Showers were already being observed in the Columbia Basin and Yakima Valley before 04:00 Monday thanks to an upper level low pressure system centered near Central Oregon. This pattern is pulling moisture up from the southeast in a setup similar to what occurs during monsoon season late in the summer. I’m labeling it a fake […]
Marginal (level 1/5) risk of severe weather for the Tri-Cities area on Wednesday
Monsoon moisture is surging into the Inland Northwest Tuesday evening as an upper level low spins off the coast of Oregon. On Monday, I reported that Wednesday was likely to see thunderstorm activity pushed eastward into Idaho and Utah because of how close the low was expected to be to the Washington coast. Updated models […]
Low chance of thunderstorms for the Tri-Cities area Tuesday
Over the next couple of days, the Columbia Basin is forecast to see highs in the 100s, prompting the National Weather Service to issue a heat advisory for the region. It is in effect from 12:00 Monday to 23:00 Tuesday. This heatwave is much smaller and shorter in comparison to the one at the end […]
Monsoon moisture moderated highs in the Columbia Basin on Sunday and Monday
On both Sunday and Monday highs in the Tri-Cities and surrounding areas came in below the forecast (though still quite hot) because of cloud cover. On Sunday these clouds were remnants of thunderstorm activity from the night before in the Blue Mountains and Central Oregon. On Monday, radar data showed some light shower activity trying […]