textproduct: Pendleton

AVIATION...12Z TAFs

All sites will be affected by the incoming system and experience rain showers and or fog/mist through the period. Sub-VFR conditions are currently across all sites except YKM and PSC. However, a Prob30 for 1/2SM -RA BR has been put in for YKM between 15-17Z. CIGs will also flux between LIFR and VFR a this system continues across the region. A surface front will also accompany the system bringing sustained winds between 15-20 with gusts near 25 kts at sites PDT (20Z), RDM/BDN (16Z), ALW/PSC (06Z). 90

PREV DISCUSSION

/issued 251 AM PST Wed Nov 5 2025/

DISCUSSION...Observations have shown in the last couple of hours visibilities <= 1/4 mile for parts of Bend/Redmond/Pendleton/Mission. Went ahead and issued a fog advisory for Central Oregon and the Foothills of the Blue Mountains in Oregon. Not expecting fog too last long in the morning so went ahead and issued the advisory until 4 AM when winds will get a little stronger to hopefully mix the surface and lift the fog out of the area. If fog still persist closer to 4 AM, I might extend it for a few more hours later into the morning. For now, warm front has lifted and commences spotty showers across the parts of the Basin with the more widespread/heavy rain associated with the atmospheric river is situated near the Cascades and Gorge areas. Rain will continue to push through the area, delivering some precipitation throughout the region through Wednesday. As the system with the associated cold front passes through Wednesday, snow levels will rise 6000 to 8000 feet, leaving this a primarily rain event except for very high peaks/crests in the Cascades and Wallowa's.

With the approaching cold front passing through the region, breezy to windy conditions will develop across Central Oregon through the Blue Mountains & Foothills late Wednesday morning into Thursday with gusts up to 40 mph in some locations. The environment will remain showery with some development of thunderstorms across portions of the Columbia Basin through the Blue/Wallowa Mountains as instability increases coupled with CAM paintballs showing >40 reflectivity in locations Wednesday afternoon through the evening hours. Not expecting widespread severe activity as the SPC has us in a general thunderstorm outlook but also daytime heating seems a bit limited with the shorter days and lack of adequate cloud breaking prior to storm development.

A break in the active weather will be felt with dry conditions going through the weekend, as a ridge develops and amplify's shortly before pushing ashore sometime Saturday morning/afternoon hours. Precip chances drop to 0 for the most of the region going through the weekend, but may prove short-lived for before another shortwave makes its way in the beginning of next work week and develop showers across the region on Monday.

PRELIMINARY POINT TEMPS/POPS

PDT 62 44 63 42 / 70 60 40 100 ALW 60 47 62 45 / 80 80 60 100 PSC 57 43 63 42 / 80 30 30 90 YKM 54 37 58 37 / 100 60 70 90 HRI 59 44 63 43 / 70 40 40 90 ELN 50 34 52 33 / 100 70 70 100 RDM 59 36 58 34 / 80 60 50 90 LGD 59 40 57 40 / 90 70 60 100 GCD 60 41 57 41 / 90 60 40 100 DLS 58 45 60 45 / 100 90 90 100

PDT WATCHES/WARNINGS/ADVISORIES

OR...Dense Fog Advisory until 4 AM PST early this morning for ORZ507- 511.

WA...None.