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 22 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .0 .0 * 26.5 24.7 107 Black Bear 8170 41.5 32.7 127 48.3 44.9 108 Blind Bull Sum 8650 -M 18.8 * 25.2 23.4 108 Cottonwood Creek 7670 1.3 4.4 30 32.3 30.3 107 East Rim Divide 7930 .0 .0 * 16.2 14.3 113 Grand Targhee 9260 45.2 41.6 109 41.2 37.1 111 Granite Creek 6770 .0 .0 * 27.6 23.1 119 Grassy Lake 7265 10.9 15.4 71 42.1 42.1 100 Gros Ventre Summit 8750 3.7 4.2 88 18.8 16.3 115 Gunsight Pass 9820 12.4 9.3 133 21.6 17.8 121 Lewis Lake Divide 7850 24.0 21.0 114 45.8 41.2 111 Phillips Bench 8200 18.3 17.6 104 34.3 33.1 104 Salt River Summit 7640 .0 .0 * 16.0 20.1 80 Snake River Station 6920 .0 .0 * 27.9 26.7 104 Spring Creek Divide 9000 19.3 19.0 102 30.1 28.3 106 Thumb Divide 7980 .0 .3 0* 22.7 22.9 99 Togwotee Pass 9580 28.8 22.8 126 39.8 29.9 133 Two Ocean Plateau 9240 33.1 28.0 118 35.3 33.1 107 Willow Creek 8080 12.0 14.7 82 44.3 41.2 108 Younts Peak 8350 -M 11.1 * -M 19.8 * ----- ----- Basin Index (%) 108 108 MADISON-GALLATIN Black Bear 8170 41.5 32.7 127 48.3 44.9 108 Canyon 7870 2.9 1.1 264* 22.6 20.0 113 Madison Plateau 7750 17.3 13.3 130 33.6 31.8 106 West Yellowstone 6700 .0 .0 * 21.5 17.7 121 Whiskey Creek 6800 5.1 4.3 119 24.5 24.5 100 ----- ----- Basin Index (%) 130 108 YELLOWSTONE Beartooth Lake 9360 36.7 21.1 174 39.7 24.3 163 Burnt Mtn 5880 .1 .0 * 21.5 19.3 111 Canyon 7870 2.9 1.1 264* 22.6 20.0 113 Cole Creek 7850 10.2 15.2 67 19.4 19.7 98 Evening Star 9200 34.5 23.0 150 50.4 33.6 150 Fisher Creek 9100 50.5 32.2 157 53.2 38.6 138 Northeast Entrance 7350 .1 .0 * 21.4 15.7 136 Parker Peak 9400 24.9 19.4 128 34.4 22.6 152 Sylvan Lake 8420 9.7 14.2 68 32.8 27.9 118 Thumb Divide 7980 .0 .3 0* 22.7 22.9 99 Two Ocean Plateau 9240 33.1 28.0 118 35.3 33.1 107 White Mill 8700 35.2 21.6 163 36.6 29.2 125 Wolverine 7650 .0 .0 * 24.1 15.7 154 ----- ----- Basin Index (%) 135 128 WIND RIVER Burroughs Creek 8750 .0 -M * 22.7 -M * Castle Creek 8400 .0 -M * 13.7 -M * Cold Springs 9630 .0 .0 * 13.9 14.5 96 Deer Park 9700 6.0 9.5 63 20.8 26.1 80 Hobbs Park 10100 11.5 12.2 94 19.6 19.5 101 Kirwin 9550 10.8 7.5 144 23.0 16.1 143 Little Warm 9370 4.7 1.5 313 20.8 17.5 119 Owl Creek 8975 -M .0 * 11.1 9.8 113 South Pass 9040 .1 4.9 2 13.1 22.6 58 St. Lawrence Alt 8620 .0 .0 * 11.9 13.6 88 Togwotee Pass 9580 28.8 22.8 126 39.8 29.9 133 Townsend Creek 8700 .0 .0 * 13.8 17.2 80 ----- ----- Basin Index (%) 106 101 BIGHORN BASIN Bald Mtn. 9380 16.1 18.4 88 20.8 22.2 94 Bear Trap Meadow 8200 .0 .0 * 12.9 12.8 101 Bone Springs Div 9350 12.6 13.7 92 19.9 21.1 94 