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: FEBRUARY 10 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 13.4 11.5 117 15.0 14.9 101 Black Bear 8170 28.8 25.6 112 27.5 26.5 104 Blind Bull Sum 8650 23.7 15.1 157 14.3 13.7 104 Cottonwood Creek 7670 15.1 13.8 109 17.2 16.9 102 East Rim Divide 7930 8.6 7.0 123 8.4 8.2 102 Grand Targhee 9260 34.8 25.0 139 22.2 22.1 100 Granite Creek 6770 12.4 11.6 107 15.1 14.5 104 Grassy Lake 7265 21.8 22.2 98 25.2 25.6 98 Gros Ventre Summit 8750 9.8 8.7 113 9.5 8.7 109 Gunsight Pass 9820 11.1 8.8 126 11.2 9.5 118 Lewis Lake Divide 7850 26.2 21.8 120 27.5 24.8 111 Phillips Bench 8200 17.0 16.9 101 17.8 19.5 91 Salt River Summit 7640 6.7 8.5 79 8.6 11.4 75 Snake River Station 6920 13.6 12.2 111 17.8 16.4 109 Spring Creek Divide 9000 18.1 15.7 115 17.4 16.5 105 Thumb Divide 7980 12.7 10.0 127 13.3 12.9 103 Togwotee Pass 9580 22.3 15.7 142 22.4 16.9 133 Two Ocean Plateau 9240 28.0 18.9 148 20.2 18.5 109 Willow Creek 8080 22.0 18.2 121 24.5 23.0 107 Younts Peak 8350 -M 10.2 * -M 11.1 * ----- ----- Basin Index (%) 121 105 MADISON-GALLATIN Black Bear 8170 28.8 25.6 112 27.5 26.5 104 Canyon 7870 12.1 8.7 139 13.9 11.5 121 Madison Plateau 7750 17.7 15.1 117 18.2 18.4 99 West Yellowstone 6700 9.0 7.3 123 11.7 10.3 114 Whiskey Creek 6800 10.7 10.0 107 12.8 14.1 91 ----- ----- Basin Index (%) 117 104 YELLOWSTONE Beartooth Lake 9360 30.1 14.8 203 -M 13.7 * Burnt Mtn 5880 4.2 2.9 145 10.1 8.4 120 Canyon 7870 12.1 8.7 139 13.9 11.5 121 Cole Creek 7850 10.1 8.8 115 6.4 8.1 79 Evening Star 9200 31.3 16.7 187 30.8 19.2 160 Fisher Creek 9100 39.4 22.0 179 32.8 22.1 148 Northeast Entrance 7350 10.5 6.9 152 13.9 8.8 158 Parker Peak 9400 24.5 13.7 179 21.1 12.1 174 Sylvan Lake 8420 17.5 13.5 130 19.3 15.7 123 Thumb Divide 7980 12.7 10.0 127 13.3 12.9 103 Two Ocean Plateau 9240 28.0 18.9 148 20.2 18.5 109 White Mill 8700 32.0 15.6 205 23.0 16.5 139 Wolverine 7650 -M 7.4 * -M 8.7 * ----- ----- Basin Index (%) 166 133 WIND RIVER Burroughs Creek 8750 11.6 -M * 13.3 -M * Castle Creek 8400 6.3 -M * 7.6 -M * Cold Springs 9630 7.0 4.8 146 7.1 6.5 109 Deer Park 9700 7.6 9.5 80 9.8 13.2 74 Hobbs Park 10100 11.7 8.1 144 9.8 8.2 120 Kirwin 9550 14.6 6.1 239 13.2 7.6 174 Little Warm 9370 11.6 6.7 173 11.8 8.7 136 Owl Creek 8975 3.0 3.2 94 4.7 3.7 127 South Pass 9040 7.7 9.8 79 -M 11.6 * St. Lawrence Alt 8620 2.4 4.3 56 6.3 5.6 112 Togwotee Pass 9580 22.3 15.7 142 22.4 16.9 133 Townsend Creek 8700 5.0 5.7 88 6.1 7.5 81 ----- ----- Basin Index (%) 126 117 BIGHORN BASIN Bald Mtn. 9380 15.6 11.7 133 10.5 11.4 92 Bear Trap Meadow 8200 6.5 3.6 181 7.4 5.4 137 Bone Springs Div 9350 14.0 