Ontario Climate Trends 2015 - Extreme Rainfall

Ontario Rainfall
Environment Canada's Engineering Climate Datasets includes IDF curve and other extreme weather trend data - the map and tables below show where extreme rainfall is decreasing and increasing in Ontario. Fifty-two climate stations have less extreme rain. No Greater Toronto Area stations have statistically significant increases in rainfall intensity, despite recent high-profile flood events.

The version 2.3 data for Ontario shows the following:

Rain Trend (15 min.)
Trend Significance
Decreasing Extremes
Significant (at 5% level)
2 stations
Decreasing Extremes
Not Significant
49 stations
No Data
Not Significant
13 stations
Increasing Extremes
Not Significant
63 stations
Increasing Extremes
Significant (at 5% level)
6 stations



Station
 ID
Trend / Significance
Weather Station Name, Province
    6106000
Decreasing / Significant
Ottawa Macdonald-Cartier Int'L A,  ON  
    6158665
Decreasing / Significant
Toronto Island A,  ON  
    6020LPQ
Decreasing / Not Significant
Atikokan (Aut),  ON  
    6037775
Decreasing / Not Significant
Sioux Lookout A,  ON  
    6041221
Decreasing / Not Significant
Caribou Island,  ON  
    6046770
Decreasing / Not Significant
Pukaskwa Natl Park,  ON  
    6056907
Decreasing / Not Significant
Rayner,  ON  
    6059408
Decreasing / Not Significant
Wawa (Aut),  ON  
    6068158
Decreasing / Not Significant
Sudbury Science North,  ON  
    6073980
Decreasing / Not Significant
Kapuskasing Cda On,  ON  
    6079068
Decreasing / Not Significant
Upper Notch,  ON  
    6084307
Decreasing / Not Significant
Lake Traverse,  ON  
    6085700
Decreasing / Not Significant
North Bay A,  ON  
    6100971
Decreasing / Not Significant
Brockville Pcc,  ON  
    6101901
Decreasing / Not Significant
Cornwall Ont Hydro,  ON  
    6104027
Decreasing / Not Significant
Kemptville Cs,  ON  
    6104146
Decreasing / Not Significant
Kingston A,  ON  
    6104175
Decreasing / Not Significant
Kingston Pumping Station,  ON  
    6105978
Decreasing / Not Significant
Ottawa Cda Rcs,  ON  
    6107836
Decreasing / Not Significant
Smiths Falls Ts,  ON  
    6110557
Decreasing / Not Significant
Barrie Wpcc,  ON  
    6111792
Decreasing / Not Significant
Collingwood,  ON  
    6112072
Decreasing / Not Significant
Dorset Moe,  ON  
    6116132
Decreasing / Not Significant
Owen Sound Moe,  ON  
    6116843
Decreasing / Not Significant
Ragged Rapids,  ON  
    611E001
Decreasing / Not Significant
Egbert Cs,  ON  
    6127514
Decreasing / Not Significant
Sarnia Airport,  ON  
    6133362
Decreasing / Not Significant
Harrow Cda Auto,  ON  
    6135638
Decreasing / Not Significant
Niagara Falls,  ON  
    6136606
Decreasing / Not Significant
Port Colborne,  ON  
    6137287
Decreasing / Not Significant
St Catharines A,  ON  
    6137362
Decreasing / Not Significant
St Thomas Wpcp,  ON  
    6137730
Decreasing / Not Significant
Simcoe,  ON  
    6139525
Decreasing / Not Significant
Windsor A,  ON  
    6140818
Decreasing / Not Significant
Blue Springs Creek,  ON  
    6140954
Decreasing / Not Significant
Brantford Moe,  ON  
    6149625
Decreasing / Not Significant
Woodstock,  ON  
    6142286
Decreasing / Not Significant
Elora Rcs,  ON  
    6151042
Decreasing / Not Significant
Burketon Mclaughlin,  ON  
    6153194
Decreasing / Not Significant
Hamilton A,  ON  
    6154820
Decreasing / Not Significant
Main Duck Island,  ON  
    6155722
Decreasing / Not Significant
Oak Ridges,  ON  
    6155790
Decreasing / Not Significant
Orangeville Moe,  ON  
    6158355
Decreasing / Not Significant
Toronto City,  ON  
    6158406
Decreasing / Not Significant
Toronto Booth,  ON  
    6158732
Decreasing / Not Significant
Toronto Leslie Eglinton,  ON  
    61587PG
Decreasing / Not Significant
Toronto Seneca Hill,  ON  
    6158875
Decreasing / Not Significant
Trenton A,  ON  
    6166418
Decreasing / Not Significant
Peterborough A,  ON  
    6166450
Decreasing / Not Significant
Peterborough Stp,  ON  
    6169453
Decreasing / Not Significant
West Guilford,  ON  
    6084278
No Data /  N/A
La Cave,  ON  
    6119115
No Data /  N/A
Utterson Ont Hydro,  ON  
    6142803
No Data /  N/A
Glen Allan,  ON  
    6144241
No Data /  N/A
Kitchener City Eng 2,  ON  
    6146745
No Data /  N/A
Prospect Hill,  ON  
    6151059
No Data /  N/A
Burlington Fire Hq'S,  ON  
    6153410
No Data /  N/A
Heart Lake,  ON  
    6154950
No Data /  N/A
Maple,  ON  
    6155187
No Data /  N/A
Milton Kelso,  ON  
    6157831
No Data /  N/A
Smithfield Cda,  ON  
    6158084
No Data /  N/A
