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 SATURDAY: JANUARY 13 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 10.6 9.1 116 12.4 11.8 105 Black Bear 8170 -M 20.2 * -M 20.9 * Blind Bull Sum 8650 17.3 11.8 147 10.8 10.9 99 Cottonwood Creek 7670 11.6 9.8 118 13.5 13.5 100 East Rim Divide 7930 6.0 5.3 113 6.6 6.5 102 Grand Targhee 9260 28.4 20.9 136 17.0 17.8 96 Granite Creek 6770 9.3 8.0 116 12.2 11.4 107 Grassy Lake 7265 14.3 15.9 90 18.5 20.0 92 Gros Ventre Summit 8750 9.3 7.3 127 8.8 7.0 126 Gunsight Pass 9820 9.0 7.2 125 9.4 7.6 124 Lewis Lake Divide 7850 17.5 15.9 110 19.8 19.6 101 Phillips Bench 8200 13.1 13.9 94 14.4 15.4 94 Salt River Summit 7640 5.0 5.9 85 7.1 9.0 79 Snake River Station 6920 9.1 8.5 107 13.5 13.0 104 Spring Creek Divide 9000 13.2 11.4 116 13.2 13.1 101 Thumb Divide 7980 10.3 7.7 134 11.4 10.4 110 Togwotee Pass 9580 18.1 12.7 143 18.4 13.6 135 Two Ocean Plateau 9240 22.6 15.2 149 16.6 14.8 112 Willow Creek 8080 16.8 13.4 125 19.4 18.3 106 Younts Peak 8350 -M 8.0 * -M 9.0 * ----- ----- Basin Index (%) 121 104 MADISON-GALLATIN Black Bear 8170 -M 20.2 * -M 20.9 * Canyon 7870 9.0 6.9 130 10.8 9.1 119 Madison Plateau 7750 12.8 11.6 110 14.1 14.7 96 West Yellowstone 6700 -M 6.0 * -M 8.2 * Whiskey Creek 6800 7.6 8.1 94 9.7 11.4 85 ----- ----- Basin Index (%) 111 98 YELLOWSTONE Beartooth Lake 9360 21.4 11.9 180 19.7 10.8 182 Burnt Mtn 5880 3.0 2.0 150 8.5 7.2 118 Canyon 7870 9.0 6.9 130 10.8 9.1 119 Cole Creek 7850 8.3 6.9 120 5.8 6.9 84 Evening Star 9200 22.7 13.6 167 24.2 15.4 157 Fisher Creek 9100 29.1 17.5 166 24.7 17.6 140 Northeast Entrance 7350 6.3 5.1 124 9.7 7.1 137 Parker Peak 9400 19.5 11.3 173 -M 9.8 * Sylvan Lake 8420 14.1 11.0 128 15.2 12.8 119 Thumb Divide 7980 10.3 7.7 134 11.4 10.4 110 Two Ocean Plateau 9240 22.6 15.2 149 16.6 14.8 112 White Mill 8700 22.0 12.1 182 16.3 13.1 124 Wolverine 7650 9.7 5.7 170 12.3 7.1 173 ----- ----- Basin Index (%) 156 132 WIND RIVER Burroughs Creek 8750 9.1 -M * 10.7 -M * Castle Creek 8400 5.1 -M * 6.5 -M * Cold Springs 9630 5.6 3.8 147 6.0 5.5 109 Deer Park 9700 7.2 7.1 101 8.7 10.7 81 Hobbs Park 10100 10.4 7.2 144 8.7 6.8 128 Kirwin 9550 11.9 5.1 233 10.6 6.4 166 Little Warm 9370 9.9 5.4 183 10.0 7.0 143 Owl Creek 8975 2.6 2.9 90 4.2 3.2 131 South Pass 9040 6.9 7.4 93 5.0 9.5 53 St. Lawrence Alt 8620 2.3 3.4 68 5.6 4.7 119 Togwotee Pass 9580 18.1 12.7 143 18.4 13.6 135 Townsend Creek 8700 4.3 4.3 100 5.6 6.3 89 ----- ----- Basin Index (%) 134 112 BIGHORN BASIN Bald Mtn. 9380 11.4 9.7 118 7.7 9.2 84 Bear Trap Meadow 8200 4.2 2.8 150 5.2 4.6 113 Bone Springs Div 9350 9.5 8.3 114 7.3 