Earth Syst. Sci. Data, 13, 1233–1249, 2021 https://doi.org/10.5194/essd-13-1233-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Meteorological observations collected during the Storms and Precipitation Across the continental Divide Experiment (SPADE), April–June 2019 Julie M. Thériault1, Stephen J. Déry2, John W. Pomeroy3, Hilary M. Smith1,2,4, Juris Almonte1,2, André Bertoncini3, Robert W. Crawford5, Aurélie Desroches-Lapointe1, Mathieu Lachapelle1, Zen Mariani5, Selina Mitchell2, Jeremy E. Morris2, Charlie Hébert-Pinard1, Peter Rodriguez5, and Hadleigh D. Thompson1 1Department of Earth and Atmospheric Sciences, Université du Québec à Montréal, Montréal, H3C 3P8, Canada 2Environmental Science Program and Natural Resources and Environmental Studies Program, University of Northern British Columbia, Prince George, V2N 4Z9, Canada 3Centre for Hydrology, University of Saskatchewan, Saskatoon, S7N 1K2, Canada 4Department of Environment and Geography, University of Manitoba, Winnipeg, R3T 2N2, Canada 5Environment and Climate Change Canada, Toronto, M3H 5T4, Canada Correspondence: Julie M. Thériault (
[email protected]) Received: 18 June 2020 – Discussion started: 17 October 2020 Revised: 5 February 2021 – Accepted: 8 February 2021 – Published: 24 March 2021 Abstract. The continental divide along the spine of the Canadian Rockies in southwestern Canada is a critical headwater region for hydrological drainages to the Pacific, Arctic, and Atlantic oceans. Major flooding events are typically attributed to heavy precipitation on its eastern side due to upslope (easterly) flows. Precipitation can also occur on the western side of the divide when moisture originating from the Pacific Ocean encounters the west-facing slopes of the Canadian Rockies.