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 THURSDAY: MAY 5 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 2.3 7.2 32 21.3 23.2 92 Black Bear 8170 28.1 37.2 76 37.1 42.3 88 Blind Bull Sum 8650 24.8 22.7 109 17.7 21.7 82 Cottonwood Creek 7670 -M 14.1 * -M 28.0 * East Rim Divide 7930 .0 7.4 0 12.6 13.2 95 Grand Targhee 9260 -M 46.0 * -M 35.3 * Granite Creek 6770 1.0 7.4 14 19.2 21.6 89 Grassy Lake 7265 16.7 27.6 61 36.9 39.8 93 Gros Ventre Summit 8750 -M 10.8 * -M 14.9 * Gunsight Pass 9820 -M 11.8 * -M 16.3 * Lewis Lake Divide 7850 17.4 29.5 59 33.5 39.1 86 Phillips Bench 8200 -M 24.2 * -M 31.1 * Salt River Summit 7760 2.9 7.1 41 17.3 18.6 93 Snake River Station 6920 .0 5.1 0 23.4 25.1 93 Spring Creek Divide 9000 -M 24.2 * -M 26.6 * Thumb Divide 7980 .0 10.3 0 16.0 21.3 75 Togwotee Pass 9580 21.2 24.8 85 27.0 27.8 97 Two Ocean Plateau 9240 25.1 29.9 84 26.1 30.6 85 Willow Creek 8380 -M 21.8 * -M 38.3 * Younts Peak 8350 1.3 15.7 8 15.2 18.0 84 ----- ----- Basin Index (%) 61 89 MADISON-GALLATIN Black Bear 8170 28.1 37.2 76 37.1 42.3 88 Canyon 7870 2.9 8.8 33 14.3 18.3 78 Madison Plateau 7750 14.0 20.8 67 24.4 29.4 83 West Yellowstone 6700 .0 .0 * 14.6 16.2 90 Whiskey Creek 6800 6.4 12.9 50 18.0 22.6 80 ----- ----- Basin Index (%) 64 84 YELLOWSTONE Beartooth Lake 9360 17.9 22.7 79 19.6 22.3 88 Burnt Mtn 5880 .0 .0 * 13.8 16.2 85 Canyon 7870 2.9 8.8 33 14.3 18.3 78 Cole Creek 7850 11.4 16.8 68 15.3 16.8 91 Evening Star 9200 23.3 24.9 94 30.9 31.0 100 Fisher Creek 9100 25.6 32.9 78 27.3 35.7 76 Northeast Entrance 7350 .0 1.2 0 12.3 14.0 88 Parker Peak 9400 17.5 21.3 82 22.9 20.4 112 Sylvan Lake 8420 10.3 18.7 55 25.2 25.5 99 Thumb Divide 7980 .0 10.3 0 16.0 21.3 75 Two Ocean Plateau 9240 25.1 29.9 84 26.1 30.6 85 White Mill 8700 19.1 24.0 80 22.7 26.7 85 Wolverine 7650 .0 .8 0* 12.9 14.0 92 ----- ----- Basin Index (%) 72 89 WIND RIVER Burroughs Creek 8750 5.3 -M * 15.1 -M * Castle Creek 8400 .0 -M * 9.0 -M * Cold Springs 9630 6.1 1.5 407 13.1 12.8 102 Deer Park 9700 18.7 15.1 124 23.0 23.8 97 Hobbs Park 10100 20.0 15.9 126 21.8 17.1 127 Kirwin 9550 12.1 10.7 113 16.5 14.2 116 Little Warm 9370 6.5 7.8 83 12.9 15.7 82 Owl Creek 8975 1.6 .6 267 8.9 8.2 109 South Pass 9040 16.1 13.8 117 17.8 20.8 86 St. Lawrence Alt 8620 4.6 1.8 256 13.6 11.8 115 Togwotee Pass 9580 21.2 24.8 85 27.0 27.8 97 Townsend Creek 8700 11.8 6.2 190 18.7 15.2 123 ----- ----- Basin Index (%) 121 104 BIGHORN BASIN Bald Mtn. 9380 15.9 20.4 78 15.0 20.1 75 Bear Trap Meadow 8200 1.7 .3 567* 9.7 11.0 88 Bone Springs Div 9350 13.1 16.4 80 14.2 18.6 76 Grave Springs 8550 8.6 9.1 95 10.3 13.1 79 Kirwin 9550 