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Air Quality Alert


MIZ063-068>070-075-076-082-083-220400-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Port Huron, Howell, Pontiac, Warren,
Ann Arbor, Detroit, Adrian, and Monroe
102 PM EDT Thu Jul 20 2017

...Air Quality Alert in effect for Friday July 21th...

The Michigan Department of Environmental Quality has declared
Friday July 21th to be an action day for elevated levels of ozone.
Pollutants are expected to be in the unhealthy for sensitive groups
range.

The action day is in effect for the following Michigan counties...

St. Clair...Livingston...Oakland...Macomb...Washtenaw...Wayne...
Lenawee and Monroe.

People and businesses are urged to avoid activities which lead to
ozone formation. These activities include...refueling vehicles or
topping off when refueling, using gasoline powered lawn equipment
and using charcoal lighter fluid. Positive activities include...car
pooling, biking to work, delaying or combining errands and using
water based paints.

It is recommended that active children and adults, and people with
respiratory diseases such as asthma, limit prolonged outdoor
exertion.

For further information, please see the Michigan Department of
Environmental Quality page at http://www.deqmiair.org

$$

SF


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Indianapolis IN
449 PM EDT Fri Jul 21 2017

INZ021-028-029-222100-
Carroll-Warren-Tippecanoe-
Including the city of Lafayette
449 PM EDT Fri Jul 21 2017

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: There is an ENHANCED RISK for Severe storms tonight.

Hazards: Damaging winds, heavy rain and localized flooding, isolated
tornadoes, large hail, and lightning.

Timing: ANytime...but best chances for severe storms after 1100 PM

Discussion: Upper level disturbances will interact with hot and humid
air to produce some thunderstorms.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Outlook: Thunderstorm activity is possible at times through Monday.
Scattered severe storms will be possible Saturday. Damaging winds
and large hail, along with heavy rainfall producing flash flooding,
are the primary threats.

Hot and humid conditions will be the rule into the weekend. Maximum
heat index values from around 95 to near 105 can be expected through
Saturday.

Discussion: Hot air will remain across central Indiana into the
weekend. A front along with upper level disturbances will bring
thunderstorm chances to all or parts of the area at times through the
weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible through Saturday night.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

$$

Hazardous Weather Outlook
National Weather Service Indianapolis IN
449 PM EDT Fri Jul 21 2017

INZ030-031-035>049-222100-
Clinton-Howard-Fountain-Montgomery-Boone-Tipton-Hamilton-Madison-
Delaware-Randolph-Vermillion-Parke-Putnam-Hendricks-Marion-Hancock-
Henry-
Including the cities of Frankfort, Kokomo, Crawfordsville, Anderson,
Muncie, and Indianapolis
449 PM EDT Fri Jul 21 2017

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: There is a SLIGHT RISK for severe storms this evening and
tonight.

Hazards: Damaging winds, heavy rain and localized flooding, isolated
tornadoes, large hail, and lightning.

Timing: Anytime this evening, but the best chances for severe storms
will after 1100 PM. Heat will be at its worst during the afternoon
and early evening.

Discussion: Upper level disturbances will interact with hot and humid
air to produce some thunderstorms. Heat index values will top out in
the upper 90s to low 100s.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Outlook: Thunderstorm activity is possible at times through Monday.
Scattered severe storms will be possible Saturday. Damaging winds
and large hail, along with heavy rainfall producing flash flooding,
are the primary threats.

Hot and humid conditions will be the rule into the weekend. Maximum
heat index values from around 95 to near 105 can be expected through
Saturday.

