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000
FNUS75 KBOI 250121
FWSBOI

Spot Forecast for Mill Creek RX...Forest Service
National Weather Service Boise ID
721 PM MDT Wed Apr 24 2024

Forecast is based on ignition time of 1000 MDT on April 25.
If conditions become unrepresentative...contact the National Weather
Service.

...DRY COLD FRONTAL PASSAGE LATE TONIGHT...
...SHOWERS LIKELY THURSDAY NIGHT...

.DISCUSSION...
Dry conditions tonight with a cold frontal passage expected around 10 PM.
This will keep the wind primarily out of the north-northwest overnight.
Thursday will be dry ahead of another frontal passage with higher
chances of precipitation during the evening. Minimum relative humidities
will hover around 35-45% in the afternoon which will increase rapidly
as the front approaches. The front and showers are expected to reach
the burn site between 8 PM and 10 PM. Precipitation could last well into
Friday morning. Breezy northwesterly winds will follow for Friday afternoon.
Showers area also possible though low confidence the burn site will see
any measurable rainfall.


.THURSDAY...

Sky/weather.........Mostly sunny.
Max temperature.....58 to 66.
Min humidity........37 to 42 percent.
CWR /0.10 inch/.....0 percent.
LAL.................1.
Wind - eye level....Northwest around 6 mph in the morning, shifting
                    to southwest 5 to 7 mph in the afternoon.
Mixing height.......6500 ft AGL.
Transport winds.....Southwest around 10 mph.
Haines Index........2 very low.
Ventilation index...650 good.

.THURSDAY NIGHT...

Sky/weather.........Rain showers likely in the evening, then rain
                    showers after midnight. Chance of showers 80
                    percent.
Min temperature.....41 to 46.
Max humidity........90 to 100 percent.
CWR /0.10 inch/.....50 percent.
LAL.................1.
Wind - eye level....Southwest up to 5 mph in the evening, shifting
                    to northwest up to 5 mph after midnight.
Mixing height.......700 ft AGL.
Transport winds.....West around 5 mph.
Haines Index........2 very low.
Ventilation index...35 poor.

.FRIDAY...

Sky/weather.........Rain likely in the morning, then a chance of
                    rain showers and a slight chance of
                    thunderstorms in the afternoon. Chance of
                    precipitation 80 percent.
Max temperature.....52 to 59.
Min humidity........55 to 60 percent.
CWR /0.10 inch/.....50 percent.
LAL.................1 in the morning, increasing to 2 in the
                    afternoon.
Wind - eye level....Northwest up to 10 mph with gusts up to 20 MPH.
Mixing height.......4500 ft AGL.
Transport winds.....Northwest around 10 mph.
Haines Index........3 very low.
Ventilation index...450 fair.

$$
Forecaster...Smith
Requested by...Ray Bilbao
Type of request...PRESCRIBED
.TAG 2412380.0/BOI
.DELDT 04/25/24
.FormatterVersion 2.0.0
.EMAIL ray.bilbao@usda.gov