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In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]
This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States from January to March 2024. Tornado counts are considered preliminary until final publication in the database of the National Centers for Environmental Information. [1]
The day 1 outlook for December 28, issued by the Storm Prediction Center. A moderate (4/5) risk was issued by the Storm Prediction Center for December 28, as a shortwave trough was expected to move through Texas and Louisiana, with the risk area also extending into Mississippi and extreme south bringing the expectation of large hail and multiple tornadoes, some being strong (EF2+).
Tornadoes of 2014#June 3–4 – The high risk was issued at 2000Z for 60% wind probability and potential derecho; tornado probability was 10%, well short of high-risk level. Extreme hail/wind and some tornadoes were reported, although most of the activity remained along or south of the southern part of the high risk.
High risk convective outlook issued by the Storm Prediction center at 13:00 UTC on May 6. Starting April 30, the Storm Prediction Center noted that certain models, including the ECMWF, forecasted a multi-day period of high instability and supportive wind shear across the Southern and Central Plains, [10] and by May 1, a 15% risk was added across Nebraska, Kansas, Oklahoma, and northern Texas. [11]
This article's lead section may be too long. Please read the length guidelines and help move details into the article's body. (August 2024) Tornadoes in the United States 1950-2019 A tornado strikes near Anadarko, Oklahoma. This was part of the 1999 Oklahoma tornado outbreak on May 3, 1999. Tornadoes are more common in the United States than in any other country or state. The United States ...
Satellite image of the storm system responsible for the tornado outbreak that occurred on April 25–28, 2024. On April 20, 2024, the National Weather Service's Storm Prediction Center (SPC) first delineated a severe weather risk for April 25–26, highlighting a zone extending from the Central Great Plains northeastward to the Midwestern U.S.
PDS Tornado Watches are often issued on high risk days for severe weather, though have been issued on high-end moderate risk days. [15] The PDS tornado watch shown below was issued on April 27 during the tornado outbreak sequence of April 25–28, 2024. [16]