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 FRIDAY: DECEMBER 26 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 8.0 6.6 121 9.1 9.1 100 Black Bear 8170 14.3 15.8 91 15.4 16.2 95 Blind Bull Sum 8650 13.6 8.3 164 10.0 8.5 118 Cottonwood Creek 7670 11.2 7.7 145 13.7 10.2 134 East Rim Divide 7930 7.1 3.9 182 6.7 5.0 134 Grand Targhee 9260 18.4 16.3 113 15.6 14.1 111 Granite Creek 6770 10.3 5.5 187 10.9 8.5 128 Grassy Lake 7265 13.4 11.1 121 14.3 15.4 93 Gros Ventre Summit 8750 8.1 5.5 147 6.3 5.6 112 Gunsight Pass 9820 6.9 5.2 133 7.0 5.8 121 Lewis Lake Divide 7850 12.7 11.8 108 15.3 15.3 100 Phillips Bench 8200 12.2 9.7 126 13.5 11.6 116 Salt River Summit 7760 5.8 4.3 135 7.5 6.8 110 Snake River Station 6920 9.0 5.6 161 10.9 10.0 109 Spring Creek Divide 9000 13.6 8.7 156 13.6 9.9 137 Thumb Divide 7980 6.0 5.6 107 7.1 7.9 90 Togwotee Pass 9580 11.9 10.2 117 12.9 10.6 122 Two Ocean Plateau 9240 14.0 11.5 122 12.2 11.6 105 Willow Creek 8380 12.2 9.8 124 15.3 14.3 107 Younts Peak 8350 -M 6.4 * -M 7.0 * ----- ----- Basin Index (%) 128 111 MADISON-GALLATIN Black Bear 8170 14.3 15.8 91 15.4 16.2 95 Canyon 7870 6.0 4.8 125 6.6 7.2 92 Madison Plateau 7750 9.1 9.5 96 9.7 11.1 87 West Yellowstone 6700 4.0 4.1 98 5.5 6.4 86 Whiskey Creek 6800 5.7 5.8 98 7.4 8.9 83 ----- ----- Basin Index (%) 98 90 YELLOWSTONE Beartooth Lake 9360 11.3 9.1 124 10.6 8.4 126 Burnt Mtn 5880 3.5 1.9 184 6.1 6.4 95 Canyon 7870 6.0 4.8 125 6.6 7.2 92 Cole Creek 7850 5.7 6.0 95 4.2 6.2 68 Evening Star 9200 13.0 10.2 127 14.1 12.2 116 Fisher Creek 9100 15.0 13.7 109 14.0 13.8 101 Northeast Entrance 7350 5.6 3.3 170 8.0 5.7 140 Parker Peak 9400 11.2 9.0 124 10.8 7.9 137 Sylvan Lake 8420 7.8 8.5 92 9.9 10.4 95 Thumb Divide 7980 6.0 5.6 107 7.1 7.9 90 Two Ocean Plateau 9240 14.0 11.5 122 12.2 11.6 105 White Mill 8700 12.5 9.0 139 11.8 10.4 113 Wolverine 7650 7.2 4.3 167 7.2 5.8 124 ----- ----- Basin Index (%) 123 108 WIND RIVER Burroughs Creek 8750 7.7 5.7 135 8.7 7.1 123 Castle Creek 8400 4.8 -M * 4.8 -M * Cold Springs 9630 3.9 3.0 130 4.0 4.7 85 Deer Park 9700 5.9 6.0 98 7.5 8.0 94 Hobbs Park 10100 5.1 6.1 84 5.4 5.8 93 Kirwin 9550 6.2 4.2 148 7.1 5.2 137 Little Warm 9370 5.4 4.1 132 6.1 5.8 105 Owl Creek 8975 2.4 2.4 100 4.3 2.7 159 South Pass 9040 5.7 6.0 95 5.7 7.7 74 St. Lawrence Alt 8620 2.0 2.8 71 3.1 4.1 76 Togwotee Pass 9580 11.9 10.2 117 12.9 10.6 122 Townsend Creek 8700 2.9 3.7 78 4.6 5.6 82 ----- ----- Basin Index (%) 109 103 BIGHORN BASIN Bald Mtn. 9380 7.5 7.6 99 5.9 7.4 80 Bear Trap Meadow 8200 3.3 2.5 132 3.2 4.1 78 Bone Springs Div 9350 6.2 6.9 90 5.4 6.8 