Area Forecast Discussion
Issued by NWS Central Illinois

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000
FXUS63 KILX 240138
AFDILX

Area Forecast Discussion
National Weather Service Lincoln IL
838 PM CDT Sun Apr 23 2017

.UPDATE...
Issued at 838 PM CDT Sun Apr 23 2017

Northeast winds decreasing this evening as high pressure settles
over the area. With a dry air mass characterized by dewpoints in
the upper 20s/lower 30s and clear skies, temperatures will fall
rapidly overnight. After highs in the low 70s this afternoon,
this should be sufficient for lows reaching near 40 degrees
tonight, perhaps a few upper 30s. Forecast is in good shape with
these and other features and no significant updates needed this
evening.

&&

.SHORT TERM...(This evening through Monday)
ISSUED AT 314 PM CDT Sun Apr 23 2017

High pressure ridge axis stretching from the Southern Plains and
into the Great Lakes this afternoon.  Mostly north/northeasterly
flow today...but ample sunshine brought the temps up to low 70s in
most of Central Illinois.  Issues for the overnight are similar to
last night with dropping temps and a lack of sky cover.  Once again,
ridge axis in the region will keep the winds light and a significant
lack of cloud cover will set up a decent radiational cooling event.
Have dropped the temps tonight several degrees below the
guidance...as the southerly winds are delayed from prev solutions.
Tomorrow will be another pleasant spring day...sunshine and
increasingly southerly winds will keep the temps a few degrees
warmer than today...edging towards the mid 70s.

.LONG TERM...(Monday night through Sunday)
ISSUED AT 314 PM CDT Sun Apr 23 2017

Southerly winds pick up a bit for Tuesday, increasing the warm air
advection within the boundary layer ahead of the next system moving
in from the west/northwest.  A large wave dives into the center of
the country, digging out a significant trough aloft and developing a
surface low to move across the Great Lakes on Wednesday.  The low
will pull a cold front across the Midwest, bringing the best chances
for showers and thunderstorms for Tuesday night and through
Wednesday evening. The initial trough leading this system becomes
the first in a series of waves to bring several rounds of precip and
storms through the Midwest through the end of the week. Another
system will push a warm front and associated showers and
thunderstorms up into the region for Friday night and into Saturday.
 With Saturday, central IL will remain in the warm sector with
temperatures moving well above seasonal norms...in advance of the
storm system still developing under a deep upper trough over the
Four Corners region.

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 605 PM CDT Sun Apr 23 2017

VFR conditions and mostly clear skies expected the next 24 hours
as a ridge axis passes over the area. NE winds up to 12 kts with a
few higher gusts early in the evening decreasing to under 6 kts
overnight. Winds shifting to SE Monday and increasing up to 10
kts by midday.


&&

.ILX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

UPDATE...37
SHORT TERM...HJS
LONG TERM...HJS
AVIATION...37


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