Weather Alerts For Harsens Island, MI
Frost Advisory
-# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY FREEZE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING # DETAILS -------------------- WHAT For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. WHERE A portion of southeast Michigan. WHEN For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Saturday, April 18, 2026 at 2:21 PM EDT ISSUED BY National Weather Service Detroit/Pontiac MI HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Macomb, Genesee, Lapeer, Lenawee, Livingston, Monroe, Oakland, Saginaw, Shiawassee, St. Clair, Washtenaw, Wayne Including the cities of Flint, Warren, Monroe, Detroit, Howell, Owosso, Saginaw, Port Huron, Adrian, Pontiac, Ann Arbor, and Lapeer
Freeze Watch
-# HEADLINE -------------------- FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY FREEZE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY MORNING # DETAILS -------------------- WHAT For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. WHERE A portion of southeast Michigan. WHEN For the Frost Advisory, from 2 AM to 10 AM EDT Sunday. For the Freeze Watch, from Sunday evening through Monday morning. IMPACTS Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ISSUED AT Saturday, April 18, 2026 at 2:21 PM EDT ISSUED BY National Weather Service Detroit/Pontiac MI HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take steps now to protect tender plants from the cold. # AREAS AFFECTED -------------------- Macomb, Genesee, Lapeer, Lenawee, Livingston, Monroe, Oakland, Saginaw, Shiawassee, St. Clair, Washtenaw, Wayne Including the cities of Flint, Warren, Monroe, Detroit, Howell, Owosso, Saginaw, Port Huron, Adrian, Pontiac, Ann Arbor, and Lapeer