10.1 139 10.2 10.2 100 Grave Springs 8550 4.7 5.2 90 3.7 6.8 54 Kirwin 9550 14.6 6.1 239 13.2 7.6 174 Marquette 8760 4.0 -M * 7.6 -M * Middle Powder 7760 6.2 6.8 91 -M 7.8 * Owl Creek 8975 3.0 3.2 94 4.7 3.7 127 Powder River Pass 9480 12.8 6.9 186 11.5 8.3 139 Shell Creek 9580 -M 9.6 * 12.4 9.4 132 Timber Creek 7950 2.5 3.1 81 1.7 4.7 36 ----- ----- Basin Index (%) 141 112 SHOSHONE RIVER Blackwater 9780 25.7 15.1 170 23.5 14.0 168 Evening Star 9200 31.3 16.7 187 30.8 19.2 160 Marquette 8760 4.0 -M * 7.6 -M * Sylvan Road 7120 11.3 8.2 138 16.3 12.5 130 Younts Peak 8350 -M 10.2 * -M 11.1 * ----- ----- Basin Index (%) 171 154 POWDER RIVER Bear Trap Meadow 8200 6.5 3.6 181 7.4 5.4 137 Cloud Peak Reservoir 9860 11.5 9.0 128 9.9 8.4 118 Grave Springs 8550 4.7 5.2 90 3.7 6.8 54 Hansen Sawmill 8360 5.4 4.2 129 6.8 5.3 128 Middle Powder 7760 6.2 6.8 91 -M 7.8 * Powder River Pass 9480 12.8 6.9 186 11.5 8.3 139 Soldier Park 8720 4.1 -M * 6.5 -M * ----- ----- Basin Index (%) 132 115 TONGUE RIVER Big Goose 7990 4.9 5.3 92 5.4 7.0 77 Bone Springs Div 9350 14.0 10.1 139 10.2 10.2 100 Burgess Junction 7880 6.6 7.1 93 5.5 7.9 70 Dome Lake 8880 9.9 7.3 136 8.1 8.8 92 Little Goose 8870 6.2 -M * 8.1 -M * Sucker Creek 8880 7.2 7.5 96 -M 9.2 * Tie Creek 6870 2.8 3.6 78 5.4 7.5 72 ----- ----- Basin Index (%) 111 84 BELLE FOURCHE Cole Canyon 5910 5.0 3.9 128 6.8 6.2 110 ----- ----- Basin Index (%) 128 110 CHEYENNE RIVER BASIN Blind Park 6890 6.2 5.3 117 8.6 8.2 105 North Rapid Creek 6130 5.5 4.9 112 5.8 6.6 88 ----- ----- Basin Index (%) 115 97 UPPER N. PLATTE Arapaho Ridge 10960 13.3 14.0 95 13.3 15.2 88 Blackhall Mtn 9820 17.8 -M * 17.8 -M * Columbine 9160 14.1 16.0 88 16.4 17.5 94 Divide Peak 8880 9.0 13.5 67 12.4 14.6 85 Joe Wright 10120 10.8 13.5 80 19.2 17.0 113 Laprele Creek 8375 4.5 5.9 76 5.9 8.1 73 Med Bow 10500 28.9 -M * 24.2 -M * North French Creek 10130 19.0 17.3 110 19.2 17.9 107 Never Summer 10280 12.0 13.2 91 9.9 -M * Old Battle 10000 16.7 20.8 80 16.5 24.0 69 Rawah 9020 6.9 6.9 100 10.3 9.5 108 Sage Creek Basin 7850 6.1 9.0 68 7.2 10.5 69 Sand Lake 10050 18.0 17.6 102 14.9 16.0 93 South Brush Creek 8440 6.6 7.6 87 8.2 10.1 81 Tower 10500 22.1 30.3 73 22.3 27.2 82 Webber Springs 9250 12.1 15.4 79 14.5 18.1 80 Willow Creek Pass 9540 8.7 8.1 107 9.5 8.8 108 Zirkel 9340 16.6 19.6 85 21.3 20.3 105 ----- ----- Basin Index (%) 86 90 SWEETWATER Deer Park 9700 7.6 9.5 80 9.8 13.2 74 Larsen Creek 9000 7.1 8.0 89 7.9 -M * South Pass 9040 7.7 9.8 79 -M 11.6 * ----- ----- Basin Index (%) 82 74* LOWER N. PLATTE Casper Mtn. 7900 5.5 8.1 68 4.1 9.6 43 Laprele Creek 8375 4.5 5.9 76 5.9 8.1 73 Reno Hill 8400 6.8 8.2 