Strong convective winds hit Guangzhou again!
There is a recurrence
the possibility of local hail and tornadoes,
Please pay attention to defense!
[Notice of Activation of Emergency Response to Meteorological Disasters]
According to the monitoring of the Municipal Meteorological Observatory, Guangzhou has reached the level II emergency response standard for initiating meteorological disasters (heavy rain). The Municipal Meteorological Disaster Emergency Command decided to start the Guangzhou Meteorological Disaster (Heavy Rain) Level II emergency response from 8:26 on the 30th. Please do a good job of defense according to the provisions of the plan.
At present, the strong squall line is affecting Conghua, Huadu, Baiyun, Huangpu and Zengcheng, and some stations have recorded more than 50 mm of one-hour rainfall and short-term gale force winds of 8-9. It is expected that the squall line will continue to press southward, and there will be new thunderstorms in the direction of Zhaoqing, and strong convective gales will strike again, so we should pay attention to defending against 8 to 11 short-term gales and short-term heavy rainfall, and strong convective weather such as hail and tornadoes may even occur locally, and the strong thunderstorm and gale experience card on the 27th will come again.
At present, there is still some distance between the strong thunderstorm and the central and southern parts of Guangzhou, citizens and friends should pay attention to the weather changes, remember to bring rain gear when going out, and take shelter in a safe room in time in case of sudden weather, and do not hide under trees, sheds and other dangerous places.
As of 11:10 a.m. on April 30,
The early warning situation in various districts of Guangzhou is as follows:
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There are still many strong convective weather during the "May Day" holiday
Entering May,
The thunderstorms show no signs of abating.
According to the forecast of the Meteorological Observatory,
April 29 Night and May 1,
A new round of eastward movement of the upper-air trough will affect Guangdong.
At the same time the cold air goes south,
There was a rainstorm to heavy rainstorm precipitation process in Guangdong,
Thunderstorms are accompanied by short-term heavy precipitation,
8~10 local 11~12 short-term gales
and hail and other severe convective weather,
Don't let your defenses down!
The Guangzhou Municipal Emergency Management Bureau and the Meteorological Bureau issued a "Major Weather Safety Warning Reminder" at 19:17 on April 29:
From April 30th to the "May Day" holiday, there was frequent rainfall in Guangzhou, especially on April 30th, there were heavy rains in Guangzhou, accompanied by 9~11 short-term winds, strong thunder and lightning, local hail and other strong convective weather.
Please pay close attention to weather changes and meteorological warning signals, minimize unnecessary outings during the impact of strong wind and rain weather, iron houses, simple houses, outdoor high-altitude workers should take shelter in a safe place in time, and pay attention to preventing floods, mountain floods, landslides, debris flows, urban and rural waterlogging, short-term gales, lightning strikes, local tornadoes and hail caused by heavy precipitation. Personnel in disaster-prone areas should cooperate in evacuation to ensure safety.
Nansha seven-day weather forecast
Why are there many severe convective weather events recently?
Or outrageously strong?
Throughout the month of April
The theme of Guangdong weather forecast is:
Rain, rain, rain, strong convection.
Hail is frequent
A total of 8 districts appeared hail, with a cumulative number of 14 times, of which the largest hail with a diameter of more than 5 cm occurred in Zengcheng District on the 27th.
Lightning is frequent and dense
The cumulative number of lightning days in the month was 22 days, and the number of ground flashes exceeded 320,000 times, of which the number of ground flashes in the city reached 58,901 times on the 27th, which was the most in a single day, and Shilou Town, Panyu District, recorded the city's largest single ground flash intensity of 188 thousand amperes on the 21st.
Tornadoes are highly destructive
At around 15 o'clock on the 27th, a tornado occurred in Zhongluotan Town, Baiyun District, with a wind force of more than 15, an impact path of 1.7 kilometers, and a maximum impact width of about 280 meters.
According to @Guangzhou Weather, @广东天气科普:
A strong convective weather
Requires energy, water vapor, trigger conditions
Three-way cooperation,
And it happened to be this April
All three conditions are exceptionally good.
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01
The "sub-high" and "south branch trough" are extremely strong and active
It is equivalent to two large pumping machines entrenched in the sea, and the strength of the "secondary high" and the activity of the "south branch trough" represent that the "water vapor" transported to the whole of South China is extremely strong.
02
Temperatures in southern China are unusually high
Since the temperature in South China is significantly higher than normal for the same period of the year, this means that the energy stored in the atmosphere is very high and very unstable.
03
Trigger conditions are frequent and frequent
This April, there are many kinds of "small systems", in addition to the "cold air" that we are familiar with, there are also small systems such as "shear lines" and "shortwave troughs".
According to statistics,
Since the current year (January 1 – April 28)
Unusually high rainfall:
The average rainfall in Guangzhou is 778.6mm.
89.5% more than the same period in normal years,
This is an abnormal 152.7% increase over the same period last year.
Tips
01
Due to the long-term rainfall, the land in Guangzhou is currently soft, and the trees are at risk of lodging, please stay away from the trees when you go out, and avoid parking by the trees.
At present, the water level of the river is high, and there will still be heavy precipitation in the next few days, so citizens living in low-lying areas are requested to prepare for flood prevention and drainage, and cooperate with the staff to move if necessary.
0203
Strong convective weather is still frequent, the risk of short-term gales, tornadoes, lightning strikes, hail is still high, and the risk of collapse of factory sheds and temporary structures is high.
During the "May Day" tourism and Canton Fair, citizens who need to travel should pay attention to the information of the airport and major transportation hubs in advance, and make travel plans in advance.
04
Xiao Nan will show you
"May Day" tour in Nansha丨 Please check the → for the integrated strategy of eating and living
Interview with Nansha Famous School | Revealing the "acceleration" behind the high "processing value" of Nansha Huafu
Source: Guangzhou Weather Weibo, China Guangzhou Release, Nansha Weather
Editor: cyjy
Proofreader: Liu Jiaxin
First instance: Li Xiatong
Second trial: Huang Zengcai
Final review: Ye Pingsheng
Producer: Nansha District Rong Media Center
Submission email: [email protected] (This article was originally published by "Guangzhou Nansha Release", without authorization, any media and public account shall not be reproduced and adapted, welcome to share it with friends.) ）