Over the past week we’ve seen weather models predict a very high amplitude ridge building over the inter-mountain west. Initially the peak strength of this ridge was projected to be around late Wednesday but it has delayed and delayed until today where most of Northcentral Washington could see the hottest temperatures of the year so far. The stubborn ridge will slowly slide off to the east over the next couple of days as a trof of low pressure continues to dig in off of the Pacific Northwest coast.
It was a record-setting day across much of Northcentral Washington yesterday including Wenatchee who topped out at 105 degrees breaking the old record of 103. As previously mentioned, today could also be a record-breaker with Northcentral Washington high temperatures around 104-110 degrees. Wenatchee record for today is 105 degrees. In addition, winds will be breezy from southwest and increase later out of the northwest 10-15 mph.
The combination of near record heat and dry and breezy conditions with receptive fuels, new fire starts a distinct possibility over the next couple of days. The excessive heat warning expires tonight at 8:00 p.m.
Beyond today, the high amplitude ridge slowly shifts east allowing the weakening trof to finally push inland later in the weekend.
So, the upcoming weekend will remain hot as well, but not as hot, with afternoon high temperatures both days in the mid to upper 90’s. After an endless ridge of high pressure, a low will begin to nudge its way into the Inland Northwest bringing a “cold” front with it beginning on Monday.
Northcentral Washington next week can expect mostly sunny to sunny skies with afternoon high temperatures in the lower to mid 90’s.