542  
FNUS75 KBYZ 222243  
FWSBYZ  
 
SPOT FORECAST FOR MOREAU PEAK RX...USFS  
NATIONAL WEATHER SERVICE BILLINGS MT  
443 PM MDT MON OCT 22 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 1700 MDT ON OCTOBER 22.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
   
..GUSTY SOUTHEAST WINDS TUESDAY
 
 
EASTERLY WINDS THIS EVENING WILL SHIFT TO THE SOUTHEAST OVERNIGHT  
AND INCREASE TO 10 TO 20 MPH BY EARLY TUESDAY. TUESDAY WILL BE  
WINDY WITH SOUTHEASTERLY GUSTS TO 30 MPH DURING THE AFTERNOON.  
HIGHS IN THE UPPER 50S CAN BE EXPECTED ON TUESDAY WITH MINIMUM RH  
VALUES IN THE UPPER 30S. CLOUDS WILL BE ON THE INCREASE DURING THE  
AFTERNOON. A COLD FRONT WILL MOVE THROUGH THE FIRE AREA LATE  
TUESDAY NIGHT/EARLY WEDNESDAY BRINGING A SLIGHT CHANCE FOR RAIN  
AND SHIFTING WINDS TO THE WEST.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....55-60.  
MIN HUMIDITY........23-28 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 4 TO 8 MPH.  
RIDGETOP...........EAST 5 TO 10 MPH.  
MIXING HEIGHT.......3600 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.  
HAINES INDEX........5.  
CWR.................0 PERCENT.  
 
TIME (MDT) 5PM  
SKY (%).........3  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............58  
RH..............29  
20 FT WIND DIR..E  
20 FT WIND SPD..4  
20 FT WIND GUST.8  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
MIN TEMPERATURE.....33-38.  
MAX HUMIDITY........70-75 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 5 TO 10 MPH IN THE EVENING...BECOMING  
SOUTHEAST 10 TO 20 MPH OVERNIGHT.  
RIDGETOP...........EAST 5 TO 10 MPH IN THE EVENING...BECOMING  
SOUTHEAST 10 TO 20 MPH OVERNIGHT.  
MIXING HEIGHT.......3600 FT AGL IN THE EVENING DECREASING TO 100 FT  
AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH IN THE EVENING SHIFTING  
TO THE SOUTHEAST 10 TO 20 MPH OVERNIGHT.  
CWR.................0 PERCENT.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........0 0 0 1 1 2 3 5 7 10 9 8  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............54 48 44 42 41 39 39 38 37 37 37 36  
RH..............37 42 46 50 51 53 55 57 62 63 68 66  
20 FT WIND DIR..E E E E SE SE SE SE SE SE SE SE  
20 FT WIND SPD..4 4 6 8 12 13 13 14 15 15 15 15  
20 FT WIND GUST.8 8 11 12 17 18 18 19 20 20 20 20  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING...WITH INCREASING  
CLOUDS IN THE AFTERNOON.  
MAX TEMPERATURE.....54-59.  
MIN HUMIDITY........33-39 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 15 TO 25 MPH. GUSTS UP TO 30  
MPH IN THE AFTERNOON.  
RIDGETOP...........SOUTHEAST 20 TO 30 MPH.  
MIXING HEIGHT.......100 FT AGL IN THE MORNING INCREASING TO 2400 FT  
AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHEAST 20 TO 30 MPH.  
HAINES INDEX........4.  
CWR.................0 PERCENT.  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........8 9 11 13 15 17 19 26 33 40 48 57  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............35 35 36 38 42 47 50 53 54 56 55 54  
RH..............70 68 72 68 61 52 47 40 37 37 42 44  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..14 14 14 14 15 16 17 18 20 22 22 21  
20 FT WIND GUST.19 19 19 19 20 22 23 28 29 31 31 29  
 

 
FORECASTER...PALMQUIST  
REQUESTED BY...BURN BOSS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1817163.3/BYZ  
.DELDT 10/22/18  
.EMAIL JDONAHEY@BLM.GOV  
 
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