J (sd59fifty)

Race #2384

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Official speed 67.70 wpm (71.43 seconds elapsed during race)
Race Start June 20, 2017 10:13:03am UTC
Race Finish June 20, 2017 10:14:14am UTC
Outcome No win (2 of 3)
Opponents 1. gchenstephen (69.20 wpm)
Accuracy 98.0%
Points 0.00
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.