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 WEDNESDAY: APRIL 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 16.2 15.2 107 20.1 20.5 98 Black Bear 8170 29.9 37.2 80 34.4 37.6 91 Blind Bull Sum 8650 25.4 23.1 110 16.5 19.2 86 Cottonwood Creek 7670 20.8 21.0 99 25.6 24.3 105 East Rim Divide 7930 10.3 10.2 101 10.8 11.6 93 Grand Targhee 9260 39.7 38.2 104 30.1 30.4 99 Granite Creek 6770 13.2 14.6 90 17.0 19.4 88 Grassy Lake 7265 30.1 31.5 96 35.2 35.4 99 Gros Ventre Summit 8750 11.2 12.9 87 10.7 12.7 84 Gunsight Pass 9820 13.8 13.7 101 14.4 13.6 106 Lewis Lake Divide 7850 29.3 29.8 98 32.0 34.8 92 Phillips Bench 8200 22.3 25.2 88 25.8 27.7 93 Salt River Summit 7760 12.9 12.9 100 15.3 16.4 93 Snake River Station 6920 17.3 14.9 116 23.0 22.1 104 Spring Creek Divide 9000 25.4 22.5 113 23.3 23.5 99 Thumb Divide 7980 13.6 14.7 93 15.3 18.3 84 Togwotee Pass 9580 21.3 22.0 97 24.3 23.8 102 Two Ocean Plateau 9240 26.6 25.9 103 25.0 26.6 94 Willow Creek 8380 27.7 28.4 98 32.0 33.0 97 Younts Peak 8350 13.6 14.3 95 13.4 15.5 86 ----- ----- Basin Index (%) 98 95 MADISON-GALLATIN Black Bear 8170 29.9 37.2 80 34.4 37.6 91 Canyon 7870 10.6 12.5 85 13.2 16.0 82 Madison Plateau 7750 22.0 21.4 103 22.6 25.9 87 West Yellowstone 6700 9.7 9.7 100 13.3 14.0 95 Whiskey Creek 6800 13.3 14.9 89 16.6 19.8 84 ----- ----- Basin Index (%) 89 88 YELLOWSTONE Beartooth Lake 9360 17.1 21.2 81 17.7 19.4 91 Burnt Mtn 5880 1.4 4.6 30 10.9 12.8 85 Canyon 7870 10.6 12.5 85 13.2 16.0 82 Cole Creek 7850 10.9 14.4 76 11.9 12.7 94 Evening Star 9200 25.1 23.7 106 28.0 26.8 104 Fisher Creek 9100 28.8 31.1 93 26.0 31.1 84 Northeast Entrance 7350 7.4 9.1 81 11.6 12.0 97 Parker Peak 9400 20.7 19.3 107 20.8 17.3 120 Sylvan Lake 8420 17.7 19.3 92 23.2 21.8 106 Thumb Divide 7980 13.6 14.7 93 15.3 18.3 84 Two Ocean Plateau 9240 26.6 25.9 103 25.0 26.6 94 White Mill 8700 23.4 22.1 106 21.8 23.2 94 Wolverine 7650 10.8 9.5 114 12.1 12.0 101 ----- ----- Basin Index (%) 94 95 WIND RIVER Burroughs Creek 8750 10.3 -M * 13.0 -M * Castle Creek 8400 4.0 -M * 6.4 -M * Cold Springs 9630 8.8 6.8 129 10.0 9.8 102 Deer Park 9700 16.2 15.4 105 17.3 19.6 88 Hobbs Park 10100 16.1 14.0 115 15.5 13.2 117 Kirwin 9550 10.6 9.6 110 12.6 11.4 111 Little Warm 9370 9.3 10.2 91 11.4 12.6 90 Owl Creek 8975 4.8 5.8 83 5.4 5.9 92 South Pass 9040 14.3 15.1 95 13.0 17.2 76 St. Lawrence Alt 8620 6.9 6.8 101 9.4 8.9 106 Togwotee Pass 9580 21.3 22.0 97 24.3 23.8 102 Townsend Creek 8700 10.9 9.5 115 12.6 11.9 106 ----- ----- Basin Index (%) 103 98 BIGHORN BASIN Bald Mtn. 9380 15.3 19.0 81 11.9 16.7 71 Bear Trap Meadow 8200 6.8 5.0 136 6.5 8.4 77 Bone Springs Div 9350 12.5 16.7 75 10.6 15.3 69 