535
FNUS76 KOTX 171704
FWSOTX

Spot Forecast for Lightning Creek Fire...Northern Rockies Team 9
National Weather Service Spokane WA
1004 AM PDT Sun Aug 17 2025

Forecast is based on forecast start time of 0700 PDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

There will be a 25 percent chance for showers by early Monday
morning, and a 10 percent chance of embedded thunderstorms by late
Monday morning. Rainfall accumulations will be highly dependent
on where the cores of showers/storms pass through. Tuesday through
Friday will be dry under a ridge of high pressure with warming
temperatures and southwesterly afternoon winds becoming light and
downslope/downvalley overnight. Winds increase slightly for
Wednesday with ridgetop gusts 15 to 20 mph in the afternoon.

.MONDAY...

Sky/weather.........Partly sunny in the morning becoming mostly
                    sunny in the afternoon. A 25 percent chance of
                    rain showers in the morning decreasing after
                    noon PDT.
CWR.................5 percent.
Chance of lightning.10 percent.
Max temperature.....Valley bottom (3100 ft): 76.
                    Ridge tops (6100 ft): 64.
Min humidity........Valley bottom (3100 ft): 39 percent.
                    Ridge tops (6100 ft): 45 percent.
Wind (20 ft)........Lightning Creek drainage: West-northwest 2 to 5
                    mph after 1000 PDT.
                    Mid slopes/ridge tops: Southwest 6 to 9 mph
                    with gusts up to 13 mph in the afternoon.
Mixing height.......Inversion breaking around 1000 PDT. Increasing
                    to 6000 ft AGL in the afternoon.
Transport winds.....Southwest 9 to 13 mph.

.MONDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....54-57.
Max humidity........Valley bottom (3100 ft): 75 percent.
                    Ridge tops (6100 ft): 60 percent.
Wind (20 ft)........Downslope/Downvalley 2 to 5 mph after 2100 PDT.
Mixing height.......Falling to near surface after 2100 PDT.
Transport winds.....Southwest 5 to 7 mph becoming
                    downslope/downvalley around 4 mph after 2100
                    PDT.

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Valley bottom (3100 ft): 82.
                    Ridge tops (6100 ft): 70.
Min humidity........Valley bottom (3100 ft): 30 percent.
                    Ridge tops (6100 ft): 36 percent.
Wind (20 ft)........Lightning Creek drainage: West-northwest 3 to 6
                    mph after 1000 PDT.
                    Mid slopes/ridge tops: Southwest 5 to 8 mph with
                    gusts up to 12 mph in the afternoon.
Mixing height.......Inversion breaking around 1000 PDT. Increasing
                    to 6500 ft AGL in the afternoon.
Transport winds.....Southwest 8 to 12 mph.

.TUESDAY NIGHT...

Sky/weather.........Clear.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....53-56.
Max humidity........Valley bottom (3100 ft): 71 percent.
                    Ridge tops (6100 ft): 57 percent.
Wind (20 ft)........Downslope/Downvalley 2 to 5 mph after 2100 PDT.
Mixing height.......Falling to near surface after 2100 PDT.
Transport winds.....Southwest 6 to 9 mph becoming
                    downslope/downvalley around 4 mph after 2100
                    PDT.

.WEDNESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Valley bottom (3100 ft): 78.
                    Ridge tops (6100 ft): 66.
Min humidity........Valley bottom (3100 ft): 31 percent.
                    Ridge tops (6100 ft): 36 percent.
Wind (20 ft)........Lightning Creek drainage: West-northwest 5
                    to 8 mph after 1000 PDT.
                    Mid slopes/ridge tops: Southwest 7 to 10 mph
                    with gusts to 17 mph in the afternoon.
Mixing height.......Inversion breaking around 1000 PDT. Increasing
                    to 7500 ft AGL in the afternoon.
Transport winds.....Southwest 13 to 17 mph.

.FORECAST DAYS 4 THROUGH 5...
.THURSDAY...
Mostly clear. Lows in the lower 50s. Highs in the mid 60s
(ridge tops) to upper 70s (valley bottom). Light winds.
.FRIDAY...
Clear. Lows in the lower 50s. Highs in the lower 70s
(ridge tops) to lower 80s (valley bottom). Light winds.

$$
Forecaster...RFKS
Requested by...Autumn Ashdale
Type of request...WILDFIRE
.TAG 2519549.9/OTX
.DELDT 08/17/25
.FormatterVersion 2.0.0
.EMAIL 2025.lightningcreek.plans@firenet.gov,autumn_ashdale@firenet.gov