High Wind Warning 3, NWS Chicago, IL

244 
WWUS73 KLOT 060212
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
912 PM CDT Wed Apr 5 2017

...High Winds Expected Tonight and Thursday...

.A deepening low pressure system moving through the region will
produce a period of very strong northerly winds across the area.
Sustained winds around 40 mph and gusts approaching 60 mph will
be likely late tonight through much of the day Thursday, mainly
in counties along Lake Michigan, before winds slowly diminish
Thursday afternoon and evening. Strongest winds will be near the
Lake Michigan shore.

ILZ014-061015-
/O.CON.KLOT.HW.W.0003.170406T0900Z-170406T2100Z/
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170406T0900Z/
Cook-
Including the city of Chicago
912 PM CDT Wed Apr 5 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT THURSDAY...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 AM TO 4 PM CDT
THURSDAY...

* TIMING...Tonight through Thursday afternoon.

* WINDS...Sustained north winds of 40 mph with gusts as high as 
  60 mph developing late tonight and Thursday...especially near 
  Lake Michigan. 

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

INZ001-002-061015-
/O.CON.KLOT.HW.W.0003.170406T0900Z-170407T0000Z/
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170406T0900Z/
Lake IN-Porter-
Including the cities of Gary and Valparaiso
912 PM CDT Wed Apr 5 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT THURSDAY...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
THURSDAY...

* TIMING...Tonight through Thursday evening.

* WINDS...Sustained north winds of 40 mph with gusts as high as 
  60 mph developing late tonight...especially near Lake 
  Michigan. 

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

ILZ006-061015-
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170406T2100Z/
Lake IL-
Including the city of Waukegan
912 PM CDT Wed Apr 5 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THURSDAY...

* TIMING...Tonight through Thursday afternoon.

* WINDS...Sustained north winds of 30 mph with gusts as high as 
  45 mph...especially near Lake Michigan. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

INZ010-011-019-061015-
/O.CON.KLOT.WI.Y.0004.170406T0900Z-170407T0000Z/
Newton-Jasper-Benton-
Including the cities of Morocco, Rensselaer, and Fowler
912 PM CDT Wed Apr 5 2017 /1012 PM EDT Wed Apr 5 2017/

...WIND ADVISORY REMAINS IN EFFECT FROM 4 AM CDT /5 AM EDT/ TO
7 PM CDT /8 PM EDT/ THURSDAY...

* TIMING...Late tonight through Thursday evening.

* WINDS...Sustained north winds of 30 mph with gusts as high as 
  45 mph. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

673 
WWUS73 KLOT 060904
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
404 AM CDT Thu Apr 6 2017

...High Winds Today...

ILZ014-061715-
/O.EXP.KLOT.WI.Y.0004.000000T0000Z-170406T0900Z/
/O.CON.KLOT.HW.W.0003.000000T0000Z-170406T2100Z/
Cook-
Including the city of Chicago
404 AM CDT Thu Apr 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

* LOCATION...Near the lake shore mainly from Chicago southward.

* TIMING...Through early to mid afternoon.

* WINDS...Sustained north winds of 30 to 40 mph with gusts of 50
  to 60 mph. 

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

INZ001-002-061715-
/O.EXP.KLOT.WI.Y.0004.000000T0000Z-170406T0900Z/
/O.CON.KLOT.HW.W.0003.000000T0000Z-170407T0000Z/
Lake IN-Porter-
Including the cities of Gary and Valparaiso
404 AM CDT Thu Apr 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* LOCATION...Near the lake shore.

* TIMING...Today.

* WINDS...Sustained north winds of 30 to 40 mph with gusts of 50
  to 60 mph.

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

INZ010-011-019-061715-
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170407T0000Z/
Newton-Jasper-Benton-
Including the cities of Morocco, Rensselaer, and Fowler
404 AM CDT Thu Apr 6 2017 /504 AM EDT Thu Apr 6 2017/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/ THIS
EVENING...

* TIMING...Today.

