213 

FNUS76 KOTX 290203

FWSOTX



Spot Forecast for Hamilton Fire...USFS

National Weather Service Spokane WA

703 PM PDT Sun Jun 28 2026



Forecast is based on forecast start time of 0600 PDT on June 29. 

.DISCUSSION...



Winds tomorrow will continue to be gusty at 20-25 mph through much of 

the day before relaxing in the late evening. Chances of rain increase 

to 20-30 percent around 2000-2300 and stay that way overnight. This rain 

will result in little to no accumulation. Relative humidity will increase 

slightly tomorrow due to rain in the morning and again in the evening. 





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). 

***************************************************************



.MONDAY...



Sky/weather.........Mostly cloudy then becoming mostly sunny. 

CWR.................0 percent. 

Chance of lightning.5 percent. 

Max temperature.....79. 

Min humidity........35-40 percent. 

Wind (20 ft)........Northwest winds 10-15 mph with gusts 20-25 mph

                    after 1000. 

Mixing height.......Inversion breaking around 0900 and increasing to 

                    3500 ft AGL in afternoon. 

Transport winds.....Northwest 20-25 mph. 

Ventilation Index...Moderate (436) increasing to moderate (486) in 

                    the afternoon. 



.MONDAY NIGHT...



Sky/weather.........Mostly cloudy then becoming partly cloudy. 

                    Chance of rain showers into the evening and 

                    overnight. 

CWR.................0 percent. 

Chance of lightning.5 percent. 

Min temperature.....51. 

Max humidity........65-70 percent. 

Wind (20 ft)........Northwest winds 10-15 with gusts 20-25 mph decreasing 

                    to 8-12 mph around 2100. 

Mixing height.......Falling to near surface around 2100. 

Transport winds.....Northwest 20-25 mph decreasing to 8-12 mph around 2100. 

Ventilation Index...Moderate (300) decreasing to low (36) 

                    overnight. 



$$

Forecaster...AS/PDT

Requested by...Aana Kulaas

Type of request...WILDFIRE

.TAG 2616377.1/OTX

.DELDT 06/28/26

.FormatterVersion 2.0.0

.EMAIL aana.kulaas@usda.gov