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 TUESDAY: JANUARY 22 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 8.6 10.1 85 10.7 12.7 84 Black Bear 8170 16.8 22.1 76 18.5 22.7 81 Blind Bull Sum 8650 10.3 12.8 80 8.9 11.8 75 Cottonwood Creek 7670 11.0 11.4 96 13.7 14.5 94 East Rim Divide 7930 4.9 6.2 79 5.6 7.1 79 Grand Targhee 9260 24.7 21.7 114 19.7 18.5 106 Granite Creek 6770 8.5 9.2 92 10.6 12.4 85 Grassy Lake 7265 14.4 17.8 81 18.2 21.8 83 Gros Ventre Summit 8750 4.6 7.8 59 5.4 7.6 71 Gunsight Pass 9820 6.1 7.8 78 8.4 8.2 102 Lewis Lake Divide 7850 13.4 17.6 76 17.7 21.2 83 Phillips Bench 8200 11.2 15.6 72 14.6 16.6 88 Salt River Summit 7640 6.1 7.1 86 8.2 9.8 84 Snake River Station 6920 8.9 9.4 95 13.6 14.1 96 Spring Creek Divide 9000 11.4 12.7 90 12.9 14.2 91 Thumb Divide 7980 6.5 8.5 76 8.5 11.2 76 Togwotee Pass 9580 12.6 13.3 95 13.4 14.6 92 Two Ocean Plateau 9240 14.6 15.8 92 12.7 16.0 79 Willow Creek 8080 13.6 15.4 88 18.1 19.8 91 Younts Peak 8350 -M 8.8 * -M 9.7 * ----- ----- Basin Index (%) 86 87 MADISON-GALLATIN Black Bear 8170 16.8 22.1 76 18.5 22.7 81 Canyon 7870 6.1 7.6 80 7.6 9.9 77 Madison Plateau 7750 9.6 13.4 72 10.8 15.9 68 West Yellowstone 6700 5.5 6.6 83 7.1 8.8 81 Whiskey Creek 6800 6.1 8.9 69 7.0 12.2 57 ----- ----- Basin Index (%) 75 73 YELLOWSTONE Beartooth Lake 9360 9.1 12.8 71 8.1 11.7 69 Burnt Mtn 5880 3.9 2.3 170 7.5 7.5 100 Canyon 7870 6.1 7.6 80 7.6 9.9 77 Cole Creek 7850 9.1 7.6 120 7.3 7.2 101 Evening Star 9200 13.8 14.5 95 16.7 16.5 101 Fisher Creek 9100 13.5 19.3 70 16.9 19.0 89 Northeast Entrance 7350 5.3 5.8 91 7.7 7.6 101 Parker Peak 9400 12.3 12.1 102 13.2 10.5 126 Sylvan Lake 8420 11.4 11.8 97 16.4 13.7 120 Thumb Divide 7980 6.5 8.5 76 8.5 11.2 76 Two Ocean Plateau 9240 14.6 15.8 92 12.7 16.0 79 White Mill 8700 10.0 13.5 74 9.0 14.1 64 Wolverine 7650 5.8 6.3 92 7.1 7.6 93 ----- ----- Basin Index (%) 88 91 WIND RIVER Burroughs Creek 8750 4.2 -M * 5.6 -M * Castle Creek 8400 1.9 -M * 3.2 -M * Cold Springs 9630 3.9 4.2 93 4.0 5.8 69 Deer Park 9700 7.9 8.0 99 8.1 11.5 70 Hobbs Park 10100 6.9 7.6 91 5.2 7.3 71 Kirwin 9550 4.6 5.4 85 4.8 6.8 71 Little Warm 9370 4.2 5.8 72 5.0 7.6 66 Owl Creek 8975 3.6 3.0 120 4.1 3.3 124 South Pass 9040 6.7 8.1 83 6.2 10.1 61 St. Lawrence Alt 8620 2.5 3.7 68 4.9 5.0 98 Togwotee Pass 9580 12.6 13.3 95 13.4 14.6 92 Townsend Creek 8700 5.1 4.6 111 5.8 6.7 87 ----- ----- Basin Index (%) 91 78 BIGHORN BASIN Bald Mtn. 9380 10.4 10.1 103 6.5 9.9 66 Bear Trap Meadow 8200 5.0 3.1 161 4.5 4.9 92 Bone Springs Div 9350 7.5 9.2 82 6.5 8.9 73 Grave Springs 8550 4.1 4.6 89 4.9 6.0 82 