FORECAST SUMMARY: Wednesday June 15th, 2022, through Friday June 17th, 2022

OZONE:  Ozone concentrations are expected to reach USG-level today but will be Good to Moderate for the remainder of the week.

PM-2.5: PM-2.5 concentrations are expected to range from Good to Moderate throughout this week.

…AIR QUALITY ACTION DAY ADVISORY FOR WEDNESDAY JUNE 15TH FOR THE FOLLOWING COUNTIES…

IN WEST MICHIGAN:

ALLEGAN…BERRIEN…CASS… KENT… MASON…MUSKEGON…OCEANA…OTTAWA… VAN BUREN COUNTIES

 FORECAST DISCUSSION:

Today, Wednesday, is an Air Quality Action Day for the counties listed above for USG-level Ozone. High surface and upper-level temperatures, SW winds, and ample sunlight are expected to create a conducive environment for Ozone development. There is some relief to our west as a cold front and associated storm system approaches the Great Lakes region. The cold front is expected to pass through overnight into tomorrow morning bringing potential storms across the western and central Upper Peninsula later this afternoon into the evening. This will help to clean out the airmass as Ozone concentrations are expected to be in the Good to Moderate range for the remainder of the week.

Winds also shift to more westerly tomorrow for the Lower Peninsula and remain southwesterly for the Upper Peninsula. Temperatures are expected to remain in the 80s F tomorrow for much of Michigan, but as stated above, should not create a conducive environment for rapid Ozone development. Throughout the day on Friday, winds slowly shift to northwesterly with temperatures ranging from the upper-60s F to mid-70s F.

PM-2.5 concentrations are expected to remain in the Good to Moderate range. There appears to be a smoke plume over the Great Lakes region today and into tomorrow. However, this quickly exits the area come Friday.

EXTENDED FORECAST:

This weekend looks to be pleasant thanks to a High-pressure system drifting in from the north. This forecast will be updated on Friday as there appears to be another warmup early next week.

Forecast updated by: Alec Kownacki, Wednesday June 15th, 2022. Next Forecast update: Friday June 17th, 2022