A search is underway for an American journalist who went missing on a Norwegian glacier at Folgefonna National Park while on a solo backpacking trip, according to his family.

Alec Luhn, 38, was reported missing on Monday to the Norwegian authorities when he did not show up for his flight home to England after leaving for a hike on July 31 in Odda, in southwestern Norway, according to his wife, Veronika Silchenko, who posted on social media urging anyone who may have seen him to get in touch.

Luhn, an award-winning American climate journalist, was on vacation with his family before he left for the hike and shared his location, according to CBS News.

Alec Luhn lives with his wife in London, but he is from Wisconsin. (Getty Images)

“The weather started to get really bad around midnight. At that time, it was not reasonable to continue the search up in the mountains,” Tatjana Knappen of the Western Police District told Norway’s public broadcaster NRK.

A volunteer search and rescue team, police, sniffer dogs and drones renewed the search on Tuesday before it was again suspended due to weather conditions.

The Norwegian Red Cross said search operations had been ongoing throughout Tuesday. It said the search teams were local and familiar with the terrain, but called it particularly challenging due to difficult conditions and demanding weather.