Featured Map
Watches and Warnings
Watches & Warnings
WSI's Watches & Warnings Map displays current National Weather Service Watches, Warnings and Advisories via County Fill colors on a national or regional level. Watch/Warnings include Thunderstorm, Tornado, Flash Flood, Flood, Winter Storm and High Wind. Data are updated hourly to display valid criteria and remove expired criteria.

Related Weather Maps
View the Current Surface Analysis »
View the National Infrared Satellite »
View the Current Traffic Report »
View the RAINcast Map »
Lightning Strikes
Lightning Strikes Map
View the Lightning Strikes Map
The National Lightning map shows where cloud-to-ground lightning strikes have occurred in the last hour.
National Weather Service Alerts
Weather Alerts
View the Weather Alerts
Current National Advisory Board Watches and Warnings by type and state throughout the United States. Select a state to view its available Watches and Warning Alerts.
Severe Outlook Today
Severe Outlook Today
View the Severe Outlook Today
WSI's Severe Outlook Map displays current National Weather Service Watches, Warnings and Advisories via County Fill colors both nationally and regionally.
Storms
Storm A storm is any disturbed state of an astronomical body's atmosphere, especially affecting its surface, and strongly implying severe weather. It may be marked by strong wind, thunder and lightning (a thunderstorm), heavy precipitation, such as ice (ice storm), or wind transporting some substance through the atmosphere (as in a dust storm, snowstorm, hailstorm, etc).

Storms are created when a center of low pressure develops, with a system of high pressure surrounding it. This combination of opposing forces can create winds and result in the formation of storm clouds, such as the cumulonimbus. Small, localized areas of low pressure can form from hot air rising off hot ground, resulting in smaller disturbances such as dust devils and whirlwinds.
View Detailed Information »
Additional Hurricane Maps
1Km Storm Watch
1Km Storm Watch
The 1Km map allows you to view 1 kilometer (km) resolution radar imagery both nationally and regionally.
Metro Storm Watch
Metro Storm Watch
The Metro map allows you to view 1 kilometer (km) resolution radar imagery both nationally and regionally.
Severe Outlook Tomorrow
Severe Outlook Tomorrow
WSI's Severe Outlook Forecast Map displaying projected National Weather Service Watches, Warnings and Advisories.
THUNDERcast
THUNDERcast
The THUNDERcast map shows areas of probability for regional or national thunderstorms for the current day.
Water Vapor
Water Vapor
The Water Vapor map shows areas of moist and dry air at mid-levels of the atmosphere (about 12,000 feet).
Advertisements
At Last! Intellicast now available for iPhone and Android