FNUS75 KBYZ 181439

FWSBYZ



Spot Forecast for Box Car...BLM

National Weather Service Billings MT

839 AM MDT Sat Jul 18 2026



Forecast is based on forecast start time of 0800 MDT on July 18. 

If conditions become unrepresentative...contact the National Weather

Service.



Please contact our office if you have questions

or concerns with this forecast.



.DISCUSSION...



Thunderstorms this evening will are expected to remain to the south, 

but an isolated thunderstorm is possible from 1700 through 2200 MDT 

this evening. A weak frontal passage is expected Sunday morning 

around sunrise creating northwesterly winds and a small chance (10%)

for a shower. Thunderstorms are again expected Sunday evening with 

similar timing. Main threats with any thunderstorm will be heavy rain, 

gusty winds and small hail. 

 



.REST OF TODAY...



Sky/weather.........Mostly sunny. Slight chance of showers and 

                    thunderstorms in the late afternoon.

CWR.................15 percent. 

Chance of lightning.15 percent. 

Max temperature.....94-98. 

Min humidity........26-30 percent. 

Wind (20 ft)........ 

 Slope/valley.......Southeast winds 5 to 9 mph with gusts to 18 mph

					in the morning. Gusty and erratic winds expected 

					near thunderstorms late afternoon.  

 Ridgetop...........South around 10 mph. 

Mixing height.......Increasing to 7800 ft AGL in the afternoon. 

Transport winds.....South around 12 mph. 



.TONIGHT...



Sky/weather.........Partly cloudy. Slight chance of showers and 

                    thunderstorms in the evening. 

CWR.................15 percent. 

Chance of lightning.18 percent. 

Min temperature.....68-72. 

Max humidity........64-68 percent. 

Wind (20 ft)........ 

 Slope/valley.......South winds 5 to 12 mph. Gusty and erratic winds 

                    expected near thunderstorms in the evening. 

 Ridgetop...........Southeast around 10 mph. 

Mixing height.......Decreasing to 500 ft AGL overnight. 

Transport winds.....South around 12 mph. 



.SUNDAY...



Sky/weather.........Sunny. Slight chance of showers and 

                    thunderstorms in the evening.

CWR.................15 percent. 

Chance of lightning.15 percent. 

Max temperature.....95-99. 

Min humidity........19-23 percent. 

Wind (20 ft)........ 

 Slope/valley.......West becoming northwest winds 5 to 12 mph. Gusty 

					and erratic winds expected near thunderstorms 

					late afternoon.

 Ridgetop...........Northwest around 10 mph. 

Mixing height.......Increasing to 9200 ft AGL in the afternoon. 

Transport winds.....Northwest around 9 mph. 



$$

Forecaster...Stetzer

Requested by...Michael Cobarrubias

Type of request...WILDFIRE

.TAG 2617662.0/BYZ

.DELDT 07/18/26

.FormatterVersion 2.0.0

.EMAIL mtmcc@firenet.gov