Area Forecast Discussion
Issued by NWS Central Illinois

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FXUS63 KILX 042110
AFDILX

Area Forecast Discussion
NATIONAL WEATHER SERVICE LINCOLN IL
310 PM CST Wed Mar 4 2015

.SHORT TERM...(Tonight)
ISSUED AT 310 PM CST WED MAR 4 2015

Snow continues to fall across southern Illinois this afternoon.
Radar trends show lots of snow still back in southern MO that will
move into parts of southern and southeastern IL this evening. Unsure
of amounts down there and think snow will continue past 00z. So have
decided to extend the advisory til 9pm/03z. Otherwise, sky cover
will start mostly cloudy and then gradually clear from northwest to
southeast as the 500mb trough moves through the area, scattering
things out some. Believe most areas will be mostly clear by morning.
Another surge of Arctic air will arrive tonight as well with winds
out of the northwest at around 10-15mph. This cold Arctic air will
bring temps down to below zero around the Galesburg area, with
single digits over most of the area and then 10-14 along and
southeast of I-70. Snow should have ended in the southeast shortly
after midnight. Overnight lows, plus northwest winds will create
wind chills below minus 10F, but do not think they well get low
enough to warrant a wind chill advisory tonight. If wind chill did
reach low enough, it would be in extreme northwest and only for a
couple of hours.


&&

.LONG TERM...(Thursday through Wednesday)
ISSUED AT 310 PM CST WED MAR 4 2015

Arctic high pressure will approach central IL from the northwest
Thursday bringing a continued flow of cold and dry air from the
northwest. Breezy northwest winds 10 to 15 mph will accompany highs
only reaching the teens across central IL. Winds will taper off
quickly in the evening to early morning Friday as the high crosses
central IL bringing another cold night with lows in the single
digits. The high will push eastward early Friday morning while a
surface pressure trough approaches from the northwest initiating a
return to breezy southerly winds. Highs will begin a warming trend
reaching the upper 20s and low 30s. A series of weather disturbances
will move by to the north over the weekend while the deep trough
over the eastern U.S. shifts eastward and a warmer air mass builds
into the midwest from the southwest. Temperatures will continue
their upward climb through the weekend and into next week with highs
expected to reach the 50s by Tuesday and Wednesday.


&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
ISSUED AT 1132 AM CST WED MAR 4 2015

VFR conditions will prevail at all TAF sites next 24hrs. Mid
clouds will continue this afternoon and then scatter out late this
afternoon or early this evening. Then high cirrus will continue
tonight, then become clear toward tomorrow morning. Winds will be
northwest through the period. Wind speeds will be around 14-16kts
this afternoon and then slightly lower tonight.


&&

.ILX WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY until 9 PM CST this evening FOR
ILZ071>073.

&&

$$

SHORT TERM...Auten
LONG TERM...Onton
AVIATION...Auten






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