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Unit 6: Local and General Winds

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Wind Effects   ::   General Winds   ::   Local Winds   ::   Winds of Concern   ::   Wind Input   ::   Exercises

Objectives:

Upon completion of this unit you will be expected to:

  • Explain the relationship between general, local, surface and midflame winds.
  • Give the origins or causes of six kinds of winds, local or general.
  • Given locations on a topographic map, describe typical slope and valley winds at those locations for various times of day.
  • Show the usual winds that result with a cold front passage.
  • Illustrate the first three stages of thunderstorm development, and describe the weather conditions associated with each stage.
  • Explain how windspeeds are measured, and how wind predictions are applied to fire spread calculations.
  • Determine midflame windspeeds when given the 20-foot surface winds, fuel type or model, and terrain features.

Introduction:

This unit addresses winds, both local and general, and what firefighters should know about them.

Copyright 2008, by the Contributing Authors. Cite/attribute Resource . admin. (2005, September 28). Unit 6: Local and General Winds. Retrieved January 07, 2011, from Free Online Course Materials — USU OpenCourseWare Web site: http://ocw.usu.edu/Forest__Range__and_Wildlife_Sciences/Wildland_Fire_Management_and_Planning/Unit_6__Local_and_General_Winds.html. This work is licensed under a Creative Commons License Creative Commons License