Grave Springs 8550 7.8 9.3 84 6.5 10.4 62 Kirwin 9550 10.6 9.6 110 12.6 11.4 111 Marquette 8760 7.4 -M * 11.0 -M * Middle Powder 7760 11.0 11.9 92 7.8 11.5 68 Owl Creek 8975 4.8 5.8 83 5.4 5.9 92 Powder River Pass 9480 7.9 10.1 78 8.3 12.4 67 Shell Creek 9580 11.4 15.0 76 10.0 13.6 74 Timber Creek 7950 6.0 4.9 122 10.5 7.2 146 ----- ----- Basin Index (%) 88 80 SHOSHONE RIVER Blackwater 9780 22.1 22.4 99 24.6 20.2 122 Evening Star 9200 25.1 23.7 106 28.0 26.8 104 Marquette 8760 7.4 -M * 11.0 -M * Sylvan Road 7120 6.5 10.8 60 15.3 16.5 93 Younts Peak 8350 13.6 14.3 95 13.4 15.5 86 ----- ----- Basin Index (%) 95 103 POWDER RIVER Bear Trap Meadow 8200 6.8 5.0 136 6.5 8.4 77 Cloud Peak Reservoir 9860 11.4 14.7 78 12.4 13.1 95 Grave Springs 8550 7.8 9.3 84 6.5 10.4 62 Hansen Sawmill 8360 6.4 6.2 103 7.4 8.4 88 Middle Powder 7760 11.0 11.9 92 7.8 11.5 68 Powder River Pass 9480 7.9 10.1 78 8.3 12.4 67 Soldier Park 8720 4.3 -M * 7.4 -M * ----- ----- Basin Index (%) 90 76 TONGUE RIVER Big Goose 7990 7.5 9.5 79 8.3 11.2 74 Bone Springs Div 9350 12.5 16.7 75 10.6 15.3 69 Burgess Junction 7880 8.8 11.8 75 9.2 12.2 75 Dome Lake 8880 9.0 11.7 77 9.1 13.4 68 Little Goose 8870 8.6 -M * 10.2 -M * Sucker Creek 8880 9.4 12.0 78 10.1 14.2 71 Tie Creek 6870 2.5 5.5 45 8.5 11.6 73 ----- ----- Basin Index (%) 74 72 BELLE FOURCHE Cole Canyon 5910 3.3 5.3 62 9.3 9.3 100 ----- ----- Basin Index (%) 62 100 CHEYENNE RIVER BASIN Blind Park 6890 2.8 7.1 39 10.4 11.8 88 North Rapid Creek 6130 3.4 6.6 52 8.2 9.8 84 ----- ----- Basin Index (%) 45 86 UPPER N. PLATTE Arapaho Ridge 10960 24.8 20.7 120 24.3 22.2 109 Blackhall Mtn 9820 30.3 -M * 29.3 -M * Columbine 9160 24.7 23.4 106 26.0 25.2 103 Divide Peak 8880 19.2 19.8 97 22.2 21.2 105 Joe Wright 10120 18.3 21.0 87 25.9 25.5 102 Laprele Creek 8375 9.8 9.4 104 11.5 12.3 93 Med Bow 10500 34.4 -M * 30.3 -M * North French Creek 10130 26.1 29.2 89 24.9 26.4 94 Never Summer 10280 20.6 20.3 101 17.7 -M * Old Battle 10000 29.0 31.1 93 27.4 34.6 79 Rawah 9020 14.0 10.6 132 18.6 14.0 133 Sage Creek Basin 7850 15.4 12.2 126 12.5 14.3 87 Sand Lake 10050 26.9 28.6 94 25.5 24.5 104 South Brush Creek 8440 12.0 12.0 100 13.9 15.0 93 Tower 10500 39.2 45.6 86 37.1 39.4 94 Webber Springs 9250 21.9 23.1 95 24.4 26.4 92 Willow Creek Pass 9540 16.2 12.1 134 16.1 13.3 121 Zirkel 9340 28.5 26.3 108 30.5 28.1 109 ----- ----- Basin Index (%) 100 100 SWEETWATER Deer Park 9700 16.2 15.4 105 17.3 19.6 88 Larsen Creek 9000 9.1 11.7 78 12.9 -M * South Pass 9040 14.3 15.1 95 13.0 17.2 76 ----- ----- Basin Index (%) 94 82 LOWER N. PLATTE Casper Mtn. 7900 17.2 14.3 120 15.1 14.7 103 Laprele Creek 8375 9.8 9.4 104 11.5 12.3 93 Reno Hill 8400 