* WINDS...Sustained north winds of 30 mph with gusts as high as 
  45 mph. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

ILZ006-061715-
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170406T2100Z/
Lake IL-
Including the city of Waukegan
404 AM CDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

* TIMING...Through early to mid afternoon.

* WINDS...Sustained north winds of 30 mph with gusts as high as 
  45 mph...especially near Lake Michigan. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

MTF

389 
WWUS73 KLOT 061420
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
920 AM CDT Thu Apr 6 2017

...Strong Winds Today...

ILZ014-062230-
/O.CAN.KLOT.HW.W.0003.000000T0000Z-170406T2100Z/
/O.EXA.KLOT.WI.Y.0004.000000T0000Z-170407T0000Z/
Cook-
920 AM CDT Thu Apr 6 2017

...WIND ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...HIGH WIND WARNING IS CANCELLED...

The National Weather Service in Chicago has issued a Wind
Advisory, which is in effect until 7 PM CDT this evening. The
High Wind Warning has been cancelled. 

* TIMING...Today, highest this afternoon.

* WINDS...Sustained north to northwest winds of 20 to 30 mph with
  gusts 40 to 50 mph. Highest winds closest to the lakeshore 
  mainly from Chicago southward.

* IMPACTS...With the damp ground, minor damage to trees, power
  lines and personal property are possible with winds of this
  magnitude. Driving may be made difficult for high profile
  vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

INZ001-002-062230-
/O.CON.KLOT.HW.W.0003.000000T0000Z-170407T0000Z/
Lake IN-Porter-
920 AM CDT Thu Apr 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* LOCATION...Near the lake shore.

* TIMING...Today.

* WINDS...Sustained north winds of 30 to 40 mph with gusts of 50 
  to 60 mph. 

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

INZ010-011-019-062230-
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170407T0000Z/
Newton-Jasper-Benton-
920 AM CDT Thu Apr 6 2017 /1020 AM EDT Thu Apr 6 2017/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/ THIS
EVENING...

* TIMING...Today.

* WINDS...Sustained north winds of 30 mph with gusts as high as 
  45 mph. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

ILZ006-062100-
/O.CON.KLOT.WI.Y.0004.000000T0000Z-170406T2100Z/
Lake IL-
920 AM CDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

* TIMING...Through early to mid afternoon.

* WINDS...Sustained north winds of 30 mph with gusts as high as 45
  mph...mainly near Lake Michigan. 

* IMPACTS...Minor damage to trees...power lines and personal 
  property are possible with winds of this magnitude. Driving 
  may be made difficult for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult...especially for high
profile vehicles. Use extra caution.

&&

$$

KMD

138 
WWUS73 KLOT 061935
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
235 PM CDT Thu Apr 6 2017

...Strong Winds Today...

ILZ014-INZ010-011-019-062045-
/O.CAN.KLOT.WI.Y.0004.000000T0000Z-170407T0000Z/
Cook-Newton-Jasper-Benton-
235 PM CDT Thu Apr 6 2017 /335 PM EDT Thu Apr 6 2017/

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Chicago has cancelled the Wind
Advisory. 

Winds will generally gust to less than 45 mph through the
afternoon. 

$$

ILZ006-062045-
/O.CAN.KLOT.WI.Y.0004.000000T0000Z-170406T2100Z/
Lake IL-
235 PM CDT Thu Apr 6 2017

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Chicago has cancelled the Wind
Advisory. 

Wind gusts less than 45 mph are expected through the afternoon.

$$

INZ001-002-070000-
/O.CON.KLOT.HW.W.0003.000000T0000Z-170407T0000Z/
Lake IN-Porter-
235 PM CDT Thu Apr 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* LOCATION...Near the lake shore.

* TIMING...Through the afternoon.

* WINDS...Sustained north winds of 25 to 35 mph with gusts of 50 
  to 60 mph. 

