FNUS55 KBOI 132109 FWFBOI Fire Weather Planning Forecast for SW Idaho and SE Oregon National Weather Service Boise ID 309 PM MDT Fri Oct 13 2023 .DISCUSSION...A weak ridge will continue to build over the region today, bringing warmer temperatures through Monday. A pair of weak shortwaves will move through the area late tonight and again on Saturday night bringing increased clouds and a chance of showers. Monday will be a full 20 degrees warmer than normal. Another Pacific trough will move inland and through the district Monday night and Tuesday, with gusty west winds, rain showers in northern and central areas, and temps cooling briefly to normal. The trough will exit east Tuesday night and the main upper ridge will rebuild strongly over the interior western US Wednesday through Sunday, bringing clear skies and above normal temperatures. Limited mixing and ventilation as sun angles continue to lower. This is the last fire weather planning forecast for the 2023 season. IDZ401-402-141015- Western Payette National Forest-Eastern Payette National Forest- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....34 to 46. 24 hr trend......On average, 4 degrees warmer. Max humidity........62 to 81 percent. 24 hr trend......On average, 11 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 11 mph. Ridges/upr slopes....South 8 to 12 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300-400 ft AGL. Transport Winds....South 5 to 15 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....48 to 63. 24 hr trend......On average, 5 degrees warmer. Min humidity........36 to 51 percent. 24 hr trend......On average, 6 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 12 mph. Gusts to 18 mph in the afternoon. Ridges/upr slopes....South 8 to 13 mph with gusts to 20 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4000-6000 ft AGL. Transport Winds....Southwest 10 to 15 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....38 to 49. 24 hr trend......On average, 4 degrees warmer. Max humidity........59 to 79 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 9 mph in the evening, becoming light downslope less than 8 mph after midnight. Ridges/upr slopes....South 8 to 11 mph. Gusts to 18 mph in the evening. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....South 5 to 15 mph. .SUNDAY... Sky/weather.........Mostly cloudy in the morning, then becoming mostly sunny in the afternoon. Max temperature.....53 to 68. 24 hr trend......On average, 5 degrees warmer. Min humidity........32 to 43 percent. 24 hr trend......On average, 6 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph. Ridges/upr slopes....South 8 to 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4000-6000 ft AGL. Transport Winds....Southwest 5 to 15 mph. $$ = IDZ403-141015- Northern Boise National Forest- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....34 to 44. 24 hr trend......On average, 6 degrees warmer. Max humidity........62 to 81 percent. 24 hr trend......On average, 10 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 9 mph. Ridges/upr slopes....South 8 to 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300-400 ft AGL. Transport Winds....South 5 to 10 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....49 to 64. 24 hr trend......On average, 5 degrees warmer. Min humidity........34 to 47 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming south around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming south 8 to 10 mph in the afternoon. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......5000-6000 ft AGL. Transport Winds....Southwest 10 to 15 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....38 to 47. 24 hr trend......On average, 3 degrees warmer. Max humidity........58 to 80 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Ridges/upr slopes....South around 8 mph in the evening, becoming light after midnight. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....South 5 to 10 mph. .SUNDAY... Sky/weather.........Partly sunny. Max temperature.....55 to 69. 24 hr trend......On average, 5 degrees warmer. Min humidity........29 to 38 percent. 24 hr trend......On average, 7 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming southwest around 8 mph in the afternoon. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4500-6000 ft AGL. Transport Winds....Southwest 5 to 15 mph. $$ = IDZ421-141015- Southern Boise National Forest/Western Sawtooth National Forest- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....33 to 45. 24 hr trend......On average, 5 degrees warmer. Max humidity........59 to 84 percent. 24 hr trend......On average, 8 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 13 mph with gusts to 20 mph. Ridges/upr slopes....Southeast 8 to 14 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....Southeast 5 to 15 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....57 to 68, except 49 to 56 above 6500 feet. 24 hr trend......On average, 6 degrees warmer. Min humidity........27 to 37 percent, except 35 to 44 percent above 6500 feet. 24 hr trend......On average, 5 percent drier. 20-foot winds....... Valleys/lwr slopes...South around 8 mph. Ridges/upr slopes....South around 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......5000-6000 ft AGL. Transport Winds....Southwest 10 to 15 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....36 to 48. 