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They are generally only issued on the day of the event. However, there have been two occurrences (April 7, 2006, and April 14, 2012) of a high risk being issued for Day 2 of the outlook period (with the event occurring the following day). Under the official protocol, a high risk cannot be issued for Day 3 of the outlook period.
Day 1 Convective Outlook and probabilistic maps issued by the Storm Prediction Center on May 20, 2019 depicting a high risk day. The top map indicates the risk of general severe weather (including large hail , damaging winds, and tornadoes), while the bottom map specifically shows the risk percentage of a tornado forming within 25 miles (40 km ...
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 ...
Iowa Environmental Mesonet. Retrieved December 27, 2022. ^ Storm Prediction Center November 6, 2005 0100 UTC Day 1 Convective Outlook. ^ Storm Prediction Center March 3, 2020 0100 UTC Day 1 Convective Outlook. ^ Storm Prediction Center February 2, 2007 0100 UTC Day 1 Convective Outlook. ^ Storm Prediction Center December 11, 2021 1200 UTC Day 1 ...
English: SPC's Day 1 convective outlook issued at 06:00Z (12:00 AM CDT) on `March` `25`, `2021`, indicating a High and enhanced risk over the southwestern US. Date 24 March 2021 05:59:15.
English: SPC's Day 1 convective outlook issued at 16:30z (11:30 AM CDT) on March 25, 2021, indicating a high risk of severe weather. Date: 25 March 2021: Source:
Meteorological synopsis The tornado outlook issued by the SPC on the afternoon of December 9 (20:00 UTC) On December 5, the Storm Prediction Center issued a 5-day severe weather risk ahead of predictions that strong convective instability and wind shear would occur across portions of the Southern United States, from east Texas to western Mississippi.
A four-day tornado outbreak affected the Central and Southern United States in mid-December 2022. The outbreak produced strong tornadoes in Oklahoma, Texas, Louisiana, Mississippi, and Georgia, resulting in severe damage and three fatalities. On December 13, a high-end EF1 tornado was caught on video from multiple angles as it caused ...