Thunderstorms Developing Over Cascades

As expected this afternoon, the strong May sunshine and rising motions over the mountains are producing afternoon showers, and a few thunderstorms too.  They are moving from north to south, so it’s unlikely we’ll see any here over the lowlands close to I-5.  But if you live near or in the foothills, you might hear a rumble or get a shower the next few hours.  And you can see there is a storm at 2:30pm just north of Hood River, plus several getting organized over and just south/southeast of Mt. Hood.

37 Responses to Thunderstorms Developing Over Cascades

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  2. Karl Bonner says:

    During my running workout between 5 and 6 pm, a strong thunderstorm cell was developing north of The Dalles and began moving toward us. As I got home I was all excited about the prospect for loud thunderclaps and pea- to dime-size hail. Not to mention another solid shot of rain. And we actually did get a couple decent booms of thunder. But then the storm began to fizzle out as it passed just to the east of us. Epic disappointment!

    The good news is that it’s now very sunny outside and it actually feels a bit like summer this evening. Tomorrow should definitely feel like early summer, with only a modest breeze and afternoon temps approaching 80 degrees. I was getting a bit greedy with the rain after Saturday night’s soaker. I also noticed that since 1997 (15 Mays including this one), we broke the 1″ mark six different times, with nearly 2″ of May rain in 2005 and 1998! If we don’t get any more rain this month, we will be in a tie for third place with last year, May 2010 (1.36″ of measured precip at DLS). And that’s only the past 15 years!

    But there’s still hope for another chance at rain early next week….we shall see what comes about.

  3. W7ENK says:

    All of the CU has finally cleared the South end of the Portland Metro area. Skies are clearing out nicely.

  4. Rob "Wrath" S.E. Portland says:

    I’ve only been able to check out Mesoanalysis a few times today. Good CAPE, LI, Lapse Rates, but moisture is limited as we’re drying out and I don’t expect any showers to wander too far off from the Coast Range and Cascades.

  5. Timmy_Supercell (Klamath Falls @ 4200') says:

    Convection appears to be developing all over the place, some even down here too. About an hour ago there was big anvil cloud out east of my school, I bet there was tons of hail under that one 🙂

    And I got some pictures but I’ll upload them at the end of the day. (Sadly no pictures of the anvil, bad view)

  6. Kyle From Silverton says:

    There can’t be such a town called Idiotville.

  7. Karl Bonner says:

    Saw a couple wannabe cumulonimbus clouds near The Dalles late this morning but nothing out there as of 3pm.

    Oh yeah, I’m just now listening to last week’s podcast. Thanks a lot, Mark, for ruining my lunch appetite with your defrosted ribs anecdote!

    • Mark Nelsen says:

      That first segment went WAY too long! But we just recorded a more concise but fun podcast with Stephanie Kralevich…it should be up late this evening or tomorrow. It was a fun one.

  8. Josh (Gresham) says:

    Looks like some storms firing up over the coast range. Interesting thing about the one Southwest of Mcminnville is that it weakened then doubled in size

    • Brian says:

      The cell just north and west of Carlton is on an intercept course with my house. Wonder if it’ll hold together?

    • Josh (Gresham) says:

      Where do you live?

    • Brian says:

      Just west of Carlton…sky getting darker to the north..cell strength..wavering.

    • Kyle From Silverton says:

      Computer raise shields to maximum!

    • Austin (Cornelius) says:

      They are billowing REALLY fast. I live in corn town again I also am in an intercept line. (fingers crossed) 😀

    • Josh (Gresham) says:

      Looks like it’s weakening again

    • Brian says:

      looks like the vast majority of it is evaporating. The cell near Mcminnville earlier had a fairly narrow column of rain making it to the ground. When it grew in size the rain did not look like it was making it the ground in significant quantities. Now there is barely anything left of that cell.

    • Brian says:

      Big clap of thunder…a few rain drops now

    • Josh (Gresham) says:

      Anything more?

  9. Josh (Gresham) says:

    Check out the storms moving through Virginia today

  10. W7ENK says:

    I don’t think this will amount to anything for us here in the valley. 😦 There just isn’t enough moisture available on this side of the mountains.

    Now, there was quite a bit of rain to our North yesterday, so I’m willing to bet the humidity is higher up there today, and that might prove useful?

    Wishful thinking, only.

    • Josh (Gresham) says:

      Humidity is around 35% at most stations to our North, while PDX is at 25%. Not sure if that makes a difference though

    • Josh (Gresham) says:

      Look at this, very small, but random red echo southwest of McMinville

    • Mike near Clackamas Town Center says:

      There does seem to be a T-storm cell over the coast range due west of McMinville sagging slowly south.

    • Josh (Gresham) says:

      Check it out now! Two seperaate cells, the Mcminnville one, and one near Idiotville (best name ever by the way). Definitely something to keep an eye on

    • Josh (Gresham) says:

      Looks like a strike popped up just now out of that cell 😀

    • Mike near Clackamas Town Center says:

      I saw the lightning symbol pop up near both cells……Someone living near those storms are getting a lucky treat right now.

    • Josh (Gresham) says:

      Wonder if there’s any chance these move into the metro

    • Mike near Clackamas Town Center says:

      Very unlikely any come close to Portland 😦

  11. pappoose in scappoose says:

    Who’s on first.

  12. Josh (Gresham) says:

    Maybe I’ll hear something… Not TOO awful far away from the foothills

  13. Brian says:

    Woo Hoo

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