Thursday 30 April 2020

Weather synopsis - R. Weiss, M. Vankosky, T. Rounce

Weather synopsis –  Temperatures (7 day average) have been warmest in MB and western SK (Fig. 1). 
Figure 1. Observed average temperatures across the Canadian prairies for the past seven days (April 20-26, 2020).

Rainfall (7 day accumulation) amounts have been lowest across most of SK.  
Figure 2. Observed cumulative precipitation across the Canadian prairies for the past seven days (April 20-26, 2020).

Over the past 30 days, average temperatures (Fig. 3) and cumulative rainfall (Fig. 4) have been greatest in MB. Temperatures and rainfall are lowest in AB. 

Figure 3. Observed average temperatures across the Canadian prairies for the past 30 days (March 28-April 26, 2020).


Figure 4. Observed cumulative precipitation across the Canadian prairies for the past 30 days (March 28-April 26, 2020).

The growing degree day map (GDD) (Base 5 ºC, April 1-April 27, 2020) is below (Fig. 5):
Figure 5. Growing degree day map (Base 5 °C) observed across the Canadian prairies for 
the growing season (April 1-27, 2020).
Image has not been reproduced in affiliation with, or with the endorsement of the Government of Canada and was retrieved (30Apr2020).  
Access the full map at http://www.agr.gc.ca/DW-GS/current-actuelles.jspx?lang=eng&jsEnabled=true&reset=1588297059209

The growing degree day map (GDD) (Base 5 ºC, April 1-April 27, 2020) is below (Fig. 6):
Figure 6. Growing degree day map (Base 10 °C) observed across the Canadian prairies for 
the growing season (April 1-27, 2020).
Image has not been reproduced in affiliation with, or with the endorsement of the Government of Canada and was retrieved (30Apr2020).  
Access the full map at http://www.agr.gc.ca/DW-GS/current-actuelles.jspx?lang=eng&jsEnabled=true&reset=1588297059209

The lowest temperatures (°C) observed the past seven days ranged from <-16 to >0 °C in the map below (Fig. 7).
Figure 7. Lowest temperatures (°C) observed across the Canadian prairies the past seven days (April 23-29, 2020).
Image has not been reproduced in affiliation with, or with the endorsement of the Government of Canada and was retrieved (30Apr2020).  

The highest temperatures (°C) observed the past seven days ranged from <9 to >21 °C in the map below (Fig. 8).
Figure 8. Highest temperatures (°C) observed across the Canadian prairies the past seven days (April 23-29, 2020).
Image has not been reproduced in affiliation with, or with the endorsement of the Government of Canada and was retrieved (30Apr2020).  

The maps above are all produced by Agriculture and Agri-Food Canada.  Growers can bookmark the AAFC Current Conditions Drought Watch Maps for the growing season.  More weather data can be access at the AAFC Drought Watch website, Environment Canada's Historical Data website, or your provincial weather network.