A Sweaty Evening

Dewpoint Temps Have Jumped To Around 60 This Evening Due to the Showers

Dewpoint Temps Have Jumped To Around 60 This Evening Due to the Showers

I took a bike ride this evening and made it back just before the larger raindrops arrived. It was definitely a bit humid so those clothes will be heading straight for the washer in the morning.  Some showers made it over the the Cascades and moved down into the Portland Metro Area this evening.  They’ve generally been weak, but one very small cell southwest of Forest Grove appeared suddenly and spit out about 5 cloud to ground strikes according to our lightning data.  The next closest strikes to the metro area were around Zigzag and Welches…lots there between 4:30-5:30pm.

Dewpoints have jumped to near 60 degrees, in fact I’ll probably mention it during the 10pm newscast, even though the bosses generally cringe when they hear the word.  It is a complicated concept, but just remember the higher the number the larger amount of moisture in the air.  The reason I don’t like to use relative humidity is that it’s…well…relative.  It goes up and down dramatically each day while the dewpoint only changes when the actual amount of moisture in the air changes.

Looking ahead:  Pretty slow weather next week…a bit of warming with higher upper-level heights early in the week then some sort of lower heights with some more moisture (from the west this time) later in the week.  Enjoy the weekend because it looks like a decent one for mid-June. 

Mark Nelsen

132 Responses to A Sweaty Evening

  1. …methinks there’s a bit of confusion going on….

  2. TriforceofEternity says:

    Yeah I remember that storm. We didn’t get as much snow as Portland which got buried.

    I heard from the transport van I drive in that Euguene got NOTHING during that storm but I don’t know how accurate that is.

    I actually feel sorry for Eugeners.

  3. Timmy_Supercell (Hillsboro) says:

    I can so see this happening when the real storm season kicks in:

    BULLETIN – EAS ACTIVATION REQUESTED
    SEVERE THUNDERSTORM WARNING
    NATIONAL WEATHER SERVICE PORTLAND OR
    455 PM PDT MON JUL 6 2009

    THE NATIONAL WEATHER SERVICE IN PORTLAND HAS ISSUED A

    * SEVERE THUNDERSTORM WARNING FOR…
    SOUTH CENTRAL MARION COUNTY IN NORTHWEST OREGON…
    NORTHERN LINN COUNTY IN WESTERN OREGON…
    * UNTIL 535 PM PDT…
    * AT 454 PM PDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
    SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO
    BASEBALL SIZE OR LARGER…AND DESTRUCTIVE WINDS IN EXCESS OF 75 MPH.
    THIS STORM WAS LOCATED 10 MILES SOUTH OF MILL CITY…OR ABOUT 23
    MILES NORTHEAST OF LEBANON…AND MOVING NORTH AT 27 MPH.
    * THE SEVERE THUNDERSTORM WILL BE NEAR…
    LYONS BY 515 PM PDT…
    DOPPLER RADAR HAS INDICATED STRONG ROTATION WITHIN THIS STORM.
    WHILE NOT IMMEDIATELY LIKELY…A TORNADO MAY STILL DEVELOP. IF A
    TORNADO IS SPOTTED…ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
    STURDY STRUCTURE…SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

    • Jesse-Orchards says:

      You should be careful with posting some of that faux-warning type stuff.

      Could freak out some of our less savvy readers.

    • Timmy_Supercell (Hillsboro) says:

      Well, just trying to share what we will have pretty soon….. lol

    • Mback says:

      Ya, I’m not sure why you would post something like this. This is going to freak some people out who don’t understand that you just posted this because you thought it was cool. Also, trust me, you would not like to go through a storm like this. Baseball sized hail, 75mph winds and a possible tornado? No way I want this coming by my house. Only way I want to see this is when I am chasing down South or something. Baseball sized hail would destroy a ton of stuff. Just be careful when you post something like this. Perhaps you should put a “What if this happened” first?

    • Timmy_Supercell (Hillsboro) says:

      With all that happened this year already, I just found it possible that we would have this, not that I “want” it to happen. It would be awesome to see on radar though.

      There was a similar line of storms that hit us on June 19 2005, with an intense shelf cloud. That one was warned for tennis ball sized hail w/ 70 mph winds. It didn’t happen of course, but this was already likely a few years ago.

    • Timmy_Supercell (Hillsboro) says:

      Btw, do you remember that storm? it was cool.

  4. TriforceofEternity says:

    We lost power in December due to ice for 20 some odd hours and half that time it wasn’t too bad in the house despite outside being 31F.

