Ceaseless Wind

Hot First Half of August

The long awaited shift toward cooler temperatures has begun!  This ”less hot” snap will last a bit longer than others in recent memory.

The graph shows our high temperature plot for the first fifteen days of the month.  It includes five 99 degree highs, two triple digit highs and a record high of 101 this past Friday.

The cooler air is here because the jet stream has changed.  An area of cooler air aloft is settling into the northern Great Plains.  This is pushing out the area of hot air which has persisted  over the central and southern U.S. most of the month.

Flow of air around the cool air aloft is nudging at surface air which is cooler and drier over Canada and dragging it southward in the form of bubbles of high pressure.

 This pattern is expected to hold through Wednesday. By the weekend, it looks as if the high air aloft will begin to build back into the area.