Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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 TUESDAY: MAY 9 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 14.2 5.0 284 42.2 23.6 179 Black Bear 8170 49.1 36.8 133 59.9 42.9 140 Blind Bull Sum 8650 -M 22.5 * 39.2 22.1 177 Cottonwood Creek 7670 24.7 13.1 189 44.1 28.6 154 East Rim Divide 7930 1.9 6.2 31 23.0 13.5 170 Grand Targhee 9260 57.4 46.4 124 51.5 35.9 143 Granite Creek 6770 16.0 5.9 271 38.4 22.0 175 Grassy Lake 7265 33.1 26.4 125 61.5 40.4 152 Gros Ventre Summit 8750 18.4 9.8 188 26.6 15.3 174 Gunsight Pass 9820 23.9 11.9 201 28.6 16.8 170 Lewis Lake Divide 7850 42.1 29.5 143 59.8 39.6 151 Phillips Bench 8200 37.5 23.3 161 50.8 31.7 160 Salt River Summit 7760 11.0 5.1 216 31.9 19.0 168 Snake River Station 6920 5.8 3.1 187 39.2 25.5 154 Spring Creek Divide 9000 44.3 23.8 186 44.8 27.0 166 Thumb Divide 7980 13.2 8.9 148 30.6 21.7 141 Togwotee Pass 9580 35.6 25.3 141 43.3 28.4 152 Two Ocean Plateau 9240 -M 29.7 * -M 31.1 * Willow Creek 8380 23.8 21.3 112 57.7 39.0 148 Younts Peak 8350 15.6 15.5 101 33.7 18.4 183 ----- ----- Basin Index (%) 147 158 MADISON-GALLATIN Black Bear 8170 49.1 36.8 133 59.9 42.9 140 Canyon 7870 13.7 7.7 178 28.8 18.8 153 Madison Plateau 7750 24.4 20.4 120 40.0 29.9 134 West Yellowstone 6700 .0 .0 * 26.0 16.6 157 Whiskey Creek 6800 8.6 11.1 77 29.9 23.0 130 ----- ----- Basin Index (%) 126 141 YELLOWSTONE Beartooth Lake 9360 34.7 23.0 151 31.8 23.0 138 Burnt Mtn 5880 .0 .0 * 18.6 17.0 109 Canyon 7870 13.7 7.7 178 28.8 18.8 153 Cole Creek 7850 14.9 17.1 87 14.3 17.8 80 Evening Star 9200 36.1 25.3 143 49.5 31.7 156 Fisher Creek 9100 45.6 34.0 134 52.7 36.5 144 Northeast Entrance 7350 .0 1.0 0 23.1 14.5 159 Parker Peak 9400 39.9 21.8 183 40.1 21.1 190 Sylvan Lake 8420 25.9 18.1 143 42.1 26.2 161 Thumb Divide 7980 13.2 8.9 148 30.6 21.7 141 Two Ocean Plateau 9240 -M 29.7 * -M 31.1 * White Mill 8700 38.8 24.6 158 40.0 27.4 146 Wolverine 7650 -M .4 * 23.8 14.5 164 ----- ----- Basin Index (%) 145 146 WIND RIVER Burroughs Creek 8750 14.8 -M * 29.4 -M * Castle Creek 8400 1.4 -M * 17.9 -M * Cold Springs 9630 12.0 1.7 706 22.5 13.3 169 Deer Park 9700 34.5 14.5 238 43.5 24.4 178 Hobbs Park 10100 34.0 15.9 214 34.5 17.7 195 Kirwin 9550 23.0 10.9 211 29.3 14.7 199 Little Warm 9370 16.6 6.7 248 27.4 16.1 170 Owl Creek 8975 2.8 .6 467 15.5 8.5 182 South Pass 9040 31.8 12.2 261 33.8 21.2 159 St. Lawrence Alt 8620 4.6 1.4 329 20.8 12.3 169 Togwotee Pass 9580 35.6 25.3 141 43.3 28.4 152 Townsend Creek 8700 17.0 4.4 386 28.3 15.7 180 ----- ----- Basin Index (%) 226 173 BIGHORN BASIN Bald Mtn. 9380 22.6 20.5 110 21.5 20.9 103 Bear Trap Meadow 8200 2.0 .2 1000* 14.9 11.5 130 Bone Springs Div 9350 21.9 16.5 133 