579  
FWUS45 KRIW 221923  
SAGRIW  
 
FORECAST FOR BRIDGER-TETON NATIONAL FOREST AVALANCHE CENTER  
NATIONAL WEATHER SERVICE RIVERTON WY  
123 PM MDT SUN APR 22 2018  
 
   
DISCUSSION
 
HIGH PRESSURE WILL BE REPLACED BY LOWER PRESSURE AS  
A PACIFIC LOW PRESSURE SYSTEM OVER THE PACIFIC NORTHWEST MOVES  
EAST TONIGHT. THIS WILL BRING INCREASED CLOUDS WITH INCREASING  
SNOW SHOWERS BY MIDNIGHT. SNOW LEVELS AROUND 8800 FEET WILL LOWER  
TO 8500 FEET MONDAY MORNING. SNOW SHOWERS WILL BE RATHER  
WIDESPREAD THROUGH MONDAY INTO MONDAY EVENING BEFORE DECREASING  
AS THE LOW PRESSURE TROUGH SHIFTS EAST OF THE AREA. THIS IS THE  
LAST SCHEDULED FORECAST OF THE SEASON.  
 
FORECASTER...C.BAKER  
 
WYZ012-231115-  
RENDEZVOUS MOUNTAIN-TETON WY  
43.59N 110.89W ELEV. 10318 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 27 31 18 37 23  
TEMP 44 40 33 30 28 27 29 30 31 28 23 20 19 18 27 35 37 34 28 26 24 23  
DEWPT 16 22 27 27 25 25 24 25 25 23 20 18 17 15 15 20 19 19 19 19 17 16  
RH 32 48 78 88 88 92 81 81 78 81 88 92 92 88 60 54 48 54 68 74 74 74  
WIND DIR SW SW S SE SW W SW W NW N N NE NE E E E N NE NE E E E  
WIND SPD 16 13 10 10 11 11 11 16 16 16 16 17 17 14 11 11 12 9 12 11 9 10  
WIND GUST 23 23 24 24  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK SC SC SC FW FW FW FW CL CL CL CL  
CLOUDS(%) 57 99 99100100100100100100 73 73 54 43 40 28 24 24 17 6 4 6 8  
POP 12HR 90 80 30 10 0  
QPF 12HR 0.40 0.34 0.03 0 0  
SNOW 12HR 3 4 T 00-00 00-00  
RAIN SHWRS S C  
SNOW D D D D  
SNOWSHWRS C C O O C C  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 44 23 45 26 48 28 44 27 42  
TEMP 41 40 27 23 42 43 29 27 47 46 32 29 43 42 30 27 42 39  
DEWPT 23 24 20 17 26 25 22 20 30 30 26 24 30 32 27 24 30 30  
PWIND DIR S N SE S S S S S S  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS CL FW SC SC FW FW FW CL FW SC SC SC SC SC BK SC SC BK  
POP 12HR 0 10 5 0 10 20 30 30 30  
RAIN SHWRS S C C  
SNOWSHWRS S S C C C C C C  
TSTMS S S S  
 

 
 
WYZ013-231115-  
JACKSON AIRPORT-TETON WY  
43.60N 110.73W ELEV. 6451 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 37 47 25 53 26  
TEMP 60 60 51 44 41 37 41 45 46 45 37 31 28 25 36 49 52 51 41 34 30 26  
DEWPT 28 31 35 35 35 33 32 30 29 29 27 25 24 21 24 22 21 22 24 24 22 20  
RH 29 33 54 70 79 85 70 55 51 53 67 78 85 84 61 34 29 32 50 66 72 78  
WIND DIR SW SW S E S SE SW SW NW N N NE N E E E N NE E SE SE SE  
WIND SPD 9 6 3 3 4 3 5 8 8 10 10 10 9 8 8 4 5 4 5 5 5 5  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK SC SC SC SC FW FW FW CL CL CL CL  
CLOUDS(%) 48 84 81 89100100100100100 62 62 56 45 42 33 24 23 17 6 4 7 9  
POP 12HR 70 60 20 5 0  
QPF 12HR 0.19 0.11 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN C L L L  
RAIN SHWRS C C L L S  
SNOW L  
SNOWSHWRS S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 60 31 63 34 65 36 62 35 59  
TEMP 55 58 39 31 58 62 42 34 60 63 44 36 59 59 42 35 54 56  
DEWPT 26 28 28 25 30 29 30 28 32 31 33 31 37 35 33 31 31 31  
PWIND DIR S N SE N S S S SE S  
WIND CHAR LT LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW FW FW FW FW FW CL FW FW FW FW SC SC BK SC SC BK  
POP 12HR 0 5 0 0 5 10 20 20 20  
RAIN SHWRS S S S S S S S  
TSTMS S S S  
 

