北京又现冰雹？气象部门解读背后原因

Group 1 - A strong convective weather event occurred in Beijing on the night of September 13, resulting in thunderstorms and hail, with some areas experiencing significant accumulation of hail, leading to a phenomenon referred to as "Ice Age" by netizens [1][2] - The average rainfall in Beijing from 16:00 on September 13 to 02:00 on September 14 was 6.8 millimeters, with the maximum rainfall recorded at 42.5 millimeters in Mentougou [1] - The weather conditions leading to this event included high temperatures in early September, creating favorable low-level warm and humid conditions, combined with the influence of cold air from above, resulting in unstable atmospheric layering conducive to severe convective weather [2] Group 2 - The convective cloud system intensified as it moved from mountainous areas to the plains, forming a "supercell storm" that is prone to producing hail, strong winds, and localized heavy rainfall [2] - Meteorological forecasts indicate that another rainfall event is expected in Beijing from the morning to midnight of September 15, with light thunderstorms and varying rainfall intensities across the city [2]