Summary of Key Points Core Viewpoint - A new round of cold air is expected to impact the central and eastern regions of China from January 25 to 27, bringing temperature drops of 3 to 6 degrees Celsius, with local areas experiencing drops exceeding 8 degrees Celsius [1]. Weather Forecast - From January 25, most of Shaanxi province will experience cloudy to overcast conditions, with scattered light snow in northern Shaanxi (0-2 mm) and rain-snow mixtures in the Guanzhong area (0-3 mm) [7]. - On January 26, cloudy to sunny conditions are expected, with light snow or rain-snow mixtures in southern Shaanxi [7]. - January 27 will see a transition from cloudy to sunny weather across the province [7]. - A blue wind warning has been issued for several districts in Shaanxi, with average wind speeds expected to reach 5 levels (8.0-10.7 m/s) and gusts exceeding 6 levels (13.9-17.1 m/s) [8]. - A yellow warning for road icing has been issued, predicting road surface temperatures below 0°C with precipitation, potentially affecting traffic in various districts [10]. - The forecast indicates that from January 29 to 30, another weather event involving rain and snow is anticipated [16]. Environmental Conditions - Recent atmospheric diffusion conditions are generally average, leading to light to moderate air pollution in the region [16].

Group 1 - The majority of China is experiencing a warming trend today, with significant temperature increases especially in southern regions, where temperatures may exceed 20°C [2][3] - However, the lowest temperatures are rising slowly, leading to a notable day-night temperature difference, with some areas in the middle and lower reaches of the Yangtze River experiencing differences over 15°C [2] - A new cold air mass is expected to arrive from January 25 to 27, bringing a temperature drop of 4 to 6°C, and in some areas, up to 8°C [2][9] Group 2 - Rain and snow are forecasted for northern regions, with snow expected in areas such as North China, Northeast China, and parts of the Huanghuai region from January 25 to 27 [2][9] - Specific areas like southern Henan and western Hubei may experience freezing rain during this period [2][5] - The Central Meteorological Observatory predicts small snow or sleet in parts of Xinjiang, Tibet, and other regions today, with some areas experiencing moderate snow [3][5]

Core Insights - A significant cold air mass is expected to bring widespread rain and snow across the province from December 30, 2025, to January 1, 2026, with localized heavy snowfall [1] - The temperature is projected to drop significantly, with average daily temperatures decreasing by 4 to 6°C in most areas, and up to 10°C in some regions [1] Weather Impact on Agriculture - The rain and snow will help replenish soil moisture in the winter wheat areas of Guanzhong and southern Shaanxi, alleviating surface drought conditions and aiding root insulation for safe overwintering [1] - However, the combination of cold temperatures and strong winds may cause frost damage to overgrown and late-sown weak seedlings [2] Risks to Infrastructure - There is a high risk of snow disasters or low-temperature disasters affecting facility agriculture, particularly in Guanzhong and southern Shaanxi [2] - The cold and snowy weather is expected to impact most roads and railways, increasing the risk of slippery conditions and low visibility, particularly in southern Shaanxi, Guanzhong, and the Qinba Mountains [2] - Energy departments are advised to prepare for energy reserves and enhance monitoring and maintenance of power lines in affected areas [2]

Group 1 - A significant cold air mass is affecting China from north to south, leading to a sharp drop in temperatures across the central and eastern regions, bringing temperatures back to levels typical for this time of year [1] - The latest forecast from the Shaanxi Meteorological Station indicates that there will be rain and snow in northern Shaanxi, with snowfall already reported in the northern region and light rain in the southern areas [1] - Starting from December 19, snowfall has been observed on the G20 Qingyin Expressway from Dingbian to Jingbian, prompting the Shaanxi Traffic Control Company to activate a Level III emergency response for snow removal and road maintenance [3] Group 2 - The forecast for the week in Xi'an shows predominantly cloudy to overcast weather, with maximum temperatures ranging from 7 to 10 degrees Celsius [11][12] - Specific daily weather forecasts indicate a mix of cloudy and sunny conditions, with temperatures fluctuating between -2 and 10 degrees Celsius throughout the week, and potential for scattered rain and snow in high-altitude areas [13] - Strong winds of around Level 4 are expected in many areas, with gusts reaching Level 7, which will help clear air pollution but may pose risks to outdoor structures and items [13]