FORECAST SUMMARY: Monday, June 26th, 2023, through Tuesday, June 27th, 2023
OZONE: Ozone concentrations are expected to be in the Good to low-Moderate range.
PM-2.5: PM-2.5 concentrations are expected to be in the Moderate to USG range, with some hourly concentrations in the Unhealthy range
FORECAST DISCUSSION:
Updated models for smoke are now showing wildfire smoke impacting the majority of the Lower Peninsula tomorrow, June 27th. Due to the spontaneous nature of these smoke plumes, we are issuing an Air Quality Alert for the entire Lower Peninsula tomorrow, June 27th, making the in-place Air Quality Alert, a Statewide Alert. This is in addition to the already in-place Air Quality Alert for the Upper Peninsula today, June 26th and tomorrow, June 27th. As of now, the majority of the smoke will stay to the west towards the Lake Michigan shoreline, but smoke should be expected to drift eastward. The main cause of this plume is the aforementioned Low-pressure moving out of the area and wrapping the smoke around with it. Southeast Michigan may receive less PM-2.5 concentrations but if there are any remaining background concentrations, the combination of the two may cause concentrations to reach the USG level.
EXTENDED FORECAST: Once the Low-pressure leaves the area, a High-pressure system sets up to our north bringing clear skies and a warmup.
Forecast updated by: Alec Kownacki: Monday, June 26, 2023
Next Forecast Update: Tuesday, June 27, 2023