220  
FWUS45 KRIW 262017  
SAGRIW  
 
FORECAST FOR BRIDGER-TETON NATIONAL FOREST AVALANCHE CENTER  
NATIONAL WEATHER SERVICE RIVERTON WY  
217 PM MDT SUN APR 26 2020  
 
   
DISCUSSION
 
 
ANY LINGERING SHOWERS WILL DIMINISH BY SUNSET SUNDAY WITH DRY  
CONDITIONS ANTICIPATED OVERNIGHT. ANOTHER WEAK WEATHER SYSTEM WILL  
TRACK EAST THROUGH NORTHWEST WYOMING MONDAY WITH SCATTERED SHOWERS  
DEVELOPING IN THE EARLY AFTERNOON AND LINGERING THROUGH ABOUT MID-  
EVENING. DRIER WESTERLY FLOW DEVELOPS IN THE WAKE OF THIS SYSTEM  
WITH A RIDGE ANTICIPATED FOR WEDNESDAY. TEMPERATURES WILL BEGIN A  
STEADY CLIMB TO WELL ABOVE NORMAL READINGS BY WEDNESDAY WHEN ACTIVE  
MID-MOUNTAIN SNOWMELT IS ANTICIPATED. EXPECT GUSTY WESTERLY RIDGETOP  
WIND OF 20 TO 35 MPH BOTH MONDAY AND TUESDAY AFTERNOONS.  
 
FORECASTER...TEAM RIVERTON  
 
WYZ012-271130-  
RENDEZVOUS MOUNTAIN-TETON WY  
43.59N 110.89W ELEV. 10318 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 47 23 44 28  
TEMP 39 38 33 32 31 30 36 46 46 38 30 28 26 23 32 38 44 41 32 32 29 29  
DEWPT 32 31 26 27 24 25 28 32 32 28 23 23 20 20 25 25 25 22 20 20 20 21  
RH 76 76 75 81 75 81 72 58 58 67 75 81 78 88 75 59 47 46 61 61 69 72  
WIND DIR W W W SW SW SW SW W W W W W W W W W W W SW S S S  
WIND SPD 16 18 17 14 16 16 16 20 21 24 19 18 17 17 11 11 12 12 13 13 14 13  
WIND GUST 25 24 21 23 23 28 29 33 27 26 24 25 18 18 20 19  
CLOUDS BK SC FW FW FW SC SC OV OV BK BK SC SC SC FW FW FW FW FW FW FW SC  
CLOUDS(%) 65 36 30 25 20 39 53 83 83 67 62 43 47 44 29 18 25 19 11 23 21 33  
POP 12HR 10 60 30 0 0  
QPF 12HR 0 0.20 0.05 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS L L  
SNOWSHWRS C S S C C S  
TSTMS S C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 55 36 49 28 37 23 38 24 35  
TEMP 51 50 38 36 49 41 30 28 35 33 26 23 37 33 24 24 35 30  
DEWPT 31 34 28 30 34 31 23 24 26 21 19 18 24 22 19 19 23 21  
PWIND DIR S S SW SW W W SW SW SW  
WIND CHAR GN BZ BZ BZ BZ BZ GN BZ BZ  
AVG CLOUDS SC SC BK OV OV BK SC BK BK BK SC SC SC SC SC SC BK BK  
POP 12HR 5 30 60 40 40 30 40 30 50  
RAIN S C C L C  
SNOW C C C C C S C C C C C C C  
 

 
 
