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 THURSDAY: APRIL 20 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 21.7 11.9 182 40.6 21.7 187 Black Bear 8170 48.3 36.9 131 56.1 39.8 141 Blind Bull Sum 8650 44.2 24.0 184 -M 20.2 * Cottonwood Creek 7670 27.4 18.6 147 40.1 25.8 155 East Rim Divide 7930 12.4 9.5 131 21.4 12.2 175 Grand Targhee 9260 50.2 42.0 120 44.7 32.6 137 Granite Creek 6770 22.9 10.8 212 36.8 20.3 181 Grassy Lake 7265 37.6 31.3 120 57.3 37.3 154 Gros Ventre Summit 8750 -M 13.2 * -M 13.7 * Gunsight Pass 9820 24.2 13.6 178 26.1 14.9 175 Lewis Lake Divide 7850 46.9 30.4 154 57.6 36.8 157 Phillips Bench 8200 38.9 25.6 152 47.9 29.2 164 Salt River Summit 7760 17.8 9.7 184 29.9 17.4 172 Snake River Station 6920 16.0 11.3 142 37.2 23.5 158 Spring Creek Divide 9000 42.0 23.5 179 41.6 24.7 168 Thumb Divide 7980 21.1 14.5 146 29.1 19.7 148 Togwotee Pass 9580 34.3 23.8 144 40.0 25.7 156 Two Ocean Plateau 9240 -M 28.1 * -M 28.5 * Willow Creek 8380 27.8 26.8 104 52.2 35.3 148 Younts Peak 8350 24.7 15.1 164 32.0 16.6 193 ----- ----- Basin Index (%) 147 159 MADISON-GALLATIN Black Bear 8170 48.3 36.9 131 56.1 39.8 141 Canyon 7870 17.7 12.2 145 26.6 17.0 156 Madison Plateau 7750 28.2 22.9 123 37.8 27.5 137 West Yellowstone 6700 2.6 7.4 35 24.1 15.1 160 Whiskey Creek 6800 12.8 15.3 84 27.9 21.2 132 ----- ----- Basin Index (%) 116 143 YELLOWSTONE Beartooth Lake 9360 33.6 23.4 144 28.9 20.8 139 Burnt Mtn 5880 .1 .0 * 15.1 14.2 106 Canyon 7870 17.7 12.2 145 26.6 17.0 156 Cole Creek 7850 11.9 16.3 73 9.5 14.5 66 Evening Star 9200 39.3 24.8 158 46.3 28.7 161 Fisher Creek 9100 45.0 32.4 139 49.2 33.3 148 Northeast Entrance 7350 3.9 6.7 58 21.1 13.0 162 Parker Peak 9400 38.0 20.9 182 35.9 18.7 192 Sylvan Lake 8420 25.0 20.4 123 38.9 23.6 165 Thumb Divide 7980 21.1 14.5 146 29.1 19.7 148 Two Ocean Plateau 9240 -M 28.1 * -M 28.5 * White Mill 8700 38.0 23.7 160 37.3 24.9 150 Wolverine 7650 4.0 7.2 56 21.4 12.8 167 ----- ----- Basin Index (%) 137 149 WIND RIVER Burroughs Creek 8750 21.0 -M * 28.0 -M * Castle Creek 8400 8.6 -M * 15.8 -M * Cold Springs 9630 15.8 4.6 343 20.4 10.9 187 Deer Park 9700 33.2 16.3 204 39.3 21.5 183 Hobbs Park 10100 30.4 14.8 205 29.8 14.8 201 Kirwin 9550 22.8 10.0 228 26.1 12.4 210 Little Warm 9370 19.0 10.1 188 25.5 13.9 183 Owl Creek 8975 8.4 4.0 210 13.4 6.9 194 South Pass 9040 31.4 15.5 203 29.6 18.6 159 St. Lawrence Alt 8620 7.8 5.3 147 17.9 9.9 181 Togwotee Pass 9580 34.3 23.8 144 40.0 25.7 156 Townsend Creek 8700 17.4 9.4 185 24.2 13.3 182 ----- ----- Basin Index (%) 194 180 BIGHORN BASIN Bald Mtn. 9380 21.0 19.8 106 18.1 18.2 99 Bear Trap Meadow 8200 4.1 3.2 128 10.5 9.4 112 Bone Springs Div 9350 20.9 16.1 130 18.8 16.7 113 Grave