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 WEDNESDAY: JANUARY 24 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.0 10.3 107 12.8 13.1 98 Black Bear 8170 25.1 22.6 111 24.2 23.4 103 Blind Bull Sum 8650 17.5 12.9 136 11.2 12.1 93 Cottonwood Creek 7670 12.5 11.6 108 14.2 14.8 96 East Rim Divide 7930 6.3 6.4 98 6.7 7.2 93 Grand Targhee 9260 30.2 22.3 135 18.0 19.1 94 Granite Creek 6770 9.3 9.3 100 12.4 12.7 98 Grassy Lake 7265 16.5 18.3 90 20.2 22.3 91 Gros Ventre Summit 8750 9.4 7.8 121 8.9 7.7 116 Gunsight Pass 9820 9.2 7.8 118 9.6 8.4 114 Lewis Lake Divide 7850 18.8 18.0 104 21.4 21.7 99 Phillips Bench 8200 13.1 15.8 83 14.9 17.0 88 Salt River Summit 7640 5.5 7.2 76 7.4 9.9 75 Snake River Station 6920 10.0 9.6 104 14.3 14.4 99 Spring Creek Divide 9000 14.2 12.9 110 14.1 14.4 98 Thumb Divide 7980 11.1 8.8 126 12.1 11.5 105 Togwotee Pass 9580 18.6 13.6 137 18.9 14.9 127 Two Ocean Plateau 9240 23.7 16.0 148 17.8 16.2 110 Willow Creek 8080 18.0 16.0 112 20.9 20.2 103 Younts Peak 8350 -M 8.8 * -M 9.9 * ----- ----- Basin Index (%) 113 100 MADISON-GALLATIN Black Bear 8170 25.1 22.6 111 24.2 23.4 103 Canyon 7870 10.5 7.7 136 12.1 10.1 120 Madison Plateau 7750 15.2 13.6 112 16.2 16.2 100 West Yellowstone 6700 7.8 6.7 116 10.6 8.9 119 Whiskey Creek 6800 9.1 9.2 99 10.9 12.5 87 ----- ----- Basin Index (%) 113 104 YELLOWSTONE Beartooth Lake 9360 23.0 13.0 177 21.1 12.0 176 Burnt Mtn 5880 3.6 2.4 150 8.9 7.6 117 Canyon 7870 10.5 7.7 136 12.1 10.1 120 Cole Creek 7850 9.3 7.7 121 6.0 7.3 82 Evening Star 9200 24.1 14.8 163 25.5 16.8 152 Fisher Creek 9100 31.0 19.6 158 26.5 19.4 137 Northeast Entrance 7350 7.0 6.0 117 10.4 7.8 133 Parker Peak 9400 20.9 12.1 173 18.1 10.7 169 Sylvan Lake 8420 15.0 12.0 125 16.4 14.0 117 Thumb Divide 7980 11.1 8.8 126 12.1 11.5 105 Two Ocean Plateau 9240 23.7 16.0 148 17.8 16.2 110 White Mill 8700 24.0 13.7 175 17.4 14.5 120 Wolverine 7650 10.8 6.5 166 13.1 7.8 168 ----- ----- Basin Index (%) 153 132 WIND RIVER Burroughs Creek 8750 9.3 -M * 11.2 -M * Castle Creek 8400 5.2 -M * 6.5 -M * Cold Springs 9630 6.0 4.2 143 6.4 5.9 108 Deer Park 9700 7.7 8.2 94 9.0 11.7 77 Hobbs Park 10100 11.0 7.7 143 9.3 7.4 126 Kirwin 9550 12.0 5.4 222 10.7 6.9 155 Little Warm 9370 10.2 5.9 173 10.3 7.7 134 Owl Creek 8975 2.7 3.0 90 4.3 3.4 126 South Pass 9040 7.1 8.2 87 5.0 10.3 49 St. Lawrence Alt 8620 2.6 3.8 68 5.9 5.1 116 Togwotee Pass 9580 18.6 13.6 137 18.9 14.9 127 Townsend Creek 8700 4.8 4.8 100 5.9 6.8 87 ----- ----- Basin Index (%) 128 107 BIGHORN BASIN Bald Mtn. 9380 11.9 10.3 116 8.0 10.1 79 Bear Trap Meadow 8200 4.8 3.2 150 5.9 4.9 120 Bone Springs