Based on the physical figures, the temperature might be
influenced somewhat by the hot air coming from the South steadily on the day
time; and the sudden changing in weather  caused a sharp reduction from 22° to below 0°, which had been predicted by Jerome and John Muir when
seeing those white cumulus boiling and abnormal movements
of clouds and winds. Mt. Shasta. All Mt. Shasta special features: its location
at the southern end of Cascade Range, the height of 14,179-feet peaks, the
existence of potentially active volcanos, the suddenly rapid change in
temperature and the formation of cumulus by receiving very high moisture from
the ocean proved its severely and potentially dangerous environment.