Grave Springs 8550 .0 .9 0* 9.1 15.1 60 Kirwin 9550 10.8 7.5 144 23.0 16.1 143 Marquette 8760 .2 -M * 15.9 -M * Middle Powder 7760 .0 3.5 0 9.3 16.4 57 Owl Creek 8975 -M .0 * 11.1 9.8 113 Powder River Pass 9480 6.3 4.0 158 19.2 17.5 110 Shell Creek 9580 15.9 14.6 109 19.9 18.7 106 Timber Creek 7950 .0 .0 * 6.7 12.4 54 ----- ----- Basin Index (%) 99 94 SHOSHONE RIVER Blackwater 9780 30.9 23.8 130 37.1 26.2 142 Evening Star 9200 34.5 23.0 150 50.4 33.6 150 Marquette 8760 .2 -M * 15.9 -M * Sylvan Road 7120 .1 .0 * 25.3 20.5 123 Younts Peak 8350 -M 11.1 * -M 19.8 * ----- ----- Basin Index (%) 140* 140 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 12.9 12.8 101 Cloud Peak Reservoir 9860 10.0 13.8 72 20.1 19.8 102 Grave Springs 8550 .0 .9 0* 9.1 15.1 60 Hansen Sawmill 8360 .0 .0 * 14.8 13.1 113 Middle Powder 7760 .0 3.5 0 9.3 16.4 57 Powder River Pass 9480 6.3 4.0 158 19.2 17.5 110 Soldier Park 8720 .1 -M * 14.0 -M * ----- ----- Basin Index (%) 73* 90 TONGUE RIVER Big Goose 7990 .0 2.9 0 13.1 17.3 76 Bone Springs Div 9350 12.6 13.7 92 19.9 21.1 94 Burgess Junction 7880 1.6 6.9 23 12.9 17.2 75 Dome Lake 8880 5.0 4.7 106 18.4 19.2 96 Little Goose 8870 .1 -M * 16.9 -M * Sucker Creek 8880 .0 7.6 0 13.8 20.5 67 Tie Creek 6870 .1 .0 * 13.5 17.4 78 ----- ----- Basin Index (%) 54 81 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 13.9 15.0 93 ----- ----- Basin Index (%) * 93 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 14.9 17.0 88 North Rapid Creek 6130 -M .0 * 13.4 14.7 91 ----- ----- Basin Index (%) * 89 UPPER N. PLATTE Arapaho Ridge 10960 12.1 16.5 73 25.6 28.5 90 Blackhall Mtn 9820 10.7 -M * 30.9 -M * Columbine 9160 .0 .6 0* 29.8 30.7 97 Divide Peak 8880 .0 3.9 0 21.2 26.6 80 Joe Wright 10120 12.4 20.2 61 35.8 33.0 108 Laprele Creek 8375 .1 .0 * 11.5 17.0 68 Med Bow 10500 30.6 -M * 39.3 -M * North French Creek 10130 17.8 28.2 63 32.1 33.9 95 Never Summer 10280 17.7 19.2 92 21.1 -M * Old Battle 10000 19.0 31.8 60 27.6 42.3 65 Rawah 9020 .2 .3 67* 18.5 18.9 98 Sage Creek Basin 7850 -M .0 * 12.1 17.5 69 Sand Lake 10050 21.3 27.0 79 27.7 32.1 86 South Brush Creek 8440 .0 .0 * 14.0 20.3 69 Tower 10500 29.0 46.9 62 42.9 48.1 89 Webber Springs 9250 .0 9.9 0 24.5 32.2 76 Willow Creek Pass 9540 3.7 8.2 45 17.6 17.5 101 Zirkel 9340 -M 6.5 * 35.4 33.4 106 ----- ----- Basin Index (%) 63 87 SWEETWATER Deer Park 9700 6.0 9.5 63 20.8 26.1 80 Larsen Creek 9000 .0 3.0 0 14.5 -M * South Pass 9040 .1 4.9 2 13.1 22.6 58 ----- ----- Basin Index (%) 35 70 LOWER N. PLATTE Casper Mtn. 7900 .0 2.9 0 10.7 20.6 52 Laprele Creek 8375 .1 .0 * 11.5 17.0 68 Reno Hill 8400 .1 