The Hong Kong Observatory issued an urgent bulletin on the morning of 21 July 2026 warning that a band of intense thundery showers moving eastwards across the Pearl River Delta would reach the city within hours. The forecaster said that squally thunderstorms would affect parts of the territory through the late morning and early afternoon, bringing brief but violent downpours and wind gusts that could exceed 70 km/h. Although the alert focused on public‐safety precautions, it immediately triggered a chain reaction in the travel and transport sector. Airport Authority Hong Kong activated its adverse-weather contingency plan, cautioning airlines to expect runway-flow restrictions and possible ground-handling delays. Carriers including Cathay Pacific and Hong Kong Airlines posted notices on social media urging passengers departing or transiting through Hong Kong International Airport to check flight status before leaving for the airport and to allow extra time for immigration and security formalities. Ferry operators serving the Hong Kong–Zhuhai–Macao Bridge and the outlying-islands network issued similar advisories about potential sailing suspensions if lightning intensity increased. The timing is awkward for business travellers: Tuesday is one of the peak departure days for the week-long Book Fair and several trade exhibitions ending today at the Convention & Exhibition Centre, and hotel concierges reported a surge in early check-out requests as delegates tried to beat the weather. Corporate mobility managers who spoke to the Post said their companies had proactively rescheduled cross-boundary road transfers to Shenzhen via the Lok Ma Chau Spur Line to avoid the exposed bridge section at the Hong Kong–Zhuhai–Macao crossing. Hong Kong’s Transport Department reminded motorists that sudden cloudbursts can flood low-lying sections of the West Kowloon Highway leading to the airport, and advised cross-boundary coach operators to monitor the department’s CCTV feeds for real-time road conditions. The Immigration Department, meanwhile, said all e-Channel automated gates would remain open but warned travellers that biometric sensors are less effective when passports are wet; officers will divert passengers to manned counters if necessary. While the Observatory expects conditions to improve overnight, it said a high-pressure ridge is likely to bring very hot weather later in the week, followed by renewed instability over the weekend. That roller-coaster forecast means travel managers should continue to monitor weather bulletins closely and build schedule flexibility into regional itineraries for the next seven days.
Source: South China Morning Post
