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Hangzhou Meteorological Observatory issued a yellow warning signal for fog at 21:08: It is expected that there will be dense fog with visibility less than 500 meters in the main urban area and some streets in Qiantang District from tonight to tomorrow morning.
Previous news. Today, visibility in Hangzhou is greatly reduced, and the sky is gray. That's right, it's the worst weather of winter - haze has appeared again, and the city meteorological station has the latest reminder!This weekend is the New Year's Day holiday, the cold air is ready to go, the temperature is going to drop to freezing, the north wind and rain may also arrive, please take precautions in advance!
The worst weather of winter is coming.
The latest reminder from the Municipal Meteorological Observatory!
Affected by the easterly airflow, the water vapor began to increase last night, and at 21:15 last night (December 27), the Hangzhou Meteorological Observatory issued a yellow warning signal for heavy fog, and there was a dense fog with visibility less than 500 meters in some areas.
In the morning, as the humidity decreases, the fog gradually dissipates, but it still feels like the sky is gray, which is the haze. Haze and fog are usually converted to each other, and if the air humidity increases, haze can be converted to fog and vice versa.
Photo by Jiang Zhiqing.
Photo by Zhejiang Weather.
Haze occurs due to the increase in particulate matter suspended in the atmosphere, and the failure of particulate matter to disperse due to calm weather.
When the weather is calm, there is no rain in the first place, which prevents suspended particulate matter from being settled by rainThere is also no strong wind when it is still and there is no way to disperse the suspended particulate matter horizontallyAt rest, there is often an inversion layer in the atmosphere, which prevents suspended particles from spreading vertically.
Tips: Haze has a great impact on human health, it is recommended to wear a mask when going out, and people with respiratory diseases and bronchitis and other diseases should minimize the time spent outdoors.
Recently, the air quality has been poor, and morning exercise is not recommended to avoid inhaling too many harmful substances.
Atmospheric visibility is reduced, which is prone to road congestion and traffic accidents, so be extra careful and pay attention to safety when passing on the road.
Cold air arrived during the New Year's Day holiday.
A day may go through spring, autumn and winter.
As the weather warms up, the morning minimum temperature is increasing day by day, and the minimum temperature is from the 25th to 19 26-08 27 15, the lowest temperature to this morning is 37, the warming trend is obvious, today's maximum daytime temperature can reach 15, plus there is sunshine, it can be said to be a "warm" winter.
The warmer continues, and the maximum temperature rises to 19-20 the day after tomorrow (30th), and you can experience spring, autumn and winter in one day.
Photo by Jiang Zhiqing.
But after all, in the winter weather background, the cold air is frequently affected, especially during the New Year's Day holiday, the 30-31st will be affected by the cold air, there will be a significant cooling process, north wind increase and weak precipitation. However, the water vapor conditions of the whole layer are not very good, and for the main urban area, it is basically cloudy to overcast weather, and there is not much precipitation.
In general, the weather will continue to be fine in the coming week, and the meteorological fire danger level is high, so we should pay attention to the safety of fire and electricity, and at the same time, we should be more deficient in water in winter, so we should replenish water to the body in time.
The cooling range of this cold air process is about 4-6, plus the weather is fine, the radiation cooling effect, the minimum temperature will return to about 0, although there is no low temperature in the morning after the last cold wave, but it can not be underestimated, everyone can wear hats, scarves, masks, etc. to keep warm.
Weather trend forecasts.
29 (Friday): sunny to cloudy, foggy in some urban areas in the morning, cloudy to overcast at night, 4 14, east wind level 3;
30 (Saturday): Cloudy to overcast, 6 19, north wind 3 4;
31 (Sunday): Cloudy to clear, 5 14, northwest wind 4 5 gusts 6;
1 (Monday): Sunny to cloudy, 0 10, northeast wind 3 4;
2 (Tuesday): Sunny to cloudy, 0 14, east wind 3 4;
3 (Wednesday): Sunny to cloudy, 3 14, northeast wind level 3;
The Hangzhou Meteorological Observatory released it at 11 o'clock on December 28.