Suppression Forecast
Issued by NWS Boise, ID

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FNUS75 KBOI 241400
FWSBOI

Spot Forecast for BOF Fire School 2018...Boise NF
National Weather Service Boise ID
800 AM MDT Thu May 24 2018

Forecast is based on ignition time of 0800 MDT on May 24.
If conditions become unrepresentative...contact the National Weather
Service.

...Continued threat of showers and thunderstorms through Friday...

.DISCUSSION...
An upper low that has been over the Great Basin the last few days
has finally lifted out of the area. This puts a brief upper ridge
over Idaho today. The airmass remains warm and moist, therefore
showers and thunderstorms remain in the forecast this afternoon.
Another upper low moves into the Sierras Mountains and Great Basin
Friday afternoon bringing much better chances of thunderstorms,
some of which could bring heavy rains and hail to the burn area
late in the afternoon and through the evening. Gusty winds can be
expected in the vicinity of thunderstorms each day.


.TODAY...

Sky/weather.........Partly sunny. Isolated showers this morning,
                    then scattered showers and thunderstorms in the
                    afternoon. Chance of precipitation 50 percent.
Max temperature.....71 to 76.
Min humidity........39 to 44 percent.
CWR /0.10 inch/.....20 percent.
LAL.................1 in the morning, increasing to 4 in the
                    afternoon.
Wind - eye level....Less than 3 mph in the morning, becoming
                    upslope/up valley around 3 mph this afternoon.
Mixing height.......6000 ft AGL.
Transport winds.....Southwest around 10 mph.
Haines Index........3 very low.
Ventilation index...600 good.

.TONIGHT...

Sky/weather.........Partly cloudy. A 30 percent chance of showers
                    and thunderstorms in the evening.
Min temperature.....46 to 51.
Max humidity........82 to 91 percent.
CWR /0.10 inch/.....10 percent.
LAL.................4 in the evening, decreasing to 1 after
                    midnight.
Wind - eye level....Less than 3 mph in the evening, becoming down drainage
                    around 3 mph by midnight.
Mixing height.......400 ft AGL.
Transport winds.....East around 5 mph.
Haines Index........3 very low.
Ventilation index...20 poor.

.FRIDAY...

Sky/weather.........Mostly sunny in the morning, becoming mostly cloudy
                    by the afternoon. A 40 percent chance of showers and
                    thunderstorms in the afternoon. Small hail is possible
                    with the thunderstorms.
Max temperature.....75 to 80.
Min humidity........30 to 35 percent.
CWR /0.10 inch/.....20 percent.
LAL.................1 in the morning, increasing to 4 in the
                    afternoon.
Wind - eye level....Light upslope wind around 3 mph in the morning becoming
                    upslope/up valley around 3 mph with gusts to 8 mph in less
                    sheltered locations in the afternoon.
Mixing height.......7000 ft AGL.
Transport winds.....South around 15 mph.
Haines Index........3 very low.
Ventilation index...1000 excellent.

$$
Forecaster...Redman
Requested by...Allyn Spanfellner
Type of request...PRESCRIBED
.TAG 1810612.0/BOI



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.