Our area will expertise wildly gyrating climate extremes over the subsequent week.
Sure…there may be nonetheless chilly and snow within the forecast. However earlier than we benefit from the snowflakes, we are going to expertise a sturdy atmospheric river that can deliver very heavy precipitation to the mountains.
And to spice it up, sturdy winds and a rare rainshadow will happen over Puget Sound nation.
First, the atmospheric river. As proven beneath, a plume of wind-driven moisture, 1000’s of miles lengthy, will push into our area on Friday. The determine exhibits built-in water vapor transport–essentially how a lot water vapor is being transported by the wind. Let me guarantee you, these are massive values.
The large inflow of water vapor will likely be pushed upwards by our area’s mountains, producing intense precipitation. Beneath are the anticipated totals for twenty-four hr ending 5 PM Friday. Wow. A considerable space over 5 inches in each the Olympics and Cascades.
As with most atmospheric rivers, temperatures will likely be heat, with the freezing degree rising to round 6500 ft on Friday (sorry skiers). Observe that the snow degree is usually about 1000 ft decrease than the freezing degree. Greater elevations will get blasted with snow. And snow ranges will drop rapidly on Saturday.
The heavy rain ought to elevate river ranges considerably, with the Snoqualmie River reaching flood stage (see the forecast for the Snoqualmie River at Carnation offered by the NOAA/NWS River Forecast Heart in Portland)/
After which there will likely be wind. Check out the anticipated winds for two AM Friday morning (beneath): southerly gusts over 40 knots over a lot of the area’s waterways and 20-30 knots over land. As the primary main blow of the autumn, you possibly can count on energy outages.
For the reason that Friday occasion is so quickly, the boldness within the above forecast is nice.
I think you wish to know concerning the potential for snow subsequent week.
The anticipated snow whole by subsequent Saturday (November 12) by the US GFS mannequin exhibits huge snowfall over mountains of your entire West.
And sure, some snow over the lowlands of western Washington. A lot of this snow falls on Sunday by Tuesday. I’ll look at the snow and chilly in a lot better element in my subsequent weblog.
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Mr. Myers discusses how numerous, distributed actions (equivalent to farming strategies that cut back CO2 concentrations within the ambiance) can play an essential function in mitigating international warming. He even has a bit on my work with smartphone pressures. His important level is that native/regional actions or the appliance of “crowdsourced” applied sciences could make a giant contribution to coping with environmental points.
