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The impact statement system—initially used only for tornado and severe thunderstorm warnings—was first employed by the WFOs in Wichita and Topeka, Kansas, and Springfield, St. Louis and Kansas City/Pleasant Hill, Missouri beginning with the 2012 Spring severe weather season, eventually expanded to include 33 additional National Weather ...
The National Weather Service issues a similar high wind warning (Specific Area Message Encoding code: HWW) for high winds on land. The criteria vary from place to place; however, in most cases, the warning applies to winds of 40 miles per hour (64 km/h) to 73 miles per hour (117 km/h) for at least 1 hour; or any gusts of 58 miles per hour (93 km/h) to 114 miles per hour (183 km/h) on land.
An extreme cold warning is a weather warning issued by Environment and Climate Change Canada (ECCC) and by the United States' National Weather Service (NWS) to inform the public about active or imminent severe cold temperatures in their local region. In April 2014, ECCC replaced the "wind chill warning" with an "extreme cold warning."
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 ...
Following an eruption of severe weather in the Plains Tuesday and Wednesday, an expansive area of the southern United States will be at risk for potentially damaging thunderstorms Thursday. Severe ...
Since the NWS discontinued the separate significant weather advisory product in July 2021, Special Weather Statements have been used most commonly to alert of sub-severe thunderstorms (containing sustained winds or gusts of 40–57 mph (64–92 km/h) and/or hail less than one inch (2.5 cm) in diameter, in addition to frequent to continuous ...
A blast of Arctic air brought punishing cold winds and bands of heavy lake-effect snow that buried some towns in fresh feet of snow into Friday, AccuWeather meteorologists warned. However, the ...
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."