 
 
WYZ012-231115-  
SNOW KING MOUNTAIN-TETON WY  
43.46N 110.76W ELEV. 7810 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 33 42 25 48 25  
TEMP 53 48 41 37 35 33 36 41 42 38 32 29 26 25 32 45 48 42 34 30 27 25  
DEWPT 27 28 31 32 33 31 32 30 29 27 26 25 24 23 25 23 21 19 21 22 22 20  
RH 36 46 67 82 92 92 85 65 60 64 78 85 92 92 75 41 34 39 58 72 81 81  
WIND DIR SW SW S SE S S S W W N N NE NE E E E N N NE SE SE SE  
WIND SPD 9 8 6 8 9 4 8 9 10 12 12 11 9 8 8 6 6 9 6 8 8 8  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK SC SC SC SC FW FW FW CL CL CL CL  
CLOUDS(%) 44 93 90 97100100100100100 66 66 54 48 48 39 30 30 19 6 4 6 7  
POP 12HR 70 70 20 10 0  
QPF 12HR 0.20 0.11 0.01 0 0  
SNOW 12HR T 00-00 00-00 00-00 00-00  
RAIN L L  
RAIN SHWRS C C L L  
SNOW L L L L  
SNOWSHWRS C C  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 53 29 54 32 56 34 53 33 51  
TEMP 50 47 34 29 51 53 37 32 52 54 40 34 51 51 38 33 49 49  
DEWPT 26 24 25 24 26 25 26 25 27 27 30 29 35 35 31 29 30 30  
PWIND DIR S N SE N S S S SE S  
WIND CHAR GN LT LT LT LT LT LT LT LT  
AVG CLOUDS CL FW FW FW FW FW FW CL FW FW SC SC SC SC BK SC SC BK  
POP 12HR 0 5 0 0 5 20 30 20 30  
RAIN SHWRS S S S C S S C S  
TSTMS S S S  
 

 
 
WYZ012-231115-  
FREDS MOUNTAIN-TETON WY  
43.79N 110.93W ELEV. 9840 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 29 32 20 41 24  
TEMP 46 43 36 33 29 29 30 32 32 30 25 23 20 20 28 39 41 38 31 28 24 24  
DEWPT 38 39 31 32 28 27 26 28 29 28 23 21 17 15 15 29 33 32 25 24 18 17  
RH 73 86 82 96 96 92 85 85 88 92 92 92 88 81 58 67 73 79 78 85 77 74  
WIND DIR SW SW S SE S SW SW W NW N NE NE NE E E E N E NE SE SE SE  
WIND SPD 13 11 13 16 9 10 11 11 12 14 16 17 17 16 11 9 10 6 12 12 11 11  
WIND GUST 23 24 24 23  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK SC SC SC FW FW FW FW CL CL CL CL  
CLOUDS(%) 59100100100100100100100100 69 69 52 43 37 22 20 23 14 6 4 5 8  
POP 12HR 80 80 20 5 0  
QPF 12HR 0.44 0.35 0.03 0 0  
SNOW 12HR 3 3 T 00-00 00-00  
RAIN SHWRS S C C  
SNOW D D D D  
SNOWSHWRS C O O C C  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 46 25 48 29 51 31 47 29 45  
TEMP 44 42 30 25 46 47 32 30 49 49 35 31 46 45 32 29 45 42  
DEWPT 33 35 25 16 32 23 25 25 31 31 29 26 31 33 29 27 30 30  
PWIND DIR S N SE N S SW S S S  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS CL FW SC FW FW FW FW FW FW FW SC SC SC SC BK SC SC BK  
POP 12HR 0 10 0 0 10 20 30 30 30  
RAIN SHWRS S S C C C C C  
SNOWSHWRS S C C C C  
TSTMS S S S  
 

