Group 1 - The Central Meteorological Observatory forecasts high temperatures in regions such as the central and western Huanghuai, southern North China, and Guanzhong in Shaanxi from May 12 to 17, with temperatures exceeding 35 degrees Celsius on May 16 and 17, and local temperatures possibly reaching above 37 degrees Celsius [1] - From May 12, areas including Anyang, Jiaozuo, Xinxiang, Luoyang, Zhengzhou, and Xuchang in Henan, as well as Guanzhong in Shaanxi, will experience light to severe hot wind conditions, primarily affecting the period from May 12 and from May 15 to 17 [1] - The current drought warning indicates severe meteorological drought in provinces like Shaanxi and Henan, with specific areas experiencing extreme drought conditions [1] Group 2 - The water conservancy department is actively supporting drought-affected areas to ensure water supply, enhancing monitoring of rainfall, water conditions, soil moisture, agricultural conditions, and existing water resources [2] - Since the beginning of the year, Shaanxi has seen precipitation nearly 30% below the average, leading to ongoing drought conditions [2] - The Yellow River basin has been experiencing a continuous development of drought, with significant water supply adjustments made to ensure water security in the region [2]

Summary of Key Points Core Viewpoint - The recent heavy rainfall in China's central and eastern regions has set new records for May, with significant impacts expected on agriculture and weather patterns in the coming days [1][12]. Weather Patterns - A large-scale rainfall event occurred over the past two days, breaking single-day precipitation records in 24 stations across Beijing, Hebei, and Shanxi [1]. - The current rainfall is expected to taper off, with most regions experiencing sunny weather for a couple of days before more rain returns [3][5]. - From May 13 to 14, light to moderate rain is forecasted for areas including North China and the eastern Huanghuai region, with potential for severe weather events such as thunderstorms and hail [8]. Agricultural Impact - The period from May 12 to 17 will see high temperatures exceeding 32°C in North China and surrounding areas, with risks of dry hot winds affecting winter wheat production [14][16]. - The dry hot wind conditions pose a significant risk to the critical growth phase of winter wheat, potentially impacting yield due to adverse effects on grain filling [16].

"北方冬麦区大部降水接近常年或偏多，利于补充土壤水分和缓和旱情，气象条件总体利于冬小麦 产量形成。"黄卓说，长江流域油菜产区气温偏高，降水正常或偏少，有利于油菜灌浆成熟和收获晾 晒；西南地区南部油菜陆续成熟，需防范阶段性阴雨天气影响收晒，以防籽粒霉变。 需要注意的是，江淮、江汉、江南、华南东部等地温度高降雨少，部分地区可能出现农业干旱和用 水紧张；5月中下旬黄淮南部、江淮、江汉温度高降雨少，出现阶段性农业干旱和干热风天气风险较 高。 国家气候中心副主任肖潺说，目前，华南西部、西南地区东南部等地仍存在中旱及以上等级气象干 旱，广西局地特旱。 中国气象局统计显示，4月下旬南方多地频繁降水，一定程度上缓和了华南东部等地气象干旱，华 南中旱及以上等级气象干旱面积由4月19日的37万平方公里减少到4月27日的22.6万平方公里，同期特旱 面积由22.6万平方公里下降到8.7万平方公里。 新华社北京4月28日电 新闻分析：近期天气对春耕春种影响几何？ 新华社记者 刘诗平 5月，我国夏收粮油作物将进入产量形成关键期，东北地区将大面积开展春播。近期天气将对春耕 春播和作物生长带来哪些影响？ 国家气象中心副主任黄卓28日在中国 ...

Group 1: April Weather Characteristics - April experienced warm and dry weather, with an average temperature of 12.7°C, which is 1.7°C higher than the historical average and the second highest since 1961 [2] - National average precipitation was 32.7 mm, 13.3% lower than the historical average, with some regions experiencing a decrease in precipitation by 20% to 100% [3] - A nationwide cold wave affected most regions, causing strong winds and severe weather events, with gusts reaching up to 15 levels in some areas [4] Group 2: May Holiday Weather Forecast - The early part of the May holiday is expected to be mostly sunny, with light to moderate rain in some regions, while the latter part will see significant rainfall in the southwest and southern regions [5][6] - Temperature fluctuations are anticipated, with northern areas experiencing a drop of 4-8°C due to cold air, while other regions may be close to or above the historical average [5] Group 3: May Climate Trend Predictions - Precipitation is expected to be above the historical average in northeastern regions and parts of Inner Mongolia, while most other areas will see average to below-average precipitation [7][8] - Temperatures in most regions are projected to be close to or above historical averages, with three cold air events expected to impact northern areas [8] Group 4: Key Areas of Concern for May - Attention is needed for meteorological droughts and dry winds affecting crop growth, particularly in the northwest and central regions [9] - Risks of strong winds, sudden temperature drops, and sandstorms are heightened in northern areas due to frequent cold air activities [9] - Potential for secondary disasters from heavy rainfall and low temperatures in southern and southeastern regions, necessitating monitoring and preparedness [9]