Stouffville Wpcp,  ON  
    6159010
No Data /  N/A
Tweed,  ON  
    6159510
No Data /  N/A
Wilcox Lake,  ON  
    6012199
Increasing / Not Significant
Ear Falls (Aut),  ON  
    6014353
Increasing / Not Significant
Lansdowne House (Aut),  ON  
    6016525
Increasing / Not Significant
Pickle Lake (Aut),  ON  
    6016975
Increasing / Not Significant
Red Lake A,  ON  
    6034075
Increasing / Not Significant
Kenora A,  ON  
    6036907
Increasing / Not Significant
Rawson Lake (Aut),  ON  
    6040325
Increasing / Not Significant
Armstrong (Aut),  ON  
    6042716
Increasing / Not Significant
Geraldton A,  ON  
    6048268
Increasing / Not Significant
Thunder Bay Cs,  ON  
    6052259
Increasing / Not Significant
Elliot Lake A,  ON  
    6055210
Increasing / Not Significant
Mississagi Ont Hydro,  ON  
    6057592
Increasing / Not Significant
Sault Ste Marie A,  ON  
    6059475
Increasing / Not Significant
White River,  ON  
    6061361
Increasing / Not Significant
Chapleau A,  ON  
    6068150
Increasing / Not Significant
Sudbury A,  ON  
    6072183
Increasing / Not Significant
Dymond Ont Hydro,  ON  
    6074211
Increasing / Not Significant
Kirkland Lake Cs,  ON  
    6075435
Increasing / Not Significant
Moosonee Rcs,  ON  
    6076540
Increasing / Not Significant
Pinard,  ON  
    6078285
Increasing / Not Significant
Timmins Victor Power A,  ON  
    6093004
Increasing / Not Significant
Great Duck Island,  ON  
    6100493
Increasing / Not Significant
Bark Lake Dam,  ON  
    6101820
Increasing / Not Significant
Combermere,  ON  
    6101874
Increasing / Not Significant
Cornwall,  ON   
    6106400
Increasing / Not Significant
Petawawa Nat Forestry,  ON  
    6119500
Increasing / Not Significant
Wiarton A,  ON  
    6121912
Increasing / Not Significant
Cove Island,  ON  
    6122847
Increasing / Not Significant
Goderich,  ON  
    6131415
Increasing / Not Significant
Chatham Wpcp,  ON  
    6131983
Increasing / Not Significant
Delhi Cs,  ON  
    6134610
Increasing / Not Significant
Long Point,  ON  
    6137154
Increasing / Not Significant
Ridgetown Rcs,  ON  
    6139148
Increasing / Not Significant
Vineland Station Rcs,  ON  
    6139538
Increasing / Not Significant
Windsor University,  ON  
    613P001
Increasing / Not Significant
Point Pelee Cs,  ON  
    6141095
Increasing / Not Significant
Cambridge Galt Moe,  ON  
    6142400
Increasing / Not Significant
Fergus Shand Dam,  ON  
    6142991
Increasing / Not Significant
Grand Valley Wpcp,  ON  
    6143090
Increasing / Not Significant
Guelph Turfgrass Cs,  ON  
    6143087
Increasing / Not Significant
Guelph Smallfield Farm,  ON  
    6144478
Increasing / Not Significant
London Cs,  ON  
    6145504
Increasing / Not Significant
Mount Forest (Aut),  ON  
    6146714
Increasing / Not Significant
Preston Wpcp,  ON  
    6148105
Increasing / Not Significant
Stratford Wwtp,  ON  
    6149387
Increasing / Not Significant
Waterloo Wellington A,  ON   
    6150830
Increasing / Not Significant
Bowmanville Mostert,  ON  
    6151137
Increasing / Not Significant
Campbellford,  ON  
    6153020
Increasing / Not Significant
Greenwood Mtrca,  ON  
    6153301
Increasing / Not Significant
Hamilton Rbg Cs,  ON  
    6155878
Increasing / Not Significant
Oshawa Wpcp,  ON  
    6156533
Increasing / Not Significant
Picton,  ON  
    6158520
Increasing / Not Significant
Toronto Ellesmere,  ON  
    6158525
Increasing / Not Significant
Toronto Etobicoke,  ON  
    6158575
Increasing / Not Significant
Toronto Greenwood,  ON  
    615S001
Increasing / Not Significant
Toronto North York,  ON  
    6158731
Increasing / Not Significant
Toronto Intl A,  ON  
    6158740
Increasing / Not Significant
Toronto Met Res Stn,  ON  
    6158764
Increasing / Not Significant
Toronto Old Weston Rd,  ON  
    615HHDF
Increasing / Not Significant
Toronto York Mills,  ON  
    615HMAK
Increasing / Not Significant
Toronto Buttonville A,  ON  
    615N745
Increasing / Not Significant
Oakville Southeast Wpcp,  ON  
    6163171
Increasing / Not Significant
Haliburton 3,  ON  
    6164432
Increasing / Not Significant
Lindsay Filtration Plant,  ON  
    6010738
Increasing / Significant
Big Trout Lake,  ON  
    6047810
Increasing / Significant
Slate Island,  ON  
    6110617
Increasing / Significant
Beausoleil,  ON  
    6115811
Increasing / Significant
Orillia Brain,  ON  
    6121940
Increasing / Significant
Cyprus Lake Cs,  ON  
    6150689
Increasing / Significant
Belleville,  ON  

*****

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

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