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 MONDAY: APRIL 2 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 17.3 14.9 116 20.1 20.3 99 Black Bear 8170 41.2 36.6 113 39.9 36.8 108 Blind Bull Sum 8650 32.7 22.6 145 19.5 18.9 103 Cottonwood Creek 7670 21.7 21.3 102 25.0 23.8 105 East Rim Divide 7930 12.3 10.0 123 12.3 11.4 108 Grand Targhee 9260 45.1 36.9 122 28.6 29.9 96 Granite Creek 6770 18.3 14.8 124 20.9 19.2 109 Grassy Lake 7265 31.4 31.6 99 34.3 34.8 99 Gros Ventre Summit 8750 15.7 13.0 121 14.8 12.5 118 Gunsight Pass 9820 16.8 13.4 125 16.1 13.3 121 Lewis Lake Divide 7850 38.7 29.5 131 37.7 34.3 110 Phillips Bench 8200 28.1 24.4 115 27.6 27.3 101 Salt River Summit 7640 11.1 12.9 86 12.8 16.1 80 Snake River Station 6920 18.5 15.3 121 23.0 21.7 106 Spring Creek Divide 9000 26.4 22.5 117 24.5 23.1 106 Thumb Divide 7980 19.2 14.8 130 18.4 17.9 103 Togwotee Pass 9580 31.2 21.7 144 31.3 23.4 134 Two Ocean Plateau 9240 36.4 25.6 142 28.4 26.3 108 Willow Creek 8080 33.4 28.0 119 34.5 32.4 106 Younts Peak 8350 -M 14.2 * -M 15.2 * ----- ----- Basin Index (%) 121 106 MADISON-GALLATIN Black Bear 8170 41.2 36.6 113 39.9 36.8 108 Canyon 7870 16.7 12.4 135 19.0 15.7 121 Madison Plateau 7750 26.5 21.4 124 26.6 25.4 105 West Yellowstone 6700 13.8 10.2 135 16.9 13.6 124 Whiskey Creek 6800 16.3 15.0 109 19.0 19.4 98 ----- ----- Basin Index (%) 120 109 YELLOWSTONE Beartooth Lake 9360 37.8 21.1 179 34.2 19.0 180 Burnt Mtn 5880 6.9 4.4 157 13.7 12.3 111 Canyon 7870 16.7 12.4 135 19.0 15.7 121 Cole Creek 7850 13.8 13.7 101 -M 12.1 * Evening Star 9200 39.8 23.9 167 41.7 26.3 159 Fisher Creek 9100 51.2 30.4 168 44.7 30.5 147 Northeast Entrance 7350 13.8 9.5 145 17.7 11.8 150 Parker Peak 9400 32.7 18.9 173 28.1 17.0 165 Sylvan Lake 8420 24.3 19.2 127 25.8 21.5 120 Thumb Divide 7980 19.2 14.8 130 18.4 17.9 103 Two Ocean Plateau 9240 36.4 25.6 142 28.4 26.3 108 White Mill 8700 39.9 21.7 184 30.7 22.8 135 Wolverine 7650 20.6 9.2 224 20.1 11.8 170 ----- ----- Basin Index (%) 157 138 WIND RIVER Burroughs Creek 8750 15.6 -M * 17.4 -M * Castle Creek 8400 8.2 -M * 9.7 -M * Cold Springs 9630 9.4 7.1 132 9.8 9.6 102 Deer Park 9700 12.4 14.8 84 15.3 18.8 81 Hobbs Park 10100 17.1 13.5 127 14.6 12.7 115 Kirwin 9550 19.3 9.5 203 17.3 11.1 156 Little Warm 9370 15.7 10.2 154 16.1 12.3 131 Owl Creek 8975 4.3 5.6 77 6.0 5.7 105 South Pass 9040 12.0 14.9 81 8.5 16.7 51 St. Lawrence Alt 8620 3.1 6.8 46 8.5 8.6 99 Togwotee Pass 9580 31.2 21.7 144 31.3 23.4 134 Townsend Creek 8700 7.2 9.1 79 9.2 11.4 81 ----- ----- Basin Index (%) 116 105 BIGHORN BASIN Bald Mtn. 9380 20.5 18.8 109 14.7 16.4 90 Bear Trap Meadow 8200 -M 5.1 * 10.9 8.1 135 Bone Springs Div 9350 18.7 16.1 116 14.4 