Discussion: Hot air will remain across central Indiana into the
weekend. A front along with upper level disturbances will bring
thunderstorm chances to all or parts of the area at times through the
weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible through Saturday night.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

$$

Hazardous Weather Outlook
National Weather Service Wilmington OH
414 PM EDT Fri Jul 21 2017

INZ050-058-059-OHZ026-034-035-042>046-051>056-060>065-072>074-222015-
Wayne-Fayette IN-Union IN-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Union OH-Delaware-Miami-Champaign-Clark-Madison-Franklin OH-Licking-
Preble-Montgomery-Greene-Fayette OH-Pickaway-Fairfield-Clinton-Ross-
Hocking-
414 PM EDT Fri Jul 21 2017

This Hazardous Weather Outlook is for East Central Indiana, Central
Ohio, Southwest Ohio and West Central Ohio.

.DAY ONE...Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Heat index values in the middle to upper 90s will occur on Saturday
in an increasingly humid airmass.

Occasional thunderstorms can also be expected through the weekend.
Some storms may become severe with the main severe threats being
heavy rainfall and damaging winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Cleveland OH
407 PM EDT Fri Jul 21 2017

LEZ142>144-162>164-OHZ003-006>009-017>019-027>030-036-037-047-222015-
Lake Erie nearshore waters from Maumee Bay to Reno Beach OH-
Lake Erie nearshore waters from Reno Beach to The Islands OH-
Lake Erie nearshore waters from The Islands to Vermilion OH-
Lake Erie open waters from Maumee Bay to Reno Beach OH-
Lake Erie open waters from Reno Beach to The Islands OH-
Lake Erie open waters from The Islands to Vermilion OH-Lucas-Wood-
Ottawa-Sandusky-Erie-Hancock-Seneca-Huron-Wyandot-Crawford-Richland-
Ashland-Marion-Morrow-Knox-
407 PM EDT Fri Jul 21 2017

This Hazardous Weather Outlook is for Lake Erie, north central Ohio
and northwest Ohio.

.DAY ONE...Tonight.

Tonight there is a chance of thunderstorms...mainly after midnight
as a warm front approaches the area from the southwest. There is a
chance that a few storms may approach severe limits. Heavy rainfall
and training of storms are possible. Some storms may also be strong
with gusty winds and hail.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Thunderstorms are expected to develop both Saturday and Sunday.
There is a slight chance that some storms will become severe with
damaging winds and hail the main threat. An isolated tornado is also
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
353 PM EDT Fri Jul 21 2017

MIZ075-076-082-083-221030-
Washtenaw-Wayne-Lenawee-Monroe-
353 PM EDT Fri Jul 21 2017

This hazardous weather outlook is for locations along and south of
I-94.

.DAY ONE...This Afternoon and Tonight

Scattered thunderstorms are expected late tonight. There is a slight
chance these thunderstorms could become severe, mainly along the
southern Michigan border. Damaging wind gusts to 60 mph, large hail
to one inch, isolated tornado, and flooding rainfall are all
possible. Storm motion will be east at 30 mph.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a continued chance of thunderstorms on Saturday and Sunday
with the best chance Saturday morning. There is a slight chance of
severe weather on Saturday near the southern Michigan border.
An isolated marginal severe storm is also possible on Sunday as a
cold front tracks through.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated due to limited coverage.


$$

Hazardous Weather Outlook...UPDATED
National Weather Service Northern Indiana
323 PM EDT Fri Jul 21 2017

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-221930-
La Porte-St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-
Pulaski-Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-
Miami-Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Berrien-
Cass MI-St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance-
Henry-Paulding-Putnam-Van Wert-Allen OH-
323 PM EDT Fri Jul 21 2017 /223 PM CDT Fri Jul 21 2017/

This hazardous weather outlook is for portions of southwest
Michigan...northern Indiana and northwest Ohio.

.DAY ONE...This afternoon and Tonight

Thunderstorms are expected to move through the area late this evening
into early Saturday morning, with the potential to produce flash
flooding and severe weather. Damaging winds will be the primary
threat, with the best chance for severe thunderstorms west of
Interstate 69 in Indiana. An isolated tornado will also be possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are also possible into Saturday and Saturday night
with a slight risk for severe storms. Damaging winds along with
heavy rainfall would pose the main threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

$$

Hazardous Weather Outlook...UPDATED
National Weather Service Northern Indiana
323 PM EDT Fri Jul 21 2017

LMZ043-046-221930-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
323 PM EDT Fri Jul 21 2017

This hazardous weather outlook is for portions of The Nearshore
Waters of Southeastern Lake Michigan.

