575 FNUS55 KMSO 021013 FWFMSO Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho National Weather Service Missoula MT 413 AM MDT Thu May 2 2024 .DISCUSSION... Idaho (Zones 102 and 103): Cool temperatures will continue today as a few isolated showers are expected this afternoon and evening. A ridge will be sliding over the area Friday through Saturday, giving a short period of warming and drying. Then a significant low pressure system will settle back over the region Sunday through much of next week causing cool and showery conditions once again. Northwest MT (Zones 104 and 105): An exiting low pressure system will continue widespread precipitation especially near the Continental Divide today. A ridge will be sliding over the area Friday through Saturday, giving a short period of warming and drying. Then a significant low pressure system will settle back over the region Sunday through much of next week causing cool and showery conditions once again. West Central MT (Zones 106, 107 and 108): Cool temperatures will continue today as scattered showers are expected throughout the day. A ridge will be sliding over the area Friday through Saturday, giving a short period of warming and drying. Then a significant low pressure system will settle back over the region Sunday through much of next week causing cool and showery conditions once again. Southwest MT (Zones 109, 110 and 111): Cool temperatures will continue today as a few isolated showers are expected this afternoon and evening. A ridge will be sliding over the area Friday through Saturday, giving a short period of warming and drying. Then a significant low pressure system will settle back over the region Sunday through much of next week causing cool and showery conditions once again. View Fire Weather Briefing videos on our YouTube channel at https://www.youtube.com/NWSMissoula IDZ102-103-031015- Palouse/Hells Canyon-Clearwater/Nez Perce- 313 AM PDT Thu May 2 2024 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Slight chance of snow in the afternoon. Snow level 4000 feet. * Max Temperature.....55-65 valleys and 40-50 ridges. * Min Humidity........24-34 percent valleys and 31-41 percent ridges. * 20-Foot Winds....... * Lower Elevation......Becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............Southwest 5-10 mph becoming northwest in the afternoon. * Haines Index........3 Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost after midnight. * Min Temperature.....25-35. * Max Humidity........67-77 percent. * 20-Foot Winds....... * Lower Elevation......Northeast 5-10 mph. * Ridge Top............Northeast 10-15 mph. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....60-70 valleys and 48-58 ridges. * Min Humidity........19-29 percent valleys and 29-39 percent ridges. * 20-Foot Winds....... * Lower Elevation......Becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............North up to 5 mph becoming southwest 5-10 mph in the afternoon. * Haines Index........2 Very Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Mostly cloudy with chance of rain. Lows 40-50. Highs 60-70. Min humidities 35-45 percent. Southeast winds 5-15 mph. .SUNDAY...Cooler. Cloudy with rain showers. Lows 40-50. Highs 45-55. Min humidities 55-65 percent. West winds 5-15 mph. .MONDAY...Mostly cloudy with rain and snow. Lows 35-45. Highs 45-55. West winds 10-20 mph. .TUESDAY...Mostly cloudy. Snow and rain. Lows 35-45. Highs 45-55. .WEDNESDAY...Mostly cloudy. Snow likely and chance of rain showers. Lows 30-40. Highs 45-55. $$ MTZ104-105-031015- Kootenai-Flathead/Glacier Park- 413 AM MDT Thu May 2 2024 .TODAY... * Sky/Weather.........Mostly cloudy. Rain, snow showers and slight chance of thunderstorms in the afternoon. Snow level 4500 feet. * Max Temperature.....50-60 valleys and 38-48 ridges. * Min Humidity........27-37 percent valleys and 52-62 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph. * Ridge Top............North 5-15 mph. * Haines Index........2 Very Low. * LAL.................2. * CWR (> 0.10 Inch)...30 percent in the Kootenai...and 50 percent in the Flathead/Glacier