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Friday-Saturday: messy weather, but a trend towards colder and snowier for the mountains

The best snow forecast for Mt. Hood. The best wind forecast for the Gorge.
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The Forecast

Mt. Hood Snow Forecast – 5000′
4a-8a 8a-12p 12p-4p 4p-8p 8p-4a
Friday
8000′->6000′
Saturday
6000′->8000′->500′
Sunday
500′->2500’*

Mt. Hood Weather Forecast

Things are finally starting to look up in the forecast. There’s a clear pattern shift in view. Systems have been coming from the SW recently, leading to warm, rainy weather. We’re about to see a shift (generally speaking) to the weather coming from the NW. Moisture supply can be intermittent in this pattern, but what does show up after the first half of next week should mostly be snow. Current two week forecast: (ECMWF/GFS). 12” accumulation: 100%/100%; 18”: 75%/75%. 24” 55%/45%.

Looking at Friday, we have clear sky all day. The free air freezing level will be 8000′ in the daytime and will fall to 6000′ overnight. Wind: light/variable this morning, SW 5-10 this afternoon, and WSW 30-45 after midnight. Saturday starts off clear and quickly adds clouds and precip. The snow level starts at 6000′, rises to 8000′, drops to 4500′ in the afternoon, and falls to 500′ overnight under clear sky. About 0.3” water equivalent is forecast before sunset. That’ll be rain and then snow. It’s followed by 0.1” WE overnight. Total snowfall: up to 2”. Wind: WSW 30-45 in the morning, W 50 in the afternoon (which could enhance snowfall, as that wind arrives after the temp drops), falling to NW 15-20 overnight.

Sunday looks clear, then high overcast, then snowy. The free air freezing level will be 0′ early, 1000′ in the afternoon. The snow level will be about 2000′ overnight (it’s complicated). About 0.3” WE is forecast, for 2-4” new. That’s also complicated. As a matter of fact, let’s talk about this: the Sunday night/Monday morning system is predicted in various ways by various models. The GFS is far more robust in terms of strength and precip than our other models. It also gives a near-perfect track for significant precipitation. That said, it’s also predicting mixed precip for at least half the total. Essentially, at this point, there’s no way to make a clear prediction about this weather system.

If we move on into the longer-range forecast, we see a cooler pattern. 850Mb (5000′) temps drop to the 0C to -5C range and stay there. That means incoming precip will fall as snow, and the snow that arrives will stay. Stay tuned for more details about Monday, and wax those skis.  

Gorge Wind Forecast

Friday starts light and variable. The wind turns to easterly at 20-25 mid-morning and holds through the evening. River flow is 61,100cfs, river temp is 50F, and high temp forecast is 47F. Saturday starts light and variable. As a cold front arrives, we’ll see strong westerlies. It’s unclear exactly how far eastward they will extend. Ensembles are all over the place. At the very least, there should be very gusty, drizzly westerlies at 20-35 from Multnomah Falls to Stevenson, likely to Viento, and possibly (about 30% of the models predict this) east to The Dalles. The eastern Gorge seems likely to remain calm. High temp: 47F. Sunday starts with westerlies at 12-15 and goes calm. Easterlies return Sunday evening.  

Coast, Jones, Coast

Done until spring, unless there’s an obvious Coast or Sauvie’s or Jones day.  

Hood River Weather Forecast

Partly high ov3ercast sky this morning stays similar today with plenty of sun. Temps will be in the upper 30’s early and upper 40’s later. Light and variable or calm wind. No rainbows. Saturday starts clear before sunrise and quickly adds some precip. Wet snow could mix in. Drizzle continues until 1pm or so. Temps will be in the mid 30’s early and upper 40’s later. Moderate westerlies. 99% chance of rainbows. Sunday will be clear, then high overcast, then wet overnight. Details are not clear. Temps will be in the low 30’s early and mid 40’s later. Light westerlies turn calm midday and easterly overnight. No rainbows.

Looking for a complete Columbia Gorge forecast? Looking for more humor in your weather? Obscenities? You’re looking for my TATAS: Temira’s Awesome Travel Advisory Service on Facebook.  

Cycling

FREEZE-THAW ALERT: if you notice that temps were below freezing last night and will be above freezing today, don’t ride any trail that’s not under a tree canopy. If you do so, you WILL do significant damage. DON’T DO IT! Plentiful rain recently means most tree-covered trails are muddy. Please don’t ride them either. If you do, you’ll be doing significant and possibly permanent damage. No really, please don’t. There are lots of gravel roads and lots of pavement you can ride instead. Enjoy!  

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By Temira

Temira Lital is a recreation and travel weather forecaster based in Hood River, Oregon. Temira uses they/them pronouns. They're also a mental health counselor. Temira bikes, skis, windsurfs, paddles a SUP, swims in mountain lakes, and loves gardening. Most recently they've taken up SUP foiling. Temira is powered by La Croix, protein, and beets.