.DAY ONE...This afternoon and Tonight

Thunderstorms are expected late this evening into Saturday morning
with locally higher winds and waves. Wind gusts to 50 knots will be
possible with the strongest storms.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The chance for thunderstorms will exist into Saturday afternoon.
Locally gusty winds and higher waves will be possible.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1249 PM CDT Fri Jul 21 2017

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-221800-
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-
1249 PM CDT Fri Jul 21 2017

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

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are likely across the southern half of the lake
this evening and overnight. Winds in excess of 30 kt are probable
this evening for this same area.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Low chances of thunderstorms exist for the weekend.

&&

$$

KMD

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Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1249 PM CDT Fri Jul 21 2017

LMZ740>745-221800-
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-
1249 PM CDT Fri Jul 21 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.

  Significant Thunderstorm Risk.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday and Sunday...
  Limited Thunderstorm Risk.
Monday...
  Hazardous Conditions for Small Craft are likely.
Thursday...
  Limited Thunderstorm Risk.

&&

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1249 PM CDT Fri Jul 21 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
221800-
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-
1249 PM CDT Fri Jul 21 2017 /149 PM EDT Fri Jul 21 2017/

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

.DAY ONE...This Afternoon and Tonight.

WEATHER HAZARDS EXPECTED:
  Significant Thunderstorm Risk...with an associated:
      Significant Thunderstorm Wind Damage Risk...up to 70 mph.
      Elevated Hail Risk...up to quarter size.
      Limited Tornado Risk.
  Significant Flooding Risk.
  Significant Excessive Heat Risk this afternoon.

DISCUSSION:

Thunderstorm potential will increase late this afternoon through
early Saturday morning, with the potential to produce torrential rainfall
and flash flooding. Strong to severe storms will be most likely
from late this afternoon through this evening, with damaging winds
the primary severe weather threat, in addition to very heavy rainfall.
Behind the initial line of storms, additional heavy rain producing
thunderstorms will likely develop for some areas.
Heaviest rainfall amounts, in excess of 1.5 inches or more, are expected to
occur primarily over far northern Illinois north of Interstate 80.

Heat index readings will approach 105 degrees both today and
Saturday, mainly along and south of Interstate 80.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Limited Flooding Risk.
  Elevated Severe Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Sunday...
  Limited Severe Thunderstorm Risk.
Thursday...
  Limited Thunderstorm Risk.

In addition, flooding will continue along portions of the Fox and
Des Plaines Rivers.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed beginning this evening.

GENERAL STORM MOTION OF THE DAY:

Toward the east-southeast at 35 to 40 mph.

&&

$$

HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
137 PM EDT Fri Jul 21 2017

MIZ037>040-043>046-050>052-056>059-064>067-071>074-220830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
137 PM EDT Fri Jul 21 2017

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

.DAY ONE...Tonight

There is a slight risk of flooding and damaging thunderstorm wind
gusts late this evening south of a line from Muskegon to Battle
Creek.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A slight risk of flooding and damaging thunderstorm wind gusts
exists Saturday south of a line from Kalamazoo to Jackson.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$

HAZARDOUS WEATHER OUTLOOK
National Weather Service Grand Rapids MI
137 PM EDT Fri Jul 21 2017

LMZ844>849-220830-
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-
137 PM EDT Fri Jul 21 2017

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

.DAY ONE...Tonight

Thunderstorms could produce wind gusts in excess of 35 knots,
locally high waves, frequent lightning and torrential rain. The main
risk is south of Grand Haven.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms Saturday could produce wind gusts in excess of 35
knots, locally high waves, frequent lightning and torrential rain
south of South Haven.

$$

Ostuno

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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