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The Storm Prediction Center (SPC) is a US government agency that is part of the National Centers for Environmental Prediction (NCEP), operating under the control of the National Weather Service (NWS), [1] which in turn is part of the National Oceanic and Atmospheric Administration (NOAA) of the United States Department of Commerce (DoC). [2]
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.
August 26, 2024 at 11:07 AM. The National Weather Service has issued a Severe Thunderstorm Watch for Cape Cod, in effect until 7 p.m. on Monday. The watch also includes Nantucket and Dukes ...
A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.
Hazardous weather outlook. Heat advisory. Heavy freezing spray warning. Heavy freezing spray watch. Heavy snow warning. History of Atlantic hurricane warnings. Hong Kong rainstorm warning signals. Hong Kong tropical cyclone warning signals. HURCON.
Generally, a warning covers a smaller geographic area and comes when the threat is more “imminent,” McClatchy News reported. For example, the weather service puts out a tornado watch “when ...
Severe weather is any dangerous meteorological phenomenon with the potential to cause damage, serious social disruption, or loss of human life. [1][2][3] These vary depending on the latitude, altitude, topography, and atmospheric conditions. High winds, hail, excessive precipitation, and wildfires are forms and effects, as are thunderstorms ...
If the alerted thunderstorm approaches warning criteria or severe weather associated with the storm is presently outside of but forecast to reach the advisory area, additional wording would be included in the product to advise the public, media outlets and trained spotters to monitor the weather situation and keep abreast of any warnings that ...