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 SUNDAY: MARCH 18 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 16.9 14.6 116 18.6 18.9 98 Black Bear 8170 39.2 32.2 122 36.3 34.2 106 Blind Bull Sum 8650 29.5 20.3 145 17.8 17.5 102 Cottonwood Creek 7670 19.9 19.5 102 22.1 21.7 102 East Rim Divide 7930 11.1 9.5 117 10.9 10.5 104 Grand Targhee 9260 41.3 32.8 126 26.8 26.8 100 Granite Creek 6770 16.2 15.0 108 18.3 18.0 102 Grassy Lake 7265 29.0 29.1 100 32.1 32.3 99 Gros Ventre Summit 8750 13.1 11.4 115 12.7 11.3 112 Gunsight Pass 9820 14.5 11.9 122 14.1 12.0 118 Lewis Lake Divide 7850 34.6 27.5 126 35.4 31.8 111 Phillips Bench 8200 23.2 22.2 105 23.8 25.1 95 Salt River Summit 7640 9.8 11.9 82 11.3 14.8 76 Snake River Station 6920 17.0 15.2 112 21.6 20.2 107 Spring Creek Divide 9000 23.6 20.7 114 22.1 21.2 104 Thumb Divide 7980 17.5 13.9 126 17.0 16.3 104 Togwotee Pass 9580 28.6 20.4 140 28.9 21.5 134 Two Ocean Plateau 9240 34.3 23.8 144 27.1 24.1 112 Willow Creek 8080 29.8 25.3 118 31.1 29.6 105 Younts Peak 8350 -M 13.2 * -M 14.0 * ----- ----- Basin Index (%) 119 105 MADISON-GALLATIN Black Bear 8170 39.2 32.2 122 36.3 34.2 106 Canyon 7870 16.0 11.7 137 18.1 14.4 126 Madison Plateau 7750 24.9 20.0 124 24.6 23.4 105 West Yellowstone 6700 12.8 9.9 129 15.8 12.6 125 Whiskey Creek 6800 15.2 13.9 109 17.3 18.0 96 ----- ----- Basin Index (%) 123 109 YELLOWSTONE Beartooth Lake 9360 36.0 19.0 189 31.1 17.5 178 Burnt Mtn 5880 6.8 4.5 151 13.1 10.6 124 Canyon 7870 16.0 11.7 137 18.1 14.4 126 Cole Creek 7850 13.0 11.8 110 8.3 10.5 79 Evening Star 9200 36.9 21.9 168 -M 24.2 * Fisher Creek 9100 48.0 28.1 171 42.1 28.3 149 Northeast Entrance 7350 13.3 8.9 149 16.5 10.9 151 Parker Peak 9400 30.4 17.5 174 26.7 15.5 172 Sylvan Lake 8420 22.6 17.9 126 24.2 19.7 123 Thumb Divide 7980 17.5 13.9 126 17.0 16.3 104 Two Ocean Plateau 9240 34.3 23.8 144 27.1 24.1 112 White Mill 8700 37.5 19.7 190 28.7 21.0 137 Wolverine 7650 20.1 8.8 228 19.1 10.8 177 ----- ----- Basin Index (%) 160 136 WIND RIVER Burroughs Creek 8750 15.2 -M * 16.7 -M * Castle Creek 8400 7.9 -M * 9.1 -M * Cold Springs 9630 8.8 6.2 142 8.9 8.4 106 Deer Park 9700 10.4 12.8 81 12.9 16.9 76 Hobbs Park 10100 14.5 11.5 126 12.3 10.9 113 Kirwin 9550 18.0 8.3 217 16.3 9.8 166 Little Warm 9370 14.2 9.1 156 14.7 11.0 134 Owl Creek 8975 3.7 4.6 80 5.4 4.9 110 South Pass 9040 10.1 13.4 75 -M 15.1 * St. Lawrence Alt 8620 2.9 6.0 48 7.3 7.4 99 Togwotee Pass 9580 28.6 20.4 140 28.9 21.5 134 Townsend Creek 8700 6.2 8.0 78 7.7 9.9 78 ----- ----- Basin Index (%) 117 114 BIGHORN BASIN Bald Mtn. 9380 18.5 16.4 113 13.0 14.6 89 Bear Trap Meadow 8200 8.3 4.9 169 8.7 6.9 126 Bone Springs Div 9350 16.6 13.9 