 
 
WYZ024-231115-  
BLIND BULL SUMMIT-LINCOLN WY  
42.97N 110.62W ELEV. 9000 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 28 38 22 42 21  
TEMP 49 44 35 33 29 28 34 37 38 34 28 26 23 23 33 40 42 37 28 26 22 22  
DEWPT 25 19 28 26 26 26 27 28 29 24 25 22 21 20 23 25 27 22 21 19 18 17  
RH 39 36 75 75 88 92 75 70 70 66 88 85 92 88 66 55 55 54 75 74 84 81  
WIND DIR SW S SE SE S W W W W NW NW NW E E E SE SE E SE SE SE SE  
WIND SPD 9 9 9 12 11 10 10 16 18 19 16 9 8 8 8 14 11 8 6 8 9 9  
WIND GUST 23 26 27 23  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK BK BK BK BK SC SC FW FW CL CL CL  
CLOUDS(%) 42 89 86 99100100100100100 68 68 67 68 72 72 44 45 30 14 6 5 7  
POP 12HR 60 60 20 20 5  
QPF 12HR 0.10 0.11 0.03 0.03 0  
SNOW 12HR 1 1 T T 00-00  
RAIN SHWRS C C C C S S  
SNOW C C L L  
SNOWSHWRS C C C C C S S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 48 25 48 27 51 30 47 28 45  
TEMP 46 43 31 26 46 46 32 27 49 47 34 30 46 43 33 28 44 43  
DEWPT 28 24 23 21 32 32 26 23 32 30 29 26 36 35 30 26 33 32  
PWIND DIR S NW NE S SE S S S S  
WIND CHAR GN GN LT LT LT LT GN LT GN  
AVG CLOUDS CL FW FW FW FW FW FW CL FW FW SC SC SC SC BK SC SC SC  
POP 12HR 0 0 0 0 10 20 30 30 30  
RAIN SHWRS S S S C C C C C  
SNOWSHWRS S S C C  
TSTMS S S S S  
 

 
 
WYZ024-231115-  
MOUNT COFFIN-LINCOLN WY  
42.64N 110.64W ELEV. 10870 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 29 36 21 38 23  
TEMP 46 43 36 34 31 29 32 35 36 33 27 25 23 22 27 36 38 35 29 27 25 24  
DEWPT 25 20 21 25 23 25 24 27 25 21 18 20 18 19 18 27 25 19 16 17 15 16  
RH 43 39 54 69 72 85 72 72 64 61 68 81 81 88 68 69 59 52 58 65 65 71  
WIND DIR SW SW S SE SW W W W W NW NW NW S S SE SE E SE S SE SE SE  
WIND SPD 11 11 9 12 12 14 12 18 19 23 20 10 9 9 11 20 17 11 8 6 9 5  
WIND GUST 25 27 32 28 28 24  
CLOUDS SC OV BK OV OV OV OV OV OV BK BK BK BK BK BK SC SC SC FW CL CL CL  
CLOUDS(%) 41 83 80 97 99100100100100 69 69 70 71 69 69 50 50 37 18 4 4 5  
POP 12HR 60 60 30 20 5  
QPF 12HR 0.10 0.10 0.03 0.02 0  
SNOW 12HR 1 1 T T 00-00  
RAIN SHWRS C C C C  
SNOW C C C C  
SNOWSHWRS C C C C C S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 46 27 46 28 48 30 46 29 43  
TEMP 43 43 32 28 43 44 32 29 47 44 33 31 45 42 33 29 43 40  
DEWPT 29 21 20 20 30 28 24 22 29 28 28 26 32 32 28 25 32 31  
PWIND DIR S NW E SW S S S SW SW  
WIND CHAR GN GN LT LT GN GN GN GN GN  
AVG CLOUDS CL FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC  
POP 12HR 0 0 5 0 20 30 40 30 30  
RAIN SHWRS S C C C C C C C  
SNOWSHWRS C C C C C C C  
TSTMS S S S  
 

