高空擾動 Upper-air disturbance

HKO FB

高空擾動

500 hPa prediction HKO

ECMWF 500hPA prediction . Choose dimension as east asia.

For 19 jan 2026

Himawari 9 realtime infrared image

鄭明典FB 冷高壓

中心氣壓仍維持1070左右,此高壓中心看起來是緩慢往東南方向移動!

但是追蹤低層冷空氣流向,主要的冷空氣受東側大低壓的影響,仍然是偏東出海,預期日、韓會有一波嚴寒的低溫，部分冷空氣往南,中國多數地方都發布寒潮與降溫預警。這一次影響台灣的冷空氣可能要經過黃海、東海,在海面時間長,空氣相對潮濕。但是預期的降雨,還包括冷空氣上方的西風帶來的水氣,時間是20日晚間之後,這部分的水氣才是高山降雨的主要水氣來源。

21/1：

今晨，福建西部、江西南部、广东北部、广西、贵州西南部等地部分地区出现6～10℃降温，广西局地达12～14℃。气温0℃线位于贵州南部、湖南南部至江西中部、浙江北部一带。

气象专家提醒，寒潮天气已接近尾声，但低温状态还将持续一段时间。未来10天，新疆北部、内蒙古、东北地区、华北东部、黄淮、江汉、江淮、江南西北部等地平均气温将较常年同期偏低2～3℃，局地偏低4℃以上。

另一方面，日本,南北韓寒流則剛剛開始

KMA

Severe winter storm in North America: Stratospheric polar vortex , UNRR, NOAA, noaa blog

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