ON & QC continue to rack up impressive rainfall totals as spring 2017 pushes into the home stretch, underscoring an overall theme which has been fairly consistent for the plurality of the country and that stands in glaring contrast to spring 2016’s meager precip data.

A quick rundown and comparison of May so far,

YQG Windsor ON

May 2017 – 93.4mm

May 2016 – 59mm

May Average – 89.3mm

YHM Hamilton ON

May 2017 – 146.2mm

May 2016 – 41.2mm

May Average – 78.7mm

YYZ Toronto ON

May 2017 – 127.2mm

May 2016 – 34.2mm

May Average – 74.3mm

YOW Ottawa ON

May 2017 – 139.6mm

May 2016 – 26.2mm

May Average – 80.1mm

YUL Montreal QC

May 2017 – 103.8mm

May 2016 – 33.6mm

May Average – 81.2mm

A graphical illustration of the departure from average values for this region over the 90 day period from February 22nd to May 22nd:


There’s widespread support for additional moisture in the pipeline through the end of May which will further boost these spring numbers.

WPC total QPF for days 1-5:


I’ll have a more comprehensive recap of the spring temp & precip data in early June along with continued monthly forecasts into the summer and beyond.

Verification of the May 8th run of the Euro weeklies which covered the May 15th to 22nd timeframe:


The latest info from this piece of guidance which stretches well into June: