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 SUNDAY: DECEMBER 28 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 8.1 6.8 119 9.3 9.4 99 Black Bear 8170 14.7 16.5 89 15.8 16.8 94 Blind Bull Sum 8650 13.7 8.6 159 10.0 8.8 114 Cottonwood Creek 7670 11.3 7.9 143 13.7 10.5 130 East Rim Divide 7930 7.2 4.1 176 6.7 5.2 129 Grand Targhee 9260 18.7 16.9 111 15.8 14.4 110 Granite Creek 6770 10.3 5.8 178 10.9 8.8 124 Grassy Lake 7265 13.6 11.7 116 14.6 15.9 92 Gros Ventre Summit 8750 8.1 5.7 142 6.3 5.8 109 Gunsight Pass 9820 6.9 5.6 123 6.9 6.0 115 Lewis Lake Divide 7850 12.9 12.4 104 15.5 15.8 98 Phillips Bench 8200 12.2 10.1 121 13.7 12.0 114 Salt River Summit 7760 5.9 4.5 131 7.6 7.0 109 Snake River Station 6920 9.2 5.8 159 11.0 10.3 107 Spring Creek Divide 9000 13.6 9.2 148 13.5 10.2 132 Thumb Divide 7980 6.2 5.8 107 7.3 8.2 89 Togwotee Pass 9580 11.9 10.4 114 12.9 10.8 119 Two Ocean Plateau 9240 14.1 11.8 119 12.4 12.0 103 Willow Creek 8380 12.3 10.0 123 15.5 14.8 105 Younts Peak 8350 -M 6.7 * -M 7.2 * ----- ----- Basin Index (%) 124 108 MADISON-GALLATIN Black Bear 8170 14.7 16.5 89 15.8 16.8 94 Canyon 7870 6.1 5.0 122 6.8 7.4 92 Madison Plateau 7750 9.5 9.8 97 10.0 11.5 87 West Yellowstone 6700 4.3 4.3 100 5.7 6.6 86 Whiskey Creek 6800 6.0 6.0 100 7.5 9.1 82 ----- ----- Basin Index (%) 98 89 YELLOWSTONE Beartooth Lake 9360 11.4 9.4 121 10.8 8.7 124 Burnt Mtn 5880 3.5 1.9 184 6.2 6.6 94 Canyon 7870 6.1 5.0 122 6.8 7.4 92 Cole Creek 7850 5.7 6.1 93 4.4 6.3 70 Evening Star 9200 13.2 10.6 125 14.2 12.5 114 Fisher Creek 9100 15.3 14.0 109 14.2 14.2 100 Northeast Entrance 7350 5.7 3.6 158 8.1 5.8 140 Parker Peak 9400 11.4 9.3 123 11.0 8.1 136 Sylvan Lake 8420 8.0 8.8 91 10.1 10.6 95 Thumb Divide 7980 6.2 5.8 107 7.3 8.2 89 Two Ocean Plateau 9240 14.1 11.8 119 12.4 12.0 103 White Mill 8700 12.7 9.3 137 12.0 10.7 112 Wolverine 7650 7.2 4.4 164 7.5 6.0 125 ----- ----- Basin Index (%) 120 107 WIND RIVER Burroughs Creek 8750 7.7 5.9 131 8.8 7.3 121 Castle Creek 8400 4.8 -M * 4.7 -M * Cold Springs 9630 4.0 3.0 133 4.1 4.8 85 Deer Park 9700 5.9 6.4 92 7.6 8.2 93 Hobbs Park 10100 5.2 6.2 84 5.7 6.0 95 Kirwin 9550 6.3 4.2 150 7.2 5.3 136 Little Warm 9370 5.5 4.2 131 6.3 5.9 107 Owl Creek 8975 2.5 2.4 104 4.4 2.8 157 South Pass 9040 5.7 6.2 92 6.1 7.9 77 St. Lawrence Alt 8620 1.9 2.9 66 3.1 4.2 74 Togwotee Pass 9580 11.9 10.4 114 12.9 10.8 119 Townsend Creek 8700 2.9 3.8 76 4.8 5.6 86 ----- ----- Basin Index (%) 107 103 BIGHORN BASIN Bald Mtn. 9380 7.6 7.8 97 5.9 7.6 78 Bear Trap Meadow 8200 3.4 2.5 136 3.4 4.1 83 Bone Springs Div 9350 6.2 7.0 89 5.4 