7:05 p.m. (end of live blog)

Alyssa and Chip came back on the livestream and were briefly joined by WGN weather producer Bill Snyder to recap the storm so far. Following the weather discussion, WGN News Now sports reporter Larry Hawley came on to talk about Saturday’s Bears vs. Bills game as well as some Bears history playing in the cold.

This concluded the livestream and the live blog and can be viewed in the video above.

For the latest weather updates, check out the WGN Weather blog.

6:58 p.m.

6:00 p.m.

Snow accumulation update – totals are coming in even lower than predictions from this afternoon due primarily to the speed at which the storm front has moved through the area. The WGN weather team’s revised forecast calls for 2-4″ total with the bulk of the snowfall ceasing around 9 p.m. Thursday.

Some current snow totals:

  • Romeoville | 2.2″
  • Algonquin | 1.6″
  • Midway Airport | 1.6″
  • St. Charles | 1.5″
  • Arlington Heights | 1.0″

5:54 p.m.

From NWS Chicago:

Light snow continues to fall across the region, along with temperatures and wind chills. Gusty westerly winds linger overnight, with blowing snow remaining an issue. If planning to venture outside, bundle up, wind chills are expected to drop to -35F.

5:30 p.m.

From NWS Weather Prediction Center:

The ongoing major winter storm will continue to produce areas of heavy snow, strong winds, and life-threatening wind chills through Saturday. If traveling for the holiday, please use extreme caution and pay attention to the latest forecasts and updates.

5:10 p.m.

A few weather data points at this time:

  • The air temperature in Chicago has dropped 23 degrees from 24 hours ago
  • The temperature at O’Hare International Airport is 6 degrees while it is -2 degrees in Dekalb
  • The feels-like temperature at O’Hare is -12 degrees while it is -24 degrees in Aurora
  • Current sustained winds are between 16 and 30 mph
  • Current wind gusts are between 20 and 39 mph
  • Visibility to heavily reduced across the metro getting down to .25 mile in northern Cook and southern Lake counties along Lake Michigan

4:42 p.m.

From the Chicago Transit Authority (CTA):

Buses are being rerouted away from outer DuSable Lake Shore Drive because of conditions from severe weather.

4:29 p.m.

From NWS Chicago:

Bitter cold temperatures and wind chills continue to push into the region this afternoon. This trend continues overnight, lingering through the remainder of this week into the upcoming weekend as gusty westerly winds hold in place.

4:26 p.m.

From IDOT:

Very little of the state is free of snow and ice at this point. Take your evening commute extra slow, and stay in tonight if you can. Bitter cold will keep roads extremely slippery.

4:00 p.m.

From NWS Aviation Weather Center

Travel conditions won’t get much better tomorrow as the big winter storm continues its trek across the eastern half of the country. Expect delays at most airports east of the Mississippi, with NewYork most likely to be impacted.

3:56 p.m.

From NWS Milwaukee:

Wind chills will drop tonight to around -35 degrees leading to dangerous outdoor conditions. At these wind chills, frostbite may occur on exposed skin in as little as 10 to 15 minutes.

Winds will also increase overnight and gust to between 45 to 55mph Friday into early Saturday morning. Blowing and drifting of snow already on the ground will be possible in more flat and open areas of southern WI accompanied by drops in visibility.

3:23 p.m.

From NWS Chicago:

Here are key messages for the continued winter weather through tomorrow. Gusty winds and dangerously cold temperatures will become the norm tonight and especially Friday. Stay indoors, if you can!

Although snow will taper from west to east overnight, increasingly gusty winds will lead to areas of blowing snow reducing visibility especially in open and rural areas. North to south-oriented roadways will be most susceptible to blowing snow.

Temperatures will continue falling through the overnight hours with gusty winds leading to dangerous wind chills as low as 30 to 35 degrees below zero! If you must venture outdoors, cover up from head to toe in multiple layers.

The cold stretch will only last through this weekend before temperatures warm into next week. A clipper system may move through the Mississippi River Valley on Monday bringing another shot of snow.

2:57 p.m.

From NWS Chicago:

An area of moderate snowfall is tracking through far northwest Indiana, leading to snow covered roadways and hazardous conditions. A quick accumulation is expected, especially as temperatures begin to fall and wind chills drop below zero.

2:56 p.m.

2:21 p.m.

From NWS’s national office:

2PM CST Temperatures and 12PM CST Surface Weather Map. Arctic air is plunging south across the central U.S. behind a sharp cold front

2:16 p.m.

From O’Hare Intl. Airport:

In anticipation of winter weather arriving to the Chicagoland area, airlines at O’Hare have proactively canceled nearly 540 flights. For the most up-to-date flight info, please check directly w/ your carrier.

2:04 p.m.

Visibilities have dropped to below one mile across the Chicago area with isolated areas down to less than half a mile including Aurora and Kenosha.

From NWS Chicago:

Pockets of moderate snowfall continue across portions of northeast Illinois this afternoon, with visibility greatly reduced due to strong winds blowing snow around. Roadway conditions will continue to deteriorate this afternoon as potential for rapid freeze increases.

1:36 p.m.

WGN meteorologist Alyssa Donovan: The latest models show most of the accumulating snow will be on Thursday as the cold front pushes through the area. Other recent predictions for wind speeds and wind chills have not changed, which includes wind chills down to -30 Friday morning.

1:30 p.m.

From the Illinois Department of Transportation (IDOT):

Conditions continue to deteriorate as the storm moves east. If you have to be out, give our drivers plenty of room to work. Roads will be better off behind the plows.

1:25 p.m.

From the Nation Weather Service’s (NWS) Chicago office: Wind will only increase from this point forward and especially on Friday leading to areas of blowing snow and low visibility. With crashing temperatures, it’s not pleasant out there!

1:12 p.m.

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1:00 p.m.

Our hosted livestream is underway. We are taking your questions about current weather predictions.

12:40 p.m.

Currently showing live radar. Hosted livestream and live blog set to begin at 1 p.m.

WGN meteorologist Alyssa Donovan and WGN News Now host Chip Brewster will bring you up to the minute information on the livestream from 1-3 p.m. and again from 7-8:30 p.m.

Chip will pop on sporadically between 3 and 7 p.m. while updating the blog below and running the live radar.