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Winter Storm Malcolm, a large and powerful low pressure system in the Central U.S., will bring heavy snow and high winds as winter storm and blizzard warnings are in effect for portions of the Upper Midwest and mid-Mississippi Valley. There are also elevated fire weather threats in the south-central Plains and a critical fire weather threat in southern California. Active Advisories: North Dakota, South Dakota, Nebraska, Kansas, Minnesota, Iowa, Missouri, Wisconsin, Illinois, Kentucky, Tennessee, New York, Vermont, New Hampshire, Maine

• 1 inch additional snow
• 40mph wind gusts
• Until noon CST today

• 2 inches additional snow
• 60mph wind gusts
• Until 6 PM CST Friday

• 2-6 inches of snow
• 60mph wind gusts
• Until 6 PM Friday

• 1 inch of snow
• 55mph wind gusts
• Until 6 PM CST Friday

• 1-3 inches of snow
• 50mph wind gusts
• Until 6 PM CST this evening

• 2-4 inches of snow
• Until 6 PM CST this evening.

• 3-5 inches of snow
• 50mph wind gusts
• Until 6 PM CST this evening

• 1-3 inches additional snow
• Until 6 PM CST this evening

• 1-3 inches of snow
• 50mph wind gusts
• Until 6 PM CST this evening

• 1 inch additional snow
• Until 6 PM CST this evening

• 1-3 inches of snow
• 40mph wind gusts
• Until 9 PM CST this evening

• 1-2 inches of snow
• From 9 PM EST /8 PM CST/ this evening to 1 PM EST /noon CST/ Saturday

• 1-2 inches of snow
• From 9 PM this evening to noon CST Saturday

• 6-8 inches of snow
• 35mph wind gusts
• From 1 AM Saturday to 4 PM EST Sunday.

• 6-8 inches of snow 
• 35mph wind gusts
• From 1 AM Saturday to 4 PM EST Sunday

• 1-3 inches of valley snow
• 3-6 inches above 1000ft
• 8 inches above 2000ft
• From midnight tonight to 1 PM EST Saturday

• 6-8 inches of snow
• 1/3 inch of sleet
• From Saturday morning through Sunday morning

Damaging high winds will continue across a broad swath of the Plains as Winter Storm Malcolm shifts into the Upper Mississippi Valley. Heavy snow will develop across the Upper Midwest, and a wintry mix will spread across the North and Central Plains to the Ohio and Tennessee Valleys. Gusty winds will produce critical fire weather threats in southern California and Kansas. Active Advisories: Idaho, North Dakota, South Dakota, Nebraska, Minnesota, Iowa, Missouri, Wisconsin, Illinois

The heavy rain and high elevation snow will subside over the Pacific Northwest, however the potential for river flooding and landslides remain. The precipitation will move into the Northern Rockies, in addition to strong winds that may impact that region into the Northern and Central Plains into Friday. Expect hazardous travel, possible power outages, and property damage. As this weather event moves eastward across the US, there is an increasing signal for a late week winter weather event as the area of low pressure deepens and stalls itself out over the Upper Midwest. Active Advisories: Idaho, New York

• 2-7in inches of snow
• Glaze of Ice
• 55mph wind gusts
• Until 5 PM MST this afternoon.

• 2/100th inch of ice accumulation
• Until 10 AM EST this morning

An atmospheric river event will impact the western portions of the Pacific Northwest over the next couple of days bringing heavy, persistent rain and heavy mountain snow. Flooding, flash flooding, landslides, and debris flows are possible. A high wind event will spread across the Northern Rockies into the Northern Plains through Thursday. Active Advisories: Washington, Idaho, Montana, Michigan

• 10 inches additional snow
• Until 4 PM PST this afternoon

• 7-12 inches additional moutnain snow
• 3-7 inches additional snow below 4000ft
• From 5 AM early this morning to 11 PM MST this evening

• 3-6 inches of additional snow
• Light glaze of ice
• From 2 AM to 2 PM MST Tuesday

• Glazing accumulation
• Through noon EST today

Accumulating snow will continue in the Lower Mississippi Valley into midday. A plume of deep Pacific moisture will impact the Pacific Northwest into midweek, causing multiple rounds of heavy rain along the coast and in lower elevations and high elevation snow. The rain may result in flooding, especially in and around recent burn scar areas as debris flows and mudslides will be possible. Active Advisories: Washington, Oregon, Idaho, Oklahoma, Texas, Arkansas, Louisiana, Mississippi, Alabama

• 8-16 inches of mountain snow
• 5-10 inches of valley snow
• From 1 PM this afternoon to 4 PM PST Tuesday

• 3-6 inches of snow
• 12+ inches of snow above 5000ft
• From 5 AM MST /4 AM PST/ to 11 PM MST /10 PM PST/Tuesday

