78 people killed in tornado in Jiangsu: Reminder on how to escape from typhoon

On June 23, 2016, tornadoes and hailstorms broke out in some areas of Funing County and Sheyang County in Yancheng City, Jiangsu Province, causing damage to multiple towns and villages. A large number of houses, factories, schools, and classrooms collapsed, and some road traffic was blocked. As of 20:00 on the 23rd, 78 people have died and about 500 people have been injured. The Ministry of Civil Affairs of China launched an emergency response at 20:00 yesterday, and a State Council working group composed of five ministries including the Ministry of Civil Affairs rushed to the disaster area overnight to guide and assist local rescue work.

Mourning in silence for the victims and praying for the survivors!!!

1. Is there a forecast for this tornado?
The public has been reminded to guard against strong lightning gusts. According to Han Guirong, a forecaster from Jiangsu Provincial Meteorological Observatory, the Huang Huai region is located on the northwest edge of the subtropical high, with high temperatures, high humidity, and good convective potential. At 500 hPa, there is a cold vortex moving southward in conjunction with the eastward movement of the trough. At 700 and 850 hPa, there is a low vortex shear moving eastward, with a cyclone on the ground and cold air in the rear. The low-level southwest jet stream and the mid to high-level northwest jet stream have strong wind shear. When strong wind direction and speed converge on the ground, tornadoes are generated.
2. How to monitor and forecast tornadoes?
Combining satellites and radar can provide early warning. Tornadoes have a small range and short lifespan, which poses great difficulties for scientific research and forecasting. However, there may also be some noteworthy weather phenomena and characteristics before the arrival of tornadoes. For example, before the formation of tornadoes, the atmosphere was very unstable, cloud convection was strong, air pressure decreased significantly, and the bottom of the clouds moved particularly strongly, which is helpful for predicting tornadoes. In addition, meteorological radar can detect thunderstorm clouds up to 300 kilometers away, and once hook shaped echoes of tornadoes are detected in the radar, an alert can be issued. But there are also some tornadoes where the hook shaped echoes are not obvious. Therefore, using a combination of radar and visual methods is often more reliable. If satellites and radar are combined, they can continuously observe the changes of tornadoes and issue warnings half an hour before the tornado occurs.

upHaifengyun Meteorological Instrument Co., Ltd. has transferred the production of wind speed detection equipment, including FYF-1 lightweight three cup anemometer, FYF-2 wind speed alarm, FYF digital anemometer, FYF-A intelligent anemometer, and FYF-B digital anemometer (with transmitter); FYF-3 wind direction and speed transmitter; Pressure instruments: DYM3 air box pressure gauge, DYM-4J precision air box pressure gauge, FYP-1 digital precision pressure gauge, FYP-2 digital pressure altimeter; Temperature and humidity measuring instruments: FYTH-1 digital temperature and humidity meter, FYTH-2 intelligent temperature and humidity recorder, FYTH-3 multifunctional temperature and humidity meter recorder; Comprehensive instruments: FY-A meteorological five elements, etc. The product is widely used in agriculture, forestry, meteorology, railway, aviation, soil, water conservancy, environment, agricultural product testing and other related fields, and has been highly praised by users