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 7 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 6.4 7.9 81 6.8 10.8 63 Black Bear 8170 13.5 19.0 71 13.6 19.5 70 Blind Bull Sum 8650 10.5 10.1 104 6.5 10.1 64 Cottonwood Creek 7670 11.6 9.0 129 11.7 12.2 96 East Rim Divide 7930 5.3 4.8 110 4.5 6.0 75 Grand Targhee 9260 20.0 19.1 105 12.5 16.6 75 Granite Creek 6770 6.5 7.0 93 6.9 10.3 67 Grassy Lake 7265 11.3 14.2 80 19.0 18.6 102 Gros Ventre Summit 8750 4.9 6.6 74 4.9 6.6 74 Gunsight Pass 9820 6.1 6.7 91 6.3 7.0 90 Lewis Lake Divide 7850 9.4 14.5 65 12.1 18.3 66 Phillips Bench 8200 11.9 12.1 98 11.8 14.1 84 Salt River Summit 7640 5.9 5.3 111 6.6 8.2 80 Snake River Station 6920 7.1 7.4 96 8.9 12.0 74 Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86 Thumb Divide 7980 5.7 6.8 84 6.5 9.5 68 Togwotee Pass 9580 12.4 11.8 105 11.8 12.5 94 Two Ocean Plateau 9240 12.4 13.6 91 9.8 13.7 72 Willow Creek 8080 12.3 12.1 102 14.3 17.0 84 Younts Peak 8350 8.0 7.3 110 4.8 8.4 57 ----- ----- Basin Index (%) 93 78 MADISON-GALLATIN Black Bear 8170 13.5 19.0 71 13.6 19.5 70 Canyon 7870 5.9 6.1 97 6.1 8.5 72 Madison Plateau 7750 9.0 10.8 83 8.3 13.6 61 West Yellowstone 6700 4.9 5.3 92 3.8 7.7 49 Whiskey Creek 6800 6.6 7.5 88 7.7 10.6 73 ----- ----- Basin Index (%) 82 66 YELLOWSTONE Beartooth Lake 9360 10.8 10.7 101 9.9 9.9 100 Burnt Mtn 5880 1.6 1.9 84 6.4 7.0 91 Canyon 7870 5.9 6.1 97 6.1 8.5 72 Cole Creek 7850 7.0 6.5 108 6.0 6.7 90 Evening Star 9200 13.0 12.5 104 14.5 14.2 102 Fisher Creek 9100 14.3 16.4 87 14.8 16.3 91 Northeast Entrance 7350 5.1 4.7 109 6.2 6.7 93 Parker Peak 9400 12.0 10.8 111 11.0 9.2 120 Sylvan Lake 8420 9.5 10.1 94 10.9 12.0 91 Thumb Divide 7980 5.7 6.8 84 6.5 9.5 68 Two Ocean Plateau 9240 12.4 13.6 91 9.8 13.7 72 White Mill 8700 12.0 11.0 109 9.3 12.2 76 Wolverine 7650 7.4 5.4 137 7.2 6.7 107 Younts Peak 8350 8.0 7.3 110 4.8 8.4 57 ----- ----- Basin Index (%) 101 88 WIND RIVER Burroughs Creek 8750 5.5 -M * 6.9 -M * Castle Creek 8400 3.0 -M * 3.8 -M * Cold Springs 9630 3.8 3.4 112 3.6 5.2 69 Deer Park 9700 5.9 6.8 87 5.1 9.8 52 Hobbs Park 10100 5.9 7.0 84 5.4 6.6 82 Kirwin 9550 6.6 4.6 143 5.3 6.0 88 Little Warm 9370 6.0 4.9 122 3.9 6.6 59 Owl Creek 8975 2.9 2.7 107 3.4 3.0 113 South Pass 9040 4.8 6.9 70 3.9 8.9 44 St. Lawrence Alt 8620 2.8 3.2 88 3.7 4.5 82 Togwotee Pass 9580 12.4 11.8 105 11.8 12.5 94 Townsend Creek 8700 4.6 4.2 110 4.7 6.1 77 ----- ----- Basin Index (%) 100 73 BIGHORN BASIN Bald Mtn. 9380 11.2 9.2 122 8.0 8.5 94 Bear Trap Meadow 8200 5.0 2.7 185 5.7 4.4 130 Bone Springs Div 9350 8.8 7.8 113 6.3 7.7 82 Grave Springs 8550 5.4 3.8 142 6.4 5.3 121 Kirwin 9550 6.6 4.6 143 5.3 6.0 88 Marquette 8760 4.0 -M * 4.8 -M * Middle Powder 7760 6.1 5.3 115 7.1 6.3 113 Owl Creek 8975 2.9 2.7 107 3.4 3.0 113 Powder River Pass 9480 6.9 5.2 133 6.8 6.4 106 Shell Creek 9580 -M 7.4 * -M 7.0 * Timber Creek 7950 3.6 2.2 164 4.0 4.0 100 ----- ----- Basin Index (%) 130 103 SHOSHONE RIVER Blackwater 9780 10.7 11.3 95 10.2 10.7 95 Evening Star 9200 13.0 12.5 104 14.5 14.2 102 Marquette 8760 4.0 -M * 4.8 -M * Sylvan Lake 8420 9.5 10.1 94 10.9 12.0 91 Sylvan Road 7120 5.8 6.0 97 -M 9.7 * Younts Peak 8350 8.0 7.3 110 4.8 8.4 57 ----- ----- Basin Index (%) 100 89 POWDER RIVER Bear Trap Meadow 8200 5.0 2.7 185 5.7 4.4 130 Cloud Peak Reservoir 9860 6.5 6.6 98 6.6 6.6 100 Grave Springs 8550 5.4 3.8 142 6.4 5.3 121 Hansen Sawmill 8360 3.5 3.2 109 4.4 4.2 105 Middle Powder 7760 6.1 5.3 115 7.1 6.3 113 Powder River Pass 9480 6.9 5.2 133 6.8 6.4 106 Soldier Park 8720 2.2 -M * 4.5 -M * ----- ----- Basin Index (%) 125 111 TONGUE RIVER Big Goose 7990 3.9 3.9 100 5.4 5.5 98 Bone Springs Div 9350 8.8 7.8 113 6.3 7.7 82 Burgess Junction 7880 5.2 5.0 104 -M 6.2 * Dome Lake 8880 4.9 5.6 88 3.7 7.1 52 Little Goose 8870 4.7 -M * 4.2 -M * Sucker Creek 8880 6.6 5.6 118 5.4 7.1 76 Tie Creek 6870 3.3 2.3 143 6.4 5.9 108 ----- ----- Basin Index (%) 108 82 BELLE FOURCHE Blind Park 6890 3.9 3.6 108 5.1 6.3 81 Cole Canyon 5910 2.8 2.4 117 -M 4.8 * ----- ----- Basin Index (%) 112 81 CHEYENNE RIVER BASIN Blind Park 6890 3.9 3.6 108 5.1 6.3 81 North Rapid Creek 6130 3.5 3.3 106 5.1 5.3 96 ----- ----- Basin Index (%) 107 88 UPPER N. PLATTE Arapaho Ridge 10960 11.5 10.3 112 11.3 11.7 97 Blackhall Mtn 9820 14.6 -M * 15.1 -M * Columbine 9160 13.0 9.9 131 13.9 12.5 111 Divide Peak 8880 11.0 9.4 117 12.1 11.1 109 Joe Wright 10120 8.1 10.1 80 12.2 13.0 94 Laprele Creek 8375 6.8 4.3 158 7.2 6.2 116 Med Bow 10500 21.4 -M * 18.6 -M * Never Summer 10280 8.9 9.7 92 6.4 -M * North French Creek 10130 15.7 12.6 125 15.8 13.1 121 Old Battle 10000 16.0 14.1 113 15.5 17.7 88 Rawah 9020 6.3 5.0 126 7.8 7.9 99 Sage Creek Basin 7850 8.0 6.4 125 7.0 8.1 86 Sand Lake 10050 14.5 12.9 112 13.6 12.0 113 South Brush Creek 8440 6.2 5.3 117 6.7 7.7 87 Tower 10500 20.4 19.4 105 19.4 19.9 97 Webber Springs 9250 11.4 10.7 107 12.6 13.4 94 Whiskey Park 8950 15.9 10.4 153 16.7 13.3 126 Willow Creek Pass 9540 6.0 5.8 103 5.6 6.9 81 Zirkel 9340 14.0 11.7 120 16.1 15.1 107 ----- ----- Basin Index (%) 115 102 SWEETWATER Deer Park 9700 5.9 6.8 87 5.1 9.8 52 Larsen Creek 9000 1.9 5.4 35 3.8 -M * South Pass 9040 4.8 6.9 70 3.9 8.9 44 ----- ----- Basin Index (%) 66 48 LOWER N. PLATTE Casper Mtn. 7900 8.6 6.3 137 6.1 7.7 79 Laprele Creek 8375 6.8 4.3 158 7.2 6.2 116 Reno Hill 8400 8.8 6.2 142 9.3 7.5 124 Windy Peak 7900 5.6 3.2 175 4.8 5.4 89 ----- ----- Basin