Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
657 FNUS55 KMSO 210952 FWFMSO Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho National Weather Service Missoula MT 352 AM MDT Tue May 21 2024 .DISCUSSION... Idaho (Zones 102 and 103): Isolated showers will continue to move through the region today as temperatures warm to seasonal averages. Then Wednesday into Thursday a strong low pressure system will bring widespread precipitation and cooler temperatures. A second low pressure system is now expected for Saturday. A ridge of high pressure appears to build over the region the first part of next week causing a warming and drying trend. Northwest MT (Zones 104 and 105): Isolated showers will continue to move through the region today as temperatures warm to seasonal averages. Then Wednesday into Thursday a strong low pressure system will bring widespread precipitation and cooler temperatures. A second low pressure system is now expected for Saturday. A ridge of high pressure appears to build over the region the first part of next week causing a warming and drying trend. West Central MT (Zones 106, 107 and 108): Isolated showers will continue to move through the region today as temperatures warm to seasonal averages. Then Wednesday into Thursday a strong low pressure system will bring widespread precipitation and cooler temperatures. A second low pressure system is now expected for Saturday. A ridge of high pressure appears to build over the region the first part of next week causing a warming and drying trend. Southwest MT (Zones 109, 110 and 111): Isolated showers will continue to move through the region today as temperatures warm to seasonal averages. Then Wednesday into Thursday a strong low pressure system will bring widespread precipitation and cooler temperatures. A second low pressure system is now expected for Saturday. A ridge of high pressure appears to build over the region the first part of next week causing a warming and drying trend. IDZ102-103-221000- Palouse/Hells Canyon-Clearwater/Nez Perce- 252 AM PDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Snow level 6500 feet. * Max Temperature.....65-75 valleys and 50-60 ridges. * Min Humidity........26-36 percent valleys and 33-43 percent ridges. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 5-15 mph. * Haines Index........2 very low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Rain. Snow level 7000 feet. * Min Temperature.....40-50 valleys and 35-40 ridges. * Max Humidity........83-93 percent. * 20-Foot Winds....... * Lower Elevation......West 5-10 mph. * Ridge Top............West 5-10 mph. * LAL.................1. * CWR (> 0.10 Inch)...90 percent in the Palouse/Hells Canyon...and 70 percent in the Clearwater/Nez Perce. .WEDNESDAY... * Sky/Weather.........Snow in the morning. Rain showers. Slight chance of thunderstorms in the afternoon. Snow level 5500 feet. * Max Temperature.....50-60 valleys and 40-45 ridges. * Min Humidity........51-61 percent valleys and 61-71 percent ridges. * 20-Foot Winds....... * Lower Elevation......West 10-15 mph. * Ridge Top............West 10-15 mph. * Haines Index........3 very low. * LAL.................2. * CWR (> 0.10 Inch)...80 percent in the Palouse/Hells Canyon...and 100 percent in the Clearwater/Nez Perce. .THURSDAY...Cloudy with rain showers, snow and slight chance of thunderstorms. Lows 35-45. Highs 50-60. Min humidities 45-55 percent. West winds 5-10 mph. .FRIDAY...Partly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 35-45. Highs 60-70. Min humidities 35-45 percent. South winds 5-10 mph. .SATURDAY...Cooler. Mostly cloudy with rain showers likely and slight chance of thunderstorms. Lows 40-50. Highs 50-60. Southwest winds 10-15 mph. .SUNDAY...Partly cloudy. Chance of rain and snow. Lows 35-45. Highs 55-65. .MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 40-50. Highs 65-75. $$ MTZ104-105-221000- Kootenai-Flathead/Glacier Park- 352 AM MDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Areas of frost in the morning. Snow level 6500 feet. * Max Temperature.....60-70 valleys and 45-55 ridges. * Min Humidity........23-33 percent valleys and 41-51 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 10-20 mph. * Haines Index........2 very low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Rain likely. Chance of snow after midnight. Snow level 6500 feet. * Min Temperature.....35-45. * Max Humidity........97-100 percent valleys and 84-94 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 