14.9 97 Grave Springs 8550 7.7 9.0 86 -M 10.1 * Kirwin 9550 19.3 9.5 203 17.3 11.1 156 Marquette 8760 5.8 -M * 9.6 -M * Middle Powder 7760 9.6 11.5 83 -M 11.2 * Owl Creek 8975 4.3 5.6 77 6.0 5.7 105 Powder River Pass 9480 16.2 10.0 162 15.5 12.0 129 Shell Creek 9580 20.9 14.7 142 15.7 13.2 119 Timber Creek 7950 3.4 4.8 71 -M 7.1 * ----- ----- Basin Index (%) 121 116 SHOSHONE RIVER Blackwater 9780 33.2 22.2 150 30.6 19.8 155 Evening Star 9200 39.8 23.9 167 41.7 26.3 159 Marquette 8760 5.8 -M * 9.6 -M * Sylvan Road 7120 13.4 11.1 121 20.3 16.1 126 Younts Peak 8350 -M 14.2 * -M 15.2 * ----- ----- Basin Index (%) 151 149 POWDER RIVER Bear Trap Meadow 8200 -M 5.1 * 10.9 8.1 135 Cloud Peak Reservoir 9860 15.9 14.2 112 14.4 12.7 113 Grave Springs 8550 7.7 9.0 86 -M 10.1 * Hansen Sawmill 8360 9.1 6.3 144 10.4 8.2 127 Middle Powder 7760 9.6 11.5 83 -M 11.2 * Powder River Pass 9480 16.2 10.0 162 15.5 12.0 129 Soldier Park 8720 7.7 -M * 10.2 -M * ----- ----- Basin Index (%) 115 125 TONGUE RIVER Big Goose 7990 8.3 9.1 91 8.7 10.8 81 Bone Springs Div 9350 18.7 16.1 116 14.4 14.9 97 Burgess Junction 7880 10.0 11.4 88 8.5 11.8 72 Dome Lake 8880 14.7 11.6 127 12.0 13.0 92 Little Goose 8870 10.0 -M * 12.1 -M * Sucker Creek 8880 10.9 11.5 95 8.7 13.8 63 Tie Creek 6870 5.0 5.5 91 9.1 11.0 83 ----- ----- Basin Index (%) 104 82 BELLE FOURCHE Cole Canyon 5910 7.7 5.8 133 10.0 8.9 112 ----- ----- Basin Index (%) 133 112 CHEYENNE RIVER BASIN Blind Park 6890 8.1 7.2 112 11.1 11.3 98 North Rapid Creek 6130 7.3 6.8 107 8.7 9.3 94 ----- ----- Basin Index (%) 110 96 UPPER N. PLATTE Arapaho Ridge 10960 19.6 20.0 98 19.2 21.5 89 Blackhall Mtn 9820 27.8 -M * 26.6 -M * Columbine 9160 22.3 23.0 97 23.0 24.6 93 Divide Peak 8880 14.3 19.6 73 17.6 20.7 85 Joe Wright 10120 19.1 20.4 94 28.3 24.8 114 Laprele Creek 8375 6.7 9.5 71 8.0 11.9 67 Med Bow 10500 39.9 -M * 30.8 -M * North French Creek 10130 27.9 28.2 99 27.0 25.8 105 Never Summer 10280 18.7 19.8 94 15.3 -M * Old Battle 10000 25.0 30.0 83 23.7 33.9 70 Rawah 9020 11.5 10.4 111 14.9 13.7 109 Sage Creek Basin 7850 8.4 12.6 67 10.3 14.0 74 Sand Lake 10050 26.5 27.8 95 22.5 23.8 95 South Brush Creek 8440 11.0 12.2 90 11.9 14.7 81 Tower 10500 34.9 44.4 79 26.5 38.3 69 Webber Springs 9250 18.3 23.0 80 21.2 25.8 82 Willow Creek Pass 9540 13.0 11.8 110 13.9 12.9 108 Zirkel 9340 27.3 26.4 103 30.9 27.5 112 ----- ----- Basin Index (%) 90 90 SWEETWATER Deer Park 9700 12.4 14.8 84 15.3 18.8 81 Larsen Creek 9000 11.2 12.1 93 11.3 -M * South Pass 9040 12.0 14.9 81 8.5 16.7 51 ----- ----- Basin Index (%) 85 67 LOWER N. PLATTE Casper Mtn. 7900 7.9 13.6 58 6.8 14.1 48 Laprele Creek 8375 6.7 9.5 71 8.0 11.9 67 Reno Hill 8400 10.1 13.4 75 11.4 14.6 78 