233  
FNUS76 KPQR 050042  
FWSPQR  
 
SPOT FORECAST FOR CLACKAMAS FIRE- AIR MOBILITY EXERCISE...CLACKAMAS FIRE  
NATIONAL WEATHER SERVICE PORTLAND OR  
542 PM PDT THU JUN 4 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 PDT ON JUNE 05.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
GUSTY SOUTHWEST FLOW EXPECTED FRIDAY AND SATURDAY.  
RAIN CHANCES INCREASE LATE FRIDAY NIGHT AND THROUGH THE AFTERNOON.  
THERE IS A 20-30% CHANCE FOR THUNDERSTORMS LATE SATURDAY MORNING  
AND THROUGH THE AFTERNOON.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING MOSTLY CLOUDY.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....AROUND 64.  
MIN HUMIDITY........56 PERCENT.  
SURFACE WINDS.......LIGHT WINDS BECOMING SOUTHWEST 8 TO 9 MPH WITH  
GUSTS TO AROUND 20 MPH IN THE LATE MORNING AND  
AFTERNOON.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 7 MPH WITH GUSTS TO AROUND  
16 MPH.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 15 MPH SHIFTING TO THE WEST 15  
TO 16 MPH LATE IN THE AFTERNOON.  
CEILING (KFT).......2.6 INCREASING TO 4.1 LATE IN THE MORNING.  
VISIBILITY (SM)......10.  
 
TIME (PDT) 7 AM 11 AM 3 PM  
SKY (%).........68 61 59  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 10  
TEMP............50 56 61  
RH..............77 67 60  
20 FT WIND......SW 3G6 SW 6G12 W 7G14  
SURFACE WIND....SW 4G7 SW 8G15 W 9G18  
TRANSPORT WIND..SW 6 SW 12 W 16  
CEILING (KFT)...3.0 4.3 4.5  
VISIBILITY (SM).10 10 10  
   
FRIDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE  
EVENING, THEN RAIN LIKELY AFTER 3 AM.  
CHANCE OF PCPN......70 PERCENT.  
MIN TEMPERATURE.....AROUND 47.  
MAX HUMIDITY........92 PERCENT.  
SURFACE WINDS.......SOUTHWEST WINDS 6 TO 9 MPH. GUSTS UP TO 20 MPH  
EARLY IN THE EVENING.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 7 MPH. GUSTS UP TO 20 MPH  
EARLY IN THE EVENING.  
TRANSPORT WINDS.....SOUTHWEST 8 TO 13 MPH DECREASING TO 8 TO 9 MPH  
AFTER 3 AM.  
CEILING (KFT).......4.3 DECREASING TO 2.2.  
VISIBILITY (SM)......10.  
 
TIME (PDT) 6 PM 10 PM 2 AM  
SKY (%).........80 90 80  
WEATHER COV..... S CHC CHANCE  
WEATHER TYPE....NONE RAIN RAIN  
TSTM COV........  
CHC OF PCPN (%).10 20 50  
TEMP............62 56 51  
RH..............56 65 81  
20 FT WIND......W 7G16 W 6G14 SW 5G10  
SURFACE WIND....W 9G20 W 8G18 SW 6G13  
TRANSPORT WIND..W 13 W 10 SW 9  
CEILING (KFT)...4.3 4.8 3.2  
VISIBILITY (SM).10 10 10  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
IN THE MORNING. RAIN SHOWERS THROUGH THE DAY.  
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......90 PERCENT.  
MAX TEMPERATURE.....AROUND 58.  
MIN HUMIDITY........72 PERCENT.  
SURFACE WINDS.......SOUTHWEST WINDS 8 TO 10 MPH. GUSTS UP TO 20 MPH  
LATE IN THE AFTERNOON.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 6 TO 8 MPH. GUSTS UP TO 20 MPH  
LATE IN THE AFTERNOON. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS LATE IN THE  
MORNING.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 14 MPH.  
CEILING (KFT).......2.0 INCREASING TO 9.0.  
VISIBILITY (SM)......8 DECREASING TO 6 LATE IN THE AFTERNOON.  
 
TIME (PDT) 6 AM 10 AM 2 PM  
SKY (%).........91 81 94  
WEATHER COV.....LIKELY LIKELY DEFNTE  
WEATHER TYPE....RAIN RAIN RNSHWR  
TSTM COV........ CHANCE  
CHC OF PCPN (%).70 70 90  
TEMP............48 50 55  
RH..............89 89 83  
20 FT WIND......SW 6G12 SW 7G14 SW 8G16  
SURFACE WIND....SW 8G15 SW 9G18 SW 10G20  
TRANSPORT WIND..SW 10 SW 12 SW 14  
CEILING (KFT)...2.0 4.5 7.0  
VISIBILITY (SM).10 10 8  
 

 
FORECASTER...BATZ  
REQUESTED BY...PATRICK DELAIR  
TYPE OF REQUEST...OTHER  
.TAG 2614604.0/PQR  
.DELDT 06/04/26  
.FORMATTERVERSION 2.0.0  
.EMAIL MORGAN.WEST@CLACKAMASFIRE.COM,PATRICK.DELAIR@CLACKAMASFIRE.COM  
 
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