Monday, February 25th, 2019 through Monday, March 4th, 2019
PM-2.5: 24-hour Fine Particulate concentrations are expected to range from Good to low Moderate through the week; Good readings are expected early next week.
Northwest winds behind the strong weekend storm will keep fine particulate in the Good range Monday. A weak disturbance moving through brings snow into the forecast later Tuesday, lasting into Wednesday. Winds will be light during this period; therefore, fine particulate will range from Good to low Moderate. High pressure moves in for a short time Thursday with lighter winds expected; Good to low Moderate fine particulate will continue.
Winds turn southeasterly/easterly Friday ahead of a weekend storm system. This system tracks across the Great Lakes bringing snow into the forecast later Friday through Saturday. Fine particulate may reach low Moderate again Friday; however, any Moderate fine particulate will improve to the Good range Saturday as arctic air moves in on a strong northwest wind.
Extended models show lake effect snows lingering into Sunday as northwest winds continue. High pressure also moves in and will bring quiet, but cold, conditions on Monday. Good fine particulate can be expected early next week.