overnight tonight and Thursday. Have VCSH in the TAFs
beginning 06Z and VCTS beginning 18Z Thursday. Periods of
visibilities of 1-3SM, MVFR ceilings, lightning, and wind gusts to
25 knots can be expected with the heavier activity. The periods of
heavier activity should last an hour or less at a time. Outside of
shower activity expect light south winds around 5 knots.  34/MM




Data Collection......KN

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