838
FNUS76 KOTX 011703
FWSOTX

Spot Forecast for Hemlock Creek...USFS
National Weather Service Spokane WA
1003 AM PDT Tue Sep 1 2026

Forecast is based on forecast start time of 1000 PDT on September 01.
.DISCUSSION...

After another warm and generally dry today, a trend to much cooler
and wetter conditions arrives later tonight and for the next
several days. Winds will be on the light side through tomorrow,
except in the vicinity of any storms.


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 TODAY...
Sky/weather.........Partly sunny. Slight chance of showers late
                    in the afternoon.
CWR.................Less than 5 percent.
Chance of lightning.0 percent.
Max temperature.....Around 80.
Min humidity........Near 25 percent.
Wind (20 ft)........Light winds becoming south 5 to 7 mph in the
                    afternoon.
Mixing height.......3000 ft AGL increasing to 8000 ft AGL in the
                    afternoon.
Transport winds.....Southeast 6 to 13 mph.
Ventilation Index...Low (140) increasing to very high (1198) in the
                    afternoon.


.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of rain showers in the
                    evening, then rain showers likely overnight.
CWR.................0 percent.
Chance of lightning.10 percent.
Min temperature.....Around 45.
Max humidity........93 to 100 percent.
Wind (20 ft)........Southwest winds around 5 mph in the evening
                    becoming light and variable overnight.
Mixing height.......2000 ft AGL.
Transport winds.....Southeast 5 to 8 mph.
Ventilation Index...Moderate (227) decreasing to low (23)
                    overnight.


.WEDNESDAY...
Sky/weather.........Cloudy. Rain showers and slight chance of
                    thunderstorms.
CWR.................40 percent.
Chance of lightning.20 percent.
Max temperature.....Around 59.
Min humidity........80 to 90 percent.
Wind (20 ft)........Primarily south 3 to 7 mph. Gusty and erratic
                    winds expected near any storms.
Mixing height.......2000 ft AGL increasing to 2500 ft AGL in the
                    afternoon.
Transport winds.....South 7 to 10 mph.
Ventilation Index...Moderate (236).

$$

Forecaster...KD
Requested by...IDCDC
Type of request...WILDFIRE
.TAG 2621036.0/OTX
.DELDT 09/01/26
.FormatterVersion 2.0.0
.EMAIL idcdc@firenet.gov