Storms
Another farmer in the hut was injured and taken to hospital, the Xinhua news agency quoted local officials in Anhui province as saying.
The accident happened during a heavy rainstorm in the village of Qiaodong, around 650 kilometres (400 miles) northwest of Shanghai, Xinhua quoted officials from the county government as saying.
During last year's Tropical Storm Cristobal, lightning reached more than 60km (40 miles) up.
Also known as "gigantic jets", these events are just as powerful as cloud-to-ground lightning bolts.
The US team of researchers also took radio measurements of the electrical charge.

Parts of Salzburg and Upper and Lower Austria were hit by heavy rain, hail and winds of up to 100 kilometres per hour (Mon/Tues).
In Lower Austria alone 1,500 firemen were called out.
Rescuers helped an 84-year-old woman in Eggenburg, Lower Austria who had become disoriented in the rain and couldn't find her way back home as well as an Italian family cycling along the Danube River near Wallsee, Lower Austria who had lost their way in the rain.
High wind in Sitzenberg in Tulln district in Lower Austria blew 150 square metres of metal off the framework of a building under construction while lightning in Zwettl district in Lower Austria set two roofs on fire and started a forest fire nearby. It also started a blaze at an apartment in Brand and a set barn on fire in Schöngraben.
A mudslide in Gosau, Upper Austria hit 300 metres of a local highway, carrying some parked cars away and a pregnant woman, 31, was injured when a carriage she was riding in was overturned by a gust of wind in Upper Austria.
Weathermen have said rain will ease off tonight and tomorrow morning and tomorrow afternoon, Thursday and Friday will be mostly sunny before rain returns over the weekend.
Salzburg's northern Flachgau had already been hit by more heavy thunderstorms on Sunday less than two weeks after massive hail storms had left a trail of destruction in the area.
The tragedy occurred on Tuesday evening in the courtyard of a house as some 35 people sat down to eat in Atkulla village, around 135 km (83 miles) from Kolkata (Calcutta).
An eyewitness, Subodh Pramanik, was cited by the paper as saying: "I saw an electric flash roll across the courtyard and I froze."
Health officials said that the force of the single bolt killed eight people instantly. "One died in hospital. Two of the injured have suffered 80% burns and their condition is critical," Dilip Kumar Jha told the paper.
Wet and wild weather that began in the early hours of yesterday morning culminated in a series of lightning strikes in north Invercargill about 9am.
Several houses in Talbot St were struck by bolts, described by one resident as a "fireball".
The lightning, a rare atmospheric phenomenon, wrecked hundreds of televisions, computers, telephones and central heating systems, the paper says. In some households, flames came out of electronic equipment. In others, electric sockets sprang off the wall.

Lightning streaks through a bleak grey sky yesterday - as Britain is drenched in summer downpours.
And the foul conditions are set to continue until early next month, the Met Office warns.
In Cornwall, homes and businesses were left flooded in Lostwithiel, Par and St Blazey. Yachts capsized in Newquay and there was a sevenvehicle smash on the A30 on Bodmin Moor.
Newcastle was braced for two-and-a-half inches of rain yesterday while firefighters across the North East were put on flood alert. North Yorks, Northants, Beds, Cambs, Wilts, Oxford and Essex were also hit by thunderstorms.
The Met Office's Barry Gromett warned it will be wet for another couple of weeks at least.
NASA called off the launch of the space shuttle Endeavour for a third time July 11 after lightning strikes in the Cape Canaveral area prompted the space agency to move the liftoff to July 12. The mission to deliver equipment to the International Space Station was scratched twice in June due to a mysterious launch pad hydrogen gas leak that appears to be resolved.

Rushing water flows down Congdon Street in Providence during Wednesday’s heavy rains.
Severe thunderstorms rumbled into Southern New England beginning at daybreak on Wednesday and continuing at 11 a.m. for a second round, clustering together over the southernmost tip of Rhode Island with wave after wave of heavy rain and lightning strikes.
Roads flooded and left motorists stranded in their swamped cars. Lightning struck houses from Westerly to Coventry. Torrential downpours - - at times about an inch an hour - - overwhelmed drainage systems, forcing street and highway closures in parts of South County. The rain gauges used by engineers at the Department of Transportation showed 4 inches of rain fell in just two hours in Charlestown - - approaching levels of a hundred-year storm, said department spokesman Charles St. Martin.
Amazon's cloud was struck by lightning earlier this week. And that's the truth.
On Wednesday evening at about 6:30pm Pacific time, some Amazon cloud sitters saw their floating servers disappear - and yes, the company blamed the temporary outage on a lightning strike.
According to a web post from the company, the strike zapped a power distribution unit in one of its data centers, taking out server instances in one - and only one - Availability Zone. Amazon's Elastic Compute Cloud (EC2) serves up on-demand processing power from two separate geographic locations - the US and Europe - and each geographic region is split into multiple zones designed never to vanish at the same time.
"A lightning storm caused damage to a single Power Distribution Unit (PDU) in a single Availability Zone," the company said in a web post at 7:33pm. "While most instances were unaffected, a set of racks does not currently have power, so the instances on those racks are down."







Comment: Yesterday we carried this report from the Netherlands. Today, halfway around the globe, we have another report of a fireball hitting homes in New Zealand. In both cases, plugs and sockets were blown out of their fixtures in the walls.
Hmmm....