Maximum gust peak speeds and maximum hourly mean winds with associated wind directions recorded at various stations when the tropical cyclone warning signals Dianmu were in force
At Bluff Head (Stanley) , Maximum Gust: SSE 62 km/h ( 2:26 am 18 Aug ); Maximum Hourly Wind: SSE 38 km/h ( 4:00 am 18 Aug )
At Central Pier , Maximum Gust: SE 52 km/h ( 2:45 am 18 Aug ); Maximum Hourly Wind: E 30 km/h ( 12:00 pm 17 Aug )
At Cheung Chau , Maximum Gust: SE 79 km/h ( 3:56 am 18 Aug ); Maximum Hourly Wind: SE 49 km/h ( 4:00 am 18 Aug )
At Cheung Chau Beach , Maximum Gust: E 56 km/h ( 11:35 pm 17 Aug ); Maximum Hourly Wind: E 38 km/h ( 11:00 pm 17 Aug )
At Green Island , Maximum Gust: SSE 70 km/h ( 2:54 am 18 Aug ); Maximum Hourly Wind: NE 40 km/h ( 12:00 pm 17 Aug )
At Hong Kong International Airport , Maximum Gust: SE 54 km/h ( 4:01 am 18 Aug ); Maximum Hourly Wind: SSE 27 km/h ( 5:00 am 18 Aug )
At Kai Tak , Maximum Gust: ESE 62 km/h ( 7:03 am 18 Aug ); Maximum Hourly Wind: ESE 30 km/h ( 4:00 am 18 Aug )
At King's Park , Maximum Gust: SE 49 km/h ( 6:58 am 18 Aug ); Maximum Hourly Wind: ESE 19 km/h ( 7:00 am 18 Aug )
At Lau Fau Shan , Maximum Gust: ENE 47 km/h ( 12:41 pm 17 Aug ); Maximum Hourly Wind: ENE 27 km/h ( 1:00 pm 17 Aug )
Maximum Gust: ENE 47 km/h ( 12:58 pm 17 Aug );
At Ngong Ping , Maximum Gust: SW 96 km/h ( 9:25 am 18 Aug ); Maximum Hourly Wind: E 63 km/h ( 11:00 pm 17 Aug )
At North Point , Maximum Gust: ENE 41 km/h ( 12:16 pm 17 Aug ); Maximum Hourly Wind: E 30 km/h ( 12:00 pm 17 Aug )
Maximum Gust: ESE 41 km/h ( 2:55 am 18 Aug );
At Peng Chau , Maximum Gust: E 51 km/h ( 2:47 am 18 Aug ); Maximum Hourly Wind: E 27 km/h ( 12:00 pm 17 Aug )
Maximum Gust: SE 51 km/h ( 4:09 am 18 Aug );
Maximum Gust: ESE 51 km/h ( 7:07 am 18 Aug );
At Ping Chau , Maximum Gust: SE 31 km/h ( 2:59 am 18 Aug ); Maximum Hourly Wind: E 6 km/h ( 12:00 pm 17 Aug )
Maximum Hourly Wind: SE 6 km/h ( 11:00 am 18 Aug )
At Sai Kung , Maximum Gust: SSE 62 km/h ( 2:31 am 18 Aug ); Maximum Hourly Wind: SSE 30 km/h ( 8:00 am 18 Aug )
At Sha Chau , Maximum Gust: SE 51 km/h ( 3:33 am 18 Aug ); Maximum Hourly Wind: SE 34 km/h ( 4:00 am 18 Aug )
At Sha Lo Wan , Maximum Gust: E 75 km/h ( 4:16 am 18 Aug ); Maximum Hourly Wind: E 25 km/h ( 7:00 am 18 Aug )
At Sha Tin , Maximum Gust: SSE 54 km/h ( 2:56 am 18 Aug ); Maximum Hourly Wind: SE 16 km/h ( 5:00 am 18 Aug )
At Shek Kong , Maximum Gust: ENE 49 km/h ( 6:51 pm 17 Aug ); Maximum Hourly Wind: E 22 km/h ( 7:00 pm 17 Aug )
At Star Ferry (Kowloon) , Maximum Gust: E 54 km/h ( 1:59 am 18 Aug ); Maximum Hourly Wind: E 31 km/h ( 7:00 am 18 Aug )
