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: JUNE 4 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .0 .0 * 43.0 26.0 165 Black Bear 8170 32.1 21.2 151 62.0 46.8 132 Blind Bull Sum 8650 -M 9.0 * 40.4 24.6 164 Cottonwood Creek 7670 1.4 .0 * 46.4 31.8 146 East Rim Divide 7930 .1 .0 * 24.0 15.3 157 Grand Targhee 9260 44.2 38.6 115 53.5 39.0 137 Granite Creek 6770 .0 .0 * 40.8 24.5 167 Grassy Lake 7265 8.6 .9 956* 63.0 44.2 143 Gros Ventre Summit 8750 -M .0 * -M 17.3 * Gunsight Pass 9820 12.5 1.0 1250* 30.2 18.9 160 Lewis Lake Divide 7850 18.5 8.4 220 60.5 43.1 140 Phillips Bench 8200 17.6 7.1 248 51.7 34.7 149 Salt River Summit 7760 .1 .0 * 32.9 21.1 156 Snake River Station 6920 .0 .0 * 39.9 28.1 142 Spring Creek Divide 9000 24.4 9.2 265 46.7 29.4 159 Thumb Divide 7980 .4 .0 * 31.5 24.1 131 Togwotee Pass 9580 25.2 18.1 139 45.0 31.3 144 Two Ocean Plateau 9240 -M 23.0 * -M 34.7 * Willow Creek 8380 -M 1.5 * 60.3 43.0 140 Younts Peak 8350 .0 1.4 0* 36.0 21.0 171 ----- ----- Basin Index (%) 175* 148 MADISON-GALLATIN Black Bear 8170 32.1 21.2 151 62.0 46.8 132 Canyon 7870 .0 .0 * 30.5 21.2 144 Madison Plateau 7750 5.3 3.6 147 41.6 33.7 123 West Yellowstone 6700 .0 .0 * 26.8 19.0 141 Whiskey Creek 6800 .0 .0 * 32.1 26.1 123 ----- ----- Basin Index (%) 151* 131 YELLOWSTONE Beartooth Lake 9360 28.7 15.3 188 33.5 25.5 131 Burnt Mtn 5880 .0 .0 * 24.1 21.0 115 Canyon 7870 .0 .0 * 30.5 21.2 144 Cole Creek 7850 6.2 6.1 102 20.1 21.7 93 Evening Star 9200 26.6 15.8 168 51.4 35.3 146 Fisher Creek 9100 33.6 26.6 126 53.8 40.6 133 Northeast Entrance 7350 .0 .0 * 23.9 17.0 141 Parker Peak 9400 22.4 11.6 193 41.7 24.1 173 Sylvan Lake 8420 3.7 3.3 112 43.7 29.7 147 Thumb Divide 7980 .4 .0 * 31.5 24.1 131 Two Ocean Plateau 9240 -M 23.0 * -M 34.7 * White Mill 8700 20.5 14.9 138 40.7 30.8 132 Wolverine 7650 -M .0 * 24.9 16.7 149 ----- ----- Basin Index (%) 152 136 WIND RIVER Burroughs Creek 8750 .0 -M * 32.2 -M * Castle Creek 8400 .0 -M * 19.2 -M * Cold Springs 9630 .0 .0 * 25.3 15.7 161 Deer Park 9700 26.4 .8 3300* 47.6 27.3 174 Hobbs Park 10100 25.5 4.2 607 38.9 20.9 186 Kirwin 9550 9.3 .6 1550* 31.3 17.3 181 Little Warm 9370 1.6 .0 * 28.4 18.7 152 Owl Creek 8975 .0 .0 * 17.6 11.0 160 South Pass 9040 24.8 .0 * 38.1 23.9 159 St. Lawrence Alt 8620 .0 .0 * 23.5 14.8 159 Togwotee Pass 9580 25.2 18.1 139 45.0 31.3 144 Townsend Creek 8700 2.5 .0 * 32.8 18.5 177 ----- ----- Basin Index (%) 486* 165 BIGHORN BASIN Bald Mtn. 9380 17.8 12.0 148 23.9 23.8 100 Bear Trap Meadow 8200 .0 .0 * 17.6 14.1 125 Bone Springs Div 9350 10.3 5.6 184 24.2 22.5 108 Grave Springs 8550 .0 .0 * 16.1 