79 Grave Springs 8550 3.3 3.0 110 3.2 4.7 68 Kirwin 9550 6.2 4.2 148 7.1 5.2 137 Marquette 8760 2.8 -M * 4.1 -M * Middle Powder 7760 5.1 4.7 109 -M 5.8 * Owl Creek 8975 2.4 2.4 100 4.3 2.7 159 Powder River Pass 9480 5.2 4.3 121 6.0 5.6 107 Shell Creek 9580 5.5 6.9 80 5.5 6.2 89 Timber Creek 7950 2.9 2.0 145 4.3 3.8 113 ----- ----- Basin Index (%) 107 97 SHOSHONE RIVER Blackwater 9780 11.0 9.8 112 10.4 9.3 112 Evening Star 9200 13.0 10.2 127 14.1 12.2 116 Marquette 8760 2.8 -M * 4.1 -M * Sylvan Road 7120 6.3 4.9 129 8.6 8.4 102 Younts Peak 8350 -M 6.4 * -M 7.0 * ----- ----- Basin Index (%) 122 111 POWDER RIVER Bear Trap Meadow 8200 3.3 2.5 132 3.2 4.1 78 Cloud Peak Reservoir 9860 6.2 5.7 109 6.3 6.0 105 Grave Springs 8550 3.3 3.0 110 3.2 4.7 68 Hansen Sawmill 8360 3.8 2.7 141 4.6 3.9 118 Middle Powder 7760 5.1 4.7 109 -M 5.8 * Powder River Pass 9480 5.2 4.3 121 6.0 5.6 107 Soldier Park 8720 3.0 -M * 4.3 -M * ----- ----- Basin Index (%) 117 96 TONGUE RIVER Big Goose 7990 3.7 3.5 106 4.2 5.1 82 Bone Springs Div 9350 6.2 6.9 90 5.4 6.8 79 Burgess Junction 7880 4.7 4.4 107 4.6 5.6 82 Dome Lake 8880 3.4 5.0 68 5.1 6.4 80 Little Goose 8870 4.0 -M * 5.2 -M * Sucker Creek 8880 5.1 4.8 106 5.6 6.4 88 Tie Creek 6870 2.7 1.7 159 4.8 5.3 91 ----- ----- Basin Index (%) 98 83 BELLE FOURCHE Cole Canyon 5910 1.7 1.6 106 4.2 4.5 93 ----- ----- Basin Index (%) 106 93 CHEYENNE RIVER BASIN Blind Park 6890 2.9 2.8 104 4.6 5.7 81 North Rapid Creek 6130 3.6 2.9 124 5.2 4.7 111 ----- ----- Basin Index (%) 114 94 UPPER N. PLATTE Arapaho Ridge 10960 8.1 8.8 92 9.7 10.1 96 Blackhall Mtn 9820 10.3 -M * 13.2 -M * Columbine 9160 9.6 8.1 119 11.6 10.8 107 Divide Peak 8880 4.6 7.6 61 7.0 9.7 72 Joe Wright 10120 8.2 9.0 91 13.7 11.5 119 Laprele Creek 8375 2.8 3.6 78 3.5 5.6 62 Med Bow 10500 13.7 -M * 13.8 -M * North French Creek 10130 11.0 10.7 103 11.3 11.2 101 Never Summer 10280 8.1 8.1 100 9.0 -M * Old Battle 10000 11.2 11.8 95 11.6 15.1 77 Rawah 9020 5.9 3.9 151 8.6 7.0 123 Sage Creek Basin 7850 3.5 5.1 69 3.9 6.7 58 Sand Lake 10050 10.6 10.6 100 9.6 10.6 91 South Brush Creek 8440 4.0 4.4 91 4.9 6.8 72 Tower 10500 16.1 18.2 88 17.5 17.1 102 Webber Springs 9250 7.8 8.9 88 9.3 11.5 81 Willow Creek Pass 9540 4.8 5.1 94 6.7 6.1 110 Zirkel 9340 -M 8.8 * -M 12.5 * ----- ----- Basin Index (%) 94 92 SWEETWATER Deer Park 9700 5.9 6.0 98 7.5 8.0 94 Larsen Creek 9000 4.0 4.4 91 6.0 -M * South Pass 9040 5.7 6.0 95 5.7 7.7 74 ----- ----- Basin Index (%) 95 84 LOWER N. PLATTE Casper Mtn. 7900 4.0 5.4 74 4.2 7.1 59 Laprele Creek 8375 2.8 3.6 78 3.5 5.6 62 Reno Hill 8400 4.0 5.4 74 5.5 6.7 