October 25, 2022

Annual Precipitation is Close to Normal While Flood Warnings are Out in Western Washington

 Today we have a very vigorous front passage, with a very intense cold front.   

For example, here is an image from the Langley Hill radar (near Hoquiam) at 5 PM.  The arrow points to an intense narrow cold frontal rainband, with red colors indicating torrential rain!  Such intense fronts break down into wave-like undulations.


Amazingly, high-resolution weather prediction models were able to predict this feature but were a bit too fast (see the forecast for 3 PM).  Weather models have come a long way.


The National Weather Service was so worried about this cold front that they put out a flash flood warning for the south Sound area (see below)


The rainfall over the past 24 has been substantial, with some locations getting over an inch.  

The wildfire season in western Washington is now over.

And yes, there is a lot more to come over the next week.

Interestingly, our rainfall for the year is almost exactly normal now in western Washington.

Here is the cumulative precipitation plot since January 1 at Sea-Tac, with the green line showing this year's total and the brown line showing climatological values.  The wet spring balanced the dry summer/early fall.



Same with Hoquiam

Interestingly, the eastern slopes are well above normal; (see Wenatchee below).    Not only was the spring wet, but they had normal summer precipitation.

Further cooling is predicted for next week, with several days not getting above the high 40s. Really a stunning change from a week ago





5 comments:

  1. 34mph wind gust at my house in Bellingham today but not much precip - we were largely rainshadowed during this even

    ReplyDelete
  2. the balancing out act in nature is certainly one to behold and respect...you listening, seattle times...let mother nature be the hyperbole....

    ReplyDelete
  3. Its a good thing we had that wet spring. Otherwise, we might have had water shortages in Puget Sound cities. It isn't the end of the world to ask people to conserve water, but it is less than ideal.

    ReplyDelete
  4. Saw Snoqualmie pass recieved its first snowfall this fall. NOAA is saying Below-normal temperatures are favored from the Pacific Northwest. With the 3rd La Nina happening, will we see an increase in mountain and lowland snow?

    ReplyDelete
    Replies
    1. Yes, La Nina is favorable towards higher mountain snowfall and increased chances of lowland snow.

      Delete

Please make sure your comments are civil. Name calling and personal attacks are not appropriate.

Is Freedom of Speech at Risk at the University of Washington?

Freedom of speech is the essential foundation for a democratic society.  It is also a requirement for a functioning university.   Freedom of...