Area Forecast Discussion
Issued by NWS Louisville, KY
FXUS63 KLMK 101850
Area Forecast Discussion
National Weather Service Louisville KY
250 PM EDT SAT OCT 10 2015
.SHORT TERM (Now through Sunday Night)...
Issued at 240 PM EDT Sat Oct 10 2015
Upper level ridging will remain in place aloft through the short
term period. At the surface an elongated area of high pressure will
slowly slide across the region through Sunday night. This will bring
us continued dry and pleasant fall weather.
The only concern for tonight will be the potential for fog
formation. With high pressure over the region bringing mostly clear
skies and light winds, conditions will be good for radiational
cooling. Temperatures are expected to fall into the lower to mid
40s. Many places across south central KY will likely fall below their
crossover temperatures. This region also has slightly higher
dewpoints and received more rain yesterday. Thus, some areas of fog
will be possible across south and potentially east central KY
tonight. Elsewhere, fog should be more patchy if it develops.
Highs tomorrow will be warmer than today, topping out in the lower
to mid 70s. Lows tomorrow night will dip into the upper 40s to lower
.LONG TERM (Monday through Saturday)...
Issued at 205 PM EDT Sat Oct 10 2015
Still looks like the best chance for rain this period will be with a
cold frontal passage Monday/Monday night. A couple of other waves
pass through later in the period, but precipitable water will be
much higher with the first front, though as previous forecaster
mentioned even that will be less than with the system yesterday.
Models forecast the peak of moisture coming across just ahead of
that front, with timing ranging from 12Z Monday to 06Z Tuesday.
Even with the time of day being roughly favorable for development,
dry surface air ahead of the front looks to be limiting model QPF
fields, thus will maintain continuity with previous shift and call
only for isolated to widely scattered showers.
Monday still looks to be the warmest day of the period, with a good
southwesterly flow ahead of the front. Highs should be in the mid to
upper 70s, with an 80 not our of the question in a couple of spots.
The rest of the days will vary between a little below normal and
normal as we go between those dry fronts later in the week.
.AVIATION (18Z TAF Update)...
Issued at 1242 PM EDT Sat Oct 10 2015
Scattered to broken clouds around 3500 feet will stay around through
the afternoon hours. These should clear out this evening with mostly
clear skies expected overnight. With high pressure moving in winds
will become light and variable to calm overnight. Some light fog is
expected to develop at BWG and LEX late tonight. Guidance is split
on how dense this will become, so will keep visibilities in the MVFR
range for now. For tomorrow skies will be mostly clear with light
winds out of the southwest.