82 Windy Peak 7900 2.8 3.0 93 3.0 4.9 61 ----- ----- Basin Index (%) 78 67 LARAMIE RIVER Brooklyn Lake 10240 8.5 7.4 115 9.6 8.6 112 Cinnabar Park 9574 7.9 7.9 100 10.2 10.5 97 Crow Creek 8330 3.1 4.0 78 4.5 5.2 87 Deadman Hill 10220 6.9 6.8 101 7.7 7.3 105 Rawah 9020 5.9 3.9 151 8.6 7.0 123 Roach 9700 4.7 6.5 72 7.2 8.4 86 ----- ----- Basin Index (%) 101 102 S. PLATTE Black Mountain 8920 4.3 -M * 6.2 -M * Crow Creek 8330 3.1 4.0 78 4.5 5.2 87 Deadman Hill 10220 6.9 6.8 101 7.7 7.3 105 ----- ----- Basin Index (%) 93 98 LITTLE SNAKE RIVER Battle Mountain 7440 3.9 3.5 111 5.8 6.6 88 Divide Peak 8880 4.6 7.6 61 7.0 9.7 72 Elk River 8700 6.7 6.0 112 7.6 8.5 89 Little Snake River 8915 10.6 7.9 134 14.8 13.7 108 Old Battle 10000 11.2 11.8 95 11.6 15.1 77 Sage Creek Basin 7850 3.5 5.1 69 3.9 6.7 58 Sandstone RS 8150 4.7 4.1 115 5.3 8.0 66 Whiskey Park 8950 11.4 8.7 131 12.0 11.2 107 ----- ----- Basin Index (%) 103 86 UPPER GREEN RIVER Big Sandy Opening 9080 6.1 5.2 117 5.8 5.8 100 Blind Bull Sum 8650 13.6 8.3 164 10.0 8.5 118 East Rim Divide 7930 7.1 3.9 182 6.7 5.0 134 Elkhart Park G.S. 9400 6.1 5.1 120 7.1 5.9 120 Gros Ventre Summit 8750 8.1 5.5 147 6.3 5.6 112 Gunsight Pass 9820 6.9 5.2 133 7.0 5.8 121 Kendall R.S. 7740 7.3 4.3 170 7.4 5.9 125 Loomis Park 8240 9.3 5.7 163 9.7 7.4 131 New Fork Lake 8340 6.6 4.1 161 6.4 4.7 136 Pocket Creek 9360 5.9 -M * 4.5 -M * Snider Basin 8060 7.6 4.7 162 8.9 6.0 148 Spring Creek Divide 9000 13.6 8.7 156 13.6 9.9 137 Triple Peak 8500 14.1 7.6 186 15.2 10.0 152 ----- ----- Basin Index (%) 156 129 LOWER GREEN RIVER Blacks Fork Jct 8870 2.6 -M * 4.6 -M * Buck Pasture 9700 5.4 -M * 7.1 -M * EF Blacks Fork GS 9360 3.6 -M * 4.9 -M * Hams Fork 7840 5.7 4.1 139 5.3 4.8 110 Hewinta 9519 3.2 3.4 94 5.1 6.1 84 Hickerson Park 9145 3.5 2.5 140 4.1 4.7 87 Hole-in-Rock 9150 2.5 2.8 89 3.7 4.4 84 Indian Creek 9425 9.9 9.6 103 10.4 9.0 116 Kelley R.S. 8180 7.0 5.7 123 7.6 7.7 99 Spirit Lk 10235 4.1 -M * 5.7 -M * Steel Creek Park 10200 4.7 5.9 80 6.1 7.1 86 ----- ----- Basin Index (%) 107 97 UPPER BEAR RIVER Bear River RS 8777 2.8 -M * 3.8 -M * Bug Lake 7950 7.2 5.8 124 6.7 8.3 81 Burts Miller Ranch 8000 2.2 -M * 1.7 -M * Chalk Creek #1 8993 7.2 9.4 77 7.6 10.8 70 Hayden Fork 9212 4.7 5.0 94 7.5 8.9 84 Kelley R.S. 8180 7.0 5.7 123 7.6 7.7 99 Lily Lake 9156 4.0 4.8 83 4.9 7.6 64 Monte Cristo 8960 10.3 9.3 111 9.9 10.8 92 Salt River Summit 7760 5.8 4.3 135 7.5 6.8 110 ----- ----- Basin Index (%) 104 85 ----------------------------------------------------------------------------- -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.