Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of MONDAY: JANUARY 28 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.1 10.6 86 11.1 13.6 82 Black Bear 8170 18.1 23.0 79 19.7 24.2 81 Blind Bull Sum 8650 11.0 13.3 83 9.2 12.5 74 Cottonwood Creek 7670 11.9 12.1 98 14.6 15.3 95 East Rim Divide 7930 5.4 6.7 81 5.8 7.5 77 Grand Targhee 9260 26.2 23.2 113 20.7 20.2 102 Granite Creek 6770 8.8 9.9 89 10.8 13.2 82 Grassy Lake 7265 15.7 19.2 82 19.4 23.2 84 Gros Ventre Summit 8750 4.7 8.1 58 5.7 8.0 71 Gunsight Pass 9820 6.6 8.0 82 8.9 8.6 103 Lewis Lake Divide 7850 14.2 19.0 75 18.4 22.5 82 Phillips Bench 8200 12.2 15.9 77 15.5 17.6 88 Salt River Summit 7640 6.5 7.4 88 8.8 10.3 85 Snake River Station 6920 9.5 10.1 94 14.2 15.0 95 Spring Creek Divide 9000 12.4 13.7 91 14.0 14.9 94 Thumb Divide 7980 6.7 9.3 72 8.8 11.9 74 Togwotee Pass 9580 13.4 14.5 92 14.3 15.4 93 Two Ocean Plateau 9240 15.5 16.5 94 13.3 16.8 79 Willow Creek 8080 14.6 16.7 87 19.0 21.0 90 Younts Peak 8350 -M 9.1 * -M 10.2 * ----- ----- Basin Index (%) 87 86 MADISON-GALLATIN Black Bear 8170 18.1 23.0 79 19.7 24.2 81 Canyon 7870 6.7 7.9 85 8.3 10.4 80 Madison Plateau 7750 -M 13.9 * -M 16.9 * West Yellowstone 6700 5.9 6.9 86 7.6 9.4 81 Whiskey Creek 6800 6.9 9.5 73 7.8 12.9 60 ----- ----- Basin Index (%) 79 76 YELLOWSTONE Beartooth Lake 9360 9.8 13.4 73 8.8 12.5 70 Burnt Mtn 5880 5.2 2.4 217 8.7 7.7 113 Canyon 7870 6.7 7.9 85 8.3 10.4 80 Cole Creek 7850 11.2 8.0 140 8.7 7.4 118 Evening Star 9200 14.7 15.5 95 17.6 17.5 101 Fisher Creek 9100 14.6 20.1 73 18.5 20.2 92 Northeast Entrance 7350 5.9 6.1 97 8.4 8.0 105 Parker Peak 9400 13.5 12.4 109 14.2 11.1 128 Sylvan Lake 8420 12.2 12.6 97 17.3 14.4 120 Thumb Divide 7980 6.7 9.3 72 8.8 11.9 74 Two Ocean Plateau 9240 15.5 16.5 94 13.3 16.8 79 White Mill 8700 11.1 14.0 79 9.9 15.0 66 Wolverine 7650 6.7 6.7 100 7.6 8.0 95 Younts Peak 8350 -M 9.1 * -M 10.2 * ----- ----- Basin Index (%) 92 93 WIND RIVER Burroughs Creek 8750 4.4 -M * 6.1 -M * Castle Creek 8400 2.0 -M * 3.3 -M * Cold Springs 9630 4.0 4.3 93 4.3 6.1 70 Deer Park 9700 8.0 8.8 91 8.5 11.9 71 Hobbs Park 10100 7.0 7.9 89 5.7 7.6 75 Kirwin 9550 4.8 5.6 86 5.1 7.1 72 Little Warm 9370 4.4 6.1 72 5.3 7.9 67 Owl Creek 8975 3.7 3.1 119 4.3 3.4 126 South Pass 9040 6.8 8.3 82 6.5 10.6 61 St. Lawrence Alt 8620 2.6 4.1 63 4.9 5.2 94 Togwotee Pass 9580 13.4 14.5 92 14.3 15.4 93 Townsend Creek 8700 5.3 5.0 106 6.1 6.9 88 ----- ----- Basin Index (%) 89 79 BIGHORN BASIN Bald Mtn. 9380 11.6 10.6 109 7.3 10.4 70 Bear Trap Meadow 8200 5.5 3.3 167 4.8 5.1 94 Bone Springs Div 9350 8.3 9.6 86 6.9 9.3 74 Grave Springs 8550 4.9 4.9 100 5.7 6.3 90 Kirwin 9550 