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: MARCH 10 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 27.1 13.8 196 -M 18.2 * Black Bear 8170 41.8 31.3 134 46.7 32.9 142 Blind Bull Sum 8650 40.0 19.3 207 -M 16.8 * Cottonwood Creek 7670 26.8 18.4 146 33.8 20.7 163 East Rim Divide 7930 18.6 9.4 198 19.7 10.2 193 Grand Targhee 9260 39.1 31.7 123 -M 25.5 * Granite Creek 6770 29.9 14.6 205 -M 17.5 * Grassy Lake 7265 35.5 27.5 129 49.0 31.1 158 Gros Ventre Summit 8750 17.9 10.8 166 21.9 10.8 203 Gunsight Pass 9820 19.3 11.5 168 21.9 11.6 189 Lewis Lake Divide 7850 37.0 26.3 141 -M 30.6 * Phillips Bench 8200 34.2 21.1 162 39.5 24.1 164 Salt River Summit 7760 20.2 11.1 182 -M 14.2 * Snake River Station 6920 21.8 15.1 144 32.1 19.6 164 Spring Creek Divide 9000 35.9 19.6 183 -M 20.3 * Thumb Divide 7980 21.5 13.1 164 -M 15.7 * Togwotee Pass 9580 29.8 19.4 154 34.0 20.6 165 Two Ocean Plateau 9240 -M 22.9 * -M 23.2 * Willow Creek 8380 29.7 24.1 123 44.4 28.3 157 Younts Peak 8350 26.0 12.3 211 27.9 13.4 208 ----- ----- Basin Index (%) 158 166 MADISON-GALLATIN Black Bear 8170 41.8 31.3 134 46.7 32.9 142 Canyon 7870 16.7 11.4 146 22.9 13.9 165 Madison Plateau 7750 24.8 19.2 129 32.3 22.7 142 West Yellowstone 6700 12.4 9.6 129 20.7 12.4 167 Whiskey Creek 6800 15.2 13.1 116 23.8 17.3 138 ----- ----- Basin Index (%) 131 148 YELLOWSTONE Beartooth Lake 9360 28.4 18.2 156 23.9 16.7 143 Burnt Mtn 5880 6.0 4.4 136 11.9 10.2 117 Canyon 7870 16.7 11.4 146 22.9 13.9 165 Cole Creek 7850 9.3 11.1 84 6.5 9.8 66 Evening Star 9200 33.6 20.8 162 34.4 23.3 148 Fisher Creek 9100 37.4 26.9 139 40.8 27.0 151 Northeast Entrance 7350 12.1 8.6 141 17.4 10.5 166 Parker Peak 9400 29.2 16.6 176 23.7 14.9 159 Sylvan Lake 8420 22.0 16.9 130 33.3 19.0 175 Thumb Divide 7980 21.5 13.1 164 -M 15.7 * Two Ocean Plateau 9240 -M 22.9 * -M 23.2 * White Mill 8700 29.7 19.1 155 30.7 20.2 152 Wolverine 7650 13.3 9.0 148 18.8 10.5 179 ----- ----- Basin Index (%) 147 150 WIND RIVER Burroughs Creek 8750 22.3 -M * 24.2 -M * Castle Creek 8400 12.0 -M * 14.3 -M * Cold Springs 9630 12.5 5.9 212 14.8 8.0 185 Deer Park 9700 28.3 12.0 236 30.9 16.2 191 Hobbs Park 10100 22.3 10.9 205 20.4 10.3 198 Kirwin 9550 17.8 7.7 231 20.5 9.4 218 Little Warm 9370 15.4 8.6 179 20.9 10.5 199 Owl Creek 8975 7.0 4.3 163 8.8 4.6 191 South Pass 9040 26.2 12.5 210 23.5 14.4 163 St. Lawrence Alt 8620 7.1 5.8 122 12.0 7.0 171 Togwotee Pass 9580 29.8 19.4 154 34.0 20.6 165 Townsend Creek 8700 12.5 7.4 169 15.7 9.3 169 ----- ----- Basin Index (%) 189 183 BIGHORN BASIN Bald Mtn. 9380 16.4 15.9 103 14.2 13.9 102 Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92 Bone Springs Div 9350 14.8 13.3 111 14.1 12.5 113 Grave Springs 8550 5.8 7.4 