WYZ013-271130-  
JACKSON AIRPORT-TETON WY  
43.60N 110.73W ELEV. 6451 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 34 54 30 56 32  
TEMP 51 49 48 43 37 34 39 50 53 54 46 40 34 30 38 50 54 55 45 39 35 32  
DEWPT 40 39 37 35 33 31 33 35 36 34 35 32 30 26 29 31 29 29 31 30 29 27  
RH 66 68 65 73 85 89 79 56 52 46 65 73 85 85 70 48 38 37 58 70 78 81  
WIND DIR SW SW SW S S S S SW SW SW SW SW SW S SW SW W W SW S SE SE  
WIND SPD 11 10 8 8 6 5 6 13 14 12 10 9 6 5 10 10 9 10 4 5 5 5  
CLOUDS SC SC FW CL FW SC SC BK OV BK SC SC SC SC FW FW FW FW FW FW FW SC  
CLOUDS(%) 57 35 21 6 15 38 53 79 83 66 60 45 46 45 29 17 17 17 12 22 20 33  
POP 12HR 5 50 20 0 0  
QPF 12HR 0 0.07 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C C C S S S  
TSTMS S C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 65 39 58 34 55 30 56 31 54  
TEMP 58 63 45 39 55 57 42 34 51 53 37 30 51 52 37 31 51 49  
DEWPT 36 38 36 34 39 38 34 30 34 32 28 25 31 31 27 26 33 29  
PWIND DIR S S S S SW SW SW S SW  
WIND CHAR LT LT GN GN LT LT LT LT LT  
AVG CLOUDS SC SC BK OV OV BK SC SC SC BK SC SC SC SC SC SC BK BK  
POP 12HR 0 20 40 30 30 30 40 20 40  
RAIN S C C C C S C S C S C S S S C  
SNOW C S S S  
 

 
 
WYZ013-271130-  
BT AVALANCHE CENTER-TETON WY  
43.59N 110.83W ELEV. 6320 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 57 35 58 36  
TEMP 50 50 48 45 41 38 40 53 55 56 46 43 38 35 41 50 56 57 47 44 38 36  
DEWPT 38 37 32 32 31 31 32 34 34 34 30 30 29 27 31 31 29 28 29 29 29 29  
RH 63 61 54 60 67 76 73 48 45 43 53 60 70 72 67 48 35 33 49 55 70 75  
WIND DIR SW W SW S S S S SW SW W SW SW SW W SW SW W W SW S SE SE  
WIND SPD 10 10 9 8 8 6 6 13 14 12 10 9 8 5 9 10 9 10 5 6 5 5  
WIND GUST 13  
CLOUDS BK SC FW FW FW SC SC BK BK BK SC SC SC SC FW FW FW FW FW FW FW SC  
CLOUDS(%) 61 33 28 15 15 38 51 77 80 64 58 43 46 43 29 18 20 17 12 23 20 32  
POP 12HR 10 60 30 0 0  
QPF 12HR 0 0.15 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C S L L C S S  
TSTMS S C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 68 44 60 37 57 35 58 35 56  
TEMP 62 66 50 44 58 57 45 37 54 55 42 35 54 55 41 35 54 51  
DEWPT 38 37 35 35 41 35 32 30 37 33 27 26 33 32 27 25 35 30  
PWIND DIR S S S S SW SW SW S SW  
WIND CHAR LT GN LT GN LT LT LT LT LT  
AVG CLOUDS SC SC BK OV OV BK SC SC BK BK SC SC SC SC SC SC BK BK  
POP 12HR 0 30 50 30 30 30 40 30 40  
RAIN C C C C C C C S C C C C S C C  
 

 
 
WYZ012-271130-  
SNOW KING MOUNTAIN-TETON WY  
43.46N 110.76W ELEV. 7810 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 35 56 32 56 33  
TEMP 50 49 44 40 37 35 42 54 55 51 41 37 34 32 40 49 55 54 42 38 35 34  
DEWPT 37 36 35 33 32 30 35 36 36 35 33 31 30 27 31 32 31 31 30 28 28 28  
RH 61 61 70 76 82 82 76 50 49 54 73 79 85 81 70 52 40 41 62 67 75 78  
WIND DIR SW W SW S S S S SW SW W SW SW SW S SW SW W W SW S SE SE  
WIND SPD 9 9 6 6 6 6 8 12 13 12 9 9 8 9 9 10 10 10 5 6 6 8  
CLOUDS SC SC FW CL FW SC SC BK OV BK SC SC SC SC FW FW FW FW FW FW FW FW  
CLOUDS(%) 58 34 25 6 16 38 46 78 82 66 59 45 42 43 28 20 22 17 11 20 17 30  
POP 12HR 5 50 20 0 0  
QPF 12HR 0 0.06 0.01 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C C C S S  
TSTMS S S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 65 41 58 34 51 32 52 32 49  
TEMP 57 62 44 42 56 55 37 34 48 48 35 32 48 48 33 32 47 44  
DEWPT 38 40 34 37 42 38 27 29 36 33 25 25 31 31 24 25 33 30  
PWIND DIR S S S S SW SW SW S SW  
WIND CHAR LT GN GN GN GN LT GN LT GN  
AVG CLOUDS SC SC BK OV OV BK SC SC SC SC SC SC SC SC SC SC BK BK  
POP 12HR 5 30 50 30 30 30 40 20 40  
RAIN C C C C S S C S C C C S S S C  
SNOW C C S S  
 

