Chicago, Illinois

... Winter Storm Warning remains in effect until 9 am CST
Wednesday...

A Winter Storm Warning remains in effect until 9 am CST
Wednesday.

* Timing... snow will continue into tonight... with snow likely
becoming heavy at times during the late afternoon into the early
evening hours. Considerable blowing and drifting of the freshly
fallen snow is likely tonight into very early Wednesday morning.

* Accumulations... light to moderate snowfall this morning into the
early afternoon will result in hourly snowfall rates of
generally a half inch or less. Localized lake enhancement of the
snowfall is likely into the evening resulting in periods of
heavy snow with snowfall rates reaching an inch or more per hour
at times. A storm total by late tonight of 8 to 12 inches is
expected... though the lake enhancement of the snow may result in
locally heavier amounts.

* Hazards... in addition to the long duration accumulating
snowfall... northwest winds will increase to 15 to 25 mph with
gusts between 30 and 35 mph tonight into early Wednesday
morning resulting in considerable blowing and drifting snow...
particularly in more open and outlying areas. The potential
exists for near ground blizzard conditions in rural areas
tonight into early Wednesday morning.

* Impacts... travel will continue to be significantly hampered by
the snow storm... especially during this evening's rush hour.
Snow may fall heavily enough at times that even major roads and
highways could become snow covered. Blowing and drifting snow
tonight will result in near ground blizzard conditions in
outlying areas making travel very dangerous. The snow storm is
also severely affecting air travel with hundreds of flights
already cancelled to and from Chicago.

Precautionary/preparedness actions...

A Winter Storm Warning means significant amounts of snow...
sleet... ice... or strong winds are expected or occurring. This
will make travel very hazardous or impossible. If you must
travel... keep an extra flashlight... food... and water in your
vehicle in case of an emergency.

... Areas of heavy snow over northeast Illinois this evening...

A Winter Storm Warning remains in effect across all of northern
Illinois and Northwest Indiana through tonight.

Snowfall across northeast Illinois has become More Lake enhanced
and is showing signs of consolidating into a lake effect
plume... or concentrated band of snow. This snow plume currently
extends from near Winnetka... to ohare Airport... to near
Lisle... then southward through the Joliet area. Snow is falling at
the rate of 1 to 2 inches per hour within this band.

This lake effect band will be shifting slowly eastward from the
suburbs... across the city of Chicago proper between 9 and 11 PM
CST.

To the west of this band... light snow will continue through
midnight before diminishing to flurries.

02/09/2010 0857 PM

Northbrook, Cook County.

Snow m10.2 inch, reported by amateur radio.


            Storm total snow. 2.1 inches over the last three hours.





02/09/2010 0847 PM

Ohare Airport, Cook County.

Snow m7.5 inch, reported by official NWS obs.


            Storm total snow so far from observer. Moderate snow
            continues.




02/09/2010 0848 PM

3 miles SW of midway airpor, Cook County.

Snow m6.6 inch, reported by co-op observer.


            Storm total snow so far.





02/09/2010 0833 PM

Elk Grove Village, Cook County.

Snow m7.6 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0805 PM

Oak Lawn, Cook County.

Snow m8.1 inch, reported by trained spotter.


            Storm total so far.




02/09/2010 0749 PM

Des Plaines, Cook County.

Snow m9.0 inch, reported by public.


            9 inches of snow for storm so far. 4 inches of snow has
            fallen since noon.





02/09/2010 0700 PM

Lincolnwood, Cook County.

Snow m7.0 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0645 PM

Arlington Heights, Cook County.

Snow m6.8 inch, reported by trained spotter.


            Storm total snow so far.




02/09/2010 0630 PM

Elk Grove Village, Cook County.

Snow m5.0 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0638 PM

Mount Prospect, Cook County.

Snow m6.0 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0600 PM

Northbrook, Cook County.

Snow m8.1 inch, reported by amateur radio.


            Storm total snow so far.




02/09/2010 0600 PM

Elk Grove Village, Cook County.

Snow m5.2 inch, reported by trained spotter.


            Storm total snow so far.




02/09/2010 0610 PM

Northbrook, Cook County.

Snow m8.2 inch, reported by trained spotter.


            Storm total snow so far. Currently snowing around 0.75
            inches per hour.




02/09/2010 0600 PM

Ohare Airport, Cook County.

