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Storm Prediction Center Day 1 Outlook on November 17. Based on computer models, the Storm Prediction Center (SPC) began to assess the possibility of a widespread severe weather event for November 17 as early as November 12, though too much uncertainty existed at the time to delineate the probability and scale of the event. [7]
Tornado outbreak of November 17, 2013 – The high risk was initially issued at 06Z for a 30% probability of significant tornadoes. This was an unusually far north tornado outbreak and one of only five high risk days during the month of November in recorded history (three since 2000). [ 283 ]
The 2013 Washington, Illinois, tornado was an unusually powerful and violent tornado that caused catastrophic damage to the city of Washington and several farmsteads in rural central Illinois during the early afternoon of November 17, 2013. The tornado resulted in three fatalities and injured 125 people.
As a very strong and rapidly deepening storm system encountered an unseasonably warm air mass, a high risk of severe weather was issued by the SPC for November 17 for a large part of the Midwest, for only the second time in 2013 and the first time in November since November 15, 2005. [92]
Storm Prediction Center Extremely Critical Fire Weather Events – 2000–2009 [nb 1] Date Year Region Acres burned Fatalities Outlook Notes May 11: 2000: Arizona, New Mexico [3] 43,000 [nb 2] 0: Cerro Grande Fire [4] May 15: 2000: Nevada, Utah, Colorado, Arizona, New Mexico [5] 43,000 [nb 2] 0: Cerro Grande Fire [4] May 16: 2000
Convective mesoscale discussions are issued by the National Oceanic and Atmospheric Administration’s Storm Prediction Center based on the National Weather Center in Norman, Oklahoma. [ 1 ] [ 2 ] One type of mesoscale discussion is a meso-gamma mesoscale discussion , which are for tornadoes believed to be at least EF2 on the Enhanced Fujita ...
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin — a high-end classification of tornado warning — sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ground ...
Damage and debris from the tornado. During the overnight hours of October 13–14, 2016, a powerful extratropical cyclone approached the Pacific Northwest.The Storm Prediction Center noted a low possibility for thunderstorms in association with this system as it neared the coast, and primarily focused on the large-scale damaging wind threat.