National Weather Service United States Department of Commerce

Atmospheric River Event on the West Coast; 4th Nor'easter on the East Coast

Very heavy rainfall event is developing in California, especially, Southern California over the next few days. Several inches of rain may lead to flash flooding, including mud and debris flows from burn scar areas. Several feet up to 5 feet is expected in the mountains. On the east coast, the 4th Nor'easter in 3 weeks will bring another round of heavy snow, gusty winds, and coastal flooding. Read More >

In most years, thunderstorms, tornadoes and lightning caused hundreds of injuries and deaths and billions in property and crop damages.  To obtain critical weather information, the National Weather Service (NWS) established SKYWARN® with partner organizations. SKYWARN® is a volunteer program with between 350,000 and 400,000 trained severe weather spotters. These volunteers help keep their local communities safe by providing timely and accurate reports of severe weather to the National Weather Service.

Although SKYWARN® spotters provide essential information for all types of weather hazards, the main responsibility of a SKYWARN® spotter is to identify and describe severe local storms. In an average year, the the United States experiences more than 10,000 severe thunderstorms, 5,000 floods and more than 1,000 tornadoes.

Since the program started in the 1970s, the information provided by SKYWARN® spotters, coupled with Doppler radar technology, improved satellite and other data, has enabled NWS to issue more timely and accurate warnings for tornadoes, severe thunderstorms and flash floods. SKYWARN® storm spotters are citizens who form the nation's first line of defense against severe weather. There can be no finer reward than to know that their efforts have given communities the precious gift of time--seconds and minutes that can help save lives.

Who is Eligible and How do I get started?

NWS encourages anyone with an interest in public service to join the SKYWARN® program. Volunteers include police and fire personnel, dispatchers, EMS workers, public utility workers and other concerned private citizens. Individuals affiliated with hospitals, schools, churches and nursing homes or who have a responsibility for protecting others are also encouraged to become a spotter. Ready to learn more? Find a class in your area. Training is free and typically lasts about 2 hours. You'll learn:

  • Basics of thunderstorm development
  • Fundamentals of storm structure
  • Identifying potential severe weather features
  • Information to report
  • How to report information
  • Basic severe weather safety

SKYWARN® is a registered trademark of NOAA's National Weather Service.  Please read the rules for the usage of the SKYWARN® name and logo.