119 12.4 13.2 94 Grave Springs 8550 5.8 8.0 72 4.5 8.8 51 Kirwin 9550 18.0 8.3 217 16.3 9.8 166 Marquette 8760 5.1 -M * 8.7 -M * Middle Powder 7760 7.7 9.5 81 -M 9.8 * Owl Creek 8975 3.7 4.6 80 5.4 4.9 110 Powder River Pass 9480 14.5 9.0 161 13.4 10.6 126 Shell Creek 9580 18.4 12.7 145 13.8 11.7 118 Timber Creek 7950 2.9 4.2 69 -M 6.0 * ----- ----- Basin Index (%) 125 109 SHOSHONE RIVER Blackwater 9780 31.5 20.5 154 29.2 17.9 163 Evening Star 9200 36.9 21.9 168 -M 24.2 * Marquette 8760 5.1 -M * 8.7 -M * Sylvan Road 7120 13.3 10.3 129 19.5 15.0 130 Younts Peak 8350 -M 13.2 * -M 14.0 * ----- ----- Basin Index (%) 155 148* POWDER RIVER Bear Trap Meadow 8200 8.3 4.9 169 8.7 6.9 126 Cloud Peak Reservoir 9860 13.4 12.6 106 11.9 11.0 108 Grave Springs 8550 5.8 8.0 72 4.5 8.8 51 Hansen Sawmill 8360 6.7 5.5 122 8.1 7.0 116 Middle Powder 7760 7.7 9.5 81 -M 9.8 * Powder River Pass 9480 14.5 9.0 161 13.4 10.6 126 Soldier Park 8720 5.4 -M * 8.1 -M * ----- ----- Basin Index (%) 114 105 TONGUE RIVER Big Goose 7990 6.4 7.6 84 6.8 8.9 76 Bone Springs Div 9350 16.6 13.9 119 12.4 13.2 94 Burgess Junction 7880 8.0 9.4 85 7.0 10.3 68 Dome Lake 8880 12.7 10.0 127 9.7 11.2 87 Little Goose 8870 7.8 -M * 9.9 -M * Sucker Creek 8880 8.8 10.7 82 6.7 12.0 56 Tie Creek 6870 3.7 4.9 76 7.5 9.6 78 ----- ----- Basin Index (%) 99 77 BELLE FOURCHE Cole Canyon 5910 5.9 5.5 107 7.6 7.8 97 ----- ----- Basin Index (%) 107 97 CHEYENNE RIVER BASIN Blind Park 6890 7.0 7.2 97 9.8 10.4 94 North Rapid Creek 6130 6.8 6.4 106 7.4 8.5 87 ----- ----- Basin Index (%) 101 91 UPPER N. PLATTE Arapaho Ridge 10960 17.0 18.0 94 16.7 19.4 86 Blackhall Mtn 9820 23.8 -M * 23.2 -M * Columbine 9160 20.2 21.8 93 20.2 22.6 89 Divide Peak 8880 12.3 17.4 71 15.8 18.8 84 Joe Wright 10120 14.8 18.9 78 24.0 22.5 107 Laprele Creek 8375 5.8 9.0 64 7.1 10.6 67 Med Bow 10500 34.9 -M * 28.7 -M * North French Creek 10130 23.5 24.6 96 23.0 23.4 98 Never Summer 10280 15.7 17.6 89 12.7 -M * Old Battle 10000 21.9 26.2 84 21.3 31.0 69 Rawah 9020 9.5 9.2 103 12.9 11.8 109 Sage Creek Basin 7850 8.8 11.6 76 9.1 12.9 71 Sand Lake 10050 22.5 24.2 93 19.0 21.3 89 South Brush Creek 8440 8.8 11.1 79 10.0 13.1 76 Tower 10500 29.5 39.5 75 26.2 35.3 74 Webber Springs 9250 16.8 20.9 80 19.0 23.5 81 Willow Creek Pass 9540 11.2 10.8 104 12.0 11.6 103 Zirkel 9340 24.2 25.8 94 27.4 25.1 109 ----- ----- Basin Index (%) 86 87 SWEETWATER Deer Park 9700 10.4 12.8 81 12.9 16.9 76 Larsen Creek 9000 10.3 11.0 94 10.3 -M * South Pass 9040 10.1 13.4 75 -M 15.1 * ----- ----- Basin Index (%) 83 76* LOWER N. PLATTE Casper Mtn. 7900 7.0 12.0 58 5.6 12.5 45 Laprele Creek 8375 5.8 9.0 64 7.1 10.6 67 Reno Hill 8400 8.4 11.8 71 9.5 12.7 75 Windy