Hong Kong Braces for Thunderstorms as Monsoon Signal Remains Active
AM730 · 4 SOURCESabout 2 hours ago2 MIN

Summary
The Hong Kong Observatory has maintained a Strong Monsoon Signal as a broad low pressure area continues to affect the northern part of the South China Sea. The current weather situation is being shaped by the interaction between this low pressure system and a ridge of high pressure over southeastern China, bringing strong winds and occasional showers to Guangdong and Hong Kong. Afternoon temperatures are forecast to reach approximately 32 to 33 degrees Celsius, with the New Territories expected to be one to two degrees warmer. The Observatory has issued a Special Weather Note warning that heat-triggered thunderstorms are expected to affect the city in the coming hours, with some areas experiencing heavy rain and gusty winds accompanied by thunder and lightning. A Very Hot Weather Warning is also currently in effect.
Key Points
- The Strong Monsoon Signal remains in force, with easterly winds averaging over 40 kilometres per hour and gusts occasionally reaching gale force
- As of 8am today (19th), the Observatory recorded a temperature of 29 degrees Celsius with relative humidity at 73 percent
- A broad low pressure area is affecting the northern South China Sea, with a second low pressure system located east of Luzon forecast to move toward Taiwan
- The Very Hot Weather Warning is in effect as temperatures climb to around 33 degrees Celsius in urban areas today
- Heat-triggered thunderstorms are expected to develop in the coming hours, bringing locally heavy rain and gusty winds to some areas
Why It Matters
The combination of very hot weather and severe thunderstorms poses health and safety risks to residents, particularly outdoor workers and vulnerable groups who may suffer heat-related illnesses. Mariners and those living near coastal areas should exercise caution due to strong winds and rough sea conditions caused by the monsoon . The approaching low pressure systems suggest that weather instability will continue through the latter part of this week, potentially affecting outdoor activities and transportation .
The combination of very hot weather and severe thunderstorms poses health and safety risks to residents, particularly outdoor workers and vulnerable groups who may suffer heat-related illnesses. Mariners and those living near coastal areas should exercise caution due to strong winds and rough sea conditions caused by the monsoon . The approaching low pressure systems suggest that weather instability will continue through the latter part of this week, potentially affecting outdoor activities and transportation .