331 FNUS76 KOTX 300002 FWSOTX Spot Forecast for Hamilton Fire...USFS National Weather Service Spokane WA 502 PM PDT Mon Jun 29 2026 Forecast is based on forecast start time of 0600 PDT on June 30. .DISCUSSION... Northwest wind will increase during the morning hours and gust 25-30 mph throughout the day. Relative humidity will lower during the afternoon to 30-35% with a maximum temperature of approximately 78. Some light showers will be in the vicinity during the afternoon but are not expected to bring wetting rains to the wildfire. Winds are expected to diminish during the evening allowing for relative humidity to recover to about 70% overnight. Expect winds to increase from the northwest again Wednesday and remain gusty through the afternoon hours. 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). *************************************************************** .TUESDAY... Sky/weather.........Mostly sunny. Isolated showers in the afternoon. CWR.................0 percent. Chance of lightning.5 percent. Max temperature.....Around 78. Min humidity........30-35 percent. Wind (20 ft)........Northwest winds 8 to 12 mph increasing to 14 to 20 with gusts to 28 mph by 1000. Mixing height.......4500 ft AGL increasing to 6500 ft AGL in the afternoon. Transport winds.....Northwest 9 to 13 mph. Ventilation Index...Moderate (400) increasing to high (533) in the afternoon. .TUESDAY NIGHT... Sky/weather.........Partly cloudy. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....Around 47. Max humidity........75-80 percent. Wind (20 ft)........Northwest winds 6 to 10 mph. Gusts up to 22 mph in the evening. Mixing height.......5500 ft AGL falling to 500 ft AGL. Transport winds.....Northwest 9 to 12 mph. Ventilation Index...High (539) decreasing to low (43) overnight. .WEDNESDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....Around 76. Min humidity........28-33 percent. Wind (20 ft)........Light winds becoming northwest around 5 to 10 mph with gusts to 18 mph after 2200. Mixing height.......5500 ft AGL increasing to 7500 ft AGL in the afternoon. Transport winds.....West 9 to 10 mph. Ventilation Index...Moderate (335) increasing to high (705) in the afternoon. $$ Forecaster...AB Requested by...Aana Kulaas Type of request...WILDFIRE .TAG 2616377.2/OTX .DELDT 06/29/26 .FormatterVersion 2.0.0 .EMAIL aana.kulaas@usda.gov