FORECAST SUMMARY:
Monday, October 28th, 2019 through Monday, November 4th, 2019
Ozone: 8-hour Ozone concentrations will be Good.
PM-2.5: 24-hour Fine Particulate concentrations will be mostly Good with only a few chances for low Moderates.
FORECAST DISCUSSION:
A frontal boundary slowly moves east through the state Monday bringing with it clouds and some precipitation. This boundary positions itself just south of the state the next few days and systems moving along it will keep precipitation in the forecast. Temperatures will be cool enough by mid-week that some areas in the Lower Peninsula will see the first snowflakes of the season.
A stronger low rides along the boundary on Halloween with gusty northerly winds developing as the storm moves northeast. An upper level trough develops late in the week keeping temperatures cool and scattered precipitation (lake effect rain and/or snow) in the forecast through much of the weekend.
As for air quality, lighter winds early in the day may allow for a few hours of Moderate fine particulate through mid-week, but daily averages should remain mostly Good. Northerly winds much of the weekend will keep air quality Good.
EXTENDED FORECAST:
Extended models show a system possibly bringing scattered precipitation late Monday/early Tuesday. Southerly winds ahead of the system could allow for a few low Moderates Monday but generally Good air quality should prevail through early next week.