<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=192888919167017&amp;ev=PageView&amp;noscript=1">
Thursday,  November 7 , 2024

Linkedin Pinterest
News / Clark County News

Weather Eye: Computer forecast models disagree; snow possible

By Patrick Timm
Published: February 3, 2019, 6:00am

Aw shucks! The groundhog saw his shadow locally yesterday with at least some brightness to cast a shadow. So, any complaints about our weather discussion can be forwarded to the proper prognosticators. Back on the East Coast, of course he didn’t see his shadow so we will have an early spring. Hmmm, I think spring begins on March 21 in either case.

Yes, we are discussing our first topic of snowfall here in the lowlands this winter. Since computer forecast models were still not agreeing on the finer details Saturday, I was watching the surface observations to our north.

In Northern and Northwest Washington, the dewpoints Saturday were falling into the 30s. This indicates drier air filtering out of British Columbia on northerly winds. This is one way to see if drier and potentially colder air is working its way southward.

On Saturday’s satellite, a low was dropping out of the Gulf of Alaska and heading toward the coast. Cold air was forecast to drop into the Columbia Basin and as the low drifts south off the coast toward Oregon, that will draw colder air west from the Gorge.

If the low stalls tonight off the coast, we could develop what I call the Clark County Convergence Zone. Warmer air to the south and colder air from the north would meet at the Columbia River and a deformation band would cause more precipitation to fall, bringing the cold air aloft to the surface. Yay. Snow.

Loading...