6.9 78 Grave Springs 8550 3.3 3.1 106 3.3 4.9 67 Kirwin 9550 6.3 4.2 150 7.2 5.3 136 Marquette 8760 2.9 -M * 4.4 -M * Middle Powder 7760 5.1 4.7 109 -M 5.9 * Owl Creek 8975 2.5 2.4 104 4.4 2.8 157 Powder River Pass 9480 5.3 4.5 118 6.1 5.7 107 Shell Creek 9580 5.5 7.0 79 5.6 6.3 89 Timber Creek 7950 2.9 2.1 138 4.4 3.8 116 ----- ----- Basin Index (%) 106 96 SHOSHONE RIVER Blackwater 9780 11.0 10.1 109 10.6 9.5 112 Evening Star 9200 13.2 10.6 125 14.2 12.5 114 Marquette 8760 2.9 -M * 4.4 -M * Sylvan Road 7120 6.4 5.0 128 8.8 8.6 102 Younts Peak 8350 -M 6.7 * -M 7.2 * ----- ----- Basin Index (%) 119 110 POWDER RIVER Bear Trap Meadow 8200 3.4 2.5 136 3.4 4.1 83 Cloud Peak Reservoir 9860 6.1 5.9 103 6.3 6.1 103 Grave Springs 8550 3.3 3.1 106 3.3 4.9 67 Hansen Sawmill 8360 3.7 2.8 132 4.6 4.0 115 Middle Powder 7760 5.1 4.7 109 -M 5.9 * Powder River Pass 9480 5.3 4.5 118 6.1 5.7 107 Soldier Park 8720 2.8 -M * 4.3 -M * ----- ----- Basin Index (%) 114 96 TONGUE RIVER Big Goose 7990 3.7 3.5 106 4.3 5.2 83 Bone Springs Div 9350 6.2 7.0 89 5.4 6.9 78 Burgess Junction 7880 4.7 4.5 104 4.7 5.7 82 Dome Lake 8880 3.4 5.1 67 5.2 6.5 80 Little Goose 8870 4.0 -M * 5.2 -M * Sucker Creek 8880 5.2 4.9 106 5.7 6.5 88 Tie Creek 6870 2.8 1.8 156 4.9 5.4 91 ----- ----- Basin Index (%) 97 83 BELLE FOURCHE Cole Canyon 5910 1.7 1.9 89 4.3 4.5 96 ----- ----- Basin Index (%) 89 96 CHEYENNE RIVER BASIN Blind Park 6890 2.7 3.0 90 4.5 5.8 78 North Rapid Creek 6130 3.5 3.0 117 5.1 4.8 106 ----- ----- Basin Index (%) 103 91 UPPER N. PLATTE Arapaho Ridge 10960 8.2 9.0 91 9.8 10.4 94 Blackhall Mtn 9820 10.2 -M * 13.2 -M * Columbine 9160 9.6 8.3 116 11.5 11.1 104 Divide Peak 8880 4.6 8.0 58 7.1 9.9 72 Joe Wright 10120 8.4 9.1 92 13.9 11.7 119 Laprele Creek 8375 2.9 3.8 76 3.6 5.8 62 Med Bow 10500 13.7 -M * 13.8 -M * North French Creek 10130 11.0 11.0 100 11.3 11.5 98 Never Summer 10280 8.2 8.3 99 9.1 -M * Old Battle 10000 11.2 12.1 93 11.6 15.6 74 Rawah 9020 6.1 4.0 152 8.8 7.0 126 Sage Creek Basin 7850 3.6 5.4 67 4.1 6.9 59 Sand Lake 10050 10.8 11.0 98 9.6 10.8 89 South Brush Creek 8440 4.0 4.4 91 4.8 6.9 70 Tower 10500 16.2 18.3 89 17.4 17.6 99 Webber Springs 9250 7.9 9.1 87 9.4 11.8 80 Willow Creek Pass 9540 4.9 5.3 92 6.7 6.3 106 Zirkel 9340 -M 9.2 * -M 12.7 * ----- ----- Basin Index (%) 93 90 SWEETWATER Deer Park 9700 5.9 6.4 92 7.6 8.2 93 Larsen Creek 9000 4.0 4.6 87 5.9 -M * South Pass 9040 5.7 6.2 92 6.1 7.9 77 ----- ----- Basin Index (%) 91 85 LOWER N. PLATTE Casper Mtn. 7900 4.1 5.5 75 4.3 7.2 60 Laprele Creek 8375 2.9 3.8 76 3.6 5.8 62 Reno Hill 8400 4.1 5.6 73 5.6 6.9 