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Extratropical Cyclones Forming East of the Rocky Mountains
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Online 10.1: Alberta Clippers:
View animations of sea level pressure and temperature, national radar, and 850mb and 300mb upper air maps of an Alberta Clipper.
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Online 10.2: Colorado Lows:
A strong Rocky Mountain cyclone developed in 2004. Some of the severe weather that developed as a result included one tornado, large hail and high winds in the vicinity of Lake Michigan.
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Online 10.3: An Upper-Level Cyclone Crosses the Rockies:
Cyclones are three dimensional and as such are sometimes found primarily aloft with little coherence between the surface features of fronts and precipitation. The example cyclone provided here produced large snowfall totals in Denver during the New Year holiday, causing significant impact to local residents and nearby ski resorts.
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Online 10.4: Cutoff Lows:
Observe the persistence of a cutoff low by viewing visible satellite imagery and radar animations of the entire United States and a zoomed in view of the Midwest, where the low was centered.
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Example of Rocky Mountain Cyclone:
View the evolution of a Rocky Mountain cyclone in animations of 300mb and
850mb upper air maps, surface temperature and dewpoint temperature, national radar,
sea level pressure and wind vectors, and satellite animations of the visible, infrared, and water vapor channels.
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