First snow statistics: 243 days since last measurable snowfall on March 22nd.
From October-level warmth to wintry conditions
Tuesday’s 63° the final truly mild day for quite some time; snow in the forecast
Tuesday’s unseasonably mild weather had the Midwest basking in October-level warmth
The mild temperatures occurred with gusty southwest winds.
Blustery weather change to bring the first round of wintry weather in more than seven months
Wednesday begins with extensive cloud coverage and a possible AM shower before a brief period of mixed sunshine, but clouds quickly fill back in and a rain/snow mix arrives toward evening.
Chicago’s fast-changing temperatures: From the mid to upper 40s early Wednesday afternoon to the mid-30s by Wednesday evening.
Model “ensemble” guidance place the probability of seeing at least 1” or more of snow at 90% across the Chicago area.
24-hour period Wednesday evening through Thursday evening.
Tracking the evolution of precipitation at various times
7:30 AM Wednesday: light rain moves through.
1PM Wednesday: brief period of possible sunshine.
7PM Wednesday: Wintry mix of chilly rain and wet snow,
6:30 AM Thursday: Cloudy, possible brief lull before wet snow arrives from the north.
9AM Thursday: Wet snow begins to overspread the area.
11AM Thursday: Wet snow covering the entire metro area.
1:30 PM Thursday: Wet snow continues to fall across most of the area.
4:30 PM Thursday: Warmer air moves in and precipitation mixes with and or changes over to rain.
8:30 PM Thursday: Chilly light rain and or sprinkles continue across the area.
4AM Friday: Light rain and sprinkles continue, steadier “lake effect” rain showers across NW Indiana.
5:30 AM Friday: Clouds linger across the entire area, rain winds down except northern Indiana where lake effect showers continue.
Final rainfall tallies from Monday/early Tuesday weather system
Heaviest area totals
November precipitation surplus continues to grow.
Tracking the coldest air of the season which arrives later next week around or just beyond Thanksgiving Day.
Forecast 850 mb (one mile above the ground) temperature anomalies—this is a good proxy indicator of how much temperatures will be above or below normal at the surface.
NOTE: Red and orange colors depict areas of above normal; blue and purple colors indicate areas of colder than normal temperatures relative to normal. The darker the colors, the greater the temperature departure from normal.
(Except for the headline, this story has not been edited by PostX News and is published from a syndicated feed.)
