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The International Snow Science Workshop (ISSW) exists to facilitate the interdisciplinary exchange of ideas and experiences between snow science researchers and practitioners. The motto of the International Snow Science Workshop is "A Merging of Theory and Practice". ISSW hosts a biennial conference in North America and Europe that brings together researchers and practitioners from all over the world. ISSWs are geographically rotated between USA-Europe-Canada.

The next ISSW conference, ISSW 2023, will be held in Bend, Oregon, USA October 8 - 13, 2023.

ISSW 2024 will be held in Tromsø, Norway September 23-27, 2024.

ISSW 2026 will be held in Whistler, British Columbia, Canada. September 28-October 2, 2026.


ISSW 2028 will be held in the USA - Host site to be decided. . 

ISSW 2030 will be held in Europe - Host site to be decided.


ISSWs are usually awarded 4 years in advance; however, a proposal can be considered earlier. 

Groups interested in hosting a future ISSW are invited to contact the Secretary, Rich Marriott, at:

History of the ISSW

The International Snow Science Workshop has its roots in meetings held informally in the 50s and early 60's when practitioners realized the importance of interdisciplinary exchange of ideas and experiences. The first meeting that brought together government agencies, industries, and users dedicated both to snow and avalanche science was held in April, 1960 at Santa Fe, New Mexico following the 28th Annual Meeting of the Western Snow Conference. About 30 participants spent two days discussing avalanche control methods led, in part, by Monty Atwater.


In 1969, the Snow and Ice Subcommittee of the Associate Committee on Geotechnical Research of the National Research Council of Canada added a meeting on avalanches to one of its periodic conferences attracting 188 participants and 12 papers. In 1971, Dr. Ed LaChapelle organized an informal gathering in Seattle that encouraged exchanges between researchers and practitioners. This led to a number of meetings in the US and Canada in the 70s, including Workshops in Banff (1976) and Vancouver (1980) that that were increasingly attended and somewhat more formal.

In 1982, the snow study group at Montana State University organised a meeting that emphasised the importance of interaction and exchanges between practitioners and researchers. This group was chaired by John Montagne who used special invitations to bring together scientists and practical workers in snow and avalanches. This group created the title "International Snow Science Workshop." In addition, they coined the motto of the Workshop "A Merging of Theory and Practice," which continues to this day.


At ISSW in 1982, an informal meeting of interested parties was held during the conference to discuss the possibilities of holding ISSW on a regular basis. Aspen, Colorado and Seattle, Washington were offered as possible sites in 1984.

ISSW steering committee is born

Two years later, in Aspen, Colorado, the next ISSW was presented. At this meeting the ISSW Steering Committee was created to provide guidance for future ISSWs. A biennial rotation of the Workshop through the western North American mountain region was established with every 3rd meeting in Canada. Two representatives were appointed from each of four US regions and two Canadian regions. Subsequently, the Chairman of each ISSW has become chairman of the Steering Committee at the next ISSW and then remained a voting member, thereafter. In addition, there is a Secretary of the Steering Committee which helps provide a point of contact and helps maintain continuity in the organization. John Montagne served as Secretary from the inception until 2000 when Rich Marriott accepted the position and continues to serve as Secretary.


The Steering Committee has maintained an informal organization, meeting only at ISSWs, primarily to consider bids from future host sites. Over the years the attendance has grown from 220 people including 10 foreign participants in Bozeman to over 800 people representing 20 countries in Whistler, BC in 2008. In 2009, the European ISSW was held in Davos, Switzerland. This meeting was great success attracting over 550 participants from 24 countries. In 2012 ISSW was held for the first time in Alaska in Anchorage.

At the ISSW in 2010 at Squaw Valley, California, the Steering Committee approved another European ISSW to take place in France at Grenoble.


The Steering Committee has evolved a series of requirements for future hosts and hosting sites including affordability, minimum capacity of facilities, and the necessity to encourage the participation of practitioners in the presentations. The Steering Committee decided in 2002 to try to increase its profile at ISSWs and on the Internet to encourage a continuing interest from future hosting sites and to provide a permanent link to past ISSWs and past ISSW presentations. This led to the current ISSW Steering Committee site containing the history of earlier ISSWs and information on future Workshops. In addition, the Committee attempts to have sites scheduled approximately 4 to 8 years in advance.

The next ISSW Conference, ISSW 2023 (previously named ISSW 2022), will be held in Bend, Oregon from October 8 - 13, 2023.

ISSW 2024 will be held in Tromsø, Norway September 23-27, 2024.

ISSW 2026 will be held in Whistler, British Columbia, Canada. September 28-October 2, 2026.

In 2010, Professor Stephan Custer of Montana State University (MSU) proposed to the Steering Committee that the University undertake to provide all of the ISSW Proceedings digitally on the Internet, hosted by the MSU Digital Library. In teleconferences with the Secretary of ISSW, it was proposed that MSU would undertake a two phase process: first developing a standard format for a fully searchable database presented in PDF format and modifying existing Proceedings that are already in digital format. And a second phase requiring the scanning of earlier hard copy Proceedings into searchable pdf format and presenting them using the database format. In March 2012, the database format was finalized and the proceedings are now online at:

Special thanks to John Montagne and Peter Schaerer for information on the early meetings - much of which was taken from their paper in the Proceedings of the ISSW 1994, in Snowbird, I.S.S.W Past, Present, and Future. Additional information was taken from "The History of ISSW and the ISSW Steering Committee", by Richard Marriott in the Proceedings of ISSW 2006, in Telluride, Colorado.

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