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Norman, OK, United States

Edwards R.,Storm Prediction Center | La Due J.G.,NWS Warning Decision Training Branch | Ferree J.T.,NWS Office of Climate | Scharfenberg K.,NWS Office of Climate | And 2 more authors.
Bulletin of the American Meteorological Society | Year: 2013

An enhanced Fujita (EF) scale stakeholder's meeting (EFSSM) was convened in March 2010 to evaluate the EF scale, to understand new techniques in estimating damaging wind strength, and to map out a plan for future improvements. Discussion topics included variations in construction practices and structural integrity within any given DI, changes in vulnerability of single damage indicator (DIs) based on directional wind angle and vertical velocity, full-scale testing facilities for wind effects on structures, inconsistencies in building codes and enforcement thereof, the effects of flying debris and surrounding surface roughness, and the weakest points of structural failure. The international colleagues expressed concern that the diversity of construction habits among the DIs would force modifications to the EF scale prior to adoption. Given this diversity, one proposal was forwarded to consider all countries to adopt a more universal, physically derived wind speed scale, which could serve as a focus to bind all other wind speed and damage scales.

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