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: APRIL 21 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 21.1 11.7 180 40.5 21.8 186 Black Bear 8170 48.1 36.9 130 56.4 40.0 141 Blind Bull Sum 8650 44.7 24.1 185 -M 20.3 * Cottonwood Creek 7670 27.4 18.3 150 40.3 26.0 155 East Rim Divide 7930 11.7 9.4 124 21.5 12.3 175 Grand Targhee 9260 51.0 42.2 121 45.3 32.8 138 Granite Creek 6770 22.6 10.5 215 36.9 20.4 181 Grassy Lake 7265 37.3 31.1 120 57.7 37.6 153 Gros Ventre Summit 8750 -M 13.2 * -M 13.8 * Gunsight Pass 9820 24.0 13.7 175 26.3 15.0 175 Lewis Lake Divide 7850 46.6 30.5 153 57.5 37.0 155 Phillips Bench 8200 38.9 25.4 153 48.1 29.3 164 Salt River Summit 7760 17.5 9.4 186 30.1 17.4 173 Snake River Station 6920 14.8 11.1 133 37.3 23.6 158 Spring Creek Divide 9000 42.2 23.5 180 41.7 24.9 167 Thumb Divide 7980 20.7 14.4 144 29.1 19.8 147 Togwotee Pass 9580 34.5 24.0 144 40.3 25.8 156 Two Ocean Plateau 9240 -M 28.3 * -M 28.7 * Willow Creek 8380 27.8 26.7 104 52.8 35.4 149 Younts Peak 8350 24.7 15.2 162 32.2 16.7 193 ----- ----- Basin Index (%) 147 159 MADISON-GALLATIN Black Bear 8170 48.1 36.9 130 56.4 40.0 141 Canyon 7870 17.5 12.2 143 26.6 17.1 156 Madison Plateau 7750 28.2 22.9 123 37.9 27.6 137 West Yellowstone 6700 1.9 7.0 27 24.1 15.2 159 Whiskey Creek 6800 12.5 15.4 81 27.9 21.3 131 ----- ----- Basin Index (%) 115 143 YELLOWSTONE Beartooth Lake 9360 33.7 23.5 143 28.9 20.8 139 Burnt Mtn 5880 .1 .0 * 15.1 14.4 105 Canyon 7870 17.5 12.2 143 26.6 17.1 156 Cole Creek 7850 11.7 16.4 71 9.5 14.7 65 Evening Star 9200 39.5 24.7 160 46.5 28.9 161 Fisher Creek 9100 45.1 32.6 138 49.2 33.5 147 Northeast Entrance 7350 3.4 6.4 53 21.3 13.0 164 Parker Peak 9400 38.4 21.1 182 36.4 18.8 194 Sylvan Lake 8420 25.0 20.4 123 39.3 23.7 166 Thumb Divide 7980 20.7 14.4 144 29.1 19.8 147 Two Ocean Plateau 9240 -M 28.3 * -M 28.7 * White Mill 8700 38.4 23.7 162 37.4 25.0 150 Wolverine 7650 2.9 6.9 42 21.7 12.9 168 ----- ----- Basin Index (%) 137 149 WIND RIVER Burroughs Creek 8750 20.8 -M * 28.2 -M * Castle Creek 8400 8.4 -M * 16.9 -M * Cold Springs 9630 15.7 4.3 365 20.5 11.0 186 Deer Park 9700 33.2 16.3 204 39.4 21.7 182 Hobbs Park 10100 30.7 14.9 206 29.9 14.9 201 Kirwin 9550 23.7 10.0 237 26.5 12.5 212 Little Warm 9370 18.7 10.0 187 25.6 14.0 183 Owl Creek 8975 8.2 3.7 222 13.7 6.9 199 South Pass 9040 31.3 15.4 203 29.7 18.7 159 St. Lawrence Alt 8620 7.9 5.2 152 18.1 10.0 181 Togwotee Pass 9580 34.5 24.0 144 40.3 25.8 156 Townsend Creek 8700 17.3 9.3 186 24.3 13.4 181 ----- ----- Basin Index (%) 196 180 BIGHORN BASIN Bald Mtn. 9380 20.7 19.9 104 18.2 18.3 99 Bear Trap Meadow 8200 4.0 2.9 138 10.6 9.5 112 Bone Springs Div 9350 20.8 16.1 129 19.0 16.9 112 Grave Springs 