902  
FNUS76 KMFR 190453  
FWSMFR  
 
SPOT FORECAST FOR CASTLE...USFS  
NATIONAL WEATHER SERVICE MEDFORD OR  
953 PM PDT TUE AUG 18 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 PDT ON AUGUST 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
THE CASTLE FIRE WILL SEE SOME LIGHT EASTERLY DRAINAGE  
WINDS IN THE MORNING BEFORE WINDS TURN WESTERLY IN THE AFTERNOON.  
TEMPERATURES WILL REMAIN WARM AND TREND WARMER INTO THURSDAY. RHS  
WILL ALSO TREND HIGHER FURTHER INTO THE WEEK AS MORE MOISTURE MOVES  
IN FROM THE SOUTH. THE CHANCE OF SHOWERS OR THUNDERSTORMS REMAINS  
AROUND 5% ON FRIDAY.  
 
THANKS FOR THE WEATHER OBSERVATIONS! WE ADJUSTED THE TEMPERATURES  
AND RHS BASED ON THE SUBMITTED WEATHER OBSERVATIONS.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....86-90.  
MIN HUMIDITY........24-29 PERCENT.  
EYE LEVEL WINDS.....LIGHT EAST WINDS IN THE MORNING TURNING  
WEST WINDS AROUND 2 MPH IN THE AFTERNOON.  
WIND (20 FT)........LIGHT EAST WINDS IN THE MORNING TURNING  
WEST WINDS 3 TO 5 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......4800 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 9 MPH.  
CWR.................0 PERCENT.  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....55-60.  
MAX HUMIDITY........70-79 PERCENT.  
EYE LEVEL WINDS.....EAST WINDS AROUND 2 MPH IN THE EVENING BECOMING  
LIGHT.  
WIND (20 FT)........EAST WINDS AROUND 5 MPH IN THE EVENING BECOMING  
LIGHT.  
MIXING HEIGHT.......200 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 6 MPH.  
CWR.................0 PERCENT.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....91-94.  
MIN HUMIDITY........27-33 PERCENT.  
EYE LEVEL WINDS.....LIGHT EAST WINDS TURNING WEST AROUND 1 MPH.  
WIND (20 FT)........LIGHT EAST WINDS TURNING WEST 2 TO 3 MPH.  
MIXING HEIGHT.......6700 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 7 MPH.  
CWR.................0 PERCENT.  
 

 
FORECASTER...SMITH  
REQUESTED BY...MARISSA DUARTE  
TYPE OF REQUEST...WILDFIRE  
.TAG 2619591.4/MFR  
.DELDT 08/19/26  
.FORMATTERVERSION 2.0.0  
.EMAIL MARISSA.DUARTE@USDA.GOV  
 
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