Transitioning to Freezing Rain

4pm Sunday…

Two things are a bit different than I expected today.  But first…what worked out perfect…our first “snowy day” in Portland since February 2014.

SAVE_PortlandDowntownSnow_CliffPaguio

Pic by Clifford Paguio.  Snowy/icy roads are widespread (except where the wind blew the snow off the roads) across the area now.  Freeways melted a bit this afternoon with all the gunk thrown on them by ODOT, but they should freeze up again tonight.

The main band of precipitation was a bit later to arrive than I expected, by a few hours and of course most of the snow came from the earlier-than-expected first band of precip.

The other thing that’s a big different is always the toughest to forecast…when warmer air above pushes in and changes the snow to freezing rain, ice pellets, or a wintry mix of the 3.  That has already happened so we are mainly done with snow accumulation.  As a result the totals are at the low end of my 1-3″ forecast last night.  The heaviest snow seems to be from north Portland up through eastern Vancouver…up to 2″ in those spots:

MarkSnowTotals_Metro_OneMap

Now that we’ve transitioned to mainly freezing rain, roads are going to really get messy with temperatures remaining below freezing overnight.  Note all current metro area temps (and down into the valley) are below freezing.  The only above freezing spots are along the Cascade foothills in Clackamas and Marion counties…about where models said a warmer layer of air would push north.

PLOT_Temps_Metro

Expect widespread snow/ice still on roads for the Monday AM commute

More later…we have a newscast right after the Seahawks game in the next half hour or so and I need to get that prepped.

If you have a snow total more than 0.5″, let me know in the comments below.

Chief Meteorologist Mark Nelsen

63 Responses to Transitioning to Freezing Rain

  1. Laura says:

    What is wrong with you people?!?! Troutdale is NOT in the gorge!!!! Cascade Locks, Hood River, Stevenson, Carson, White Salmon ARE IN the Gorge! Troutdale is the start into the Gorge.

  2. schmit44 says:

    1/3/2016 Oregon (All) Temperature Summary

    Warmest:
    High:58 at BROOKINGS( 79 ft)
    Low: 44 at Port Orford(0 ft)

    Coldest:
    High:15 at CW1102 Wallowa(2946 ft)
    Low: -10 at UNITY DAM AND BU (3756 ft )

    Largest Diurnal Change: 41 degrees
    CW8673 Elgin (36/-5 ) (2782 ft )

    Heaviest Rainfall:
    0.70″ at SUMMIT LAKE(5610ft)
    0.69″ at HORSE CREEK(3402ft)
    0.65″ at Mt Hood Meadows(5380ft)
    0.60″ at HOGG PASS(4790ft)
    0.60″ at NEW CRESCENT LAK(4910ft)
    0.57″ at HEBOWX Mt. Hebo(3160ft)
    0.56″ at Timberline Lodge(5880ft)
    0.52″ at CEDAR(2220ft)

  3. Lurkyloo says:

    In ’04 my son fractured his elbow and my neighbor fell and broke her collar bone in conditions just like what we have now. Be careful, folks! Today was beautiful and a fun surprise, but tonight — ugh — watch your step!

  4. Katrina says:

    28 near skyline and Cornell, 800′, solid ice sheet over snow. Still raining lightly.
    We walked over to the next door neighbor’s house at 6 no problem, but getting back home at 9:00 saw me sliding all the way down concrete steps despite snow boots and caution. My husband had to put on shoe chains (yes that’s a thing) to very slowly escort some people home who live up just up the block. Wow! Looks like we’re not getting out of the neighborhood for a while.

  5. Dringus says:

    Thaw underway in Beaverton. Wonder if it will get cold enough tonight to refreeze….doubting it.

  6. halverbk says:

    Great call Mark. It was interesting in Corvallis with snow overnight then freezing rain & regular rain all day. Very slick on the lighter sidewalks while the darker ones were in better shape. Roads were okay in Corvallis and Salem. Heading up I-5 from 217 is where the slop started to move onto the road. Then the road became snow covered as I turned onto I-405 in South Waterfront. Sheet of ice on the sidestreet but navigable with 4WD. Very happy to be in PDX tonight.

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