  5. TriforceofEternity says:

    The stickyness went away. It’s mostly bad if you are indoors and it was worse earlier today.

    My humidity took a dive like the stock market to 30% this afternoon while my outside therometer climbed to 82F but you’d hardly notice it due to the drier air.

    I admit I am sensitive to humidity so it was enjoyable air outside today and we also have a highly insulated house which traps all the warm air in.

  6. Tetra says:

    I woke up feeling sticky and I looked at my weather station and no wonder! It’s 76 with a relative humidity of 46%.

    I thought it might be t-storm day but since Rob isn’t here I guess not.

    • Timmy_Supercell (Hillsboro) says:

      Conditions aren’t right for storms. East of the Cascades there is a good possibility.

      I LOL’d at your last sentence!

  7. …it’s a sad day….RIP Jack, may the Frasier River Canyon outflow always be strong for you…..
    http://blog.oregonlive.com/weather/2009/06/jack_capell_the_forecaster_who.html

    • Sad day indeed…Jack was THE weather man of his day (or anyone else’s day for that matter)..Between Him and the Columbus Day Storm, they brought weather into my life…I never missed his weather reports…

    • EA_TTD says:

      How true! I learned where Dawson, Yukon Territory was from Jack when he was plotting arctic outbreaks…I still look for observations there in the winter.

      He was the genuine article and he will be missed…RIP Jack.

    • Cliff Watkins says:

      Jack Capell was a good friend of mine since 1950 when we both worked for the PDX Weather Bureau. Jack went from there to BPA as head meteorologist and then to KGW. He served as one of the early Chairmen of the Oregon Branch of the AMS and was the first to describe the dynamics of the Calif-Ore heat low. He was one of the very best persons I have ever known as was his wife Sylvia. He will be missed by many.

    • DEL X V says:

      Jack Capell was a friend of mine and also a co-worker. We both worked for the Portland Weather Bureau back in the early 1950’s and then Jack went to the Bonneville Power Admin as head meterologist and later to KGW. He served as one of the early Chairmen of the Oregon Branch of the AMS and was the first to describe the dynamics of the Calif-Oregon Heat Low. He was one of the best persons I have ever known as was his wife Sylvia. God Bless them….Cliff Watkins

  8. Timmy_Supercell (Hillsboro) says:

    I have a question about GRLevel 3…

    What is the shape file manager for? Can you view past Level 3 data, cause I have a lot of it and would love to view it that way.

    • If it is the “shape file” I am familiar with, they are spatially referenced points, lines or polygons that can be viewed in most GIS software (Geographic Information System). Don’t use GRLevel software so not familiar with its capabilities.

    • Timmy_Supercell (Hillsboro) says:

      That’s the file your talking about. GRLevel radar is GIS software. I’m kinda thinking thats for viewing data, I am sure Rob can help me, since he uses that program all the time. He is usually not here until storms start developing, so I might have to email him…

  9. TriforceofEternity says:

    Want me to send some of that supercell here? LOL.

  10. Mat the Salmon Killer says:

    Mark, hows that sandwich going with Stephanie and Drew?

  11. Timmy_Supercell (Hillsboro) says:

    There was a tornado warned supercell that produced grapefruit size hail in the Panhandle of Texas…..

    I want out!

    • We need to go to the Plains’ states (again) Timmy…Looks like another “dry line” of storms…Been very active in the mid-section of the country lately.

      66.1° here…light SSE wind

  12. Tornado warning near Denver has delayed the Rockie’s/Mariner’s game…

    61.6F

  13. Snow-Zone/Monmouth-Elv200' says:

    What is frustrating is that we are socked in pretty much with sold cloud cover all day and then it starts to clear up in the late afternoon/evening, but by then it is to late to allow any sufficient heating from the sun. This what I have noticed down here all week.

  14. TriforceofEternity says:

    Have your daily dose of convection as part of your complete breakfast.

  15. Timmy_Supercell (Hillsboro) says:

    Man when those storms dissipated yesterday evening, I just vanished from the blog! Like Mike is saying, a rather dry and boring week is ahead of us. And Rob, I do hope what your saying is the case this week, because what can I seriously do without convection?

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

    Probably Mike, but this time of year it doesn’t take a whole heck of a lot to get convection. One of these shortwave troughs could make things favorable when least expected, but of course we’d need surface heating.