* IMPACTS...Damage to trees...power lines and personal property 
  are possible with winds of this magnitude. Driving may be made 
  difficult for high profile vehicles. High waves along the Lake 
  Michigan shore may cause lakeshore flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

KMD

619 
WWUS73 KLOT 062233
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
533 PM CDT Thu Apr 6 2017

INZ001-002-062345-
/O.CAN.KLOT.HW.W.0003.000000T0000Z-170407T0000Z/
Lake IN-Porter-
Including the cities of Gary and Valparaiso
533 PM CDT Thu Apr 6 2017

...HIGH WIND WARNING IS CANCELLED...

The National Weather Service in Chicago has cancelled the High
Wind Warning. 

Winds have diminished and no longer pose a significant hazard and
will continue to gradually diminish this evening.

$$

Izzi

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
246 PM CDT Wed Apr 5 2017

.SHORT TERM...
240 PM CDT

Through Thursday...

The main concern out the gate is increasing rain showers and some
storms. We have had some snow mixing in with the rain across
north central Illinois this afternoon. Expect some of that to ease
as moderate precipitation subsides. Additional heavier showers
this afternoon may still allow snow to mix in for these areas
though no accums are expected. Expect a blossoming of showers
through the afternoon and evening as several lobes of energy
translate northeast ahead of the deep and impressive upper low to
our southwest. Thunder should generally be confined along and
south of I-80 as the instability this far north is much lower.
Brief heavy downpours are expected to be the most significant
hazard, with some small hail also possible. These showers will
continue this evening, mixing with snow in some areas tonight into
early Thursday. Localized flooding is possible due to the swollen
ground, but the higher concern will be along streams and rivers
which are already at high flow levels. Concern will then shift to
increasing NE to eventually NNW winds tonight into Thursday.

Here are some more specifics and impacts by weather type:

Winds:
Winds will be the highest concern from an areal coverage
perspective, and this will also translate into a significant
associated wave growth along the Illinois and Indiana shorelines.
A center of low pressure near St. Louis will move into central
Indiana by this evening and continue to deepen. North of the
deepening low, the pressure gradient will undergo significant
tightening, especially late tonight which is when the period of
strongest winds will commence. Gusts over 50 mph for some areas,
and even to 60 mph near the lake, and waves of 20 ft are very
reasonable on Thursday with this setup.

Expect winds to ramp up quickly this evening with the peak winds
expected in the 4 am to early-mid afternoon time frame, and
continuing into the early evening across northwest Indiana given
the increased mixed layer depth. The timing and location of the
wind advisories and high wind warnings attempt to match this
evolution. Wind advisories will go into effect this evening for
all our counties along the lake, and then overnight for
Newton/Jasper/Benton. High wind warnings than take effect for Cook
and Porter/Lake Indiana starting late tonight and continuing
through the early-mid afternoon in Cook and through the early
evening in Lake/Porter Indiana. Damage from possible fallen trees
is a concern given the swollen ground and an extended period of
strong sustained winds and locally damaging wind gusts.

Wintry precipitation:
Latest short term guidance suggests that we remain all rain
outside of NC IL through most of the evening and even into the
early morning hours for most areas. The area of concern for a
burst of heavy snow continues to be east of I-57 across far east
Central IL and more so across northwest Indiana. With the warmer
conditions currently in place the dynamic cooling associated with
heavier precipitation rates is what will be needed to bring the
snow (which will be falling at a good clip a few thousand feet
above the surface) all the way to the ground. RAP/HRR forecast
soundings still suggest that these processes will most likely
setup across NW Indiana, where a burst of heavy snow may still
occur. This would largely be on grassy surfaces given the warm
pavement temperatures. If it falls at a good enough clip there
could be slushy accums on roads too.  Most areas in northeast IL
will remain rain until late tonight or on Thursday morning when
precipitation rates will weakening, so it does not appear to be a
big deal outside of this heavier axis, but some snowflakes could
certainly mix in tonight into early Thursday.

