Supercell over Laramie
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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: MAY 6 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 1.2 6.6 18 21.3 23.3 91 Black Bear 8170 27.4 37.1 74 37.2 42.5 88 Blind Bull Sum 8650 25.2 22.7 111 17.8 21.8 82 Cottonwood Creek 7670 14.0 13.7 102 29.0 28.1 103 East Rim Divide 7930 .0 7.1 0 12.6 13.2 95 Grand Targhee 9260 40.9 46.2 89 34.5 35.6 97 Granite Creek 6770 .1 7.1 1 19.5 21.8 89 Grassy Lake 7265 15.9 27.3 58 36.9 39.9 92 Gros Ventre Summit 8750 6.9 10.5 66 12.0 15.0 80 Gunsight Pass 9820 12.1 11.7 103 16.4 16.4 100 Lewis Lake Divide 7850 16.5 29.4 56 33.5 39.2 85 Phillips Bench 8200 15.5 23.9 65 27.9 31.3 89 Salt River Summit 7760 1.8 6.7 27 17.4 18.7 93 Snake River Station 6920 .0 4.6 0 23.4 25.2 93 Spring Creek Divide 9000 23.0 24.1 95 25.4 26.7 95 Thumb Divide 7980 .0 10.0 0 16.0 21.4 75 Togwotee Pass 9580 20.6 24.9 83 27.0 28.0 96 Two Ocean Plateau 9240 24.2 29.8 81 26.2 30.7 85 Willow Creek 8380 17.9 21.8 82 36.5 38.5 95 Younts Peak 8350 .7 15.7 4 15.4 18.1 85 ----- ----- Basin Index (%) 69 91 MADISON-GALLATIN Black Bear 8170 27.4 37.1 74 37.2 42.5 88 Canyon 7870 2.1 8.5 25 14.3 18.4 78 Madison Plateau 7750 13.3 20.7 64 24.4 29.5 83 West Yellowstone 6700 .0 .0 * 14.6 16.3 90 Whiskey Creek 6800 5.8 12.4 47 18.0 22.7 79 ----- ----- Basin Index (%) 62 84 YELLOWSTONE Beartooth Lake 9360 17.6 22.8 77 19.6 22.4 88 Burnt Mtn 5880 .0 .0 * 13.8 16.4 84 Canyon 7870 2.1 8.5 25 14.3 18.4 78 Cole Creek 7850 10.9 16.9 64 -M 16.9 * Evening Star 9200 22.5 25.0 90 30.9 31.1 99 Fisher Creek 9100 25.1 33.2 76 27.4 35.8 77 Northeast Entrance 7350 .0 1.0 0 12.3 14.1 87 Parker Peak 9400 17.1 21.5 80 22.9 20.6 111 Sylvan Lake 8420 9.5 18.5 51 25.2 25.6 98 Thumb Divide 7980 .0 10.0 0 16.0 21.4 75 Two Ocean Plateau 9240 24.2 29.8 81 26.2 30.7 85 White Mill 8700 18.6 24.1 77 22.8 26.8 85 Wolverine 7650 .0 .6 0* 12.8 14.1 91 ----- ----- Basin Index (%) 70 88 WIND RIVER Burroughs Creek 8750 4.3 -M * 15.2 -M * Castle Creek 8400 .0 -M * 9.0 -M * Cold Springs 9630 5.8 1.5 387 13.1 13.0 101 Deer Park 9700 18.2 14.9 122 23.1 24.1 96 Hobbs Park 10100 19.7 15.9 124 21.8 17.3 126 Kirwin 9550 11.7 10.7 109 16.5 14.4 115 Little Warm 9370 5.9 7.5 79 12.9 15.8 82 Owl Creek 8975 .8 .6 133 8.9 8.3 107 South Pass 9040 15.7 13.4 117 17.8 20.9 85 St. Lawrence Alt 8620 3.9 1.6 244 13.6 12.0 113 Togwotee Pass 9580 20.6 24.9 83 27.0 28.0 96 Townsend Creek 8700 11.2 5.7 196 18.7 15.4 121 ----- ----- Basin Index (%) 117 102 BIGHORN BASIN Bald Mtn. 9380 15.1 20.4 74 15.1 20.2 75 Bear Trap Meadow 8200 .6 .2 300* 9.9 11.1 89 Bone Springs Div 9350 12.7 16.3 78 14.2 18.8 76 Grave Springs 