FORECAST SUMMARY: Friday December 6th, through Monday December 9th 2024
OZONE:
November marks the end of the 2024 ozone season. The 2025 ozone season will begin on March 1st.
PM-2.5:
PM-2.5 concentrations are expected to be in the Good to low-Moderate range.
FORECAST DISCUSSION:
The first weekend of December is upon us and boy did Michigan get a snowy welcome from the month of December. Numerous areas across the state piled up snow due to persistent lake effect snow and the aforementioned Alberta Clipper that was mentioned in the Monday forecast. With the Alberta Clipper, cold temperatures were brought into the region via northwesterly winds. These frigid temperatures will persist through much of today, Friday, and the beginning half of Saturday until winds shift to a more southwesterly direction. This is due to a High-pressure system to our north moving towards the east. These southerly winds, however, will be short-lived as a Low-pressure system drops down from Canada early Sunday which will bring in slightly cooler temperatures for the northern regions of Michigan. The Michigan lake effect snow belts will see persistent flurries this weekend due to the changing wind patterns, adding to their already impressive snow totals.
For air quality this weekend, Good to low-Moderate concentrations are expected for PM-2.5. As winds shift from the south, more particulates will enter the state so scattered low-Moderate concentrations are expected then.
EXTENDED FORECAST:
A slight, yet quick warm up is expected early next week with the 40s returning to the state. Another system looks to cross over Michigan Tuesday into Wednesday next week which will drop our temperatures back into the 20s. Overall air quality will be in the Good to low-Moderate range.
Next Forecast Update: Monday December 9th, 2024