Thunderstorms forecast: Brace yourself for a wet and wild day

Heavy rainfall is expected across nearly all regions of Thailand today, with the Thai Meteorological Department (TMD) issuing warnings for 60 provinces. Northern, northeastern, eastern, central, and southern areas, including Bangkok and its vicinity, are advised to be cautious of potential heavy rain and flash floods.

The TMD forecasts that over the next 24 hours, a relatively strong monsoon trough will extend across the lower northern, upper central, and northeastern regions, moving towards a low-pressure area over Hainan Island, China.

Concurrently, a moderate southwest monsoon will cover the Andaman Sea, southern Thailand, and the Gulf of Thailand, although it is starting to weaken. These conditions will result in isolated heavy rainfall in the northern, northeastern, central, and southern regions, as well as in Bangkok and its surrounding areas.

Residents throughout Thailand are urged to be vigilant for heavy rain and accumulated rainfall, which could lead to flash floods and sudden water flows, particularly in areas near hillsides, waterways, and low-lying regions.

The Andaman Sea, southern Thailand, and the Gulf of Thailand will experience weak wind waves, with waves reaching heights of approximately 1 metre and over 2 metres in areas with thunderstorms. Mariners in these areas should navigate cautiously and avoid sailing in stormy conditions.

Northern region: Thunderstorms are expected in 70% of the area, with heavy rain in some parts, specifically in Mae Hong Son, Chiang Mai, Lamphun, Lampang, Tak, Kamphaeng Phet, Uttaradit, Phitsanulok, Phichit, and Phetchabun provinces. Temperatures will range from a low of 22 to 24°C to a high of 29 to 31°C, with variable winds blowing at 5 to 15 kilometres per hour.

Heavy rainfall

Northeastern region: Thunderstorms are forecasted in 70% of the area, with heavy rain in certain areas, including Loei, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Maha Sarakham, Roi Et, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, and Ubon Ratchathani provinces. Temperatures will vary between 21 and 25°C and 28 and 32°C, with variable winds at 10 to 20 kilometres per hour.

Central region: Thunderstorms will cover 70% of the area, with heavy rain in specific areas such as Nakhon Sawan, Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Lopburi, Saraburi, Suphan Buri, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Songkhram, and Samut Sakhon provinces. Temperatures will range from 23 to 26°C to 30 to 33°C, with southwest winds blowing at 10 to 20 kilometres per hour.

Eastern region: Thunderstorms are predicted in 80% of the area, with heavy rain in some parts, particularly in Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chon Buri, Rayong, Chanthaburi, and Trat provinces. Temperatures will range from 24 to 26°C to 29 to 33°C, with southwest winds at 15 to 30 kilometres per hour. The sea will have waves around 1 metre high, rising to over 2 metres in thunderstorm areas.

Southern region (east coast): Thunderstorms are expected in 60% of the area, with heavy rain in some parts, including Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Yala, Pattani, and Narathiwat provinces. Temperatures will range from 23 to 25°C to 31 to 34°C, with southwest winds at 15 to 30 kilometres per hour. The sea will have waves around 1 metre high, rising to over 2 metres in thunderstorm areas.

Southern region (west coast): Thunderstorms are forecasted in 40% of the area, with heavy rain in some parts, particularly in Ranong, Phang Nga, Phuket, and Krabi provinces. Temperatures will range from 23 to 25°C to 30 to 33°C, with southwest winds at 15 to 30 kilometres per hour. The sea will have waves around 1 metre high, rising to over 2 metres in thunderstorm areas, reported KhaoSod.

Bangkok and vicinity: Thunderstorms are expected in 70% of the area, with some heavy rain. Temperatures will range from 24 to 26°C to 31 to 33°C, with southwest winds blowing at 10 to 20 kilometres per hour.