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 TUESDAY: APRIL 26 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 7.6 10.6 72 21.1 22.2 95 Black Bear 8170 30.3 37.0 82 36.8 40.9 90 Blind Bull Sum 8650 25.8 24.2 107 17.5 20.8 84 Cottonwood Creek 7670 17.9 17.0 105 28.9 26.6 109 East Rim Divide 7930 .0 8.9 0 12.0 12.5 96 Grand Targhee 9260 41.8 43.3 97 34.2 33.6 102 Granite Creek 6770 6.5 9.3 70 18.7 20.7 90 Grassy Lake 7265 21.6 30.1 72 36.7 38.4 96 Gros Ventre Summit 8750 9.9 12.3 80 11.9 14.1 84 Gunsight Pass 9820 13.6 13.4 101 15.9 15.5 103 Lewis Lake Divide 7850 21.8 30.7 71 33.1 37.7 88 Phillips Bench 8200 19.5 25.5 76 27.6 29.9 92 Salt River Summit 7760 7.2 8.4 86 17.2 17.9 96 Snake River Station 6920 5.9 9.8 60 23.3 24.2 96 Spring Creek Divide 9000 25.4 23.9 106 25.2 25.5 99 Thumb Divide 7980 5.1 14.1 36 15.8 20.3 78 Togwotee Pass 9580 21.6 24.5 88 26.5 26.5 100 Two Ocean Plateau 9240 26.0 29.2 89 26.1 29.3 89 Willow Creek 8380 22.8 25.3 90 36.2 36.5 99 Younts Peak 8350 6.2 15.1 41 14.4 17.1 84 ----- ----- Basin Index (%) 82 94 MADISON-GALLATIN Black Bear 8170 30.3 37.0 82 36.8 40.9 90 Canyon 7870 6.4 11.6 55 14.0 17.5 80 Madison Plateau 7750 18.0 22.4 80 24.2 28.2 86 West Yellowstone 6700 .0 4.7 0 14.5 15.5 94 Whiskey Creek 6800 9.5 15.4 62 17.8 21.8 82 ----- ----- Basin Index (%) 70 87 YELLOWSTONE Beartooth Lake 9360 18.6 23.5 79 19.3 21.3 91 Burnt Mtn 5880 -M .0 * 12.8 14.9 86 Canyon 7870 6.4 11.6 55 14.0 17.5 80 Cole Creek 7850 10.9 16.3 67 13.7 15.5 88 Evening Star 9200 24.6 24.6 100 30.3 29.6 102 Fisher Creek 9100 27.5 33.2 83 27.1 34.3 79 Northeast Entrance 7350 -M 4.9 * 12.2 13.4 91 Parker Peak 9400 19.8 21.8 91 22.5 19.4 116 Sylvan Lake 8420 13.5 20.3 67 25.2 24.3 104 Thumb Divide 7980 5.1 14.1 36 15.8 20.3 78 Two Ocean Plateau 9240 26.0 29.2 89 26.1 29.3 89 White Mill 8700 21.0 23.8 88 22.6 25.6 88 Wolverine 7650 .0 5.2 0 13.0 13.3 98 ----- ----- Basin Index (%) 78 91 WIND RIVER Burroughs Creek 8750 5.5 -M * 13.3 -M * Castle Creek 8400 .0 -M * 8.2 -M * Cold Springs 9630 6.3 2.7 233 11.4 11.8 97 Deer Park 9700 17.1 16.3 105 20.4 22.8 89 Hobbs Park 10100 18.3 15.7 117 19.0 15.9 119 Kirwin 9550 12.2 10.2 120 15.6 13.2 118 Little Warm 9370 7.6 9.4 81 12.3 14.6 84 Owl Creek 8975 1.9 2.3 83 7.8 7.4 105 South Pass 9040 14.4 15.2 95 14.7 19.6 75 St. Lawrence Alt 8620 4.0 4.6 87 11.9 10.9 109 Togwotee Pass 9580 21.6 24.5 88 26.5 26.5 100 Townsend Creek 8700 10.2 8.7 117 15.3 14.3 107 ----- ----- Basin Index (%) 104 99 BIGHORN BASIN Bald Mtn. 9380 16.5 20.5 80 14.5 18.9 77 Bear Trap Meadow 8200 3.0 1.7 176 8.7 10.0 87 Bone Springs Div 9350 13.8 16.4 84 13.7 17.4 79 Grave Springs 8550 7.8 9.2 85 8.6 12.3 70 