Metro Detroit Issues 4Warn Weather Alert for Thursday Night
A 4Warn Weather Alert has been officially issued for Metro Detroit, effective from Thursday night through Friday morning. This alert serves as a notification of upcoming weather conditions that are expected to be inconvenient for residents.
Weather Forecast Summary
Scattered showers are anticipated to start in the western suburbs as early as late Thursday morning, December 18, 2025. As the day progresses, rainfall will become more widespread, potentially accumulating to over half an inch by early evening.
Wind and Temperature Changes
- Wind gusts may reach 30-40 mph by Friday morning.
- Temperatures are expected to rise to around 50°F during the day.
- A significant drop in temperature below freezing will occur overnight.
This drastic temperature change increases the risk of flash freeze conditions, especially on roadways as arctic air returns to the area.
Implications of Weather Changes
From midday Thursday until just after midnight, rain will dominate the forecast. The combination of rainfall and melting snow will lead to moisture accumulation at the surface, complicating drying efforts, even with the predicted gusty winds.
Flash Freeze Risk
Timing is critical for the anticipated drop below freezing. If temperatures fall around 3 a.m., the potential for icy roads becomes heightened. A delayed temperature drop could allow roads to be treated more effectively, lessening hazardous conditions by the morning commute.
Snow Accumulation and Recommendations
After midnight, precipitation is expected to shift to light snow showers, with isolated snow squalls possible into Friday afternoon. Some regions could see up to an inch of snow accumulation.
- Be cautious of icy conditions that may be concealed by snow.
- Safe travel is advised during the Friday morning rush hour.
Residents of Metro Detroit are encouraged to stay informed about changing weather conditions and to drive with care during this period of instability.
