Siri Margrethe Kalvig (born 6 November 1970 in Stavanger)[1] is the founder and former managing director of the weather forecasting company Storm Weather Center, which was established in 1997.

[2][3] Before that, she managed the Storm Weather Center's Stavanger office.

The title of her master's thesis in meteorology was "Lokal- og mikrometeorologi (Vindstress på sjøis i Barentshavet)" (English: Local and micrometeorology (Wind stress on sea ice in the Barents sea)).

Kalvig won Venstres miljøpris (English: Venstre's environmental award) in 2008[5] She was awarded this year's professional prize during the Gullruten 2009 for "her professional strength, and the dissemination of her profession on several platforms".

[7] Kalvig has previously said that her commitment to the environment comes from her time in Unge Venstre during the 1980s.