Rain/flooding: As noted above, the ground is rather swollen, so
any heavier precipitation rates will lead to ponding of water and
a further aggravation of flooding concerns across elevated streams
and rivers. An additional 1" of rain remains possible in the
shower and isolated storm activity, with locally higher amounts.

Precipitation will be much lighter on Thursday with the prime
focus being the strong winds.

KMD/Lenning

&&

.LONG TERM...
240 PM CDT

Thursday night through Wednesday...

The surface low will pull away east of the area Thursday night,
and while winds will ease, they will still remain elevated into
Thursday as the surface low will strengthen further across the
eastern Great lakes. Showers will linger Thursday night across
northwest Indiana as we remain in cyclonic flow aloft, but
moisture will diminish.

Height rises Friday will lead to some warming and dry conditions.
The surface ridge will shift east Saturday. Upper level ridging
will build and southwest flow behind the high will usher in warmer
conditions for the weekend. Expect some passing high clouds
Saturday and Sunday ahead of another fast moving Pacific upper
low. This low that will move from the four corners region early
Sunday to the Great Lakes midweek. This will lead to shower and
some t-storm chance later Sunday night with the leading
shortwaves, and then ahead of this systems cold front sometime
Monday or possibly into Tuesday, but there is some disagreement
from the mid-range models on timing. Given that, the early to mid
week period does favor a chance of showers and possibly some
storms before the low pulls away.

KMD

&&

.AVIATION...
For the 18Z TAFs...

Concerns:
1) Rain-snow mix across north central IL
2) Return of showers and some t-storms this afternoon
3) Increasingly strong ne and shifting to nnw winds
4) Low Cigs
5) Potential mix late tonight

We have had some snow mixing in with the rain across north central
Illinois this afternoon. Expect some of that to ease as moderate
precipitation subsides. Additional heavier showers this afternoon
may still allow snow to mix in for these areas though no accums
are expected.

Expect a blossoming of showers through the afternoon and evening
as several lobes of energy translate northeast ahead of the deep
upper low to our southwest. Thunder should generally be confined
along and south of I-80. Brief heavy downpours are expected and
possible for all areas, with some small hail possible south.

The surface low will progress east and north through this evening.
Winds shift more NNE and eventually to NNW toward daybreak. The
strongest winds will likely be in the 3 am - Noon time frame
(area-wide speaking), but do expect a significant ramp up to
being this evening.

Ceilings will generally hold at low end MVFR, occasionally IFR.
Vsbys will likely be VFR/MVFR except in heavier showers.

Guidance is not all that excited about snow mixing in for most
areas tonight, but in the heavier activity across NW indiana later
tonight it is possible, and also possible across the Chicago
terminals late tonight, but no accums are expected outside of the
heavier precip.

KMD

&&

.MARINE...
240 PM CDT...

Overall trends appear to be evolving mostly as expected,
though winds have been a little slow to increase into the gale
category this afternoon. A period of storm force winds still appears
very likely starting late tonight and continuing into Thursday
evening, though headlines were adjusted just a bit to end the storm
warning a little earlier for the Illinois nearshore.  Very high wave
growth is expected to accompany these winds at the southern end of
the long fetch.

The two factors responsible for these strong winds are a deepening
low moving across Illinois into central Indiana, and an area of high
pressure approaching from the northern Plains.  The period where
both are strongest and in closest proximity, thus producing the
tightest pressure gradient across the lake, would be late tonight
into mid morning Thursday.

After Thursday, quieter conditions prevail for Friday and Saturday
as the high pressure moves over the lake itself.  There could be
another period of strong winds Sunday and Monday but not nearly what
we are expecting for tonight and tomorrow, and the mild southerly
air would not produce nearly the wave growth or deep mixing as the
colder and more dense northerly flow.

Lenning

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Wind Advisory...ILZ014...7 PM Wednesday to 4 AM Thursday.

     High Wind Warning...ILZ014...4 AM Thursday to 4 PM Thursday.

     Lakeshore Flood Warning...ILZ014...4 AM Thursday to 1 AM Friday.

