019
FNUS76 KOTX 200309
FWSOTX

Spot Forecast for Derby...WADNR
National Weather Service Spokane WA
809 PM PDT Sat Apr 19 2025

Forecast is based on forecast start time of 0700 PDT on April 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

A loosening gradient in the area will bring terrain driven winds
down the valley West-Northwest toward Cashmere. Winds will
increase with afternoon mixing bringing around 20 MPH around
1300PDT. A weak shortwave will begin to press into the Cascades
from the Western WA increasing cloud cover over the afternoon.
There is an increase rain threat but amounts are a trace or less.
The pattern is expected to last through Monday.

.SUNDAY...

Sky/weather.........Mostly sunny. Becoming partly cloudy in the
                    afternoon.
CWR.................5 percent.
Chance of lightning.0 percent.
Max temperature.....Around 59.
Min humidity........28 percent.
Wind (20 ft)........Northwest winds 8 to 12 mph. Gusts up to 20 mph
                    in the afternoon.
Mixing height.......4500 ft AGL increasing to 5500 ft AGL in the
                    afternoon.
Transport winds.....Northwest 18 to 22 mph.

.SUNDAY NIGHT...

Sky/weather.........Partly cloudy. Slight chance of rain showers in
                    the evening.
CWR.................5 percent.
Chance of lightning.0 percent.
Min temperature.....Around 37.
Max humidity........71 percent.
Wind (20 ft)........Northwest winds 6 to 8 mph.
Mixing height.......3500 ft AGL falling to 500 ft AGL decreasing to
                    500 ft AGL overnight.
Transport winds.....Northwest 11 to 16 mph.

.MONDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....Around 58.
Min humidity........27 percent.
Wind (20 ft)........Northwest winds 6 to 8 mph.
Mixing height.......5500 ft AGL increasing to 7000 ft AGL in the
                    afternoon.
Transport winds.....Northwest 15 to 19 mph.

$$
Forecaster...JCLEV
Requested by...Jakob Hoffer
Type of request...WILDFIRE
.TAG 2511079.0/OTX
.DELDT 04/19/25
.FormatterVersion 2.0.0
.EMAIL jakob.hoffer@dnr.wa.gov