 
 
WYZ024-231115-  
COMMISSARY RIDGE-LINCOLN WY  
42.57N 110.73W ELEV. 9340 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 32 41 23 42 24  
TEMP 52 48 40 37 34 32 35 41 41 38 30 28 25 24 30 41 42 39 31 29 26 25  
DEWPT 30 27 28 28 28 27 28 28 26 24 22 22 21 20 23 25 23 21 18 18 16 16  
RH 43 44 62 70 78 81 75 59 55 57 72 78 84 84 75 52 46 48 58 63 65 68  
WIND DIR SW SW S SE W W W W W NW NW NW S SE SE SE SE SE SE SE SE SE  
WIND SPD 10 9 8 10 6 11 10 13 17 19 16 8 6 8 9 16 13 10 6 8 8 6  
WIND GUST 24 27 23 23  
CLOUDS FW OV BK OV OV OV OV OV OV BK BK BK BK BK BK SC SC SC FW CL CL CL  
CLOUDS(%) 30 83 80 96 99100100 97 99 64 64 66 67 64 61 50 49 37 20 6 4 5  
POP 12HR 50 50 20 20 5  
QPF 12HR 0.09 0.09 0.02 0.01 0  
SNOW 12HR T T T T 00-00  
RAIN C C  
RAIN SHWRS C C C C  
SNOW C C C C  
SNOWSHWRS S S S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 50 30 52 31 53 33 51 32 48  
TEMP 49 46 35 31 51 49 35 32 52 49 35 34 50 47 36 32 48 46  
DEWPT 27 24 22 22 33 31 25 24 31 30 28 27 33 34 30 27 34 34  
PWIND DIR S NW SE S SE S S S S  
WIND CHAR GN GN LT LT LT LT GN GN GN  
AVG CLOUDS CL FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC  
POP 12HR 0 0 0 0 10 30 40 30 30  
RAIN SHWRS S C C C C C C C  
SNOWSHWRS C C  
TSTMS S S S  
 

 
 
WYZ024-231115-  
SPRING CREEK DIVIDE SNOTEL-LINCOLN WY  
42.53N 110.66W ELEV. 9000 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 33 43 24 43 24  
TEMP 53 51 42 38 35 33 37 42 43 41 32 29 26 24 32 42 43 41 32 29 26 25  
DEWPT 30 27 29 29 28 28 29 28 27 25 23 22 21 21 24 26 24 22 19 18 16 16  
RH 41 39 60 70 75 82 72 57 53 52 69 75 81 88 72 53 47 46 58 63 65 68  
WIND DIR SW SW SW SE SW W W W W NW NW NW S SE SE E E E SE SE SE SE  
WIND SPD 8 9 4 8 8 11 10 13 14 17 13 8 8 8 9 12 11 9 8 6 8 5  
WIND GUST 24  
CLOUDS SC OV BK OV OV OV OV OV OV BK BK BK BK BK SC SC SC SC FW CL CL CL  
CLOUDS(%) 32 81 78 94 98100100 96 98 64 64 66 67 63 59 50 49 37 20 4 4 5  
POP 12HR 50 50 20 20 0  
QPF 12HR 0.06 0.08 0.02 0 0  
SNOW 12HR 00-00 00-00 T T 00-00  
RAIN C C C  
RAIN SHWRS C C C C S  
SNOW C C C C  
SNOWSHWRS S S S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 52 30 52 31 54 33 52 32 48  
TEMP 50 49 36 31 51 51 35 32 52 50 36 34 51 48 37 32 48 46  
DEWPT 27 24 23 22 32 31 25 24 31 30 29 28 34 34 30 27 33 33  
PWIND DIR S NW E E SE S S SW SW  
WIND CHAR GN GN LT LT LT LT GN LT GN  
AVG CLOUDS CL FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC  
POP 12HR 0 0 0 0 10 30 30 20 30  
RAIN SHWRS S C C C C S C C  
SNOWSHWRS C C C C C  
TSTMS S S  
 

