Chinanews.com, Lanzhou, June 11 (Reporter Feng Zhijun, Zhang Jing, Gaoying) On the 11th, Gansu officials held a press release on the investigation and handling of the public safety responsibility incident of the "5.22" Yellow River Stone Forest 100km Cross-Country Race in Jingtai County, Baiyin City, in Lanzhou. meeting.
In the notification, high-impact weather was used as the direct cause of this incident. What is high-impact weather?
Can high-impact weather cause death?
Why was this kind of weather called extreme weather in the initial official announcement?
On May 23, 21 people were killed in the 100-kilometer cross-country race in Baiyin Jingtai, Gansu.
The picture shows the rescue "command center".
(Data Map) Photo by Wei Jianjun
"The so-called high-impact weather refers to weather phenomena that have a significant impact on society, economy, and the environment." At the press conference that day, Liang Xudong, director and researcher of the State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, said that the weather this time was typical Large-scale cold air process, the entire northwestern region has obvious large-scale cooling, precipitation, strong winds and sand and dust weather in some areas. Jingtai County mainly has a maximum precipitation of less than 10 mm, maximum gusts of 6 to 7 and 4°C to 8°C. ℃ cooling, high altitude area gusts can reach 8 to 9 levels.
On the whole, this cold air process is not an extreme weather event, but it is a high-impact weather event for the 4th Yellow River Stone Forest Mountain Marathon 100km Cross-Country Race.
Liang Xudong said that specific to the impact of this event, the main reason is that when some players are in the high altitude stage between check-in point No. 2 and check-in point No. 3, the main force of cold air passes through the contest area, bringing significant cooling, precipitation and strong wind. The body temperature is reduced, as low as -5°C to -3°C.
"The player may have experienced a period of continuous low body temperature without protective measures, resulting in loss of temperature." Liang Xudong analyzed.
Huang Zeyuan, director of the Gansu Provincial Emergency Department and head of the incident investigation team, said that it was called extreme weather in the previous official release because there was indeed super strong wind in the event area on the day of the incident, and there was also a significant drop in temperature. Others said that they were hit by hail.
Because there was no weather station at the stage of the incident, there was neither historical weather data nor relevant data of weather observations on the day. Because the incident happened suddenly, everyone thought it was extreme weather.
Huang Zeyuan said that during the investigation of the investigation team, through field observations and repeated comparisons by experts from the National Meteorological Administration, such a conclusion was accurately obtained by means of estimation and restoration, and it is now classified as high-impact weather.
(Finish)