Area Forecast Discussion
Issued by NWS Louisville, KY

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FXUS63 KLMK 241632

Area Forecast Discussion
National Weather Service Louisville KY
1232 PM EDT Sun Sep 24 2017

...Updated Aviation Discussion...

.Short Term (Now through Monday)...
Issued at 230 AM EDT Sun Sep 24 2017

River valley fog has been slow to develop early this morning with
drier air filtering in from the east. Valley fog will become a bit
more common toward sunrise, but coverage should remain limited.

Hot and dry weather will continue early this week. Surface high
pressure centered over NY/PA today will result in a light, easterly
wind. Highs this afternoon will rise into the upper 80s to around
90. Weak upper level low pressure will shift slightly northwest over
Mississippi today. Southeast flow aloft will advect higher PWAT air
from TN into western and south-central KY. Based on some weak low-
level convergence and less capping, the favored area for isolated
thunderstorm development is over west-central TN. There remains a
slight chance a storm will clip the far southwest CWA.

Quiet weather will continue tonight, with mostly clear to partly
cloudy skies and lows in the low to mid 60s. Temperatures on Monday
will be very similar to today.

.Long Term (Monday Night through Saturday)...
Issued at 245 AM EDT Sun Sep 24 2017

Very little change to the previous long term forecast. Hot and dry
weather will continue into Wednesday before a cold front ushers in a
more Fall-like airmass. The cold frontal passage on Wednesday still
looks mainly dry due to limited moisture, with only an increase in
cloud cover. Highs on Thursday are expected to be in the mid 70s,
with cooler temps Friday and Saturday. In fact, we`ll see a
reinforcing shot of cool air next weekend as Canadian high pressure
sinks southeast toward the region.


.Aviation (18Z TAF Update)...
Issued at 1232 PM EDT Sun Sep 24 2017

High pressure sitting over Lake Erie and upper ridging above the
Great Lakes and northeast will give us mostly clear and quiet
weather. Local fog will be possible again early Monday morning at
the usual spots.




Short Term........EBW
Long Term.........EBW
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