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Korean-language social media posts have repeatedly shared the false claim that frost was detected on South Korea's highest peak Mount Halla in August 2022, citing a tweet from the Korea Meteorological Administration (KMA). However, the KMA tweet shared in the posts was actually published in October 2021. A KMA spokesperson told AFP that the weather agency had not recently detected frost on Mount Halla, and the area was hit by heavy rains in August 2022. Yesterday's situation on Mount Halla, reads the Korean-language claim shared here on Oasis, a South Korean tabloid news website, on August 17. The post includes a screenshot of a tweet from the KMA stamped with a date that reads: 1 day ago. The tweet reads: Ground cooling overnight dropped temperatures to around 0 degrees Celsius, and in some areas the first frost and ice of the year have been detected. This morning, rime ice was found settled on Mount Halla. Rime ice refers to 'frost settled on trees and vegetation like fallen snow.' Be mindful that the cold weather can affect your health and crops. Screenshot of the false post, captured on August 19, 2022. Mount Halla is the highest peak in South Korea located in the country's southernmost Jeju Island. The post from Oasis was also shared in Facebook posts here , here , here and here . Several users that left comments in the posts appeared to be misled by the claim. One comment read: Frost? In this weather? Another online user said: Heavy rain, frost in the summer, the weather is going crazy. The claim, however, is false. Old tweet A keyword search on Google found the corresponding tweet posted by the KMA on October 17, 2021. Both the tweet and the images included match those shared in the misleading online posts. #한라산상고대 밤사이 지표면 냉각으로 아침 기온이 0도 내외로 떨어져 일부지역에 첫서리와 첫얼음이 관측된 곳이 있습니다. 오늘 아침 한라산에 상고대가 관측되었습니다. 상고대는 나무나 풀에 내려 눈처럼 된 서리를 뜻합니다. 추운날씨, 건강관리 및 농작물 관리 등에 주의하세요⚠️ pic.twitter.com/l0JVIVLjnU — 기상청 (@kma_skylove) October 17, 2021 Below is a screenshot comparison of one of the misleading posts (left) and the original KMA tweet (right) with the tweet date marked in blue: Local news organisations at the time also reported about the frost found in Mount Halla in October 2021, including here and here . 'Unlikely conditions for frost' A KMA spokesperson from the agency's Jeju branch told AFP that the claim was not true, noting temperatures and weather conditions in the mountain. There is no likelihood that the year's first rime ice or frost has formed on Mount Halla, the spokesperson said on August 19. On Mount Halla's Witse Oreum and Baekrokdam, where we operate automated weather stations, temperatures stood at 18.3 degrees and 17.4 degrees Celsius, which are not conditions in which ice can form. The spokesperson added, On the 17th, around 217 millilitres of rainfall were detected on Mount Halla, so ice cannot have formed in these conditions. Mount Halla was hit by around 300 millilitres of rainfall per hour on August 17, and damage from heavy rains was reported in various parts of Jeju Island, according to local reports here and here . AFP could not find any credible reports or announcements about frost, ice or snowfall being detected in Jeju Island in August.
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