78 6.2 8.3 75 Kirwin 9550 17.8 7.7 231 20.5 9.4 218 Marquette 8760 7.6 -M * 11.8 -M * Middle Powder 7760 6.6 8.8 75 6.1 9.2 66 Owl Creek 8975 7.0 4.3 163 8.8 4.6 191 Powder River Pass 9480 6.8 8.4 81 9.9 10.1 98 Shell Creek 9580 13.8 12.2 113 10.9 11.1 98 Timber Creek 7950 5.4 4.0 135 6.8 5.5 124 ----- ----- Basin Index (%) 115 114 SHOSHONE RIVER Blackwater 9780 33.4 19.0 176 36.1 17.2 210 Evening Star 9200 33.6 20.8 162 34.4 23.3 148 Marquette 8760 7.6 -M * 11.8 -M * Sylvan Road 7120 15.7 10.0 157 27.3 14.6 187 Younts Peak 8350 26.0 12.3 211 27.9 13.4 208 ----- ----- Basin Index (%) 175 184 POWDER RIVER Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92 Cloud Peak Reservoir 9860 11.1 11.7 95 12.3 10.3 119 Grave Springs 8550 5.8 7.4 78 6.2 8.3 75 Hansen Sawmill 8360 7.1 5.1 139 9.0 6.5 138 Middle Powder 7760 6.6 8.8 75 6.1 9.2 66 Powder River Pass 9480 6.8 8.4 81 9.9 10.1 98 Soldier Park 8720 11.0 -M * 8.9 -M * ----- ----- Basin Index (%) 92 97 TONGUE RIVER Big Goose 7990 8.0 6.8 118 9.0 8.4 107 Bone Springs Div 9350 14.8 13.3 111 14.1 12.5 113 Burgess Junction 7880 8.2 9.2 89 8.7 9.6 91 Dome Lake 8880 11.9 9.3 128 11.5 10.6 108 Little Goose 8870 8.8 -M * 11.2 -M * Sucker Creek 8880 9.6 10.0 96 9.4 11.3 83 Tie Creek 6870 5.5 4.7 117 9.5 9.0 106 ----- ----- Basin Index (%) 109 101 BELLE FOURCHE Cole Canyon 5910 3.1 5.0 62 5.8 7.4 78 ----- ----- Basin Index (%) 62 78 CHEYENNE RIVER BASIN Blind Park 6890 4.0 6.7 60 7.0 9.9 71 North Rapid Creek 6130 4.6 6.2 74 5.8 8.1 72 ----- ----- Basin Index (%) 67 71 UPPER N. PLATTE Arapaho Ridge 10960 23.4 17.6 133 23.5 18.7 126 Blackhall Mtn 9820 34.4 -M * -M -M * Columbine 9160 24.4 21.0 116 25.6 21.6 119 Divide Peak 8880 18.7 16.9 111 20.8 17.9 116 Joe Wright 10120 17.9 18.3 98 25.6 21.3 120 Laprele Creek 8375 11.1 8.4 132 10.3 10.0 103 Med Bow 10500 35.3 -M * 30.8 -M * North French Creek 10130 23.2 22.8 102 24.0 22.3 108 Never Summer 10280 21.1 16.9 125 17.1 -M * Old Battle 10000 34.9 25.4 137 35.6 29.6 120 Rawah 9020 11.8 9.2 128 15.0 11.5 130 Sage Creek Basin 7850 15.6 11.5 136 15.2 12.3 124 Sand Lake 10050 27.2 22.4 121 24.9 20.2 123 South Brush Creek 8440 10.6 11.1 95 11.2 12.5 90 Tower 10500 39.0 38.0 103 41.4 33.8 122 Webber Springs 9250 28.0 20.1 139 31.3 22.4 140 Willow Creek Pass 9540 16.2 10.3 157 17.1 10.9 157 Zirkel 9340 39.7 25.2 158 39.7 24.5 162 ----- ----- Basin Index (%) 123 125 SWEETWATER Deer Park 9700 28.3 12.0 236 30.9 16.2 191 Larsen Creek 9000 19.3 10.3 187 21.1 -M * South Pass 9040 26.2 12.5 210 23.5 14.4 163 ----- ----- Basin Index (%) 212 178 LOWER N. PLATTE Casper Mtn. 7900 10.8 11.4 95 10.2 11.8 86 Laprele Creek 8375 11.1 8.4 132 10.3 10.0 103 Reno Hill 8400 10.9 11.2 97 11.4 12.0 95 Windy Peak 7900 