140
FNUS75 KBYZ 180054
FWSBYZ

Spot Forecast for Sarpy...BIA
National Weather Service Billings MT
654 PM MDT Mon Aug 17 2026

Forecast is based on forecast start time of 1900 MDT on August 17.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...

Chances for showers and thunderstorms will continue through
midnight. Brief heavy rain and gusty and erratic winds to 40 mph
are the main threats. Good relative humidity recoveries are
expected tonight. Conditions Tuesday are expected to be similar to
today with a high temperature near 90 F and a minimum relative
humidly in the 20s %. Showers and thunderstorms are expected again
Tuesday afternoon and evening from 4 PM to 9 PM. Severe storms
are not expected. Torgerson


.REST OF TONIGHT...

Sky/weather.........Mostly cloudy. Slight chance of showers and
                    thunderstorms in the evening.
CWR.................10 percent.
Chance of lightning.21 percent.
Min temperature.....56-60.
Max humidity........80-84 percent.
Wind (20 ft)........
 Slope/valley.......North winds 5 to 10 mph in the evening
                    becoming light. Gusty and erratic winds
                    expected near thunderstorms in the evening.
 Ridgetop...........Northwest around 10 mph.
Mixing height.......Decreasing to 400 ft AGL overnight.
Transport winds.....Northwest around 10 mph.

.TUESDAY...

Sky/weather.........Mostly sunny.
CWR.................5 percent.
Chance of lightning.15 percent.
Max temperature.....86-90.
Min humidity........26-30 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northwest 5 to 10 mph gusting
                    to 18 mph in the afternoon.
 Ridgetop...........Northwest around 18 mph.
Mixing height.......Increasing to 9300 ft AGL in the afternoon.
Transport winds.....Northwest around 18 mph.

.TUESDAY NIGHT...

Sky/weather.........Mostly cloudy. Slight chance of showers and
                    thunderstorms in the evening.
CWR.................5 percent.
Chance of lightning.15 percent.
Min temperature.....54-58.
Max humidity........86-90 percent.
Wind (20 ft)........
 Slope/valley.......South winds up to 10 mph in the evening becoming
                    light. Gusty and erratic winds expected near
                    thunderstorms in the evening.
 Ridgetop...........West around 10 mph.
Mixing height.......Decreasing to 300 ft AGL overnight.
Transport winds.....West around 10 mph.

$$
Forecaster...Torgerson
Requested by...Sarpy Incident Commander
Type of request...WILDFIRE
.TAG 2619889.0/BYZ
.DELDT 08/17/26
.FormatterVersion 2.0.0
.EMAIL mtbdc@firenet.gov