 
 
WYZ012-271130-  
FREDS MOUNTAIN-TETON WY  
43.79N 110.93W ELEV. 9840 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 45 25 45 30  
TEMP 40 40 33 30 32 31 34 42 45 37 28 25 28 28 33 40 45 40 32 30 34 33  
DEWPT 34 33 27 24 23 22 25 29 29 26 23 20 19 19 22 21 23 23 22 21 23 24  
RH 79 76 78 78 69 69 69 60 53 64 81 81 68 68 63 46 41 50 66 69 64 69  
WIND DIR W W SW SW S SW SW W W W W W W W SW W W W SW S S SE  
WIND SPD 10 11 8 9 9 8 11 14 14 14 12 10 10 8 8 10 10 10 6 8 8 6  
WIND GUST 21 16  
CLOUDS BK SC FW FW FW SC SC OV OV BK BK SC SC SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 67 38 29 20 15 41 58 87 86 74 70 42 51 44 31 14 24 16 10 24 21 33  
POP 12HR 10 70 30 0 0  
QPF 12HR 0 0.22 0.03 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS C S L L C  
SNOWSHWRS S S L C C S  
TSTMS S C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 55 37 50 29 42 24 43 25 40  
TEMP 52 48 38 41 49 39 29 31 40 35 24 26 40 34 25 30 39 32  
DEWPT 29 33 29 32 33 32 23 25 29 24 17 18 26 23 19 22 25 24  
PWIND DIR S S SW SW SW SW SW S SW  
WIND CHAR LT GN GN GN GN GN GN GN GN  
AVG CLOUDS SC SC BK OV OV BK SC BK BK BK SC SC SC SC SC SC BK BK  
POP 12HR 0 30 50 40 40 30 40 30 50  
RAIN S C C C C C  
SNOW C C C C S C C C C C C C  
 

 
 
WYZ024-271130-  
BLIND BULL SUMMIT-LINCOLN WY  
42.97N 110.62W ELEV. 9000 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 48 27 48 31  
TEMP 43 41 35 32 32 30 37 45 48 44 33 28 28 27 33 41 48 45 36 31 32 32  
DEWPT 34 33 30 28 27 25 31 36 37 31 27 24 22 22 25 27 31 29 26 23 24 24  
RH 70 73 82 85 81 81 79 70 65 60 78 85 78 81 72 57 51 53 67 72 72 72  
WIND DIR W W W SW SW SW SW W W W W W W W W W W W W SW SW S  
WIND SPD 11 12 11 10 10 9 9 13 18 14 13 14 12 12 11 12 13 16 8 8 8 6  
WIND GUST 25 21 21 18 20 21 24  
CLOUDS SC SC FW CL FW SC SC BK BK SC SC SC SC SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 57 36 24 6 22 36 34 77 77 60 50 44 37 44 37 17 23 15 2 14 22 33  
POP 12HR 5 60 20 0 0  
QPF 12HR 0 0.07 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C L L S  
TSTMS S S S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 37 52 30 48 27 48 27 45  
TEMP 55 54 37 38 51 44 30 30 46 40 28 27 45 41 27 27 43 37  
DEWPT 36 37 28 31 38 36 25 25 32 27 20 20 29 28 20 19 31 27  
PWIND DIR SW S SW W W W W SW SW  
WIND CHAR LT GN GN GN GN GN GN GN GN  
AVG CLOUDS SC SC BK BK OV BK SC SC SC SC SC SC SC SC SC SC BK BK  
POP 12HR 5 30 50 30 40 40 50 30 50  
RAIN C C C C S S C S C C S C  
SNOW C S S C S C C C S C C  
 

 
 
