913  
SXUS45 KFGZ 201031  
RECFGZ  
AZZ401-000000-  
 
RECREATIONAL FORECAST FOR GRAND CANYON NATIONAL PARK  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
330 AM MST MON AUG 20 2018  
 
GRAND CANYON BACKCOUNTRY-  
   
TODAY...MOSTLY SUNNY IN THE MORNING
 
PARTLY CLOUDY WITH A  
10 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. LIGHT WINDS  
BECOMING SOUTHWEST AROUND 15 MPH WITH GUSTS TO AROUND 30 MPH IN  
THE AFTERNOON.    
TONIGHT
 
MOSTLY CLEAR. A SLIGHT CHANCE OF THUNDERSTORMS IN THE  
EVENING...A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. SOUTHWEST  
WINDS AROUND 15 MPH WITH GUSTS TO AROUND 30 MPH IN THE EVENING  
BECOMING LIGHT. CHANCE OF THUNDERSTORMS 10 PERCENT.    
TUESDAY
 
NOT AS HOT. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. THUNDERSTORMS LIKELY. SOUTHWEST WINDS AROUND  
15 MPH WITH GUSTS TO AROUND 30 MPH. CHANCE OF THUNDERSTORMS  
60 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
THUNDERSTORMS.    
WEDNESDAY
 
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF  
THUNDERSTORMS.  
 
TEMPERATURE  
 
HIGH LOW HIGH LOW HIGH  
PHANTOM RANCH 106 74 98 72 95  
INDIAN GARDEN 99 72 92 67 89  
NEAR RIM 90 63 82 61 81  
 
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GRAND CANYON RIM-  
   
TODAY
 
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY CLOUDY.  
A 10 PERCENT CHANCE OF THUNDERSTORMS. LIGHT WINDS BECOMING  
SOUTHWEST AROUND 15 MPH WITH GUSTS TO AROUND 30 MPH IN THE  
AFTERNOON.    
TONIGHT
 
MOSTLY CLEAR. A SLIGHT CHANCE OF THUNDERSTORMS IN THE  
EVENING...A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. SOUTHWEST  
WINDS AROUND 15 MPH WITH GUSTS TO AROUND 30 MPH IN THE EVENING  
BECOMING LIGHT. CHANCE OF THUNDERSTORMS 20 PERCENT.    
TUESDAY
 
NOT AS WARM. PARTLY CLOUDY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. THUNDERSTORMS LIKELY. SOUTHWEST WINDS  
AROUND 15 MPH WITH GUSTS TO AROUND 30 MPH. CHANCE OF  
THUNDERSTORMS 60 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
THUNDERSTORMS.    
WEDNESDAY
 
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF  
THUNDERSTORMS.  
 
TEMPERATURE  
 
HIGH LOW HIGH LOW HIGH  
SOUTH RIM 89 54 81 52 79  
NORTH RIM 85 58 79 57 77  
 
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WEATHER.GOV/FLAGSTAFF  
 

 
=  
 
AZZ402-000000-  
 
SAN FRANCISCO PEAKS RECREATIONAL FORECAST  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
331 AM MST MON AUG 20 2018  
   
SYNOPSIS
 
EXPECT LIMITED STORM ACTIVITY INTO MONDAY, WITH A  
SIGNIFICANT MOISTURE INCREASE BY TUESDAY. THE REMAINDER OF THE WEEK  
FROM TUESDAY ONWARD WILL FEATURE MODERATE TO HIGH GRADE MONSOON  
ACTIVITY.  
 
   
MONDAY
 
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN  
THE LATE MORNING AND AFTERNOON.   
MONDAY NIGHT
 
MOSTLY CLEAR. A CHANCE OF THUNDERSTORMS. CHANCE  
OF THUNDERSTORMS 20 PERCENT.   
TUESDAY
 
PARTLY SUNNY WITH A 50 PERCENT CHANCE OF  
THUNDERSTORMS.   
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
THUNDERSTORMS.   
WEDNESDAY
 
PARTLY SUNNY WITH A CHANCE OF THUNDERSTORMS IN THE  
MORNING, THEN MOSTLY CLOUDY WITH THUNDERSTORMS LIKELY IN THE  
AFTERNOON. CHANCE OF THUNDERSTORMS 60 PERCENT.  
 
--------------------------------------------------------------------  
 
HIGH AND LOW TEMPERATURE FORECASTS FOR SELECTED LOCATIONS.  
RIDGE-TOP WINDS AND WINDCHILL INCLUDED FOR 12000 FT.  
 
MON MON NIGHT TUE TUE NIGHT WED  
 
 
12000 FT (RIDGE-TOP) 45 F 43 F 43 F 37 F 40 F  
WIND MPH SW 10 SW 11 S 16 S 21 SW 25  
MIN WIND CHILL 38 F 36 F 30 F 25 F 26 F  
 
10000 FT 66 F 50 F 60 F 48 F 62 F  
 
7500 FT 84 F 57 F 76 F 55 F 76 F  
 
++RIDGE-TOP WINDS ARE THE AVERAGE CONDITIONS OVER 12 HOURS IN THE  
FREE AIR AT 12000 FT. WIND SPEEDS AT THE LOWER ELEVATIONS WILL BE  
VERY DEPENDENT ON WIND DIRECTION. THEY MAY BE STRONGER THAN THE  
RIDGE-TOP WINDS DOWNWIND OF THE RIDGELINE AND WEAKER ON THE UPWIND  
SIDE. FORECAST ELEVATIONS LISTED ABOVE ARE APPROXIMATE.  
 
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EXTENDED FORECAST
 
 
   
WEDNESDAY NIGHT AND THURSDAY
 
PARTLY CLOUDY. A CHANCE OF  
THUNDERSTORMS.    
THURSDAY NIGHT AND FRIDAY
 
PARTLY CLOUDY. A CHANCE OF  
THUNDERSTORMS.    
FRIDAY NIGHT
 
PARTLY CLOUDY. A CHANCE OF THUNDERSTORMS.    
SATURDAY
 
PARTLY SUNNY. A CHANCE OF THUNDERSTORMS.    
SATURDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. A CHANCE OF THUNDERSTORMS.    
SUNDAY
 
PARTLY SUNNY. A CHANCE OF THUNDERSTORMS.  
 
--------------------------------------------------------------------  
 
WEATHER.GOV/FLAGSTAFF  
 

 
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