5-10 mph becoming variable less than 5 mph after midnight. * Ridge Top............Southwest 10-20 mph. * LAL.................1. * CWR (> 0.10 Inch)...50 percent in the Kootenai...and 30 percent in the Flathead/Glacier Park. .WEDNESDAY... * Sky/Weather.........Rain and snow in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Snow level 6500 feet. * Max Temperature.....55-60 valleys and 35-45 ridges. * Min Humidity........53-63 percent valleys and 73-83 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............Southwest 5-10 mph. * Haines Index........2 very low. * LAL.................2. * CWR (> 0.10 Inch)...90 percent. .THURSDAY...Mostly cloudy with rain showers with possible snow and thunderstorms. Lows 35-45. Highs 50-60. Min humidities 35-45 percent. Northwest winds 10-15 mph. .FRIDAY...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 40-50. Highs 55-65. Min humidities 40-50 percent. Southwest winds 10-15 mph. .SATURDAY...Mostly cloudy with rain showers likely and slight chance of thunderstorms. Lows 40-50. Highs 50-60. Southwest winds 10-15 mph. .SUNDAY...Mostly cloudy. Chance of rain and snow. Lows 35-45. Highs 50-60. .MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 35-45. Highs 60-70. $$ MTZ106-108-221000- West Lolo-East Lolo- 352 AM MDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Areas of frost in the morning. Snow level 6500 feet. * Max Temperature.....55-65 valleys and 48-58 ridges. * Min Humidity........23-33 percent valleys and 35-45 percent ridges. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 10-20 mph. * Haines Index........2 very low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Chance of rain. Snow level 7000 feet. * Min Temperature.....35-45. * Max Humidity........91-100 percent valleys and 78-88 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-15 mph. * Ridge Top............West 10-20 mph becoming southwest 5-10 mph after midnight. * LAL.................1. * CWR (> 0.10 Inch)...40 percent in the West Lolo...and 10 percent in the East Lolo. .WEDNESDAY... * Sky/Weather.........Rain and snow in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Snow level 6500 feet. * Max Temperature.....50-60 valleys and 43-53 ridges. * Min Humidity........53-63 percent valleys and 63-73 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............Southwest 5-10 mph. * Haines Index........2 very low. * LAL.................3. * CWR (> 0.10 Inch)...80 percent. .THURSDAY...Cloudy with rain showers, snow and slight chance of thunderstorms. Lows 35-45. Highs 50-60. Min humidities 40-50 percent. Northwest winds 10-15 mph. .FRIDAY...Partly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 35-45. Highs 55-65. Min humidities 35-45 percent. Southwest winds 10-15 mph. .SATURDAY...Mostly cloudy with rain showers and slight chance of thunderstorms. Lows 40-50. Highs 50-60. Southwest winds 10-15 mph. .SUNDAY...Mostly cloudy. Chance of rain and snow. Lows 35-45. Highs 50-60. .MEMORIAL DAY...Warmer. Partly cloudy. Slight chance of rain. Lows 35-45. Highs 65-75. $$ MTZ107-221000- Flathead Reservation- 352 AM MDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Snow level 6500 feet. * Max Temperature.....65-70 valleys and 45-50 ridges. * Min Humidity........27-37 percent valleys and 39-49 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 5-15 mph. * Ridge Top............Southwest 10-20 mph. * Haines Index........2 very low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Rain likely. Snow level 7000 feet. * Min Temperature.....45-50 valleys and 35-40 ridges. * Max Humidity........81-91 percent. * 20-Foot Winds....... * Lower Elevation......Southwest 5-15 mph becoming variable less than 5 mph after midnight. * Ridge Top............West 10-20 mph becoming southwest 5-10 mph after midnight. * LAL.................1. * CWR (> 0.10 Inch)...20 percent in areas west of Highway 93...and 50 percent in the Mission Mtns and areas east of Highway 93. .WEDNESDAY... * Sky/Weather.........Rain in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Snow level 6500 feet. * Max Temperature.....55-60 valleys and 35-40 ridges. * Min Humidity........57-67 percent valleys and 72-82 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............Southwest 5-10 mph. * Haines Index........2 very low. * LAL.................2. * CWR (> 0.10 Inch)...90 percent. .THURSDAY...Mostly cloudy with rain showers and slight chance of thunderstorms. Lows 40-50. Highs 55-65. Min