Div 9350 10.0 9.4 106 7.5 9.1 82 Grave Springs 8550 4.2 4.7 89 3.6 6.1 59 Kirwin 9550 12.0 5.4 222 10.7 6.9 155 Marquette 8760 3.8 -M * 6.7 -M * Middle Powder 7760 5.4 6.0 90 3.7 7.0 53 Owl Creek 8975 2.7 3.0 90 4.3 3.4 126 Powder River Pass 9480 9.2 6.0 153 7.8 7.4 105 Shell Creek 9580 12.0 8.7 138 8.4 8.3 101 Timber Creek 7950 2.2 2.9 76 1.5 4.3 35 ----- ----- Basin Index (%) 125 91 SHOSHONE RIVER Blackwater 9780 21.9 13.4 163 19.4 12.5 155 Evening Star 9200 24.1 14.8 163 25.5 16.8 152 Marquette 8760 3.8 -M * 6.7 -M * Sylvan Road 7120 9.1 7.4 123 13.1 11.2 117 Younts Peak 8350 -M 8.8 * -M 9.9 * ----- ----- Basin Index (%) 155 143 POWDER RIVER Bear Trap Meadow 8200 4.8 3.2 150 5.9 4.9 120 Cloud Peak Reservoir 9860 8.3 7.8 106 7.9 7.5 105 Grave Springs 8550 4.2 4.7 89 3.6 6.1 59 Hansen Sawmill 8360 4.1 3.9 105 5.4 4.7 115 Middle Powder 7760 5.4 6.0 90 3.7 7.0 53 Powder River Pass 9480 9.2 6.0 153 7.8 7.4 105 Soldier Park 8720 2.8 -M * 5.6 -M * ----- ----- Basin Index (%) 114 91 TONGUE RIVER Big Goose 7990 3.8 4.5 84 4.4 6.2 71 Bone Springs Div 9350 10.0 9.4 106 7.5 9.1 82 Burgess Junction 7880 4.6 6.3 73 4.2 7.1 59 Dome Lake 8880 6.4 6.5 98 6.0 7.9 76 Little Goose 8870 4.7 -M * 6.7 -M * Sucker Creek 8880 5.2 6.7 78 -M 8.2 * Tie Creek 6870 1.9 3.1 61 5.0 6.8 74 ----- ----- Basin Index (%) 87 73 BELLE FOURCHE Cole Canyon 5910 3.5 3.0 117 5.1 5.5 93 ----- ----- Basin Index (%) 117 93 CHEYENNE RIVER BASIN Blind Park 6890 4.3 4.1 105 6.4 7.3 88 North Rapid Creek 6130 4.5 4.0 112 4.8 5.9 81 ----- ----- Basin Index (%) 109 85 UPPER N. PLATTE Arapaho Ridge 10960 11.5 11.8 97 11.4 13.3 86 Blackhall Mtn 9820 14.9 -M * 15.2 -M * Columbine 9160 5.3 13.6 39 -M 15.1 * Divide Peak 8880 8.3 11.4 73 11.6 12.9 90 Joe Wright 10120 9.7 12.3 79 16.8 15.0 112 Laprele Creek 8375 4.0 5.3 75 5.5 7.1 77 Med Bow 10500 23.3 -M * 19.8 -M * North French Creek 10130 16.6 15.0 111 16.9 15.7 108 Never Summer 10280 9.9 11.3 88 8.7 -M * Old Battle 10000 14.3 17.6 81 13.7 20.9 66 Rawah 9020 6.6 5.8 114 9.3 8.7 107 Sage Creek Basin 7850 5.8 7.6 76 7.1 9.1 78 Sand Lake 10050 15.4 15.5 99 12.8 14.1 91 South Brush Creek 8440 5.9 6.8 87 7.5 8.9 84 Tower 10500 17.2 25.3 68 17.9 23.7 76 Webber Springs 9250 10.2 12.7 80 12.6 15.9 79 Willow Creek Pass 9540 8.0 6.9 116 8.5 7.8 109 Zirkel 9340 11.5 16.8 68 16.6 17.4 95 ----- ----- Basin Index (%) 82 88 SWEETWATER Deer Park 9700 7.7 8.2 94 9.0 11.7 77 Larsen Creek 9000 4.5 6.7 67 7.1 -M * South Pass 9040 7.1 8.2 87 5.0 10.3 49 ----- ----- Basin Index (%) 84 64 LOWER N. PLATTE Casper Mtn. 7900 5.1 7.2 71 3.9 8.6 45 Laprele Creek 8375 4.0 5.3 75 5.5 7.1 77 Reno Hill 8400 