9.7 6.5 149 9.9 8.4 118 ----- ----- Basin Index (%) 113 99 LARAMIE RIVER Brooklyn Lake 10240 23.1 16.7 138 20.7 17.3 120 Cinnabar Park 9574 17.8 17.8 100 20.2 20.6 98 Crow Creek 8330 4.7 7.1 66 7.6 8.4 90 Deadman Hill 10220 19.0 12.9 147 18.1 13.8 131 Rawah 9020 11.8 9.2 128 15.0 11.5 130 Roach 9700 15.3 13.3 115 18.2 15.8 115 ----- ----- Basin Index (%) 119 114 S. PLATTE Black Mountain 8920 9.4 -M * 10.5 -M * Crow Creek 8330 4.7 7.1 66 7.6 8.4 90 Deadman Hill 10220 19.0 12.9 147 18.1 13.8 131 ----- ----- Basin Index (%) 118 116 LITTLE SNAKE RIVER Battle Mountain 7440 10.9 10.5 104 15.2 12.8 119 Divide Peak 8880 18.7 16.9 111 20.8 17.9 116 Elk River 8700 20.4 16.8 121 19.0 17.0 112 Little Snake River 8915 31.0 20.3 153 35.2 25.7 137 Old Battle 10000 34.9 25.4 137 35.6 29.6 120 Sage Creek Basin 7850 15.6 11.5 136 15.2 12.3 124 Sandstone RS 8150 11.8 11.8 100 15.1 15.9 95 Whiskey Park 8950 26.5 23.2 114 27.8 23.8 117 ----- ----- Basin Index (%) 124 119 UPPER GREEN RIVER Big Sandy Opening 9080 19.9 10.7 186 21.1 11.1 190 Blind Bull Sum 8650 40.0 19.3 207 -M 16.8 * East Rim Divide 7930 18.6 9.4 198 19.7 10.2 193 Elkhart Park G.S. 9400 17.6 10.0 176 21.7 11.1 195 Gros Ventre Summit 8750 17.9 10.8 166 21.9 10.8 203 Gunsight Pass 9820 19.3 11.5 168 21.9 11.6 189 Kendall R.S. 7740 23.2 10.5 221 27.2 12.5 218 Loomis Park 8240 26.6 12.6 211 29.6 14.9 199 New Fork Lake 8340 16.1 9.0 179 16.0 9.3 172 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 20.2 10.6 191 25.2 12.1 208 Spring Creek Divide 9000 35.9 19.6 183 -M 20.3 * Triple Peak 8500 35.0 18.5 189 37.1 21.5 173 ----- ----- Basin Index (%) 190 193 LOWER GREEN RIVER Blacks Fork Jct 8869 10.7 -M * 13.6 -M * Buck Pasture 9632 18.7 -M * 20.6 -M * EF Blacks Fork GS 9360 15.4 -M * -M -M * Hams Fork 7840 17.4 9.9 176 18.3 9.6 191 Hewinta 9500 12.6 8.6 147 14.2 11.5 123 Hickerson Park 9122 8.2 6.4 128 8.5 8.1 105 Hole-in-Rock 9168 6.9 6.0 115 9.2 7.6 121 Indian Creek 9425 36.5 20.2 181 -M 18.9 * Kelley R.S. 8180 23.5 12.6 187 28.1 15.4 182 Spirit Lk 10235 13.6 -M * 14.7 -M * Steel Creek Park 10158 15.3 12.5 122 17.2 13.2 130 ----- ----- Basin Index (%) 158 146 UPPER BEAR RIVER Bear River RS 8777 13.1 -M * 15.4 -M * Bug Lake 7987 30.4 16.0 190 30.0 16.3 184 Burts Miller Ranch 8000 7.6 -M * 8.4 -M * Chalk Creek #1 9171 31.7 19.8 160 32.0 20.7 155 Hayden Fork 9130 23.1 13.2 175 -M 17.4 * Kelley R.S. 8180 23.5 12.6 187 28.1 15.4 182 Lily Lake 9133 14.3 11.0 130 17.0 14.0 121 Monte Cristo 8932 33.5 22.8 147 30.9 21.7 142 Salt River Summit 7760 20.2 11.1 182 -M 14.2 * ----- ----- Basin Index (%) 166 157 ----------------------------------------------------------------------------- -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.