11/15/2021 Forecast Update
FORECAST SUMMARY:
FORECAST SUMMARY: Monday, November 15th, 2021 through Monday, November 22nd, 2021
PM-2.5: PM-2.5: 24-hour average Fine Particulate levels will range between Good and middle Moderate through the forecast period.
FORECAST DISCUSSION:
Aside from snow showers across the northern lower peninsula, conditions are expected to be cold, but relatively drier Monday. A warm-up is expected starting Tuesday lasting into Wednesday as the high-pressure system tracks through and brings southerly winds. However, a cold front and an upper trough will bring cooler air back over the state Thursday into Friday. On and off chances for precipitation can be expected this week. With an active pattern starting mid-week prolonged periods of stagnation are not anticipated. This will help keep fine particulate from significantly increasing.
Northerly winds should keep fine particulate levels Good on Monday. Winds change to a southerly component as we approach mid-week. Moisture can be expected to increase around then as well which could aid in increases of fine particulate towards the low Moderate range Tuesday and Wednesday. Any Moderate readings should improve to Good Thursday and Friday as a cold front and upper trough bring in cleaner air on a cold northwest wind.
EXTENDED FORECAST:
Extended models show a high-pressure system quickly passing through the region with warmer air again Saturday, but the next system could bring precipitation and cooler air back into the forecast as early as Sunday. The on and off weather systems through the weekend will hamper significant increases in fine particulate. Levels should range from Good to low/middle Moderate through early next week.