textproduct: Pendleton

KEY MESSAGES

- Dry conditions continue through the overnight hours with isolated freezing temperatures in the lower elevation areas.

- Pattern shifts through the week with periods of shower activity across the region.

- Cooler pattern develops through the week (50-70% chance) with high temperatures dropping down the low 50s in the lower elevated areas (50-70% chance).

DISCUSSION

Satellite advertises a low pressure system off the coast of the PacNW, bringing moderate to heavy showers west of the Cascades. Spillover is currently bringing some light returns on radar in the Cascades and we will see the line of showers continue to move east over the next 24 to 48 hours. Guidance is in good agreement the low pressure system to continue pushing to the east, bringing PoP's up to 20-40% across the Cascades and eastern slopes of the Cascades (including Central Oregon) through today. As the system moves along, it will bring the greatest chance of precip in the short term for the entire region (20-50% PoPs) Monday. NBM advertises the heaviest rains along the Eastern Mountains and parts of the Northern Blues where it's advertising wetting rains (>.1") through Tuesday morning (70-80% chance).

Synoptic ensembles paint a story that shows another shortwave dropping down from British Colombia through the mid-week that will bring another round of wet precipitation. Guidance is somewhat evenly split with impacts with the agreement on strength and location of the trough. Clusters through Thursday night advertise 48% of members showing a stronger/wetter pattern that mostly consist of the Euro and Canadian models, while the GFS solutions brings a drier solution to the table. Guidance becomes even more split by Saturday night with almost exactly 50% of members showing either an open wave/dry set-up or a more closed-off low with a wetter solution. Still plenty of time to monitor the set-up, but for now not seeing any immediate impacts to the area at this time.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

VFR conditions currently prevail through the period. Precip develops with PROB30's for RDM/BDN/YKM/DLS over the next 24-hours. Small chances persist (5-15%) for each site to temporary drop down to MVFR with some of the heavier showers bringing less than 3000 foot overcast skies at times. Breezy winds develop in RDM and BDN in the late morning hours through the afternoon, but guidance keeps most wind gusts less than 30 knots overall.

Preliminary Point Temps/PoPs

PDT 61 32 55 37 / 0 10 30 30 ALW 62 38 55 42 / 0 0 40 50 PSC 58 36 58 39 / 0 10 30 0 YKM 57 37 58 35 / 10 20 20 0 HRI 59 34 58 40 / 0 20 20 10 ELN 53 31 54 31 / 10 30 50 10 RDM 64 30 50 32 / 0 40 60 20 LGD 61 37 54 36 / 0 0 80 70 GCD 64 34 53 34 / 0 0 70 30 DLS 59 40 59 42 / 10 30 50 20

PDT WATCHES/WARNINGS/ADVISORIES

WA...None. OR...None.