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  Image: Geographic Location Direction Photo #: ISS055-E-1038 Date: Mar. 2018
Geographic Region: USA-NEVADA

Ordering information for space photography
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  View Low-Resolution Image  
  Seasons of Snow in the West

Astronauts aboard the International Space Station captured these photos while flying over the western United States. The wide field of view in the top photo stretches from the Sierra Nevada of California to the Columbia Plateau of Oregon and the Snake River Valley of Idaho. Lake Tahoe is nestled on the border of California and Nevada.

A few days before the top picture was taken, the Sierra Nevada around Lake Tahoe received a near-record amount of snowfall. During March 2018, Lake Tahoe was buried with 230 inches of snow after an unusually dry winter.

The second photo shows Lake Tahoe in August 2017 with very little snowpack left on the mountains. The region depends on annual snowfall both for ski resorts and for a freshwater supply.

East of the Sierra Nevada, the Great Basin Desert covers most of Nevada. The Great Basin is classified as a cold desert because it receives precipitation during the winter months. The Sierra Nevada and Cascade Mountains create a rain shadow that prevents moisture from moving across the mountains; this leads to a desert climate to the east of the range fronts. The landscape of the Great Basin Desert consists of alternating valleys and mountains, and is part of a region known to geologists as the Basin and Range Province. In the March 2018 photo, these mountain ranges are snowcapped, while the desert floor remains untouched.

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Images: All Available Images Low-Resolution 458k
Mission: ISS055  
Roll - Frame: E - 1038
Geographical Name: USA-NEVADA  
Center Lat x Lon: 41.0N x 119W
Film Exposure:   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 25
Camera: N8
Camera Tilt: 55   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 50  
Nadir to Photo Center Direction: N   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:  
Date: 20180305   YYYYMMDD
Time: 181921   GMT HHMMSS
Nadir Lat: 35.9N  
Latitude of suborbital point of spacecraft
Nadir Lon: 118.7W  
Longitude of suborbital point of spacecraft
Sun Azimuth: 143   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 215   nautical miles
Sun Elevation: 41   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:  
Water Views:  
Atmosphere Views:  
Man Made Views:  
City Views:  
Photo is not associated with any sequences

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This service is provided by the International Space Station program and the JSC Earth Science & Remote Sensing Unit, ARES Division, Exploration Integration Science Directorate.
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