6AM Storm Update

6AM until Noon:  Light snow tapers to flurries or ends.  Additional accumulation: 1/2″ or less, resulting in a storm total of 3″ to 6″.    

Noon to 6PM:  Occasional flurries.  No additional accumulation.

 

MAP LEGEND:

White:   Snow Advisory/Winter Weather Advisory

Yellow:  Winter Storm Watch

Red:      Winter Storm Warning

WGN Weather Center 7 Day Forecast

Chicagoans waking up to the "World's Largest Slushie"

Prepare to “slosh”

Waterproof shoes are mandatory today after a heavy (heavy-as in high water content), wet snow fell overnight.   The type of snow that is great for snowballs- as long as you are not on the receiving end. 

The waterlogged slush/snow is sticking to everything, including trees, signs and power lines.  The excess weight may be too much for some tree limbs or power lines, and a few scattered power outages are possible. 

zmh snow downtown

3:00AM Storm Update

3AM until 7AM:    Light snow continues across most of the Chicago area.  An occasional burst of moderate snow is possible until 6AM.    Additional accumulation: 1″ to 2″ bringing the storm total to 3″ to 6″ by 7AM.

7AM until Noon:  Light snow tapers to flurries or ends.  Additional accumulation: 1/2″ or less, resulting in a storm total of 3″ to 7″.    

Noon to 6PM:  Occasional flurries.  No additional accumulation.

 

MAP LEGEND:

White:   Snow Advisory/Winter Weather Advisory

Yellow:  Winter Storm Watch

Red:      Winter Storm Warning

WGN Weather Center 7 Day Forecast

Rain-snow line not budging

At 1AM, snow continues to fall over most of the Chicago area.  The lone exception is along and south of a Kankakee-Valparaiso-South Bend line where the snow is melting before reaching the ground (also known as rain). 

Temperatures are hovering around 32 degrees at this late hour, and some of the snow that’s on the ground is also melting.

WGN Weather Center 7 Day Forecast

12AM Storm Update: Tonight's snow exceedingly slushy, lacks "fluff"

Light to moderate snow will continue across most of the Chicago area overnight.  Two to three inches of snow has accumulated since 6PM, and an additional one to three inches (see map below) is expected over the next 6 hours (Midnight through 6AM). 

Total accumulation by 9AM Monday is now anticipated to be in the 3″ to 7″ range.   The heavy and wet nature of this snowfall is resulting in extremely low snow to water ratios, in the order of 7:1 (7 inches of snow for every one inch of liquid- a normal range is anywhere from 10:1 to 12:1).  These low ratios, or lack of “fluff”, will keep the total accumulation in check. 

The official snowfall accumulation through Midnight at Chicago’s Midway Airport is 2.2″ 

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Heavy wet snow blasts Chicago area

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For the very latest on this developing winter storm, follow the link below to the WGN Severe Weather Blog.

http://weblogs.wgntv.com/chicago-weather/severe-weather/

A rain-snow mixture turned into a heavy, wet snow overnight that was expected to lay a band of 4 to as much as 9 inches of snow across the region. By mid-Sunday evening up to 2 inches had fallen in areas along Interstate Highway 80 while totals in western Illinois were approaching 7 inches near Macomb.

With temperatures hovering near freezing the snow was heavy and wet in nature, making it difficult to shovel and causing tree limbs to sag under its weight. The storm was expected to send Chicago’s official February snow total above 20 inches for the third time in the past four years, and bring the city its third consecutive 50-plus-inch snow season for only the second time in history.

The snow should end just after this morning’s commute, setting the stage for a cold last week of February. Afternoon high temperatures should range from the upper 20s to middle 30s which would close the books on February 2010 with only one 40-degree day — a 42-degree high on Feb. 19. The cold weather should persist as March opens with below-normal temperatures expected to cover most of the eastern half of the nation.