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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
359 PM CDT Sat Aug 8 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-092100-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
359 PM CDT Sat Aug 8 2020 /459 PM EDT Sat Aug 8 2020/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.

DISCUSSION...

An isolated thunderstorm or two are possible this evening for
areas near the Wisconsin-Illinois border.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday and Monday...
  Limited Severe Thunderstorm Risk.
  Limited Excessive Heat Risk.
Tuesday through Friday...
  Limited Thunderstorm Risk.

DISCUSSION:

Strong to severe thunderstorms are possible Sunday evening and
again Monday afternoon and evening. Strong winds, large hail, and
heavy rain are the primary hazards with any storms that develop.

An increasingly humid air mass combined with temperatures in the
upper 80s to low 90s will produce afternoon heat index values in
the upper 90s to locally 100 degrees both Sunday and Monday
afternoons.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward southeast at 20 mph.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
359 PM CDT Sat Aug 8 2020

LMZ740>745-092100-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
359 PM CDT Sat Aug 8 2020

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday and Monday...
  Limited Severe Thunderstorm Risk.
Tuesday through Friday...
  Limited Thunderstorm Risk.

$$

Petr

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Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
338 PM CDT Sat Aug 8 2020

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-092045-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
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 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
338 PM CDT Sat Aug 8 2020

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Tonight

Gusty south winds and high waves will gradually diminish
overnight.

There is a chance for thunderstorms across central Lake Michigan
through this evening.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

Better chances for thunderstorms are forecast Sunday afternoon
and night, with chances lingering into Monday night. A few strong
to severe storms are possible Sunday afternoon and night, with
hail to one inch, gusty winds to 50 knots, and cloud to surface
lightning.

There are chances for thunderstorms at times Wednesday through Friday.

$$
MRC

www.weather.gov/mkx

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
1158 AM EDT Sat Aug 8 2020

MIZ037>040-043>046-050>052-056>059-064>067-071>074-090800-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
1158 AM EDT Sat Aug 8 2020

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...This Afternoon and Tonight

There is a small chance of a thunderstorm this afternoon into
tonight, mainly north of I-96. Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms will remain possible off and on from Sunday
through Monday night. The best chance of thunderstorms will be
west of U.S.-131 toward daybreak Monday morning. There is a small
chance of a strong storm with winds up to 50 mph and some small
hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not likely.

$$

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
1158 AM EDT Sat Aug 8 2020

LMZ844>849-090800-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
1158 AM EDT Sat Aug 8 2020

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...This Afternoon and Tonight

Conditions will become hazardous for Smaller Craft and swimmers
this afternoon and this evening north of Whitehall as waves build
to 2 to 5 feet.

There is a chance of a thunderstorm into Tonight, mainly north of
Muskegon. Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Thunderstorms will remain possible off and on from Sunday
through Monday night. The best chance of thunderstorms will be
toward daybreak Monday morning. There is a small chance of a
strong storm with winds up to 50 mph and some small hail.

Conditions could become hazardous for Smaller Craft and swimmers once
again late Sunday and Sunday night.

$$

Hazardous Weather Outlook
National Weather Service Wilmington OH
425 AM EDT Sat Aug 8 2020

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-090900-
Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-
Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-
Shelby-Logan-Union OH-Delaware-Miami-Champaign-Clark-Madison-
Franklin OH-Licking-Preble-Montgomery-Greene-Fayette OH-Pickaway-
Fairfield-Butler-Warren-Clinton-Ross-Hocking-Hamilton-Clermont-Brown-
Highland-Adams-Pike-Scioto-
425 AM EDT Sat Aug 8 2020

This Hazardous Weather Outlook is for East Central Indiana,
Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central
Ohio, South Central Ohio, Southwest Ohio and West Central Ohio.

.DAY ONE...Today and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Heat index values will be in the middle to upper 90s on Monday.
Isolated severe weather will be possible Monday afternoon into Monday
night. Damaging wind will be the primary threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
404 AM EDT Sat Aug 8 2020

MIZ047>049-053>055-060>063-068>070-075-076-082-083-090900-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
404 AM EDT Sat Aug 8 2020

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

There is a chance of thunderstorms late tonight mainly across the
Saginaw Valley and Thumb. These storms are not expected to be
severe while tracking eastward around 20 mph.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Chances of thunderstorms continue Sunday through Tuesday. The best
chance of storms is Monday into Monday night as a cold front moves
through the region. Storms are not projected to become severe late
this weekend, but will carry some potential on Monday should greater
instability materialize during the afternoon and evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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