With the McHenry County going through a strong storm, keep checking nwherald.com for updates on weather conditions.
11 p.m. update - About 400 customers were without electricity, according to ComEd's online power outage map.
9:50 p.m. update - The severe thunderstorm warning has expired, but a flood advisory is in place until 1:30 a.m. Tuesday.
Combined with the rain from earlier in the day and wet conditions from earlier in the week, minor flooding could occur, the National Weather Service said.
9:20 p.m. update - According to ComEd's online outage map, a little more than 200 customers across the county are without power.
9 p.m. update - A severe thunderstorm warning has been issued for McHenry County.
The warning will be effect until 9:30 p.m.
The line of storms was located at 8:47 p.m. extending from Sharon to Hillcrest to 5 miles east of Walnut moving east at 45 mph, the weather service said.
Wind gusts of 60 mph and quarter-sized hail are expected to be part of this line of storms.
Severe thunderstorms are expected to be near Harvard at 9 p.m., Marengo at 9:05 p.m., Hebron at 9:10 p.m., Richmond and Woodstock at 9:15 p.m., Spring Grove at 9:20 p.m. and Prairie Grove at 9:25 p.m.
People are advised to move to an interior room on the lowest floor of a building.
8 p.m. update - The National Weather Service cancelled the severe thunderstorm watch for the county about 7:15 p.m. after the line of thunderstorms moved through the county and into Cook County and into northwest Indiana.
Another line of thunderstorms, however is expected to come into the western part of McHenry County about 9 p.m. and move through by 10:30 p.m, said Meteorologist Jamie Enderlen.
7:30 p.m. update - The Huntley Fire Protection District at 6:20 p.m. responded to 731 Tuscany Drive in Algonquin after an apparent bolt of lightning struck the house, said Lt. Ken Madziarek.
The lightning strike hit the peak of the roof of the two-story house, and blew out some of the interior walls of the closet in a bedroom, Madziarek said.
A small hole was left in the exterior of the house.
Firefighters on scene reported there was a light haze of electrical odor, but no fire was found, Madziarek said. No one was hurt.
"The family got out safe immediately," Madziarek said.
The lightning strike left less than $5,000 in damage, but the house is habitable, Madziarek said.
6:25 p.m. update - Metra trains on the Union Pacific Northwest Line are running 10 to 30 minutes behind schedule because of the weather conditions, according to the Metra website.
According to the Metra Union Pacific Twitter page, outbound trains are stopping at Crystal Lake.
A severe thunderstorm watch and a flash flood watch are in effect for McHenry County, the National Weather Service said.
Storms are expected to hit the area later tonight and may produce wind gusts of 70 mph to 90 mph and possibly a tornado.
There also could be hail up to two inches in diameter, torrential rainfall, localized flooding and cloud to ground lightning, the weather service said.
The severe thunderstorm watch is in effect until 9 p.m. The flash flood watch is in effect until 4 a.m. Tuesday.
The line of storms is moving east from Iowa and expected to arrive over northern Illinois around 5:30 p.m. and continue to push toward northwest Indiana by 7 p.m.
The storms may produce 2 to 3 inches of rain, which combined with the rain that came down Monday morning, may lead to flash flooding, the weather service said.
- Northwest Herald