Blewitt (Morning Mountain) snow report

285 FXUS66 KOTX 172301 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 401 PM PDT Sun May 17 2026 .KEY MESSAGES... - Scattered showers continue through Sunday evening, then return Monday afternoon and evening across the eastern third of WA and the ID panhandle. - Cold overnight temperatures will bring a threat of morning frost Monday. This could impact sensitive plants or crops. - Conditions trend drier and warmer through the workweek regionwide, with periodic breezy winds for the Cascades and central WA. && .SYNOPSIS... Diurnally forced showers with isolated afternoon thunderstorms will continue through Monday. Cold overnight temperatures will bring a threat of frost Monday morning. Precipitation chances decrease and afternoon highs trend warmer through the workweek, climbing back into the 70s and 80s by Thursday and continuing through next weekend. Breezy winds are expected at times through the Cascade gaps and across the western Columbia Basin. && .DISCUSSION... Sunday night through Monday: Shower chances will taper off overnight Sunday and skies will clear. Clear skies and light winds will allow for efficient radiational cooling at the surface, bringing a threat of frost Monday morning across the eastern third of WA and the ID panhandle. Now is a great time to cover or bring indoors any sensitive outdoor plants to protect them from potential frost damage. Convective showers and isolated thunderstorms will redevelop Monday afternoon as daytime surface heating steepens lapse rates. While temperatures aloft will begin to warm as an upper level trough shifts eastward, surface temperatures will also rise, keeping lapse rates sufficient for fueling weak convection. The greatest potential for afternoon showers and isolated storms Monday will be over the northern mountains and ID panhandle. Tuesday through Saturday: A pattern change brings a drying and warming trend for the mid to late week period. High temperatures are forecast to warm above seasonal normals by Wednesday, with highs returning to the 70s. Overnight lows will also gradually warm, decreasing the risk for morning frost. Afternoon westerly winds will pick up across the Cascades and into the western Columbia Basin on Tuesday and Thursday with gusts ranging from 25 to 35 mph. Heading into the weekend, ensembles show strong agreement on continued ridging over the Inland Northwest. This will continue to keep conditions dry and sustain the warming trend. Expect widespread afternoon highs climbing into the upper 70s to low 80s Friday and Saturday. /Fewkes && .AVIATION... 00Z TAFs: Diurnally forced showers with isolated thunderstorms will decrease after 03z this evening with the loss of daytime heating. Given the isolated nature of the thunderstorms did not include for any of the TAF sites, but will be monitoring radar closely for possible amendments for KGEG/KSFF/KCOE/KPUW. One storm near KGEG/KSFF is expected to move out between 2330z and 00z. Gusty outflow wind gusts up to 30-35 kts, and small hail remain the main impacts from these storms. VFR conditions are forecast through 00z Tuesday, although a moist boundary layer and clearing overnight may allow for patchy radiational fog to develop in the valleys of NE WA/N Idaho and will be looked at closer with the 06z TAF issuance. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: If showers and isolated thunderstorms significantly moisten the boundary layer this evening over NE WA/N Idaho and skies clear, then there would be a higher chance for radiational fog to impact these areas including KGEG/KSFF/KCOE. JW ----------------------- 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 37 66 41 69 44 71 / 30 0 0 0 0 0 Coeur d`Alene 38 64 41 67 44 69 / 50 10 20 0 0 0 Pullman 36 62 39 65 41 67 / 30 0 0 0 0 0 Lewiston 41 67 43 71 46 73 / 30 0 0 0 0 0 Colville 32 69 36 71 39 74 / 10 20 10 0 0 0 Sandpoint 37 63 41 66 45 68 / 50 30 10 0 0 0 Kellogg 36 62 39 65 42 68 / 20 30 10 0 0 0 Moses Lake 40 73 42 75 45 77 / 10 0 0 0 0 0 Wenatchee 46 72 47 74 50 77 / 40 10 0 0 0 0 Omak 42 72 43 75 47 77 / 10 0 10 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Frost Advisory from 2 AM to 7 AM PDT Monday for Northeast Mountains-Okanogan Highlands-Spokane Area-Washington Palouse. ID...Frost Advisory from 2 AM to 7 AM PDT Monday for Central Panhandle Mountains-Coeur d`Alene Area-Idaho Palouse- Northern Panhandle. && $$