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The meteorological office sends warning to signal stations. |
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When these warnings are received by the stations, it is displayed by a black canvas cone. |
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The cone is of one meter height and one meter width, appears as a triangle. |
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A north cone (hoisted upward) is displayed when gale expected from N'ly direction. |
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North cone may be displayed to an E'ly or W'ly gale when it is expected to change to a N'ly direction. |
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A South cone is displayed when gale expected from south. |
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South cone may be displayed when E'ly or W'ly gale expected to change to a S'ly direction. |