Area Forecast Discussion
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
245 FXUS66 KPDT 140521 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1021 PM PDT Fri Jun 13 2025 .Updated Aviation Discussion AVIATION...06Z TAFS...VFR conditions to prevail through the period. Breezy winds around 15-20kts will continue through 08Z before weakening to around 12kts overnight...breezy winds will redevelop at site DLS after 17Z. Winds will remain 12kts or less through the period at all other sites...except sites RDM/BDN where winds around 12-15kts with gusts up to 20kts will develop around 00Z. Lawhorn/82 PREV DISCUSSION... /issued 125 PM PDT Fri Jun 13 2025/ SHORT TERM... Tonight through Sunday Night...Southwesterly flow will prevail over the region through the short term period. Several weak disturbances will move through the flow over the weekend. Any lingering precipitation over the eastern Oregon mountains should come to an end this evening. Dry conditions are expected through the period. However, some guidance is suggesting showers or even a few thunderstorms over the eastern mountains on Sunday. At this time, probabilities are very low (15%) but will need to see if chances increase over the next day or two. Breezy winds through this evening will decrease through the weekend, though there will still be some breezy locations Saturday, especially along the Cascade gaps. RH values are expected to remain in the 15 to 20 percent range in many of the lower elevation areas through the weekend. LONG TERM... Monday through Friday...Another weak disturbance/trough moves across the area on Monday. This system will bring some rain to the Cascades into Tuesday while the rest of the region remains dry. Zonal flow then develops into Wednesday, followed by a return to southwest flow Thursday into Friday. By the end of the extended period, a large low and trough is approaching the Pacific Northwest. Gusty winds are expected to redevelop Monday afternoon and then again Wednesday and by the end of the week with the approach of the upper low/trough. Winds will generally gust in the 25 to 35 mph range in the Cascade Gaps, Gorge, portions of the Basin, Kittitas Valley. On Monday, the NBM probabilities of wind gusts >=39 mph are generally 50 to 70 percent in these areas and a bit higher in the Kittitas Valley. On Wednesday, the values are slightly lower, about 40 to 60 percent. High temperatures look to be near normal through Wednesday then about 5 degrees below normal toward the end of the week. && .PRELIMINARY POINT TEMPS/POPS... PDT 49 81 52 85 / 20 0 0 0 ALW 53 80 56 85 / 20 0 0 10 PSC 50 83 52 88 / 10 0 0 0 YKM 49 83 51 87 / 0 0 0 0 HRI 49 84 52 88 / 20 0 0 0 ELN 49 80 51 85 / 0 0 0 0 RDM 36 78 42 82 / 0 0 0 0 LGD 46 78 51 81 / 30 0 0 0 GCD 43 81 50 83 / 20 0 0 0 DLS 49 80 52 86 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...77 LONG TERM....77 AVIATION...82