今年第1号台风“洛鞍”生成 外围气流或致粤降水

Core Viewpoint - The first typhoon of the year, "Lohan," has formed east of the Philippines and is expected to strengthen further, potentially bringing weak rainfall and increased humidity to Guangdong due to its peripheral airflow [1]. Group 1: Typhoon Formation and Impact - Typhoon "Lohan" formed on January 15, 2023, making it the earliest typhoon to form in the northwest Pacific and South China Sea since records began [1]. - The historical record shows that the earliest typhoon was "Alice," which formed on January 1, 1979, and the second earliest was "Pabuk," which formed on January 1, 2019 [1]. - Meteorological experts indicate that sea temperature is a key factor for typhoon formation, with a typical threshold of 26°C required for a typhoon to develop and persist [1]. Group 2: Future Projections - The Guangdong Meteorological Department predicts that "Lohan" will move northwest and may linger east of the Philippines, with no direct impact on the sea surface of Guangdong [1]. - The peripheral south winds and humid areas from "Lohan" may lead to weak rainfall, increased humidity, and more cloud cover in coastal regions of Guangdong [1]. - Additionally, a strong cold air mass is expected to affect Guangdong starting the night of January 19, coinciding with the "Great Cold" solar term [2].