11/22/2021 Forecast Update
FORECAST SUMMARY:
FORECAST SUMMARY: Monday, November 22nd, 2021 through Monday, November 29th, 2021
PM-2.5: Overall PM-2.5 concentrations are expected to be Good for Michigan this week with some mid-Moderate hourly concentrations midweek.
FORECAST DISCUSSION:
Monday, November 22nd, will turn out to be a pleasant late-November day with a warmup Tuesday into Wednesday with surface temperatures nearing the mid-40s Fahrenheit for southern Michigan and low-40s Fahrenheit for northern Michigan. This warmup will be due to SSW winds lofting a warmer airmass to the Great Lakes region. Cooler temperatures return just in time for Thanksgiving as winds shift more northwesterly accompanied by a cold front Wednesday and into Thursday. This will bring temperatures back down to the low-30s Fahrenheit for much of Michigan. Going into the weekend, temperatures stick around the low-mid 30s Fahrenheit range with westerly winds.
In terms of concentrations, today, Monday, will have Good fine particulate concentrations. As winds shift to SSW midweek, concentrations will approach the Moderate range, with some pockets of mid-Moderate. As the winds shift back to NW along with the cold front later this week, the fine particulate concentrations will be pushed out of the region and return back to Good. For the weekend, concentrations will be in the Good category with some pockets of low-Moderate.
EXTENDED FORECAST:
Temperatures hang around the low-mid 30s Fahrenheit range with WNW winds going into next week. Concentrations are expected to be Good.