Area Forecast Discussion
Issued by NWS Louisville, KY

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FXUS63 KLMK 240527

Area Forecast Discussion
National Weather Service Louisville KY
127 AM EDT Wed Jul 24 2019

...Updated Aviation Discussion...

.Forecast Update...
Issued at 945 PM EDT Tue Jul 23 2019

Small patches of light rain are falling out of 6k` bases over far
western portions of Indiana, and are diving to the SSE. Terre Haute
reported eleven minutes of sprinkles as the showers passed by
shortly before 9pm EDT. Though it appears the bulk of this activity
will pass to the west of the LMK CWA, and will dissipate as it
pushes south, have gone ahead and added scattered sprinkles to
Dubois County this evening through 11pm.

Satellite loops show the patch of clouds extending east to I-65.
Ceilings are higher with these clouds than farther to the west,
allowing any raindrops more opportunity to evaporate before reaching
the ground. But, a few stray sprinkles can`t be ruled out north of
the river and west of 65 east of Dubois County before midnight.


.Short Term...(This evening through Wednesday)
Updated at 300 PM EDT Tue Jul 23 2019

Aside from mostly clear conditions in the Bluegrass region, current
satellite imagery shows diurnal cu field over much of our CWA.
Otherwise, conditions have been quite pleasant and breezy today as a
sfc high pressure continues to build in from the west. Winds are
expected to weaken near sunset, and clouds should gradually clear
overnight. With the aid of radiational cooling, overnight lows will
fall into the upper 50s.

Wednesday will be much of the same in the way of clear and pleasant
conditions, as the aforementioned high pressure orients itself over
the Ohio Valley. Overall expecting to see highs in the low 80s with
dewpoints in the upper 50s. Winds will continue to be northerly,
however, gusts will not be as strong as they were today.

.Long Term...(Wednesday night through Tuesday)
Updated at 230 PM EDT Tue Jul 23 2019

A benign weather pattern will continue for much of the extended
forecast period across central KY and southern IN. A stout
persistent mid-level ridge will remain across the Rockies into the
central Plains with the main westerlies and storm track across the
northern tier of the U.S. and southern Canada. Flow aloft across the
Ohio Valley will be rather broad and weak with surface high pressure
remaining in control thru the upcoming weekend. Expect afternoon
high temps in the lower and mid 80s Thu, and mid 80s to around 90
Fri thru Sun. Lows Thu morning in the mid 50s to around 60 will
slowly inch up thru the 60s thereafter. Humidity levels also will
slowly rise during the late week period and this weekend, but still
remain below values from the last few days.

Our next chance of rain should be early next week when models
suggest that a weather disturbance coming over the western ridge
axis will send a weak frontal boundary into the Ohio Valley. This
would result in a more humid air mass and a potential band of
showers and storms roughly Mon night and/or Tue.


.Aviation...(06Z TAF Issuance)
Updated at 120 AM EDT Wed Jul 24 2019

VFR conditions are expected this TAF period as sfc high pressure
continues to build in from the west.  Some mid level clouds are
possible early this morning with afternoon cu expected later in the
TAFs.  Wind will be northerly at or below 7 kts throughout the TAF




Short Term...SSC
Long Term...TWF
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