- There will be a brief period of freezing rain (glaze ice) anywhere between the Coast Range and Cascades at the lower elevations Wednesday morning, possibly as early as 6am, but no later than 9-10am.
- It will not last long (a few hours at most) away from the Columbia River Gorge. No matter what happens before 10am, after that time it’ll be too warm for any new areas of freezing except in the Gorge.
- It only takes 5-10 minutes of freezing rain to turn a dry road into an ice rink.
- The afternoon commute should be fine with temps well above freezing away from the Gorge.
- The Gorge won’t thaw until late afternoon or evening, that may include the far eastside metro near the Columbia River (Troutdale/Camas)
What’s New Since the Previous Posting at Noon?
- Timing of precipitation has been sped up slightly on some models, but not on others that came out this evening, it’ll be sometime between 6am-10am. Sorry, I can’t nail it down any more than that since our models have some disagreement. The main theme is LIGHT at first, just sprinkles to very light rain. Some of our models are still showing no precipitation until 9-11am.
- Temperatures look cold enough now near/below freezing before 9am, that whatever falls should freeze just about anywhere. There may have been some doubt about that earlier, but not now.
- Best case scenario: Morning commute just sees patchy icy areas with sprinkles, temps warm a few degrees, then regular steadier rain kicks in after 10-11am. with not too many road issues.
- Worst case scenario: An area of light rain moving right over the Valley at 6am, depositing ice all over roads and the morning commute is a hellish event with cars sliding all over the place before melting after 9-10am.
- Whatever happens should be somewhere between these two scenarios.
If ever there was a time to keep an eye on weather surveillance radar, tomorrow is it! My preference is this one. I don’t know why, but I usually go to that link. Of course we’ll be tracking things here at FOX12 starting at 4:30am.
And I’ll be back online around 7-8am as well…
Chief Meteorologist Mark Nelsen