That Tornado Warning in Portland Metro Area This Evening? UPDATED WITH 2ND WARNING

7:30pm Sunday…

Updated at 10pm Sunday…

Immediately after I published this post at 7:40 pm a 2nd tornado warning was issued for parts of Vancouver from the same strong cell.    Here’s a quick summary of the entire evening:

  • A heavy shower/thundershower moved from about Hillsboro to east Vancouver from 6:45 to 8:15pm
  • It prompted two separate tornado warnings (around Cornelius Pass and then central/east Vancouver)
  • It’s likely a tornado touched down around Cornelius Pass at a Pumpkin Patch (christened a “Gourd-Nado” by Brian MacMillan)

This pic from Jim Kessinger

DCIM101MEDIADJI_0149.JPG

  • As of this moment there are no reports a tornado actually touched down in Vancouver.  Apparently the “confirmed tornado on the ground” wording in the 2nd warning was because the funnel cloud appeared to just about touch the treetops.  So in reality a tornado was never observed on the ground, but very close.

ORIGINAL POST:

Well that was exciting…for about 10 minutes.  If you have a weather app, or the FOX12 app, you probably noticed a TORNADO WARNING appeared for a small part of the metro area around 6:50pm this evening.  That’ll get your attention!

As far as we are aware, there wasn’t a tornado on the ground.  If it happened, it would have been right around Cornelius Pass & Skyline Road in extreme NW Multnomah County.

Here’s the sequence of events:

  1. Weather spotter (and local weather geek) sent pic and called in funnel cloud report.  It was seen north of Hillsboro Stadium over the West Hills.
  2. At the same time radar did indicate very weak rotation, although that alone typically wouldn’t lead to the Portland office of The National Weather Service issuing a tornado warning in my experience.
  3. So Portland NWS issued a tornado warning for about 13 minutes from 6:47pm-7pm.  Then the warning expired.
  4. No tornado was seen on the ground and no funnel cloud was seen over NW Portland as it moved off the West Hills and into the flatlands as far as I’m aware.

Radar looked like this when the warning was issued.  Nothing out of the ordinary

TornadoWarning

But checking out the Storm Relative Velocity shows there was some weak rotation almost right over Cornelius Pass at 6:45pm.  We get a real clear view since it’s only about 5 miles from the Dixie Mtn. radar site.

KPTV 2017 Default Earth

Green colors indicated movement TOWARD the radar site and red is movement AWAY from the radar.  So you’ve got some counter-clockwise rotation going on in that spot.  I’ve seen weaker rotation than this produce a weak tornado in our region.

Within a few minutes most of that “wind shear” or weak rotation disappeared.

That wraps up your funnel cloud story for this evening kids!  Here’s a pic of the funnel cloud from Mitch Etter, taken from Hwy 26 on the west side of the metro area

photo mitch etter

Chief Meteorologist Mark Nelsen

13 Responses to That Tornado Warning in Portland Metro Area This Evening? UPDATED WITH 2ND WARNING

  1. Echard says:

    Something’s gotta be wrong with the Portland radar. It’s raining like crazy here in Beaverton, but on KPTV’s radar nothing’s going on.

  2. Tanis Leach says:

    Heavy rain and lightning in Sherwood. Personal weather station was hit and has broke off the foundation. Surprisingly still works. Guessing 1 inch the last hour

  3. PAUL D says:

    Hillsboro just got POUNDED! Temperature dropped 5 degrees in 15 minutes.

  4. Roland Derksen says:

    I’ve heard a lot of reports of severe weather lately in the PNW, but over here, I’ve had very little of anything to talk about- even rainfall. Just a few light showers.

    • Roland Derksen says:

      Well, at least we had a close call here: Soon after I sent my letter yesterday, some pretty intense cells moved over Vancouver’s (BC) downtown section to the north with downpours causing street flooding. But as usual lately, I barely received a sprinkle.

    • Kyle Hill says:

      Welcome to the club! Want a drink?

  5. W7ENK says:

    Yes, a tornado was absolutely on the ground. You can see undeniable evidence of the rotating winds touching the ground, spiraled out in the pattern it left in that cornfield in the photo attached to your update.

    0.02″ on Saturday, 0.25″ yesterday, another 0.17″ overnight last night at my place in Milwaukie. Spent the weekend down in Southern Oregon, stayed with a friend at his place way out in the woods outside Chiloquin. Woke up to a refreshing 42 degrees on Saturday morning. I think that’s the coolest outside temperature I’ve felt in several months! I was shivering, but it felt so nice!

  6. Anonymous says:

    Have to say that the photo looks doggoned foreboding!

  7. JERAT416 says:

    Orchards supposedly had one touch down

  8. Larry says:

    Tornado warning! this time near downtown Vancouver and yes, it is confirmed.

  9. Joshua Lake Oswego says:

    Fun stuff. The dome is working overtime in my neck of the woods. One decent shower in the early afternoon and spotty light showers since.

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