148 FNUS76 KOTX 050458 FWSOTX Spot Forecast for Omak Lake...WA-CAC National Weather Service Spokane WA 958 PM PDT Thu Jun 4 2026 Forecast is based on forecast start time of 2200 PDT on June 04. .DISCUSSION... Tonight will be dry with variable clouds and winds from the southwest generally less than 10 mph. A dry cold front pushes across the fire Friday between 0900-1200, leading to an increase in winds through the day, peaking between 1300-2000. An upper system moves in Saturday with a chance for showers and thunderstorms and additional breezy conditions. The potential for wetting rains is low. The chance for t-storms Saturday is around 20% between 1100-1700. If conditions become unrepresentative, contact the National Weather Service. *************************************************************** Forecasts for 20 foot wind speeds (valleys and ridge tops) are 10 minute averages reflecting RAWS wind. ***Ventilation Index is derived from transport wind multiplied by the mixing height divided by 100. Categories: low (< 200), moderate (200-500), high (500-800), and very high (> 800). *************************************************************** .REST OF TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....Around 47-50. Max humidity........54-59 percent. Wind (20 ft)........Southwest winds 4 to 8 mph. Mixing height.......500 ft AGL. Transport winds.....Southwest 8 to 11 mph. Ventilation Index...Low (46). .FRIDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 64-68. Min humidity........26 percent. Wind (20 ft)........Southwest winds 5 to 10 mph in the early morning... increasing to 12 to 17 mph with gusts to around 25 mph after 1000. Mixing height.......8500 ft AGL in the afternoon. Transport winds.....Southwest 12 to 20 mph. Ventilation Index...Very high (898) increasing to very high (1369) in the afternoon. .FRIDAY NIGHT... Sky/weather.........Mostly clear. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....Around 44. Max humidity........61 percent. Wind (20 ft)........Southwest winds 10 to 18 mph with gusts to around 26 mph...decreasing to 5 to 10 mph overnight. Mixing height.......7500 ft AGL falling to 500 ft AGL. Transport winds.....Southwest 7 to 16 mph. Ventilation Index...Very high (1280) decreasing to low (32) overnight. .SATURDAY... Sky/weather.........Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. CWR.................5 percent. Chance of lightning.20 percent. Max temperature.....Around 57-62. Min humidity........42-46 percent. Wind (20 ft)........West winds 6 to 9 mph. Gusts up to 20 mph in the afternoon. Gusty and erratic winds expected near thunderstorms in the afternoon. Mixing height.......6500 ft AGL. Transport winds.....West 9 to 11 mph. Ventilation Index...High (661) increasing to high (674) in the afternoon. $$ Forecaster...MSC Requested by...IC Covington Type of request...WILDFIRE .TAG 2615006.0/OTX .DELDT 06/04/26 .FormatterVersion 2.0.0 .EMAIL twila.leith-monaghan.mtf@colvilletribes.com