8550 7.9 9.5 83 9.8 11.8 83 Kirwin 9550 23.7 10.0 237 26.5 12.5 212 Marquette 8760 14.5 -M * 18.4 -M * Middle Powder 7760 9.7 12.4 78 9.5 12.9 74 Owl Creek 8975 8.2 3.7 222 13.7 6.9 199 Powder River Pass 9480 9.3 10.2 91 15.0 13.8 109 Shell Creek 9580 19.2 15.4 125 16.6 14.9 111 Timber Creek 7950 6.4 4.6 139 12.2 8.5 144 ----- ----- Basin Index (%) 124 120 SHOSHONE RIVER Blackwater 9780 39.6 23.8 166 43.5 21.9 199 Evening Star 9200 39.5 24.7 160 46.5 28.9 161 Marquette 8760 14.5 -M * 18.4 -M * Sylvan Road 7120 .0 9.5 0 31.5 17.7 178 Younts Peak 8350 24.7 15.2 162 32.2 16.7 193 ----- ----- Basin Index (%) 142 180 POWDER RIVER Bear Trap Meadow 8200 4.0 2.9 138 10.6 9.5 112 Cloud Peak Reservoir 9860 17.2 15.9 108 20.7 15.0 138 Grave Springs 8550 7.9 9.5 83 9.8 11.8 83 Hansen Sawmill 8360 10.8 4.6 235 16.0 9.7 165 Middle Powder 7760 9.7 12.4 78 9.5 12.9 74 Powder River Pass 9480 9.3 10.2 91 15.0 13.8 109 Soldier Park 8720 14.2 -M * 15.9 -M * ----- ----- Basin Index (%) 106 112 TONGUE RIVER Big Goose 7990 11.6 9.2 126 15.4 12.8 120 Bone Springs Div 9350 20.8 16.1 129 19.0 16.9 112 Burgess Junction 7880 11.0 12.6 87 12.9 13.6 95 Dome Lake 8880 16.6 11.8 141 18.0 15.0 120 Little Goose 8870 14.3 -M * 19.0 -M * Sucker Creek 8880 13.3 12.7 105 15.2 15.9 96 Tie Creek 6870 .1 4.2 2 14.6 13.0 112 ----- ----- Basin Index (%) 110 109 BELLE FOURCHE Cole Canyon 5910 .0 1.8 0 8.7 10.5 83 ----- ----- Basin Index (%) 0 83 CHEYENNE RIVER BASIN Blind Park 6890 .0 4.0 0 10.4 13.2 79 North Rapid Creek 6130 .0 4.0 0 8.9 11.2 79 ----- ----- Basin Index (%) 0 79 UPPER N. PLATTE Arapaho Ridge 10960 24.4 21.3 115 27.4 24.4 112 Blackhall Mtn 9820 34.3 -M * 38.8 -M * Columbine 9160 10.9 20.6 53 28.4 27.0 105 Divide Peak 8880 10.9 18.6 59 23.5 22.9 103 Joe Wright 10120 16.0 22.4 71 29.5 27.9 106 Laprele Creek 8375 6.2 7.8 79 13.0 13.8 94 Med Bow 10500 35.3 -M * 36.3 -M * North French Creek 10130 23.6 32.0 74 28.5 28.7 99 Never Summer 10280 22.6 20.7 109 20.4 -M * Old Battle 10000 36.5 32.9 111 39.1 37.2 105 Rawah 9020 4.2 8.3 51 17.8 15.6 114 Sage Creek Basin 7850 -M 5.4 * 17.0 15.3 111 Sand Lake 10050 29.8 30.6 97 28.2 27.0 104 South Brush Creek 8440 -M 9.7 * 13.0 16.5 79 Tower 10500 39.0 48.2 81 44.8 42.3 106 Webber Springs 9250 22.1 21.8 101 34.1 28.5 120 Willow Creek Pass 9540 18.1 13.3 136 19.2 14.5 132 Zirkel 9340 23.2 22.6 103 43.1 29.8 145 ----- ----- Basin Index (%) 90 109 SWEETWATER Deer Park 9700 33.2 16.3 204 39.4 21.7 182 Larsen Creek 9000 12.6 10.2 124 24.3 -M * South Pass 9040 31.3 15.4 203 29.7 18.7 159 ----- ----- Basin Index (%) 184 171 LOWER N. PLATTE Casper Mtn. 7900 9.6 14.4 67 14.2 16.7 85 Laprele Creek 8375 6.2 7.8 79 13.0 13.8 94 Reno Hill 8400 11.7 14.0 84 15.8 17.3 91 Windy