24 hr trend......On average, 4 degrees warmer. Max humidity........56 to 81 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast around 9 mph. Ridges/upr slopes....Light winds less than 8 mph in the evening, becoming southeast 8 to 9 mph after midnight. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....Southeast 5 to 10 mph. .SUNDAY... Sky/weather.........Mostly sunny. Max temperature.....63 to 73, except 54 to 61 above 6500 feet. 24 hr trend......On average, 5 degrees warmer. Min humidity........23 to 31 percent, except 29 to 36 percent above 6500 feet. 24 hr trend......On average, 6 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southeast 8 to 9 mph in the afternoon. Ridges/upr slopes....Southeast around 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4500-5500 ft AGL. Transport Winds....Southwest 5 to 10 mph. $$ = IDZ400-141015- Northern Boise BLM- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Partly cloudy in the evening, then becoming mostly cloudy after midnight. Min temperature.....44 to 49. 24 hr trend......On average, 7 degrees warmer. Max humidity........61 to 76 percent. 24 hr trend......On average, 12 percent drier. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Gusts to 14 mph in the evening. Ridges/upr slopes....Southeast 8 to 9 mph with gusts to 18 mph. Haines Index........3 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....Southeast 5 to 10 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....61 to 72. 24 hr trend......On average, 5 degrees warmer. Min humidity........31 to 42 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming south around 8 mph in the afternoon. Ridges/upr slopes....Southeast around 10 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4000-5000 ft AGL. Transport Winds....South around 10 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....45 to 51. 24 hr trend......On average, 3 degrees warmer. Max humidity........56 to 77 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light downslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....Southeast 5 to 10 mph. .SUNDAY... Sky/weather.........Mostly cloudy in the morning, then becoming mostly sunny in the afternoon. Max temperature.....65 to 74. 24 hr trend......On average, 3 degrees warmer. Min humidity........28 to 38 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph. Ridges/upr slopes....Light winds less than 8 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4000-4500 ft AGL. Transport Winds....South 5 to 10 mph. $$ = IDZ420-424-141015- Treasure Valley BLM-Western Twin Falls BLM- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Partly cloudy in the evening, then becoming mostly cloudy after midnight. Min temperature.....42 to 49. 24 hr trend......On average, 7 degrees warmer. Max humidity........62 to 85 percent. 24 hr trend......On average, 11 percent drier. 20-foot winds....... Valleys/lwr slopes...East 8 to 12 mph with gusts to 20 mph. Ridges/upr slopes....East 9 to 15 mph. Haines Index........3 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300-400 ft AGL. Transport Winds....Southeast 10 to 15 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....67 to 73. 24 hr trend......On average, 7 degrees warmer. Min humidity........24 to 32 percent. 24 hr trend......On average, 8 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 12 mph. Ridges/upr slopes....Southeast 8 to 12 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......4500-6000 ft AGL. Transport Winds....South 10 to 15 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....44 to 51. 24 hr trend......On average, unchanged. Max humidity........58 to 81 percent. 24 hr trend......On average, 2 percent drier. 20-foot winds....... Valleys/lwr slopes...East around 10 mph. Ridges/upr slopes....East 8 to 12 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......300 ft AGL. Transport Winds....Southeast 5 to 15 mph. .SUNDAY... Sky/weather.........Mostly sunny. Max temperature.....72 to 77. 24 hr trend......On average, 4 degrees warmer. Min humidity........20 to 30 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...East 8 to 13 mph. Ridges/upr slopes....Southeast 8 to 13 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......3000-4000 ft AGL. Transport Winds....South 5 to 15 mph. $$ = IDZ423-426-141015- Owyhee Mountains-Southern Highlands- 309 PM MDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....38 to 46. 24 hr trend......On average, 7 degrees warmer. Max humidity........53 to 78 percent. 24 hr trend......On average, 19 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 11 mph with gusts to 18 mph. Ridges/upr slopes....South 8 to 11 mph. Haines Index........3 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....South 5 to 15 mph. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....62 to 72. 24 hr trend......On average, 9 degrees warmer. Min humidity........21 to 28 percent. 24 hr trend......On average, 10 percent drier. 20-foot winds....... Valleys/lwr slopes...South around 10 mph. Gusts to 16 mph in the afternoon. Ridges/upr slopes....South 8 to 11 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......5000-7000 ft AGL. Transport Winds....Southwest 5 to 15 mph. