Summer Storms in upper Thailand No. 1 (130/2023)

Another moderate high pressure system from China will cover upper Thailand and the South China Sea, forcing the stronger southerly and the southeasterly winds to bring the humidity from the Gulf of Thailand and the South China Sea to the upper country where hot weather occur. As a result, from 8 to 10 May, summer storms will be likely in upper Thailand, accompanying with thunderstorms, gusty winds and hail in some places, as well as some lightning strikes. People should beware of the severe condition by keeping off outdoor places, big trees, unsecured buildings and billboards and taking off metal decorations and mobiles. Farmers should prevent for crop damage.    

On 10 and 11 May, the low pressure cell in the middle South China Sea tends to intensify to cover central Vietnam and to weaken rapidly. It results in continuous thundershowers in the Northeast.

From 8 to 12 May, the low pressure cell over the Bay of Bengal will be likely to develop into a tropical cyclone, moving to middle Bengal. It leads to the stronger southwesterly wind prevailing across the Andaman Sea with more rains in the South. Heavy to very heavy rains are also possible in some places. In the upper Andaman Sea, the strong wind forces the waves 2-3 meters high and in thundershowers more than 3 meters high. Meanwhile the lower Andaman Sea has the waves about 2 meters high and in thundershowers more than 2 meters high. All ships should proceed with caution and keep off thundershowers. Small boats in the Andaman Sea should keep ashore. 

The advisory is in effect on 6 May 2023, at 5.00 a.m.

This next issue will be at 7 May 2023, at 5.00 p.m.

(Signed)   Acting Sub Lt Thanasith Iamananchai    

(Thanasith Iamananchai)  

Deputy Director-General 

Acting Director-General, Thai Meteorological Department