Triple-threat megastorm set to hit US with snow, high winds and tornado risk
Mar 15th 2026
A powerful system combining heavy snow, damaging winds and severe thunderstorms will move from the Upper Midwest to the East Coast through Monday, threatening travel, power and flooding across a wide swath of the United States.
- Nearly 200 million people are in the path of what AccuWeather called a triple-threat March megastorm combining snow, high winds and severe thunderstorms.
- A bomb cyclone dropped heavy snow across the Upper Midwest with more than 20 inches reported in parts of Minnesota and Wisconsin and caused hundreds of flight cancellations at Minneapolis-Saint Paul.
- More than 210,000 utility customers in six Great Lakes states lost power as gusts reached about 85 mph in places and blizzard warnings remained in effect.
- A line of severe storms will sweep east on Monday across the Mississippi, Tennessee and Ohio valleys into the Appalachians and the East Coast.
- Mid-Atlantic areas including Washington DC, Baltimore, Richmond and Raleigh face a heightened risk of damaging straight-line winds and isolated tornadoes, according to forecasters.
- Coastal New York and southern New England could see brief intense downpours that produce urban flooding, and high winds have driven large wildfires in Nebraska that prompted National Guard deployments and evacuations.
Articles
- ‘Triple-threat megastorm’ to scatter snow, high winds and thunder across US www.theguardian.com
- Hawaii faces flash flooding, blizzard conditions and landslides with more rain to come www.theguardian.com
- Weather tracker: heavy snowfall and freezing rain sweep across US and Canada www.theguardian.com
- ‘Dangerously hot conditions’: millions in US west prepare for extreme heatwave www.theguardian.com