Snow m2.4 inch, reported by official NWS obs.


            2.4 inches of snow between 18z and 00z. Storm total snow
            so far of 5.1 inches.




02/09/2010 0612 PM

3 miles SW of midway airpor, Cook County.

Snow m4.4 inch, reported by co-op observer.


            Total 4.4 inches at site midway 3sw /Burbank/ as of 600
            PM CST.





02/09/2010 0548 PM

Morton Grove, Cook County.

Snow m6.9 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0508 PM

Orland Hills, Cook County.

Snow m3.7 inch, reported by trained spotter.


            Storm total snow so far.





02/09/2010 0447 PM

Mount Prospect, Cook County.

Snow m5.0 inch, reported by trained spotter.


            Storm total snow so far.




02/09/2010 0442 PM

1 miles NNE of Park Ridge, Cook County.

Snow m6.7 inch, reported by trained spotter.


            Storm total snow.




02/09/2010 0207 PM

Northbrook, Cook County.

Snow m5.3 inch, reported by trained spotter.


            2 inches of snowfall over the past 4 hours. Storm total
            5.3 inches storm total.





02/09/2010 1245 PM

Arlington Heights, Cook County.

Snow m1.7 inch, reported by trained spotter.


            1.7 inches snowfall in the past 4 hours. 4 inches of snow
            on the ground.





02/09/2010 1240 PM

3 miles SW of midway airpor, Cook County.

Snow m3.5 inch, reported by co-op observer.


            Storm total so far.





02/09/2010 1200 PM

ESE Elk Grove vill, Cook County.

Snow m3.1 inch, reported by trained spotter.


            Storm total so far.





02/09/2010 1214 PM

Ohare Airport, Cook County.

Snow m2.7 inch, reported by official NWS obs.


            1.7 inches snowfall from 6 am to 12 PM. Storm total so
            far 2.7 inches.





02/09/2010 1100 am

1 miles E of Lincolnwood, Cook County.

Snow m2.1 inch, reported by trained spotter.


            2.1 inches of snowfall in the past 4 hours. 4 inches of
            snow on the ground.





02/09/2010 1100 am

1 miles ESE of Glenwood, Cook County.

Snow m0.5 inch, reported by trained spotter.


            0.5 inches of snowfall past 2 hours. 2.6 inches on
            ground.





02/09/2010 1027 am

Northbrook, Cook County.

Snow m3.3 inch, reported by trained spotter.


            Storm total so far.





02/09/2010 1011 am

Mount Prospect, Cook County.

Snow m3.1 inch, reported by trained spotter.


            Storm total so far.





02/09/2010 0916 am

Arlington Heights, Cook County.

Snow m2.3 inch, reported by trained spotter.


            Cocorahs report.





02/09/2010 0900 am

1 miles ESE of Glenwood, Cook County.

Snow m0.4 inch, reported by trained spotter.


            0.4 inches past 2 hours. 2.5 inches on ground. Cocorahs
            report.





02/09/2010 0900 am

3 miles SW of midway airpor, Cook County.

Snow m2.4 inch, reported by co-op observer.






02/09/2010 0600 am

Orland Hills, Cook County.

Snow m1.5 inch, reported by trained spotter.

Snowfall and snow depth reports.
Data provided by National Weather Service Chicago area and Rockford
area snowfall team.

                12 hr snowfall 12 hr snowfall total
location ending 6pm ending 6am snow
                today today depth at 6pm
Illinois

Batavia / 1.0 /
Beach Park 7.3 / 1.3 / 8
Beecher 1.3 / 2.6 / 5
Downers Grove 3.4 / 1.6 / 5
Frankfort / 2.6 /
Grayslake 8.1 / 1.5 / 10
Huntley 3.8 / 0.8 / 4
La Grange / 1.9 /
Melrose Park 3.0 / 2.0 / 5
Naperville 2.7 / 1.8 / 5
Oak Brook 3.9 / 1.4 / 5
Peotone 2.0 / 2.1 / 6
Plainfield 4sw 2.5 / 2.6 / 5
Richton Park 2.1 / 2.4 / 6
South Beloit 3se / 3.5 /
WillowBrook 2.8 / 2.0 / 7
Yorkville 2se 3.2 / /

Northwest Indiana

Highland 3.4 / 1.8 / 5