chinook

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Flower. Fruit tree. Cherry. Cherry tree. Cherry blossom. Spring. Close-up of cherry blossoms in bloom.

The Perils of an Early Spring

September 11, 2005, ozone thinning over antarctica reached its maximum extent for the year.

Is the Ozone Layer Finally Healing Itself?

High-oblique view of the extra-tropical unnamed cyclone that merged with Hurricane Earl is featured in this image taken by an Expedition 24 crew member on the International Space Station (Sept. 2010).

Is the Number of Hurricanes Increasing?

Lightning over the outskirts of Oradea, Rom., during the thunderstorm of August 17, 2005.

16 Questions About Earth’s Atmsophere and Weather Answered

Lightning over a farm field. Weather electricity thunderstorm light energy tree

Can Lightning Strike the Same Place Twice?

Discover

Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)

6 Cultures That Recognize More than Two Genders

Secret Service Agent Listens To Earpiece

Secret Service Code Names of 11 U.S. Presidents

United States Presidential Election of 2012. Mitt Romney. Official portrait of President Barack Obama in the Oval Office, Dec. 6, 2012 after his reelection Nov. 6, 2012. Official portrait Obama

10 Democrats Who Made History

A tornado in rural Iowa sweeps dangerously near a farm. Weather storm

Why Does the United States Have More Tornadoes than Any Other Country?

Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.

9 of the World’s Deadliest Mammals

Hemp (Cannabis sativa).

9 Mind-Altering Plants

Flag of Bhutan

6 Small Kingdoms of the World

chinook: References & Edit History

More Articles On This Topic

Assorted References

Colorado
- In Colorado: Climate of Colorado
Montana
- In Montana: Climate
windstorms
- In windstorm

Article Contributors

Primary Contributors

The Editors of Encyclopaedia Britannica

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	Invalidated site: Fact Monster - Encyclopedia - Chinook.	Gloria Lotha	Oct 11, 2022
	Add new Web site: Fact Monster - Encyclopedia - Chinook.	Parul Jain	Nov 16, 2011
	Add new Web site: How Stuff Works - Science - Chinook.	Parul Jain	Nov 16, 2011
	Media added.	Amy Tikkanen	May 04, 2010
	Article added to new online database.	The Editors of Encyclopaedia Britannica	Jul 20, 1998