730
FNUS75 KBYZ 182136
FWSBYZ

Spot Forecast for Columbus Creek...Emergency Manager
National Weather Service Billings MT
336 PM MDT Tue Aug 18 2026

Forecast is based on forecast start time of 1600 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Scattered showers and thunderstorms will continue to move
eastward over/near the fire site this afternoon and early evening
before coming to an end around 2200 MDT this evening. A few
thunderstorms may become strong to severe. The main threat with
any strong to severe thunderstorm is strong wind gusts up to 65
mph, with isolated stronger gusts possible (medium chance).
Thunderstorms will also be capable of producing brief heavy rain
and hail. Outside of thunderstorm winds, winds will generally be
light and variable. Warm and dry conditions return Wednesday. LA

.REST OF TODAY...

Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms.
CWR.................40 percent.
Chance of lightning.35 percent.
Max temperature.....79-83.
Min humidity........27-31 percent.
Wind (20 ft)........
 Slope/valley.......Variable 5 to 8 mph. Gusty and erratic
                    winds expected near thunderstorms.
 Ridgetop...........West 10 to 15 mph.
Mixing height.......Increasing to 4500 ft AGL in the afternoon.
Transport winds.....West around 10 to 15 mph.

.TONIGHT...

Sky/weather.........Becoming mostly clear. Chance of rain showers
                    and slight chance of thunderstorms in the evening.
CWR.................10 percent.
Chance of lightning.20 percent.
Min temperature.....56-60.
Max humidity........68-72 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 4 to 8 mph in the evening
                    becoming light overnight. Gusty and erratic winds
                    expected near thunderstorms in the evening.
 Ridgetop...........West 5 to 15 mph.
Mixing height.......Decreasing to 500 ft AGL overnight.
Transport winds.....West 5 to 10 mph.

$$
Forecaster...Arends
Requested by...Jesse Ludikhuize
Type of request...WILDFIRE
.TAG 2619969.0/BYZ
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL jludikhuize@sheridancountywy.gov