The monthly temperature forecast is updated each Thursday and covers the 28 days starting on the following Monday. The forecasted anomaly is produced from the average conditions forecasted over that period by the Global Ensemble Prediction System. A 20 year climatology (1995-2014) of this prediction system obtained from a reforecast is also used in the computation of the forecast anomaly.
What we are doing
Summer 2017: Significant weather across Canada
By analyzing weather events, ECCC is collecting more information as to how our climate is changing.
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