WYZ024-271130-  
MOUNT COFFIN-LINCOLN WY  
42.64N 110.64W ELEV. 10870 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 43 25 42 29  
TEMP 40 38 32 30 31 30 35 41 42 37 28 26 27 26 31 35 38 42 33 32 30 30  
DEWPT 32 31 26 24 24 22 25 29 29 26 22 20 20 22 24 23 25 26 23 22 21 21  
RH 73 76 78 78 75 72 66 62 60 64 78 78 74 85 75 61 59 53 66 66 69 69  
WIND DIR W W W W W W W W W W W W W W W W W W W W W SW  
WIND SPD 28 27 19 19 18 18 18 27 32 28 25 27 25 18 18 17 17 17 14 14 12 12  
WIND GUST 40 37 27 27 25 25 25 37 44 40 35 37 35 33 29 27 27 26  
CLOUDS SC SC FW CL FW FW FW BK BK SC SC SC FW SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 55 31 17 8 27 26 28 71 72 55 38 32 30 41 35 16 15 13 3 14 21 38  
POP 12HR 5 50 10 0 0  
QPF 12HR 0 0.08 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C  
SNOWSHWRS C C C  
TSTMS S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 54 37 48 29 41 26 41 27 38  
TEMP 50 53 41 38 47 45 33 30 41 39 29 26 39 40 29 27 38 33  
DEWPT 30 35 29 30 36 34 25 25 28 25 20 20 23 24 21 20 27 24  
PWIND DIR SW SW W W NW NW W W W  
WIND CHAR GN BZ GN BZ BZ BZ BZ BZ BZ  
AVG CLOUDS SC SC BK BK OV BK SC SC SC SC BK BK SC SC SC SC BK BK  
POP 12HR 5 20 50 30 40 40 50 30 50  
RAIN S C C C S  
SNOW C S S C S C C C C S C C  
 

 
 
WYZ024-271130-  
COMMISSARY RIDGE-LINCOLN WY  
42.57N 110.73W ELEV. 9340 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 31 52 29 51 32  
TEMP 43 42 36 33 34 32 39 52 52 45 34 31 31 30 35 47 51 48 36 35 34 33  
DEWPT 34 33 28 25 24 23 27 28 28 27 26 23 21 23 24 24 24 25 26 25 24 23  
RH 70 70 72 72 66 69 62 39 39 49 72 72 66 75 64 40 34 40 67 66 66 66  
WIND DIR W W W W W SW SW W W W W W W W NW W W W W W SW S  
WIND SPD 23 20 13 13 13 13 13 21 26 21 18 21 19 16 14 14 16 14 11 10 10 9  
WIND GUST 32 28 31 36 31 26 29 27 27 24 24 25 23  
CLOUDS SC FW FW CL FW FW SC BK BK SC SC SC FW SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 54 30 16 8 29 26 31 70 75 60 38 35 28 41 37 16 17 15 3 13 22 37  
POP 12HR 5 50 10 0 0  
QPF 12HR 0 0.11 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C C C  
TSTMS S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 62 39 56 32 52 29 52 29 49  
TEMP 59 56 42 39 55 49 36 32 50 44 32 29 50 45 32 29 48 41  
DEWPT 28 34 28 29 31 34 27 24 30 28 21 19 27 26 21 18 28 26  
PWIND DIR SW S W W NW NW W W W  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS SC SC BK OV OV BK SC SC SC BK BK BK SC SC SC SC BK BK  
POP 12HR 5 20 50 30 40 40 50 30 50  
RAIN S C C C S S C S C C C C  
SNOW S S C C C S C C  
 

 
 
WYZ024-271130-  
SPRING CREEK DIVIDE SNOTEL-LINCOLN WY  
42.53N 110.66W ELEV. 9000 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 53 29 51 32  
TEMP 44 43 37 34 35 34 42 53 52 46 35 32 32 29 36 47 50 50 35 33 33 33  
DEWPT 35 34 29 27 26 25 29 30 30 29 27 24 23 22 24 26 26 27 25 24 24 23  
RH 70 70 72 75 69 69 60 41 43 51 72 72 69 75 61 43 39 41 66 69 69 66  
WIND DIR W W W W W SW SW W W W W W W W NW W W W W W W SW  
WIND SPD 20 18 12 11 11 11 12 21 25 21 17 18 17 13 14 16 17 14 10 10 9 8  
WIND GUST 29 27 31 34 31 24 26 24 29 24 25 27 23  
CLOUDS SC SC FW CL FW FW FW BK BK SC SC SC FW SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 52 32 16 8 28 25 27 67 70 54 34 31 27 38 35 16 16 15 4 14 23 41  
POP 12HR 5 50 10 0 0  
QPF 12HR 0 0.06 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C C C  
TSTMS S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 62 40 56 33 50 29 50 30 48  
TEMP 58 58 41 40 56 50 33 33 50 44 30 29 49 45 30 30 47 41  
DEWPT 29 34 29 30 33 34 25 24 30 28 20 20 27 26 20 20 29 26  
PWIND DIR SW SW W W W NW W W W  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS SC SC BK BK BK BK SC SC SC BK BK BK SC SC SC SC BK BK  
POP 12HR 5 20 50 30 40 30 40 30 40  
RAIN S C C C S S C S C S S C C  
SNOW S S C C C S C C  
 