At Ta Kwu Ling , Maximum Gust: E 43 km/h ( 2:49 am 18 Aug ); Maximum Hourly Wind: ENE 14 km/h ( 3:00 am 18 Aug )
At Tai Mei Tuk , Maximum Gust: SE 62 km/h ( 2:44 am 18 Aug ); Maximum Hourly Wind: E 36 km/h ( 1:00 pm 17 Aug )
At Tai Mo Shan , Maximum Gust: SE 104 km/h ( 3:45 am 18 Aug ); Maximum Hourly Wind: SE 68 km/h ( 4:00 am 18 Aug )
At Tai Po Kau , Maximum Gust: ESE 52 km/h ( 2:41 am 18 Aug ); Maximum Hourly Wind: ESE 30 km/h ( 3:00 am 18 Aug )
At Tap Mun , Maximum Gust: SE 65 km/h ( 2:52 am 18 Aug ); Maximum Hourly Wind: SE 30 km/h ( 6:00 am 18 Aug )
At Tate's Cairn , Maximum Gust: S 76 km/h ( 3:03 am 18 Aug ); Maximum Hourly Wind: S 38 km/h ( 4:00 am 18 Aug )
Maximum Gust: S 76 km/h ( 8:19 am 18 Aug );
At Tseung Kwan O , Maximum Gust: E 63 km/h ( 2:31 am 18 Aug ); Maximum Hourly Wind: E 13 km/h ( 2:00 am 18 Aug )
At Tsing Yi Shell Oil Depot , Maximum Gust: ESE 43 km/h ( 2:57 am 18 Aug ); Maximum Hourly Wind: E 20 km/h ( 8:00 am 18 Aug )
At Tuen Mun Government Offices , Maximum Gust: SE 51 km/h ( 3:51 am 18 Aug ); Maximum Hourly Wind: SE 23 km/h ( 4:00 am 18 Aug )
At Waglan Island , Maximum Gust: SE 81 km/h ( 2:27 am 18 Aug ); Maximum Hourly Wind: SE 56 km/h ( 3:00 am 18 Aug )
At Wetland Park , Maximum Gust: ENE 38 km/h ( 12:34 pm 17 Aug ); Maximum Hourly Wind: ENE 16 km/h ( 1:00 pm 17 Aug )
At Wong Chuk Hang , Maximum Gust: SE 52 km/h ( 6:42 am 18 Aug ); Maximum Hourly Wind: E 22 km/h ( 4:00 am 18 Aug )
At Bluff Head (Stanley) , Maximum Gust: SSE 62 km/h ( 2:26 am 18 Aug ); Maximum Hourly Wind: SSE 38 km/h ( 4:00 am 18 Aug )
At Central Pier , Maximum Gust: SE 52 km/h ( 2:45 am 18 Aug ); Maximum Hourly Wind: E 30 km/h ( 12:00 pm 17 Aug )
At Cheung Chau , Maximum Gust: SE 79 km/h ( 3:56 am 18 Aug ); Maximum Hourly Wind: SE 49 km/h ( 4:00 am 18 Aug )
At Cheung Chau Beach , Maximum Gust: E 56 km/h ( 11:35 pm 17 Aug ); Maximum Hourly Wind: E 38 km/h ( 11:00 pm 17 Aug )
At Green Island , Maximum Gust: SSE 70 km/h ( 2:54 am 18 Aug ); Maximum Hourly Wind: NE 40 km/h ( 12:00 pm 17 Aug )
At Hong Kong International Airport , Maximum Gust: SE 54 km/h ( 4:01 am 18 Aug ); Maximum Hourly Wind: SSE 27 km/h ( 5:00 am 18 Aug )
At Kai Tak , Maximum Gust: ESE 62 km/h ( 7:03 am 18 Aug ); Maximum Hourly Wind: ESE 30 km/h ( 4:00 am 18 Aug )
At King's Park , Maximum Gust: SE 49 km/h ( 6:58 am 18 Aug ); Maximum Hourly Wind: ESE 19 km/h ( 7:00 am 18 Aug )
At Lau Fau Shan , Maximum Gust: ENE 47 km/h ( 12:41 pm 17 Aug ); Maximum Hourly Wind: ENE 27 km/h ( 1:00 pm 17 Aug )
Maximum Gust: ENE 47 km/h ( 12:58 pm 17 Aug );
At Ngong Ping , Maximum Gust: SW 96 km/h ( 9:25 am 18 Aug ); Maximum Hourly Wind: E 63 km/h ( 11:00 pm 17 Aug )