 
 
WYZ015-231115-  
LAVA MOUNTAIN-FREMONT WY  
43.66N 110.02W ELEV. 10430 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 26 31 14 35 19  
TEMP 43 41 33 29 28 26 28 30 31 29 21 17 16 14 22 30 35 33 26 22 21 19  
DEWPT 17 22 27 27 26 24 25 25 24 24 18 16 13 10 15 17 16 18 18 17 15 12  
RH 35 46 78 92 92 92 88 81 75 81 88 96 88 84 74 58 45 53 71 81 77 74  
WIND DIR W SW S SE SE SW W W W N NE E E E E E SE SE SE SE S S  
WIND SPD 12 10 9 10 10 9 10 13 13 16 17 17 16 11 12 13 9 6 10 9 8 6  
WIND GUST 23 24 24 23  
CLOUDS SC OV OV OV OV OV OV OV OV OV OV BK BK BK SC FW FW FW CL CL CL CL  
CLOUDS(%) 49 95 92100100100100100100 94 94 68 69 65 53 24 29 21 7 5 5 8  
POP 12HR 80 90 50 20 0  
QPF 12HR 0.15 0.33 0.08 0.01 0  
SNOW 12HR 1 4 1 T 00-00  
RAIN SHWRS C  
SNOW L L D D  
SNOWSHWRS C C O O C C S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 43 22 45 25 46 26 42 26 40  
TEMP 37 41 26 22 39 43 29 26 44 43 31 27 42 40 30 26 40 38  
DEWPT 19 21 22 16 25 27 22 20 28 28 25 23 29 29 26 24 30 29  
PWIND DIR SW NW SE S S S S SW S  
WIND CHAR GN GN GN LT LT LT GN GN GN  
AVG CLOUDS CL FW SC SC FW FW FW CL FW FW SC FW SC SC SC SC SC SC  
POP 12HR 0 20 10 0 5 10 30 30 30  
SNOWSHWRS S S S C C C C C  
TSTMS S S  
 

 
 
WYZ015-231115-  
TOGWOTEE MOUNTAIN LODGE-TETON WY  
43.83N 110.19W ELEV. 8710 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 30 36 18 43 20  
TEMP 49 44 36 33 32 30 33 36 36 32 24 21 19 18 29 41 43 37 28 24 22 20  
DEWPT 23 27 31 30 30 28 29 28 28 26 21 19 17 16 20 19 20 21 21 19 18 16  
RH 36 51 82 89 92 92 85 72 72 78 88 92 92 92 69 41 39 52 75 81 84 84  
WIND DIR SW SW SE SE S S SW W NW N NE E E E E E E S E SE SE SE  
WIND SPD 8 6 8 11 8 4 5 6 8 8 9 9 9 6 6 4 5 3 5 6 5 5  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK BK BK SC SC FW FW FW CL CL CL CL  
CLOUDS(%) 49 95 92100100100100100100 73 73 66 61 54 36 18 21 14 6 5 6 9  
POP 12HR 70 80 30 5 0  
QPF 12HR 0.18 0.29 0.02 0 0  
SNOW 12HR 1 2 T 00-00 00-00  
RAIN SHWRS C C L L  
SNOW L L L L  
SNOWSHWRS C L L C C  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 50 26 51 29 53 30 49 29 47  
TEMP 48 44 30 26 49 49 33 29 50 51 36 31 48 47 34 29 45 44  
DEWPT 20 25 25 22 25 25 25 24 23 24 27 26 32 32 28 26 29 29  
PWIND DIR SW N SE NE S S S SE S  
WIND CHAR GN LT LT LT LT LT LT LT LT  
AVG CLOUDS CL FW SC FW FW FW FW CL FW FW FW FW SC SC BK SC SC BK  
POP 12HR 0 10 5 0 5 5 30 30 30  
RAIN SHWRS S C C S C C  
SNOWSHWRS S S C  
TSTMS S S  
 

