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June 08, 2009

Where is the summer heat?

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Everybody keeps asking when is it going to be hot.

The latest 6-10 and 8-14 day forecast keep us cooler than average with, believe it or not, a better than average chance of rain. Not sure I agree with the rain. Two weeks from today we could see a hot spell.

610prcp 

610temp 

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Our semi-permanent eastern pacific high pressure recently dropped anchor farther west in the Pacific Ocean than normal.  It's absence allowed a trough to develop over the west coast.  The trough keeps driving cooler than average air from Canada into our neighborhoods.  

Nam_200_000s  

Two weeks, yes two weeks from now, our medium range models forecast a retreat of the jet stream back to the north near the Canadian border, where it should be this time of year.  Look for warmer weather then.

Gfs_200_348s

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