912  
FNUS75 KBYZ 141403  
FWSBYZ  
 
SPOT FORECAST FOR YELLOWSTONE TRAIL RX...BILLINGS CITY COLLEGE  
NATIONAL WEATHER SERVICE BILLINGS MT  
803 AM MDT SUN APR 14 2024  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 14.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
TODAY WILL BE DRY WITH GENERALLY LIGHT WINDS. WINDS WILL HAVE A  
TENDENCY TO TURN TO THE EAST BY LATE AFTERNOON, BUT WILL ALSO  
DISPLAY AN UPSLOPE COMPONENT AS THE DAY HEATS UP. HUMIDITY WILL  
FALL INTO THE TEENS BY LATE AFTERNOON. A SYSTEM FROM THE SOUTHWEST  
WILL APPROACH THE AREA LATE TONIGHT AND THIS WILL SPREAD CLOUDS IN  
AND BRING A SLIGHT CHANCE OF A SHOWER. MONDAY WILL BE A LITTLE  
COOLER WITH WINDS STARTING FROM THE WEST. WINDS WILL TURN TO THE  
NORTHEAST BY AFTERNOON WITH SOME GUSTS OVER 20 MPH. THERE WILL BE  
AN INCREASING CHANCE OF SHOWERS AND THUNDERSTORMS BY MONDAY  
AFTERNOON. HUMIDITY WILL BE HIGHER ON MONDAY, WITH COOLER  
TEMPERATURES AND MORE CLOUD COVER. TWH  
 
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
LAL.................1...NO THUNDERSTORMS.  
MAX TEMPERATURE.....77-82.  
MIN HUMIDITY........14-19 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 6 TO 14 MPH. WINDS TURING EAST  
LATE AFTERNOON.  
RIDGETOP...........SOUTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......AROUND 1500 FT AGL IN THE EARLY MORNING,  
INCREASING TO AROUND 10000 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.  
HAINES INDEX........4.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT.  
CWR.................0 PERCENT.  
LAL.................1...NO THUNDERSTORMS.  
MIN TEMPERATURE.....46-51.  
MAX HUMIDITY........67-72 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 4 TO 12 MPH IN THE EVENING, TURNING  
TO THE NORTH TO NORTHEAST LATE EVENING, THEN  
TO THE WEST OVERNIGHT.  
RIDGETOP...........SOUTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......AROUND 8000 FT AGL EARLY IN THE EVENING,  
DECREASING TO AROUND 500 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
CWR.................18 PERCENT.  
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.  
MAX TEMPERATURE.....68-73.  
MIN HUMIDITY........29-34 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 6 TO 14 MPH IN THE EARLY MORNING,  
TURNING NORTHWEST BY LATE MORNING, THEN NORTHEAST  
8 TO 16 MPH WITH GUSTS TO 22 MPH BY EARLY AFTERNOON.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
IN THE AFTERNOON.  
RIDGETOP...........SOUTHEAST AROUND 10 MPH IN THE MORNING, BECOMING  
NORTHEAST IN THE AFTERNOON.  
MIXING HEIGHT.......AROUND 500 FT AGL EARLY IN THE MORNING, INCREASING  
TO AROUND 5000 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.  
HAINES INDEX........4.  
 

 
FORECASTER...HUMPHREY  
REQUESTED BY...TAIG ODONNELL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2410714.0/BYZ  
.DELDT 04/14/24  
.FORMATTERVERSION 2.0.0  
.EMAIL TAIGODONNELL@YAHOO.COM  
 
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