530  
FNUS75 KCYS 120129  
FWSCYS  
 
SPOT FORECAST FOR GREEN RIDGE...BLM  
NATIONAL WEATHER SERVICE CHEYENNE WY  
729 PM MDT MON SEP 11 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 2000 MDT ON SEPTEMBER 11. IF  
CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT 307-772-2227, IF YOU HAVE QUESTIONS OR  
CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
A PASSING WEAK UPPER DISTURBANCE WILL TRIGGER A FEW SHOWERS AND  
THUNDERSTORMS EARLY THIS EVENING. WARM AND DRY CONDITIONS WITH  
LIGHT WINDS WILL PREVAIL TUESDAY. ANOTHER DISTURBANCE APPROACHES  
LATE WEDNESDAY WITH ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS.  
NIGHTTIME HUMIDITY RECOVERY WILL BE FAIR. GUSTY AND ERRATIC WINDS  
WILL BE POSSIBLE NEAR THUNDERSTORMS.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS EARLY IN THE EVENING.  
CWR.................0 PERCENT.  
LAL.................1.  
TEMPERATURE.........70 AT REQUEST...MIN 55.  
RH..................46 PERCENT AT REQUEST...MAX 69 PERCENT.  
WIND (20 FT)........WINDS SOUTHEAST AT 6 MPH AT REQUEST...OTHERWISE  
SOUTHWEST WINDS 5 TO 8 MPH. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
EARLY IN THE EVENING.  
MIXING HEIGHT.......2100 FT AGL AT REQUEST...OTHERWISE 800-2100  
FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 8 TO 15 MPH.  
SMOKE DISPERSAL.....FAIR /21800 KNOT-FT/ AT REQUEST. MIN...POOR  
/7400 KNOT-FT/.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH AT REQUEST...MAX 3.  
   
TUESDAY
 
 
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY.  
CWR.................0 PERCENT.  
LAL.................1.  
TEMPERATURE.........MAX 86.  
RH..................MIN 21 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH EARLY IN THE  
MORNING BECOMING LIGHT.  
MIXING HEIGHT.......1800 FT AGL INCREASING TO 11100 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....WEST 5 TO 7 MPH EARLY IN THE MORNING BECOMING  
LIGHT AND VARIABLE.  
SMOKE DISPERSAL.....POOR TO FAIR (6400-21900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TUESDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
LAL.................1.  
TEMPERATURE.........MIN 58.  
RH..................MAX 49 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 6 MPH AFTER  
MIDNIGHT.  
MIXING HEIGHT.......800-1700 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 9 MPH.  
SMOKE DISPERSAL.....POOR TO POOR (5300-7800 KNOT-FT).  
HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL  
FOR LARGE PLUME DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF RAIN SHOWERS AND ISOLATED  
THUNDERSTORMS IN THE AFTERNOON.  
CWR.................3 PERCENT.  
LAL.................1 UNTIL 1200, THEN 2.  
TEMPERATURE.........MAX 85.  
RH..................MIN 19 PERCENT.  
WIND (20 FT)........WEST WINDS 6 TO 7 MPH. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......1100 FT AGL INCREASING TO 14500 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....WEST 9 TO 13 MPH.  
SMOKE DISPERSAL.....POOR (10100 KNOT-FT) INCREASING TO EXCELLENT  
(147400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL  
FOR LARGE PLUME DOMINATED FIRE GROWTH.  
 

 
FORECASTER...JAMSKI  
REQUESTED BY...ADAM  
TYPE OF REQUEST...WILDFIRE  
.TAG 1715728.0/CYS  
.EMAIL CASPER_DISPATCH@YAHOO.COM  
 
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