749  
FNUS75 KGJT 230447  
FWSGJT  
 
SPOT FORECAST FOR JOHNSON CREEK...STATE OF UTAH  
NATIONAL WEATHER SERVICE GRAND JUNCTION CO  
947 PM MST THU FEB 22 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON FEBRUARY 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
AN APPROACHING COLD FRONT WILL CAUSE SOME GUSTY SOUTHWEST WINDS  
TODAY REACHING 25 MPH AT TIMES. THESE GUSTY WINDS BRING DEEP  
MIXING ALLOWING THE CLEARING INDEX TO REACH OVER 1000. NUMEROUS  
SNOW AND SNOW SHOWERS WILL OCCUR AHEAD OF THE FRONT. THE BEST  
CHANCE FOR ANY PRECIPITATION WILL BE AS THE FRONT MOVES THROUGH  
WHICH WILL BE NEAR 6PM THIS EVENING. BY SATURDAY MORNING, ALL  
PRECIPITATION WILL BE OVER AS CLOUDS DECREASE. CLEARING INDEX WILL  
REACH 900 IN THE AFTERNOON FROM 3PM THROUGH 5PM BEFORE DROPPING  
BACK DOWN.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY (90-100%). SNOW AND SNOW SHOWERS WITH  
BLOWING SNOW AT TIMES.  
MAX TEMPERATURE.....27-32 F.  
MIN HUMIDITY........55-60%.  
WIND (20 FT)........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS UP TO  
25 MPH.  
MIXING HEIGHT.......9200 FT AGL.  
CLEARING INDEX......1050.  
   
FRIDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90%). PATCHY BLOWING SNOW IN  
THE EVENING. NUMEROUS SNOW SHOWERS.  
MIN TEMPERATURE.....4-9 F.  
MAX HUMIDITY........87-92%.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH WITH OCCASIONAL  
GUSTS TO 15 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......5100 FT AGL DECREASING TO 2100 FT AGL AFTER  
MIDNIGHT.  
CLEARING INDEX......810 DECREASING TO 420 AFTER MIDNIGHT.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%), THEN BECOMING MOSTLY  
SUNNY (20-30%).  
MAX TEMPERATURE.....27-32 F.  
MIN HUMIDITY........32-37%.  
WIND (20 FT)........NORTHWEST WINDS 5 MPH BECOMING SOUTHWEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......5600 FT AGL.  
CLEARING INDEX......580 INCREASING TO 900 AFTER 3PM.  
 

 
FORECASTER...TOM RENWICK  
REQUESTED BY...SAN JUAN COUNTY FIRE WARDEN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1802399.0/GJT  
.EMAIL HEBERHEYDER@UTAH.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CO Page
The Nexlab UT Page Main Text Page