Author: Liu Yue, Dai Shuairu, Zhang Dandan.
Reaching the level of blizzard, it is expected that there will be snowfall in Jishou, Guzhang, and Xiangxi High-tech Zone in the future, and a red warning signal for blizzard will be issued! At 23 o'clock on the evening of February 3, the meteorological observatory in Xiangxi Tujia and Miao Autonomous Prefecture in Hunan Province was brightly lit, and Wang Jiayun, a young forecaster, was staring at the radar map while tapping on the keyboard quickly.
At the same time, the ** in the duty room has also become a "** bell ringing one after another."
Hello, at present, the heavy snowfall echo is mainly located in the central and southern parts of Jishou City, Guzhang County and Longshan County in our state, and it is expected that the echo will move to the northeast in the next 2 hours, please take precautions! Feng Panpan, a forecaster on the side, was also busy carrying out call services for local departments.
Affected by the high-altitude trough, warm and humid airflow and cold air on the ground, from February 3 to 4, Xiangxi Prefecture ushered in the strongest low-temperature rain and snow freezing weather process this year, with heavy snowfall to heavy snowfall in the state, serious snow and road ice in many places, snow depth in urban areas up to 9 cm, and the minimum temperature in towns and villages dropped to -64℃。
Before the rain and snow came, the Xiangxi Meteorological Bureau carefully deployed, strengthened research and judgment, and the leadership team took the lead in sticking to and commanding from the front.
The time pointer was set back to January 30, after consulting with the Provincial Meteorological Observatory and analyzing the meteorological data, the Provincial Meteorological Observatory made "February 2-6 There was a continuous low-temperature rain and snow freezing process in the state", but the process has the characteristics of obvious freezing rain, long duration, complex rain and snow phase, and large cumulative rainfall. When is the main time slot? How to judge the drop area?
Xiangxi is located in the mountainous area, the terrain is complex, the process is the Spring Festival, different weather phenomena have different impacts on traffic, the departments need to take different preventive measures, how to make timed, fixed-point, qualitative, quantitative accurate forecasts, to provide refined services for relevant departments has become the focus and difficulty of the forecasters' analysis and discussion.
On the 2nd, the upper-air trough deepened and moved eastward, the 700 hPa jet stream was obvious, the warm and humid airflow climbed on the cold pad, the temperature near the surface dropped below zero at night, and there was a warm inversion layer in the middle layer, which was very conducive to the occurrence of freezing rain. On the night of the 3rd, it turned to a cold inversion layer, and pure snow was considered. After repeated analysis, the forecasters came to the conclusion that "there was light rain during the daytime on the 2nd, local moderate rain, sleet and freezing in high-altitude areas, accompanied by road icing, heavy snow to blizzard during the day from the evening of February 3 to the day of the 4th, local heavy snowfall, and heavy snowfall mainly from 22 o'clock on the 3rd to 08 o'clock on the 4th".
In the forecast, the local heavy snowfall should indicate that it is the north, and emphasize the impact that rain, snow and freezing weather may have on agriculture, electricity, transportation and other industries, so as to help relevant departments and the public to take precautions in a targeted manner. When forecaster Luo Xiao was making service materials, Zheng Fengchun, a member of the party group and deputy director in charge of business of the State Meteorological Bureau, reviewed it word by word on the side and proposed amendments.
The level of granularity of the forecast material is related to the effectiveness of our services, and needs to be considered word by word. Zheng Fengchun teaches forecasters.
The forecast was finalized after being reviewed by the director and bureau leaders, and was immediately sent to local party and government leaders, departments, and townships. According to the forecast and weather situation, the Office of the State Disaster Reduction Committee launched an emergency response to the disaster level of low temperature, rain, snow and ice on February 1, and all departments at all levels across the state quickly entered the emergency state, focusing on the work goal of "ensuring safety, ensuring smooth traffic, protecting people's livelihood, and ensuring key points", and all the work of prevention and rescue was carried out in an orderly and effective manner.
In line with the forecast, on the 2nd, there was freezing in the high-altitude areas of many counties and cities in the state, heavy snowfall occurred on the afternoon of the 3rd, and the intensity continued to increase at night, and the state and county meteorological departments also ushered in the most tense moment, keeping an eye on the actual changes, compiling meteorological information bulletins, issuing early warnings, measuring and counting the ...... of snow depthThe state's meteorological departments worked together and worked all night on the front line of the business.
In the process, the state meteorological observatory carried out the "631" progressive meteorological early warning service, and issued a total of 11 early warning signals such as heavy snowfall and road ice, covering more than 50,000 people. Affected by the rain, snow and freezing weather, the traffic in many places in the state was seriously blocked that night, and the public security, transportation, traffic police, highways and other departments were dispatched urgently to carry out snow removal and rescue. Luxi County for more than 3,000 stranded passengers to provide parking lots and warm security services, Fenghuang County leaders and relevant departments on-site dispatch of emergency supplies to ensure that due to low temperature, rain and snow weather stranded on the highway to send instant noodles, hot water and other materials, to ensure that food reserves, hot water, heating and warmth in place, the state highway department dispatched snow shovels and snow melting agent spreaders, the use of people to remove ice and snow in a non-stop way, to carry out anti-freezing and anti-skid emergency operations, to ensure that the road is timely and smooth, Public travel safety.
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Edited by Li Aijia, Zhou Dengyou, Huang Shasha.
Reviewed by Shang Xin Wang Xiangyuan.
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