     Wind Advisory...ILZ006...7 PM Wednesday to 4 PM Thursday.

IN...High Wind Warning...INZ001-INZ002...4 AM Thursday to 7 PM
     Thursday.

     Lakeshore Flood Warning...INZ001-INZ002...4 AM Thursday to 1 AM
     Friday.

     Wind Advisory...INZ001-INZ002...7 PM Wednesday to 4 AM Thursday.

     Wind Advisory...INZ010-INZ011-INZ019...4 AM Thursday to 7 PM
     Thursday.

LM...Gale Warning...LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745-LMZ777-
     LMZ779 until 4 AM Thursday.

     Storm Warning...LMZ740-LMZ741-LMZ742...4 AM Thursday to 4 PM
     Thursday.

     Gale Watch...LMZ743-LMZ744-LMZ745-LMZ777-LMZ779...7 PM Thursday
     to 3 PM Friday.

     Storm Warning...LMZ743-LMZ744-LMZ745-LMZ777-LMZ779...4 AM
     Thursday to 7 PM Thursday.

&&

VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
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Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1145 AM CDT Wed Apr 5 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
061645-
Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
1145 AM CDT Wed Apr 5 2017 /1245 PM EDT Wed Apr 5 2017/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...This Afternoon and Tonight.

WEATHER HAZARDS EXPECTED:
  Limited Thunderstorm Risk...with an associated:
      Limited Hail Risk...up to quarter size.
  Limited Flooding Risk.
  Elevated Non Thunderstorm Wind Risk.
  Limited Snow Risk.

DISCUSSION:

As a potent weather system moves over the area, wind gusts will
reach 40 to 50 mph tonight, with gusts to near 60 mph near the
lake shore late tonight. This will produce high waves near the
lake front, likely causing lakeshore flooding.

Rainfall on already wet ground may cause localized flooding, as
well as likely bring increases on area rivers which are already
running high.

A few thunderstorms may be seen mainly south of I-80. A few of
these could have some hail, mainly along and south of U.S.
Highway 24. More robust storms are expected to remain just south
of the area.

A mix with wet snow is likely tonight when some minor slushy
accumulation is possible. Very reduced visibility may be seen if
any small areas of moderate to heavy snow develop, most favored
along and east of Interstate 57 overnight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Significant Non Thunderstorm Wind Risk.
  Limited Snow Risk.
  Limited Frost Risk.
Friday...
  Elevated Frost Risk.
Sunday and Monday...
  Limited Thunderstorm Risk.

DISCUSSION:

Wind gusts will of 40 to 50 mph will continue into the day
Thursday, with gusts to near or even over 60 mph near the lake
shore. High waves will continue near the lake front bringing
likely areas of lakeshore flooding.

Wet snow is likely on Thursday morning for mainly along and
east of Interstate 57. Brief greatly reduced visibility impacting
the morning commute is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today or tonight.

GENERAL STORM MOTION OF THE DAY:

Moving to the northeast at 45 mph.

&&

LMZ740>745-061645-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-Calumet Harbor to Gary-
Gary to Burns Harbor-Burns Harbor to Michigan City-
1145 AM CDT Wed Apr 5 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE illinois NEARSHORE
WATERS OF LAKE MICHIGAN AND THE indiana NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...This Afternoon and Tonight.

Storm Force Winds or Extremely Hazardous Waves are likely by
late tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Storm Force Winds or Extremely Hazardous Waves are likely.
Friday...
  Gale Force Winds or Very Hazardous Waves are likely.
Saturday through Monday...
  Hazardous Conditions for Small Craft are likely.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-061645-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
1145 AM CDT Wed Apr 5 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...This Afternoon and Tonight.

Gale force winds are likely this afternoon with storm force winds
developing late tonight across the southern half of the lake.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Gale force winds will continue through Friday, with storm force
winds across the southern half of the lake on Thursday.

Thunderstorms are possible on Monday.

&&

KMD

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