General Education - Science - Public Storm Warning Signals

25 July 2022
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question
Public Storm Warning Signal (PSWS) No. 1
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Tropical cyclone winds of 30 to 60 kph are expected within the next 24 hours
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Public Storm Warning Signal (PSWS) No. 2
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Tropical cyclone winds of 61 to 120 kph are expected within the next 24 hours
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Public Storm Warning Signal (PSWS) No. 3
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Tropical cyclone winds of 121 to 170 kph are expected within the next 18 hours
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Public Storm Warning Signal (PSWS) No. 4
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Tropical cyclone winds of 171 to 220 kph are expected within the next 12 hours
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Public Storm Warning Signal (PSWS) No. 5
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Tropical cyclone winds of more than 220 kph are expected within 12 hours
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Tropical Depression (TD)
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up to 61 kph Signal no. 1
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Tropical Storm (TS)
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62 to 88 kph Signal no. 2
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Severe Tropical Storm (STS)
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89 to 117 kph Signal no. 3
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Typhoon (TY)
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118 to 220 kph Signal no. 4
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Super Typhoon (STY)
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exceeding 220 kph Signal no. 5