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 THURSDAY: DECEMBER 25 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 7.9 6.5 122 8.9 9.0 99 Black Bear 8170 13.7 15.5 88 15.2 16.0 95 Blind Bull Sum 8650 13.2 8.2 161 9.6 8.4 114 Cottonwood Creek 7670 10.8 7.6 142 13.2 10.1 131 East Rim Divide 7930 6.6 3.8 174 6.2 4.9 127 Grand Targhee 9260 18.0 15.9 113 15.6 13.7 114 Granite Creek 6770 10.0 5.3 189 10.5 8.3 127 Grassy Lake 7265 13.1 10.9 120 14.1 15.1 93 Gros Ventre Summit 8750 7.9 5.3 149 6.2 5.5 113 Gunsight Pass 9820 6.8 5.0 136 7.0 5.7 123 Lewis Lake Divide 7850 12.4 11.4 109 14.8 15.0 99 Phillips Bench 8200 11.9 9.5 125 13.2 11.4 116 Salt River Summit 7760 5.4 4.2 129 7.2 6.7 107 Snake River Station 6920 8.8 5.5 160 10.6 9.9 107 Spring Creek Divide 9000 13.3 8.5 156 13.3 9.7 137 Thumb Divide 7980 5.7 5.5 104 6.9 7.8 88 Togwotee Pass 9580 11.5 10.1 114 12.6 10.5 120 Two Ocean Plateau 9240 13.7 11.3 121 12.2 11.5 106 Willow Creek 8380 11.6 9.6 121 14.6 14.1 104 Younts Peak 8350 -M 6.2 * -M 6.9 * ----- ----- Basin Index (%) 127 110 MADISON-GALLATIN Black Bear 8170 13.7 15.5 88 15.2 16.0 95 Canyon 7870 5.8 4.8 121 6.5 7.1 92 Madison Plateau 7750 8.8 9.3 95 9.6 10.9 88 West Yellowstone 6700 4.2 4.0 105 5.4 6.2 87 Whiskey Creek 6800 5.7 5.8 98 7.1 8.8 81 ----- ----- Basin Index (%) 97 89 YELLOWSTONE Beartooth Lake 9360 11.4 9.0 127 10.8 8.2 132 Burnt Mtn 5880 2.7 1.9 142 5.4 6.4 84 Canyon 7870 5.8 4.8 121 6.5 7.1 92 Cole Creek 7850 4.6 5.9 78 3.6 6.2 58 Evening Star 9200 12.8 10.1 127 13.7 12.0 114 Fisher Creek 9100 15.1 13.6 111 14.1 13.6 104 Northeast Entrance 7350 5.5 3.2 172 8.1 5.7 142 Parker Peak 9400 11.1 8.8 126 10.7 7.8 137 Sylvan Lake 8420 7.4 8.4 88 9.7 10.3 94 Thumb Divide 7980 5.7 5.5 104 6.9 7.8 88 Two Ocean Plateau 9240 13.7 11.3 121 12.2 11.5 106 White Mill 8700 12.4 8.9 139 12.0 10.3 117 Wolverine 7650 7.1 4.2 169 7.4 5.7 130 ----- ----- Basin Index (%) 121 108 WIND RIVER Burroughs Creek 8750 7.4 5.6 132 8.6 7.0 123 Castle Creek 8400 4.8 -M * 5.0 -M * Cold Springs 9630 3.5 3.0 117 4.0 4.6 87 Deer Park 9700 5.4 5.7 95 7.1 7.8 91 Hobbs Park 10100 4.7 6.1 77 5.2 5.8 90 Kirwin 9550 5.8 4.2 138 6.9 5.2 133 Little Warm 9370 4.9 4.1 120 6.0 5.7 105 Owl Creek 8975 2.2 2.3 96 4.1 2.7 152 South Pass 9040 5.2 5.8 90 5.3 7.6 70 St. Lawrence Alt 8620 1.6 2.8 57 2.7 4.1 66 Togwotee Pass 9580 11.5 10.1 114 12.6 10.5 120 Townsend Creek 8700 2.4 3.6 67 4.3 5.5 78 ----- ----- Basin Index (%) 102 100 BIGHORN BASIN Bald Mtn. 9380 6.9 7.5 92 5.8 7.3 79 Bear Trap Meadow 8200 3.2 2.4 133 3.2 4.0 80 Bone Springs Div 9350 5.8 6.9 84 5.4 