Kirwin 9550 12.2 10.2 120 15.6 13.2 118 Marquette 8760 8.3 -M * 13.8 -M * Middle Powder 7760 11.0 12.2 90 10.1 13.5 75 Owl Creek 8975 1.9 2.3 83 7.8 7.4 105 Powder River Pass 9480 7.5 10.1 74 10.5 14.3 73 Shell Creek 9580 13.6 15.9 86 12.2 15.5 79 Timber Creek 7950 5.2 3.6 144 13.5 9.2 147 ----- ----- Basin Index (%) 91 87 SHOSHONE RIVER Blackwater 9780 23.6 24.6 96 26.5 22.7 117 Evening Star 9200 24.6 24.6 100 30.3 29.6 102 Marquette 8760 8.3 -M * 13.8 -M * Sylvan Road 7120 .0 7.9 0 16.2 18.0 90 Younts Peak 8350 6.2 15.1 41 14.4 17.1 84 ----- ----- Basin Index (%) 75 100 POWDER RIVER Bear Trap Meadow 8200 3.0 1.7 176 8.7 10.0 87 Cloud Peak Reservoir 9860 13.1 16.4 80 16.6 15.8 105 Grave Springs 8550 7.8 9.2 85 8.6 12.3 70 Hansen Sawmill 8360 3.7 4.1 90 9.9 10.3 96 Middle Powder 7760 11.0 12.2 90 10.1 13.5 75 Powder River Pass 9480 7.5 10.1 74 10.5 14.3 73 Soldier Park 8720 1.0 -M * 10.2 -M * ----- ----- Basin Index (%) 86 85 TONGUE RIVER Big Goose 7990 9.6 9.1 105 12.8 13.5 95 Bone Springs Div 9350 13.8 16.4 84 13.7 17.4 79 Burgess Junction 7880 10.8 12.4 87 12.6 14.1 89 Dome Lake 8880 10.3 11.8 87 13.9 15.6 89 Little Goose 8870 11.0 -M * 15.4 -M * Sucker Creek 8880 10.7 12.6 85 14.5 16.6 87 Tie Creek 6870 .0 3.2 0 11.6 13.6 85 ----- ----- Basin Index (%) 84 87 BELLE FOURCHE Cole Canyon 5910 .0 .6 0 10.2 11.0 93 ----- ----- Basin Index (%) 0 93 CHEYENNE RIVER BASIN Blind Park 6890 .0 3.2 0 11.3 13.7 82 North Rapid Creek 6130 .0 3.1 0 9.0 11.7 77 ----- ----- Basin Index (%) 0 80 UPPER N. PLATTE Arapaho Ridge 10960 26.1 21.9 119 27.8 25.6 109 Blackhall Mtn 9820 34.0 -M * 33.9 -M * Columbine 9160 20.2 20.3 100 28.5 27.8 103 Divide Peak 8880 19.7 18.0 109 28.9 23.7 122 Joe Wright 10120 -M 23.4 * -M 29.0 * Laprele Creek 8375 7.9 7.2 110 13.5 14.5 93 Med Bow 10500 36.8 -M * 36.2 -M * North French Creek 10130 30.7 32.8 94 31.3 29.8 105 Never Summer 10280 22.3 21.3 105 19.8 -M * Old Battle 10000 35.4 34.3 103 33.5 38.2 88 Rawah 9020 11.6 8.0 145 21.3 16.7 128 Sage Creek Basin 7850 10.9 2.2 495 15.5 15.7 99 Sand Lake 10050 31.9 31.1 103 31.0 28.1 110 South Brush Creek 8440 8.2 10.0 82 17.4 17.2 101 Tower 10500 43.3 49.5 87 41.8 43.6 96 Webber Springs 9250 22.1 21.9 101 29.5 29.2 101 Willow Creek Pass 9540 17.5 13.8 127 18.1 15.2 119 Zirkel 9340 24.7 22.1 112 33.6 30.4 111 ----- ----- Basin Index (%) 106 104 SWEETWATER Deer Park 9700 17.1 16.3 105 20.4 22.8 89 Larsen Creek 9000 6.0 9.7 62 15.4 -M * South Pass 9040 14.4 15.2 95 14.7 19.6 75 ----- ----- Basin Index (%) 91 83 LOWER N. PLATTE Casper Mtn. 7900 18.4 14.2 130 18.8 17.3 109 Laprele Creek 8375 7.9 7.2 110 13.5 14.5 93 Reno Hill 8400 16.9 13.7 123 21.8 18.1 120 Windy Peak 7900 7.4 