Outbreaks of summer thunderstorms remain over the upper country with possible thunderstorms, gusty winds and hail in following regions:
North: Uttaradit, Sukhothai, Pichit, Phitsanulok and Phetchabun
Central: Chai Nat, Nakhon Sawan, Uthai Thani, Lop Buri, Saraburi, Phra Nakhon Si Ayutthaya, Kanchanaburi and Ratchaburi including Bangkok and its vicinity.
Northeast: Udon Thani, Nong Kai, Bueng Kan, Sakon Nakhon, Nakhon Phanom, Mukdahan, Kalasin, Maha Sarakham, Roi Et, Khon Kaen, Chaiyaphum, and Nakhon Ratchasima.
East: Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chon Buri and Rayong.
During 19-20 March, outbreaks of summer thunderstorms possibly decrease in the North and the Central while they remain in the Northeast and the East.
People stay safe and keep off outdoor places due to the severe weather conditions.
Continuous extension of high pressure remains the upper Northeast, and the westerly waves covers the North and the upper Northeast of the country forcing up to summer thunderstorm outbreaks.
The advisory is in effect on 19 Mach 2017 at 5.00 a.m.
The next issue will be at 11.00 a.m., 19 March 2017
(Signed) Wanchai Sakudomchai
(Mr. Wanchai Sakudomchai)
Thai Meteorological Department
Article source: http://www.tmd.go.th/en/warningwindow.php?wID=5758