8.2 89 Grave Springs 8550 3.2 4.2 76 2.9 5.7 51 Kirwin 9550 11.9 5.1 233 10.6 6.4 166 Marquette 8760 3.6 -M * 6.7 -M * Middle Powder 7760 4.4 5.8 76 3.3 6.6 50 Owl Creek 8975 2.6 2.9 90 4.2 3.2 131 Powder River Pass 9480 8.5 5.7 149 7.2 6.8 106 Shell Creek 9580 11.5 7.9 146 8.0 7.5 107 Timber Creek 7950 2.2 2.4 92 1.7 4.1 41 ----- ----- Basin Index (%) 127 93 SHOSHONE RIVER Blackwater 9780 20.8 12.5 166 18.4 11.4 161 Evening Star 9200 22.7 13.6 167 24.2 15.4 157 Marquette 8760 3.6 -M * 6.7 -M * Sylvan Road 7120 7.6 6.3 121 12.2 10.4 117 Younts Peak 8350 -M 8.0 * -M 9.0 * ----- ----- Basin Index (%) 158 147 POWDER RIVER Bear Trap Meadow 8200 4.2 2.8 150 5.2 4.6 113 Cloud Peak Reservoir 9860 7.8 7.0 111 7.5 7.0 107 Grave Springs 8550 3.2 4.2 76 2.9 5.7 51 Hansen Sawmill 8360 3.7 3.4 109 5.0 4.4 114 Middle Powder 7760 4.4 5.8 76 3.3 6.6 50 Powder River Pass 9480 8.5 5.7 149 7.2 6.8 106 Soldier Park 8720 2.7 -M * 5.4 -M * ----- ----- Basin Index (%) 110 89 TONGUE RIVER Big Goose 7990 3.5 4.2 83 4.0 5.7 70 Bone Springs Div 9350 9.5 8.3 114 7.3 8.2 89 Burgess Junction 7880 4.3 5.4 80 4.1 6.5 63 Dome Lake 8880 6.0 5.9 102 5.4 7.4 73 Little Goose 8870 4.3 -M * 6.3 -M * Sucker Creek 8880 4.9 6.1 80 -M 7.5 * Tie Creek 6870 1.7 2.4 71 4.8 6.2 77 ----- ----- Basin Index (%) 93 75 BELLE FOURCHE Cole Canyon 5910 2.5 2.5 100 4.3 5.1 84 ----- ----- Basin Index (%) 100 84 CHEYENNE RIVER BASIN Blind Park 6890 3.3 3.9 85 5.3 6.8 78 North Rapid Creek 6130 3.6 3.6 100 3.8 5.6 68 ----- ----- Basin Index (%) 92 73 UPPER N. PLATTE Arapaho Ridge 10960 10.3 10.9 94 10.2 12.7 80 Blackhall Mtn 9820 13.8 -M * 14.2 -M * Columbine 9160 6.0 11.9 50 12.7 13.7 93 Divide Peak 8880 7.3 10.0 73 10.8 11.7 92 Joe Wright 10120 9.0 10.8 83 15.8 13.8 114 Laprele Creek 8375 3.3 4.7 70 4.6 6.6 70 Med Bow 10500 21.8 -M * 18.7 -M * North French Creek 10130 15.3 13.5 113 15.8 14.2 111 Never Summer 10280 9.3 10.4 89 8.0 -M * Old Battle 10000 12.7 15.2 84 12.3 19.0 65 Rawah 9020 5.9 5.3 111 8.9 8.4 106 Sage Creek Basin 7850 4.9 7.0 70 6.5 8.6 76 Sand Lake 10050 14.6 14.0 104 12.2 12.9 95 South Brush Creek 8440 5.7 5.9 97 7.1 8.2 87 Tower 10500 16.0 21.6 74 17.3 21.5 80 Webber Springs 9250 9.0 11.6 78 11.1 14.4 77 Willow Creek Pass 9540 7.1 6.1 116 7.7 7.3 105 Zirkel 9340 10.6 15.0 71 15.6 16.5 95 ----- ----- Basin Index (%) 85 89 SWEETWATER Deer Park 9700 7.2 7.1 101 8.7 10.7 81 Larsen Creek 9000 4.5 5.8 78 7.1 -M * South Pass 9040 6.9 7.4 93 5.0 9.5 53 ----- ----- Basin Index (%) 92 68 LOWER N. PLATTE Casper Mtn. 7900 4.3 6.7 64 3.8 8.0 48 Laprele Creek 8375 3.3 4.7 70 4.6 6.6 70 Reno Hill 8400 5.5 6.5 85 