Another busy weather week is in store for the nation as we track several storms that will bring rain and snow to various regions. This comes as a cold start to the week for much of the country will transition to a warmer regime mid- to late- week. We have the details on these top stories and more in your 5 Things to Watch.

More Rain for California:

More great news is ahead for California as a new storm enters the West Coast, bringing a light to moderate rain to most of the state while very-welcome mountain snow pummels the Sierra Nevada. This snowfall will definitely be important for the water supply this coming summer, a time when moisture is very limited. This rain will mainly affect the coastal areas of California on Monday, but beginning Monday night that moisture will reach the mountains, making for snow. Snow will move inland while weakening while a new storm brings a more robust rain to much of the Golden State midweek. It’s this new storm that will bring widespread rain and snow to the West, making for a messy end to the week.

ECMWF forecast precipitation type for Thursday. Credit: WeatherBELL

Northern Tier Clipper:

A fast-moving, weak low pressure from Canada will ride the polar jet stream this week, bringing a light round of snow to parts of the Northern Tier. Emerging into the US on Tuesday, some snow will be possible from northern Minnesota through the Upper Peninsula of Michigan while isolated lake-effect snow impacts parts of New York and Pennsylvania. By Wednesday, this clipper will extend some of its moisture into the interior Northeast, dropping up to a couple of inches, but the storm system will weaken even further, thus minimizing its impacts.

Cool Start; Mild End

A trough of low pressure behind this past weekend’s winter storm will usher in cooler than normal air across most of the South and East early-week. Highs will be up to 20 degrees below average in the Mid-Atlantic — the fresh snow cover is aiding in these chilly conditions too. By late-week, however, warmer air from the north and west will make for a round more-pleasant, above average temperatures across most of the Eastern US. Highs will generally be 5 to 15 degrees above average.

Snow and Ice Late-Week:

A disturbance developing over the Plains will trek toward the Northeast late-week, likely bringing a round of freezing rain, snow, and/or a wintry mix to parts of the Ohio River Valley around the Thursday time period. Then on Friday, snow will become possible across a large chunk of the Northeast, with the best chance for snow north and west of the I-95 corridor. Meanwhile in parts of the South and Southeast, a light rain will be the story, so there is no need to worry about any snow.

Weekend Storm:

Signs continue to point to the development of a major winter storm this coming weekend, affecting regions from the central Plains through the Mid-Atlantic and New England. While uncertainty still exists, this next potential storm is worth watching, which our Head Meteorologist Joshua Feldman discusses in this week’s Sunday Storm:

There is a lot of uncertainty regarding the evolution of the pattern-changing storm. It is still too early to tell where exactly the heaviest snow will fall, but heavy snow is more likely to impact the Northeast than the most recent cross-country winter storm. Regardless of impacts from the weekend storm, cold air will invade the Eastern US on or about January 20, and it appears like it will stick around for a while.


Jackson is Head of Content and Social Media at WeatherOptics. He is currently a student at the University of Miami, studying Meteorology and Broadcast Journalism. Dill produces forecast articles for the website and helps to manage the content schedule. He has also led the growth of WeatherOptics’ social media accounts, working to keep them aligned with the company’s evolving vision.

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