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  2. List of Storm Prediction Center high risk days - Wikipedia

    en.wikipedia.org/wiki/List_of_Storm_Prediction...

    97 mph (156 km/h) 6. Tornado outbreak of April 13–16, 2012 – This was day 2 of aforementioned outbreak; it was only the second high risk to be issued on Day 2 (the day before the event; first Day 2 high risk was for April 7, 2006) and the first/only to date ever issued on the initial (0600Z) Day 2 outlook. [279]

  3. List of deadliest Storm Prediction Center days by outlook ...

    en.wikipedia.org/wiki/List_of_deadliest_Storm...

    The Storm Prediction Center issues daily outlooks denoting the risk for severe weather and wildfires for specific regions in the United States. For severe weather, which includes the risk for thunderstorms, tornadoes, hail, and straight-line winds, there are five risk levels indicating the probability for these hazards: marginal, slight, enhanced, moderate, and high.

  4. Storm Prediction Center - Wikipedia

    en.wikipedia.org/wiki/Storm_Prediction_Center

    The Storm Prediction Center issues convective outlooks (AC), consisting of categorical and probabilistic forecasts describing the general threat of severe convective storms over the contiguous United States for the next six to 192 hours (Day 1 through Day 8). These outlooks are labeled and issued by day, and are issued up to five times per day.

  5. List of Storm Prediction Center extremely critical days

    en.wikipedia.org/wiki/List_of_Storm_Prediction...

    Progression of a well-anticipated extremely critical event across the Central Plains on March 6, 2017. This event produced wildfires that burned 1,200,000 acres of land, and killed seven people. An extremely critical fire weather event is the greatest threat level issued by the NWS Storm Prediction Center (SPC) for wildfire events in the United ...

  6. Tornado outbreak of March 5–7, 2022 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_of_March_5...

    On March 4, the Storm Prediction Center (SPC) issued a slight risk outlook for severe weather for a negatively tilted shortwave trough positioned over the High Plains. The outlook included the possibility of strong winds, large hail, and a 5 percent chance for tornadoes, mostly throughout southern Iowa. The next day, the SPC upped their alert ...

  7. Tornado outbreak sequence of June 14–19, 2023 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_sequence...

    On June 15, the SPC released an outlook with a moderate risk of severe weather for portions of the High Plains. This outlook included a 10 percent risk for tornadoes along the panhandles of both Texas and Oklahoma. A shortwave trough began to move into the central U.S. Concurrently, an associated 80 kt upper-level jet moved into the southern ...

  8. Tornado outbreak of March 31 – April 1, 2023 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_of_March...

    The Storm Prediction Center (SPC) issued a rare high risk for severe weather in two areas of the Mississippi Valley on March 31, the first high risk issuance since March 25, 2021. Approximately 28 million people were placed under tornado watches, including multiple PDS tornado watches , from the evening of March 31 through the overnight hours ...

  9. Tornado outbreak sequence of May 2019 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_sequence...

    The Storm Prediction Center's day 1 convective outlook at 1630 UTC, featuring a high risk. On the morning of May 20, 2019, the Storm Prediction Center in Norman, Oklahoma issued a high risk for severe weather across western and central Oklahoma and northwest Texas.

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