 
 
WYZ015-231115-  
BROOKS LAKE LODGE-FREMONT WY  
43.73N 110.01W ELEV. 9340 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 28 38 17 43 19  
TEMP 51 48 38 32 31 28 33 37 38 35 26 21 20 17 29 40 43 40 29 24 22 19  
DEWPT 21 26 30 28 29 25 27 27 26 25 22 19 18 14 19 20 19 21 20 17 16 13  
RH 30 42 73 85 92 88 78 67 62 66 85 92 92 88 66 44 38 46 69 74 77 77  
WIND DIR W SW SE SE SE W W W W NE NE E E E E SE SE SE SE SE S S  
WIND SPD 8 5 5 6 5 4 5 8 8 9 9 9 9 6 6 5 5 4 6 5 5 4  
CLOUDS SC OV OV OV OV OV OV OV OV OV OV BK BK BK SC FW FW FW CL CL CL CL  
CLOUDS(%) 49 96 93100100100100100100 87 87 64 65 63 45 23 27 19 7 5 5 8  
POP 12HR 70 80 40 10 0  
QPF 12HR 0.12 0.32 0.04 0 0  
SNOW 12HR 1 2 1 00-00 00-00  
RAIN SHWRS C C O O  
SNOW L L D D  
SNOWSHWRS C O O C C S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 50 24 53 28 55 29 51 28 48  
TEMP 46 47 29 24 50 51 33 29 54 52 34 30 51 50 34 29 48 45  
DEWPT 22 25 23 18 27 28 25 23 28 27 26 25 31 33 29 26 32 31  
PWIND DIR SW NW SE S S S S SE S  
WIND CHAR GN LT LT LT LT LT LT LT LT  
AVG CLOUDS CL FW SC SC FW FW FW CL FW FW SC FW SC SC SC SC SC SC  
POP 12HR 0 20 5 0 5 5 30 20 30  
RAIN SHWRS S S C S S C C  
SNOWSHWRS S S S S C  
TSTMS S S  
 

 
 
IDZ019-231115-  
PINE CREEK PASS SNOTEL-TETON ID  
43.57N 111.21W ELEV. 6720 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 37 45 26 51 28  
TEMP 61 60 51 45 40 38 39 40 41 39 35 32 28 26 36 46 50 50 40 34 30 29  
DEWPT 34 35 42 25 34 37 36 32 35 33 31 24 24 25 28 22 30 25 26 15 18 20  
RH 36 39 71 45 79 96 89 73 79 79 85 72 85 96 72 38 46 37 57 45 60 69  
WIND DIR SW SW S SE W S SW W NW N N NE NE E SE N NW N NE E E SE  
WIND SPD 11 8 6 5 8 5 8 9 5 6 5 6 8 8 6 3 4 5 3 5 5 6  
CLOUDS SC BK BK OV OV OV OV OV OV OV OV SC SC FW FW CL CL CL CL CL CL FW  
CLOUDS(%) 33 61 61100100 99 99 92 92 81 81 36 36 20 20 3 3 3 3 7 7 21  
POP 12HR 100 60 20 0 0  
QPF 12HR 0.20 0.10 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C C D D C C L L  
SNOWSHWRS L L S S  
TSTMS S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 60 34 62 36 69 40 64 36 58  
TEMP 52 57 42 34 52 56 42 35 57 63 46 37 56 61 47 39 56 60  
DEWPT 20 28 18 27 23 28 19 28 28 34 22 31 32 38 28 34 31 36  
PWIND DIR S N NE N S S S S S  
WIND CHAR LT GN LT LT LT LT GN GN GN  
AVG CLOUDS FW SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC  
POP 12HR 5 5 5 0 10 10 30 20 30  
RAIN SHWRS S C S S S C  
TSTMS C S C  
 

