Chicagoland weather radar [LIVE PRECIPITATION TYPE RADAR] shows an area of snow moving west to east along a line just north of Interstate 80 and approaching Joliet at 1:50 p.m.
Snow is expected to gradually push north. The snow we are about to receive is not another of the Alberta Clippers that we have been hit with week after week. We’re about to experience a good old-fashioned Low Pressure hook, which will mean heavy, wet snow, and ice and rain just to the south of the heavy snow line.
Snow is likely to start in Arlington Heights and the northwest suburbs some time between 6:00 p.m. and 10 p.m. Friday with the heavier snow and faster accumulation after midnight. The forecast calls for about 2.3 inches by 6:00 a.m. Saturday morning and a final total of 6.5 inches by 6:00 p.m. Saturday. The approaching system could track further north, which could bring heavier snow to the northwest suburbs — in the neighborhood of 6-8 inches. The shift would also bring a larger area of freezing rain and winter mix to the south and southwest suburbs of Chicago. Ice accumulation is expected to be less than one-half inch in the south suburbs.
Satellite images show that much of Illinois is under clouds, with the storm system clearly defined.
Mostly cloudy conditions are forecast to continue today and Saturday with clearing after 7:00 p.m. Saturday, along with a temperature drop — 26 degree at 4:00 p.m. down to 4 degrees at 5:00 a.m. Sunday.
Wind gusts of 17-20 MPH from the north and northwest are forecast from 11:00 a.m. to midnight late Saturday.
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with solar azimuth and trajectory, times for dawn, sunrise, solar noon, sunset, dusk …
URGENT – WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1042 AM CST FRI JAN 31 2014
…WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 PM
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WARNING FOR HEAVY SNOW…WHICH IS IN EFFECT FROM 9 PM THIS
EVENING TO 6 PM CST SATURDAY. THE WINTER STORM WATCH IS NO LONGER
* SNOW WILL DEVELOP LATE THIS EVENING AND INCREASE IN INTENSITY
AFTER MIDNIGHT WITH A PERIOD OF HEAVY SNOW POSSIBLE DURING THE
MID TO LATE MORNING HOURS OF SATURDAY. THE SNOW WILL END BY
EARLY SATURDAY EVENING.
* STORM TOTAL SNOW ACCUMULATION 6 TO 10 INCHES.
* SNOWFALL RATES OF ONE TO TWO INCHES PER HOUR ARE POSSIBLE MID
* SNOW COVERED ROADS AND LOW VISIBILITIES WILL MAKE TRAVEL
HAZARDOUS FROM LATE THIS EVENING THROUGH EARLY SATURDAY EVENING.
* TRAVEL THROUGH CHICAGO O`HARE AND MIDWAY AIRPORTS COULD ALSO BE
A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL…KEEP AN EXTRA FLASHLIGHT…
FOOD…AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.
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