1.7 6 16.3 21.6 75 Windy Peak 7900 .1 .0 * 13.5 15.1 89 ----- ----- Basin Index (%) 7 70 LARAMIE RIVER Brooklyn Lake 10240 8.4 14.6 58 29.4 27.4 107 Cinnabar Park 9574 4.3 10.5 41 28.1 29.6 95 Crow Creek 8330 .0 .0 * 14.6 15.2 96 Deadman Hill 10220 7.5 15.3 49 24.1 23.2 104 Rawah 9020 .2 .3 67* 18.5 18.9 98 Roach 9700 .6 10.0 6 20.9 24.8 84 ----- ----- Basin Index (%) 41 97 S. PLATTE Black Mountain 8920 -M -M * 16.8 -M * Crow Creek 8330 .0 .0 * 14.6 15.2 96 Deadman Hill 10220 7.5 15.3 49 24.1 23.2 104 ----- ----- Basin Index (%) 49* 101 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 13.6 18.7 73 Divide Peak 8880 .0 3.9 0 21.2 26.6 80 Elk River 8700 .0 .0 * 19.5 24.7 79 Little Snake River 8915 .0 11.0 0 31.3 35.2 89 Old Battle 10000 19.0 31.8 60 27.6 42.3 65 Sage Creek Basin 7850 -M .0 * 12.1 17.5 69 Sandstone RS 8150 -M .0 * 12.0 22.6 53 Whiskey Park 8950 1.5 20.0 8 29.4 34.0 86 ----- ----- Basin Index (%) 31 75 UPPER GREEN RIVER Big Sandy Opening 9080 -M 1.1 * 16.3 17.0 96 Blind Bull Sum 8650 -M 18.8 * 25.2 23.4 108 East Rim Divide 7930 .0 .0 * 16.2 14.3 113 Elkhart Park G.S. 9400 .6 4.7 13 16.4 17.0 96 Gros Ventre Summit 8750 3.7 4.2 88 18.8 16.3 115 Gunsight Pass 9820 12.4 9.3 133 21.6 17.8 121 Kendall R.S. 7740 .0 .0 * 19.4 16.9 115 Loomis Park 8240 .2 1.0 20* 22.5 20.7 109 New Fork Lake 8340 .0 .0 * 15.9 13.7 116 Pocket Creek 9360 -M -M * 12.1 -M * Snider Basin 8060 .0 .0 * 17.9 16.9 106 Spring Creek Divide 9000 19.3 19.0 102 30.1 28.3 106 Triple Peak 8500 11.6 6.4 181 37.9 30.4 125 ----- ----- Basin Index (%) 107* 111 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 12.2 -M * Buck Pasture 9632 .0 -M * 18.5 -M * EF Blacks Fork GS 9360 .0 -M * 12.7 -M * Hams Fork 7840 -M .0 * 13.6 14.6 93 Hewinta 9500 .0 .0 * 15.4 17.9 86 Hickerson Park 9122 .4 .0 * 12.8 13.6 94 Hole-in-Rock 9168 .0 .0 * 13.3 13.2 101 Indian Creek 9425 11.0 17.0 65 20.5 27.2 75 Kelley R.S. 8180 .0 1.2 0* 18.4 22.0 84 Spirit Lk 10235 1.3 -M * 17.2 -M * Steel Creek Park 10158 8.0 13.7 58 19.5 21.2 92 ----- ----- Basin Index (%) 61* 88 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 13.7 -M * Bug Lake 7987 .0 2.5 0 20.2 23.7 85 Burts Miller Ranch 8000 .1 -M * 7.7 -M * Chalk Creek #1 9171 .0 13.7 0 20.0 31.1 64 Hayden Fork 9130 .2 .0 * 20.4 26.0 78 Kelley R.S. 8180 .0 1.2 0* 18.4 22.0 84 Lily Lake 9133 .0 .0 * 14.7 21.5 68 Monte Cristo 8932 5.9 12.9 46 26.9 31.8 85 Salt River Summit 7640 .0 .0 * 16.0 20.1 80 ----- ----- Basin Index (%) 20* 78 ----------------------------------------------------------------------------- -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.