Integrated Canadian Hail Database

This dataset combines crowd-sourced hail reports in Canada between 2005 and 2024 from two internal sources collated by Environment and Climate Change Canada. Time is in UTC. See Provinces and territories of Canada - Wikipedia for province codes. Common reference objects are used to compare with the diameter of the largest hail stone in vicinity. Modifications from 2005-2022 v1.0.0:- Extension of the database from 2005-2022 to 2005-2024. - Inclusion of METAR/SPECI hail/graupel reports (TSGR and TSGS) for 2023-2024 (source: Iowa Environmental Mesonet). Notes:1. There are no (exact) duplicated entries, and the time, location and hail size were checked, but they were not validated against external data sources. 2. One novelty is the systematic addition of METAR/SPECI reports with the extraction of the hail size from the RMK (71 reports, most provide unrealistically small hail diameter and the diameter is not always consistent with the GS/GR code, the default is GS “small hail/graupel” = 3mm and GR “hail” = 10mm if the diameter is not included in RMK). 3. There will be more frequent data from Quebec province than in 2005-2022 because of a better filtering of the French word for hail (grêle). So please do not use the data for studying climatic trends (plus all the usual warnings about using crowd-sourced data).