A Historic Coastal Day

SnapshotQuite a day at the beaches…obviously the east wind had no problem making it to the beaches.  Looks like Astoria, Seaside, and Tillamook all hit all-time May highs.  Newport probably did too, the 95° here is from the Airport, which isn’t the same spot where records are kept.

Of course I was disappointed by the "cool" 92 at PDX, but the 96-97-98 at Vancouver, McMinnville, and Aurora make me feel a bit better.

Easterly flow ends soon after daybreak Saturday, replaced by a late afternoon southwesterly surge up the Valley.  I think it’ll be too late to keep PDX below 90, but it’ll be close.

No changes on the thinking Sunday…increasing marine air, but no strong trough in the upper atmosphere means a moderate amount of cooling.  This time of the year a combination of the two could drop us 25 degrees in a day!  That shouldn’t happen this time.

Have a nice weekend…looks like Summer!  Mark Nelsen

112 Responses to A Historic Coastal Day

  1. 93.9° for a high today here which is not a record for Hillsboro on this date.
    The wind has shifted to the west and the temp has started to drop.
    Currently 91.4°

  2. Robert in Vancouver says:

    I’m toying around with the final position of my thermometer I mounted last month, and know it is running about 2-3 degrees hotter than reality because of its positioning, but I’m showing 102.5 outside right now. Another thermometer I have shows 100.2. Either way, quite toasty and much warmer than expected. Steady hot wind out of the W/SW at 5-10mph.
    Guess we shattered the record books for today!

  3. Nof out near Carlton says:

    Sitting at 92.3, winds are turning more westerly over the last hour or so. Had been southerly/SSE most of the day. Don’t expect much more heating if this keeps up. How bout that BSG last night? It just keeps getting deeper…How is RDM gonna pull it off? Or is he gonna leave us some craptastic Soprano’s ending?!

  4. Had to post… Just now (rather two minutes ago) I hit 100.0 degrees in the shade!

  5. John - Aloha says:

    94 here in Aloha; now seeing some westerly winds, cooling??

  6. Paul(orPbo9) says:

    95º here. NoPo. Surprisingly hot today.

  7. Big_D says:

    95 in Oregon City

  8. Derek-West Gresham says:

    They are now 92, I am 91.

  9. Jesse-Orchards says:

    I see PDX is 89 as well. 2 degrees ahead of yesterday.

  10. Derek-West Gresham says:

    PDX 89 as of 12:53 as well.

  11. Jesse-Orchards says:

    89 here.

  12. Derek-West Gresham says:

    Now its 90 here. How is everybody else doing?

  13. Derek-West Gresham says:

    Clear up to 86.5.

  14. Anonymous says:

    Just hit 83 here and kinda humid here (for Oregon).
    DP is 63!
    Humidity is 52%

  15. Derek-West Gresham says:

    79 here and rising.

  16. 76.9 Here but rising rapidly after an overnight low of 58.
    The wind was out of the SE when I got up but has veered to the SSW in the last hour.
    hmmm..so where is the heat low? I don’t see stratus pulling up the coast as I would expect if it was moving north or east of us.

  17. Luvry says:

    Mat, you eat wusies? haha! A/C is a godsend, i’ve never had it in a car or my house before…my new house has central air and just bought a car that actually has AC, what an amazing thing!!!! Would love to see the pop in the power grids yesterday with that weather! Where’s Jacob BPA with his electricity info!???
    Currently sitting at 76.6 with an unexpected 5mph S SSW wind this morning, what an amazing day this is shaping out to be!

