NOTE.—Contains on reverse, [Explanation of red pennant, small craft warning].—Highest velocity of wind, Feb. 1900-11.—Total amount of snow in inches, unmelted, Feb. 1900-11.—Average depth of snow on ground and average thickness of ice in harbor, etc., in inches, Feb. 1900-11.—Monthly mean temperature, winter, 1903-04,—Approximate location of submarine signal bell stations, Mar. 1911.—Distribution of wireless telegraph stations on Great Lakes and call letters for each.
The meteorological charts of the north Atlantic, north Pacific, and Indian oceans, and the Great Lakes, monthly, and of the south Atlantic and south Pacific oceans, quarterly, are issued by the Weather Bureau for gratuitous distribution to cooperating shipmasters and others interested in ocean meteorology.