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Show Weather Tips Explained How is a stationary front formed'.' What causes most of ' them in fall and winter? A STATIONARY front usually results from the movement move-ment of a cold air mass into a mass of warmer air. Instead of forcing a passage and breaking through, sometimes some-times the cold front's winds w ill blow parallel to the juncture junc-ture of the two air masses. THE COLD air mass thus ; " stands still-as far as forward : . movement is concerned. The warm air mass sends its winds parallel to the juncture line (the stationary front), but in exactly the opposite direction direc-tion of those of the cold air mass. IN SUMMARY, the station- ary front is set up when a warm and cold air mass meet and neither is strong enough to dissipate dis-sipate the other. |