Another Record Breaker…Slightly Warmer Tomorrow

9pm Wednesday

It sure felt like July today!  Here in Portland we started in the 50s and ended well into the 80s; a typical mid-summer day.  Except that it’s the 25th of April.  The result was several more record high temperatures, mainly in the metro area:

Record Highs Cities

And we did that with extremely weak offshore flow.  Even in the Gorge the wind died down to a slight breeze plus downslope wind off the Cascades disappeared.   So it’s quite impressive from a meteorological standpoint we were able to make it into the mid 80s. Models absolutely nailed the atmosphere overhead.  850mb temps at Salem were 16.6 degrees on this afternoon’s balloon sounding.

Todays Observed Highs OrWa 2017

Check out the coastline…what a change!  Newport was 30 degrees colder today…that’s always a tough forecast right along the cold ocean/warm land interface (the beaches).  Notice the onshore flow didn’t make it up to Hoquiam; still well into the 70s there.

WHAT HAPPENS THURSDAY?

A very interesting setup with the thermal trough (warmest air) sitting from about Kelso to just east of Salem and Eugene.  That means west of that line onshore flow kicks in during the afternoon = cooler.  But from Kelso/Longview to the Portland metro area we get a light easterly flow once again as high pressure briefly strengthens east of the Cascades.  Result?  All models are adding 2-4 degrees to our highs tomorrow.  85-86 is likely throughout the Portland metro area.  You can see the bubble of warmer temperatures from Portland north on the GFS and the cooler temps to our south.  This is the 5pm Thursday forecast:

gfs_t2m_b_portland_5

South of the metro area it should be the same or cooler.  I bet Eugene only reaches 70-75 tomorrow afternoon.

Regardless, expect a major push of cool ocean air tomorrow evening even in the metro area.  By Friday morning the marine layer is 5,000′ thick from the Cascade crest to the coastline.  We’re not going to see any sunshine Friday!

Two more thoughts on Friday’s weather:

  1. A band of rain pushes north midday and into the afternoon across the state.  Most likely the last commute of the week will feature steady rain and temps in the low/mid 50s in Portland…the earlier sunshine and 80s will be a memory less than 48 hours from now.
  2. The thick marine layer will push through the Gorge on a huge westerly wind.  Gusts 40-50 mph are likely from Hood River to The Dalles and out into the desert areas farther east.  Windsurfers prepare…

Chief Meteorologist Mark Nelsen

 

 

31 Responses to Another Record Breaker…Slightly Warmer Tomorrow

  1. Andy says:

    Lightning and thunder just north of Albany. Listening to it thunder in my family room while I’m typing this.

    • K says:

      Fun. Chances start increasing, so you never know…

      • Ken in Wood Village says:

        Have you looked at the IF Satellite? There is a bunch of clouds to our South that have some really high tops. It’s weird, Troutdale is reporting 81F right now. At this time last night we were already in the 70’s. Maybe that could help with getting thunderstorms up my way 🙂

        • Ken in Wood Village says:

          Well, I’m outside now. We are getting a good South to SW wind and the temp has falling. I don’t have a thermometer but it feels much cooler. I can see the high clouds coming from the South too.

  2. Andy says:

    Some dark clouds here in Albany…possible thunder storm.

  3. K says:

    I found this rather old video on YouTube. Do you think it is real, it could be explained by a meteorological phenomenon?

    • Ken in Wood Village says:

      I actually saw this on YouTube. There are some other video’s that look the same as this video. I believe it’s real.

    • Jason Hougak says:

      That’s some end of the world shit right there

    • Jason Hougak says:

      That’s some end of the world stuff right there

    • W7ENK says:

      I’ve seen this video before. That’s some impressive supercell structure!

      We have storms similar to this (albeit much slower moving) on occasion — June 19, 2005 and June 4, 2009 come to mind. the 2005 storm had that classic shelf look to it, really eerie watching it come up the valley from the South.

      It’s about time for a repeat. Maybe this June?

      • K says:

        Oh I would love a repeat this summer. I unfortunately won;t be here to witness it if it happens in late June to July as I will be out of the country, so hoping for early June.

  4. Joshua Downtown PDX says:

    Summer is coming back later next week. Going back to early this week and through the end of next week, it looks like we either get 50s or 80s.

  5. Ken in Wood Village says:

    It’s just a wait and see time. That’s all we can do for now. I’ll look at the satellite pictures later today 🙂

  6. W7ENK says:

    Noticing a distinct lack of an ACCAS field this morning, which doesn’t bode well if you want thunderstorms later in the day. Perhaps something will materialize later on this afternoon, but the VIS and WV loops don’t show a whole lot of moisture to our S and W.

    Not going to get my hopes up…

  7. Paul D says:

    Looking forward to it being a memory! Don’t let the door hit you on the way out, August! April is coming back!

  8. K says:

    That west wind will be quite interesting in the eastern Gorge. Are westerly windstorms typically rare?

  9. K says:

    Too bad about the thunderstorm chances flopping. Oh well, we have a lot more on the way.

  10. Larry says:

    Looks like our “marginal” thunderstorm chance went away too.

  11. Ken in Wood Village says:

    First 🙂

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