81 Windy Peak 7900 2.8 3.0 93 3.1 5.0 62 ----- ----- Basin Index (%) 78 67 LARAMIE RIVER Brooklyn Lake 10240 8.7 7.5 116 9.7 8.8 110 Cinnabar Park 9574 7.8 8.3 94 10.2 10.7 95 Crow Creek 8330 3.6 4.1 88 4.8 5.3 91 Deadman Hill 10220 7.0 7.0 100 7.9 7.5 105 Rawah 9020 6.1 4.0 152 8.8 7.0 126 Roach 9700 5.0 6.7 75 7.4 8.6 86 ----- ----- Basin Index (%) 102 102 S. PLATTE Black Mountain 8920 4.5 -M * 6.4 -M * Crow Creek 8330 3.6 4.1 88 4.8 5.3 91 Deadman Hill 10220 7.0 7.0 100 7.9 7.5 105 ----- ----- Basin Index (%) 95 99 LITTLE SNAKE RIVER Battle Mountain 7440 4.1 3.6 114 5.9 6.7 88 Divide Peak 8880 4.6 8.0 58 7.1 9.9 72 Elk River 8700 6.8 6.2 110 7.7 8.7 89 Little Snake River 8915 10.4 8.4 124 14.8 13.9 106 Old Battle 10000 11.2 12.1 93 11.6 15.6 74 Sage Creek Basin 7850 3.6 5.4 67 4.1 6.9 59 Sandstone RS 8150 4.8 4.2 114 5.5 8.2 67 Whiskey Park 8950 11.4 9.0 127 11.6 11.4 102 ----- ----- Basin Index (%) 100 84 UPPER GREEN RIVER Big Sandy Opening 9080 6.1 5.4 113 5.9 5.9 100 Blind Bull Sum 8650 13.7 8.6 159 10.0 8.8 114 East Rim Divide 7930 7.2 4.1 176 6.7 5.2 129 Elkhart Park G.S. 9400 6.1 5.4 113 7.1 6.1 116 Gros Ventre Summit 8750 8.1 5.7 142 6.3 5.8 109 Gunsight Pass 9820 6.9 5.6 123 6.9 6.0 115 Kendall R.S. 7740 7.3 4.5 162 7.2 6.1 118 Loomis Park 8240 9.3 6.0 155 9.7 7.6 128 New Fork Lake 8340 6.6 4.3 153 6.4 4.9 131 Pocket Creek 9360 5.8 -M * 4.5 -M * Snider Basin 8060 7.6 4.8 158 8.8 6.2 142 Spring Creek Divide 9000 13.6 9.2 148 13.5 10.2 132 Triple Peak 8500 14.1 7.8 181 15.2 10.3 148 ----- ----- Basin Index (%) 149 125 LOWER GREEN RIVER Blacks Fork Jct 8870 2.8 -M * 4.7 -M * Buck Pasture 9700 5.6 -M * 7.2 -M * EF Blacks Fork GS 9360 3.7 -M * 5.0 -M * Hams Fork 7840 5.7 4.3 133 5.3 4.9 108 Hewinta 9519 3.1 3.5 89 5.3 6.2 85 Hickerson Park 9145 3.6 2.6 138 4.2 4.8 88 Hole-in-Rock 9150 2.6 2.9 90 3.8 4.5 84 Indian Creek 9425 10.0 9.8 102 10.5 9.2 114 Kelley R.S. 8180 7.1 5.9 120 7.6 7.9 96 Spirit Lk 10235 4.2 -M * 5.8 -M * Steel Creek Park 10200 4.8 6.0 80 6.2 7.2 86 ----- ----- Basin Index (%) 105 96 UPPER BEAR RIVER Bear River RS 8777 2.9 -M * 3.9 -M * Bug Lake 7950 7.3 6.0 122 6.7 8.5 79 Burts Miller Ranch 8000 2.3 -M * 1.8 -M * Chalk Creek #1 8993 7.3 9.5 77 7.7 11.0 70 Hayden Fork 9212 4.7 5.3 89 7.7 9.1 85 Kelley R.S. 8180 7.1 5.9 120 7.6 7.9 96 Lily Lake 9156 4.2 4.9 86 5.1 7.7 66 Monte Cristo 8960 10.5 9.6 109 9.9 11.1 89 Salt River Summit 7760 5.9 4.5 131 7.6 7.0 109 ----- ----- Basin Index (%) 103 84 ----------------------------------------------------------------------------- -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.