Area Forecast Discussion
Issued by NWS Spokane, WA
Issued by NWS Spokane, WA
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617 FXUS66 KOTX 100912 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 212 AM PDT Wed Jul 10 2024 .SYNOPSIS... Fire weather concerns will increase today as widespread triple digit heat, with breezy to gusty winds return late this morning. Slightly cooler temperatures arrive Thursday and Friday, before warming up again this weekend. && .DISCUSSION... ...ONE MORE DAY OF NEAR-RECORD HEAT WEDNESDAY... ...INCREASED FIRE WEATHER DANGER WEDNESDAY... Key messages for the rest of the week: - Red Flag Warnings continue for parts of the region today. - Temperatures cool by 5 to 10 degrees Thursday, warming again heading into the weekend. - No precipitation is in sight. Wednesday: Strong high pressure will continue for one more day, with hot and dry conditions across the Inland NW, with most locations seeing temperatures somewhere between 100 and 110. A cold front will push through the area, with increasing winds and dry air ahead. Winds will increase late this morning, with gusts up to 30 mph in the lee of the Cascades and Waterville Plateau, decreasing as you move east towards Spokane. Relative humidity will drop into the single digits to low teens across the region. Smoke from the Pioneer Fire will result in poor air quality near Lake Chelan, with haze extending over much of the region. Areas outside of there are likely to see hazy skies but most smoke will remain above the surface. Nighttime lows tonight will cool back into the 60s, several degrees cooler than previous nights. With the combination of heat, wind, and dry air, a Red Flag Warning continues through today for the Cascades and Pioneer on Wednesday, extending into the lee of the Cascades due to increasing winds as a cold front passes over. Elevated instability will bring a slight concern for dry lightning. Thursday through Tuesday: Behind the front will be slightly cooler temperatures for Thursday, with temperatures 5 to 10 degrees cooler. This will drop most of the high temperatures into the 90s to low 100s. With this cooldown, those without an AC will have a better chance to cool off their house as nighttime lows will drop into the 50s and 60s. Temperatures look to rebound to end the week, warming back up into the upper 90s to low 100s as weak ridging builds in again. This will be short-lived as a low in Canada will help flatten the ridge on Monday, allow temperatures to cool back into the 90s, similar to Thursday. /KM && .AVIATION... 06Z TAFS: VFR conditions will prevail. Local reductions in visibility possible near and downwind of Lake Chelan due to smoke from the Pioneer Fire. Breezy to gusty westerly winds expected after 18Z Wednesday, particularly at KEAT and KMWH. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions. ----------------------- 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 104 64 96 61 97 62 / 0 0 0 0 0 0 Coeur d`Alene 101 62 93 59 95 60 / 0 0 0 0 0 0 Pullman 99 61 91 59 94 60 / 0 0 0 0 0 0 Lewiston 109 72 101 67 103 69 / 0 0 0 0 0 0 Colville 101 55 95 54 95 55 / 0 0 0 0 0 0 Sandpoint 97 60 91 55 92 56 / 0 0 0 0 0 0 Kellogg 97 67 90 64 93 65 / 0 0 0 0 0 0 Moses Lake 107 62 99 60 100 62 / 0 0 0 0 0 0 Wenatchee 104 67 98 66 99 67 / 0 0 0 0 0 0 Omak 107 64 101 65 102 65 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...Heat Advisory until 10 PM PDT this evening for Central Panhandle Mountains-Northern Panhandle. Excessive Heat Warning until 10 PM PDT this evening for Coeur d`Alene Area-Idaho Palouse-Lewis and Southern Nez Perce Counties-Lewiston Area. WA...Heat Advisory until 10 PM PDT this evening for Northeast Mountains-Okanogan Highlands-Western Chelan County. Excessive Heat Warning until 10 PM PDT this evening for Central Chelan County-Lower Garfield and Asotin Counties-Moses Lake Area-Northeast Blue Mountains-Okanogan Valley-Spokane Area- Upper Columbia Basin-Washington Palouse-Waterville Plateau- Wenatchee Area-Western Okanogan County. Red Flag Warning from 2 PM this afternoon to 11 PM PDT this evening for East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697)-East Washington Central Cascades (Zone 696)-Foothills of Central Washington Cascades (Zone 705)-Methow Valley (Zone 704)- Okanogan Valley (Zone 703)-Waterville Plateau (Zone 706)- Western Columbia Basin (Zone 707). && $$