Area Forecast Discussion
Issued by NWS Spokane, WA

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331 FXUS66 KOTX 170429 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 929 PM PDT Sun May 16 2021 .SYNOPSIS... Warm and dry weather is expected to continue into Monday with high temperatures in the upper 70s to mid 80s. A more robust cold front looks to arrive early Tuesday with much cooler temperatures for the middle to end of the week. There will also be an increasing chance of precipitation across the region. && .DISCUSSION... Another warm day is forecast for the Inland Northwest Monday with daytime temperatures once again climbing into the 70s and 80s for most locations. Increasing high clouds from the west will begin during the afternoon hours about the same time that breezy winds begin developing out of the southwest across mainly the Columbia Basin through the Palouse areas. Our approaching cold front and upper level trough system will move into the PacNW overnight into Tuesday. Our long stretch of warm days will begin to see a cooling trend take place after Monday through late week. This will bring some relief to area high elevation snow melt and some area rivers will see a break in rising levels (Okanogan County). See the latest ESF and RVS for more details. The next questions will be precipitation: how much, when, where? Ensemble guidance continues to paint precipitation chances across the Inland Northwest with the upper level pattern tracking south and slowly becoming a wrap-around Low to our south. This track is a bit more favorable for precipitation across eastern Washington/northern Idaho compared to the pure westerly track that gets shadowed more on this side from the Cascades. Ensemble forecasts are trending lighter with the precipitation compared to their deterministic counterparts. The overall trend looks cooler and much better chances of valley rain and mountain rain/snow showers with this cooler airmass for the week ahead. /Dewey && .AVIATION... 06Z TAFS: VFR conditions will continue the next 24 hours for area air fields. Southwest winds will begin to increase in strength between 15z - 18z Monday and continue through about 04z - 06z before relaxing overnight. High level cirrus will develop across northeast WA Monday afternoon. /Dewey && .PRELIMINARY POINT TEMPS/POPS... Spokane 52 80 49 63 39 59 / 0 0 0 10 10 10 Coeur d`Alene 51 79 48 63 37 58 / 0 0 0 10 10 10 Pullman 46 77 46 61 38 54 / 0 0 0 0 10 20 Lewiston 55 86 54 70 45 62 / 0 0 0 0 10 30 Colville 45 82 44 66 33 64 / 0 0 0 10 10 10 Sandpoint 47 77 48 61 35 59 / 0 0 0 20 10 20 Kellogg 52 75 49 58 40 54 / 0 0 10 10 10 30 Moses Lake 52 81 47 68 38 65 / 0 0 0 0 0 0 Wenatchee 58 79 48 63 40 62 / 0 0 10 10 0 10 Omak 51 81 48 67 36 63 / 0 0 10 10 0 10 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. && $$

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