Marine Weather and Tide Forecast for Moses Lake, WA

SYNOPSIS
Warmer temperatures into Monday before an increasing risk for elevated fire weather conditions from gusty winds through the middle of this week. Cooler temperatures and chances for showers increase late week.

DISCUSSION
Evening update to issue a Red Flag Warning for eastern Chelan county and Douglas county for Monday afternoon through Monday evening. The combination of dry conditions (relative humidity values dropping 10-20 percent) with breezy/gusty winds (15-25 mph and gusts up to 35 mph) will elevate fire weather concerns and could lead to rapidly spreading of fires should any ignite or already be burning. /Dewey

Previous Discussion (issued 354 PM PDT Sun June 15)...

Today through Sunday: Today is mild and very dry thanks to a shortwave ridge in place. Highs will peak in the 70s and 80s with relative humidities in the teens. There is a 10-15% chance of showers north of Highway 20 this afternoon in WA with terrain forcing. Monday will be dry, warm, and breezy as a wave crosses the Cascades in the afternoon. Temps will reach into the 80s with westerly winds around 10-20 mph gusting up to 30 mph. Debated red flag warnings for portions of central Washington (Wenatchee area, Waterville Plateau, and the western Columbia Basin) but the humidity/wind combo will have an hour or so mismatch. Southwest flow will increase ahead of a shortwave Tuesday night bringing small precip chances (15%) to the Cascade crest. The wave will pass through Wednesday bringing more breezy west winds. Wednesday has potential for some areas of central Washington to meet red flag conditions but PWATs will be a bit higher around 80-100% of normal so humidities are marginal. The deeper trough off the coast will slowly drift east late this week bringing cooler temperatures in the 60s-70s and chances for much needed rain to the INW. There is a 10- 30% chance of 0.25+" of rain in central WA, a 30-60% chance for eastern WA, and 60-80% chance for north Idaho from 5am Friday-5am Monday. The chances generally increase the more north and east you are. DB

AVIATION
06Z TAFS: VFR conditions through the next 24 hours. Increasing west/southwest winds around 21-00z tomorrow, especially in central Washington (EAT).

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence for VFR conditions. /Dewey

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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

For additional probabilistic information for NWS Spokane airports,please refer to the Aviation Dashboard on our webpage: https:/ www.weather.gov/otx/avndashboard

Preliminary Point Temps/PoPs
Spokane 51 84 51 79 52 81 / 0 0 0 0 0 0 Coeur d'Alene 51 83 51 79 52 80 / 0 0 0 0 0 0 Pullman 49 80 45 77 47 79 / 0 0 0 0 0 0 Lewiston 57 88 56 85 56 88 / 0 0 10 0 0 0 Colville 41 84 43 79 43 80 / 0 0 0 0 10 10 Sandpoint 47 83 49 79 48 78 / 0 0 0 0 0 10 Kellogg 56 81 54 77 54 78 / 0 0 0 0 0 0 Moses Lake 52 89 49 86 52 86 / 0 0 0 0 0 0 Wenatchee 59 87 56 84 57 83 / 0 0 0 0 0 0 Omak 52 87 50 84 51 85 / 0 0 0 0 0 0

OTX WATCHES/WARNINGS/ADVISORIES
WA...Red Flag Warning from 2 PM to 9 PM PDT Monday for Foothills of Central Washington Cascades (Zone 705)-Waterville Plateau (Zone 706).
ID...None.