据中央气象台网站消息，昨日，西藏、四川、陕西、云南等地出现中雨。预计13日至16日，南方地区有降雨和强对 流天气过程，关注局地强降雨可能引发的次生灾害；同时，华北北部、内蒙古东部、东北地区等地有阵雨天气，华 北东部等地关注局地强对流天气危害。另外，华北南部、黄淮中西部等地晴热温高，关注冬小麦干热风灾害风险。 昨日西藏四川陕西云南等地出现降雨 13至16日，西南地区东部、江汉、江南、华南西部等地部分地区将有中到大雨，局地暴雨或大暴雨，伴有短时强降 水雷暴大风等强对流天气。同时，华北北部、内蒙古东部、东北地区等地有小到中雨或雷阵雨，局地大雨；13至14 日，华北东部等地伴有短时强降水、雷暴大风或冰雹等强对流天气。 华北黄淮部分地区有高温天气发展 昨日8时至今日6时，西藏东部、四川北部、陕西西南部、云南西部及海南岛南部等地部分地区出现中雨，局地大 雨，海南岛三亚局地暴雨(50～78毫米)。 13日起，黄淮中西部、华北南部及陕西关中等地部分地区将出现高温天气，受两股弱冷空气前后影响，18日前高温 范围较小且多变，预计19-20日，高温强度增强、范围显著扩大；上述部分地区的冬麦区将出现3-5天明显干热风天 气。 新疆东 ...

Summary of Key Points Core Viewpoint - The weather forecast for Hangzhou during the "May Day" holiday indicates mostly sunny weather with limited rainfall, but a significant rain event is expected on the night of May 4 to May 5, which may include strong convective weather [1] Group 1: Weather Conditions - The highest temperatures during the first half of the holiday are expected to exceed 30°C, with a notable rise to between 33°C and 36°C on May 2 and 3 [1] - Historical data shows that only in 1988, 1997, and 2020 did temperatures exceed 35°C during the same period, with the highest recorded temperature being 36.2°C on May 4, 2020 [1] Group 2: Safety and Precautions - Citizens and tourists are advised to take precautions against heat, including hydration and sun protection, due to high temperatures [2] - The meteorological fire risk level is high before May 4, necessitating caution with electricity and fire usage, especially in forest and scenic areas [2] - Travelers to regions expecting heavy rain and strong convective weather should plan their itineraries accordingly [2]