Anticipated ‘flash freeze’ prompts McHenry County school districts to cancel after-school activities Thursday

Several McHenry County school districts canceled afternoon and evening events Thursday because of anticipated icy conditions.

Meteorologists with the National Weather Service predicted temperatures across the Chicago suburbs to drop 40 degrees between Thursday afternoon and evening, creating a potential “flash freeze” around the evening rush hour.

Temperatures dropped, but not quite the forecasted 40 degrees during the time frame that was predicted. It was in the mid-20s at 9 p.m. in Crystal Lake.

Friday is expected to be mostly sunny with a high near 20 and the wind chill dipping as low as 1 degree.

Crystal Lake-based District 155 canceled all Thursday activities to “avoid hazardous driving conditions,” according to its Twitter account.

Woodstock School District 200 canceled all after-school activities, including the eighth-grade freshmen orientation meetings for incoming freshmen at both high schools. The orientations have been rescheduled to take place Tuesday, according to a news release from the district.

In Huntley School District 158, athletic events were canceled, but practices at Huntley High School, Heineman Middle School and Marlowe Middle School took place as scheduled, according to the district’s Twitter account.

Algonquin-based School District 300 also canceled all Thursday activities, according to a message from Superintendent Fred Heid. After-school care such as Circle of Friends, the Park District and Boys and Girls Club were not impacted.

Harvard Community School District 50 tweeted just after noon that all building activities and practices would end by 4:30 p.m. in anticipation of the inclement weather.

Richmond-Burton Community High School District 157 and Johnsburg School District 12 also announced after-school activity cancellations.