16.4 98 Kirwin 9550 9.3 .6 1550* 31.3 17.3 181 Marquette 8760 6.0 -M * 27.3 -M * Middle Powder 7760 .0 .0 * 16.8 17.6 95 Owl Creek 8975 .0 .0 * 17.6 11.0 160 Powder River Pass 9480 .0 .0 * 19.8 19.1 104 Shell Creek 9580 7.8 6.9 113 20.1 20.1 100 Timber Creek 7950 .0 .0 * 19.1 13.9 137 ----- ----- Basin Index (%) 180* 117 SHOSHONE RIVER Blackwater 9780 31.9 17.4 183 48.5 27.7 175 Evening Star 9200 26.6 15.8 168 51.4 35.3 146 Marquette 8760 6.0 -M * 27.3 -M * Sylvan Road 7120 .0 .0 * 33.2 21.6 154 Younts Peak 8350 .0 1.4 0* 36.0 21.0 171 ----- ----- Basin Index (%) 169* 160 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 17.6 14.1 125 Cloud Peak Reservoir 9860 12.8 2.3 557 29.2 21.5 136 Grave Springs 8550 .0 .0 * 16.1 16.4 98 Hansen Sawmill 8360 .0 .0 * 18.7 14.5 129 Middle Powder 7760 .0 .0 * 16.8 17.6 95 Powder River Pass 9480 .0 .0 * 19.8 19.1 104 Soldier Park 8720 .1 -M * 23.1 -M * ----- ----- Basin Index (%) 557* 115 TONGUE RIVER Big Goose 7990 .2 .0 * 22.1 18.4 120 Bone Springs Div 9350 10.3 5.6 184 24.2 22.5 108 Burgess Junction 7880 .0 .0 * 20.3 18.3 111 Dome Lake 8880 5.1 .0 * 25.5 20.5 124 Little Goose 8870 3.9 -M * 26.4 -M * Sucker Creek 8880 1.0 .0 * 22.4 21.8 103 Tie Creek 6870 .2 .0 * 24.7 18.9 131 ----- ----- Basin Index (%) 300* 116 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 14.2 17.3 82 ----- ----- Basin Index (%) * 82 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 15.1 18.9 80 North Rapid Creek 6130 .0 .0 * 13.6 16.5 82 ----- ----- Basin Index (%) * 81 UPPER N. PLATTE Arapaho Ridge 10960 16.3 5.4 302 33.6 29.6 114 Blackhall Mtn 9820 21.8 -M * 45.4 -M * Columbine 9160 -M .0 * 35.5 31.7 112 Divide Peak 8880 .0 .0 * 28.7 27.6 104 Joe Wright 10120 12.6 12.4 102 38.1 34.7 110 Laprele Creek 8375 .4 .0 * 18.8 18.3 103 Med Bow 10500 31.8 -M * 44.4 -M * North French Creek 10130 16.5 18.1 91 37.1 35.3 105 Never Summer 10280 21.7 14.2 153 26.4 -M * Old Battle 10000 32.4 20.8 156 47.1 43.8 108 Rawah 9020 .1 .0 * 23.2 20.1 115 Sage Creek Basin 7850 -M .0 * 19.5 18.0 108 Sand Lake 10050 28.5 19.1 149 35.8 33.6 107 South Brush Creek 8440 .1 .0 * 18.2 21.3 85 Tower 10500 35.4 34.3 103 56.4 49.6 114 Webber Springs 9250 2.3 .0 * 40.4 33.3 121 Willow Creek Pass 9540 4.1 .0 * 23.8 18.8 127 Zirkel 9340 .0 .0 * 50.7 34.5 147 ----- ----- Basin Index (%) 137* 113 SWEETWATER Deer Park 9700 26.4 .8 3300* 47.6 27.3 174 Larsen Creek 9000 .0 .0 * 28.4 -M * South Pass 9040 24.8 .0 * 38.1 23.9 159 ----- ----- Basin Index (%) 6400* 167 LOWER N. PLATTE Casper Mtn. 7900 .5 .0 * 23.1 22.1 105 Laprele Creek 8375 .4 .0 * 18.8 18.3 103 Reno Hill 8400 .0 .0 * 