Kirwin 9550 4.6 5.4 85 4.8 6.8 71 Marquette 8760 5.2 -M * -M -M * Middle Powder 7760 5.8 6.0 97 3.8 6.9 55 Owl Creek 8975 3.6 3.0 120 4.1 3.3 124 Powder River Pass 9480 5.8 5.9 98 5.2 7.3 71 Shell Creek 9580 -M 8.6 * -M 8.1 * Timber Creek 7950 2.4 2.8 86 4.2 4.3 98 ----- ----- Basin Index (%) 98 76 SHOSHONE RIVER Blackwater 9780 12.9 13.2 98 13.6 12.2 111 Evening Star 9200 13.8 14.5 95 16.7 16.5 101 Marquette 8760 5.2 -M * -M -M * Sylvan Road 7120 6.8 7.2 94 9.8 11.1 88 Younts Peak 8350 -M 8.8 * -M 9.7 * ----- ----- Basin Index (%) 96 101 POWDER RIVER Bear Trap Meadow 8200 5.0 3.1 161 4.5 4.9 92 Cloud Peak Reservoir 9860 7.1 7.7 92 6.8 7.4 92 Grave Springs 8550 4.1 4.6 89 4.9 6.0 82 Hansen Sawmill 8360 3.3 3.7 89 4.8 4.7 102 Middle Powder 7760 5.8 6.0 97 3.8 6.9 55 Powder River Pass 9480 5.8 5.9 98 5.2 7.3 71 Soldier Park 8720 2.4 -M * 4.6 -M * ----- ----- Basin Index (%) 100 81 TONGUE RIVER Big Goose 7990 4.7 4.4 107 6.6 6.1 108 Bone Springs Div 9350 7.5 9.2 82 6.5 8.9 73 Burgess Junction 7880 5.1 6.2 82 5.3 7.0 76 Dome Lake 8880 3.5 6.4 55 4.6 7.8 59 Little Goose 8870 5.8 -M * 5.3 -M * Sucker Creek 8880 6.6 6.6 100 6.0 8.1 74 Tie Creek 6870 2.4 3.1 77 6.5 6.7 97 ----- ----- Basin Index (%) 83 80 BELLE FOURCHE Cole Canyon 5910 3.7 3.0 123 6.7 5.4 124 ----- ----- Basin Index (%) 123 124 CHEYENNE RIVER BASIN Blind Park 6890 3.9 4.1 95 3.8 7.2 53 North Rapid Creek 6130 3.3 3.9 85 3.9 5.9 66 ----- ----- Basin Index (%) 90 59 UPPER N. PLATTE Arapaho Ridge 10960 13.6 11.4 119 14.7 13.0 113 Blackhall Mtn 9820 16.4 -M * 19.1 -M * Columbine 9160 14.0 13.2 106 15.8 14.8 107 Divide Peak 8880 11.2 11.2 100 13.6 12.6 108 Joe Wright 10120 11.6 12.1 96 18.1 14.8 122 Laprele Creek 8375 7.5 5.3 142 8.2 7.0 117 Med Bow 10500 20.9 -M * 20.8 -M * North French Creek 10130 16.2 14.6 111 18.0 15.4 117 Never Summer 10280 11.6 11.1 105 11.2 -M * Old Battle 10000 19.1 16.8 114 20.9 20.6 101 Rawah 9020 6.1 5.7 107 8.9 8.6 103 Sage Creek Basin 7850 10.1 7.5 135 10.2 8.9 115 Sand Lake 10050 15.4 15.2 101 13.1 13.9 94 South Brush Creek 8440 6.1 6.6 92 7.1 8.8 81 Tower 10500 26.7 24.6 109 25.1 23.3 108 Webber Springs 9250 13.2 12.4 106 16.9 15.6 108 Willow Creek Pass 9540 8.2 6.7 122 10.1 7.7 131 Zirkel 9340 15.2 16.4 93 19.9 17.0 117 ----- ----- Basin Index (%) 108 109 SWEETWATER Deer Park 9700 7.9 8.0 99 8.1 11.5 70 Larsen Creek 9000 4.6 6.5 71 8.1 -M * South Pass 9040 6.7 8.1 83 6.2 10.1 61 ----- ----- Basin Index (%) 85 66 LOWER N. PLATTE Casper Mtn. 7900 8.5 7.0 121 6.9 8.5 81 Laprele Creek 8375 7.5 5.3 142 8.2 7.0 117 Reno Hill 8400 8.7 7.1 123 9.4 8.4 112 Windy Peak 7900 5.8 