FORECAST SUMMARY:
Monday, June 8th, 2020 through Friday, June 12th, 2020
OZONE: 8-Hour average Ozone concentrations will be mostly Moderate with isolated USG during Monday and Tuesday, then Good to Low Moderate the remainder of the forecast period.PM-2.5: 24-hour average Fine Particulate concentrations will also be mostly Good to Low Moderate.
FORECAST DISCUSSION
Monday and Tuesday will be the most interesting days of this forecast period. The week starts with strong upper ridging which will promote very warm to hot conditions today and Tuesday with plenty of sunshine.
Long days with strong sun always get our attention in terms of Air Quality. Fortunately, the position of approaching short-wave systems will align winds to the southeast. That will spare the Lake Michigan counties since they will not pick up pollutants that might be out over Lake Michigan. Which is good because those counties did see some USG levels last Tuesday.
The only real area of concern will be northwest of the Detroit area. We could see some isolated USG readings around the Flint area but I do not expect it to be widespread. As such, I do not think any advisors are warranted.
The first of two short-waves will pass late Tuesday. Some pop-up convection could occur during the afternoon. The second short-wave will pass late Wednesday afternoon will more opportunity for convective activity. After the passage of the second-wave, winds will shift westerly and drop daily high temperatures to around 70.
EXTENDED FORECAST:
Air Quality should remain mostly Good going into the weekend.