 
 
WYZ015-271130-  
LAVA MOUNTAIN-FREMONT WY  
43.66N 110.02W ELEV. 10430 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 41 25 39 29  
TEMP 38 37 32 30 28 28 33 38 40 41 30 28 25 25 29 35 38 38 33 31 30 30  
DEWPT 32 31 28 27 25 25 29 31 32 33 26 25 21 21 21 23 24 24 23 23 23 24  
RH 79 79 85 88 88 88 85 76 73 73 85 88 84 84 72 61 57 57 66 72 75 78  
WIND DIR W W W W SW W W W W W W W W W W W W W W W W SW  
WIND SPD 16 14 11 10 10 10 12 19 19 18 16 14 13 13 13 14 16 13 9 9 9 9  
WIND GUST 27 26 25 21 21 21 24 25 20  
CLOUDS BK SC SC FW FW SC SC OV OV BK BK SC SC SC FW FW FW FW CL FW FW SC  
CLOUDS(%) 70 44 37 21 19 36 45 86 87 76 75 55 49 41 27 14 15 12 5 17 17 33  
POP 12HR 10 70 40 0 0  
QPF 12HR 0 0.19 0.06 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS C  
SNOWSHWRS C S L L C C S  
TSTMS C C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 35 44 30 40 26 39 25 37  
TEMP 48 50 38 36 44 42 32 30 39 38 30 26 38 37 27 26 36 33  
DEWPT 28 30 29 32 35 33 27 27 27 25 23 22 23 22 20 20 25 23  
PWIND DIR SW SW SW SW SW W SW W SW  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS SC SC BK BK BK BK SC SC SC SC BK BK SC SC SC SC BK BK  
POP 12HR 0 20 50 30 40 40 50 30 50  
RAIN S C C C C  
SNOW C C C C C C C C C C S C C  
 

 
 
WYZ015-271130-  
TOGWOTEE MOUNTAIN LODGE-TETON WY  
43.83N 110.19W ELEV. 8710 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 50 28 48 29  
TEMP 42 41 35 32 32 30 38 49 50 44 33 30 30 28 34 43 47 47 36 32 30 30  
DEWPT 34 34 30 29 29 27 32 36 38 35 29 28 28 24 27 28 28 28 26 24 24 26  
RH 73 76 82 88 88 88 79 61 63 70 85 92 92 85 75 55 47 47 67 72 78 85  
WIND DIR W W SW S S SW SW SW W W W W W W W W W W W S S S  
WIND SPD 9 8 5 5 5 5 5 11 11 10 8 6 6 5 8 11 12 10 4 3 3 3  
WIND GUST 16 18 20  
CLOUDS BK SC SC FW FW SC SC OV OV OV BK SC SC SC SC FW FW FW CL FW FW SC  
CLOUDS(%) 70 45 38 18 16 39 54 90 92 81 79 60 56 52 34 23 20 17 8 19 18 32  
POP 12HR 10 70 50 0 0  
QPF 12HR 0 0.17 0.06 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS C S L L C C C  
SNOWSHWRS S S C S  
TSTMS S C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 37 53 33 45 28 45 28 44  
TEMP 54 56 39 38 53 49 36 33 43 42 30 28 43 41 29 28 42 38  
DEWPT 34 38 32 35 38 36 29 30 34 30 23 24 30 29 22 23 31 28  
PWIND DIR SW S SW SW SW SW SW SW SW  
WIND CHAR LT LT GN LT LT LT LT LT LT  
AVG CLOUDS SC SC BK BK BK BK SC SC SC SC SC BK SC SC SC SC BK BK  
POP 12HR 0 30 50 40 40 40 50 30 60  
RAIN C C C C C C C C C C C S L  
SNOW C C C C C C S C L  
 

