Observatory record is broken, 600mm of rain is dumped on Sha Tin, and Jockey Club cancels night meeting The Observatory set a record yesterday by issuing the most weather warnings and signals at the same time on a day when torrential rain caused widespread flooding and landslides and forced the first night races of the season to be cancelled. The No 3 strong wind signal was also raised for one of the shortest periods on record without a No 8 following. In the 24 hours to 10.15pm, more than 600mm of rain was dumped on Sha Tin, while more than 300mm fell on Tseung Kwan O. Between 11.45am and 12.15pm, the landslip, thunderstorm and red rainstorm warnings were all issued alongside the No 3 signal. The Observatory said this had never happened before. The previous record was set in 1999 when a landslip and rainstorm warning was issued alongside a typhoon signal, an Observatory spokesman said. The No 3 signal was raised for four hours, from 10.35am to 2.40pm. The only time it was raised for less than that, without a No 8 signal being raised, was on July 1, 1966, when it went up for one hour. An Observatory spokesman said that although a tropical cyclone brought heavy rain, the winds were not particularly strong, but a sudden change in wind direction justified the decision to raise the No 1 signal to a No 3 signal. 'The tropical depression was edging west-northwest, but it changed direction to northwest. That meant that Hong Kong would be affected as winds would be east to south easterly,' scientific officer Tam Cheuk-ming said. There were 18 flooding cases on Hong Kong Island, 11 in Kowloon and two in the New Territories. The most serious landslides occurred on Hong Kong Island. Shek O Road was closed to traffic at one stage when a hillside collapsed, bringing down 20 cubic metres of debris. At Mount Butler, a landslip along Sir Cecil's Ride also brought down 20 cubic metres of debris - causing the road to be limited to single-lane traffic. The Hong Kong Jockey Club announced the cancellation of its first night meeting of the season early yesterday afternoon, shortly before the lowering of the No 3 signal. East Rail train services were disrupted during the morning rush hour for 40 minutes due to wiring problems near University Station. The second disruption in five days saw the closure of some gates during rush hour as the KCRC implemented crowd control measures. Scores of passengers were affected. Services between Fo Tan and Tsim Sha Tsui East operated at 10-minute intervals while trains between Fo Tan and Lo Wu ran at 20-minute intervals. A Polytechnic University engineer said the wiring problems were caused by the heavy rain. Democratic Party legislator Andrew Cheng Kar-foo called for the introduction of a penalty system for service disruptions. He said the MTR Corp and Kowloon-Canton Railway Corporation together have had 2,000 minutes of disrupted services since 2004. Mr Cheng suggested two penalty points for every disruption of eight to 15 minutes, and three penalty points for every 16-20 minutes' disruption.