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Show SIGNAL SERVICE FLAGS. A Kay to the Displays Reinf? Hong r by-Uncle by-Uncle Sam's vt'Mtber Prophet. The weather signal flags displayed over the board of trade building mean as follows: Number 1 White flag, sis feet squcre, Indicates In-dicates clear weather. Number 2 Blue flag, six feet square, Indicates Indi-cates rain or snow. Number 3 white and blue flag (parallel bars r.f white and blue), six feet square, indicates indi-cates that local rains or showers will occur, and that the rainfall will not be general. Number 4 Black triangular flag, four feet at the base and six feet in length, always refers re-fers to temperature; when placed above number 1, 2 or 3, indicates warmer weather; when placed below nam- bers 1, 2, or 3, indicates colder weather; when not displayed, the indications in-dications are that the temperature will remain re-main stationary, or that the change in teia perature will not vary more than four degrees de-grees from the temperature of the same hour of tho preceding day from March to October inclusive, and not more than six degrees lor the remaining months of the year. Number 5, white flag, six feat square, with black square in center, indicates the approatb. of a sudden and decided fall in temperature. This signal is not to be displayed unless it is expected that the temperaturo will fall to forty-two degrees, or lower, and is usually rdere 1 at least twenty-four hours in advance ad-vance of the cold wave. When number 5 is disDlayed, number 4 is always omitted. When displayed on poles, the signals should be arranged to read downward; when displayed from horizontal supports a small streamer should be attached to indicate tho point from which the signals are to be read. INTSRPRETARION OF DISPLAYS. No. 1, alone, indicantes fair weather, stationary sta-tionary temperature. No. 2, alone, indicates rain or snow, sta-tioary sta-tioary temperature. No. 3, alone, indicates local rain, station-ary station-ary temperature. No. 1, with No. 4 above It, indicates fair weather, warmer. No. 1, with No. 4 below it, indicates fair weather colder. No. 2, with No. 4 above it.iudicates warmer wrather, rain or snow. No. 2, with No. 4 below it, indicates eolde" weather, rain or snow. No. 3, with No. 4 above it,indicates warmc weather with local rains. No. 3, with No. 4 below it, indicates colder with local rains. No. 1, with No. 5 above it. indicates fair weather, cold wave. No. 2, with No. 5 above it, indicates wet weather, cold wave. j |