National Weather Service Fire Weather Planning Forecast
Northern Sierra | Tahoe National Forest
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA...CORRECTED NATIONAL WEATHER SERVICE SACRAMENTO CA 259 PM PDT WED MAY 23 2012
DISCUSSION... BREEZY WEST TO NORTHWEST WINDS ARE EXPECTED TOMORROW AS A COLD UPPER LOW APPROACHES THE REGION. THIS LOW WILL MOVE THROUGH LATE THURSDAY INTO FRIDAY...BRINGING MUCH COOLER TEMPERATURES ALONG WITH LIKELY WETTING RAIN OR SNOW OVER THE HIGHER SIERRA WITH A CHANCE OF RAIN ELSEWHERE. ISOLATED THUNDERSTORMS ARE ALSO POSSIBLE FRIDAY AFTERNOON FOR MUCH OF THE AREA. FAIR WEATHER IS EXPECTED FOR THE WEEKEND INTO NEXT WEEK WITH A WARMING TREND...ALTHOUGH ONSHORE FLOW WILL LEAD TO CONTINUED GOOD RELATIVE HUMIDITY RECOVERIES.
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE SIERRA CREST- 259 PM PDT WED MAY 23 2012
.TONIGHT... SKY/WEATHER..............MOSTLY CLEAR. MIN TEMPERATURE..........43-48 LOWER ELEVATIONS...EXCEPT 34-42 HIGHER ELEVATIONS. 24 HR TREND...........LITTLE CHANGE. MAX HUMIDITY.............68-83 PERCENT. 24 HR TREND...........9 PERCENT DOWN. 20-FOOT WINDS............ VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH SHIFTING TO THE EAST 1 TO 5 MPH AFTER MIDNIGHT...THEN BECOMING VARIABLE LESS THAN 5 MPH LATE IN THE NIGHT. RIDGES/UPR SLOPES....BREEZY. WEST WINDS 14 TO 26 MPH SHIFTING TO THE NORTHEAST AFTER MIDNIGHT...THEN BECOMING SOUTHEAST 10 TO 16 MPH LATE IN THE NIGHT. LAL......................1. CWR......................0 PERCENT.
.THURSDAY... SKY/WEATHER..............MOSTLY SUNNY. MAX TEMPERATURE..........64-70 LOWER ELEVATIONS...EXCEPT 52-62 HIGHER ELEVATIONS. 24 HR TREND...........4 DEGREES COOLER. MIN HUMIDITY.............19-28 PERCENT. 24 HR TREND...........LITTLE CHANGE. 20-FOOT WINDS............ VALLEYS/LWR SLOPES...VARIABLE LESS THAN 5 MPH BECOMING WEST 6 TO 12 MPH WITH LOCAL GUSTS UP TO 25 MPH IN THE LATE MORNING AND AFTERNOON. RIDGES/UPR SLOPES....BREEZY. NORTHEAST WINDS 10 TO 16 MPH INCREASING TO WEST 16 TO 28 MPH IN THE LATE MORNING AND AFTERNOON. LAL......................1. CWR......................0 PERCENT.
.THURSDAY NIGHT... SKY/WEATHER..............MOSTLY CLEAR THEN BECOMING MOSTLY CLOUDY. A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT. MIN TEMPERATURE..........38-43 LOWER ELEVATIONS...EXCEPT 28-36 HIGHER ELEVATIONS. MAX HUMIDITY.............71-86 PERCENT. 20-FOOT WINDS............ VALLEYS/LWR SLOPES...WEST WINDS 5 TO 11 MPH IN THE EVENING BECOMING VARIABLE LESS THAN 5 MPH. RIDGES/UPR SLOPES....BREEZY. WEST WINDS 14 TO 26 MPH BECOMING SOUTH 8 TO 14 MPH AFTER MIDNIGHT. LAL......................1. CWR......................0 PERCENT.
.FRIDAY... SKY/WEATHER..............MOSTLY CLOUDY. A CHANCE OF RAIN AND SNOW SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW LEVEL 5500 FEET IN THE AFTERNOON. MAX TEMPERATURE..........51-56 LOWER ELEVATIONS...EXCEPT 36-46 HIGHER ELEVATIONS. MIN HUMIDITY.............45-60 PERCENT. 20-FOOT WINDS............ VALLEYS/LWR SLOPES...SOUTHWEST WINDS 2 TO 7 MPH. RIDGES/UPR SLOPES....SOUTHWEST WINDS 14 TO 20 MPH BECOMING NORTHWEST 5 TO 11 MPH IN THE AFTERNOON. LAL......................1 INCREASING TO 2 LATE IN THE MORNING. CWR......................50 PERCENT.
