701
FNUS76 KPQR 010211
FWSPQR

Spot Forecast for Letsom Mt...ODF
National Weather Service Portland OR
711 PM PDT Fri May 31 2024

Forecast is based on forecast start time of 2000 PDT on May 31.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...High pressure today will weaken through Saturday
with clouds filling in Saturday afternoon. High temperatures have
been reached for the day and will cool overnight. Cooler
temperatures likely due to clearer skies. Favorable overnight
recoveries with a weak inversion forming from around 900 ft to
2000 ft above sea level. On Saturday night, a warm and moist front
will near the area. Expecting heaviest rainfall to hold off until
Sunday, but humidity will rise considerably during the day. Winds
will remain generally westerly to southwesterly with a
northeasterly downslope land-breeze.


.REST OF TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 47.
Max humidity........89 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds around 5 mph early in the
                    evening becoming light.
 Ridgetop...........Northeasterly 5 to 7 mph with isolated gusts
to 10 mph becoming light less than 5 mph
after 0400.
Mixing height.......700 ft AGL.
Transport winds.....West around 8 mph.
Haines Index........4 (low).
Haines Index (Mid)..4 (low).

.SATURDAY...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
LAL.................1.
Max temperature.....Around 71.
Min humidity........53 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming west around 5 mph in the
                    afternoon.
 Ridgetop...........West winds 6 to 9 mph with gusts up to 15 mph.
Exposed areas will see higher wind speeds.
Mixing height.......3900 ft AGL.
Transport winds.....West around 8 mph.
Haines Index........3 (very low).
Haines Index (Mid)..4 (low).

.SATURDAY NIGHT...

Sky/weather.........Mostly cloudy. Patchy fog overnight in the valleys.
Chance of rain overnight.
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 52.
Max humidity........93 percent.
Wind (20 ft)........
 Slope/valley.......West winds around 5 mph in the evening becoming
                    light.
 Ridgetop...........West winds around 5 mph becoming south. Winds up
to 10 mph in north-south aligned drainages.
Mixing height.......700 ft AGL.
Transport winds.....Southwest around 9 mph.
Haines Index........2 (very low).
Haines Index (Mid)..4 (low).

$$
Forecaster...Alviz/Muessle
Requested by...Brandy Simmons
Type of request...WILDFIRE
.TAG 2415446.0/PQR
.DELDT 05/31/24
.FormatterVersion 2.0.0
.EMAIL westernlanedispatch@odf.oregon.gov, brandy.l.simmons@odf.oregon.gov