939  
FNUS76 KOTX 231238  
FWSOTX  
 
SPOT FORECAST FOR COLUMBIA NWR DITCHES RX...COLUMBIA NWR  
NATIONAL WEATHER SERVICE SPOKANE WA  
538 AM PDT THU MAR 23 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 PDT ON MARCH 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
WEAK HIGH PRESSURE IN PLACE TODAY WILL LEAD TO FILTERED SUNSHINE  
AND DRY CONDITIONS. WEST WINDS THIS MORNING WILL BECOME SOUTHERLY  
BY MIDDAY WITH SPEEDS GENERALLY AROUND 10 MPH OR LESS. LOOK FOR  
WINDS TO SWITCH AROUND TO THE EAST OVERNIGHT AS THE NEXT STORM  
SYSTEM APPROACHES THE COAST. LIGHT RAIN WILL SPREAD OVER THE  
PROJECT EARLY FRIDAY MORNING WITH SHOWERS AND COOLER TEMPERATURES  
EXPECTED THROUGH MUCH OF THE DAY.  
 
***************************************************************  
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE  
10 MINUTE AVERAGES REFLECTING RAWS WIND.  
***************************************************************  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY...INCREASING HIGH CLOUDS IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....56.  
MIN HUMIDITY........39 PERCENT.  
WIND (20 FT)........WEST 6 TO 10 MPH IN THE MORNING...BECOMING  
SOUTH 5 TO 9 MPH AFTER 1000 PDT.  
MIXING HEIGHT.......500 FT AGL IN THE MORNING...BECOMING 2100 FT  
AGL BETWEEN 1400 AND 1600 PDT.  
TRANSPORT WINDS.....WEST 6 TO 12 MPH IN THE MORNING...BECOMING  
SOUTH 3 TO 7 MPH AFTER 1000 PDT.  
HAINES INDEX........3 VERY LOW.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN OVERNIGHT.  
CWR.................10 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....41.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 4 TO 9 MPH.  
MIXING HEIGHT.......NEAR SURFACE.  
TRANSPORT WINDS.....EAST/SOUTHEAST 5 TO 8 MPH.  
HAINES INDEX........3 VERY LOW.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY. RAIN IN THE MORNING, THEN RAIN SHOWERS  
IN THE AFTERNOON.  
CWR.................45 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....54.  
MIN HUMIDITY........58 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 4 TO 8 MPH IN THE MORNING...  
BECOMING SOUTH 7 TO 13 MPH WITH GUSTS TO  
20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......NEAR SURFACE IN THE MORNING INCREASING TO 1700 FT  
AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTH 7 TO 12 MPH.  
HAINES INDEX........2 VERY LOW.  
 

 
FORECASTER...SB  
REQUESTED BY...TIMOTHY CAWLEY-MURPHREE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1704970.0/OTX  
 
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