Springs 8550 7.7 9.6 80 9.7 11.7 83 Kirwin 9550 22.8 10.0 228 26.1 12.4 210 Marquette 8760 14.2 -M * 18.2 -M * Middle Powder 7760 9.8 12.5 78 9.2 12.8 72 Owl Creek 8975 8.4 4.0 210 13.4 6.9 194 Powder River Pass 9480 9.5 10.2 93 14.9 13.7 109 Shell Creek 9580 19.2 15.4 125 16.5 14.8 111 Timber Creek 7950 6.6 4.8 138 11.9 8.4 142 ----- ----- Basin Index (%) 123 119 SHOSHONE RIVER Blackwater 9780 39.3 23.8 165 43.5 21.8 200 Evening Star 9200 39.3 24.8 158 46.3 28.7 161 Marquette 8760 14.2 -M * 18.2 -M * Sylvan Road 7120 .4 9.8 4 31.5 17.6 179 Younts Peak 8350 24.7 15.1 164 32.0 16.6 193 ----- ----- Basin Index (%) 141 181 POWDER RIVER Bear Trap Meadow 8200 4.1 3.2 128 10.5 9.4 112 Cloud Peak Reservoir 9860 17.2 15.8 109 20.7 14.9 139 Grave Springs 8550 7.7 9.6 80 9.7 11.7 83 Hansen Sawmill 8360 11.1 4.8 231 15.8 9.5 166 Middle Powder 7760 9.8 12.5 78 9.2 12.8 72 Powder River Pass 9480 9.5 10.2 93 14.9 13.7 109 Soldier Park 8720 14.4 -M * 15.8 -M * ----- ----- Basin Index (%) 106 112 TONGUE RIVER Big Goose 7990 11.7 9.3 126 15.3 12.6 121 Bone Springs Div 9350 20.9 16.1 130 18.8 16.7 113 Burgess Junction 7880 11.0 12.5 88 12.9 13.4 96 Dome Lake 8880 16.7 11.8 142 17.9 14.9 120 Little Goose 8870 14.4 -M * 19.0 -M * Sucker Creek 8880 13.4 12.7 106 15.1 15.8 96 Tie Creek 6870 .1 4.4 2 14.6 12.8 114 ----- ----- Basin Index (%) 110 110 BELLE FOURCHE Cole Canyon 5910 .0 2.0 0 8.5 10.4 82 ----- ----- Basin Index (%) 0 82 CHEYENNE RIVER BASIN Blind Park 6890 .0 4.1 0 10.3 13.1 79 North Rapid Creek 6130 .0 4.2 0 8.8 11.0 80 ----- ----- Basin Index (%) 0 79 UPPER N. PLATTE Arapaho Ridge 10960 23.9 21.4 112 26.6 24.3 109 Blackhall Mtn 9820 34.1 -M * 38.6 -M * Columbine 9160 11.2 20.6 54 27.9 26.9 104 Divide Peak 8880 11.0 18.9 58 23.3 22.8 102 Joe Wright 10120 15.5 22.2 70 29.0 27.7 105 Laprele Creek 8375 6.4 8.0 80 12.8 13.7 93 Med Bow 10500 35.3 -M * 36.0 -M * North French Creek 10130 23.6 32.0 74 28.3 28.6 99 Never Summer 10280 22.1 20.7 107 19.9 -M * Old Battle 10000 36.4 32.7 111 39.0 37.0 105 Rawah 9020 4.0 8.4 48 17.5 15.5 113 Sage Creek Basin 7850 -M 6.0 * 17.0 15.3 111 Sand Lake 10050 30.0 30.5 98 28.2 26.8 105 South Brush Creek 8440 -M 9.8 * 12.9 16.5 78 Tower 10500 37.9 48.0 79 44.5 42.1 106 Webber Springs 9250 22.8 22.0 104 34.0 28.4 120 Willow Creek Pass 9540 17.9 13.1 137 18.8 14.4 131 Zirkel 9340 23.7 22.7 104 42.7 29.7 144 ----- ----- Basin Index (%) 89 109 SWEETWATER Deer Park 9700 33.2 16.3 204 39.3 21.5 183 Larsen Creek 9000 13.1 10.3 127 24.1 -M * South Pass 9040 31.4 15.5 203 29.6 18.6 159 ----- ----- Basin Index (%) 185 172 LOWER N. PLATTE Casper Mtn. 7900 9.6 14.4 67 14.2 16.6 86 Laprele Creek 8375 6.4 8.0 80 12.8 13.7 93 Reno Hill 8400 11.8 13.9 85 15.7 17.2 