Very Hot Weather Warning was updated at 6:45 a.m. on 4 July
Under the influence of prolonged heat, members of the public should stay on the alert to prevent heat stroke or other discomforts related to very hot weather and pay due attention to health conditions. If symptoms such as dizziness, headache, nausea, shortness of breath or confusion develop, take rest and seek help immediately, and seek medical advice as soon as possible.
Elderly persons, pregnant women, infants and children, those with chronic illnesses, such as heart disease or high blood pressure, as well as the obese are more vulnerable to heat stroke. Watch out for any symptoms of heat stroke.
When engaged in work under hot weather or high-temperature environments, please refer to the Guidance Notes on Prevention of Heat Stroke at Work of the Labour Department and take necessary precautions.
When engaged in outdoor activities, drink more water and avoid over exertion. If not feeling well, take a rest in the shade or cooler place as soon as possible. Perform outdoor activities in the morning or late afternoon.
During indoor activities, replenish water timely. If there is no air-conditioning, then windows should be kept open and fans be used as far as possible to maintain adequate indoor ventilation. Public facilities with heat sheltering may also be used.
Avoid prolonged exposure under sunlight. Light-coloured and air-permeable clothing, a wide-brimmed hat that covers the back of your neck and ultraviolet (UV) blocking sunglasses can reduce the chance of sunburn by solar UV radiation.
Choose a broad-spectrum water-resistant sunscreen product with a sun protective factor (SPF) of 30 or higher when doing outdoor activities and apply liberally; reapply every two hours if you need to stay outdoors for a prolonged period, or after swimming, sweating or towelling off.
Beware of health and wellbeing of elderly or persons with chronic medical conditions. If you know of them, call or visit them occasionally and check whether their household ventilation and air-conditioning devices function properly.
Those more vulnerable to heat stroke should avoid outdoor activities and stay away from hot environment as far as possible. Stay in cool, well-ventilated or air-conditioned places.
Standby Signal, No.1 was updated at 1:45 p.m. on 4 July
Here is the latest Tropical Cyclone Warning Bulletin issued by the Hong Kong Observatory.
The Standby Signal, No. 1 is in force.
This means that a tropical cyclone now centred within about 800 kilometres of Hong Kong may affect us.
At 2 p.m., the tropical depression over the northeastern part of the South China Sea was estimated to be about 560 kilometres southeast of Hong Kong (near 19.5 degrees north 118.6 degrees east) and is forecast to move northwest or west-northwest slowly, lingering over the northeastern part of the South China Sea. The circulation of the tropical depression is relatively small. It will be slow-moving and maintain a distance of over 400 kilometres from Hong Kong for the rest of today. The Standby Signal, No. 1 will remain in force for most of today. The tropical depression is expected to linger over the northeastern part of the South China Sea and intensify gradually today and tomorrow. It will then have a higher chance of turning northwards in the general direction of the vicinity of Taiwan Strait to the coast of eastern Guangdong. However, there are still uncertainties in its movement. Depending on the track of the tropical depression, its speed of intensification and the distance between its associated strong winds and the Pearl River Estuary, the Observatory will assess the need of issuing higher tropical cyclone warning signals later tomorrow to Sunday. Locally, it will be very hot today and in the next couple of days with temperatures reaching 35 degrees or above in some areas. High temperatures will also trigger showers and squally thunderstorms.
There will be swells. Members of the public should stay away from the shoreline, not to engage in water sports and pay attention to the latest weather information from the Observatory.
1. Precautions should be taken. Windows and doors should be checked.
2. Those who have duties during a tropical cyclone should now remain on call.
3. Fishing vessels and low power vessels in open sea should seek shelter as soon as possible and be secured properly with moorings.
4. Construction and property management practitioners should make sure that overhanging facilities and temporary structures outdoors are securely fastened, and should take precautionary measures.
5. Listen to radio, watch TV or browse the Hong Kong Observatory's website and mobile app for the latest information on the tropical cyclone.
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