21.7 19.5 111 Grave Springs 8550 9.1 7.9 115 13.6 13.9 98 Kirwin 9550 23.0 10.9 211 29.3 14.7 199 Marquette 8760 17.6 -M * 23.8 -M * Middle Powder 7760 10.4 11.0 95 14.3 15.2 94 Owl Creek 8975 2.8 .6 467 15.5 8.5 182 Powder River Pass 9480 8.4 9.0 93 18.2 16.1 113 Shell Creek 9580 17.8 16.7 107 18.6 17.5 106 Timber Creek 7950 3.1 1.7 182 15.0 10.8 139 ----- ----- Basin Index (%) 127 123 SHOSHONE RIVER Blackwater 9780 40.8 25.0 163 46.5 24.4 191 Evening Star 9200 36.1 25.3 143 49.5 31.7 156 Marquette 8760 17.6 -M * 23.8 -M * Sylvan Road 7120 .0 1.9 0 32.3 19.2 168 Younts Peak 8350 15.6 15.5 101 33.7 18.4 183 ----- ----- Basin Index (%) 137 173 POWDER RIVER Bear Trap Meadow 8200 2.0 .2 1000* 14.9 11.5 130 Cloud Peak Reservoir 9860 19.6 16.7 117 26.5 18.0 147 Grave Springs 8550 9.1 7.9 115 13.6 13.9 98 Hansen Sawmill 8360 12.2 1.4 871 18.8 11.8 159 Middle Powder 7760 10.4 11.0 95 14.3 15.2 94 Powder River Pass 9480 8.4 9.0 93 18.2 16.1 113 Soldier Park 8720 14.3 -M * 20.5 -M * ----- ----- Basin Index (%) 134 123 TONGUE RIVER Big Goose 7990 12.5 10.4 120 20.1 15.6 129 Bone Springs Div 9350 21.9 16.5 133 21.7 19.5 111 Burgess Junction 7880 11.2 11.5 97 16.0 15.9 101 Dome Lake 8880 17.5 11.2 156 22.0 17.8 124 Little Goose 8870 15.9 -M * 24.0 -M * Sucker Creek 8880 13.5 12.5 108 19.1 18.8 102 Tie Creek 6870 .2 1.7 12 19.9 15.7 127 ----- ----- Basin Index (%) 120 115 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 12.1 13.4 90 ----- ----- Basin Index (%) * 90 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 11.6 15.3 76 North Rapid Creek 6130 .0 .0 * 10.0 13.2 76 ----- ----- Basin Index (%) * 76 UPPER N. PLATTE Arapaho Ridge 10960 24.6 22.4 110 30.0 27.3 110 Blackhall Mtn 9820 35.2 -M * 42.1 -M * Columbine 9160 7.7 13.5 57 32.2 29.5 109 Divide Peak 8880 7.2 14.9 48 26.1 25.4 103 Joe Wright 10120 17.3 23.0 75 33.5 31.2 107 Laprele Creek 8375 .4 3.4 12 15.5 16.0 97 Med Bow 10500 37.8 -M * 41.3 -M * North French Creek 10130 26.2 32.8 80 34.1 32.2 106 Never Summer 10280 24.1 22.1 109 22.7 -M * Old Battle 10000 38.1 36.6 104 43.3 40.7 106 Rawah 9020 1.2 3.0 40 20.8 18.0 116 Sage Creek Basin 7850 -M .0 * 18.2 16.8 108 Sand Lake 10050 32.6 31.8 103 32.2 30.3 106 South Brush Creek 8440 .5 5.8 9 16.7 18.9 88 Tower 10500 43.2 51.4 84 51.1 46.2 111 Webber Springs 9250 19.0 19.8 96 37.1 31.0 120 Willow Creek Pass 9540 17.0 13.7 124 20.6 16.4 126 Zirkel 9340 19.8 19.9 99 46.8 32.2 145 ----- ----- Basin Index (%) 89 111 SWEETWATER Deer Park 9700 34.5 14.5 238 43.5 24.4 178 Larsen Creek 9000 6.3 6.8 93 26.2 -M * South Pass 9040 31.8 12.2 261 33.8 21.2 159 ----- ----- Basin Index (%) 217 170 LOWER N. PLATTE Casper Mtn. 7900 9.1 11.7 78 19.0 19.3 98 Laprele Creek 8375 .4 3.4 12 15.5 16.0 97 Reno Hill 