Peak 7900 5.6 6.9 81 7.1 8.9 80 ----- ----- Basin Index (%) 68 66 LARAMIE RIVER Brooklyn Lake 10240 21.0 17.5 120 21.4 18.1 118 Cinnabar Park 9574 19.1 17.8 107 21.8 21.1 103 Crow Creek 8330 3.5 7.0 50 9.5 8.7 109 Deadman Hill 10220 17.0 13.7 124 16.3 14.7 111 Rawah 9020 9.5 9.2 103 12.9 11.8 109 Roach 9700 11.8 13.8 86 14.9 16.6 90 ----- ----- Basin Index (%) 104 106 S. PLATTE Black Mountain 8920 8.5 -M * 11.1 -M * Crow Creek 8330 3.5 7.0 50 9.5 8.7 109 Deadman Hill 10220 17.0 13.7 124 16.3 14.7 111 ----- ----- Basin Index (%) 99 110 LITTLE SNAKE RIVER Battle Mountain 7440 6.2 11.2 55 8.7 13.4 65 Divide Peak 8880 12.3 17.4 71 15.8 18.8 84 Elk River 8700 13.5 17.3 78 14.0 17.7 79 Little Snake River 8915 18.6 20.8 89 24.0 26.2 92 Old Battle 10000 21.9 26.2 84 21.3 31.0 69 Sage Creek Basin 7850 8.8 11.6 76 9.1 12.9 71 Sandstone RS 8150 7.5 11.8 64 7.3 16.5 44 Whiskey Park 8950 21.0 24.1 87 22.1 24.7 89 ----- ----- Basin Index (%) 78 76 UPPER GREEN RIVER Big Sandy Opening 9080 11.6 11.4 102 11.6 11.6 100 Blind Bull Sum 8650 29.5 20.3 145 17.8 17.5 102 East Rim Divide 7930 11.1 9.5 117 10.9 10.5 104 Elkhart Park G.S. 9400 11.1 10.5 106 10.7 11.7 91 Gros Ventre Summit 8750 13.1 11.4 115 12.7 11.3 112 Gunsight Pass 9820 14.5 11.9 122 14.1 12.0 118 Kendall R.S. 7740 13.7 11.1 123 13.9 12.8 109 Loomis Park 8240 16.0 13.2 121 16.6 15.4 108 New Fork Lake 8340 11.0 9.2 120 10.0 9.6 104 Pocket Creek 9360 8.0 -M * 7.9 -M * Snider Basin 8060 12.0 10.9 110 13.6 12.7 107 Spring Creek Divide 9000 23.6 20.7 114 22.1 21.2 104 Triple Peak 8500 26.1 19.2 136 27.8 22.5 124 ----- ----- Basin Index (%) 121 108 LOWER GREEN RIVER Blacks Fork Jct 8869 6.8 -M * 8.1 -M * Buck Pasture 9632 10.5 -M * 11.4 -M * EF Blacks Fork GS 9360 9.9 -M * -M -M * Hams Fork 7840 8.7 10.2 85 8.5 10.0 85 Hewinta 9500 7.4 9.6 77 10.1 12.2 83 Hickerson Park 9122 7.2 6.6 109 6.8 8.7 78 Hole-in-Rock 9168 6.6 6.5 102 7.2 8.2 88 Indian Creek 9425 19.3 21.0 92 14.1 19.8 71 Kelley R.S. 8180 12.2 13.2 92 13.3 16.0 83 Spirit Lk 10235 8.8 -M * 10.1 -M * Steel Creek Park 10158 12.2 13.3 92 11.9 14.1 84 ----- ----- Basin Index (%) 92 81 UPPER BEAR RIVER Bear River RS 8777 7.7 -M * 9.4 -M * Bug Lake 7987 14.1 16.5 85 14.4 17.2 84 Burts Miller Ranch 8000 4.9 -M * 5.8 -M * Chalk Creek #1 9171 13.3 20.8 64 14.3 21.9 65 Hayden Fork 9130 10.9 14.2 77 13.8 18.3 75 Kelley R.S. 8180 12.2 13.2 92 13.3 16.0 83 Lily Lake 9133 8.2 11.4 72 10.1 14.8 68 Monte Cristo 8932 19.0 24.1 79 17.8 22.8 78 Salt River Summit 7640 9.8 11.9 82 11.3 14.8 76 ----- ----- Basin Index (%) 78 76 ----------------------------------------------------------------------------- -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.