Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 254 AM EDT Fri Apr 08 2022 Valid 12Z Fri Apr 08 2022 - 12Z Sun Apr 10 2022 ...Upper-level low to produce rain and snow showers from the Midwest to the Northeast this weekend; East Coast and Northwest cool down as central U.S. warms up... ...Widespread temperature records forecast to be tied or broken in California today... ...There is a Critical Risk of Fire Weather over portions of the Central/Southern Plains and Lower Mississippi Valley today... A massive, slow-moving upper-level low, responsible for unsettled weather across the eastern third of the country, will begin to weaken as it swings a few more surface waves through the region this weekend. These surface lows will produce rain/snow showers over much of the Midwest Great Lakes and Northeast today. Scattered to isolated thunderstorms are also possible over the Ohio/Tennessee Valleys beginning this afternoon. Light rain/snow showers will linger through Sunday when the upper low will have moved out. Temperatures will drop on the backside of this system, from the Midwest to Northeast, with highs likely to be 20-25 degrees below average through the weekend. Flash flooding and severe thunderstorms are not a concern this weekend. Meanwhile, another upper low will arrive over the Northwest this weekend. This system will spread heavy snow over the Cascades and peaks of the Northern Rockies while focusing light rain and scattered to isolated thunderstorms over the Pacific Northwest coast and inland areas as well as the lower elevations of the Northern Rockies. Temperatures are forecast to fall across the Northwest beginning tonight as the cold front sweeps through the region. An upper-level ridge responsible for above average temperatures across the West over the past few days will last one more day in the region. High temperatures are expected to be 20-25 degrees above average over much of California, Nevada and Montana today. Highs in California will be in the 90s today with many places likely to tie or break existing high and low temperature records. Kebede Graphics are available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php