Three people were killed in the storms and 542 houses were damaged.
In Nan, a summer storm pounded Pua, Chiang Klang and Tha Wang Pha districts from Friday night until early Saturday morning. It brought heavy rain, hail and strong winds that blew away roofs of many houses in the three districts of this northern province.
Narong Insor, head of Nan's disaster prevention and mitigation office, on Saturday led officials to survey damage in the storm-hit areas. More than 50 houses in the three districts were damaged, with no injuries or deaths.
Authorities would set aside a budget for the repairs of the damaged houses, said Mr Narong.
In Sakon Nakhon, a thunderstorm struck 11 districts of this northeastern provinces on Friday night, damaging 261 houses and schools.
The 11 affected districts included Muang, Akat Amnuai, Sawang Daen Din, Waritchaphum, Wanon Niwat, Phang Khon, Kut Bak, Phon Na Kaeo, Charoen Sin, Tao Ngoi and Phu Phan.
There were two deaths reported in Kut Bak and Phu Phan districts after big trees, uprooted by storms, fell on their houses.
Local residents said heavy rain and hailstones of sizes ranging from one centimetre in diameter to the size of a fist pounded Charoen Sin district while they were sleeping late Friday night. Several vehicles were hit by the hailstones.
Strong winds also knocked down several roadside big trees that fell on power lines on a section of Road No.213 along the Sakon Nakhon-Kalasin route in Sakon Nakhon's Muang district on Friday, causing blackouts in tambon Huay Yang and tambon Pangkwang.
The incident also blocked traffic flow on the route for more than two hours
In Kalasin, a summer storm and hailstones ravaged four districts in this northeastern province, damaging 181 houses and farmland on Friday night. There were no reports of deaths or injuries.
In Kham Muang district, a total of 125 houses were damaged. The other affected areas were Khong Chai, Nong Kung Si, and Yang Talat districts.
Kalasin Governor Winai Witthayanukul said he has ordered district authorities to work closely with local administration organisations to survey the damage in the affected areas and reported to the province so assistance would be given.
He advised local residents to closely monitor weather forecasts and be on alert for the danger caused by storms, heavy downpours and thunderbolts during this period.
In Nakhon Phanom, a summer storm and gusty winds hit three districts in this northeastern province for over three hours on Friday, uprooting many trees and damaging over 100 houses.
Provincial authorities have set up a coordinating centre in the affected areas to provide assistance to people around the clock.
In Muang district, a 56-year-old man was killed when he was hit by a thunderbolt in his paddy field in tambon Tha Kho on Friday, said Pol Capt Pongsak Phiewpui, a deputy investigation chief at Muang district police.
The victim suffered burns after being hit by the thunderbolt as he sought shelter under a big tree in his paddy field.
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