 
 
WYZ015-271130-  
BROOKS LAKE LODGE-FREMONT WY  
43.73N 110.01W ELEV. 9340 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 46 27 45 30  
TEMP 40 39 34 31 31 30 37 44 46 42 31 28 28 27 31 39 44 43 35 31 30 31  
DEWPT 31 31 28 27 27 25 29 29 31 31 26 25 24 22 22 22 22 23 26 24 25 25  
RH 70 73 78 85 85 81 72 55 55 65 81 88 85 81 69 50 41 45 69 75 81 78  
WIND DIR W W W W SW W W W W W W W W W W W W W W W W SW  
WIND SPD 11 10 6 6 5 8 9 14 13 13 10 10 9 10 12 13 13 12 5 5 5 5  
WIND GUST 20 20 21 21 19  
CLOUDS BK SC SC FW FW SC SC OV OV BK BK SC SC SC FW FW FW FW CL FW FW SC  
CLOUDS(%) 71 44 39 23 19 38 48 90 90 75 78 58 51 43 30 18 17 14 5 18 17 34  
POP 12HR 10 70 50 5 0  
QPF 12HR 0 0.19 0.06 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS C L L C C  
SNOWSHWRS C S S C C C S  
TSTMS C C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 57 37 51 32 46 27 45 27 43  
TEMP 53 53 39 38 50 46 33 32 43 41 30 27 42 41 27 27 41 37  
DEWPT 29 33 32 34 33 31 28 28 28 25 22 22 24 24 20 20 25 24  
PWIND DIR SW SW SW SW SW W SW W SW  
WIND CHAR LT GN GN GN GN GN GN LT GN  
AVG CLOUDS SC SC BK BK BK BK SC SC SC SC BK BK SC SC SC SC BK BK  
POP 12HR 0 20 50 30 40 40 50 30 50  
RAIN S C C C C C C C  
SNOW C C C C C C C C S C C  
 

 
 
IDZ064-271130-  
PINE CREEK PASS SNOTEL-TETON ID  
43.57N 111.21W ELEV. 6720 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 36 56 33 57 36  
TEMP 53 52 44 40 39 38 47 54 51 49 44 41 38 36 43 50 54 54 45 42 39 38  
DEWPT 38 36 33 30 29 28 33 34 35 33 32 29 30 30 33 32 31 31 31 31 30 30  
RH 57 54 65 67 67 67 58 46 54 54 62 62 73 79 67 50 41 41 58 65 70 73  
WIND DIR W SW S S S S S SW W W SW SW S SW SW SW W W S SE SE SE  
WIND SPD 12 11 5 5 5 8 8 18 20 16 14 9 9 6 6 9 11 6 2 4 5 9  
WIND GUST 20 18 12 27 32 24 23  
CLOUDS SC SC CL CL CL SC SC OV OV BK SC SC SC SC SC FW FW FW FW FW FW FW  
CLOUDS(%) 41 40 5 3 10 48 60 82 87 75 55 39 41 39 33 27 15 12 22 23 25 15  
POP 12HR 10 60 20 0 0  
QPF 12HR 0 0.04 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS C L L S  
TSTMS C C C  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 64 44 57 38 53 33 54 35 52  
TEMP 58 60 49 46 55 53 43 40 50 50 39 35 50 49 40 37 49 47  
DEWPT 37 38 37 37 43 39 34 33 34 32 27 26 31 30 30 29 32 31  
PWIND DIR S S S S SW S SW S S  
WIND CHAR GN GN GN GN GN LT GN GN GN  
AVG CLOUDS FW SC OV OV OV OV OV OV BK OV BK SC SC BK BK BK BK OV  
POP 12HR 5 30 50 40 20 20 30 20 50  
RAIN SHWRS C C C C C S S S S C S S C  
SNOWSHWRS S  
TSTMS S S C C S S S S  
 

 
 
