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Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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129 FNUS75 KTFX 132328 FWSTFX Spot Forecast for Black Canyon...DNRC County Assist Team National Weather Service Great Falls MT 528 PM MDT Tue Aug 13 2024 Forecast is based on forecast start time of 1730 MDT on August 13. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... A weak disturbance will continue to move over the fire area through this evening, bringing at least scattered showers and thunderstorms. These storms will produce frequent lightning, erratic gusts to 40 mph, brief heavy rain showers, likely with wetting rain, and possibly some hail up to one half inch in diameter. The threat for storms will then decrease overnight, but another chance for showers and storms will develop Wednesday afternoon, but these storms will likely not be as strong as those today. Otherwise, winds outside storms should remain light and temperatures will remain slightly below normal. Afternoon humidity will remain over 25 percent with good overnight recovery. -Coulston .REST OF TODAY... Sky/weather.........Cloudy (85-95 percent). Haze. Showers likely and chance of thunderstorms. CWR.................45 percent. LAL.................3. Max temperature.....75-80. Min humidity........25-30 percent. Wind (20 ft)........ Slope/valley.......West winds around 5 mph. Gusty and erratic winds expected near thunderstorms. Ridgetop...........Southwest around 15 mph. Haines Index........4 or low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy (65-75 percent). Haze in the evening. Rain showers likely and chance of thunderstorms in the evening, then slight chance of showers and thunderstorms overnight. CWR.................15 percent. LAL.................3 until 2400, then 2. Min temperature.....51-56. Max humidity........80-85 percent. Wind (20 ft)........ Slope/valley.......Northwest winds around 5 mph shifting to the south overnight. Gusty and erratic winds expected near thunderstorms. Ridgetop...........West around 15 mph. Haines Index........ .WEDNESDAY... Sky/weather.........Partly sunny (50-60 percent). Chance of rain showers through the day. Chance of thunderstorms in the afternoon. CWR.................15 percent. LAL.................1 until 1200, then 3. Max temperature.....68-73. Min humidity........33-38 percent. Wind (20 ft)........ Slope/valley.......Southwest winds around 5 mph shifting to the northwest in the afternoon. Gusty and erratic winds expected near thunderstorms in the afternoon. Ridgetop...........Northwest around 10 mph. Haines Index........2 or very low potential for large plume dominated fire growth. $$ Forecaster...Coulston Requested by...Tom Kohley Type of request...WILDFIRE .TAG 2420044.4/TFX .DELDT 08/13/24 .FormatterVersion 2.0.0 .EMAIL tom_kohley@firenet.gov,mtgdc@firenet.gov,tfx.ops@noaa.gov