6.6 82 Grave Springs 8550 3.1 3.0 103 2.9 4.7 62 Kirwin 9550 5.8 4.2 138 6.9 5.2 133 Marquette 8760 1.9 -M * 3.3 -M * Middle Powder 7760 4.8 4.6 104 -M 5.8 * Owl Creek 8975 2.2 2.3 96 4.1 2.7 152 Powder River Pass 9480 5.1 4.2 121 6.0 5.5 109 Shell Creek 9580 5.4 6.8 79 5.2 6.1 85 Timber Creek 7950 2.4 2.0 120 3.9 3.8 103 ----- ----- Basin Index (%) 102 95 SHOSHONE RIVER Blackwater 9780 10.7 9.7 110 10.1 9.2 110 Evening Star 9200 12.8 10.1 127 13.7 12.0 114 Marquette 8760 1.9 -M * 3.3 -M * Sylvan Road 7120 6.1 4.8 127 8.5 8.3 102 Younts Peak 8350 -M 6.2 * -M 6.9 * ----- ----- Basin Index (%) 120 109 POWDER RIVER Bear Trap Meadow 8200 3.2 2.4 133 3.2 4.0 80 Cloud Peak Reservoir 9860 5.9 5.6 105 6.3 5.9 107 Grave Springs 8550 3.1 3.0 103 2.9 4.7 62 Hansen Sawmill 8360 3.5 2.7 130 4.4 3.8 116 Middle Powder 7760 4.8 4.6 104 -M 5.8 * Powder River Pass 9480 5.1 4.2 121 6.0 5.5 109 Soldier Park 8720 2.9 -M * 4.1 -M * ----- ----- Basin Index (%) 114 95 TONGUE RIVER Big Goose 7990 3.5 3.4 103 4.0 5.1 78 Bone Springs Div 9350 5.8 6.9 84 5.4 6.6 82 Burgess Junction 7880 4.4 4.3 102 4.5 5.6 80 Dome Lake 8880 3.1 4.9 63 4.8 6.4 75 Little Goose 8870 3.6 -M * 5.0 -M * Sucker Creek 8880 4.8 4.7 102 5.5 6.4 86 Tie Creek 6870 2.2 1.6 138 4.4 5.3 83 ----- ----- Basin Index (%) 92 81 BELLE FOURCHE Cole Canyon 5910 1.8 1.5 120 4.1 4.4 93 ----- ----- Basin Index (%) 120 93 CHEYENNE RIVER BASIN Blind Park 6890 2.9 2.7 107 4.6 5.6 82 North Rapid Creek 6130 3.6 2.8 129 5.2 4.7 111 ----- ----- Basin Index (%) 118 95 UPPER N. PLATTE Arapaho Ridge 10960 7.9 8.7 91 9.4 10.0 94 Blackhall Mtn 9820 9.8 -M * 12.7 -M * Columbine 9160 9.3 8.0 116 11.3 10.7 106 Divide Peak 8880 4.0 7.5 53 6.3 9.5 66 Joe Wright 10120 7.9 8.9 89 13.3 11.4 117 Laprele Creek 8375 2.4 3.6 67 3.0 5.6 54 Med Bow 10500 13.3 -M * 13.6 -M * North French Creek 10130 10.7 10.6 101 11.1 11.1 100 Never Summer 10280 7.7 8.0 96 8.5 -M * Old Battle 10000 10.5 11.7 90 11.1 14.9 74 Rawah 9020 5.4 3.9 138 8.4 6.8 124 Sage Creek Basin 7850 2.7 5.1 53 3.8 6.6 58 Sand Lake 10050 10.3 10.5 98 9.4 10.4 90 South Brush Creek 8440 3.7 4.3 86 4.7 6.7 70 Tower 10500 15.6 18.2 86 17.2 16.9 102 Webber Springs 9250 7.1 8.8 81 8.7 11.4 76 Willow Creek Pass 9540 4.2 5.1 82 6.1 6.1 100 Zirkel 9340 -M 8.6 * -M 12.4 * ----- ----- Basin Index (%) 89 90 SWEETWATER Deer Park 9700 5.4 5.7 95 7.1 7.8 91 Larsen Creek 9000 4.1 4.4 93 5.9 -M * South Pass 9040 5.2 5.8 90 5.3 7.6 70 ----- ----- Basin Index (%) 92 81 LOWER N. PLATTE Casper Mtn. 7900 3.1 5.4 57 3.8 7.0 54 Laprele Creek 8375 2.4 3.6 67 3.0 5.6 54 Reno Hill 8400 3.6 5.4 67 5.1 