humidities 40-50 percent. Northwest winds 5-15 mph. .FRIDAY...Partly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 40-50. Highs 60-70. Min humidities 35-45 percent. Southwest winds 5-10 mph. .SATURDAY...Cooler. Mostly cloudy with chance of rain. Lows 45-55. Highs 50-60. Southwest winds 10-15 mph. .SUNDAY...Mostly cloudy. Chance of rain. Lows 40-50. Highs 55-65. .MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 40-50. Highs 65-75. $$ MTZ109-221000- Bitterroot- 352 AM MDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Slight chance of snow in the afternoon. Snow level 6500 feet. * Max Temperature.....60-65 valleys and 45-50 ridges. * Min Humidity........22-32 percent valleys and 30-40 percent ridges. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 5-15 mph. * Haines Index........2 very low. * LAL.................1. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Mostly cloudy. Chance of snow after midnight. Snow level 7000 feet. * Min Temperature.....33-43. * Max Humidity........69-79 percent. * 20-Foot Winds....... * Lower Elevation......Southwest 5-10 mph becoming variable less than 5 mph after midnight. * Ridge Top............Southwest 5-15 mph. * LAL.................1. * CWR (> 0.10 Inch)...10 percent. .WEDNESDAY... * Sky/Weather.........Rain and snow in the morning, then rain showers, snow showers and slight chance of thunderstorms in the afternoon. Snow level 6500 feet. * Max Temperature.....55-60 valleys and 40-45 ridges. * Min Humidity........48-58 percent valleys and 57-67 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 7 mph. * Ridge Top............Southwest 5-15 mph. * Haines Index........2 very low. * LAL.................3 in the Darby, Sula, and West Fork Districts...and 2 in areas north of Hamilton. * CWR (> 0.10 Inch)...100 percent in the Darby, Sula, and West Fork Districts...and 80 percent in areas north of Hamilton. .THURSDAY...Cloudy with snow showers, rain and slight chance of thunderstorms. Lows 30-40. Highs 45-55. Min humidities 40-50 percent. West winds 5-15 mph. .FRIDAY...Partly cloudy with slight chance of rain showers and thunderstorms. Lows 30-40. Highs 50-60. Min humidities 35-45 percent. Southwest winds 5-10 mph. .SATURDAY...Mostly cloudy with rain showers with possible snow and thunderstorms. Lows 35-45. Highs 45-55. Southwest winds 10-15 mph. .SUNDAY...Mostly cloudy. Chance of rain and snow. Lows 30-40. Highs 50-60. .MEMORIAL DAY...Partly cloudy. Lows 35-45. Highs 60-70. $$ MTZ110-111-221000- Deerlodge/West Beaverhead-East Beaverhead- 352 AM MDT Tue May 21 2024 .TODAY... * Sky/Weather.........Partly cloudy. Slight chance of thunderstorms and snow showers in the afternoon. Snow level 6500 feet. * Max Temperature.....55-60 valleys and 45-50 ridges. * Min Humidity........23-33 percent. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 5-15 mph. * Haines Index........3 very low. * LAL.................2. * CWR (> 0.10 Inch)...10 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Slight chance of rain showers. Snow level 7000 feet. * Min Temperature.....30-40. * Max Humidity........65-75 percent valleys and 59-69 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-15 mph. * Ridge Top............Southwest 10-15 mph. * LAL.................1. * CWR (> 0.10 Inch)...10 percent. .WEDNESDAY... * Sky/Weather.........Mostly cloudy. Chance of rain and snow in the morning, then rain showers, chance of thunderstorms and snow showers in the afternoon. Snow level 7000 feet. * Max Temperature.....50-60 valleys and 45-50 ridges. * Min Humidity........41-51 percent valleys and 49-59 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 15-25 mph. * Ridge Top............Southwest 15-25 mph. * Haines Index........3 very low. * LAL.................3. * CWR (> 0.10 Inch)...90 percent in the Deerlodge/West Beaverhead...and 70 percent in the East Beaverhead. .THURSDAY...Colder. Cloudy with snow showers, rain showers and chance of thunderstorms. Lows 30-40. Highs 40-50. Min humidities 40-50 percent. West winds 5-15 mph. .FRIDAY...Partly cloudy with slight chance of rain showers, thunderstorms and snow. Lows 25-35. Highs 50-60. Min humidities 30-40 percent. Southwest winds 10-15 mph. .SATURDAY...Mostly cloudy with rain showers likely with possible snow and thunderstorms. Lows 35-45. Highs 50-60. Southwest winds 10-20 mph. .SUNDAY...Mostly cloudy. Chance of rain and snow. Lows 30-40. Highs 50-60. .MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 30-40. Highs 60-70. $$