  18. Hmmmmm
    PDX NWS AFD
    .SHORT TERM…SATELLITE IMAGERY THIS MORNING SHOWS A VERY LARGE UPPER LEVEL RIDGE PERSISTING OVER MOST OF WESTERN NORTH AMERICA. THE ANTICYCLONIC CIRCULATION ASSOCIATED WITH THIS RIDGE EXTENDS FROM THE YUKON TO BAJA CALIFORNIA…WITH THE RIDGE AXIS STRETCHED NORTH-SOUTH ACROSS NORTHERN CALIFORNIA AND THE CASCADE CREST OF WA/OR. SURFACE PRESSURE ANALYSIS SHOWS A BAGGY THERMAL LOW OFF THE WA/OR COAST…AND ANOTHER THERMAL LOW OVER THE MID-COLUMBIA BASIN. THE RESULT IS A WEAK PRESSURE GRADIENT ACROSS THE PACIFIC NORTHWEST…THE LACK OF HIGH PRESSURE OFFSHORE IS DELAYING A BROAD ONSHORE PUSH OF MARINE AIR INTO OUR DISTRICT.
    A SURGE OF SOUTHERLY WIND MOVED UP THE COAST FRIDAY…BUT THE IMPACT ON TEMPERATURES ALONG THE COAST WAS FAIRLY WEAK. EUREKA…CRESCENT CITY…AND BROOKINGS ALL HAD HIGHS IN THE 80S FRIDAY…DESPITE THE FACT OFFSHORE FLOW HAD WEAKENED. A SIMILAR SITUATION APPEARS TO BE OCCURRING ALONG THE NORTHERN AND CENTRAL OREGON COAST TODAY. OFFSHORE FLOW IS EITHER NON-EXISTENT OR MUCH WEAKER THAN FRIDAY…BUT NEWPORT AND TILLAMOOK WERE ALREADY NEAR 70 DEGREES BY 8 AM THIS MORNING. WITH THE LACK OF OVERALL GRADIENT…THE COLD OCEAN SHOULD GENERATE A SEABREEZE NEAR THE IMMEDIATE COAST LATER THIS MORNING…BUT ELSEWHERE IT APPEARS ONLY SLIGHT COOLING IS IN STORE FOR TODAY. WILL UPDATE THE FORECAST TO RAISE TEMPERATURES SEVERAL DEGREES ALONG THE COAST DUE TO THE TREND THIS MORNING…AND WILL PUSH THE PORTLAND METRO AREA BACK UP TO NEAR 90 DEGREES TODAY.
    FINALLY TONIGHT AND SUNDAY…IT APPEARS THE RIDGE ALOFT WEAKENS… ALONG WITH THE THERMAL LOW OFFSHORE. THIS SHOULD OPEN THE DOOR FOR A MORE SIGNIFICANT ONSHORE PUSH LATER TONIGHT AND SUNDAY. ALTHOUGH THIS WILL BE TOO LATE TO HAVE A SIGNIFICANT IMPACT ON INLAND TEMPS
    TODAY…SUNDAY TEMPS COULD BE A GOOD 10 TO 15 DEGREES COOLER INLAND. THE ONSHORE PATTERN CONTINUES INTO EARLY NEXT WEEK…WITH MODELS SHOWING FAIR AGREEMENT IN BRINGING IN A FRONTAL SYSTEM MON NIGHT OR TUESDAY. WEAGLE
    ————————————-
    Hmmmm ok that sheds a lot of light on the situation as to why we are warming so quickly this morning. I do think 90 is a bit conservative. Due to the lack of marine push, lack of clouds, continued light offshore flow, and apparently no capping of our day time highs I am going with 90-95 today.

  19. Mat ne portland says:

    Yes a/c is nice. I truly feel like an Oregonian putting it in for a few days of heat. Especially when we all know it’ll cool off condiderably for awhile. Oh well, I;m a wussie……I guess I am what I eat.

  20. Currently 71°
    low this morning was 56.9°

  21. Isn’t A/C nice? I’d die without that.. I remember when the house used to be 90-95…. brutal. We already have ours on we are wussies 🙂

  22. Mat ne portland says:

    Awesome Rob. I hope it thickens all day. I want another hot one since I hooked uo a/c yesterday. Bring it.

  23. 80.5 now… Ridiculous I am warmer than I was yesterday at 10 AM.

  24. Anonymous says:

    80.0 now

  25. 77.0 here
    I was 80 at 9:45 AM yesterday. I could surpass that.
    Also looking at loops I do not see any low clouds/stratus along the Coast…. Hmmmm…. The plot thickens further.

  26. Jethro (in Molalla) says:

    Topped out at 99 degrees south of Canby yesterday, and right at 97 in Molalla. Overnight low in Molalla was 66, and already back up to 75.

