The Winter Storm for January 25-26, 2021 began with graupel at about 4:40 p.m. in Arlington Heights. Wet snow and heavy snow (snow water ratio 10:1) will fall from 6:00 p.m. Monday until about 3:00 a.m. Tuesday at a rate of .75 to 1.0 inch per hour.
Snow Water Ratio
10:1 is average wet snow, which amounts to 10 inches of snow for 1 inch of water. Snow Water Ratio 5:1 is much wetter snow. Snow Water Ratio 20:1 to 30:1 ratio is much dryer snow that occurs in snow that falls in the teens and single digits.
Snow cover over the wet snow will be dryer and fluffier about dawn and during the day on Tuesday when snowfall rates will be about 0.3 to 0.5 inches per hour. Significant tapering off of snowfall will begin about 6:00 p.m. on Tuesday, but snow flurries will continue all the way to about 11:00 a.m. Wednesday. No freezing rain or sleet is expected with this storm near Arlington Heights.
Wind gusts from the northwest will peak between 7:00 p.m. and 11:00 p.m. from 34-35 MPH, and will continue in excess of 25 MPH until about 4:00 p.m. Tuesday. Winds will shift from the north about 8:00 p.m. Tuesday and continue through Wednesday.
Weather Radar) shows precipitation moving southwest to northeast over most of northern Illinois.
Moderate snowfall is moving into portions of northern Illinois. Heaviest precipitation is along and north of I-80. pic.twitter.com/P6o89I0ELg
— NWS Chicago (@NWSChicago) January 25, 2021
[4:30 PM 1/25/2021] Here is an overview of the most likely precipitation types we are expecting late tonight and tomorrow morning. Further to the north will be mostly snow, and further to the south will be freezing rain/drizzle. A mixture is likely in between. pic.twitter.com/uTMMHMrUff
— NWS Chicago (@NWSChicago) January 25, 2021
Strong, gusty winds out of the east-northeast at 30-40 mph will build waves to 8-13 feet through the overnight hours. This will cause lakeshore flooding across northeast Illinois and parts of northwest Indiana. Avoid trails, piers, and other structures long the lake. pic.twitter.com/8Wl78LI1aD
— NWS Chicago (@NWSChicago) January 25, 2021
[3:30 PM 1/25/2021] Snowfall will soon begin across portions of northern Illinois. The current forecast is for the heaviest snowfall to occur along and north of I-80 where a band of 4-7 inches is likely. Higher totals are possible closer to Lake Michigan. pic.twitter.com/QwyC0cI4pW
— NWS Chicago (@NWSChicago) January 25, 2021
Up to a foot of #snow has already fallen in Nebraska.
See where this latest winter storm is headed next.https://t.co/mC1cyaGgyA pic.twitter.com/aB4uAl8yjX
— The Weather Channel (@weatherchannel) January 25, 2021
O’HARE FORECAST …
Winter Storm Warning
Lakeshore Flood Advisory
Tonight: Snow. The snow could be heavy at times. Patchy blowing snow between 7pm and 5am. Low around 29. Blustery, with an east northeast wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Tuesday: Snow. High near 31. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night: Snow likely, mainly before 9pm. Cloudy, with a low around 22. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Wednesday: A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 27. North wind 10 to 15 mph.
Wednesday Night: Partly cloudy, with a low around 10. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday: Mostly sunny, with a high near 24.
Thursday Night: Partly cloudy, with a low around 12.
Friday: Partly sunny, with a high near 30.
Friday Night: Mostly cloudy, with a low around 24.
Saturday: Snow likely before 1pm, then snow likely, possibly mixed with rain. Cloudy, with a high near 36.
Saturday Night: Rain and snow likely. Cloudy, with a low around 30.
Sunday: A chance of snow. Cloudy, with a high near 37.
Sunday Night: Mostly cloudy, with a low around 25.
Monday: Partly sunny, with a high near 33.
LAKE TEMPS …
SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
903 AM CST Mon Jan 25 2021
LAKE MICHIGAN WATER TEMPERATURES…
CHICAGO SHORE……….38.
CHICAGO CRIB……….36.
MICHIGAN CITY……….34.
&&
M IS FOR MISSING DATA THAT IS NORMALLY AVAILABLE.
THE MICHIGAN CITY WATER TEMPERATURE SENSOR IS LOCATED AT A WATER INTAKE ONE MILE OFFSHORE AND 60 FEET BELOW WATER SURFACE. IT IS READ EVERY DAY OF THE YEAR.
january.chicagoweatherstation.com
Chicago Weather Forecast for your MAC/PC/TABLET includes surrounding suburbs.
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