• 3-6 inches of snow
• 12+ inches of snow above 5000ft
• From 5 AM MST /4 AM PST/ to 11 PM MST /10 PM PST/Tuesday

• Slick and icy roads
• Until 10 AM CST this morning

• 3+ inches of additional snow
• Light glaze of ice
• Until 8 AM CST Monday

• 1 inch additional snow
• Into the morning hours

• 2-4 inches of snow
• Through midday today

• 2-4 inches of snow
• Light glaze of ice
• Through midday today

• 1-2 inches additional snow
• Until noon CST today

A weather system off the Southeast coast will move northward along the coast. Heavy snow will continue in the southern Appalachians with a wintry mix possible into portions of the Mid-Atlantic, and rain elsewhere. A Pacific system will bring rain on soggy ground that could cause landslides, mountain snow, gusty winds, and dangerous surf conditions. Active Advisories: Oregon, California, Montana, New Mexico, Texas, Indiana, Kentucky, Tennessee, Virginia, North Carolina, Georgia, South Carolina

• 5-8 inches of snow
• 40mph wind gusts
• Through 10 AM PST this morning

• 4-6 inches of snow
• 45mph wind gusts
• Through 10 AM PST this morning

• 1-4 inches of snow
• Until 11 AM MST this morning

• 4-7 inches of snow
• From Saturday afternoon through Sunday afternoon

• 4-8 inches of snow
• From Saturday evening through Sunday afternoon

• 1-1.5 inches of snow
• Until 8 AM EST /7 AM CST/ this morning

• 1-2 inches of snow
• From 1 AM to 4 PM EST Friday

• 1 inch of snow
• Until 4 PM EST this afternoon

• 3-5 inches of snow
• Through afternoon today

• 3-6 inches of snow
• Until midnight EST tonight

• 1-3 inches of snow
• Until to 7 PM EST this evening

• 2-4 inches of snow
• Until midnight EST tonight

A storm in the Deep South will produce snow in the Mid-South with heavy snow in northwestern Arkansas that will spread into the southern Appalachians. Thunderstorms could be severe along the central Gulf Coast with potential for brief tornadoes. Snow spreads from the Northwest into the Plains, while a new storm approaches the West. Enhanced threat for landslides continues in the West. Active Advisories: Oregon, California, Missouri, Arkansas, Virginia, North Carolina, Georgia

• 4-8 inches of snow
• 40mph wind gusts
• From 10 PM this evening to 10 AM PST Friday

• 5 inches of snow
• 40mph wind gusts
• From 7 PM Thursday to 10 AM PST Friday

• Up to 2 inches additional snow
• Until 3 PM

• 3-6 inches additional snow
• This morning into midday

• 3-6 inches of snow
•  From midnight tonight to midnight EST Friday night

• 4-8 inches of snow
• Light glaze of ice
• From 7 PM this evening to midnight EST Friday night

• 2-4 inches of snow
• From 7 PM EST this evening to 7 PM EST Friday

The active western pattern will bring additional rain on saturated soils that could cause flooding and brings an enhanced threat of landslides, especially, in western Washington. Other hazards include mountain snow, gusty winds, and high surf. Wintry conditions are possible in the North and Central Plains with showers, locally heavy, and thunderstorms, some strong, in the South. Active Advisories: Washington, Oregon, Idaho, South Dakota, Nebraska, Iowa, Missouri, Arkansas

Powerful storms continue to bring heavy rain, heavy mountain snow, high winds, and dangerous surf for much of the western states. A system in the Plains will bring mountain snow and a wintry mix into the Plains with rain in the South Plains. Lingering snow will continue along the western Appalachians. Active Advisories: Washington, Oregon, Idaho, Utah, Montana, Wyoming, Michigan, North Carolina

A strong storm will bring high winds, feet of mountain snow, and heavy rain and flooding across northern California and the Northwest. Localized landslides may occur on recent burn scars in western Washington, and rivers may rise to minor and isolated moderate river levels. A light wintry mix or snow will continue in parts of the Mid-Atlantic and Northeast. Active Advisories: Washington, Oregon, California, Idaho, Montana, Wyoming, Utah

• 5-15 inches additional snow
• 40mph wind gusts
• Until midnight PST tonight

• 5-10 inches of snow
• 40mph wind gusts
• From 7 AM Monday to midnight PST Monday night

• 4-7 inches of snow below 5500ft
• 12-18+ inches of snow expected above 5500ft
• 50-70mph wind gusts
• Through 4 AM Tuesday.

• 6-12 inches of snow
• 45mph wind gusts
• From 9 AM this morning to 5 AM MST Tuesday

• 4-7 inches of additional snow
• From 11 AM this morning to 7 PM MST this evening

• 6-12 inches of snow
• From 3 PM this afternoon to 3 PM MST Tuesday

• 5-10 inches of snow
• From 11 PM this evening to noon MST Tuesday