A low pressure system slowly moving offshore is forecast to spin moisture into the Columbia Basin Sunday as it meanders closer to the Southern Oregon Coast. This has prompted the National Weather Service to issue a winter weather advisory for the Tri-Cities, Walla Walla, Hermiston, and surrounding areas in effect from 04:00 to 22:00 Sunday. […]
Inversion conditions with low clouds and fog possible later this week
Colder temperatures are swinging into the Pacific Northwest out of British Columbia and Alberta with a brisk north to northeasterly breeze forecast on Tuesday. Those winds die down early Wednesday morning and despite mostly sunny skies temperatures aren’t likely to hit 40° that afternoon. Again under mostly clear skies, temperatures are forecast to get quite […]
Wind storm likely for the Columbia Basin and Spokane on Friday
Mostly dry weather (with a few isolated showers) comes to an end on Friday as an atmospheric river takes aim at the Pacific Northwest. This is likely to bring the first wind storm of the season to much of the region, including the Columbia Basin, Palouse, and Spokane area culminating during the afternoon hours. Current […]
Freeze warning for the Columbia Basin and Yakima Valley Thursday morning
Rain showers diminish Tuesday afternoon and evening, though a few isolated showers are possible during the day Wednesday. After that, skies are forecast to clear over the Columbia Basin allowing for temperatures to get below freezing in most lowland areas. This has prompted the National Weather Service to issue a freeze warning for everywhere in […]
The Tri-Cities got more rain in 22 hours than in the previous four months combined
Spring of 2022 was notoriously wet across the Pacific Northwest, but an abrupt pattern change in June left the region unusually dry through the rest of the summer and into the first half of fall. Some rain did fall during this time in the Tri-Cities, but from June 13 to October 20, only 0.39 inches […]
Rain and cooler temps expected with pattern change this weekend
The first half of October brought mostly sunny skies and warm temperatures to the Pacific Northwest as a persistent ridge of high pressure sat overhead, forcing the storm track into Southeast Alaska. The Tri-Cities have recorded ten days with highs at or above 80° so far this month, tying the record set in 1945. Temperatures […]
Late season heat advisory for the Lower Columbia and Yakima Valley
A building ridge of high pressure this week is forecast to bring a late-season heatwave to the Pacific Northwest. This has prompted the National Weather Service in Pendleton to issue a heat advisory from 11:00 to 20:00 Wednesday for the Lower Columbia Basin and Yakima Valley. This includes the Tri-Cities, Yakima, and Hermiston, but excludes […]
Tri-Cities no longer experiencing drought or abnormally dry conditions
For the first time since November 2019, the Tri-Cities is no longer listed as having drought or abnormally dry conditions according to the National Drought Mitigation Center, which maintains the U.S. Drought Monitor. The scale this center uses starts with abnormally dry (D0) then proceeds from moderate drought (D1) to exceptional drought (D4). At the […]
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 […]