Index (%) 149 102 LARAMIE RIVER Brooklyn Lake 10240 13.6 8.9 153 13.5 9.9 136 Cinnabar Park 9574 12.6 10.2 124 14.0 12.7 110 Crow Creek 8330 4.8 4.8 100 6.6 5.7 116 Deadman Hill 10220 9.5 7.5 127 8.3 8.3 100 Rawah 9020 6.3 5.0 126 7.8 7.9 99 Roach 9700 8.0 7.4 108 7.6 9.6 79 Windy Peak 7900 5.6 3.2 175 4.8 5.4 89 ----- ----- Basin Index (%) 129 105 S. PLATTE Black Mountain 8920 5.8 -M * 7.0 -M * Crow Creek 8330 4.8 4.8 100 6.6 5.7 116 Deadman Hill 10220 9.5 7.5 127 8.3 8.3 100 ----- ----- Basin Index (%) 116 106 LITTLE SNAKE RIVER Battle Mountain 7440 7.7 4.8 160 7.7 7.6 101 Divide Peak 8880 11.0 9.4 117 12.1 11.1 109 Elk River 8700 10.7 7.9 135 8.4 9.9 85 Little Snake River 8915 13.8 10.2 135 17.8 16.2 110 Old Battle 10000 16.0 14.1 113 15.5 17.7 88 Sage Creek Basin 7850 8.0 6.4 125 7.0 8.1 86 Sandstone RS 8150 9.1 5.3 172 8.4 9.3 90 Whiskey Park 8950 15.9 10.4 153 16.7 13.3 126 ----- ----- Basin Index (%) 135 100 UPPER GREEN RIVER Big Sandy Opening 9080 4.5 6.7 67 3.9 6.8 57 Blind Bull Sum 8650 10.5 10.1 104 6.5 10.1 64 East Rim Divide 7930 5.3 4.8 110 4.5 6.0 75 Elkhart Park G.S. 9400 4.9 5.9 83 4.9 6.9 71 Gros Ventre Summit 8750 4.9 6.6 74 4.9 6.6 74 Gunsight Pass 9820 6.1 6.7 91 6.3 7.0 90 Indian Creek 9425 9.3 10.7 87 7.4 10.8 69 Kendall R.S. 7740 4.6 5.3 87 4.7 7.1 66 Loomis Park 8240 6.3 6.9 91 8.5 8.8 97 New Fork Lake 8340 5.3 5.0 106 -M 5.6 * Pocket Creek 9360 -M -M * 3.3 -M * Snider Basin 8060 5.8 5.8 100 6.4 7.2 89 Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86 Triple Peak 8500 11.3 9.1 124 11.5 12.1 95 ----- ----- Basin Index (%) 94 79 LOWER GREEN RIVER Blacks Fork Jct 8869 3.8 -M * 6.8 -M * Buck Pasture 9632 9.2 -M * 9.3 -M * EF Blacks Fork GS 9360 7.8 -M * 5.6 -M * Hams Fork 7840 5.0 5.0 100 5.3 5.7 93 Hewinta 9500 5.6 4.1 137 8.0 6.9 116 Hickerson Park 9122 6.1 3.0 203 6.8 5.2 131 Hole-in-Rock 9168 6.7 3.1 216 7.0 4.9 143 Indian Creek 9425 9.3 10.7 87 7.4 10.8 69 Kelley R.S. 8180 7.1 6.7 106 7.6 9.1 84 Spirit Lk 10235 9.8 -M * 10.6 -M * Steel Creek Park 10158 8.9 6.5 137 9.7 8.0 121 ----- ----- Basin Index (%) 125 102 UPPER BEAR RIVER Bear River RS 8777 4.4 -M * 5.8 -M * Bug Lake 7987 9.5 6.9 138 9.1 9.8 93 Burts Miller Ranch 8000 4.0 -M * 4.2 -M * Chalk Creek #1 9171 9.3 10.5 89 8.8 12.6 70 Hayden Fork 9130 7.3 6.4 114 10.3 10.4 99 Kelley R.S. 8180 7.1 6.7 106 7.6 9.1 84 Lily Lake 9133 5.4 5.5 98 6.5 8.7 75 Monte Cristo 8932 13.5 11.4 118 12.5 12.9 97 Salt River Summit 7640 5.9 5.3 111 6.6 8.2 80 Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86 ----- ----- Basin Index (%) 108 86 ----------------------------------------------------------------------------- -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.