WINTER STORM WARNING: Snow Starts about 9 AM with Thunder Possible Between Noon and 5 PM, 6.4 Inches

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Chicagoland weather radar [LIVE PRECIPITATION TYPE RADAR] shows that the first snow band stretches from about Dixon, Illinois to Danville, Illinois and is heading northeast.

Snow is expected to begin about 9:00 a.m. Monday with heavy snow during the day — especially between noon and 5:00 p.m. with thunder may be heard during the snow storm. Locally 10 inches are possible in thundersnow areas. Snow is forecast to diminish about 6:00 p.m. with flurries continuing until about 8:00 p.m. Total accumulation forecast for Arlington Heights: 6.4 inches.

A little heavier snow forecast south — Joliet about 7.0 inches. South of Joliet? Less snow — more of a Wintry Mix.

Satellite infrared images show cloud cover over most of the Midwest.

TODAY Sunrise: 6:45 AM Sunset: 5:27 PM
URGENT – WINTER WEATHER MESSAGE…CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
353 AM CST MON FEB 17 2014

…PERIOD OF VERY HEAVY SNOW TO RESULT IN EXTREMELY DIFFICULT
TRAVEL CONDITIONS THIS AFTERNOON…

LAKE IL-DUPAGE-COOK-WILL-KANKAKEE-IROQUOIS-LAKE IN-PORTER-NEWTON-
JASPER-BENTON-
INCLUDING THE CITIES OF…WAUKEGAN…WHEATON…CHICAGO…JOLIET…
KANKAKEE…WATSEKA…GARY…VALPARAISO…MOROCCO…RENSSELAER…
FOWLER
353 AM CST MON FEB 17 2014 /453 AM EST MON FEB 17 2014/

…WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM CST /10 AM
EST/ THIS MORNING TO 9 PM CST /10 PM EST/ THIS EVENING…

* TIMING…SNOW WILL DEVELOP BY MID MORNING AND TAPER OFF LATE
THIS EVENING.

* ACCUMULATION…4 TO 8 INCHES WITH ISOLATED AMOUNTS NEAR 10
INCHES.

* PRIMARY IMPACT…SNOW WILL OCCASIONALLY FALL VERY HEAVILY…WITH
SNOWFALL RATES IN SOME AREAS POSSIBLY REACHING A CRIPPLING TWO
TO THREE INCHES PER HOUR FOR A TIME THIS AFTERNOON. THIS WILL
CAUSE ROADS TO BE SNOW COVERED AND TRAVEL EXTREMELY DIFFICULT
WITH VISIBILITY REDUCED TO ZERO AT TIMES. UNNECESSARY TRAVEL
SHOULD BE AVOIDED THIS AFTERNOON.

* OTHER IMPACT…SNOW COULD BRIEFLY MIX WITH SLEET OR FREEZING
RAIN SOUTH OF INTERSTATE 80 THIS MORNING AS PRECIPITATION
BEGINS. ALSO…THERE IS A CHANCE FOR THUNDER WITHIN THE HEAVIER
BANDS OF SNOW THIS AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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.

Snow outlook from the National Weather Service Office Chicago.

7-DAY FORECAST

Washington’s Birthday (TODAY)
Snow, mainly after 9am. The snow could be heavy at times. Some thunder is also possible. High near 27. Breezy, with a southeast wind 15 to 20 mph becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 4 to 8 inches possible.

Tonight
Snow likely before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 16. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday
Mostly sunny, with a high near 38. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

Tuesday Night
Partly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 30 mph.

Wednesday Mostly sunny, with a high near 36. West wind 5 to 10 mph becoming south in the afternoon.

Wednesday
Night Rain or freezing rain likely after midnight. Cloudy, with a low around 30. Chance of precipitation is 70%.

Thursday
Rain, possibly mixed with freezing rain, becoming all rain after noon. Some thunder is also possible. High near 42. Chance of precipitation is 80%.

Thursday Night
A slight chance of rain and snow showers. Partly cloudy, with a low around 22.

Friday
Mostly sunny, with a high near 32.

Friday Night
A slight chance of snow. Mostly cloudy, with a low around 20.

Saturday A chance of snow. Mostly cloudy, with a high near 29.

Saturday Night
Mostly cloudy, with a low around 9.
Sunday Partly sunny, with a high near 23.

LIVE RADAR | STORM TRACKS | CLOUDS INFRARED SAT | CLOUDS VISIBLE SAT (during daylight)

WunderMap® with Temperature/Wind Data || Google: Arlington Heights Temps | NE Illinois Temps

Full Screen Motion Weather Radar (Wunderground.com)

Midwest Cloud Cover with Arlington Heights Weather Forecast

SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with solar azimuth and trajectory, times for dawn, sunrise, solar noon, sunset, dusk …

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