23.1 23.0 100 Windy Peak 7900 .1 .0 * 19.0 16.4 116 ----- ----- Basin Index (%) * 105 LARAMIE RIVER Brooklyn Lake 10240 2.9 2.4 121 30.4 28.6 106 Cinnabar Park 9574 .0 .0 * 29.4 30.7 96 Crow Creek 8330 .0 .0 * 16.1 16.7 96 Deadman Hill 10220 13.8 4.7 294 30.2 24.3 124 Rawah 9020 .1 .0 * 23.2 20.1 115 Roach 9700 1.2 .5 240* 29.1 26.0 112 ----- ----- Basin Index (%) 237* 108 S. PLATTE Black Mountain 8920 -M -M * 21.3 -M * Crow Creek 8330 .0 .0 * 16.1 16.7 96 Deadman Hill 10220 13.8 4.7 294 30.2 24.3 124 ----- ----- Basin Index (%) 294* 113 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 21.1 19.4 109 Divide Peak 8880 .0 .0 * 28.7 27.6 104 Elk River 8700 .0 .0 * 25.0 25.7 97 Little Snake River 8915 .1 .7 14* 45.9 36.5 126 Old Battle 10000 32.4 20.8 156 47.1 43.8 108 Sage Creek Basin 7850 -M .0 * 19.5 18.0 108 Sandstone RS 8150 .0 .0 * 20.3 23.5 86 Whiskey Park 8950 3.3 3.1 106 37.8 35.2 107 ----- ----- Basin Index (%) 146* 107 UPPER GREEN RIVER Big Sandy Opening 9080 .1 .0 * 27.6 18.2 152 Blind Bull Sum 8650 -M 9.0 * 40.4 24.6 164 East Rim Divide 7930 .1 .0 * 24.0 15.3 157 Elkhart Park G.S. 9400 .0 .0 * 27.7 18.2 152 Gros Ventre Summit 8750 -M .0 * -M 17.3 * Gunsight Pass 9820 12.5 1.0 1250* 30.2 18.9 160 Kendall R.S. 7740 .0 .0 * 32.0 17.9 179 Loomis Park 8240 1.0 .0 * 35.8 21.8 164 New Fork Lake 8340 .0 .0 * 23.2 14.8 157 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 .0 .0 * 30.3 17.7 171 Spring Creek Divide 9000 24.4 9.2 265 46.7 29.4 159 Triple Peak 8500 8.4 .0 * 46.3 31.8 146 ----- ----- Basin Index (%) 456* 159 LOWER GREEN RIVER Blacks Fork Jct 8869 .1 -M * 19.9 -M * Buck Pasture 9632 .2 -M * 28.8 -M * EF Blacks Fork GS 9360 -M -M * 24.1 -M * Hams Fork 7840 .1 .0 * 25.2 15.5 163 Hewinta 9500 .0 .0 * 22.4 18.8 119 Hickerson Park 9122 .0 .0 * 16.3 14.5 112 Hole-in-Rock 9168 .0 .0 * 17.3 14.2 122 Indian Creek 9425 22.2 8.2 271 47.4 28.3 167 Kelley R.S. 8180 .0 .0 * 35.8 23.1 155 Spirit Lk 10235 .0 -M * 22.6 -M * Steel Creek Park 10158 7.0 8.2 85 26.9 22.3 121 ----- ----- Basin Index (%) 179* 140 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 22.4 -M * Bug Lake 7987 .8 .0 * 39.2 24.7 159 Burts Miller Ranch 8000 .0 -M * 12.6 -M * Chalk Creek #1 9171 5.8 3.6 161 43.0 32.3 133 Hayden Fork 9130 .0 .0 * 33.0 27.0 122 Kelley R.S. 8180 .0 .0 * 35.8 23.1 155 Lily Lake 9133 .0 .0 * 24.2 22.6 107 Monte Cristo 8932 11.5 1.8 639* 46.5 33.1 140 Salt River Summit 7760 .1 .0 * 32.9 21.1 156 ----- ----- Basin Index (%) 337* 138 ----------------------------------------------------------------------------- -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.