Search results
Results from the WOW.Com Content Network
VORTEX1 was the first time scientists completely researched the entire evolution of a tornado with an array of instrumentation, enabling a greater understanding of the processes involved with tornadogenesis. A violent tornado near Union City, Oklahoma was documented in its entirety by chasers of the Tornado Intercept Project (TIP) in 1973 ...
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]
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 ...
The Minneapolis school board on Monday interviewed Sonia Stewart, the first of two superintendent finalists, kicking off a packed week set to end with the naming of the next leader of the state's ...
Elementary and middle school principals are taking stock and will huddle with district officials in the 8 o'clock hour. Petley said the district is currently taking things on a school-by-school basis.
He was the field commander (FC) of Project VORTEX in 1994-1995 where he worked with lead forecaster Charles A. Doswell III, participated in SUB-VORTEX and VORTEX-99, STEPS, IHOP, and served on the steering committee and was a lead principal investigator (PI) for VORTEX2 in 2009-2010 [6] as well as project manager for VORTEX-SE in 2016-2017.
The average tornado moves Southwest to Northeast in the U.S., but tornadoes have been known to move in any direction. The average forward speed of a tornado is 30 miles per hour (48 km/h), but has varied from stationary to 70 mph (110 km/h). Tornadoes can also accompany tropical storms and hurricanes as they move onto land.
The largest school death toll from a tornado was 69 during the Tri-State Tornado, which also struck Illinois and significantly raised that state's death toll. The greatest death toll at a single school also occurred during the Tri-State tornado, when it killed 33 at a school in De Soto, also in Illinois. This tornado also injured hundreds more ...