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 2 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 20.3 8.9 228 42.2 22.9 184 Black Bear 8170 50.8 37.4 136 59.8 41.8 143 Blind Bull Sum 8650 48.3 23.0 210 38.9 21.4 182 Cottonwood Creek 7670 29.3 15.0 195 43.8 27.6 159 East Rim Divide 7930 10.4 8.2 127 22.4 13.0 172 Grand Targhee 9260 57.7 45.1 128 51.0 34.8 147 Granite Creek 6770 21.3 8.1 263 38.2 21.4 179 Grassy Lake 7265 39.8 28.7 139 61.5 39.4 156 Gros Ventre Summit 8750 20.9 11.5 182 26.5 14.7 180 Gunsight Pass 9820 26.1 12.3 212 28.2 16.1 175 Lewis Lake Divide 7850 48.7 29.9 163 59.6 38.7 154 Phillips Bench 8200 42.0 25.1 167 50.6 30.7 165 Salt River Summit 7760 17.8 7.8 228 31.9 18.4 173 Snake River Station 6920 13.7 6.8 201 39.4 24.8 159 Spring Creek Divide 9000 44.6 24.3 184 44.3 26.3 168 Thumb Divide 7980 20.2 11.9 170 30.5 21.0 145 Togwotee Pass 9580 37.0 24.8 149 43.0 27.4 157 Two Ocean Plateau 9240 -M 29.8 * -M 30.2 * Willow Creek 8380 28.9 22.6 128 57.4 37.7 152 Younts Peak 8350 23.1 15.6 148 33.8 17.7 191 ----- ----- Basin Index (%) 164 162 MADISON-GALLATIN Black Bear 8170 50.8 37.4 136 59.8 41.8 143 Canyon 7870 18.5 10.0 185 28.8 18.1 159 Madison Plateau 7750 29.6 21.2 140 40.0 29.0 138 West Yellowstone 6700 .0 1.2 0 26.0 16.0 162 Whiskey Creek 6800 12.6 14.2 89 29.8 22.4 133 ----- ----- Basin Index (%) 133 145 YELLOWSTONE Beartooth Lake 9360 36.3 22.7 160 31.1 22.0 141 Burnt Mtn 5880 .1 .0 * 18.5 16.0 116 Canyon 7870 18.5 10.0 185 28.8 18.1 159 Cole Creek 7850 17.1 16.6 103 14.1 16.5 85 Evening Star 9200 42.0 24.8 169 49.0 30.5 161 Fisher Creek 9100 48.0 32.6 147 52.1 35.2 148 Northeast Entrance 7350 2.6 2.4 108 23.1 13.8 167 Parker Peak 9400 42.9 21.2 202 40.0 20.1 199 Sylvan Lake 8420 27.0 19.5 138 42.0 25.1 167 Thumb Divide 7980 20.2 11.9 170 30.5 21.0 145 Two Ocean Plateau 9240 -M 29.8 * -M 30.2 * White Mill 8700 40.7 23.8 171 39.6 26.4 150 Wolverine 7650 2.8 1.9 147 23.7 13.8 172 ----- ----- Basin Index (%) 159 152 WIND RIVER Burroughs Creek 8750 20.1 -M * 29.2 -M * Castle Creek 8400 7.0 -M * 17.5 -M * Cold Springs 9630 16.0 1.2 1333 22.3 12.5 178 Deer Park 9700 37.1 15.8 235 43.4 23.5 185 Hobbs Park 10100 35.0 16.0 219 34.5 16.8 205 Kirwin 9550 26.1 10.5 249 29.1 13.9 209 Little Warm 9370 19.3 8.6 224 27.2 15.4 177 Owl Creek 8975 8.8 .8 1100 15.3 8.0 191 South Pass 9040 34.3 14.7 233 33.6 20.5 164 St. Lawrence Alt 8620 9.7 2.1 462 20.6 11.6 178 Togwotee Pass 9580 37.0 24.8 149 43.0 27.4 157 Townsend Creek 8700 19.8 7.3 271 28.1 15.0 187 ----- ----- Basin Index (%) 239 180 BIGHORN BASIN Bald Mtn. 9380 24.3 20.5 119 20.9 19.8 106 Bear Trap Meadow 8200 7.2 .7 1029 14.7 10.7 137 Bone Springs Div 9350 23.4 16.5 142 21.2 18.3 116 Grave Springs 8550 11.4 9.5 120 