3.9 149 5.8 6.0 97 ----- ----- Basin Index (%) 131 101 LARAMIE RIVER Brooklyn Lake 10240 12.6 11.3 112 14.3 11.8 121 Cinnabar Park 9574 11.7 12.0 98 14.1 14.6 97 Crow Creek 8330 2.0 5.5 36 5.3 6.1 87 Deadman Hill 10220 10.3 8.8 117 9.8 9.5 103 Rawah 9020 6.1 5.7 107 8.9 8.6 103 Roach 9700 8.2 9.4 87 10.5 11.0 95 ----- ----- Basin Index (%) 97 102 S. PLATTE Black Mountain 8920 5.2 -M * 6.3 -M * Crow Creek 8330 2.0 5.5 36 5.3 6.1 87 Deadman Hill 10220 10.3 8.8 117 9.8 9.5 103 ----- ----- Basin Index (%) 86 97 LITTLE SNAKE RIVER Battle Mountain 7440 7.7 6.3 122 9.1 8.9 102 Divide Peak 8880 11.2 11.2 100 13.6 12.6 108 Elk River 8700 10.0 9.9 101 9.9 11.7 85 Little Snake River 8915 13.8 13.2 105 22.4 18.8 119 Old Battle 10000 19.1 16.8 114 20.9 20.6 101 Sage Creek Basin 7850 10.1 7.5 135 10.2 8.9 115 Sandstone RS 8150 9.4 7.3 129 10.6 11.0 96 Whiskey Park 8950 14.3 14.8 97 18.4 16.1 114 ----- ----- Basin Index (%) 110 106 UPPER GREEN RIVER Big Sandy Opening 9080 6.7 7.1 94 7.7 7.7 100 Blind Bull Sum 8650 10.3 12.8 80 8.9 11.8 75 East Rim Divide 7930 4.9 6.2 79 5.6 7.1 79 Elkhart Park G.S. 9400 6.1 7.0 87 7.1 7.9 90 Gros Ventre Summit 8750 4.6 7.8 59 5.4 7.6 71 Gunsight Pass 9820 6.1 7.8 78 8.4 8.2 102 Kendall R.S. 7740 5.7 6.9 83 6.6 8.4 79 Loomis Park 8240 7.4 8.7 85 8.7 10.3 84 New Fork Lake 8340 5.0 6.3 79 4.9 6.5 75 Pocket Creek 9360 8.3 -M * 9.2 -M * Snyder Basin 8060 6.1 6.7 91 7.9 8.4 94 Spring Creek Divide 9000 11.4 12.7 90 12.9 14.2 91 Triple Peak 8500 11.3 11.8 96 13.5 14.6 92 ----- ----- Basin Index (%) 84 87 LOWER GREEN RIVER Blacks Fork Jct 8869 5.3 -M * 7.8 -M * Buck Pasture 9632 8.7 -M * 11.4 -M * EF Blacks Fork GS 9360 6.6 -M * 6.7 -M * Hams Fork 7840 5.6 6.5 86 6.7 6.7 100 Hewinta 9500 5.9 5.1 116 8.9 8.0 111 Hickerson Park 9122 4.3 3.3 130 6.8 5.7 119 Hole-in-Rock 9168 3.4 3.7 92 6.4 5.4 119 Indian Creek 9425 10.3 13.5 76 9.0 12.8 70 Kelley R.S. 8180 7.4 8.1 91 8.4 10.6 79 Spirit Lk 10235 7.8 -M * 7.4 -M * Steel Creek Park 10158 8.9 7.7 116 10.9 9.2 118 ----- ----- Basin Index (%) 96 98 UPPER BEAR RIVER Bear River RS 8777 5.4 -M * 8.5 -M * Bug Lake 7987 9.5 9.2 103 12.9 11.4 113 Burts Miller Ranch 8000 3.2 -M * 5.2 -M * Chalk Creek #1 9171 11.7 12.1 97 16.3 14.3 114 Hayden Fork 9130 8.7 7.8 112 13.4 12.0 112 Kelley R.S. 8180 7.4 8.1 91 8.4 10.6 79 Lily Lake 9133 7.1 6.8 104 9.6 9.9 97 Monte Cristo 8932 14.0 14.1 99 15.4 15.0 103 Salt River Summit 7640 6.1 7.1 86 8.2 9.8 84 ----- ----- Basin Index (%) 99 101 ----------------------------------------------------------------------------- -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.