8550 8.1 8.8 92 10.3 13.5 76 Kirwin 9550 11.7 10.7 109 16.5 14.4 115 Marquette 8760 6.7 -M * 13.9 -M * Middle Powder 7760 11.2 11.2 100 12.1 14.7 82 Owl Creek 8975 .8 .6 133 8.9 8.3 107 Powder River Pass 9480 5.9 9.1 65 11.5 15.6 74 Shell Creek 9580 13.1 16.3 80 13.1 16.8 78 Timber Creek 7950 2.8 2.1 133 14.2 10.6 134 ----- ----- Basin Index (%) 86 87 SHOSHONE RIVER Blackwater 9780 21.1 25.7 82 27.1 24.1 112 Evening Star 9200 22.5 25.0 90 30.9 31.1 99 Marquette 8760 6.7 -M * 13.9 -M * Sylvan Road 7120 .0 3.3 0 16.1 18.9 85 Younts Peak 8350 .7 15.7 4 15.4 18.1 85 ----- ----- Basin Index (%) 64 97 POWDER RIVER Bear Trap Meadow 8200 .6 .2 300* 9.9 11.1 89 Cloud Peak Reservoir 9860 12.8 16.4 78 17.7 17.3 102 Grave Springs 8550 8.1 8.8 92 10.3 13.5 76 Hansen Sawmill 8360 1.4 1.6 88 10.9 11.3 96 Middle Powder 7760 11.2 11.2 100 12.1 14.7 82 Powder River Pass 9480 5.9 9.1 65 11.5 15.6 74 Soldier Park 8720 .1 -M * 11.0 -M * ----- ----- Basin Index (%) 85 87 TONGUE RIVER Big Goose 7990 8.5 9.9 86 14.0 14.9 94 Bone Springs Div 9350 12.7 16.3 78 14.2 18.8 76 Burgess Junction 7880 10.1 11.6 87 13.6 15.3 89 Dome Lake 8880 9.6 11.3 85 14.9 17.0 88 Little Goose 8870 10.5 -M * 16.4 -M * Sucker Creek 8880 9.7 12.0 81 15.6 18.0 87 Tie Creek 6870 .0 2.2 0 12.3 15.0 82 ----- ----- Basin Index (%) 80 85 BELLE FOURCHE Cole Canyon 5910 .2 .0 * 11.3 12.8 88 ----- ----- Basin Index (%) * 88 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 12.0 14.9 81 North Rapid Creek 6130 .0 .0 * -M 12.8 * ----- ----- Basin Index (%) * 81 UPPER N. PLATTE Arapaho Ridge 10960 27.2 22.3 122 29.2 26.8 109 Blackhall Mtn 9820 34.8 -M * 36.3 -M * Columbine 9160 17.7 15.8 112 29.7 29.2 102 Divide Peak 8880 18.8 16.8 112 30.4 24.9 122 Joe Wright 10120 -M 22.8 * -M 30.7 * Laprele Creek 8375 7.2 4.9 147 15.8 15.5 102 Med Bow 10500 37.9 -M * 38.0 -M * North French Creek 10130 31.1 32.8 95 33.1 31.5 105 Never Summer 10280 22.2 22.0 101 20.8 -M * Old Battle 10000 36.6 35.3 104 36.4 40.0 91 Rawah 9020 9.9 4.2 236 22.4 17.7 127 Sage Creek Basin 7850 8.7 .4 2175* 15.9 16.6 96 Sand Lake 10050 33.7 31.7 106 33.4 29.7 112 South Brush Creek 8440 6.8 7.1 96 19.0 18.4 103 Tower 10500 45.6 51.2 89 45.0 45.7 98 Webber Springs 9250 22.4 20.7 108 31.3 30.5 103 Willow Creek Pass 9540 17.4 14.4 121 19.0 16.1 118 Zirkel 9340 24.1 20.5 118 35.4 31.7 112 ----- ----- Basin Index (%) 110 106 SWEETWATER Deer Park 9700 18.2 14.9 122 23.1 24.1 96 Larsen Creek 9000 2.7 7.7 35 16.1 -M * South Pass 9040 15.7 13.4 117 17.8 20.9 85 ----- ----- Basin Index (%) 102 91 LOWER N. PLATTE Casper Mtn. 7900 18.6 12.0 155 20.4 18.8 109 Laprele Creek 8375 7.2 4.9 147 15.8 15.5 102 Reno Hill 8400 17.4 11.9 146 24.4 19.5 