5.8 128 12.8 12.5 102 ----- ----- Basin Index (%) 124 107 LARAMIE RIVER Brooklyn Lake 10240 24.6 22.9 107 26.3 23.9 110 Cinnabar Park 9574 20.8 20.0 104 26.3 26.3 100 Crow Creek 8330 6.5 .0 * 18.0 12.9 140 Deadman Hill 10220 22.8 18.3 125 23.1 20.0 116 Rawah 9020 11.6 8.0 145 21.3 16.7 128 Roach 9700 20.8 16.9 123 25.3 21.6 117 ----- ----- Basin Index (%) 124 116 S. PLATTE Black Mountain 8920 13.5 -M * 20.3 -M * Crow Creek 8330 6.5 .0 * 18.0 12.9 140 Deadman Hill 10220 22.8 18.3 125 23.1 20.0 116 ----- ----- Basin Index (%) 160* 125 LITTLE SNAKE RIVER Battle Mountain 7440 4.3 1.6 269 18.3 16.7 110 Divide Peak 8880 19.7 18.0 109 28.9 23.7 122 Elk River 8700 12.0 14.4 83 20.6 22.1 93 Little Snake River 8915 23.7 23.2 102 36.6 31.8 115 Old Battle 10000 35.4 34.3 103 33.5 38.2 88 Sage Creek Basin 7850 10.9 2.2 495 15.5 15.7 99 Sandstone RS 8150 6.9 8.2 84 14.6 20.2 72 Whiskey Park 8950 27.8 25.6 109 32.4 30.6 106 ----- ----- Basin Index (%) 110 101 UPPER GREEN RIVER Big Sandy Opening 9080 11.1 12.0 92 13.9 14.7 95 Blind Bull Sum 8650 25.8 24.2 107 17.5 20.8 84 East Rim Divide 7930 .0 8.9 0 12.0 12.5 96 Elkhart Park G.S. 9400 8.5 11.8 72 12.8 14.5 88 Gros Ventre Summit 8750 9.9 12.3 80 11.9 14.1 84 Gunsight Pass 9820 13.6 13.4 101 15.9 15.5 103 Kendall R.S. 7740 -M 6.3 * 12.4 15.0 83 Loomis Park 8240 8.3 11.6 72 17.5 18.4 95 New Fork Lake 8340 2.8 7.2 39 11.6 11.6 100 Pocket Creek 9360 8.3 -M * 11.0 -M * Snider Basin 8060 6.6 10.0 66 15.0 15.2 99 Spring Creek Divide 9000 25.4 23.9 106 25.2 25.5 99 Triple Peak 8500 19.4 18.9 103 28.6 27.1 106 ----- ----- Basin Index (%) 85 95 LOWER GREEN RIVER Blacks Fork Jct 8870 8.2 -M * 14.0 -M * Buck Pasture 9700 11.0 -M * 19.3 -M * EF Blacks Fork GS 9360 7.1 -M * 13.2 -M * Hams Fork 7840 4.4 4.6 96 11.8 12.6 94 Hewinta 9519 7.8 6.5 120 15.8 15.6 101 Hickerson Park 9145 8.4 5.1 165 14.2 11.6 122 Hole-in-Rock 9150 3.6 4.6 78 14.0 11.1 126 Indian Creek 9425 20.5 23.8 86 20.1 24.3 83 Kelley R.S. 8180 10.0 11.8 85 16.9 19.6 86 Spirit Lk 10235 16.7 -M * 20.3 -M * Steel Creek Park 10200 18.9 16.6 114 21.7 18.5 117 ----- ----- Basin Index (%) 101 101 UPPER BEAR RIVER Bear River RS 8777 .3 -M * 13.3 -M * Bug Lake 7950 13.3 16.2 82 20.8 21.1 99 Burts Miller Ranch 8000 .0 -M * 6.7 -M * Chalk Creek #1 8993 16.8 24.7 68 24.2 27.7 87 Hayden Fork 9212 6.4 10.4 62 21.4 23.1 93 Kelley R.S. 8180 10.0 11.8 85 16.9 19.6 86 Lily Lake 9156 9.1 9.8 93 15.6 19.0 82 Monte Cristo 8960 24.1 27.3 88 30.3 28.4 107 Salt River Summit 7760 7.2 8.4 86 17.2 17.9 96 ----- ----- Basin Index (%) 80 93 ----------------------------------------------------------------------------- -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.