83 7.7 9.5 81 Windy Peak 7900 4.0 4.5 89 5.6 6.7 84 ----- ----- Basin Index (%) 78 69 LARAMIE RIVER Brooklyn Lake 10240 17.5 12.7 138 18.1 13.7 132 Cinnabar Park 9574 -M 14.1 * -M 17.0 * Crow Creek 8330 2.0 5.8 34 7.6 6.7 113 Deadman Hill 10220 13.3 10.8 123 12.9 10.9 118 Rawah 9020 6.9 6.9 100 10.3 9.5 108 Roach 9700 9.7 10.7 91 12.3 12.6 98 ----- ----- Basin Index (%) 105 115 S. PLATTE Black Mountain 8920 6.1 -M * 8.8 -M * Crow Creek 8330 2.0 5.8 34 7.6 6.7 113 Deadman Hill 10220 13.3 10.8 123 12.9 10.9 118 ----- ----- Basin Index (%) 92 116 LITTLE SNAKE RIVER Battle Mountain 7440 3.5 7.7 45 6.5 10.3 63 Divide Peak 8880 9.0 13.5 67 12.4 14.6 85 Elk River 8700 9.3 12.5 74 10.6 13.6 78 Little Snake River 8915 13.8 17.0 81 19.0 22.1 86 Old Battle 10000 16.7 20.8 80 16.5 24.0 69 Sage Creek Basin 7850 6.1 9.0 68 7.2 10.5 69 Sandstone RS 8150 5.5 8.9 62 5.5 12.8 43 Whiskey Park 8950 14.8 17.4 85 17.2 19.2 90 ----- ----- Basin Index (%) 74 75 UPPER GREEN RIVER Big Sandy Opening 9080 8.8 8.7 101 8.8 8.8 100 Blind Bull Sum 8650 23.7 15.1 157 14.3 13.7 104 East Rim Divide 7930 8.6 7.0 123 8.4 8.2 102 Elkhart Park G.S. 9400 8.8 8.0 110 8.1 9.0 90 Gros Ventre Summit 8750 9.8 8.7 113 9.5 8.7 109 Gunsight Pass 9820 11.1 8.8 126 11.2 9.5 118 Kendall R.S. 7740 10.3 8.3 124 10.9 9.9 110 Loomis Park 8240 11.7 10.2 115 12.6 12.0 105 New Fork Lake 8340 8.5 7.1 120 7.6 7.5 101 Pocket Creek 9360 6.3 -M * 5.9 -M * Snider Basin 8060 8.9 8.4 106 10.7 9.9 108 Spring Creek Divide 9000 18.1 15.7 115 17.4 16.5 105 Triple Peak 8500 20.2 14.4 140 22.0 17.1 129 ----- ----- Basin Index (%) 123 108 LOWER GREEN RIVER Blacks Fork Jct 8869 4.9 -M * 6.1 -M * Buck Pasture 9632 7.6 -M * 8.3 -M * EF Blacks Fork GS 9360 5.4 -M * 4.3 -M * Hams Fork 7840 5.6 7.8 72 6.1 7.8 78 Hewinta 9500 4.7 6.4 73 7.5 9.2 82 Hickerson Park 9122 4.5 4.3 105 4.1 6.5 63 Hole-in-Rock 9168 3.9 4.3 91 4.8 6.1 79 Indian Creek 9425 14.0 15.6 90 10.3 15.1 68 Kelley R.S. 8180 8.4 9.6 88 9.5 12.4 77 Spirit Lk 10235 5.0 -M * 5.8 -M * Steel Creek Park 10158 8.4 9.5 88 8.9 10.6 84 ----- ----- Basin Index (%) 86 76 UPPER BEAR RIVER Bear River RS 8777 5.8 -M * 7.1 -M * Bug Lake 7987 9.9 12.2 81 10.6 13.2 80 Burts Miller Ranch 8000 3.6 -M * 4.5 -M * Chalk Creek #1 9171 9.4 14.6 64 10.3 16.7 62 Hayden Fork 9130 8.0 9.5 84 10.3 14.0 74 Kelley R.S. 8180 8.4 9.6 88 9.5 12.4 77 Lily Lake 9133 7.0 8.0 88 7.4 11.3 65 Monte Cristo 8932 12.6 17.2 73 12.8 17.4 74 Salt River Summit 7640 6.7 8.5 79 8.6 11.4 75 ----- ----- Basin Index (%) 78 72 ----------------------------------------------------------------------------- -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.