ATOC 1050 chapter 16 notes

ATOC 1050 chapter 16 notes - Chapter 16 Rauber Mountain...

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Chapter 16, Rauber – Mountain Windstorms with emphasis on Colorado’s Chinooks I. Mountain downslope winds and windstorms A. Winds are blowing from the top of the mountain to the valley – hence “downslope” B. Winds adiabatically compress, dry, and warm C. Winds can exceed hurricane force (greater than or equal to 75mph) D. These winds have different names depending on where they occur geographically: 1. Chinook – east slope of the Rockies including Boulder and Denver 2. Bora – former Yugoslavia 3. Santa Ana – Southern California 4. Foehn – Alps 5. Nor’wester – New Zealand 1
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E. Detailed look at Chinooks: 1. Usually occur from Nov. – Mar. on east slope of Rockies out to about I-25. 2. Wind gusts can exceed 115mph 3. Boulder often gets the worst Chinooks 4. Mostly pre-frontal 5. Winds ahead of the front should be out of the west, northwest 6. Neutral stability on both sides of the continental divide of the Rockies. 7. Jet max in southern Wyoming with
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ATOC 1050 chapter 16 notes - Chapter 16 Rauber Mountain...

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