 
 
IDZ023-231115-  
SHEEP MOUNTAIN SNOTEL - BINGHAM ID  
43.21N 111.69W ELEV. 6570 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 37 47 29 51 34  
TEMP 61 63 52 44 40 38 39 40 42 41 37 33 30 29 36 44 50 50 43 38 36 33  
DEWPT 33 29 37 33 35 35 34 32 32 31 29 25 24 23 25 25 26 23 23 19 19 18  
RH 35 27 56 65 82 89 82 73 67 67 72 72 78 78 64 47 39 34 45 46 50 53  
WIND DIR SW SW S SW W S SW W NW N N N NE E SE E NE N N E SE SE  
WIND SPD 11 9 12 13 12 11 17 17 13 13 13 10 6 5 5 2 4 5 6 5 9 10  
WIND GUST 20 21 20 25 25 21 21 21  
CLOUDS SC BK BK OV OV OV OV OV OV OV OV SC SC FW FW CL CL CL CL CL CL FW  
CLOUDS(%) 31 64 64100100 86 86 86 86 90 90 43 43 12 12 2 2 2 2 6 6 20  
POP 12HR 100 70 20 0 0  
QPF 12HR 0.23 0.12 0.01 0 0  
SNOW 12HR T 00-00 00-00 00-00 00-00  
RAIN SHWRS S S D D C C L L  
SNOWSHWRS D D C C L L S S  
TSTMS S S S S  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 59 39 61 40 64 43 62 36 57  
TEMP 51 57 42 38 52 58 43 40 58 65 46 41 57 63 45 40 56 62  
DEWPT 23 22 24 25 26 23 26 27 32 31 30 31 36 36 31 30 32 30  
PWIND DIR S NW E S SE S S S S  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS FW FW SC FW FW FW FW FW FW FW SC SC SC SC SC SC SC SC  
POP 12HR 0 0 5 0 10 20 20 20 30  
RAIN SHWRS S S S S S C C  
TSTMS S S S C  
 

 
 
WYZ001-231115-  
SYLVAN PASS - PARK WY  
44.47N 110.16W ELEV. 8420 FT  
123 PM MDT SUN APR 22 2018  
 
DATE 04/22/18 MON 04/23/18 TUE 04/24/18 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 27 33 14 41 19  
TEMP 48 40 33 30 28 27 29 33 33 26 19 17 15 14 24 40 41 32 25 22 20 19  
DEWPT 22 25 26 26 27 26 26 27 27 22 16 15 13 12 15 17 17 17 16 15 15 14  
RH 35 55 75 85 96 96 88 78 78 85 88 92 92 92 68 39 37 53 68 74 81 80  
WIND DIR SW SW S SE SW S E NE E NE E E E E E E E SE S S S S  
WIND SPD 17 11 12 13 9 10 8 9 17 14 12 12 11 10 8 10 9 8 6 5 6 8  
WIND GUST 25 24  
CLOUDS SC OV OV OV OV OV OV OV OV BK BK BK SC SC FW CL CL CL CL CL CL FW  
CLOUDS(%) 55100 98100100100100100100 74 74 66 51 37 11 5 8 6 3 4 6 12  
POP 12HR 70 80 30 5 0  
QPF 12HR 0.26 0.41 0.01 0 0  
SNOW 12HR 2 4 T 00-00 00-00  
RAIN SHWRS C  
SNOW L L D D  
SNOWSHWRS C C L O C C  
 
