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We are about to warm up into the mid-80s this week in the west and 90s in eastern Washington, followed by a profound cool-down and plenty of precipitation.

Consider the latest predictions for temperature in Seattle and the Tri-Cities below.

Temperatures peak on Wednesday, before dropping off the proverbial cliff by the end of the week. 

Classi...


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When it comes to our summer water supply, nothing is as important as the Columbia River.

It is the largest regional source of water for agriculture.

Its water is the largest source of power in the region.

Its water supports important salmon runs.  

And Columbia River water is used for drinking purposes in some communities.


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June is the beginning of the grass wildfire season over the lowlands of eastern Washington.
By June, the extensive grass and range vegetation of the Columbia Basin has dried out and "seasoned" sufficiently to burn.  Also in June, strong westerly (from the west) winds can develop as weak Pacific weather systems move through.
Dry range vegetation, strong winds, and an i...

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Yesterday, the temperature at SeaTac Airport rose to 89F,  beating the all-time daily record for the date (86F)!

Today, even if the temperature is the same, it won't break any records.

How could this be?

It turns out that not all records are equal.

Let me explain.

Below is a plot of observed temperatures (blue bars), ave...


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Some of the greatest treats of June are the relatively rare but stunningly beautiful noctilucent clouds that form very high in the Earth's atmosphere during this time of the year.

Thursday night, there was quite a show, as illustrated by the pictures below.


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