Understanding Colorado Flooding


This is a reblog.

Can not improve on this one. Once again the “extreme” weather brigade are ill-informed or purposely deceptive. Your guess.
cbdakota

Real Science

The Poudre River in Fort Collins drains more than 500 square miles of mountains and empties through a narrow canyon.

ScreenHunter_573 Sep. 14 10.30

The Big Thompson River in Loveland drains more than 500 square miles of mountains and empties through a narrow canyon.

ScreenHunter_572 Sep. 14 10.30

The St. Vrain River, Lefthand Creek and Boulder Creek drain more than 500 square miles of mountains and empty through narrow canyons.

ScreenHunter_571 Sep. 14 10.29

Upslope winds force humid air from the plains up into the mountains. The air expands, cools and drops below its dew point. Rain falls and floods occur.

In 1976, the Big Thompson drainage received 14 inches of rain in four hours and produced one of America’s most deadly floods. This week’s rains have been nowhere near that intense.

In 1997, Spring Creek in Fort Collins received 10 inches of rain in four hours, and produced a flood with killed five people. Again, that rainfall was much more intense than this…

View original post 73 more words

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