Climate Change Canada - Decreasing Extreme Rainfall Trends at 220 Weather Stations - IDF Curve Updates

There is less extreme rainfall observed at hundreds of climate stations across Canada. Therefore based on Environment Canada data, storms are not more severe, and updating Intensity-Duration-Frequency curves is not required in most areas. The map below shows the short duration rainfall frequency trends.

Canadian Extreme Rainfall Trends - 15 Minute Duration
(click on 'dot' symbol for climate station name)

15 Minute Rainfall Extreme Data Trends

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Extreme rainfall trends in Canada (Environment Canada Engineering Climate Datasets):

Static Maps: http://www.cityfloodmap.com/2015/12/severe-storm-trends-canada-rainfall.html

Interactive Map: http://www.cityfloodmap.com/2015/12/canadian-extreme-rainfall-map-climate.html

Table Summaries: http://www.cityfloodmap.com/2015/12/canadian-extreme-rainfall-summary-by.html

Chart and Table: http://www.cityfloodmap.com/2015/12/top-weather-story-in-canada-2015-less.html

Long-term Station Table: http://www.cityfloodmap.com/2015/12/long-term-climate-change-short-term.html

Environment Canada Denies Changes: http://www.cityfloodmap.com/2015/10/bogus-statements-on-storms-in-cbcnewsca.html

Contradicting Insurance Industry Claims: http://www.cityfloodmap.com/2015/12/trends-in-canadian-shortduration.html