DATE 04/25/18 THU 04/26/18 FRI 04/27/18 SAT 04/28/18 SUN 04/29/18  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 49 23 50 27 53 28 49 28 46  
TEMP 48 39 27 23 49 49 32 27 49 50 33 28 48 47 32 28 43 43  
DEWPT 24 24 22 19 23 24 24 21 25 25 27 24 32 32 28 25 30 32  
PWIND DIR SW NW N N SW S S S S  
WIND CHAR GN LT LT LT LT LT LT LT LT  
AVG CLOUDS FW FW SC SC FW FW FW CL FW FW FW FW SC SC SC SC SC BK  
POP 12HR 0 20 5 0 5 5 30 30 30  
RAIN SHWRS S S C C C C  
SNOWSHWRS S S S C  
TSTMS S S  
 

 
 
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT  
 
DAY 1 THROUGH DAY 3...  
MAX/MIN TEMP OR MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE  
TEMP(F).............................AIR TEMPERATURE  
DEWPT(F)............................DEW POINT TEMPERATURE  
RH(%)...............................RELATIVE HUMIDITY  
WIND DIR(8 POINT COMPASS)...........WIND DIRECTION  
WIND SPD(MPH).......................WIND SPEED  
CLOUDS(CAT).........................CLOUD COVER CATEGORY  
CL.....CLEAR/SUNNY.......................0% TO =< 10%  
FW.....MOSTLY CLEAR/MOSTLY SUNNY......> 10% TO =< 30%  
SC.....PARTLY CLOUDY/PARTLY SUNNY.....> 30% TO =< 60%  
BK.....MOSTLY CLOUDY..................> 60% TO =< 80%  
OV.....CLOUDY.........................> 80% TO =< 100%  
CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE  
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION  
QPF 12HR(IN.).......................AMOUNT OF LIQUID PRECIPITATION  
SNOW 12HR(MIN-MAX - IN.)............RANGE OF SNOWFALL  
WEATHER...  
TYPE...  
RAIN...........RAIN  
RAIN SHWRS.....RAIN SHOWERS  
SPRINKLES......SPRINKLES  
TSTMS..........THUNDERSTORMS  
DRIZZLE........DRIZZLE  
SNOW...........SNOW  
SNOWSHWRS......SNOW SHOWERS  
FLURRIES.......SNOW FLURRIES  
SLEET..........SLEET  
FRZG RAIN......FREEZING RAIN  
FRZG DRZL......FREEZING DRIZZLE  
COVERAGE...  
IS.............ISOLATED  
SC.............SCATTERED  
NM.............NUMEROUS  
O..............OCCASIONAL  
S..............SLIGHT CHANCE  
C..............CHANCE  
L..............LIKELY  
WD.............WIDESPREAD  
D..............DEFINITE  
AR.............AREAS  
PA.............PATCHY  
OBVIS...............................OBSTRUCTION TO VISIBILITY  
F.......FOG  
PF......PATCHY FOG  
F+......DENSE FOG  
PF+.....PATCHY DENSE FOG  
H.......HAZE  
BS......BLOWING SNOW  
K.......SMOKE  
BD......BLOWING DUST  
VA......VOLCANIC ASH  
DAY 4 THROUGH DAY 7...  
MAX/MIN TEMP OR MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE  
TEMP(F).............................AIR TEMPERATURE  
DEWPT(F)............................DEW POINT TEMPERATURE  
PWIND DIR(8 POINT COMPASS)..........PREDOMINANT WIND DIRECTION IN 12HR PERIOD  
WIND CHAR(MAX SUSTAINED IN 12HR)....WIND CHARACTERISTIC  
LT.....LIGHT; < 8 MPH  
GN.....GENTLE; 8 - 14 MPH  
BZ.....BREEZY; 15 - 22 MPH  
WY.....WINDY; 23 - 30 MPH  
VW.....VERY WINDY; 31 - 39 MPH  
SD.....STRONG/DAMAGING; >= 40 MPH  
AVG CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY  
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS  
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION  
WEATHER...  
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS  
 
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