416 FXUS66 KPDT 022348 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 448 PM PDT Mon Jun 2 2025 .UPDATED DISCUSSION. .AVIATION DISCUSSION...00Z TAFs...VFR conditions prevailing for the entire period. Large area of ridging will keep weather conditions dry with light and variable winds (up to 12 knots). No VIS or CIG issues expected with the lowest CIGs being SCT skies at 25,000 feet. && .PREV DISCUSSION... /issued 137 PM PDT Mon Jun 2 2025/ SHORT TERM... Tonight through Wednesday night...Dry northwesterly flow will continue through the short term. A weak short wave will move across the region Tuesday night into Wednesday, but it has no moisture with it. High temperatures will warm a couple of degrees each day and will average about 5 degrees above normal through the period. LONG TERM... Thursday through Monday...The dry weather will continue through the period, with virtually no chances of rain. The northwesterly flow will continue through Friday before a ridge begins to build over the Pacific Northwest into early next week. There is still some discrepancy in the guidance as to how strong the ridge will be and how hot it gets over over the weekend and into early next week. However, temperatures will continue to rise at least into the mid to upper 90s across portions of the Columbia Basin, Blue Mountain Foothills, and Yakima Vally during this time. HeatRisk should be moderate at least. Some of the current guidance suggests that the Columbia Basin could see its first triple digit readings of the year. Of course, we are a week away, so things could change. By Saturday, the ECMWF EFI has values of 0.6 to 0.7 for high temperatures extending from central Oregon through the COlumbia Basin. On Sunday, the areal coverage increases to cover most of the states of Oregon and Washington and the values increase to between 0.7 and 0.8. This far out, the NBM probabilities of high temperatures >=100 degrees on Monday are between 20 and 30 percent. && .PRELIMINARY POINT TEMPS/POPS... PDT 46 79 49 82 / 0 0 0 0 ALW 50 77 54 81 / 0 0 0 0 PSC 48 84 50 86 / 0 0 0 0 YKM 49 82 51 85 / 0 0 0 0 HRI 47 83 51 85 / 0 0 0 0 ELN 48 79 50 82 / 0 0 0 0 RDM 38 76 40 79 / 0 0 0 0 LGD 42 74 45 77 / 0 0 0 0 GCD 41 75 43 79 / 0 0 0 0 DLS 50 80 53 80 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...77 LONG TERM....77 AVIATION...95