wgn weather.....7-day forecast
Sections of the Chicago area appear in for the rarest of winter commodities later Tuesday into Wednesday---a potential 20-inch or greater snow over at least sections of the metro area, with accumulations topping a foot or more elsewhere.
The bursts of comparatively light snow and flurries in the air as Tuesday gets underway are but a prelude to what lies ahead. A powerful low pressure is to lift northeast from Texas during the day. The huge spread in pressures between this storm and a frigid blast of arctic air within a huge high pressure diving southward from Montana along the front range of the Rockies, is behind our forecast of strengthening northeast winds across the Chicago area Tuesday--- and intensification expected to provoke full-blown blizzard conditions Tuesday night into Wednesday morning. A blizzard is defined as an extended period in which falling and/or drifting snow sent airborne by 35+ mph winds produces three or more consecutive hours with visibilities under a quarter mile.
Tom Skilling's 7-day forecast....
*
Tuesday
Snow
HI
24°
LO
21°
BLIZZARD WARNING FROM 3 PM TUESDAY TO 4 PM WEDNESDAY. Light snow flurries from a wintry overcast much of the day. NE winds strengthen 14 to 28 mph. Gusts topping 30 mph before evening. Steady storm snowfall spreads in from the south mid and late afternoon. Full-blown blizzard this evening and tonight. Serious blowing/drifting as gusts build to 40-50 mph. Bursts of thunder-snow and periods with less than a quarter mile visibility. Blizzard or near blizzard conditions persist into Wednesday morning. Totals: 14-22 inches by Wednesday afternoon.
*
Wednesday
Snow
HI
23°
LO
-2°
Blizzard conditions start the day with heavy accumulating snow and north winds gusting to 50 mph combining to give whiteout conditions in open areas. As snow lets up in Chicago, it intensifies over Indiana later in the day.
*
Thursday
Partly cloudy
HI
12°
LO
0°
Subzero early morning temperatures along with wind chills minus 10 to minus 20 degrees. The sun comes out, but temperatures struggle to reach double digits. Westerly winds 12 to 22 mph.
*
Friday
Partly cloudy
HI
20°
LO
12°
Partly cloudy and continued cold with temperatures about 8 degrees below normal. Highs around 20 degrees. Cloudy at night. Southwest winds 10 to 20 mph.
*
Saturday
Light snow
HI
26°
LO
16°
Not as cold with more clouds than sun and occasional snow showers. A steady snow possible overnight. Highs in the mid to upper 20. Gusty west to northwest winds.
*
Sunday
Mostly cloudy
HI
30°
LO
23°
Mostly cloudy and rather windy. Afternoon high temperatures peak out around 30 degrees. Southwest winds shift to the northwest 15 to 25 mph.
*
Monday
Snow
HI
28°
LO
10°
Sections of the Chicago area appear in for the rarest of winter commodities later Tuesday into Wednesday---a potential 20-inch or greater snow over at least sections of the metro area, with accumulations topping a foot or more elsewhere.
The bursts of comparatively light snow and flurries in the air as Tuesday gets underway are but a prelude to what lies ahead. A powerful low pressure is to lift northeast from Texas during the day. The huge spread in pressures between this storm and a frigid blast of arctic air within a huge high pressure diving southward from Montana along the front range of the Rockies, is behind our forecast of strengthening northeast winds across the Chicago area Tuesday--- and intensification expected to provoke full-blown blizzard conditions Tuesday night into Wednesday morning. A blizzard is defined as an extended period in which falling and/or drifting snow sent airborne by 35+ mph winds produces three or more consecutive hours with visibilities under a quarter mile.
Tom Skilling's 7-day forecast....
*
Tuesday
Snow
HI
24°
LO
21°
BLIZZARD WARNING FROM 3 PM TUESDAY TO 4 PM WEDNESDAY. Light snow flurries from a wintry overcast much of the day. NE winds strengthen 14 to 28 mph. Gusts topping 30 mph before evening. Steady storm snowfall spreads in from the south mid and late afternoon. Full-blown blizzard this evening and tonight. Serious blowing/drifting as gusts build to 40-50 mph. Bursts of thunder-snow and periods with less than a quarter mile visibility. Blizzard or near blizzard conditions persist into Wednesday morning. Totals: 14-22 inches by Wednesday afternoon.
*
Wednesday
Snow
HI
23°
LO
-2°
Blizzard conditions start the day with heavy accumulating snow and north winds gusting to 50 mph combining to give whiteout conditions in open areas. As snow lets up in Chicago, it intensifies over Indiana later in the day.
*
Thursday
Partly cloudy
HI
12°
LO
0°
Subzero early morning temperatures along with wind chills minus 10 to minus 20 degrees. The sun comes out, but temperatures struggle to reach double digits. Westerly winds 12 to 22 mph.
*
Friday
Partly cloudy
HI
20°
LO
12°
Partly cloudy and continued cold with temperatures about 8 degrees below normal. Highs around 20 degrees. Cloudy at night. Southwest winds 10 to 20 mph.
*
Saturday
Light snow
HI
26°
LO
16°
Not as cold with more clouds than sun and occasional snow showers. A steady snow possible overnight. Highs in the mid to upper 20. Gusty west to northwest winds.
*
Sunday
Mostly cloudy
HI
30°
LO
23°
Mostly cloudy and rather windy. Afternoon high temperatures peak out around 30 degrees. Southwest winds shift to the northwest 15 to 25 mph.
*
Monday
Snow
HI
28°
LO
10°
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