312 articles
Warn-on-Forecast
Warn-on-Forecast is a NOAA research program, begun at the National Severe Storms Laboratory in 2009, that forecasts tornadoes, hail, wind, and flash flooding from individual thunderstorms up to 6 hours ahead.
Waterspout
A waterspout is a whirling column of air and water mist over a body of water, coming in two types: tornadic waterspouts and more common fair weather waterspouts.
Weather of 2025
The weather of 2025 was the second or third warmest year on record at about 1.44 °C above pre-industrial averages, and the warmest without an El Niño.
Weather of 2026
The weather of 2026 was shaped by a strong El Niño and record global heat, bringing a record-quiet Atlantic hurricane season and a record March heat wave in the western United States.
Wildfires in 2026
The 2026 wildfire year saw record-low global fire emissions while Europe, western North America, and Chile suffered extreme seasons, with the EU burning nearly twice its 20-year average.
Winter storm
A winter storm, also called a snow storm, is an atmospheric disturbance producing dangerous snow, ice, blowing snow, and wind chills, including snowstorms, blizzards, and ice storms.
Winter Storm Elliott
Winter Storm Elliott was a historic December 2022 winter storm and Arctic outbreak that brought blizzard conditions, record cold, and widespread power outages to the United States and eastern Canada.
Winter storm warning
A winter storm warning is an alert issued by the National Weather Service when a winter storm is producing or forecast to produce heavy snow or significant ice.
Winter weather advisory
A winter weather advisory is a National Weather Service alert for snow, sleet, or freezing rain that warrants caution but falls below winter storm warning criteria.
Wireless Emergency Alerts
Wireless Emergency Alerts (WEA) are short emergency messages that US authorities broadcast to mobile phones in a targeted area, administered by FEMA and delivered over commercial mobile networks.
Woolsey Fire
The Woolsey Fire, also called the Woolsey wildfire, burned 96,949 acres in Los Angeles and Ventura counties, California, in November 2018, destroying 1,643 structures and killing three civilians.
Yarnell Hill Fire
The Yarnell Hill Fire was a lightning-caused 2013 wildfire near Yarnell, Arizona, whose wind-driven flames killed 19 of 20 Granite Mountain Hotshots on June 30.