Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 525 PM EST Sat Nov 07 2020 Valid 00Z Sun Nov 08 2020 - 00Z Tue Nov 10 2020 ...Heavy snow to develop over parts of the Sierra and Rocky Mountains, as well as the Northern Plains... ...Heavy rainfall and strong winds to impact southern Florida as Tropical Storm Eta approaches... ...Record or near record warmth continues over the Midwest and Northeast/Mid-Atlantic; record cold expected across California and Great Basin... A strong storm will produce heavy snow across the West as it moves across Montana overnight through Sunday. Snow totals of up to a foot are possible over the Sierra Mountains, with much higher values (around 2 feet) expected over the Northern Rockies and Northern Plains. Ice impacts are expected to be marginal with this system. Northerly wind increasing to 20 to 30 mph with higher gusts on Sunday will result in considerable blowing and drifting snow, with blizzard conditions reducing visibilities to less than a quarter mile at times. Travel conditions will quickly deteriorate and remain treacherous into Monday. A cold air mass will filter into the West behind the storm as high pressure settles over the Pacific Northwest. Temperatures will be cold enough through Monday to possibly break records, especially across California and the Great Basin, where highs between 20 and 30 degrees below average are expected. Cold air will also descend over the Northern Rockies, with highs between 20 and 30 degrees below average Sunday. Meanwhile, deep moisture will stream northward ahead of Tropical Storm Eta. Winds, thunderstorm activity and rainfall rates should pick up across the Florida peninsula as Eta approaches Cuba. The heaviest rainfall is likely to occur on Sunday as Eta crosses into the Northern Caribbean. There is a Slight Risk of Excessive Rainfall leading to flash Flooding over southern Florida as a result of the rain associated with Eta. Record warmth is expected from the Midwest to the Northeast and Mid-Atlantic through Monday, as high pressure over the Mid-Atlantic will stream warm air northward over the area. Finally, an elevated fire risk area is in place over the Central High Plains as winds pick up ahead of the western U.S.storm. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php