IDZ062-271130-  
SHEEP MOUNTAIN SNOTEL-BINGHAM ID  
43.21N 111.69W ELEV. 6570 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 39 57 35 58 36  
TEMP 55 54 47 43 42 40 48 55 54 51 45 42 41 39 43 51 56 55 47 42 40 38  
DEWPT 39 37 35 32 31 31 35 37 35 33 33 33 31 31 33 35 34 33 33 33 32 31  
RH 55 52 63 65 65 70 60 51 48 50 62 70 67 73 67 54 43 43 58 70 73 76  
WIND DIR W W SW S S S S W W W W SW SW SW W W W W S SE SE SE  
WIND SPD 19 17 10 10 10 10 11 25 28 26 24 13 13 10 14 16 14 11 6 10 10 13  
WIND GUST 29 26 37 44 40 34 21 21 23 24 23 21  
CLOUDS FW FW CL CL FW SC SC BK OV SC SC SC SC SC SC FW FW CL CL FW FW FW  
CLOUDS(%) 19 22 0 3 14 44 54 79 84 43 33 34 37 38 32 21 12 8 7 15 24 15  
POP 12HR 5 40 5 0 0  
QPF 12HR 0 0.01 0 0 0  
SNOW 12HR 00-00 00-00 00-00 00-00 00-00  
RAIN SHWRS S C C  
TSTMS S S S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 65 46 59 40 54 35 56 36 53  
TEMP 58 61 50 46 54 54 44 41 51 50 40 37 51 51 41 38 49 47  
DEWPT 36 39 38 37 43 41 35 33 34 30 28 28 34 33 31 30 32 30  
PWIND DIR S S S S SW SW SW S SW  
WIND CHAR GN GN GN GN GN GN GN GN GN  
AVG CLOUDS FW SC BK BK BK OV OV OV BK SC SC SC SC SC SC SC BK OV  
POP 12HR 0 20 50 30 20 20 20 20 40  
RAIN SHWRS S C C C S S S S S S S C  
SNOWSHWRS S  
TSTMS S S C C S S S  
 

 
 
WYZ001-271130-  
SYLVAN PASS - PARK WY  
44.47N 110.16W ELEV. 8420 FT  
217 PM MDT SUN APR 26 2020  
 
DATE 04/26/20 MON 04/27/20 TUE 04/28/20 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 52 27 51 29  
TEMP 37 37 36 33 31 30 37 51 52 42 34 30 28 27 32 43 51 44 36 30 30 30  
DEWPT 33 32 29 29 28 28 30 35 36 31 28 26 25 22 22 24 25 27 26 24 25 25  
RH 85 82 75 85 88 92 75 54 54 65 78 85 88 81 66 47 36 51 67 78 81 81  
WIND DIR W W SW SW SW SW SW W W W W W W W W W W W SW SW SW SW  
WIND SPD 25 21 13 11 14 12 14 24 19 21 16 13 14 13 12 16 14 14 10 9 9 8  
WIND GUST 34 31 33 27 31 21 26 20 25 24 23  
CLOUDS SC SC SC FW FW SC SC OV OV OV BK BK SC SC SC FW FW FW FW FW FW SC  
CLOUDS(%) 59 35 43 30 23 41 59 92 92 81 73 61 56 55 33 15 27 23 19 28 30 39  
POP 12HR 10 70 50 0 0  
QPF 12HR 0 0.23 0.07 0 0  
SNOW 12HR 00-00 00-00 T 00-00 00-00  
RAIN SHWRS C L L C C  
SNOWSHWRS C S C C C C S  
TSTMS S C S  
 
DATE 04/29/20 THU 04/30/20 FRI 05/01/20 SAT 05/02/20 SUN 05/03/20  
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 61 36 57 32 46 27 46 27 45  
TEMP 57 51 37 37 56 46 32 32 45 38 27 27 43 38 27 28 43 37  
DEWPT 32 34 30 33 42 37 29 29 33 26 21 22 28 25 20 22 28 27  
PWIND DIR SW SW SW SW SW SW SW SW SW  
WIND CHAR GN GN BZ GN BZ GN GN GN GN  
AVG CLOUDS SC SC BK BK BK BK SC SC BK BK BK BK SC SC SC SC BK BK  
POP 12HR 0 20 50 40 50 30 50 30 50  
RAIN S C C C C C C C C C C  
SNOW C C C C C C C C S C C  
 

 
 
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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