8400 9.2 11.0 84 19.1 20.0 96 Windy Peak 7900 .1 1.2 8 14.0 13.8 101 ----- ----- Basin Index (%) 69 98 LARAMIE RIVER Brooklyn Lake 10240 18.7 21.7 86 26.9 25.9 104 Cinnabar Park 9574 12.1 17.8 68 26.9 28.2 95 Crow Creek 8330 .0 .0 * 12.5 14.2 88 Deadman Hill 10220 20.2 18.6 109 24.9 21.6 115 Rawah 9020 1.2 3.0 40 20.8 18.0 116 Roach 9700 14.2 16.2 88 25.3 23.2 109 ----- ----- Basin Index (%) 86 105 S. PLATTE Black Mountain 8920 2.5 -M * 16.4 -M * Crow Creek 8330 .0 .0 * 12.5 14.2 88 Deadman Hill 10220 20.2 18.6 109 24.9 21.6 115 ----- ----- Basin Index (%) 109* 104 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 19.5 17.8 110 Divide Peak 8880 7.2 14.9 48 26.1 25.4 103 Elk River 8700 .1 8.6 1 23.2 23.6 98 Little Snake River 8915 19.7 20.7 95 43.7 34.3 127 Old Battle 10000 38.1 36.6 104 43.3 40.7 106 Sage Creek Basin 7850 -M .0 * 18.2 16.8 108 Sandstone RS 8150 -M 2.2 * 19.5 21.7 90 Whiskey Park 8950 23.4 26.9 87 35.3 32.8 108 ----- ----- Basin Index (%) 82 107 UPPER GREEN RIVER Big Sandy Opening 9080 18.8 8.6 219 25.8 16.0 161 Blind Bull Sum 8650 -M 22.5 * 39.2 22.1 177 East Rim Divide 7930 1.9 6.2 31 23.0 13.5 170 Elkhart Park G.S. 9400 17.4 9.7 179 26.7 15.8 169 Gros Ventre Summit 8750 18.4 9.8 188 26.6 15.3 174 Gunsight Pass 9820 23.9 11.9 201 28.6 16.8 170 Kendall R.S. 7740 9.1 .0 * 31.4 16.1 195 Loomis Park 8240 19.3 7.6 254 34.9 19.7 177 New Fork Lake 8340 6.7 3.0 223 20.2 12.7 159 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.9 7.5 92 29.3 16.1 182 Spring Creek Divide 9000 44.3 23.8 186 44.8 27.0 166 Triple Peak 8500 31.7 15.1 210 44.9 29.0 155 ----- ----- Basin Index (%) 192 171 LOWER GREEN RIVER Blacks Fork Jct 8869 .2 -M * 18.8 -M * Buck Pasture 9632 12.2 -M * 27.5 -M * EF Blacks Fork GS 9360 6.8 -M * 22.1 -M * Hams Fork 7840 1.8 .2 900* 23.9 13.7 174 Hewinta 9500 1.1 2.4 46 21.0 17.0 124 Hickerson Park 9122 .2 .5 40* 14.9 12.7 117 Hole-in-Rock 9168 .0 .3 0* 15.8 12.2 130 Indian Creek 9425 40.0 21.0 190 45.1 25.9 174 Kelley R.S. 8180 15.1 8.6 176 33.9 20.9 162 Spirit Lk 10235 10.7 -M * 21.0 -M * Steel Creek Park 10158 19.8 17.8 111 25.3 20.0 126 ----- ----- Basin Index (%) 154* 147 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 21.3 -M * Bug Lake 7987 27.2 12.4 219 37.7 22.4 168 Burts Miller Ranch 8000 .0 -M * 12.0 -M * Chalk Creek #1 9171 31.3 21.9 143 41.1 29.6 139 Hayden Fork 9130 7.2 6.3 114 33.0 24.7 134 Kelley R.S. 8180 15.1 8.6 176 33.9 20.9 162 Lily Lake 9133 6.8 6.2 110 23.1 20.4 113 Monte Cristo 8932 34.8 22.0 158 44.7 30.4 147 Salt River Summit 7760 11.0 5.1 216 31.9 19.0 168 ----- ----- Basin Index (%) 162 147 ----------------------------------------------------------------------------- -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.