Windy Peak 7900 6.6 7.8 85 8.2 10.1 81 ----- ----- Basin Index (%) 71 68 LARAMIE RIVER Brooklyn Lake 10240 24.9 20.3 123 24.8 20.3 122 Cinnabar Park 9574 21.1 20.2 104 24.5 23.2 106 Crow Creek 8330 4.5 6.9 65 10.8 10.3 105 Deadman Hill 10220 20.5 15.7 131 19.4 16.5 118 Rawah 9020 11.5 10.4 111 14.9 13.7 109 Roach 9700 13.7 15.8 87 17.0 18.4 92 ----- ----- Basin Index (%) 108 109 S. PLATTE Black Mountain 8920 10.8 -M * 13.3 -M * Crow Creek 8330 4.5 6.9 65 10.8 10.3 105 Deadman Hill 10220 20.5 15.7 131 19.4 16.5 118 ----- ----- Basin Index (%) 111 113 LITTLE SNAKE RIVER Battle Mountain 7440 6.0 10.5 57 10.3 14.6 71 Divide Peak 8880 14.3 19.6 73 17.6 20.7 85 Elk River 8700 15.1 18.7 81 16.2 19.4 84 Little Snake River 8915 21.1 23.5 90 27.1 28.8 94 Old Battle 10000 25.0 30.0 83 23.7 33.9 70 Sage Creek Basin 7850 8.4 12.6 67 10.3 14.0 74 Sandstone RS 8150 8.9 13.0 68 9.0 17.8 51 Whiskey Park 8950 24.3 26.1 93 24.8 27.0 92 ----- ----- Basin Index (%) 80 79 UPPER GREEN RIVER Big Sandy Opening 9080 13.2 12.4 106 13.0 12.7 102 Blind Bull Sum 8650 32.7 22.6 145 19.5 18.9 103 East Rim Divide 7930 12.3 10.0 123 12.3 11.4 108 Elkhart Park G.S. 9400 12.4 12.1 102 11.8 12.8 92 Gros Ventre Summit 8750 15.7 13.0 121 14.8 12.5 118 Gunsight Pass 9820 16.8 13.4 125 16.1 13.3 121 Kendall R.S. 7740 15.0 11.4 132 15.4 13.8 112 Loomis Park 8240 17.8 14.2 125 18.1 16.8 108 New Fork Lake 8340 11.7 10.4 112 11.2 10.4 108 Pocket Creek 9360 8.8 -M * 9.0 -M * Snider Basin 8060 12.6 12.3 102 14.6 13.8 106 Spring Creek Divide 9000 26.4 22.5 117 24.5 23.1 106 Triple Peak 8500 30.0 21.8 138 30.6 24.5 125 ----- ----- Basin Index (%) 123 110 LOWER GREEN RIVER Blacks Fork Jct 8869 7.4 -M * 8.6 -M * Buck Pasture 9632 11.8 -M * 12.8 -M * EF Blacks Fork GS 9360 10.5 -M * 5.9 -M * Hams Fork 7840 9.2 10.9 84 9.4 11.0 85 Hewinta 9500 7.4 10.9 68 11.0 13.5 81 Hickerson Park 9122 6.7 7.6 88 7.7 9.8 79 Hole-in-Rock 9168 7.1 6.9 103 8.2 9.2 89 Indian Creek 9425 21.5 24.1 89 15.7 21.8 72 Kelley R.S. 8180 13.5 15.0 90 14.4 17.5 82 Spirit Lk 10235 10.3 -M * 11.8 -M * Steel Creek Park 10158 -M 15.4 * 13.4 15.8 85 ----- ----- Basin Index (%) 87 81 UPPER BEAR RIVER Bear River RS 8777 6.5 -M * 10.3 -M * Bug Lake 7987 14.5 18.2 80 15.6 18.8 83 Burts Miller Ranch 8000 4.2 -M * 6.2 -M * Chalk Creek #1 9171 14.5 23.6 61 15.8 24.3 65 Hayden Fork 9130 11.2 15.2 74 15.7 20.3 77 Kelley R.S. 8180 13.5 15.0 90 14.4 17.5 82 Lily Lake 9133 9.2 12.2 75 11.1 16.5 67 Monte Cristo 8932 21.1 26.6 79 21.2 25.1 84 Salt River Summit 7640 11.1 12.9 86 12.8 16.1 80 ----- ----- Basin Index (%) 77 77 ----------------------------------------------------------------------------- -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.