482  
FNUS76 KPDT 190932  
FWSPDT  
 
SPOT FORECAST FOR EKONE RX...WASHINGTON DNR  
NATIONAL WEATHER SERVICE PENDLETON OR  
232 AM PDT TUE MAY 19 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON MAY 19.  
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS ***  
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES ***  
***CWR: CHANCE OF WETTING RAIN 0.10 OR GREATER ***  
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND  
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.  
CATEGORIES ARE A GENERALIZED INDICATOR ONLY:  
LOW (< 200), MODERATE (200-500), HIGH (500-700),  
AND VERY HIGH (> 700). ***  
 
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE  
CONTACT OUR OFFICE AT (541) 276-8134.  
   
DISCUSSION
 
 
LIGHT WINDS UNDER 10 MPH THIS MONRING WILL INCREASE IN THE AFTERNOON  
AS RELATIVE HUMIDITY FALLS TO AROUND 40 PERCENT. RELATIVE HUMIDITY  
WILL RECOVER OVERNIGHT TO AROUND 75 PERCENT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....65-68.  
MIN HUMIDITY........39-44 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 10 MPH INCREASING TO 12 TO 17 MPH IN THE AFTERNOON.  
RIDGETOP WIND.......WEST WINDS 6 TO 11 MPH INCREASING TO 15 TO 18 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......5400 FT AGL.  
TRANSPORT WINDS.....WEST 6 TO 12 MPH INCREASING TO AROUND 17 MPH  
LATE IN THE AFTERNOON.  
VENTILATION INDEX...LOW (70) INCREASING TO HIGH (620) IN THE  
AFTERNOON.  
 
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM  
CHC OF LTNG (%).0 0 0 0 0 0  
TEMP............45 50 57 61 64 65  
RH..............72 65 54 48 43 43  
20 FT WIND......W 7 W 8 SW 10 W 12 W 15 W 18  
20 FT WIND GUST. 10 16  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING  
PARTLY CLOUDY (35-45 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....44-47.  
MAX HUMIDITY........73-78 PERCENT.  
WIND (20 FT)........WEST WINDS 7 TO 18 MPH SHIFTING TO THE  
NORTHWEST 5 TO 8 MPH LATE IN THE EVENING.  
RIDGETOP WIND.......WEST WINDS 7 TO 18 MPH SHIFTING TO THE  
NORTHWEST 5 TO 8 MPH LATE IN THE EVENING.  
MIXING HEIGHT.......500 FT AGL IN THE EVENING THEN 700 FT AGL EARLY  
IN THE MORNING.  
TRANSPORT WINDS.....WEST 16 TO 17 MPH SHIFTING TO THE NORTH 6 TO 8  
MPH LATE IN THE EVENING.  
VENTILATION INDEX...MODERATE (290) DECREASING TO LOW (30)  
OVERNIGHT.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....AROUND 70.  
MIN HUMIDITY........33-38 PERCENT.  
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH SHIFTING TO THE  
SOUTHWEST 7 TO 9 MPH IN THE MORNING.  
RIDGETOP WIND.......NORTH WINDS 5 TO 7 MPH SHIFTING TO THE  
SOUTHWEST 7 TO 9 MPH IN THE MORNING.  
MIXING HEIGHT.......5900 FT AGL.  
TRANSPORT WINDS.....NORTH 6 TO 8 MPH SHIFTING TO THE NORTHWEST  
AROUND 8 MPH LATE IN THE AFTERNOON.  
VENTILATION INDEX...LOW (80) INCREASING TO MODERATE (350) IN THE  
AFTERNOON.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
 
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.  
NORTH WINDS AROUND 5 MPH.    
FRIDAY
 
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S. WEST  
WINDS AROUND 5 MPH.    
SATURDAY
 
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 70S. WEST WINDS  
AROUND 8 MPH.    
SUNDAY
 
 
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS AROUND 70.    
MEMORIAL DAY
 
 
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 60S.  
 

 
FORECASTER...RUSSELL  
REQUESTED BY...KYLE LAPHAM  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2613854.2/PDT  
.DELDT 05/19/26  
.FORMATTERVERSION 2.0.0  
.EMAIL DYLAN.WALTERS@DNR.WA.GOV,KYLE.LAPHAM@DNR.WA.GOV  
 
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