13.5 13.0 104 Kirwin 9550 26.1 10.5 249 29.1 13.9 209 Marquette 8760 20.4 -M * 23.6 -M * Middle Powder 7760 13.7 11.5 119 14.0 14.2 99 Owl Creek 8975 8.8 .8 1100 15.3 8.0 191 Powder River Pass 9480 11.8 9.2 128 17.9 15.1 119 Shell Creek 9580 20.4 15.9 128 18.0 16.4 110 Timber Creek 7950 7.9 3.0 263 15.1 10.1 150 ----- ----- Basin Index (%) 158 129 SHOSHONE RIVER Blackwater 9780 42.1 25.5 165 46.3 23.6 196 Evening Star 9200 42.0 24.8 169 49.0 30.5 161 Marquette 8760 20.4 -M * 23.6 -M * Sylvan Road 7120 .0 5.2 0 32.4 18.6 174 Younts Peak 8350 23.1 15.6 148 33.8 17.7 191 ----- ----- Basin Index (%) 151 179 POWDER RIVER Bear Trap Meadow 8200 7.2 .7 1029 14.7 10.7 137 Cloud Peak Reservoir 9860 22.0 16.4 134 26.1 16.7 156 Grave Springs 8550 11.4 9.5 120 13.5 13.0 104 Hansen Sawmill 8360 15.7 2.1 748 18.9 11.0 172 Middle Powder 7760 13.7 11.5 119 14.0 14.2 99 Powder River Pass 9480 11.8 9.2 128 17.9 15.1 119 Soldier Park 8720 18.1 -M * 20.3 -M * ----- ----- Basin Index (%) 166 130 TONGUE RIVER Big Goose 7990 15.1 9.2 164 19.5 14.2 137 Bone Springs Div 9350 23.4 16.5 142 21.2 18.3 116 Burgess Junction 7880 13.4 12.0 112 15.8 14.9 106 Dome Lake 8880 19.6 11.4 172 21.7 16.6 131 Little Goose 8870 19.0 -M * 23.8 -M * Sucker Creek 8880 16.4 12.0 137 18.7 17.5 107 Tie Creek 6870 4.5 2.6 173 19.4 14.5 134 ----- ----- Basin Index (%) 145 121 BELLE FOURCHE Cole Canyon 5910 1.4 .4 350* 11.7 12.1 97 ----- ----- Basin Index (%) 350* 97 CHEYENNE RIVER BASIN Blind Park 6890 .0 .3 0* 11.2 14.5 77 North Rapid Creek 6130 .0 .7 0 9.7 12.4 78 ----- ----- Basin Index (%) 0 78 UPPER N. PLATTE Arapaho Ridge 10960 26.7 22.3 120 29.7 26.3 113 Blackhall Mtn 9820 36.9 -M * 41.5 -M * Columbine 9160 12.9 17.8 72 31.7 28.7 110 Divide Peak 8880 12.2 18.0 68 25.9 24.4 106 Joe Wright 10120 19.2 23.1 83 33.0 30.0 110 Laprele Creek 8375 6.4 5.8 110 14.8 15.1 98 Med Bow 10500 40.1 -M * 40.5 -M * North French Creek 10130 28.2 32.8 86 33.3 30.8 108 Never Summer 10280 25.1 21.8 115 22.6 -M * Old Battle 10000 40.2 34.7 116 42.7 39.3 109 Rawah 9020 5.7 5.6 102 20.4 17.3 118 Sage Creek Basin 7850 -M 1.1 * 17.8 16.2 110 Sand Lake 10050 32.9 31.4 105 31.6 29.2 108 South Brush Creek 8440 .2 8.8 2 15.4 17.9 86 Tower 10500 44.4 50.2 88 50.4 44.9 112 Webber Springs 9250 23.0 21.5 107 36.9 30.1 123 Willow Creek Pass 9540 19.3 14.3 135 20.5 15.8 130 Zirkel 9340 24.7 20.9 118 46.5 31.1 150 ----- ----- Basin Index (%) 98 113 SWEETWATER Deer Park 9700 37.1 15.8 235 43.4 23.5 185 Larsen Creek 9000 13.1 8.9 147 26.0 -M * South Pass 9040 34.3 14.7 233 33.6 20.5 164 ----- ----- Basin Index (%) 214 175 LOWER N. PLATTE Casper Mtn. 7900 13.0 13.0 100 18.5 18.1 102 Laprele Creek 8375 6.4 5.8 110 14.8 15.1 98 Reno Hill 8400 13.3 12.4 107 18.1 19.0 95 