Marine Weather and Tide Forecast for Moscow, ID

DISCUSSION
Tonight through Wednesday: With the region still under the influence of the ridge, stable, cold pattern will continue through the period. Upper level moisture topping the ridge will bring increasing mid to high level clouds to the Inland Northwest. These could produce isolated snow flurries through Tuesday morning. No accumulations are expected. Winds will see a brief increase during the afternoon hours with gusts into the mid teens. Temperatures are expected to increase slightly from the Monday lows. Highs will be in the upper 20s and low 30s. Lows will be in the teens and low 20s. A few ensemble members are showing some isolated pockets of single digits in the northern valleys. /JDC

Thursday through Sunday: A trough is expected to drop southward across the Inland Northwest from Thursday afternoon through Friday, which would bring chances for wintry precipitation.
Significant widespread snow accumulations aren't anticipated, though it should be cool enough to bring snow or at least a rain/snow mix into the lower valleys. Northern ID and the Cascades are most likely to see amounts exceeding 1". As we head into next weekend, clear, dry, and cold conditions are forecast under a northeasterly flow aloft. /KD

AVIATION
06Z TAFS: A weak upper level disturbance will move across Washington and north Idaho prior to sunrise. Members of the High Resolution Ensemble (HRRR) generate a band simulated reflectivity between 09-15z across the eastern third of Washington and north Idaho. Model soundings show very little deep moisture during this time frame, so it looks like flurries at most with no visibility restriction for GEG, SFF, COE, and PUW. Decreasing clouds are expected quickly following the passage of the disturbance Tuesday morning.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: The chance of flurries has been integrated into the TAFs with a PROB30 -SN for the airports along the Washington/Idaho border. NAM forecast soundings suggest the potential for a shallow layer of low clouds between 2000-4000ft around Spokane into north Idaho. It did something similar 24 hours and it didn't pan out. And similar to last night, the latest NAM is the only HRRR members to suggest low clouds. According to HRRR probabilities, there is only a 10 percent chance of ceilings below 3000 feet on Tuesday. /GKoch

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Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance

PRELIMINARY POINT TEMPS/POPS
Spokane 19 28 18 28 18 32 / 0 0 0 0 0 20 Coeur d'Alene 16 29 14 30 17 33 / 0 0 0 0 0 20 Pullman 20 29 20 32 22 36 / 0 0 0 0 0 10 Lewiston 22 35 23 36 26 41 / 0 0 0 0 0 10 Colville 14 27 13 26 14 29 / 0 0 0 0 0 20 Sandpoint 18 28 17 27 18 31 / 0 0 0 0 0 20 Kellogg 18 29 15 31 18 35 / 0 0 0 0 0 20 Moses Lake 22 31 22 32 22 34 / 0 0 0 0 0 0 Wenatchee 20 32 23 31 23 35 / 0 0 0 0 0 0 Omak 14 28 14 28 18 31 / 0 0 0 0 0 10

OTX WATCHES/WARNINGS/ADVISORIES
ID...None.
WA...None.