4.8 5.6 86 5.1 7.1 72 Marquette 8760 5.5 -M * 6.6 -M * Middle Powder 7760 6.6 6.2 106 4.1 7.2 57 Owl Creek 8975 3.7 3.1 119 4.3 3.4 126 Powder River Pass 9480 6.3 6.1 103 5.7 7.7 74 Shell Creek 9580 -M 8.9 * -M 8.6 * Timber Creek 7950 2.8 3.0 93 4.5 4.4 102 ----- ----- Basin Index (%) 104 79 SHOSHONE RIVER Blackwater 9780 13.2 14.2 93 14.2 12.9 110 Evening Star 9200 14.7 15.5 95 17.6 17.5 101 Marquette 8760 5.5 -M * 6.6 -M * Sylvan Lake 8420 12.2 12.6 97 17.3 14.4 120 Sylvan Road 7120 7.2 7.6 95 10.2 11.6 88 Younts Peak 8350 -M 9.1 * -M 10.2 * ----- ----- Basin Index (%) 95 105 POWDER RIVER Bear Trap Meadow 8200 5.5 3.3 167 4.8 5.1 94 Cloud Peak Reservoir 9860 8.1 8.0 101 7.1 7.7 92 Grave Springs 8550 4.9 4.9 100 5.7 6.3 90 Hansen Sawmill 8360 3.5 4.0 88 5.0 4.9 102 Middle Powder 7760 6.6 6.2 106 4.1 7.2 57 Powder River Pass 9480 6.3 6.1 103 5.7 7.7 74 Soldier Park 8720 2.9 -M * 4.9 -M * ----- ----- Basin Index (%) 107 83 TONGUE RIVER Big Goose 7990 5.3 4.7 113 7.1 6.4 111 Bone Springs Div 9350 8.3 9.6 86 6.9 9.3 74 Burgess Junction 7880 5.8 6.5 89 6.0 7.2 83 Dome Lake 8880 4.8 6.6 73 5.1 8.1 63 Little Goose 8870 6.4 -M * 5.6 -M * Sucker Creek 8880 7.6 7.0 109 6.9 8.4 82 Tie Creek 6870 3.1 3.2 97 7.3 6.9 106 ----- ----- Basin Index (%) 93 85 BELLE FOURCHE Blind Park 6890 5.2 4.4 118 5.0 7.5 67 Cole Canyon 5910 5.0 3.1 161 8.0 5.6 143 ----- ----- Basin Index (%) 136 99 CHEYENNE RIVER BASIN Blind Park 6890 5.2 4.4 118 5.0 7.5 67 North Rapid Creek 6130 4.7 4.1 115 4.8 6.1 79 ----- ----- Basin Index (%) 116 72 UPPER N. PLATTE Arapaho Ridge 10960 14.4 12.7 113 15.5 13.7 113 Blackhall Mtn 9820 17.8 -M * 20.3 -M * Columbine 9160 16.3 14.2 115 17.6 15.8 111 Divide Peak 8880 12.1 11.8 103 14.9 13.2 113 Joe Wright 10120 13.0 12.6 103 19.6 15.5 126 Laprele Creek 8375 8.1 5.3 153 8.8 7.3 121 Med Bow 10500 23.2 -M * 22.5 -M * Never Summer 10280 12.8 11.8 108 12.1 -M * North French Creek 10130 18.6 15.6 119 20.0 16.4 122 Old Battle 10000 20.3 18.6 109 22.2 21.7 102 Rawah 9020 6.8 6.0 113 9.7 8.9 109 Sage Creek Basin 7850 11.3 8.0 141 10.8 9.4 115 Sand Lake 10050 17.0 16.0 106 14.6 14.6 100 South Brush Creek 8440 7.1 7.1 100 8.0 9.3 86 Tower 10500 29.6 26.5 112 27.3 24.8 110 Webber Springs 9250 14.0 13.1 107 18.0 16.5 109 Whiskey Park 8950 16.2 15.2 107 20.0 17.2 116 Willow Creek Pass 9540 8.6 7.2 119 10.6 8.0 132 Zirkel 9340 16.6 17.6 94 21.1 18.1 117 ----- ----- Basin Index (%) 111 112 SWEETWATER Deer Park 9700 8.0 8.8 91 8.5 11.9 71 Larsen Creek 9000 5.0 7.0 71 8.2 -M * South Pass 9040 6.8 8.3 82 6.5 10.6 61 ----- ----- Basin Index (%) 82 67 LOWER N. PLATTE Casper Mtn. 7900 9.2 7.4 124 7.5 8.9 84 Laprele Creek 8375 