Peak 7900 3.6 6.5 55 11.9 11.7 102 ----- ----- Basin Index (%) 73 92 LARAMIE RIVER Brooklyn Lake 10240 19.5 22.3 87 23.6 22.9 103 Cinnabar Park 9574 12.5 20.0 62 23.1 25.4 91 Crow Creek 8330 .3 .3 100* 9.7 12.0 81 Deadman Hill 10220 19.6 17.2 114 21.4 19.0 113 Rawah 9020 4.2 8.3 51 17.8 15.6 114 Roach 9700 14.6 16.6 88 22.1 20.7 107 ----- ----- Basin Index (%) 83 102 S. PLATTE Black Mountain 8920 7.5 -M * 13.9 -M * Crow Creek 8330 .3 .3 100* 9.7 12.0 81 Deadman Hill 10220 19.6 17.2 114 21.4 19.0 113 ----- ----- Basin Index (%) 114* 100 LITTLE SNAKE RIVER Battle Mountain 7440 .0 3.9 0 17.5 16.1 109 Divide Peak 8880 10.9 18.6 59 23.5 22.9 103 Elk River 8700 5.1 15.2 34 20.8 21.4 97 Little Snake River 8915 21.3 24.1 88 39.9 31.2 128 Old Battle 10000 36.5 32.9 111 39.1 37.2 105 Sage Creek Basin 7850 -M 5.4 * 17.0 15.3 111 Sandstone RS 8150 -M 10.0 * 16.3 19.6 83 Whiskey Park 8950 21.7 25.8 84 31.3 29.7 105 ----- ----- Basin Index (%) 79 106 UPPER GREEN RIVER Big Sandy Opening 9080 21.7 12.6 172 24.3 14.2 171 Blind Bull Sum 8650 44.7 24.1 185 -M 20.3 * East Rim Divide 7930 11.7 9.4 124 21.5 12.3 175 Elkhart Park G.S. 9400 19.9 11.9 167 25.2 14.1 179 Gros Ventre Summit 8750 -M 13.2 * -M 13.8 * Gunsight Pass 9820 24.0 13.7 175 26.3 15.0 175 Kendall R.S. 7740 16.3 8.1 201 29.8 14.8 201 Loomis Park 8240 24.6 12.8 192 33.0 18.0 183 New Fork Lake 8340 12.8 8.6 149 18.7 11.3 165 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 16.2 10.6 153 28.1 14.8 190 Spring Creek Divide 9000 42.2 23.5 180 41.7 24.9 167 Triple Peak 8500 35.3 19.2 184 42.2 26.5 159 ----- ----- Basin Index (%) 174 175 LOWER GREEN RIVER Blacks Fork Jct 8869 5.0 -M * 17.2 -M * Buck Pasture 9632 15.3 -M * 24.8 -M * EF Blacks Fork GS 9360 11.8 -M * 19.0 -M * Hams Fork 7840 10.5 6.4 164 22.6 12.1 187 Hewinta 9500 6.8 7.9 86 18.9 15.0 126 Hickerson Park 9122 5.5 5.3 104 13.7 11.1 123 Hole-in-Rock 9168 5.5 5.7 96 14.5 10.6 137 Indian Creek 9425 41.0 23.4 175 42.7 23.7 180 Kelley R.S. 8180 23.8 12.4 192 31.9 19.0 168 Spirit Lk 10235 15.1 -M * 19.6 -M * Steel Creek Park 10158 20.3 16.2 125 22.8 17.8 128 ----- ----- Basin Index (%) 147 153 UPPER BEAR RIVER Bear River RS 8777 2.8 -M * 19.9 -M * Bug Lake 7987 31.6 16.9 187 35.7 20.5 174 Burts Miller Ranch 8000 .0 -M * 11.1 -M * Chalk Creek #1 9171 31.9 24.5 130 38.3 26.9 142 Hayden Fork 9130 14.6 11.4 128 31.4 22.5 140 Kelley R.S. 8180 23.8 12.4 192 31.9 19.0 168 Lily Lake 9133 11.8 10.4 113 21.4 18.4 116 Monte Cristo 8932 36.1 27.4 132 41.7 27.5 152 Salt River Summit 7760 17.5 9.4 186 30.1 17.4 173 ----- ----- Basin Index (%) 149 151 ----------------------------------------------------------------------------- -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.