6.2 7.3 85 7.3 8.5 86 Windy Peak 7900 3.8 3.9 97 5.1 6.1 84 ----- ----- Basin Index (%) 81 72 LARAMIE RIVER Brooklyn Lake 10240 13.5 11.5 117 14.3 12.0 119 Cinnabar Park 9574 13.9 12.4 112 16.5 14.8 111 Crow Creek 8330 1.9 5.5 35 7.1 6.3 113 Deadman Hill 10220 11.3 9.0 126 11.2 9.6 117 Rawah 9020 6.6 5.8 114 9.3 8.7 107 Roach 9700 8.4 9.5 88 11.0 11.1 99 ----- ----- Basin Index (%) 104 111 S. PLATTE Black Mountain 8920 5.5 -M * 8.2 -M * Crow Creek 8330 1.9 5.5 35 7.1 6.3 113 Deadman Hill 10220 11.3 9.0 126 11.2 9.6 117 ----- ----- Basin Index (%) 91 115 LITTLE SNAKE RIVER Battle Mountain 7440 3.4 6.5 52 -M 9.1 * Divide Peak 8880 8.3 11.4 73 11.6 12.9 90 Elk River 8700 8.2 10.1 81 9.5 11.9 80 Little Snake River 8915 10.6 13.8 77 16.0 19.3 83 Old Battle 10000 14.3 17.6 81 13.7 20.9 66 Sage Creek Basin 7850 5.8 7.6 76 7.1 9.1 78 Sandstone RS 8150 5.2 7.4 70 5.0 11.2 45 Whiskey Park 8950 11.8 14.9 79 14.6 16.5 88 ----- ----- Basin Index (%) 76 76 UPPER GREEN RIVER Big Sandy Opening 9080 7.9 7.3 108 8.0 7.9 101 Blind Bull Sum 8650 17.5 12.9 136 11.2 12.1 93 East Rim Divide 7930 6.3 6.4 98 6.7 7.2 93 Elkhart Park G.S. 9400 7.1 7.0 101 7.1 8.0 89 Gros Ventre Summit 8750 9.4 7.8 121 8.9 7.7 116 Gunsight Pass 9820 9.2 7.8 118 9.6 8.4 114 Kendall R.S. 7740 8.4 7.2 117 9.4 8.6 109 Loomis Park 8240 9.0 9.0 100 9.9 10.6 93 New Fork Lake 8340 6.7 6.4 105 -M 6.6 * Pocket Creek 9360 6.2 -M * 5.4 -M * Snider Basin 8060 6.5 6.9 94 8.4 8.6 98 Spring Creek Divide 9000 14.2 12.9 110 14.1 14.4 98 Triple Peak 8500 14.6 12.0 122 16.6 15.0 111 ----- ----- Basin Index (%) 113 101 LOWER GREEN RIVER Blacks Fork Jct 8869 4.3 -M * 5.7 -M * Buck Pasture 9632 6.8 -M * 7.8 -M * EF Blacks Fork GS 9360 4.0 -M * 4.3 -M * Hams Fork 7840 4.7 6.7 70 5.3 6.8 78 Hewinta 9500 4.9 5.1 96 6.9 8.1 85 Hickerson Park 9122 4.2 3.4 124 3.6 5.8 62 Hole-in-Rock 9168 3.7 3.7 100 4.3 5.5 78 Indian Creek 9425 11.8 13.6 87 9.0 13.1 69 Kelley R.S. 8180 7.0 8.4 83 8.2 10.8 76 Spirit Lk 10235 4.8 -M * 5.5 -M * Steel Creek Park 10158 8.1 7.9 103 8.3 9.3 89 ----- ----- Basin Index (%) 91 77 UPPER BEAR RIVER Bear River RS 8777 5.1 -M * 6.6 -M * Bug Lake 7987 9.0 9.4 96 9.8 11.6 84 Burts Miller Ranch 8000 3.5 -M * 4.2 -M * Chalk Creek #1 9171 8.6 12.4 69 9.5 14.6 65 Hayden Fork 9130 7.2 8.0 90 9.1 12.3 74 Kelley R.S. 8180 7.0 8.4 83 8.2 10.8 76 Lily Lake 9133 6.7 6.9 97 7.0 10.0 70 Monte Cristo 8932 11.8 14.4 82 11.7 15.3 76 Salt River Summit 7640 5.5 7.2 76 7.4 9.9 75 ----- ----- Basin Index (%) 84 74 ----------------------------------------------------------------------------- -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.