91 Windy Peak 7900 3.9 6.6 59 11.8 11.6 102 ----- ----- Basin Index (%) 74 92 LARAMIE RIVER Brooklyn Lake 10240 20.4 22.2 92 23.6 22.8 104 Cinnabar Park 9574 12.5 20.1 62 22.7 25.3 90 Crow Creek 8330 .0 .7 0* 9.2 12.0 77 Deadman Hill 10220 19.6 17.0 115 21.0 18.9 111 Rawah 9020 4.0 8.4 48 17.5 15.5 113 Roach 9700 14.5 16.6 87 21.8 20.6 106 ----- ----- Basin Index (%) 84 101 S. PLATTE Black Mountain 8920 7.4 -M * 13.3 -M * Crow Creek 8330 .0 .7 0* 9.2 12.0 77 Deadman Hill 10220 19.6 17.0 115 21.0 18.9 111 ----- ----- Basin Index (%) 111* 98 LITTLE SNAKE RIVER Battle Mountain 7440 .0 4.3 0 16.5 16.1 102 Divide Peak 8880 11.0 18.9 58 23.3 22.8 102 Elk River 8700 6.1 15.5 39 20.6 21.3 97 Little Snake River 8915 21.2 24.3 87 39.5 31.2 127 Old Battle 10000 36.4 32.7 111 39.0 37.0 105 Sage Creek Basin 7850 -M 6.0 * 17.0 15.3 111 Sandstone RS 8150 -M 10.1 * 16.3 19.5 84 Whiskey Park 8950 21.1 25.9 81 30.9 29.6 104 ----- ----- Basin Index (%) 79 105 UPPER GREEN RIVER Big Sandy Opening 9080 21.6 12.7 170 24.2 14.1 172 Blind Bull Sum 8650 44.2 24.0 184 -M 20.2 * East Rim Divide 7930 12.4 9.5 131 21.4 12.2 175 Elkhart Park G.S. 9400 19.9 11.9 167 25.1 14.0 179 Gros Ventre Summit 8750 -M 13.2 * -M 13.7 * Gunsight Pass 9820 24.2 13.6 178 26.1 14.9 175 Kendall R.S. 7740 16.6 8.4 198 29.6 14.8 200 Loomis Park 8240 25.3 13.0 195 33.0 18.0 183 New Fork Lake 8340 13.3 8.8 151 18.6 11.3 165 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.9 10.7 149 28.1 14.8 190 Spring Creek Divide 9000 42.0 23.5 179 41.6 24.7 168 Triple Peak 8500 35.5 19.3 184 42.2 26.3 160 ----- ----- Basin Index (%) 174 176 LOWER GREEN RIVER Blacks Fork Jct 8869 5.2 -M * 16.8 -M * Buck Pasture 9632 15.6 -M * 24.5 -M * EF Blacks Fork GS 9360 11.6 -M * 18.6 -M * Hams Fork 7840 11.4 6.7 170 22.4 12.0 187 Hewinta 9500 6.6 8.1 81 18.4 15.0 123 Hickerson Park 9122 5.6 5.4 104 13.5 11.0 123 Hole-in-Rock 9168 5.3 5.9 90 14.2 10.5 135 Indian Creek 9425 40.8 23.3 175 42.3 23.5 180 Kelley R.S. 8180 24.0 12.7 189 31.6 18.9 167 Spirit Lk 10235 15.1 -M * 19.4 -M * Steel Creek Park 10158 19.7 16.2 122 22.3 17.7 126 ----- ----- Basin Index (%) 145 152 UPPER BEAR RIVER Bear River RS 8777 3.1 -M * 19.7 -M * Bug Lake 7987 31.2 17.2 181 35.6 20.4 175 Burts Miller Ranch 8000 .0 -M * 11.0 -M * Chalk Creek #1 9171 31.4 24.6 128 37.8 26.7 142 Hayden Fork 9130 14.3 11.8 121 30.9 22.4 138 Kelley R.S. 8180 24.0 12.7 189 31.6 18.9 167 Lily Lake 9133 11.5 10.6 108 21.1 18.3 115 Monte Cristo 8932 35.9 27.5 131 41.5 27.3 152 Salt River Summit 7760 17.8 9.7 184 29.9 17.4 172 ----- ----- Basin Index (%) 146 151 ----------------------------------------------------------------------------- -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.