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 FRIDAY: MAY 12 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 11.4 3.3 345 42.3 23.8 178 Black Bear 8170 46.9 36.8 127 59.8 43.4 138 Blind Bull Sum 8650 -M 22.4 * 39.2 22.5 174 Cottonwood Creek 7670 21.9 12.1 181 44.1 29.1 152 East Rim Divide 7930 .1 5.4 2 23.1 13.7 169 Grand Targhee 9260 56.9 46.1 123 51.8 36.3 143 Granite Creek 6770 14.3 4.0 358 38.4 22.3 172 Grassy Lake 7265 29.1 24.6 118 61.4 40.8 150 Gros Ventre Summit 8750 16.2 9.4 172 26.7 15.5 172 Gunsight Pass 9820 21.8 12.3 177 28.6 17.2 166 Lewis Lake Divide 7850 40.3 28.5 141 59.8 40.0 150 Phillips Bench 8200 35.0 22.8 154 50.8 32.2 158 Salt River Summit 7760 7.5 3.2 234 32.0 19.3 166 Snake River Station 6920 2.1 1.1 191* 39.2 25.7 153 Spring Creek Divide 9000 41.6 23.3 179 44.9 27.4 164 Thumb Divide 7980 9.7 7.4 131 30.6 22.0 139 Togwotee Pass 9580 33.6 25.3 133 43.4 28.8 151 Two Ocean Plateau 9240 -M 29.5 * -M 31.8 * Willow Creek 8380 -M 20.6 * 57.7 39.6 146 Younts Peak 8350 10.4 14.9 70 33.8 18.8 180 ----- ----- Basin Index (%) 142 156 MADISON-GALLATIN Black Bear 8170 46.9 36.8 127 59.8 43.4 138 Canyon 7870 11.5 6.7 172 28.9 19.1 151 Madison Plateau 7750 21.4 19.0 113 40.1 30.2 133 West Yellowstone 6700 .0 .0 * 26.0 16.8 155 Whiskey Creek 6800 6.7 9.9 68 30.0 23.3 129 ----- ----- Basin Index (%) 119 139 YELLOWSTONE Beartooth Lake 9360 33.3 22.9 145 31.8 23.3 136 Burnt Mtn 5880 .0 .0 * 18.6 18.4 101 Canyon 7870 11.5 6.7 172 28.9 19.1 151 Cole Creek 7850 13.5 17.2 78 14.3 18.6 77 Evening Star 9200 35.3 25.6 138 49.6 32.1 155 Fisher Creek 9100 46.5 34.4 135 52.9 36.9 143 Northeast Entrance 7350 .0 .6 0* 23.2 14.8 157 Parker Peak 9400 37.6 22.1 170 40.1 21.5 187 Sylvan Lake 8420 22.0 17.8 124 42.1 26.6 158 Thumb Divide 7980 9.7 7.4 131 30.6 22.0 139 Two Ocean Plateau 9240 -M 29.5 * -M 31.8 * White Mill 8700 36.3 24.9 146 40.1 27.8 144 Wolverine 7650 .0 .0 * 23.8 14.9 160 ----- ----- Basin Index (%) 137 143 WIND RIVER Burroughs Creek 8750 12.5 -M * 29.4 -M * Castle Creek 8400 .0 -M * 17.7 -M * Cold Springs 9630 9.3 1.0 930 22.5 13.8 163 Deer Park 9700 32.8 14.3 229 43.5 25.3 172 Hobbs Park 10100 32.1 15.8 203 34.9 18.3 191 Kirwin 9550 20.9 10.8 194 29.4 15.1 195 Little Warm 9370 14.3 6.6 217 27.6 16.6 166 Owl Creek 8975 .4 .4 100* 15.6 9.0 173 South Pass 9040 29.3 11.2 262 33.9 21.8 156 St. Lawrence Alt 8620 .9 .6 150* 20.8 12.9 161 Togwotee Pass 9580 33.6 25.3 133 43.4 28.8 151 Townsend Creek 8700 15.1 2.8 539 28.4 16.3 174 ----- ----- Basin Index (%) 212 169 BIGHORN BASIN Bald Mtn. 9380 21.6 20.8 104 21.6 21.4 101 Bear Trap Meadow 8200 .0 .0 * 14.9 11.9 125 Bone Springs Div 9350 20.1 16.5 122 22.2 20.0 111 Grave Springs 8550 7.5 7.3 