12.1 10.7 113 16.5 14.2 116 Marquette 8760 7.2 -M * 14.0 -M * Middle Powder 7760 12.1 11.3 107 12.1 14.5 83 Owl Creek 8975 1.6 .6 267 8.9 8.2 109 Powder River Pass 9480 6.7 9.1 74 11.5 15.4 75 Shell Creek 9580 13.4 16.2 83 13.1 16.7 78 Timber Creek 7950 3.8 2.3 165 14.3 10.3 139 ----- ----- Basin Index (%) 92 88 SHOSHONE RIVER Blackwater 9780 21.8 25.8 84 27.1 23.9 113 Evening Star 9200 23.3 24.9 94 30.9 31.0 100 Marquette 8760 7.2 -M * 14.0 -M * Sylvan Road 7120 .0 3.7 0 16.1 18.9 85 Younts Peak 8350 1.3 15.7 8 15.2 18.0 84 ----- ----- Basin Index (%) 66 97 POWDER RIVER Bear Trap Meadow 8200 1.7 .3 567* 9.7 11.0 88 Cloud Peak Reservoir 9860 13.2 16.4 80 17.7 17.1 104 Grave Springs 8550 8.6 9.1 95 10.3 13.1 79 Hansen Sawmill 8360 2.5 1.7 147 10.9 11.1 98 Middle Powder 7760 12.1 11.3 107 12.1 14.5 83 Powder River Pass 9480 6.7 9.1 74 11.5 15.4 75 Soldier Park 8720 .0 -M * 11.0 -M * ----- ----- Basin Index (%) 94 88 TONGUE RIVER Big Goose 7990 9.1 9.6 95 14.0 14.5 97 Bone Springs Div 9350 13.1 16.4 80 14.2 18.6 76 Burgess Junction 7880 10.5 11.7 90 13.5 15.1 89 Dome Lake 8880 10.1 11.3 89 14.9 16.8 89 Little Goose 8870 11.0 -M * 16.4 -M * Sucker Creek 8880 10.3 12.0 86 15.6 17.8 88 Tie Creek 6870 .0 2.4 0 12.3 14.8 83 ----- ----- Basin Index (%) 84 87 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 11.3 12.4 91 ----- ----- Basin Index (%) * 91 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 12.0 14.7 82 North Rapid Creek 6130 .0 .0 * 9.7 12.6 77 ----- ----- Basin Index (%) * 79 UPPER N. PLATTE Arapaho Ridge 10960 27.4 22.2 123 29.2 26.8 109 Blackhall Mtn 9820 35.3 -M * -M -M * Columbine 9160 19.0 16.5 115 29.6 29.1 102 Divide Peak 8880 19.7 17.1 115 30.4 24.8 123 Joe Wright 10120 -M 22.8 * -M 30.6 * Laprele Creek 8375 7.9 5.2 152 15.7 15.4 102 Med Bow 10500 38.3 -M * 38.0 -M * North French Creek 10130 31.7 32.7 97 33.2 31.3 106 Never Summer 10280 22.6 21.9 103 20.8 -M * Old Battle 10000 37.1 35.0 106 36.4 39.8 91 Rawah 9020 10.8 4.4 245 22.3 17.7 126 Sage Creek Basin 7850 9.9 .6 1650* 16.0 16.5 97 Sand Lake 10050 34.0 31.6 108 33.5 29.6 113 South Brush Creek 8440 7.7 7.5 103 19.0 18.3 104 Tower 10500 45.8 51.0 90 45.0 45.5 99 Webber Springs 9250 23.1 20.8 111 31.3 30.4 103 Willow Creek Pass 9540 18.0 14.5 124 18.9 16.1 117 Zirkel 9340 25.2 20.6 122 35.4 31.5 112 ----- ----- Basin Index (%) 113 106 SWEETWATER Deer Park 9700 18.7 15.1 124 23.0 23.8 97 Larsen Creek 9000 3.7 8.0 46 16.1 -M * South Pass 9040 16.1 13.8 117 17.8 20.8 86 ----- ----- Basin Index (%) 104 91 LOWER N. PLATTE Casper Mtn. 7900 19.4 12.2 159 20.4 18.5 110 Laprele Creek 8375 7.9 5.2 152 15.7 15.4 