6.6 77 Windy Peak 7900 2.3 2.9 79 2.5 4.8 52 ----- ----- Basin Index (%) 66 60 LARAMIE RIVER Brooklyn Lake 10240 8.2 7.3 112 9.1 8.5 107 Cinnabar Park 9574 7.3 7.8 94 9.7 10.3 94 Crow Creek 8330 2.5 3.9 64 4.0 5.1 78 Deadman Hill 10220 6.5 6.8 96 7.4 7.3 101 Rawah 9020 5.4 3.9 138 8.4 6.8 124 Roach 9700 4.1 6.4 64 6.6 8.3 80 ----- ----- Basin Index (%) 94 98 S. PLATTE Black Mountain 8920 3.8 -M * 5.7 -M * Crow Creek 8330 2.5 3.9 64 4.0 5.1 78 Deadman Hill 10220 6.5 6.8 96 7.4 7.3 101 ----- ----- Basin Index (%) 84 92 LITTLE SNAKE RIVER Battle Mountain 7440 3.5 3.4 103 5.5 6.5 85 Divide Peak 8880 4.0 7.5 53 6.3 9.5 66 Elk River 8700 6.2 5.9 105 7.5 8.3 90 Little Snake River 8915 10.0 7.7 130 14.2 13.5 105 Old Battle 10000 10.5 11.7 90 11.1 14.9 74 Sage Creek Basin 7850 2.7 5.1 53 3.8 6.6 58 Sandstone RS 8150 4.1 4.1 100 4.9 7.9 62 Whiskey Park 8950 10.8 8.6 126 11.7 11.0 106 ----- ----- Basin Index (%) 96 83 UPPER GREEN RIVER Big Sandy Opening 9080 5.9 5.1 116 5.6 5.7 98 Blind Bull Sum 8650 13.2 8.2 161 9.6 8.4 114 East Rim Divide 7930 6.6 3.8 174 6.2 4.9 127 Elkhart Park G.S. 9400 5.9 4.9 120 6.8 5.8 117 Gros Ventre Summit 8750 7.9 5.3 149 6.2 5.5 113 Gunsight Pass 9820 6.8 5.0 136 7.0 5.7 123 Kendall R.S. 7740 6.8 4.3 158 7.0 5.8 121 Loomis Park 8240 8.9 5.6 159 9.2 7.2 128 New Fork Lake 8340 6.3 4.0 158 5.9 4.6 128 Pocket Creek 9360 5.6 -M * 4.3 -M * Snider Basin 8060 7.4 4.6 161 8.7 5.9 147 Spring Creek Divide 9000 13.3 8.5 156 13.3 9.7 137 Triple Peak 8500 13.9 7.6 183 15.1 9.9 153 ----- ----- Basin Index (%) 154 127 LOWER GREEN RIVER Blacks Fork Jct 8870 2.8 -M * 4.5 -M * Buck Pasture 9700 5.4 -M * 6.9 -M * EF Blacks Fork GS 9360 3.6 -M * 4.6 -M * Hams Fork 7840 5.5 4.0 138 5.2 4.7 111 Hewinta 9519 3.1 3.3 94 5.0 6.1 82 Hickerson Park 9145 3.2 2.4 133 3.9 4.7 83 Hole-in-Rock 9150 2.4 2.8 86 3.4 4.4 77 Indian Creek 9425 9.6 9.5 101 10.4 8.8 118 Kelley R.S. 8180 6.7 5.6 120 7.5 7.5 100 Spirit Lk 10235 3.8 -M * 5.4 -M * Steel Creek Park 10200 4.7 5.8 81 5.9 7.0 84 ----- ----- Basin Index (%) 105 96 UPPER BEAR RIVER Bear River RS 8777 2.7 -M * 3.7 -M * Bug Lake 7950 6.8 5.8 117 6.3 8.2 77 Burts Miller Ranch 8000 2.1 -M * 1.7 -M * Chalk Creek #1 8993 6.7 9.4 71 7.0 10.7 65 Hayden Fork 9212 4.6 4.8 96 7.4 8.8 84 Kelley R.S. 8180 6.7 5.6 120 7.5 7.5 100 Lily Lake 9156 3.9 4.7 83 4.7 7.5 63 Monte Cristo 8960 9.7 9.1 107 9.2 10.7 86 Salt River Summit 7760 5.4 4.2 129 7.2 6.7 107 ----- ----- Basin Index (%) 100 82 ----------------------------------------------------------------------------- -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.