Chicago started the winter season early after the city was covered with record-breaking snowfall that is earliest in 30 years.
The unexpected weather was announced by the National Weather Service Chicago in a tweet from Wednesday afternoon.
The agency revealed that Chicago received 1.2 inches of snow and that it was the first snowfall that collected more than an inch since October 20, 1989.
They also shared that the 1.2-inch snow broke a 96-year daily snowfall record that was initially set on October 30, 1923, by 0.7-inch.
The National Weather Service Chicago has announced that the city has broken a record of 30 years and had the first snowfall of the season ever
The thousands of children who plan to go trick-or-treat on Thursday evening are a major concern.
Meteorologists believe that places such as the northwestern suburbs will receive about five inches of snow in addition to early morning rain.
In response, several cities in northeastern Illinois have rescheduled or planned times for a trick or treat.
NBC 5Paul Deanno says that measurable snow has fallen on Halloween only once before.
"That was 2014, and it was only 0.1". A track dropped 6 other times. So if our prediction is true, this will be the "snowiest" Halloween in Chicago's history, "he said.
NBC 5 reporter Paul Deanno said that Halloween has seen snow only once in 2014 and this year has the potential to be the snowiest Halloween
On Tuesday, the northern suburb of Vernon Hills said they moved Halloween from Thursday to Saturday and followed the village of Winnetka.
& # 39; This decision was made at the request of residents to change the hours and in consultation with our police chief, & # 39; said the village.
& # 39; The intention is to maximize participation in Halloween parties while encouraging the safety of our youngest residents. & # 39;
Several areas in Illinois have decided to move Halloween trick-or-treat to this Saturday due to the cold weather and snow
However, some suburbs have remained steadfast in their decision to keep the Halloween night as it is.
Orland Hills Village Trustee Kyle R. Hastings said: & Halloween is recognized for Trick or Treating from (3:00 PM – 7:00 PM) on Halloween on October 31st. & # 39;
& # 39; If we change Halloween because it's too (cold) snow and snow for trick or treaters, we all have to do the same to change Christmas when it's too hot for Santa and his reindeer, and then switch between the 4th of July if it is too cold and wet for BBQ & # 39; s. & # 39;
Chicago residents were stunned on Wednesday when snow began to cover their neighborhood
On the photo: a map with parts of Illinois that are covered in the snow on Thursday and southern areas that get rain
Chicago residents are shocked by the snow as they hurry to prepare, ABC 7 reported.
& # 39; I can't believe it so early. I started to think. I haven't even set the snow blower yet. "No kicks out," said Bob Anderson of Glen Ellyn.
Resident Kristin O & # 39; Connor said: & # 39; I had no idea that this would happen. It is depressing to think that Halloween is tomorrow and that we have already had our first snow of the season. But can't mother nature control it? & # 39;
A school just outside of Chicago shows the grim weather difference between Tuesday and Wednesday (photo)
Roads became a concern after the sudden snowfall, when officials reported car accidents and the Illinois Tollway used 196 snow plows
The O&H International Airport said they had received 1.2 centimeters of snow and announced on Thursday that the weather had caused them to delay 280 flights.
A day before the snowfall, the National Weather Service stated winter weather advice at various locations, including Chicago, in Illinois.
They report that Chicago and the surrounding areas can receive between two and four centimeters of snow, while the areas directly west can get as much as five centimeters.
Countries such as McHenry, DeKalb, Kane, DuPage, Cook, LaSalle, Kendall and Grundy are under the winter weather advice until Thursday evening.
Pictured: A map of Accuweather shows parts of northeastern Illinois, including Chicago, which has Friday & # 39; heaviest snow & # 39; received
Chicago suffered from the worst conditions on Wednesday between 11 am and 4 pm, but it is expected that this weekend will stop against snow.
The National Weather Channel predicts from Thursday morning that Chicago will be mostly cloudy and wet from Friday, or until November 13.
Yet temperatures between 40s, 30s and at its lowest the upper 20s will fall.
Gusty winds that reach more than 40 km / h throughout the day keep Halloween cool.
The roads are another concern on Wednesday and on the way to Thursday.
Snowfall created slippery roads in northeastern Illinois and there have been reports of accidents.
Pictured: parts of Illinois can get up to six inches of snow, while other areas can get as little as & # 39; coating & # 39;
The Illinois Department of Transportation said it sent trucks to salt the affected areas.
The Illinois Tollway has deployed their entire department with 196 snow plows.
There was also an influx of power outages due to fallen tree branches and power lines, which were mainly found in the provinces of DuPage and Cook.
A ComEd spokesperson said that 1,700 customers were without power from Wednesday night at 5:30 pm.
Around 44,000 customers have recovered their power and 400 crews are still working in the field.
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