103 13.7 14.5 94 Kirwin 9550 20.9 10.8 194 29.4 15.1 195 Marquette 8760 16.1 -M * 23.9 -M * Middle Powder 7760 8.0 10.2 78 14.5 15.6 93 Owl Creek 8975 .4 .4 100* 15.6 9.0 173 Powder River Pass 9480 6.7 8.9 75 18.2 16.5 110 Shell Creek 9580 16.8 16.8 100 18.7 17.8 105 Timber Creek 7950 .5 1.1 45 15.1 11.4 132 ----- ----- Basin Index (%) 110 120 SHOSHONE RIVER Blackwater 9780 40.3 24.5 164 46.7 24.9 188 Evening Star 9200 35.3 25.6 138 49.6 32.1 155 Marquette 8760 16.1 -M * 23.9 -M * Sylvan Road 7120 .0 .7 0* 32.5 19.5 167 Younts Peak 8350 10.4 14.9 70 33.8 18.8 180 ----- ----- Basin Index (%) 131 171 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 14.9 11.9 125 Cloud Peak Reservoir 9860 19.0 16.7 114 26.6 18.6 143 Grave Springs 8550 7.5 7.3 103 13.7 14.5 94 Hansen Sawmill 8360 10.7 .6 1783* 20.0 12.2 164 Middle Powder 7760 8.0 10.2 78 14.5 15.6 93 Powder River Pass 9480 6.7 8.9 75 18.2 16.5 110 Soldier Park 8720 13.0 -M * 20.7 -M * ----- ----- Basin Index (%) 119 121 TONGUE RIVER Big Goose 7990 11.4 10.0 114 20.2 16.3 124 Bone Springs Div 9350 20.1 16.5 122 22.2 20.0 111 Burgess Junction 7880 9.9 11.3 88 16.1 16.3 99 Dome Lake 8880 15.9 10.9 146 22.1 18.3 121 Little Goose 8870 14.6 -M * 24.3 -M * Sucker Creek 8880 12.6 12.5 101 19.2 19.3 99 Tie Creek 6870 .0 .9 0 19.9 16.4 121 ----- ----- Basin Index (%) 113 112 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 12.3 14.0 88 ----- ----- Basin Index (%) * 88 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 12.3 15.9 77 North Rapid Creek 6130 .0 .0 * 10.2 14.0 73 ----- ----- Basin Index (%) * 75 UPPER N. PLATTE Arapaho Ridge 10960 23.9 22.3 107 30.4 27.9 109 Blackhall Mtn 9820 33.4 -M * 42.2 -M * Columbine 9160 4.8 11.2 43 32.5 29.8 109 Divide Peak 8880 3.8 13.0 29 26.3 25.7 102 Joe Wright 10120 16.7 23.2 72 34.0 31.7 107 Laprele Creek 8375 .2 1.1 18 15.7 16.3 96 Med Bow 10500 37.5 -M * 41.3 -M * North French Creek 10130 25.1 32.5 77 34.3 32.7 105 Never Summer 10280 23.6 22.2 106 23.1 -M * Old Battle 10000 37.4 36.8 102 43.6 41.1 106 Rawah 9020 .2 2.1 10 20.8 18.6 112 Sage Creek Basin 7850 -M .0 * 18.3 17.0 108 Sand Lake 10050 32.0 31.6 101 32.3 30.9 105 South Brush Creek 8440 .5 3.6 14 16.6 19.3 86 Tower 10500 42.8 50.9 84 51.9 46.8 111 Webber Springs 9250 17.1 18.4 93 37.5 31.3 120 Willow Creek Pass 9540 15.9 12.6 126 21.0 16.6 127 Zirkel 9340 17.1 18.9 90 47.4 32.9 144 ----- ----- Basin Index (%) 87 111 SWEETWATER Deer Park 9700 32.8 14.3 229 43.5 25.3 172 Larsen Creek 9000 3.1 5.9 53 26.2 -M * South Pass 9040 29.3 11.2 262 33.9 21.8 156 ----- ----- Basin Index (%) 208 164 LOWER N. PLATTE Casper Mtn. 7900 5.8 10.8 54 19.6 19.7 99 Laprele Creek 8375 .2 1.1 18 15.7 16.3 96 Reno Hill 8400 5.9 