SEVERE THUNDERSTORM WARNING from Barrington Hills to Buffalo Grove, Arlington Heights to Chicago's North Side

A thin, but strong line of thunderstorms is moving from west to east, and is expected between 1:30 p.m. and 3:00 p.m. in the northwest suburbs of Chicago. Severe Thunderstorm Warnings have already been issued in all of Lake County and southeast McHenry. Frequent cloud-to-ground lightning and severe damaging winds are possible with the thunderstorms.

A SEVERE THUNDERSTORM WARNING was issued at 1:41 p.m. Thunder is already rumbling north and west of Arlington Heights at 1:30 p.m. The radar image heading toward Arlington Heights has strengthen since the SEVERE THUNDERSTORM WATCH was issued about 30 minutes ago.

The National Weather Service reported at 1:03 p.m. that the office received reports of quarter to golf ball size hail with this storm when it was in northwestern McHenry County.

Weather Radar) shows strong thunderstorms in a line from Central Michigan to Western Illinois just passing the McHenry, Kane, Lake, and Cook County corners approaching northwest Cook County.

A severe thunderstorm watch has been issued for parts of Illinois and Indiana until 9 PM CDT pic.twitter.com/PXId52W2Ay A broken line of strong/severe thunderstorms is developing along a cold front as it works its way into northern Illinois. Damaging winds will be the primary threat for our area this afternoon, but large hail may also occur in some spots through the mid-afternoon. #ilwx #inwx pic.twitter.com/w1BSHZ64gT Here's how the radar may look throughout the day as gusty thunderstorms move through the area. All storms may produce winds strong enough to down tree limbs as well as damaging hail. Have multiple ways to get warnings! #ILwx #INwx pic.twitter.com/RADq9WPJlY

SEVERE THUNDERSTORM WATCH 489 IS IN EFFECT UNTIL 900 PM CDT

FOR THE FOLLOWING LOCATIONS — ILLINOIS COUNTIES INCLUDED ARE

This Afternoon: Periods of showers and thunderstorms, mainly between 3pm and 5pm. High near 87. Breezy, with a southwest wind around 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Isolated showers and thunderstorms before 7pm. Mostly clear, with a low around 59. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.

Wednesday: Sunny, with a high near 78. West northwest wind 10 to 15 mph, with gusts as high as 30 mph.

Wednesday Night: Mostly clear, with a low around 57. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Thursday: Sunny, with a high near 77. North wind 5 to 10 mph.

Thursday Night: Mostly clear, with a low around 57.

Friday Night: Mostly clear, with a low around 65.

Saturday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86.

Sunday: Mostly sunny, with a high near 77.

Monday: Mostly sunny, with a high near 83.

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.

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