Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
410 AM EDT Fri Jul 3 2026
MIZ060>063-068>070-075-076-082-083-040000-
/O.CON.KDTX.XH.W.0001.000000T0000Z-260704T0000Z/
Shiawassee-Genesee-Lapeer-St. Clair-Livingston-Oakland-Macomb-
Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Warren, Howell, Owosso, Pontiac, Flint,
Ann Arbor, Adrian, Lapeer, Monroe, Port Huron, and Detroit
410 AM EDT Fri Jul 3 2026
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...Dangerously hot conditions with heat index values up to 105.
* WHERE...A portion of southeast Michigan.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Monitor the latest forecasts and warnings for updates.
Check with local emergency management officials for information on
cooling center availability.
&&
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Grand Rapids MI
653 AM EDT Fri Jul 3 2026
MIZ046-051-052-056>059-064>067-071>074-031900-
/O.CON.KGRR.HT.Y.0002.000000T0000Z-260704T0000Z/
Isabella-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-
Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
Including the cities of St. Johns, Hastings, Ionia, Jackson,
Kalamazoo, Charlotte, Holland, Battle Creek, Alma, South Haven,
Grand Rapids, Lansing, Mount Pleasant, Greenville, Jenison, and
Grand Haven
653 AM EDT Fri Jul 3 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...
* WHAT...Heat index values up to 100.
* WHERE...Portions of central, south central, and southwest Michigan.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
Duke
URGENT - WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
410 AM EDT Fri Jul 3 2026
MIZ047>049-053>055-040000-
/O.CON.KDTX.HT.Y.0003.000000T0000Z-260704T0000Z/
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-
Including the cities of Bad Axe, Midland, Bay City, Sandusky,
Caro, and Saginaw
410 AM EDT Fri Jul 3 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...
* WHAT...Heat index values up to 100.
* WHERE...Bay, Huron, Midland, Saginaw, Sanilac, and Tuscola
Counties.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Monitor the latest forecasts and warnings for updates.
Check with local emergency management officials for information on
cooling center availability.
&&
$$
DRK
URGENT - WEATHER MESSAGE
National Weather Service Northern Indiana
252 AM EDT Fri Jul 3 2026
INZ005>008-012>015-020-103-104-116-203-204-216-MIZ078>081-177-277-
040000-
/O.CON.KIWX.HT.Y.0003.000000T0000Z-260704T0000Z/
Elkhart-Lagrange-Steuben-Noble-Starke-Pulaski-Marshall-Fulton IN-
White-Northern La Porte-Eastern St. Joseph IN-Northern Kosciusko-
Southern La Porte-Western St. Joseph IN-Southern Kosciusko-Cass
MI-St. Joseph MI-Branch-Hillsdale-Northern Berrien-Southern
Berrien-
252 AM EDT Fri Jul 3 2026 /152 AM CDT Fri Jul 3 2026/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING...
* WHAT...Heat index values around 100.
* WHERE...Portions of northern Indiana and southwest Michigan.
* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
Marsili
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
638 AM CDT Fri Jul 3 2026
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-041145-
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-
638 AM CDT Fri Jul 3 2026
This Hazardous Weather Outlook is for the open waters of Lake
Michigan.
.DAY ONE...Today and Tonight
Patchy dense fog may occur over northern portions of the lake.
Chances for thunderstorms, mainly this afternoon with severe
possible.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Areas of dense fog may occur at times into the holiday weekend,
due to the very warm and humid airmass over the colder waters of
Lake Michigan.
There are chances for thunderstorms across the southern half of
the lake over the holiday weekend. Some strong to severe storms
may occur at times, though confidence remains low with the timing
of each round of storms.
$$
MRC
www.weather.gov/mkx
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
402 AM EDT Fri Jul 3 2026
LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-040900-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
402 AM EDT Fri Jul 3 2026
This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.
.DAY ONE...Today and Tonight
Scattered thunderstorms are possible this afternoon into tonight.
There is a Marginal to Slight Risk of severe weather, with damaging
wind gusts to 50 knots being the main hazard and large hail and
being a secondary hazard. Storms track east at 30 knots.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
There is a chance of marginally severe thunderstorms Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight.
$$
You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.
DRK
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
402 AM EDT Fri Jul 3 2026
MIZ047>049-053>055-040900-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-
402 AM EDT Fri Jul 3 2026
This hazardous weather outlook is for southeast Michigan.
.DAY ONE...Today and Tonight
A Heat Advisory is in effect. Refer to the latest weather message
for additional detail.
Scattered thunderstorms are possible this afternoon into tonight.
There is a Marginal Risk of severe weather, with damaging wind gusts
to 60 mph being the main hazard and large hail and being a secondary
hazard. Storms track east at 30 mph. Heavy rain or training storms
may present an isolated flood risk as well.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
There is a chance of marginally severe thunderstorms Saturday with
an isolated flood risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight.
$$
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
402 AM EDT Fri Jul 3 2026
MIZ060>063-068>070-075-076-082-083-040900-
Shiawassee-Genesee-Lapeer-St. Clair-Livingston-Oakland-Macomb-
Washtenaw-Wayne-Lenawee-Monroe-
402 AM EDT Fri Jul 3 2026
This hazardous weather outlook is for southeast Michigan.
.DAY ONE...Today and Tonight
An Extreme Heat Warning is in effect. Refer to the latest weather
message for additional detail.
Scattered thunderstorms are possible this afternoon into tonight.
There is a Marginal to Slight Risk of severe weather, with damaging
wind gusts to 60 mph being the main hazard and large hail and being
a secondary hazard. Storms track east at 30 mph. Heavy rain or
training storms may present an isolated flood risk as well.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
There is a chance of marginally severe thunderstorms Saturday with
an isolated flood risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight.
$$