9.4 63 19.9 20.6 97 Windy Peak 7900 .0 .0 * 15.4 14.0 110 ----- ----- Basin Index (%) 56 100 LARAMIE RIVER Brooklyn Lake 10240 16.8 20.8 81 27.0 26.2 103 Cinnabar Park 9574 10.2 16.7 61 27.0 28.8 94 Crow Creek 8330 .0 .0 * 12.5 14.6 86 Deadman Hill 10220 19.2 18.5 104 25.3 22.0 115 Rawah 9020 .2 2.1 10 20.8 18.6 112 Roach 9700 13.0 15.0 87 25.8 23.6 109 ----- ----- Basin Index (%) 81 103 S. PLATTE Black Mountain 8920 .7 -M * 16.8 -M * Crow Creek 8330 .0 .0 * 12.5 14.6 86 Deadman Hill 10220 19.2 18.5 104 25.3 22.0 115 ----- ----- Basin Index (%) 104* 103 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 19.6 18.1 108 Divide Peak 8880 3.8 13.0 29 26.3 25.7 102 Elk River 8700 .1 6.2 2 23.2 24.0 97 Little Snake River 8915 17.5 19.8 88 43.7 34.6 126 Old Battle 10000 37.4 36.8 102 43.6 41.1 106 Sage Creek Basin 7850 -M .0 * 18.3 17.0 108 Sandstone RS 8150 -M .8 * 19.6 22.0 89 Whiskey Park 8950 22.4 26.0 86 35.4 33.2 107 ----- ----- Basin Index (%) 80 106 UPPER GREEN RIVER Big Sandy Opening 9080 15.8 8.5 186 25.8 16.3 158 Blind Bull Sum 8650 -M 22.4 * 39.2 22.5 174 East Rim Divide 7930 .1 5.4 2 23.1 13.7 169 Elkhart Park G.S. 9400 15.1 9.4 161 26.9 16.2 166 Gros Ventre Summit 8750 16.2 9.4 172 26.7 15.5 172 Gunsight Pass 9820 21.8 12.3 177 28.6 17.2 166 Kendall R.S. 7740 4.1 .0 * 31.3 16.3 192 Loomis Park 8240 16.5 6.7 246 35.2 20.0 176 New Fork Lake 8340 3.5 2.1 167 20.6 13.0 158 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 3.1 6.9 45 29.2 16.4 178 Spring Creek Divide 9000 41.6 23.3 179 44.9 27.4 164 Triple Peak 8500 28.2 14.2 199 44.9 29.4 153 ----- ----- Basin Index (%) 169 168 LOWER GREEN RIVER Blacks Fork Jct 8869 .1 -M * 19.1 -M * Buck Pasture 9632 9.6 -M * 27.6 -M * EF Blacks Fork GS 9360 3.8 -M * 22.9 -M * Hams Fork 7840 .0 .0 * 24.0 14.0 171 Hewinta 9500 .0 1.1 0 21.1 17.3 122 Hickerson Park 9122 .1 .0 * 15.0 13.0 115 Hole-in-Rock 9168 .0 .0 * 15.8 12.5 126 Indian Creek 9425 37.2 21.2 175 45.2 26.4 171 Kelley R.S. 8180 11.6 7.8 149 33.9 21.3 159 Spirit Lk 10235 8.5 -M * 21.0 -M * Steel Creek Park 10158 18.2 17.4 105 25.5 20.4 125 ----- ----- Basin Index (%) 141* 145 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 21.5 -M * Bug Lake 7987 23.4 11.7 200 37.7 22.9 165 Burts Miller Ranch 8000 .0 -M * 11.9 -M * Chalk Creek #1 9171 28.6 20.7 138 41.1 30.1 137 Hayden Fork 9130 3.3 5.0 66 32.7 25.2 130 Kelley R.S. 8180 11.6 7.8 149 33.9 21.3 159 Lily Lake 9133 3.6 3.6 100 23.0 20.8 111 Monte Cristo 8932 31.8 20.6 154 44.7 30.9 145 Salt River Summit 7760 7.5 3.2 234 32.0 19.3 166 ----- ----- Basin Index (%) 151 144 ----------------------------------------------------------------------------- -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.