Two China Eastern flight attendants and two passengers remained in hospital yesterday after being injured when their plane hit strong turbulence on a flight to Shanghai on Monday night.
One flight attendant suffered a broken nose and the other a broken leg.
The plane dropped 600 meters "over a very short period of time" and jolted violently at least three times about 8:20pm when it was over Zhejiang Province.
The accident is believed to have been caused by the unusual weather pattern which also caused the storm in which seven people died and more than 25 were injured in Shanghai on Monday night.
Premier Wen Jiabao called the city's Party Secretary Chen Liangyu yesterday, sending his condolence and asking the city to do its best to minimize the consequences of the weather.
Technicians worked across the city yesterday to restore power to about 60 places blacked out by the storm. All supplies were restored by 2pm.
On the Huangpu River near the Oriental Pearl TV Tower, divers laid cables across a cargo ship that sank after a collision in the storm.
Salvage work is expected to last another two to three days, but predicted bad weather for the following days may hold up the process, the local Maritime Safety Administration said.
Another storm hit parts of the city last night, but no injuries were reported.
A yellow storm alert issued at 6pm was lifted two hours later. Suburban areas including Qingpu and Minhang districts, as well as Chongming County were affected by the storm for about 20 minutes from about 4pm.
Eight people were injured on the China Eastern flight to Shanghai from Changsha, in Hunan Province.
The airline is now in discussion with insurance companies in Changsha, where the insurance policies of the victims were sold.
Among the four victims still in hospital is a 56-year-old man suffering hypertension and heart disease.
"He appeared normal at first, but first-aid doctors at the airport later found he was vomiting," said Li Jiang, a spokesman for China Eastern Airlines.
Another traveler, a 40-year-old woman, suffered injuries to her waist.
The ship that sank in the Huangpu was loaded with sand when it was caught in the storm on Monday night.
Winds reached 88 kilometers an hour.
The ship had struggled to evade a 3,000-ton empty ship that ran transversely toward it in the heavy rain from the upper reach.
After the collision, the ship sank in minutes.
All six crew members managed to jump overboard and were rescued.
Maritime Safety Administration spokesman Zhou Zhengbao said shipping in the river had been considerably affected because the waterway where the ship went down is rather narrow.
"We have sent two patrol ships and have two hired salvage boats at the scene," he said. "They are directing traffic on the site while making preparation for the lift-up of the sunken ship."
Two large warships from Jiangnan Shipyard Co Ltd successfully passed the area, escorted by a maritime cruise ship yesterday, officials said.
The river 1,000 meters upstream and downstream from the accident site is restricted to one-way traffic to provide space for the salvage work.
The plan is for workers to remove silt and sand from the sunken vessel to reduce its weight before towing it to an anchorage ground near Lujiazui, officials said.
Yesterday, the daily high temperature in the city dropped to 34 degrees Celsius, the first time since last Saturday that the high has fallen below 35 degrees.
The cloud and showers in the afternoon helped cool down the city a little bit, meteorologists said.
The daily high today is expected to reach 35 degrees again under the control of a warm air mass, and the low should be 27 degrees, according to Shanghai Meteorological Bureau.
The mercury will be on a steady rise to reach 38 degrees on Saturday, the bureau forecast.