A Few Showers, Then Plenty of Dry Weather Ahead This Week

5pm Monday…

We’ve seen quite a warm-up the past week.  We spent about two weeks in Portland with highs near/below average ending the middle of last week.  But since last Wednesday temperatures have “stepped up”.  Every day has been in the 60s and of course we hit 76 last Thursday.

High Temp Last 13 Days

After a very wet start to April, we’ve dried out quite a bit too.  The last 10 days we’ve seen very little rain, less than 1/2″ in Portland.

Rain PDX Last 10 Days

Of course it has been VERY wet across much of Oregon the past 30 days.  Some spots in Eastern Oregon have seen 2-3 times typical April rainfall!  So it’s about time we dry out a bit.

Tonight a weak cold front drags across southern Washington and northern Oregon.  Most rain/showers will be in Coast & Cascade ranges plus west slopes & foothills.  WRF-GFS shows just a few sprinkles west metro and up to 1/3″ the next 24 hours in the western Gorge.

wrf_rain_wed_am

Expect a brief soaking far east metro and west slopes of the Cascades later tonight and Tuesday morning.  All of us see sprinkles or light showers the next 24 hours but “wet” conditions will be mainly east metro.  Beyond that a weak northerly or northeast (offshore) flow takes over Wednesday through Friday.  Lots more sunshine and temps warming above normal once again.

Take a look at 10 day rain forecasts from the GFS, ECMWF, & GEM models.  All are drier than average for the end of April and early May.  In fact all three produce less than 1/2″ rain in much of the metro area through a week from Thursday.

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That said, we’ll see a cool/showery upper-level trough move by just to our east coming up on Saturday/Sunday.

ecm_sat_troughslidesby

 

Then by 8 days from now it deepens into a cool trough along the West Coast

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This is a cool pattern, but not very wet. The ECMWF 10 day precipitation anomaly shows a drier than average western USA.

euro_precipanomaly

This could be a setup for a late season frost in outlying areas early next week too with cool and dry air in place.  So don’t plant those warm weather veggies yet!

Chief Meteorologist Mark Nelsen

 

16 Responses to A Few Showers, Then Plenty of Dry Weather Ahead This Week

  1. Jason Hougak says:

    Waking up to 31F up here in the foothills. Frost advisory forget about that, more like freeze warning.

  2. Roland Derksen says:

    Strong NW winds developed here early this morning. Haven’t heard of power disruptions, but I’ve seen a few smallish branches down. Temperature is staying cool in the wind-around 54 or 55F.

  3. Roland Derksen says:

    Some fairly cool mornings of late: yesterday under a clear sky, the day began with 38F. That’s a bit cool for me to put out my tomatoes in the garden.

  4. Spring Snow Possible in the Northern Tier
    Meteorologist Domenica Davis looks at a cold pattern bringing the potential for late-April snow for the Northern Tier.
    At a Glance

    A shift in the upper-level pattern will take place late this week.Below-average temperatures are expected from the northern Rockies into the Great Lakes.
    

    Seriously about to get a green house..

    But at least we get free power.

  5. Anonymous says:

    So much for my poor little seedlings…
    Seriously planning for a green house..

  6. boydo3 says:

    Radars are lit up by migrating birds now. It’s a nightly thing in the spring!
    https://a.atmos.washington.edu/~ovens/loops/wxloop.cgi?rtx_n0r+/2h/

  7. boydo3 says:

    Dryer than average is a good thing now!

  8. Joshua Lake Oswego says:

    ECMWF, GFS, and GEM all dry as a bone through 240 hours.

  9. Roland Derksen says:

    October-like here yesterday (even some drizzle in the evening) and pretty damp and cloudy today yet. But things are slowly improving.

  10. October-like weather to end April? I’ll take that!

  11. Pat says:

    Looks good.

  12. Anonymous says:

    Lets enjoy the cool weather now because we all know whats coming this summer more record heat, perhaps the sixth wamer/hotter then normal summer in a row.

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