At North Point , Maximum Gust: ENE 41 km/h ( 12:16 pm 17 Aug ); Maximum Hourly Wind: E 30 km/h ( 12:00 pm 17 Aug )
Maximum Gust: ESE 41 km/h ( 2:55 am 18 Aug );
At Peng Chau , Maximum Gust: E 51 km/h ( 2:47 am 18 Aug ); Maximum Hourly Wind: E 27 km/h ( 12:00 pm 17 Aug )
Maximum Gust: SE 51 km/h ( 4:09 am 18 Aug );
Maximum Gust: ESE 51 km/h ( 7:07 am 18 Aug );
At Ping Chau , Maximum Gust: SE 31 km/h ( 2:59 am 18 Aug ); Maximum Hourly Wind: E 6 km/h ( 12:00 pm 17 Aug )
Maximum Hourly Wind: SE 6 km/h ( 11:00 am 18 Aug )
At Sai Kung , Maximum Gust: SSE 62 km/h ( 2:31 am 18 Aug ); Maximum Hourly Wind: SSE 30 km/h ( 8:00 am 18 Aug )
At Sha Chau , Maximum Gust: SE 51 km/h ( 3:33 am 18 Aug ); Maximum Hourly Wind: SE 34 km/h ( 4:00 am 18 Aug )
At Sha Lo Wan , Maximum Gust: E 75 km/h ( 4:16 am 18 Aug ); Maximum Hourly Wind: E 25 km/h ( 7:00 am 18 Aug )
At Sha Tin , Maximum Gust: SSE 54 km/h ( 2:56 am 18 Aug ); Maximum Hourly Wind: SE 16 km/h ( 5:00 am 18 Aug )
At Shek Kong , Maximum Gust: ENE 49 km/h ( 6:51 pm 17 Aug ); Maximum Hourly Wind: E 22 km/h ( 7:00 pm 17 Aug )
At Star Ferry (Kowloon) , Maximum Gust: E 54 km/h ( 1:59 am 18 Aug ); Maximum Hourly Wind: E 31 km/h ( 7:00 am 18 Aug )
At Ta Kwu Ling , Maximum Gust: E 43 km/h ( 2:49 am 18 Aug ); Maximum Hourly Wind: ENE 14 km/h ( 3:00 am 18 Aug )
At Tai Mei Tuk , Maximum Gust: SE 62 km/h ( 2:44 am 18 Aug ); Maximum Hourly Wind: E 36 km/h ( 1:00 pm 17 Aug )
At Tai Mo Shan , Maximum Gust: SE 104 km/h ( 3:45 am 18 Aug ); Maximum Hourly Wind: SE 68 km/h ( 4:00 am 18 Aug )
At Tai Po Kau , Maximum Gust: ESE 52 km/h ( 2:41 am 18 Aug ); Maximum Hourly Wind: ESE 30 km/h ( 3:00 am 18 Aug )
At Tap Mun , Maximum Gust: SE 65 km/h ( 2:52 am 18 Aug ); Maximum Hourly Wind: SE 30 km/h ( 6:00 am 18 Aug )
At Tate's Cairn , Maximum Gust: S 76 km/h ( 3:03 am 18 Aug ); Maximum Hourly Wind: S 38 km/h ( 4:00 am 18 Aug )
Maximum Gust: S 76 km/h ( 8:19 am 18 Aug );
At Tseung Kwan O , Maximum Gust: E 63 km/h ( 2:31 am 18 Aug ); Maximum Hourly Wind: E 13 km/h ( 2:00 am 18 Aug )
At Tsing Yi Shell Oil Depot , Maximum Gust: ESE 43 km/h ( 2:57 am 18 Aug ); Maximum Hourly Wind: E 20 km/h ( 8:00 am 18 Aug )
At Tuen Mun Government Offices , Maximum Gust: SE 51 km/h ( 3:51 am 18 Aug ); Maximum Hourly Wind: SE 23 km/h ( 4:00 am 18 Aug )
At Waglan Island , Maximum Gust: SE 81 km/h ( 2:27 am 18 Aug ); Maximum Hourly Wind: SE 56 km/h ( 3:00 am 18 Aug )
At Wetland Park , Maximum Gust: ENE 38 km/h ( 12:34 pm 17 Aug ); Maximum Hourly Wind: ENE 16 km/h ( 1:00 pm 17 Aug )
At Wong Chuk Hang , Maximum Gust: SE 52 km/h ( 6:42 am 18 Aug ); Maximum Hourly Wind: E 22 km/h ( 4:00 am 18 Aug )