238
FNUS76 KPQR 302302
FWSPQR

Spot Forecast for Crale
National Weather Service Portland OR
402 PM PDT Thu May 30 2024

Forecast is based on ignition time of 0000 PDT on May 31.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...High pressure over the region which will keep
conditions clear and dry. Friday morning there is a temperature
inversion, with the tops around 1600 feet in elevation. This
inversion will lift around 1400 but there may be a weak inversion
still present above 4000 feet. This inversion rebuilds overnight
to similar levels but moister at the surface. Winds will generally
be terrain and diurnally driven with some gustier winds along the
ridgetops in the afternoon through the channeled terrain.
Humidity will recover well overnight but daytime humidity,
especially on Friday, will be quite low. Saturday`s conditions
will start to moisten as the high pressure weakens and a strong
front shifts eastward from the Pacific. With higher humidity
overnight and the surface inversion in place, there is a 20%
chance for patchy fog formation, especially in drainage bottoms.
Want to note that the incoming system which will arrive on Sunday
has the potential to produce a significant amount of wetting
rains.

For mixing heights, please see the official forecast of the
Oregon Department of Forestry.


.REST OF TONIGHT...

Sky/weather.........Clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 38.
Max humidity........93 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Upslope until after sunset when winds become light
less than 5 mph.
Mixing height.......900 ft AGL.
Transport winds.....Northeast around 4 mph.
Haines Index........4 (low).
Haines Index (Mid)..4 (low).

.FRIDAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 70.
Min humidity........48 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northwest around 5 mph in
                    the afternoon.
 Ridgetop...........Generally westerly 5 to 8 mph. Isolated gusts to
15 mph in the afternoon.
Mixing height.......3600 ft AGL.
Transport winds.....North around 6 mph.
Haines Index........4 (low).
Haines Index (Mid)..4 (low).

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy. Patchy fog overnight.
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 43.
Max humidity........95 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds around 5 mph in the evening
                    becoming light.
 Ridgetop...........West winds around 5 mph becoming light less
than 3 mph.
Mixing height.......800 ft AGL.
Transport winds.....Northwest around 5 mph.
Haines Index........4 (low).
Haines Index (Mid)..4 (low).

.SATURDAY...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 66.
Min humidity........60 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming west around 5 mph in the
                    afternoon.
 Ridgetop...........West-northwest winds 6 to 8 mph with gusts up to 17
mph in the afternoon.
Mixing height.......5300 ft AGL.
Transport winds.....West around 7 mph.
Haines Index........2 (very low).
Haines Index (Mid)..4 (low).

$$
Forecaster...Alviz/Muessle
Requested by...Wes Wentworth
Type of request...PRESCRIBED
.TAG 2415376.0/PQR
.DELDT 05/30/24
.FormatterVersion 2.0.0
.EMAIL wesley.wentworth@usda.gov