CAZ268-092100- Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest (West of Evans Peak-Grizzly Peak- Beckworth Peak)- 155 PM PDT Sun Jun 8 2025 .TONIGHT... * Sky/Weather............Mostly clear. A slight chance of showers and thunderstorms in the evening. * Min Temperature........56-65. * 24 HR Trend..........Little change. * Max Humidity...........51-64 percent...except 67-82 percent in the high mountain valleys. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...North winds 4 to 9 mph. * Ridges/Upr Slopes....North winds 4 to 9 mph. * CWR....................0 percent. * Mixing Height..........300 ft AGL. * Chance of thunder......17 percent. .MONDAY... * Sky/Weather............Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. * Max Temperature........85-93 lower elevations...except 78-86 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........21-31 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Northeast winds up to 8 mph shifting to the southwest in the afternoon. * Ridges/Upr Slopes....Northeast winds 4 to 10 mph shifting to the west up to 7 mph in the afternoon. * CWR....................0 percent. * Mixing Height..........7300 ft AGL. * Chance of thunder......15 percent. .MONDAY NIGHT... * Sky/Weather............Mostly clear. At higher elevations, a slight chance of showers and thunderstorms early in the evening, then a slight chance of showers late in the evening. * Min Temperature........55-65. * Max Humidity...........64-79 percent...except 72-87 percent in the high mountain valleys. * 20-Foot Winds.......... * Valleys/Lwr Slopes...West winds up to 8 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....West winds up to 8 mph shifting to the north up to 7 mph after midnight. * Mixing Height..........300 ft AGL. * CWR....................0 percent. * Chance of thunder......7 percent. .TUESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........81-89 lower elevations...except 74-82 higher elevations. * Min Humidity...........30-45 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Northeast winds up to 7 mph shifting to the southwest 5 to 11 mph in the afternoon. * Ridges/Upr Slopes....North winds up to 7 mph shifting to the southwest 7 to 13 mph in the afternoon. * Mixing Height..........7400 ft AGL. * CWR....................0 percent. * Chance of thunder......2 percent.