Windy Peak 7900 4.0 3.7 108 13.9 13.0 107 ----- ----- Basin Index (%) 105 100 LARAMIE RIVER Brooklyn Lake 10240 21.1 23.3 91 26.2 24.8 106 Cinnabar Park 9574 14.3 19.2 74 26.4 27.0 98 Crow Creek 8330 .0 .0 * 12.1 13.5 90 Deadman Hill 10220 22.3 19.1 117 24.5 20.8 118 Rawah 9020 5.7 5.6 102 20.4 17.3 118 Roach 9700 16.7 17.1 98 25.0 22.4 112 ----- ----- Basin Index (%) 95 107 S. PLATTE Black Mountain 8920 8.4 -M * 16.3 -M * Crow Creek 8330 .0 .0 * 12.1 13.5 90 Deadman Hill 10220 22.3 19.1 117 24.5 20.8 118 ----- ----- Basin Index (%) 117* 107 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 19.5 17.2 113 Divide Peak 8880 12.2 18.0 68 25.9 24.4 106 Elk River 8700 5.8 12.9 45 23.3 22.8 102 Little Snake River 8915 23.5 22.1 106 43.1 32.9 131 Old Battle 10000 40.2 34.7 116 42.7 39.3 109 Sage Creek Basin 7850 -M 1.1 * 17.8 16.2 110 Sandstone RS 8150 -M 5.6 * 18.7 20.8 90 Whiskey Park 8950 24.7 26.6 93 34.9 31.6 110 ----- ----- Basin Index (%) 93 110 UPPER GREEN RIVER Big Sandy Opening 9080 22.6 10.2 222 25.7 15.2 169 Blind Bull Sum 8650 48.3 23.0 210 38.9 21.4 182 East Rim Divide 7930 10.4 8.2 127 22.4 13.0 172 Elkhart Park G.S. 9400 20.8 11.1 187 26.3 15.1 174 Gros Ventre Summit 8750 20.9 11.5 182 26.5 14.7 180 Gunsight Pass 9820 26.1 12.3 212 28.2 16.1 175 Kendall R.S. 7740 14.3 3.8 376 30.7 15.6 197 Loomis Park 8240 24.2 10.8 224 34.3 19.0 181 New Fork Lake 8340 12.3 6.3 195 19.5 12.2 160 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 14.7 9.1 162 29.2 15.7 186 Spring Creek Divide 9000 44.6 24.3 184 44.3 26.3 168 Triple Peak 8500 36.5 17.1 213 44.6 28.0 159 ----- ----- Basin Index (%) 200 175 LOWER GREEN RIVER Blacks Fork Jct 8869 5.3 -M * 18.7 -M * Buck Pasture 9632 16.6 -M * 27.3 -M * EF Blacks Fork GS 9360 13.0 -M * 21.4 -M * Hams Fork 7840 9.7 2.5 388 23.8 13.2 180 Hewinta 9500 7.8 4.6 170 20.9 16.3 128 Hickerson Park 9122 4.1 3.9 105 15.0 12.1 124 Hole-in-Rock 9168 5.0 2.2 227 15.7 11.6 135 Indian Creek 9425 44.5 22.8 195 45.0 25.1 179 Kelley R.S. 8180 24.4 11.2 218 33.7 20.2 167 Spirit Lk 10235 15.9 -M * 20.8 -M * Steel Creek Park 10158 22.5 17.2 131 25.2 19.2 131 ----- ----- Basin Index (%) 183 152 UPPER BEAR RIVER Bear River RS 8777 1.1 -M * 21.4 -M * Bug Lake 7987 33.4 14.7 227 37.6 21.8 172 Burts Miller Ranch 8000 .0 -M * 11.9 -M * Chalk Creek #1 9171 34.4 24.0 143 41.0 28.6 143 Hayden Fork 9130 15.2 9.1 167 33.6 23.9 141 Kelley R.S. 8180 24.4 11.2 218 33.7 20.2 167 Lily Lake 9133 12.9 10.0 129 23.0 19.6 117 Monte Cristo 8932 39.1 26.2 149 44.5 29.3 152 Salt River Summit 7760 17.8 7.8 228 31.9 18.4 173 ----- ----- Basin Index (%) 172 152 ----------------------------------------------------------------------------- -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.