16.1 14.0 115 18.5 15.2 122 Windy Peak 7900 9.5 7.8 122 10.9 10.4 105 ----- ----- Basin Index (%) 116 106 LARAMIE RIVER Brooklyn Lake 10240 24.1 21.5 112 23.0 20.9 110 Cinnabar Park 9574 19.4 21.0 92 22.3 24.0 93 Crow Creek 8330 9.5 7.0 136 14.4 10.7 135 Deadman Hill 10220 21.3 16.0 133 20.1 17.1 118 Rawah 9020 14.0 10.6 132 18.6 14.0 133 Roach 9700 17.9 16.4 109 19.9 19.0 105 ----- ----- Basin Index (%) 115 112 S. PLATTE Black Mountain 8920 13.9 -M * 17.1 -M * Crow Creek 8330 9.5 7.0 136 14.4 10.7 135 Deadman Hill 10220 21.3 16.0 133 20.1 17.1 118 ----- ----- Basin Index (%) 134 124 LITTLE SNAKE RIVER Battle Mountain 7440 11.2 9.8 114 15.2 14.8 103 Divide Peak 8880 19.2 19.8 97 22.2 21.2 105 Elk River 8700 17.6 19.2 92 18.4 19.8 93 Little Snake River 8915 23.6 24.9 95 30.4 29.2 104 Old Battle 10000 29.0 31.1 93 27.4 34.6 79 Sage Creek Basin 7850 15.4 12.2 126 12.5 14.3 87 Sandstone RS 8150 10.8 12.8 84 11.6 18.1 64 Whiskey Park 8950 27.0 27.2 99 27.0 27.6 98 ----- ----- Basin Index (%) 98 92 UPPER GREEN RIVER Big Sandy Opening 9080 11.1 12.5 89 11.5 13.0 88 Blind Bull Sum 8650 25.4 23.1 110 16.5 19.2 86 East Rim Divide 7930 10.3 10.2 101 10.8 11.6 93 Elkhart Park G.S. 9400 9.1 12.2 75 11.1 13.1 85 Gros Ventre Summit 8750 11.2 12.9 87 10.7 12.7 84 Gunsight Pass 9820 13.8 13.7 101 14.4 13.6 106 Kendall R.S. 7740 8.7 11.5 76 11.6 14.0 83 Loomis Park 8240 14.0 13.8 101 16.3 17.0 96 New Fork Lake 8340 8.8 10.3 85 11.1 10.6 105 Pocket Creek 9360 8.1 -M * 9.4 -M * Snider Basin 8060 14.0 12.3 114 14.0 14.0 100 Spring Creek Divide 9000 25.4 22.5 113 23.3 23.5 99 Triple Peak 8500 26.1 21.9 119 27.0 25.0 108 ----- ----- Basin Index (%) 101 95 LOWER GREEN RIVER Blacks Fork Jct 8870 12.2 -M * 12.4 -M * Buck Pasture 9700 14.3 -M * 17.3 -M * EF Blacks Fork GS 9360 10.3 -M * 10.7 -M * Hams Fork 7840 -M 10.7 * -M 11.2 * Hewinta 9519 12.5 10.9 115 13.6 13.9 98 Hickerson Park 9145 11.8 7.9 149 11.7 10.2 115 Hole-in-Rock 9150 8.6 7.0 123 11.5 9.7 119 Indian Creek 9425 23.0 24.6 93 18.5 22.3 83 Kelley R.S. 8180 13.8 14.8 93 15.4 17.8 87 Spirit Lk 10235 15.1 -M * 16.9 -M * Steel Creek Park 10200 16.9 15.7 108 18.7 16.3 115 ----- ----- Basin Index (%) 107 99 UPPER BEAR RIVER Bear River RS 8777 7.9 -M * 12.0 -M * Bug Lake 7950 18.1 18.3 99 19.1 19.2 99 Burts Miller Ranch 8000 4.0 -M * 5.9 -M * Chalk Creek #1 8993 20.5 24.3 84 22.4 24.9 90 Hayden Fork 9212 14.4 15.4 94 19.3 20.9 92 Kelley R.S. 8180 13.8 14.8 93 15.4 17.8 87 Lily Lake 9156 13.4 12.6 106 12.1 17.0 71 Monte Cristo 8960 27.5 27.6 100 27.6 25.6 108 Salt River Summit 7760 12.9 12.9 100 15.3 16.4 93 ----- ----- Basin Index (%) 96 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.