6.5 7.9 82 Windy Peak 7900 2.8 3.4 82 4.3 5.7 75 ----- ----- Basin Index (%) 75 68 LARAMIE RIVER Brooklyn Lake 10240 12.8 10.2 125 13.6 10.7 127 Cinnabar Park 9574 13.0 11.4 114 15.6 14.0 111 Crow Creek 8330 1.4 4.9 29 6.5 6.0 108 Deadman Hill 10220 10.6 8.0 132 10.5 8.9 118 Rawah 9020 5.9 5.3 111 8.9 8.4 106 Roach 9700 7.5 8.4 89 10.0 10.2 98 ----- ----- Basin Index (%) 106 112 S. PLATTE Black Mountain 8920 4.6 -M * 7.2 -M * Crow Creek 8330 1.4 4.9 29 6.5 6.0 108 Deadman Hill 10220 10.6 8.0 132 10.5 8.9 118 ----- ----- Basin Index (%) 93 114 LITTLE SNAKE RIVER Battle Mountain 7440 2.7 5.3 51 -M 8.2 * Divide Peak 8880 7.3 10.0 73 10.8 11.7 92 Elk River 8700 7.3 8.8 83 8.7 10.8 81 Little Snake River 8915 9.6 11.9 81 14.8 17.7 84 Old Battle 10000 12.7 15.2 84 12.3 19.0 65 Sage Creek Basin 7850 4.9 7.0 70 6.5 8.6 76 Sandstone RS 8150 4.6 6.2 74 4.3 10.1 43 Whiskey Park 8950 10.4 12.0 87 13.4 14.6 92 ----- ----- Basin Index (%) 78 77 UPPER GREEN RIVER Big Sandy Opening 9080 7.8 7.0 111 8.0 7.2 111 Blind Bull Sum 8650 17.3 11.8 147 10.8 10.9 99 East Rim Divide 7930 6.0 5.3 113 6.6 6.5 102 Elkhart Park G.S. 9400 6.9 6.2 111 6.9 7.3 95 Gros Ventre Summit 8750 9.3 7.3 127 8.8 7.0 126 Gunsight Pass 9820 9.0 7.2 125 9.4 7.6 124 Kendall R.S. 7740 8.5 6.2 137 9.3 7.8 119 Loomis Park 8240 9.1 7.4 123 9.8 9.5 103 New Fork Lake 8340 6.7 5.4 124 5.9 6.0 98 Pocket Creek 9360 6.3 -M * 5.5 -M * Snider Basin 8060 6.3 6.2 102 8.2 7.8 105 Spring Creek Divide 9000 13.2 11.4 116 13.2 13.1 101 Triple Peak 8500 13.9 10.9 128 15.8 13.4 118 ----- ----- Basin Index (%) 124 108 LOWER GREEN RIVER Blacks Fork Jct 8869 3.4 -M * 5.0 -M * Buck Pasture 9632 6.0 -M * 6.8 -M * EF Blacks Fork GS 9360 3.2 -M * 3.8 -M * Hams Fork 7840 4.5 5.5 82 5.2 6.2 84 Hewinta 9500 3.5 4.8 73 5.9 7.4 80 Hickerson Park 9122 3.2 3.2 100 2.6 5.4 48 Hole-in-Rock 9168 2.7 3.3 82 3.1 5.1 61 Indian Creek 9425 11.0 11.8 93 8.6 11.9 72 Kelley R.S. 8180 6.9 7.2 96 7.9 9.9 80 Spirit Lk 10235 3.5 -M * 4.2 -M * Steel Creek Park 10158 7.1 7.1 100 7.1 8.5 84 ----- ----- Basin Index (%) 91 74 UPPER BEAR RIVER Bear River RS 8777 4.0 -M * 5.5 -M * Bug Lake 7987 7.0 8.0 88 8.9 10.6 84 Burts Miller Ranch 8000 2.3 -M * 3.4 -M * Chalk Creek #1 9171 7.3 11.3 65 8.4 13.4 63 Hayden Fork 9130 6.3 6.8 93 8.0 11.2 71 Kelley R.S. 8180 6.9 7.2 96 7.9 9.9 80 Lily Lake 9133 5.5 6.2 89 5.9 9.2 64 Monte Cristo 8932 10.7 13.2 81 10.5 13.9 76 Salt River Summit 7640 5.0 5.9 85 7.1 9.0 79 ----- ----- Basin Index (%) 83 73 ----------------------------------------------------------------------------- -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.