Area Forecast Discussion
Issued by NWS Chicago, IL

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000
FXUS63 KLOT 280746
AFDLOT

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
246 AM CDT Fri Jul 28 2017

.SHORT TERM...
216 AM CDT

Through tonight...

Weak secondary cold front will continue to move slowly south
across the area this morning, with some models hinting at some
isolated showers or sprinkles south of the Kankakee River this
morning. Prospects for any precip falling, let alone measurable,
are meager at best and kept forecast dry with just 10-15% of any
given area picking up any measurable precip. Otherwise, modestly
brisk northerly winds are expected today with dewpoints a good
10F+ lower than yesterday with temps in the same ballpark or a
bit cooler. Anticipate enough of a gradient tonight to keep any
fog confined to the typical wind sheltered, low lying areas and
not anticipating fog to get out of hand.

- Izzi

&&

.LONG TERM...
216 AM CDT

Saturday through Thursday...

After a very active wx pattern in July, it looks like August will
come in more like a lamb with a far more tranquil weather pattern
expected. Generally expect fairly seasonable temps through the
period with the only real threat of precipitation coming with a
progressive trough and associated cold front moving across the
region in the late Wednesday/early Thursday time frame.

- Izzi

&&

.AVIATION...
For the 06Z TAFs...

High pressure will remain anchored over the western Great Lakes
with little movement over the next 24-30 hours resulting in
fairly steady state conditions across northern Illinois and
northwest Indiana. During the day tomorrow, expect a modest
diurnal uptick in wind speeds with some gusts into the mid to high
teens expected for the Chicago area terminals. Few to scattered
afternoon cumulus is also expected. VFR conditions will prevail
throughout the TAF period.

BMD

&&

.MARINE...
245 AM CDT

Broad area of high pressure is centered just north of Lake
Superior early this morning resulting in a moderate north to
northeast gradient across Lake Michigan. Northeast winds of 20 to
25 kt will back to north to 30 kt this afternoon. A small craft
advisory will remain in effect for the Indiana and Illinois
nearshore zones through Saturday morning. High pressure will
settle over Lake Michigan this weekend allowing winds and waves
to diminish over the north end of the lake Saturday then over the
south end Sunday. Low pressure moving across Canada early through
the middle of next week will drive a cold front south across the
Great Lakes around midweek.

BMD

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Beach Hazards Statement...ILZ006-ILZ014 until 7 PM Saturday.

IN...Beach Hazards Statement...INZ001-INZ002 until 7 PM Saturday.

LM...Small Craft Advisory...nearshore waters
     until 10 AM Saturday.

&&

$$

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