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Sandberg weather station : history and climate, April 1932-March 1977
The Sandberg weather station (34°45'N, 118°44'W) established on 2 April 1932, has provided the National Weather Service with forty-five years of continuous data from the Tehachapi region, with no change in instrument exposure. Of the twenty-one first-order stations in California, Sandberg is second highest, at an elevation of 4,517 feet. A detailed examination of the development of the area around Sandberg includes the construction of the original Ridge Route, on which Sandberg is located. The development of aviation forecasting is discussed in conjunction with the establishment of the present station, as Sandberg is situated under the major airway between Los Angeles and San Francisco. Functions, equipment, and personnel at Sandberg are also examined. Analysis of climatic records for the forty-five year period from April 1932 through March 1977 includes discussion of temperature, precipitation, and wind patterns for the determination of climatic trends by means of a tabular summary of averages in three 15-year periods. A comparative study is shown of normal temperature and precipitation patterns at three stations with similar annual averages at approximate elevations. Average annual temperature at Sandberg is 55.1° F, normal rainfall totals 12.37 inches, and wind speeds average 10-14 mph. A slight cooling trend is established and correlated with precipitation.