bc414 (bc414)

Race #307

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Official speed 86.63 wpm (55.82 seconds elapsed during race)
Race Start December 11, 2018 6:26:58am UTC
Race Finish December 11, 2018 6:27:53am UTC
Outcome Win (1 of 2)
Accuracy 97.0%
Points 93.85
Text #3622192 (Length: 403 characters)

Valley (or graben) breezes and mountain breezes are a very localized phenomenon. They relate directly to daily temperature variations between summits and bases. Since it is in the highest reaches that the maximum diurnal range is attained, it is the summits which drive the mechanism. Nights in the mountains are colder than those in the valleys below, especially if moist air collects in those valleys.