Gusty Winds, Dropping Temperatures to 32°F by 3PM Saturday, 3°F by 4AM Sunday

Snow and sleet depth at 4:41 a.m. Saturday January 18, 2020
Snow and sleet depth at 4:41 a.m. Saturday January 18, 2020.

The main system of falling precipitation of all types has left the area to the east. The forecast calls for slight precipitation in the form of rain until about 1:00 p.m. Snow flurries will be in the mix from about 10:00 a.m. until 3:00 p.m. Freezing drizzle and rain, which began about 10:45 p.m. Friday, has ended with minor glazing of shrubs, trees and vehicles. In Arlington Heights, least 3.5 inches of snow was measured Saturday morning about 4:41 a.m., after settling was enhanced by light rain and sleet overnight. Yesterday’s snow was moderately light, but this morning the snow cover is heavy with high water content.

The updated forecast high temperature is 36°F, a couple degrees colder than yesterday’s forecast for today. Temperatures will drop below 32°F by 3PM, and Sunday’s low in the morning is forecast at 3°F from 4:00 a.m. to 6:00 a.m. That’s a degree colder than yesterday’s low forecast for Sunday.

The big concern Saturday will be wind gusts from the west that will increase at about 9:00 a.m. Gusts of 21 MPH will increase and peak at 43 MPH about 2:00 p.m. Winds will maintain gusts over 30 MPH until about 2:00 a.m. Sunday. Some power outages are likely has brittle ice-covered branches affect power lines. The other concern is unremoved snow on sidewalks, driveways, and roadways, where slush and ice/sleet-covered snow will turn into hard ice Saturday afternoon.

Weather Radar (also nexrad.chgowx.com) at 8:25 a.m. Saturday shows slight precipitation moving southwest to northeast. Most of the precipitation in northeast Illinois is rain, but some snow shows on radar in far north Winnebago County and far north McHenry County, north into parts Wisconsin.




 O’HARE FORECAST … 

Today: Rain and snow showers before 2pm, then a slight chance of snow showers between 2pm and 4pm. Areas of fog before 10am. Temperature rising to near 36 by 10am, then falling to around 23 during the remainder of the day. Breezy, with a south wind 15 to 20 mph becoming west 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

Tonight: Mostly cloudy, with a low around 3. Wind chill values as low as -18. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph.

Sunday: Mostly cloudy, with a high near 15. Wind chill values as low as -18. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

Sunday Night: Mostly cloudy, with a low around 11. Wind chill values as low as -1. Northwest wind 5 to 10 mph.

M.L.King Day: Mostly cloudy, with a high near 23. Northwest wind around 5 mph.

Monday Night: Partly cloudy, with a low around 9.

Tuesday: Sunny, with a high near 25.

Tuesday Night: Partly cloudy, with a low around 17.

Wednesday: Mostly cloudy, with a high near 35.

Wednesday Night: A slight chance of snow after midnight. Cloudy, with a low around 28.

Thursday: A slight chance of rain and snow. Cloudy, with a high near 39.

Thursday Night: A chance of rain and snow. Cloudy, with a low around 32.

Friday: A chance of rain and snow. Cloudy, with a high near 41.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
913 AM CST Fri Jan 17 2020

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE……….35

CHICAGO CRIB……….31

MICHIGAN CITY……….36

&&

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

Arlingtoncardinal.com/radar

Chicago Weather Forecast for your MAC/PC/TABLET includes surrounding suburbs.

Snow and sleet depth at 4:41 a.m. Saturday January 18, 2020
Snow and sleet depth at 4:41 a.m. Saturday January 18, 2020.
Possible early snow depth marked before collapse on tree trunk about 4:47 a.m. Saturday January 18, 2020
Possible early snow depth of 4.5-5 inches marked before collapse of snow on tree trunk about 4:47 a.m. Saturday January 18, 2020.

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The Winter Weather Advisory ended at 6:00 a.m.

URGENT – WINTER WEATHER MESSAGE
National Weather Service Chicago IL
348 AM CST Sat Jan 18 2020

ILZ006-012>014-181200-
/O.CON.KLOT.WW.Y.0004.000000T0000Z-200118T1200Z/
Lake IL-Kane-DuPage-Cook-
Including the cities of Waukegan, Buffalo Grove, North Chicago,
Highland Park, Mundelein, Gurnee, Round Lake Beach, Aurora,
Elgin, Naperville, Wheaton, Downers Grove, Elmhurst, Lombard,
Carol Stream, Addison, Chicago, Humboldt Park, Hyde Park,
Lakeview, Lincoln Park, Logan Square, and Navy Pier
348 AM CST Sat Jan 18 2020

…WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY
THIS MORNING…

* WHAT…Freezing rain will change to rain early this morning as
temperatures rise above freezing.

* WHERE…Lake IL, Cook, Kane and DuPage Counties.

* WHEN…Until 6 AM CST Saturday.

* IMPACTS…Plan on slippery road conditions early this morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Slow down and use caution while traveling.

The latest road conditions for Illinois can be obtained on the
internet at www.gettingaroundillinois.com.