The anomalous Southwest upper trough continues to support cool temps and unseasonable precipitation across California and the Desert Southwest but this will join forces with storm and rain cooled air over the Plains. Eventually, towards the 7-10 day period, cooler than normal air should return to the East where summer warmth has had temps near 90 from DC to Boston this week.

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Recurving typhoons out over the western Pacific should help reshape the upper pattern over North America within the next 2 weeks with a trough making an Eastern comeback prior to the end of the month.

Despite the strong Alaskan ridge lately, it’s the deep, unusually cold cut off low to the south that’s held the summer ridge in the Northeast.

Notice the eastward progression of below normal temps between the opening and following 5 day off the ECMWF.

 

GFS ensemble agrees but keeps it warm where it’s drying out in the Southeast.

Tie in the below precipitation anomaly with the above and notice how the cool goes to where it’s been raining a lot while the heat goes for the areas drying out!

A surface map more suited to winter.

Next 3 days

Next 7 days

ECMWF snow through the next 3 days! Check out Sierra…

With this highly active cross country pattern we get enhanced stormy activity on the Plains.

Each of the next 3 days sees the threat grow…

See today’s video for the discussion.

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Tags: california drought, california rain, california storm, drought, May snow, snow