Park. .TONIGHT... * Sky/Weather.........Mostly cloudy. Chance of rain showers, snow showers and slight chance of thunderstorms. Slight chance of snow after midnight. Widespread frost after midnight. Snow level 4000 feet. * Min Temperature.....23-33. * Max Humidity........74-84 percent. * 20-Foot Winds....... * Lower Elevation......North 10-15 mph. * Ridge Top............North 10-15 mph. * LAL.................2. * CWR (> 0.10 Inch)...10 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Chance of snow. Slight chance of rain in the afternoon. Snow level 4500 feet. * Max Temperature.....58-68 valleys and 43-53 ridges. * Min Humidity........17-27 percent valleys and 39-49 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............North 5-10 mph becoming northwest in the afternoon. * Haines Index........2 Very Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Partly cloudy. Lows 30-40. Highs 55-65. Min humidities 25-35 percent. East winds 10-15 mph. .SUNDAY...Mostly cloudy with chance of rain. Lows 40-50. Highs 50-60. Min humidities 50-60 percent. Northeast winds 5-15 mph. .MONDAY...Mostly cloudy with rain and snow likely. Lows 35-45. Highs 45-55. Southwest winds 15-25 mph. .TUESDAY...Mostly cloudy. Chance of rain and snow. Lows 35-45. Highs 40-50. .WEDNESDAY...Mostly cloudy. Snow likely and chance of rain. Lows 35-45. Highs 45-55. $$ MTZ106-108-031015- West Lolo-East Lolo- 413 AM MDT Thu May 2 2024 .TODAY... * Sky/Weather.........Mostly cloudy. Snow showers likely with possible rain showers and thunderstorms in the afternoon. Snow level 4500 feet. * Max Temperature.....50-60 valleys and 40-50 ridges. * Min Humidity........29-39 percent valleys and 39-49 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph. * Ridge Top............Northwest 5-15 mph. * Haines Index........3 Low. * LAL.................2. * CWR (> 0.10 Inch)...30 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Chance of rain showers, snow showers and slight chance of thunderstorms. Slight chance of snow after midnight. Widespread frost after midnight. Snow level 4500 feet. * Min Temperature.....25-35. * Max Humidity........79-89 percent. * 20-Foot Winds....... * Lower Elevation......North 10-15 mph. * Ridge Top............North 10-15 mph. * LAL.................2. * CWR (> 0.10 Inch)...20 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Slight chance of snow. Snow level 4500 feet. * Max Temperature.....55-65 valleys and 45-55 ridges. * Min Humidity........19-29 percent valleys and 32-42 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............North 5-10 mph. * Haines Index........2 Very Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Partly cloudy. Lows 30-40. Highs 60-70. Min humidities 20-30 percent. East winds 10-15 mph. .SUNDAY...Cooler. Mostly cloudy with chance of rain. Lows 40-50. Highs 50-60. Min humidities 45-55 percent. Northeast winds 5-15 mph. .MONDAY...Mostly cloudy with rain and snow likely. Lows 35-45. Highs 45-55. West winds 15-25 mph. .TUESDAY...Mostly cloudy. Chance of snow and rain. Lows 35-45. Highs 45-55. .WEDNESDAY...Mostly cloudy. Chance of snow and rain. Lows 30-40. Highs 45-55. $$ MTZ107-031015- Flathead Reservation- 413 AM MDT Thu May 2 2024 .TODAY... * Sky/Weather.........Mostly cloudy. Chance of rain and snow in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Snow level 4500 feet. * Max Temperature.....50-55 valleys and 35-40 ridges. * Min Humidity........39-49 percent valleys and 55-65 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............West 15-25 mph becoming northwest 10-15 mph in the afternoon. * Haines Index........2 Very Low. * LAL.................2. * CWR (> 0.10 Inch)...50 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Chance of rain showers, snow and slight chance of thunderstorms. Areas of frost after midnight. Snow level 4500 feet. * Min Temperature.....30-35 valleys and 20-25 ridges. * Max Humidity........76-86 percent. * 20-Foot Winds....... * Lower Elevation......North 5-10 mph. * Ridge Top............North 5-10 mph. * LAL.................2. * CWR (> 0.10 Inch)...10 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Areas