  27. wendy-silverlake,wa says:

    First clear morning. 10 degrees warmer this morning compared to yesterday morning. Off to the ball field. What a day for a double header. My son’s gonna fry.

  28. Hmmmm……..
    After being calm since 5:45 AM I now have light(5-10mph) NE to E winds for the past 20 minutes.
    I’m 74.1 now.
    The morning sun is mixing down these light winds, but this may be causing slight downsloping as well. The plot thickens….
    I wonder if my thoughts yesterday of the heat low kind of stalling west of us continuing at times very light offshore winds thus giving us a hotter day then previously thought will come to fruition. It’s only 8:00 AM so could just be getting ahead of myself.
    Surface gradients as of 8:00 AM
    PDX-DLS -1.1
    TTD-DLS -1.2

  29. My low was 64.2 at 6:29 AM.
    I am now 70.4
    Remarkable warming underway this morning.
    Hmmm I’m even going out on a major limb here… IF we can hold off the marine push until this evening we may be in the 90-94 range. I know I am really hanging myself out there on that one….

  30. Already 69.2 here
    Surface gradients as of 7:00 AM
    PDX-DLS -1.5
    TTD-DLS -1.4
    Offshore gradients hanging on for dear life.
    [IR Loop]
    http://www.atmos.washington.edu/~ovens/loops/wxloop.cgi?ir4km+12
    Reveals that there should be little if any cloud cover today. I’m thinking with wall-to-wall sunshine all day we may recover into the 88-92 range. Also I notice a S-SSW flow looks to move overhead tonight.

  31. 65.2 here
    This is what I would expect from mid July-mid August, not during May. Wind is now almost calm.

  32. Jesse-Orchards says:

    64 here. Off to bed.

  33. 74.7 here
    Surface gradients as of 1:00 AM
    PDX-DLS -2.2
    TTD-DLS -2.5
    Light east wind persists. Well I certainly wish I was down in the 60’s as the house needs to be aired out cooled off. Can’t put a fan in the window above 70F doesn’t do any good.
    Well that’s it for me.
    Enjoy your weekend everyone.
    Good night all.

  34. Jesse-Orchards says:

    67 here. Should have no trouble being in the 50s again by morning. Ahhhhhh…….

  35. John - Aloha says:

    70 here in Aloha – no wind interesting

  36. 76.1 here
    Surface gradients as of 12:00 AM
    PDX-DLS -2.1
    TTD-DLS -2.7
    East wind keeps on keepin’ on….
    Derek, that may be the case with the winds going all night, lightly. If so we may struggle to get below 70 much.

  37. Derek-West Gresham says:

    Perhaps the wind will continue all night..then I can finally have something fun about this event.
    It was certainly an extremely warm airmass but things just came together wrong. East winds blew all day, we had cloudcover, thermal trough didn’t move up at the right time…etc.

  38. Thanks for the update, Mark..
    Yeah for the PDX east metro areas the east wind was a bit too strong keeping the air mixed fairly continuously thus not allowing the air to compress. We want downslope and the compressional heating effect, but we only want it at a light maybe 5-15mph range. This has happened many other times. Now as for tonight it’s having an adverse effect due to light offshore breezes continuing not allowing temperatures to fall off as rapidly as west of I-5 or so due to the same situation, air molecules constantly mixing slowing down the overnight cooling.

  39. Paul(orPbo9) says:

    Calm here and 76º, I expected it to be
    cooler by now.
    It was 98º at work. One mile west of
    the N. Wilsonville exit.
    toasty. I thought the 105º @ Roseburg
    and 106º at Grants Pass were impressive
    for May.

  40. Paul(orPbo9) says:

    Calm here and 76º, I expected it to be
    cooler by now.
    It was 98º at work. One mile west of
    the N. Wilsonville exit.
    toasty. I thought the 105º @ Roseburg
    and 106º at Grants Pass were impressive
    for May.

  41. Still 78.2 here
    Surface gradients as of 11:00 PM
    PDX-DLS -2.2
    TTD-DLS -2.6
    East wind keeps on keepin’ on….

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