CAZ220-267-190100-
Southern Motherlode From 1000 to 3000 Ft. Includes portions of
Toulumne-Calaveras Unit-
Northern Motherlode From 1000 to 3000 Ft. Includes portions of
Nevada-Yuba-Placer-Amador and Eldorado Units-
123 AM PST Thu Dec 18 2025

.TODAY...
* Sky/Weather............Mostly cloudy in the morning then becoming
  partly cloudy. Widespread dense fog in the morning.
* Max Temperature........56-61.
*   24 HR Trend..........Little change.
* Min Humidity...........72-87 percent lower elevations...except
  49-64 percent high elevations.
*   24 HR Trend..........23 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Upslope winds up to 5 mph.
*   Ridges/Upr Slopes....Variable winds up to 7 mph.
* CWR....................0 percent.
* Mixing Height..........1300 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............Mostly cloudy. Patchy fog through the
  night. A chance of showers after midnight.
* Min Temperature........43-48.
*   24 HR Trend..........Little change.
* Max Humidity...........94-100 percent lower elevations...except
  82-97 percent high elevations.
*   24 HR Trend..........Little change.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Drainage winds up to 5 mph becoming
    southeast up to 8 mph after midnight.
*   Ridges/Upr Slopes....Southeast winds up to 8 mph.
* CWR....................0 percent.
* Mixing Height..........500 ft AGL.
* Chance of thunder......0 percent.

.FRIDAY...
* Sky/Weather............A chance of showers early in the morning,
  then showers in the late morning and afternoon.
* Max Temperature........52-57.
* Min Humidity...........67-82 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southeast winds 4 to 10 mph.
*   Ridges/Upr Slopes....Southeast winds 4 to 10 mph.
* Mixing Height..........1300 ft AGL.
* CWR....................40 percent.
* Chance of thunder......9 percent.

CAZ268-190100-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-
123 AM PST Thu Dec 18 2025

.TODAY...
* Sky/Weather............Partly cloudy with a chance of showers.
  Patchy dense fog.
* Max Temperature........49-54 lower elevations...except 43-49
  higher elevations.
*   24 HR Trend..........Little change.
* Min Humidity...........63-78 percent.
*   24 HR Trend..........13 percent down.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...Southwest winds 10 to 16 mph with local
    gusts up to 25 mph.
*   Ridges/Upr Slopes....Southwest winds 10 to 16 mph with local
    gusts up to 30 mph.
* CWR....................10 percent.
* Mixing Height..........1700 ft AGL.
* Chance of thunder......0 percent.

.TONIGHT...
* Sky/Weather............At higher elevations, areas of dense fog
  in the evening, Showers and heavy snow showers after midnight,
  Heavy snow showers after midnight. At lower elevations, patchy
  dense fog through the night, Showers after midnight.
* Min Temperature........33-42.
*   24 HR Trend..........Little change.
* Max Humidity...........95-100 percent.
*   24 HR Trend..........10 percent up.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...South winds 15 to 27 mph with local gusts up
    to 30 mph.
*   Ridges/Upr Slopes....Windy. Southwest winds 16 to 28 mph with
    local gusts up to 40 mph.
* CWR....................10 percent.
* Mixing Height..........800 ft AGL.
* Chance of thunder......0 percent.

.FRIDAY...
* Sky/Weather............Rain showers.
* Max Temperature........44-49 lower elevations...except 39-45
  higher elevations.
* Min Humidity...........76-91 percent.
* 20-Foot Winds..........
*   Valleys/Lwr Slopes...South winds 15 to 21 mph with local gusts up
    to 30 mph.
*   Ridges/Upr Slopes....Breezy. Southwest winds 17 to 29 mph
    decreasing to 14 to 20 mph in the afternoon. Local gusts up to
    40 mph.
* Mixing Height..........1500 ft AGL.
* CWR....................90 percent.
* Chance of thunder......11 percent.