Watches, Warnings & Advisories



3 products issued by NWS for:

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
342 PM EDT Fri Jun 20 2025

MIZ047>049-053>055-060>063-068>070-075-076-082-083-211000-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
342 PM EDT Fri Jun 20 2025

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...This Afternoon and Tonight

Isolated thunderstorms this afternoon ending this evening. Any
thunderstorm that develops is not expected to be severe, but will be
capable of wind gusts to 50 mph and hail under an inch in diameter.

Scattered to numerous thunderstorms expected to develop late tonight.
These thunderstorms look to be strong, with the potential to become severe.
Hail 1 inch or greater and torrential rain will be the main hazards,
with damaging winds to 60 mph also possible. Storm motion looks to
be southeast at 15-20 mph.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The scattered strong to severe thunderstorms early Saturday morning
will end by late morning. A heat advisory is in effect for late
Saturday afternoon into Saturday night. An Extreme Heat Watch remain
in in effect from Sunday through Tuesday evening. Please see the
latest urgent weather message for additional information.

The chance for strong thunderstorms returns for Tuesday through
Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is unlikely.

$$



Extreme Heat Watch

URGENT - WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
322 PM EDT Fri Jun 20 2025

MIZ047>049-053>055-060>063-068>070-075-076-082-083-210830-
/O.NEW.KDTX.HT.Y.0001.250621T1800Z-250622T1200Z/
/O.EXT.KDTX.XH.A.0001.250622T1200Z-250625T0000Z/
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-
Lapeer-St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-
Lenawee-Monroe-
Including the cities of Lapeer, Bay City, Warren, Monroe, Caro,
Pontiac, Owosso, Adrian, Ann Arbor, Saginaw, Sandusky, Midland,
Howell, Detroit, Flint, Port Huron, and Bad Axe
322 PM EDT Fri Jun 20 2025

...HEAT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 8 AM EDT SUNDAY...
...EXTREME HEAT WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

* WHAT...For the Heat Advisory, heat index values up to 102
  expected. For the Extreme Heat Watch, dangerously hot conditions
  with heat index values up to 105 possible.

* WHERE...All of southeast Michigan.

* WHEN...For the Heat Advisory, from 2 PM Saturday to 8 AM EDT
  Sunday. For the Extreme Heat Watch, from Sunday morning through
  Tuesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

Monitor the latest forecasts and warnings for updates.

Check with local emergency management officials for information on
cooling center availability.

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.

&&

$$

SF




Heat Advisory

URGENT - WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
322 PM EDT Fri Jun 20 2025

MIZ047>049-053>055-060>063-068>070-075-076-082-083-210830-
/O.NEW.KDTX.HT.Y.0001.250621T1800Z-250622T1200Z/
/O.EXT.KDTX.XH.A.0001.250622T1200Z-250625T0000Z/
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-
Lapeer-St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-
Lenawee-Monroe-
Including the cities of Lapeer, Bay City, Warren, Monroe, Caro,
Pontiac, Owosso, Adrian, Ann Arbor, Saginaw, Sandusky, Midland,
Howell, Detroit, Flint, Port Huron, and Bad Axe
322 PM EDT Fri Jun 20 2025

...HEAT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 8 AM EDT SUNDAY...
...EXTREME HEAT WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

* WHAT...For the Heat Advisory, heat index values up to 102
  expected. For the Extreme Heat Watch, dangerously hot conditions
  with heat index values up to 105 possible.

* WHERE...All of southeast Michigan.

* WHEN...For the Heat Advisory, from 2 PM Saturday to 8 AM EDT
  Sunday. For the Extreme Heat Watch, from Sunday morning through
  Tuesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

Monitor the latest forecasts and warnings for updates.

Check with local emergency management officials for information on
cooling center availability.

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.

&&

$$

SF