102 Reno Hill 8400 18.0 12.0 150 24.4 19.4 126 Windy Peak 7900 8.9 2.8 318 15.8 13.3 119 ----- ----- Basin Index (%) 168 115 LARAMIE RIVER Brooklyn Lake 10240 25.5 22.8 112 28.8 25.2 114 Cinnabar Park 9574 22.2 18.5 120 28.4 27.6 103 Crow Creek 8330 5.3 .0 * 20.1 13.8 146 Deadman Hill 10220 23.6 19.1 124 24.5 21.1 116 Rawah 9020 10.8 4.4 245 22.3 17.7 126 Roach 9700 21.9 17.0 129 27.4 22.8 120 ----- ----- Basin Index (%) 134 118 S. PLATTE Black Mountain 8920 -M -M * 21.8 -M * Crow Creek 8330 5.3 .0 * 20.1 13.8 146 Deadman Hill 10220 23.6 19.1 124 24.5 21.1 116 ----- ----- Basin Index (%) 151* 128 LITTLE SNAKE RIVER Battle Mountain 7440 1.5 .0 * 19.7 17.4 113 Divide Peak 8880 19.7 17.1 115 30.4 24.8 123 Elk River 8700 12.2 11.3 108 22.2 23.2 96 Little Snake River 8915 23.8 21.4 111 38.2 33.3 115 Old Battle 10000 37.1 35.0 106 36.4 39.8 91 Sage Creek Basin 7850 9.9 .6 1650* 16.0 16.5 97 Sandstone RS 8150 5.7 4.1 139 16.0 21.1 76 Whiskey Park 8950 28.6 27.0 106 34.3 32.1 107 ----- ----- Basin Index (%) 119 102 UPPER GREEN RIVER Big Sandy Opening 9080 10.0 9.0 111 14.6 15.5 94 Blind Bull Sum 8650 24.8 22.7 109 17.7 21.7 82 East Rim Divide 7930 .0 7.4 0 12.6 13.2 95 Elkhart Park G.S. 9400 8.1 10.3 79 13.5 15.3 88 Gros Ventre Summit 8750 -M 10.8 * -M 14.9 * Gunsight Pass 9820 -M 11.8 * -M 16.3 * Kendall R.S. 7740 -M 2.0 * 13.0 15.8 82 Loomis Park 8240 -M 9.5 * -M 19.2 * New Fork Lake 8340 .1 5.0 2 12.3 12.4 99 Pocket Creek 9360 8.5 -M * 12.0 -M * Snider Basin 8060 1.7 8.2 21 15.1 15.8 96 Spring Creek Divide 9000 -M 24.2 * -M 26.6 * Triple Peak 8500 16.0 15.9 101 29.0 28.3 102 ----- ----- Basin Index (%) 77 93 LOWER GREEN RIVER Blacks Fork Jct 8870 -M -M * -M -M * Buck Pasture 9700 10.8 -M * 20.2 -M * EF Blacks Fork GS 9360 6.1 -M * 14.3 -M * Hams Fork 7840 .0 1.1 0 12.2 13.3 92 Hewinta 9519 -M 4.0 * -M 16.6 * Hickerson Park 9145 8.7 2.7 322 16.1 12.4 130 Hole-in-Rock 9150 3.7 1.5 247 15.7 11.9 132 Indian Creek 9425 18.6 21.8 85 20.5 25.4 81 Kelley R.S. 8180 7.3 10.0 73 17.2 20.5 84 Spirit Lk 10235 19.3 -M * 23.0 -M * Steel Creek Park 10200 19.4 17.5 111 22.9 19.6 117 ----- ----- Basin Index (%) 106 101 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 14.2 -M * Bug Lake 7950 10.4 13.4 78 21.2 22.1 96 Burts Miller Ranch 8000 .0 -M * 7.2 -M * Chalk Creek #1 8993 15.8 23.2 68 25.2 29.0 87 Hayden Fork 9212 4.8 8.1 59 22.8 24.3 94 Kelley R.S. 8180 7.3 10.0 73 17.2 20.5 84 Lily Lake 9156 8.7 9.2 95 16.5 20.0 82 Monte Cristo 8960 23.4 24.6 95 31.3 29.9 105 Salt River Summit 7760 2.9 7.1 41 17.3 18.6 93 ----- ----- Basin Index (%) 77 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.