... A crossing upper low will keep the clouds and scattered rain showers locked in over the region today. Gusty northwest wind and falling temperature will accompany the rain. Dry weather returns on Wednesday.
NEAR TERM /THROUGH TODAY/... Overnight forecast in good shape. Lowered Pops as best large scale ascent is driving southeastward in the base of the passing trough.
Previous discussion... Behind the front, the passage of the 850mb low will turn wind at that level to the northwest, intensifying cold advection. The resulting steepening of lapse rates will improve mixing overnight, with surface wind gusts increasing to the 15 to 25 MPH range by dawn. Scattered showers will continue, with perhaps some lake enhancement possible toward dawn. Despite the cold advection increase, overnight low temperatures will remain above normal.
Scattered showers and much cooler temperatures can be expected today. Strong wind gusts are also anticipated due to a tightening surface pressure gradient, increasing mixing heights, which will tap into the crossing low-level jet, and the cold air advection. Wind gusts of 25 to 35 mph are possible.
SHORT TERM /TONIGHT THROUGH THURSDAY/... Dry weather will return Wednesday as a ridge builds in behind the exiting low.
Thursday looks to be the best day of the week as the ridge axis crosses the area.
LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... Another deepening trough is expected to track out of the Midwest late in the week, with rain chances returning. Seasonably cool temperatures are expected.