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Significant weather advisory (SPS; alt.: significant weather alert) – A strong thunderstorm below severe criteria, containing small hail below 1 inch (2.5 cm) diameter, and/or strong winds of 39–57 miles per hour (63–92 km/h), is indicated by Doppler weather radar and may create some adverse impacts on travel.
A severe thunderstorm warning indicates the warned area is in impending danger from hail or wind speeds meeting warning criteria as well as from lightning and hydrological impacts associated with the storm cell. Severe thunderstorms can and do produce tornadoes without warning. [2] While not all severe thunderstorms produce tornadoes, they can ...
Tornado warning. A tornado warning ( SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a thunderstorm capable of producing one, and advises individuals in that area to take cover. Modern weather surveillance technology such as Doppler weather radar can detect ...
When severe weather looms, storm alerts are important tools for keeping people informed. The National Weather Service shares alerts as it warns of potential risks from thunderstorms, flooding ...
In Canada, governmental weather warnings and watches are issued by the Environment Canada. Environment Canada defines an advisory as "an alert to cover a wide array of deteriorating weather conditions," a watch as "when conditions favour that severe weather forming" and a warning as "severe weather is actually occurring or is imminent ...
People will receive information alerting them of events including severe flooding, fires or extreme weather. Skip to main content. News. 24/7 help. For premium support please call: 800-290 ...
Severe weather season is about to shift into high gear as a volatile weather pattern fuels repeated rounds of damaging thunderstorms and tornadoes across more than a dozen states through May ...
Emergency Broadcast System, Local Access Alert. The Emergency Alert System ( EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite and broadcast television and both AM, FM and satellite radio.
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