475
FNUS76 KOTX 252013
FWSOTX

Spot Forecast for ASPEN...DNR
National Weather Service Spokane WA
113 PM PDT Mon May 25 2026

Forecast is based on forecast start time of 1300 PDT on May 25.

.DISCUSSION...

A cold front will move in this evening by 1800 PDT. Showers with
a chance for thunderstorms will move in over the Aspen Fire ahead
of the front. Lightning activity will decrease between 2000 and
2200 PDT this evening. Winds will see a sharp shift from southwest
to west-northwest with frontal passage and increase with gusts
up to 30 mph. Rainfall accumulations with showers tonight will
vary with location with a 10-20 percent chance of at least a
tenth of an inch. Tuesday will be cooler and cloudy.

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. A 20 percent chance of
                    showers and thunderstorms by 1700 PDT.
CWR.................0 percent.
Chance of lightning.5 percent.
Max temperature.....80.
Min humidity........24-28 percent.
Wind (20 ft)........South-Southwest winds 6 to 9 mph with gusts up
                    to 15 mph. Winds shifting west-northwest
                    between 1600 and 1800 PDT and increasing
                    13 to 16 mph. Gusts up to between 25 to 30 mph
                    in the evening by 1800 PDT. Gusty and erratic
                    winds with thunderstorms late in the
                    afternoon.
Mixing height.......7000 ft AGL.
Transport winds.....Southwest around 11 mph.
Ventilation Index...High (756).

.TONIGHT...

Sky/weather.........Cloudy. A 50 percent chance of rain showers
                    through the night. A chance of thunderstorms
                    through 2100 PDT.
CWR.................20 percent.
Chance of lightning.20 percent.
Min temperature.....Around 46.
Max humidity........80 percent.
Wind (20 ft)........West-Northweest winds 13 to 16 mph in the
                    evening becoming southwest 5 to 8 mph after
                    2300 PDT. Gusts up to between 25 to 30 mph
                    in the evening. Gusty and erratic winds with
                    thunderstorms late in the evening.
Mixing height.......4500 ft AGL falling to 1000 ft AGL.
Transport winds.....West 13 to 16 mph.
Ventilation Index...High (600).

.TUESDAY...

Sky/weather.........Mostly cloudy. A 20 percent chance of rain
                    showers through the day.
CWR.................5 percent.
Chance of lightning.5 percent.
Max temperature.....Around 65.
Min humidity........51 percent.
Wind (20 ft)........Wes-Southwest winds 5 to 7 mph.
Mixing height.......2000 ft AGL increasing to 3500 ft AGL in
                    the afternoon.
Transport winds.....West 7 to 9 mph.
Ventilation Index...Moderate (266).

$$
Forecaster...SVH
Requested by...WILLIAM HAVEN
Type of request...WILDFIRE
.TAG 2614428.0/OTX
.DELDT 05/25/26
.FormatterVersion 2.0.0
.EMAIL wanec@firenet.gov