8.1 5.3 153 8.8 7.3 121 Reno Hill 8400 9.6 7.6 126 10.4 8.7 120 Windy Peak 7900 6.4 4.0 160 6.2 6.2 100 ----- ----- Basin Index (%) 137 106 LARAMIE RIVER Brooklyn Lake 10240 13.7 11.9 115 15.4 12.5 123 Cinnabar Park 9574 12.7 12.9 98 15.3 15.4 99 Crow Creek 8330 2.6 5.6 46 5.9 6.4 92 Deadman Hill 10220 11.0 9.6 115 10.6 10.0 106 Rawah 9020 6.8 6.0 113 9.7 8.9 109 Roach 9700 9.0 9.8 92 11.3 11.5 98 Windy Peak 7900 6.4 4.0 160 6.2 6.2 100 ----- ----- Basin Index (%) 104 105 S. PLATTE Black Mountain 8920 5.6 -M * 6.7 -M * Crow Creek 8330 2.6 5.6 46 5.9 6.4 92 Deadman Hill 10220 11.0 9.6 115 10.6 10.0 106 ----- ----- Basin Index (%) 89 101 LITTLE SNAKE RIVER Battle Mountain 7440 8.3 6.8 122 10.3 9.4 110 Divide Peak 8880 12.1 11.8 103 14.9 13.2 113 Elk River 8700 11.3 10.6 107 11.2 12.3 91 Little Snake River 8915 15.3 14.8 103 24.1 19.9 121 Old Battle 10000 20.3 18.6 109 22.2 21.7 102 Sage Creek Basin 7850 11.3 8.0 141 10.8 9.4 115 Sandstone RS 8150 10.2 7.7 132 11.5 11.6 99 Whiskey Park 8950 16.2 15.2 107 20.0 17.2 116 ----- ----- Basin Index (%) 112 109 UPPER GREEN RIVER Big Sandy Opening 9080 6.8 7.8 87 7.7 8.1 95 Blind Bull Sum 8650 11.0 13.3 83 9.2 12.5 74 East Rim Divide 7930 5.4 6.7 81 5.8 7.5 77 Elkhart Park G.S. 9400 6.4 7.2 89 7.3 8.2 89 Gros Ventre Summit 8750 4.7 8.1 58 5.7 8.0 71 Gunsight Pass 9820 6.6 8.0 82 8.9 8.6 103 Kendall R.S. 7740 5.8 7.7 75 6.6 8.9 74 Loomis Park 8240 7.7 9.2 84 9.1 10.9 83 New Fork Lake 8340 5.1 6.7 76 5.2 6.9 75 Pocket Creek 9360 8.3 -M * 9.3 -M * Snyder Basin 8060 6.6 7.3 90 8.5 8.9 96 Spring Creek Divide 9000 12.4 13.7 91 14.0 14.9 94 Triple Peak 8500 12.1 12.5 97 14.4 15.5 93 ----- ----- Basin Index (%) 84 86 LOWER GREEN RIVER Blacks Fork Jct 8869 5.4 -M * 8.0 -M * Buck Pasture 9632 9.1 -M * 12.0 -M * EF Blacks Fork GS 9360 6.8 -M * 6.9 -M * Hams Fork 7840 5.9 6.9 86 6.9 7.1 97 Hewinta 9500 6.0 5.3 113 9.0 8.3 108 Hickerson Park 9122 4.5 3.6 125 7.0 6.0 117 Hole-in-Rock 9168 3.5 3.8 92 6.5 5.6 116 Indian Creek 9425 11.6 14.1 82 9.9 13.6 73 Kelley R.S. 8180 7.8 8.7 90 8.8 11.2 79 Spirit Lk 10235 8.3 -M * 7.7 -M * Steel Creek Park 10158 9.1 8.4 108 11.1 9.6 116 ----- ----- Basin Index (%) 95 96 UPPER BEAR RIVER Bear River RS 8777 5.6 -M * 8.7 -M * Bug Lake 7987 10.0 9.9 101 13.1 12.1 108 Burts Miller Ranch 8000 3.5 -M * 5.2 -M * Chalk Creek #1 9171 11.8 13.1 90 16.4 15.2 108 Hayden Fork 9130 8.9 8.3 107 13.7 12.6 109 Kelley R.S. 8180 7.8 8.7 90 8.8 11.2 79 Lily Lake 9133 7.3 7.2 101 9.8 10.4 94 Monte Cristo 8932 14.1 15.3 92 15.7 15.8 99 Salt River Summit 7640 6.5 7.4 88 8.8 10.3 85 ----- ----- Basin Index (%) 95 99 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.