National weather forecast for October 21
Fox News senior meteorologist Janice Dean has your FoxCast.
A cold front stretching from the Great Lakes to the Gulf Coast will bring showers and storms, as well as even colder air behind it.
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Isolated severe storms will be possible from the Lower Great Lakes through the Southeast.
![24-Hour temperature change](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2021/10/1200/675/068048e2-24-Hour-Temperature-Change.png?ve=1&tl=1)
24-Hour temperature change (Credit: Fox News)
Ahead of the front, much warmer air will be swept away through Friday, with a temperature drop in some areas of 10 to 15 degrees.
![East Coast forecast temperatures](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2021/10/1200/675/East-Coast-Forecast-Temperatures.png?ve=1&tl=1)
East Coast forecast temperatures (Credit: Fox News)
Meanwhile, the West is gearing up for quite a parade of storms.
![West Coast forecast precipitation](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2021/10/1200/675/West-Coast-Forecast-Precipitation.png?ve=1&tl=1)
West Coast forecast precipitation (Credit: Fox News)
The latest system will bring heavier rain and intense mountain snow Thursday.
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Some spots will receive upward of 2 feet while debris flows, flash flooding and mudslides will be a big hazard especially for the burn areas across California.