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Area forecast discussion 
National Weather Service Lincoln Illinois
609 PM CDT Wednesday Jul 29 2015

Short term...(tonight)
issued at 240 PM CDT Wednesday Jul 29 2015

A cold front, currently just over the southeastern area of ilx, will
continue to move into the Ohio River valley later this evening.
Winds behind the boundary are more northwesterly and drier and
cooler air is filtering into the region. Precipitation chances diminish
towards sunset. Dewpoints are slightly lower than guidance, have
adjusted accordingly. Slightly drier air should mitigate fog
development, although the southeast should be watched as the boundary layer
relative humidity is mostly untouched and any clearing could drop the temperatures close
to saturation in the se, along and south of Interstate 70.

Long term...(thursday through wednesday)
issued at 240 PM CDT Wednesday Jul 29 2015

High pressure ridge will continue to build into the area Thursday
and remain over the area through Friday. The ridge will slide south
of the area for the first part of the weekend. In the upper
levels...a northwest flow will begin to setup. A weak front will
drop into the area for Friday and Friday night. However...with ridging to
the south do not see any return flow of moisture. So thinking precipitation
chances should be slim to none and therefore will not have any probability of precipitation
in forecast for that time period. Once this weak front moves
through/washes out...ridging returns with continued dry weather.

Since the front moving in for Friday and Friday night will lack precipitation...the
only thing it will do is finally bring in slightly cooler air. Temperatures
for tomorrow and Friday will still be warm...in the upper 80s...but
dewpoints will be much lower...below 70 degree...which will lead to less
humid conditions. Cooler air...with temperatures in the lower to middle 80s
will arrive after the weak front moves through.

The rest of the weekend and the first half of next week with
dominated by a continued northwest flow aloft and the high pressure
ridge pushing more east and southeast. The northwest flow will allow
a couple of weak fronts to drop into the area through the extended
period. The first one will bring a chance of precipitation for Sat night and
sun in the northwest...then sliding south some to include the
central part of the County Warning Area. This front will linger over the area and
another chance of precipitation for Monday...but again just in the north and
central parts of the County Warning Area. The second shot of precipitation looks to be
stronger than the first one. This shot comes on Wednesday as a warm
front looks to develop and move across the area. Most probability of precipitation in the
extended will be on the lower chance side. However...probability of precipitation on Wednesday
look to be a little higher...given the slightly stronger frontal
system.

Temperatures will remain in the 80s for the afternoon highs but then begin
to rise...including the upper 80s for Monday and possibly Tuesday.

&&

Aviation...(for the 00z tafs through 00z Thursday evening)
issued at 608 PM CDT Wednesday Jul 29 2015

Much drier air moving into the area from the northwest will bring
VFR conditions to all central Illinois terminals through the next 24
hours. Winds northwest 5-10 kts early in the evening becoming west-northwest 3-7 kts
overnight. West-northwest winds increasing to 10-12 kts with gusts 15-20 kts
after 17z.

&&

Ilx watches/warnings/advisories...
none.

&&

$$

Short term...hjs
long term...auten
aviation...Onton

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