Harts Pass HRPW1

Canada, Okanogan, WA | 6330ft

CalTopo

NWS Point Forecast

Current conditions

Air temperature

62F

Snow depth

0.0in

Snow water equivalent

0.3in

Percipitation accumulation

34.8in

Wind

N direction

0.0mph speed

9.6mph gust

A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 55. North wind around 7 mph.

Red Flag Warning

Forecast discussion

180 FXUS66 KOTX 302350 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 450 PM PDT Wed Jul 30 2025 .KEY MESSAGES... - High Temperatures 90s to 100s through Thursday with Moderate and Major HeatRisk. - Isolated thunderstorms today. Scattered, wet and dry thunderstorms on Thursday and scattered, wet thunderstorms on Friday. - Gusty winds and lightning primary hazards for Wednesday into Thursday with a transition to heavy rainfall, hail, and gusty winds Thursday afternoon into Friday. && .SYNOPSIS... Temperatures be very warm through Thursday with highs in 90s and low 100s. Isolated thunderstorms on Wednesday over the mountains will bring a risk for new fire starts. There are increasing chances for wet thunderstorms with gusty winds and isolated hail Thursday and Friday. && .DISCUSSION... Today through Friday: The focus for the next couple days will be thunderstorms thanks to a shortwave trough currently located on the California/Nevada border. Thunderstorm development today will be more limited with little synoptic support and mostly confined to higher terrain, especially near the Canada border. With weak steering flow, cells that have developed today are moving less than 10 mph and have produced torrential downpours with estimated rainfall rates around 0.75-1.25"/hr, hail size up to a half an inch, and outflow winds up to 40 mph. With weak deep layer shear, cells have been going up and down within an hour. Storms should dwindle quickly this evening. There is still a red flag warning out until 9 PM this evening in portions of Chelan County for hot, dry, and unstable conditions with a small chance (10%) of dry thunderstorms. The trough will continue to move north into northern NV tonight but not expecting any nocturnal thunder activity. Instability tomorrow looks fairly impressive around 750-1500 J/kg around much of the INW. With tall inverted-V soundings present, gusty outflow winds up to 50 mph will be possible. There is also a flash flood threat for the burn scars. Slower moving storms will be capable of 1+"/hr rainfall rates. There is a red flag warning out from 11 am to 8 PM Thursday for abundant lightning in portions of central and northern WA. A mix of wet and dry thunderstorms combined with dry fuels may lead to new fire starts and the gusty outflow winds may cause rapid fire spread. Thunderstorm chances Friday will be greatest in northeast Washington and north Idaho (40-60% chance). With PWATs 160-200% of normal, there will still be some flash flood threat especially near burn scars. Saturday through Wednesday: Temperatures this weekend will be cooler in the 80s and low 90s. There is still a threat for thunderstorms Saturday and Sunday mostly in northeastern Washington and north Idaho with deep southwesterly flow present and a conditionally unstable airmass. The beginning of next week continues to look unsettled with below normal temperatures. DB && .AVIATION... 00Z TAFS: Generally VFR conditions prevail. The atmosphere is warm and unstable which is resulting in thunderstorm development this afternoon. There is a 10% chance for a thunderstorm from 0z-4z for KGEG-KSFF-KCOE-KPUW-KMWH. Storms could bring brief MVFR visibility. More expansive thunderstorm development is expected around 21-04z tomorrow beginning in central Washington and slowly initiating in eastern WA and north Idaho around 0z. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions through the TAF period. Low confidence for thunderstorms impacting TAF sites. && .FIRE WEATHER... A Red Flag Warning is in effect for Fire Weather Zone 696 from Wednesday until 9 PM due primarily for hot and unstable conditions. Southerly flow will allow for elevated moisture to advect into the Cascades with PWATs increasing to 0.60-0.70 inches (~120%) of normal on Wednesday. Very warm temperatures with highs in the 80s and very steep low level lapse rates (8-10C/km) will support deep mixing with mixing heights 12k-13k feet AGL over the Cascades. Additionally, there will be a small risk (15%) chance for isolated thunderstorms. The boundary layer will be very dry with deep inverted-V soundings that support mostly dry thunderstorms if development occurs. These sounding profiles also indicate the potential for gusty and erratic outflow winds. A red flag warning has been issued for the North Cascades to the Okanogan Highlands for Thursday where there is increasing confidence for scattered thunderstorms. Very warm and dry conditions at the surface suggest decreased probabilities for wet storms though a few cores will be capable of wetting rains. Gusty outflow winds will be a major concern near heavier cells. This activity will be capable of abundant lightning and new fire starts, especially in dry fuels where last week`s thunderstorm activity skipped over. && .Preliminary Point Temps/PoPs... Spokane 66 98 64 85 62 85 / 20 20 40 50 40 30 Coeur d`Alene 67 97 63 83 62 83 / 20 20 50 60 50 40 Pullman 60 93 58 80 57 83 / 20 20 50 40 40 20 Lewiston 70 101 69 88 67 93 / 20 20 50 50 30 20 Colville 56 96 54 88 53 80 / 20 20 40 60 60 50 Sandpoint 62 93 58 83 58 77 / 20 20 40 70 60 50 Kellogg 68 94 63 80 63 79 / 20 20 50 60 50 40 Moses Lake 68 101 66 90 62 91 / 20 20 30 30 20 10 Wenatchee 75 99 72 89 68 90 / 20 30 40 40 20 10 Omak 69 100 66 91 65 91 / 20 30 30 50 40 20 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Red Flag Warning from 11 AM to 8 PM PDT Thursday for Colville Reservation (Zone 702)-East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697)-East Washington Central Cascades (Zone 696)-East Washington North Cascades (Zone 698)-Methow Valley (Zone 704)-Okanogan Highlands and Kettle Mountains (Zone 699)- Okanogan Valley (Zone 703). Red Flag Warning until 9 PM PDT this evening for East Washington Central Cascades (Zone 696). ID...None. && $$