Winter Weather Warnings, Watches and Advisories - National Weather Service
Winter Storm Warnings are issued for a significant winter weather event including snow, ice, sleet or blowing snow or a combination of these hazards. Travel will become difficult or impossible in some situations. Delay your travel plans until conditions improve. Ice Storm Warnings are usually issued for ice accumulation of around 1/4 inch or more.
Watch/Warning/Advisory Definitions - National Weather Service
A Winter Storm Warning is issued when a significant combination of hazardous winter weather is occurring or imminent. 2) Enough ice accumulation to cause damage to trees or powerlines. 3) a life threatening or damaging combination of snow and/or ice accumulation with wind.
NWS Watch, Warning, Advisory Display - NOAA/NWS Storm Prediction Center
Click on the NWS Warnings and Advisories Map above for more details. Severe weather information from the Storm Prediction Center.
Snow and Ice Forecasts & Services - National Weather Service
Most likely time of winter precipitation onset (snow, sleet, freezing rain). Rain is not included here. This information is provided when we issue a Warning or Advisory for expected snow or ice accumulation; typically six to 24 hours in advance. Times are only given for places that are under a Warning or Advisory.
Winter - National Weather Service
This website is designed to teach you how to stay safe before, during and after a winter storm. You will find information on winter alerts, science and hazards, snow coverage maps, and information describing the different types of winter storms.
The National Weather Service (NWS) National Winter Program is announcing new Winter Storm Warning (WSW) criteria for Heavy Snow, which will be used by all Contiguous United States Weather Forecast Offices (WFOs) beginning this winter season. The primary reason for changing the NWS snow criteria is to increase consistency among neighboring WFOs.
National Weather Service
Rainfall will be mostly beneficial but poses a risk for dangerous debris flows over recent burn scars. A significant winter storm will impact Alaska through the weekend with heavy snow across western Alaska and heavy rainfall across Southcentral with strong winds and marine/coastal impacts. Read More >
National Weather Service Expanded Winter Weather Terminology
Winter Storm Warning: A winter storm event (heavy sleet, heavy snow, ice storm, heavy snow and blowing snow or a combination of events) is expected to meet or exceed local winter storm warning criteria in the next 12 to 36 hours.
Winter Storm Warning criteria for US revamped by National Weather Service
Nov 11, 2023 · The National Weather Service has revamped the criteria for Winter Storm Warnings across the country, releasing a new map to serve as the basis for issuing winter storm watches and warnings across the U.S. The criteria for watches and warnings abide by thresholds of snowfall amounts.
NATIONAL WEATHER SERVICE
The alerts web service displays NWS watches, warnings, advisories, and similar products. Click the main menu down-arrow for a quick guide and documentation. Select a location option to begin your search for alerts.