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spc [2017/04/14 17:32] forsythsnow [Risk Classifications of Severe Weather] |
spc [2017/06/07 20:31] (current) forsythsnow |
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The Storm Prediction Center is a branch of the NWS and provides data to the public about severe weather as well as other hazardous weather. | The Storm Prediction Center is a branch of the NWS and provides data to the public about severe weather as well as other hazardous weather. | ||
===== Severe Weather ===== | ===== Severe Weather ===== | ||
- | The SPC issues probability maps for days 1 through 8, but in different forms. The day 1 always provides the probability of tornadoes, wind, hail, and the risk of severe weather. Days 2 and 3 only provide the risk and probabilistic outlook for any severe weather type. Days 4 through I provide only the probability of severe weather in general. | + | The SPC issues probability maps for days 1 through 8, but in different forms. The day 1 always provides the probability of tornadoes, wind, hail, and the risk of severe weather. Days 2 and 3 only provide the risk and probabilistic outlook for any severe weather type. Days 4 through 8 provide only the probability of severe weather in general. |
==== Risk Classifications of Severe Weather ==== | ==== Risk Classifications of Severe Weather ==== | ||
Severe weather is classified by the SPC in 6 ways: | Severe weather is classified by the SPC in 6 ways: | ||
- | * General thunderstorms | + | * General thunderstorms - weak thunderstorms, maybe a few with 40mph winds and small hail. |
* Marginal risk - chance of spotty damaging winds, spotty hail up to 1", very low possibly a tornado in the area. | * Marginal risk - chance of spotty damaging winds, spotty hail up to 1", very low possibly a tornado in the area. | ||
* Slight risk - medium chance of having high winds of 60mph+, hail greater than 1", low chance of a tornado in the area. | * Slight risk - medium chance of having high winds of 60mph+, hail greater than 1", low chance of a tornado in the area. | ||
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* High risk - reserved for definite tornado outbreaks and derechos. Tornadoes almost definite in the area, including strong, long track varieties, winds greater than 70mph likely. | * High risk - reserved for definite tornado outbreaks and derechos. Tornadoes almost definite in the area, including strong, long track varieties, winds greater than 70mph likely. | ||
+ | More detailed information about classifications can be found[[http://www.spc.noaa.gov/misc/SPC_probotlk_info.html|here]]. | ||
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+ | ==== SPC Link ==== | ||
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+ | http://www.spc.noaa.gov/ | ||
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+ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
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