Yankton, Dak.
Wind storms are preceded by falling barometer, sudden rise of temperature, clouds moving rapidly from the northwest, with southeast surface wind.
If a calm, with high temperature, occurs after a brisk northerly wind for twenty-four or forty-eight hours, a northwest gale may be expected.
Rain storms are preceded by barometric fluctuations, a hazy, ragged-edged, dark cloud, and wind from east to northeast.
The following tables contain the information heretofore published in pamphlet form under the title of “Rain and Dry Winds,” computed for geographical districts.
Table I. Shows the quadrant from which the winds are most likely to be followed by rain or snow.
Table II. Shows the quadrant from which the winds are least likely to be followed by rain or snow.
These tables are computed from all the observations made by this bureau since its establishment to January 1, 1882.
The districts herein referred to are those adopted by this office as shown by the “District Map.” For convenience of reference they are herein described at the foot of each table.