Back to this week's update. 

Weather Backtracking
Look at these maps to see the wind conditions during the past week:

April 28

 

April 29
(Note: Predicted on April 27. For actual conditions see archived maps.)

 

April 30
(Note: Predicted on April 27. For actual conditions see archived maps.)

 

May 1
(Note: Predicted on April 27. For actual conditions see archived maps.)

 

May 2
(Note: Predicted on April 27. For actual conditions see archived maps.)

 

May 3

May 4
(For actual conditions see archived maps.)

 

May 5

 

 

May 5

This temperature map shows how far the warm air mass extended into Canada on Wednesday.