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Published on Nov 18, 2015
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1.
Western US
Regional Weather Terms
Photo by
blmiers2
2.
Chinook Winds
Strong, dry winds that occur to the lee of the Rockies
Air warms rapidly as it descends the high mountains
Occurs across mountains in Montana, Wyoming and Colorado
Fairly common wintertime phenomenon
Photo by
theqspeaks
3.
Pogonip
Also known as ice fog
Forms when the air temperature is well below freezing
Composed entirely of tiny ice crystals that are suspended in the air
Occurs frequently in mountains valleys in Nevada, Utah and Idaho
Photo by
Éole
4.
Rain Shadow
The leeward side of a mountain or mountain range
Where less precipitation falls from one side to the other
Significantly less precipitation than the opposite, windward side
Occurs frequently east of the Cascades in Oregon and Washington
Photo by
thor_mark
5.
Haboob
A dust storm which occurs along outflow of monsoon storms in the Southwest
Name originates from Sudan where storms occur over the Saharan Desert
Can cause travel delays and inhibit visibility
Hazardous to health due to the immense dust circulating in the air
Photo by
rscottjones
6.
Arroyo
Swift gullies that form during rain storms in the Southwest
Spanish name for stream
They are dry most of the time, but will drain excess water after a storm
Summer is the most dangerous time due to monsoon thunderstorms
The flooding of an arroyo is rare, occurring every 100 years or so
7.
Santa Ana Winds
Strong, dry winds that blow in Southern California
Caused by high pressure sitting over the high California and Nevada deserts
The air dries out and often warms up as it descends the mountains
The winds can kick up dust and increase the wildfire danger
Highest winds blow through canyons, mountain gaps and over passes
Photo by
Kaibab National Forest
8.
Tule Fog
Low-level moisture trapped in the Central California Valley
The fog becomes trapped for days on end in the winter months
Leading cause of weather-related casualties in California
Visibility becomes poor, near zero, along the I-5 and Highway 99
Photo by
emdot
9.
Kona Storms
Slow-moving winter storms that impact Hawaii
Known as cold core cyclones
Affect Hawaii one to three times a year
Bring heavy rainfall, flooding, hail and landslides
Also induce high swells, large surf and waterspouts
Photo by
archer10 (Dennis)
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