of frost in the morning. * Max Temperature.....55-60 valleys and 40-45 ridges. * Min Humidity........21-31 percent valleys and 39-49 percent ridges. * 20-Foot Winds....... * Lower Elevation......Becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............Northwest 5-10 mph. * Haines Index........2 Very Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Partly cloudy. Lows 35-45. Highs 60-70. Min humidities 25-35 percent. East winds 10-15 mph. .SUNDAY...Mostly cloudy with rain likely. Lows 45-55. Highs 55-65. Min humidities 50-60 percent. North winds 5-15 mph. .MONDAY...Mostly cloudy with rain likely. Lows 40-50. Highs 50-60. Southwest winds 10-20 mph. .TUESDAY...Mostly cloudy. Chance of rain and snow. Lows 35-45. Highs 45-55. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Lows 35-45. Highs 50-60. $$ MTZ109-031015- Bitterroot- 413 AM MDT Thu May 2 2024 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Slight chance of snow in the afternoon. Snow level 4000 feet. * Max Temperature.....55-60 valleys and 40-45 ridges. * Min Humidity........21-31 percent valleys and 32-42 percent ridges. * 20-Foot Winds....... * Lower Elevation......Becoming northwest 5-15 mph in the afternoon. * Ridge Top............West 5-15 mph becoming northwest 5-10 mph in the afternoon. * Haines Index........3 Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Slight chance of snow. Widespread frost after midnight. * Min Temperature.....20-30. * Max Humidity........73-83 percent. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph in the evening becoming downslope/downvalley 2-5 mph. * Ridge Top............North 5-15 mph. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....60-65 valleys and 45-50 ridges. * Min Humidity........22-32 percent valleys and 35-45 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............Northwest 5-10 mph. * Haines Index........2 Very Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Partly cloudy. Lows 30-40. Highs 55-65. Min humidities 25-35 percent. Southeast winds 10-15 mph. .SUNDAY...Cooler. Mostly cloudy with chance of rain with possible snow and thunderstorms. Lows 40-50. Highs 45-55. Min humidities 45-55 percent. Southeast winds 5-15 mph. .MONDAY...Mostly cloudy with snow and rain likely. Lows 35-45. Highs 40-50. West winds 10-20 mph. .TUESDAY...Mostly cloudy. Chance of snow and rain. Lows 30-40. Highs 40-50. .WEDNESDAY...Mostly cloudy. Chance of snow and rain. Lows 30-40. Highs 45-55. $$ MTZ110-111-031015- Deerlodge/West Beaverhead-East Beaverhead- 413 AM MDT Thu May 2 2024 .TODAY... * Sky/Weather.........Partly cloudy. Chance of snow in the afternoon. * Max Temperature.....45-55 valleys and 35-40 ridges. * Min Humidity........20-30 percent. * 20-Foot Winds....... * Lower Elevation......West 10-20 mph. * Ridge Top............West 10-20 mph. * Haines Index........3 Low. * LAL.................1. * CWR (> 0.10 Inch)...10 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Chance of snow. * Min Temperature.....20-25. * Max Humidity........86-94 percent valleys and 79-89 percent ridges. * 20-Foot Winds....... * Lower Elevation......North 5-15 mph. * Ridge Top............North 5-15 mph. * LAL.................1. * CWR (> 0.10 Inch)...10 percent. .FRIDAY... * Sky/Weather.........Partly cloudy. Slight chance of snow. * Max Temperature.....50-55 valleys and 40-45 ridges. * Min Humidity........20-30 percent valleys and 26-36 percent ridges. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 5-15 mph. * Haines Index........3 Low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .SATURDAY...Partly cloudy. Lows 25-35. Highs 55-65. Min humidities 15-25 percent. Southeast winds 20-30 mph. .SUNDAY...Mostly cloudy with rain showers likely. Lows 40-50. Highs 50-60. Min humidities 35-45 percent. Southeast winds 20-30 mph. .MONDAY...Mostly cloudy with snow showers likely and chance of rain showers. Lows 35-45. Highs 45-55. West winds 10-20 mph. .TUESDAY...Mostly cloudy. Chance of snow showers. Lows 30-40. Highs 45-55. .WEDNESDAY...Mostly cloudy. Chance of snow showers. Lows 25-35. Highs 45-55. $$