Summer Officially Arrives Friday June 21st-Be Patient in Star Valley!

Summer Officially Arrives Friday June 21st-Be Patient in Star Valley!

At 9:54 am MST Friday June 21st summer officially arrives in Star Valley as well as the remainder of the Northern Hemisphere.  However it will be more like an April Fools joke in Star Valley and surrounding areas as temperatures Friday afternoon will be some 15-20 degrees below the normal.  There will also be the potential for some local near freezing temperatures by Saturday morning in some of the colder valley locations of Western Wyoming.

The culprit is the forecast development of an unseasonably cool upper trough over the western U.S.

Forecast 500 mb chart for Friday afternoon June 21, 2019

The map of the forecast surface high temperatures for Friday afternoon  provide a glimpse as to how cool this part of the Western U.S. will be.

Maximum Temperatures Friday Afternoon June 21 2019

 

The following chart shows the departure from normal the Friday afternoon temperatures will be:

Departure from Normal for forecast Friday afternoon temperatures

 

It appears that even into the following week the long range forecast suggest that summer like temperatures will likely be delayed even more

 

Forecast temperatures departure from normal for the period Sunday June 23-Thursday June 27 2019

Along with somewhat wetter than normal conditions

Precipitation departure from normal Sunday June 23-Thursday June 27 2019

 

 


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