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....40 to 48. 24 hr trend......On average, 2 degrees warmer. Max humidity........52 to 77 percent. 24 hr trend......On average, unchanged. 20-foot winds....... Valleys/lwr slopes...South around 9 mph. Ridges/upr slopes....South 8 to 9 mph with gusts to 16 mph in the evening, becoming light after midnight. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......200-300 ft AGL. Transport Winds....South 5 to 15 mph. .SUNDAY... Sky/weather.........Mostly sunny. Max temperature.....68 to 75. 24 hr trend......On average, 5 degrees warmer. Min humidity........18 to 27 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...South 8 to 9 mph in the morning, becoming light upslope less than 8 mph in the afternoon. Ridges/upr slopes....South 8 to 9 mph in the morning, becoming light in the afternoon. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. Smoke Dispersal: Mixing Height......3000-4000 ft AGL. Transport Winds....Southwest 5 to 15 mph. $$ = ORZ646-141015- Baker Valley- 209 PM PDT Fri Oct 13 2023 .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....39 to 48. 24 hr trend......On average, 7 degrees warmer. Max humidity........63 to 78 percent. 24 hr trend......On average, 14 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 9 mph with gusts to 18 mph in the evening, becoming light downslope less than 8 mph after midnight. Ridges/upr slopes....South 8 to 11 mph with gusts to 18 mph. Haines Index........3 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....58 to 68. 24 hr trend......On average, 5 degrees warmer. Min humidity........32 to 41 percent. 24 hr trend......On average, 6 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming south 8 to 13 mph in the afternoon. Ridges/upr slopes....South 8 to 13 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....41 to 49. 24 hr trend......On average, 2 degrees warmer. Max humidity........61 to 87 percent. 24 hr trend......On average, 3 percent wetter. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 10 mph in the evening, becoming light downslope less than 8 mph after midnight. Ridges/upr slopes....South around 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SUNDAY... Sky/weather.........Mostly sunny. Max temperature.....62 to 72. 24 hr trend......On average, 4 degrees warmer. Min humidity........30 to 38 percent. 24 hr trend......On average, 3 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southeast around 8 mph in the afternoon. Ridges/upr slopes....Light winds less than 8 mph in the morning, becoming south 8 to 9 mph in the afternoon. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. $$ = ORZ636-637-141015- Burns BLM-Vale BLM- 309 PM MDT Fri Oct 13 2023 /209 PM PDT Fri Oct 13 2023/ .TONIGHT... Sky/weather.........Mostly cloudy. Min temperature.....37 to 46. 24 hr trend......On average, 8 degrees warmer. Max humidity........55 to 77 percent. 24 hr trend......On average, 16 percent drier. 20-foot winds....... Valleys/lwr slopes...Southeast 8 to 10 mph in the evening, becoming light downslope less than 8 mph after midnight. Ridges/upr slopes....South 8 to 12 mph. Haines Index........3 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SATURDAY... Sky/weather.........Partly sunny. Max temperature.....61 to 70. 24 hr trend......On average, 7 degrees warmer. Min humidity........23 to 33 percent. 24 hr trend......On average, 5 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming south 8 to 14 mph in the afternoon. Ridges/upr slopes....South 9 to 15 mph. Gusts to 22 mph in the afternoon. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SATURDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....40 to 48. 24 hr trend......On average, 2 degrees warmer. Max humidity........56 to 81 percent. 24 hr trend......On average, 4 percent wetter. 20-foot winds....... Valleys/lwr slopes...South 8 to 11 mph with gusts to 18 mph in the evening, becoming light downslope less than 8 mph after midnight. Ridges/upr slopes....South 8 to 12 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. .SUNDAY... Sky/weather.........Partly sunny. Max temperature.....66 to 74. 24 hr trend......On average, 5 degrees warmer. Min humidity........20 to 30 percent. 24 hr trend......On average, 4 percent drier. 20-foot winds....... Valleys/lwr slopes...Light upslope winds less than 8 mph in the morning, becoming southeast 8 to 9 mph in the afternoon. Ridges/upr slopes....South around 9 mph. Haines Index........2 very low. LAL.................1. CWR /0.10 inch/.....0 percent. $$ = .FORECAST DAYS 3 THROUGH 7... .MONDAY...Mostly cloudy. Lows 40 to 51. Highs 65 to 80. Southeast winds 10 to 15 mph with gusts to 25 mph. .TUESDAY...Cooler. Mostly cloudy. A 30 percent chance of showers. Lows 41 to 51. Highs 52 to 67. West winds 10 to 15 mph with gusts to 25 mph. .WEDNESDAY...Partly cloudy. Lows 33 to 43. Highs 55 to 68. Northwest winds 10 to 15 mph. .THURSDAY...Mostly clear. Lows 36 to 45. Highs 59 to 72. .FRIDAY...Mostly clear. Lows 38 to 46. Highs 60 to 74. .OUTLOOK FOR SATURDAY OCTOBER 21 THROUGH FRIDAY OCTOBER 27 Above normal temperatures and below normal precipitation. $$ =