  17. Looking like an uneventfull and rather dry week ahead for us….

    Cloudy 58.4F light westerly breeze

  18. …mighty drippy out this way this morning…

  19. Tyler in Hazel Dell says:

    Record daily maximum rainfall set at Eugene or…

    a record rainfall of 1.67 inch(es) was set at Eugene or yesterday.
    This breaks the old record of 0.78 set in 1980.

    —-

    My rainfall total? 0.00″

  20. David Mall205 says:

    I have a nasty cloud formation over me right now very still outside very black, rain comming down in big drops but nothing on the radar? what gives?

  21. Timmy_Supercell (Hillsboro) says:

    Its officially over now, things are dying out…

  22. …meanwhile, on the far southeast side…theres patches of blue and calm…..dare i say…boring weather….

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

    63.5dbz north of Wilsonville

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

    I’m kind of surprised there hasn’t been any lightning with these 2 active areas.

    Zoomed radar

  25. Timmy_Supercell (Hillsboro) says:

    Sherwood has been getting slammed with very heavy rain at least. 58 dBZ core with that cell. It did produce lightning near Newberg…..

  26. Aloha Rainshadow says:

    Chased out to Forest Grove/ North plains as the cells were coming in. Kept hearing strikes on the AM but never once saw one or heard thunder, just drove through some heavy downpours.

    I think an onshore push caused these showers to pop, as I was heading out there, the towers were up around 20-25K feet over the coast range, thought for sure I’d see at least a few bolts, no luck!

    My temp plummeted after the showers passed and have had a stiff NW wind for about an hour and a half now, almost positive it was an onshore push. Got some pretty nice pics of cloud formations and rain shafts, will post when I have the chance.

  27. Beaverton Chris says:

    boringlarry, I realized that I used a different name in that post than I usually do. I guess I was having a blond moment! 😉

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

    The Sherwood area is getting drenched and the Tigard cell has grown.

    Zoomed radar

  29. Sandi (Wilsonville) says:

    Heavy rain in Tigard. Hall Blvd between Bonita & Macdonald.

  30. B Chris, if this is your first posting in the new blog format, you have to be approved first….

  31. Sherwood Bob says:

    Heavy rain now – no thunder in the last 20 minutes

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

    Hasn’t been a lightning strike for 30 minutes or so….. SPC 7:30 PM thermodynamics show everything diminishing rapidly….

  33. Timmy_Supercell (Hillsboro) says:

    Alright, I just one slight rumble to my south, and there is heavy rain to where my high school is, did I pick the perfect area or what? the storms ALWAYS skip me

  34. Beaverton Chris says:

    I’m not hearing anything where I am, either.

  35. Beaverton Chris says:

    I haven’t posted here in quite awhile, but I don’t remember messages being marked for moderation. Hmmm…

  36. Timmy_Supercell (Hillsboro) says:

    The StormVue lightning tracker does show a positive strike just to the east of Beaverton, probably too far for me to hear though

  37. Chris in Beaverton says:

    Rain is coming down pretty heavy now – thankfully no thunder or lightning so far. It’s dropped down about 5 degrees in the last 10 minutes. I’m kinda enjoying watching TV in my living room, just watching the rain pour down.

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

    Well there still are 1-2 pulse areas I am watching primarily near Sherwood and Tigard.

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

    Everything is fading away quickly now… Appears to be a bit of a marine push underway. Better luck tomorrow? Not getting my hopes up.

  40. Timmy_Supercell (Hillsboro) says:

    I got a 25-30 mph gust from it, but no rain or any hail or lightning….

  41. Timmy_Supercell (Hillsboro) says:

    The Hillsboro storm is the only one that actually held its self together now, all eyes on this one.

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

    There hasn’t been a lightning strike in 15 minutes… lol

  43. Timmy_Supercell (Hillsboro) says:

    I don’t hear ANY thunder at all. There has to be an explanation…

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

    I’ve heard well over a dozen strikes the past hour on AM radio. So these must be cloud to cloud strikes….

    Strongest cell is just west of Beaverton

  45. Timmy_Supercell (Hillsboro) says:

    Nowcast of 7:00 pm…

    Now

    At 700 PM PDT National Weather Service Doppler radar indicated scattered showers extending from northwest of Hillsboro in the north Willamette Valley to east of Harrisburg in the south Willamette Valley. These showers were moving slowly to the southeast. Isolated thunderstorms will also be possible. Heavy rain will be the main threat through 8 PM…but small hail…gusty winds up to 35 mph…and dangerous lightning are also possible.

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