125 Windy Peak 7900 8.3 2.4 346 15.9 13.4 119 ----- ----- Basin Index (%) 165 114 LARAMIE RIVER Brooklyn Lake 10240 25.0 22.5 111 28.8 25.3 114 Cinnabar Park 9574 21.7 18.2 119 28.3 27.7 102 Crow Creek 8330 -M .0 * -M 13.9 * Deadman Hill 10220 23.1 19.0 122 24.4 21.2 115 Rawah 9020 9.9 4.2 236 22.4 17.7 127 Roach 9700 21.2 16.8 126 27.4 22.8 120 ----- ----- Basin Index (%) 125 114 S. PLATTE Black Mountain 8920 12.7 -M * 21.8 -M * Crow Creek 8330 -M .0 * -M 13.9 * Deadman Hill 10220 23.1 19.0 122 24.4 21.2 115 ----- ----- Basin Index (%) 122* 115* LITTLE SNAKE RIVER Battle Mountain 7440 .1 .0 * 19.9 17.5 114 Divide Peak 8880 18.8 16.8 112 30.4 24.9 122 Elk River 8700 11.1 10.7 104 22.2 23.3 95 Little Snake River 8915 23.1 21.2 109 38.2 33.5 114 Old Battle 10000 36.6 35.3 104 36.4 40.0 91 Sage Creek Basin 7850 8.7 .4 2175* 15.9 16.6 96 Sandstone RS 8150 4.9 3.6 136 16.0 21.2 75 Whiskey Park 8950 28.0 27.1 103 34.3 32.2 107 ----- ----- Basin Index (%) 114 102 UPPER GREEN RIVER Big Sandy Opening 9080 9.4 8.8 107 14.7 15.6 94 Blind Bull Sum 8650 25.2 22.7 111 17.8 21.8 82 East Rim Divide 7930 .0 7.1 0 12.6 13.2 95 Elkhart Park G.S. 9400 7.2 10.1 71 13.5 15.4 88 Gros Ventre Summit 8750 6.9 10.5 66 12.0 15.0 80 Gunsight Pass 9820 12.1 11.7 103 16.4 16.4 100 Kendall R.S. 7740 -M 1.4 * 13.0 15.8 82 Loomis Park 8240 4.4 8.9 49 17.9 19.3 93 New Fork Lake 8340 .1 4.5 2 12.5 12.5 100 Pocket Creek 9360 7.9 -M * 12.0 -M * Snider Basin 8060 .5 8.0 6 15.1 15.9 95 Spring Creek Divide 9000 23.0 24.1 95 25.4 26.7 95 Triple Peak 8500 15.2 15.7 97 29.0 28.5 102 ----- ----- Basin Index (%) 79 93 LOWER GREEN RIVER Blacks Fork Jct 8870 5.3 -M * 14.8 -M * Buck Pasture 9700 10.0 -M * 20.2 -M * EF Blacks Fork GS 9360 5.3 -M * 14.4 -M * Hams Fork 7840 .0 .7 0* 12.2 13.4 91 Hewinta 9519 6.7 3.7 181 16.8 16.7 101 Hickerson Park 9145 7.9 2.2 359 16.2 12.4 131 Hole-in-Rock 9150 2.5 1.3 192 15.8 12.0 132 Indian Creek 9425 17.7 21.5 82 20.6 25.5 81 Kelley R.S. 8180 6.6 9.5 69 17.3 20.6 84 Spirit Lk 10235 19.1 -M * 23.1 -M * Steel Creek Park 10200 19.1 17.5 109 22.9 19.7 116 ----- ----- Basin Index (%) 107 101 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 14.2 -M * Bug Lake 7950 9.6 13.1 73 21.1 22.2 95 Burts Miller Ranch 8000 .0 -M * 7.2 -M * Chalk Creek #1 8993 14.8 22.8 65 25.2 29.2 86 Hayden Fork 9212 3.7 7.6 49 22.8 24.4 93 Kelley R.S. 8180 6.6 9.5 69 17.3 20.6 84 Lily Lake 9156 7.6 8.6 88 16.7 20.1 83 Monte Cristo 8960 22.3 24.0 93 31.3 30.0 104 Salt River Summit 7760 1.8 6.7 27 17.4 18.7 93 ----- ----- Basin Index (%) 72 92 ----------------------------------------------------------------------------- -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.