421  
FNUS76 KHNX 230236  
FWSHNX  
 
SPOT FORECAST FOR SWANSON MDW RX...US FOREST SERVICE  
NATIONAL WEATHER SERVICE HANFORD CA  
736 PM PDT MON MAY 22 2023  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON MAY 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
A COOLING TREND WILL BEGIN AT THE BURN SITE TUESDAY, THOUGH HIGHS  
WILL REMAIN SEVERAL DEGREES ABOVE SEASONAL AVERAGES. TEMPERATURES  
WILL LOWER TO AROUND NORMAL WEDNESDAY AND CONTINUE FOR THE REST OF  
THE WEEK. EXPECT SMALL CHANGES IN HUMIDITY WITH MAINLY DIURNAL,  
TERRAIN-DRIVEN WINDS THROUGH THE REMAINDER OF THIS WEEK.  
   
TUESDAY  
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....68 TO 72.  
MIN HUMIDITY........35 TO 40 PERCENT.  
EYE LEVEL WINDS.....DOWNSLOPE 3 TO 6 MPH UNTIL 0800 PDT BECOMING  
UPSLOPE.  
SURROUNDING RIDGE...SOUTH TO SOUTHWEST 7 TO 13 MPH. GUSTS TO 20  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......RISING TO 5500 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
   
TUESDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....43 TO 47.  
MAX HUMIDITY........70 TO 75 PERCENT.  
EYE LEVEL WINDS.....UPSLOPE 2 TO 4 MPH UNTIL 2000 PDT BECOMING  
DOWNSLOPE.  
SURROUNDING RIDGE...EAST 4 TO 8 MPH.  
MIXING HEIGHT.......LOWERING TO LESS THAN 500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST AROUND 7 MPH.  
   
WEDNESDAY  
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....63 TO 67.  
MIN HUMIDITY........37 TO 42 PERCENT.  
EYE LEVEL WINDS.....LIGHT AND VARIABLE UNTIL 0800 PDT BECOMING  
UPSLOPE 3 TO 6 MPH.  
SURROUNDING RIDGE...SOUTHEAST 3 TO 6 MPH IN THE MORNING BECOMING  
SOUTHWEST 6 TO 10 MPH WITH GUSTS TO 15 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......RISING TO 5000 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 7 MPH.  
 
 
FORECASTER...OCHS  
REQUESTED BY...KELLY HAINES  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2313588.1/HNX  
.DELDT 05/23/23  
.FORMATTERVERSION 2.0.0  
.EMAIL KELLY.HAINES@USDA.GOV  
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