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: MARCH 24 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.2 14.6 104 18.8 19.3 97 Black Bear 8170 30.2 33.4 90 31.9 35.1 91 Blind Bull Sum 8650 23.6 21.0 112 15.0 17.9 84 Cottonwood Creek 7670 20.5 20.4 100 24.1 22.5 107 East Rim Divide 7930 10.5 9.7 108 10.3 10.8 95 Grand Targhee 9260 37.1 33.6 110 28.3 27.6 103 Granite Creek 6770 14.1 14.8 95 16.4 18.4 89 Grassy Lake 7265 28.8 30.0 96 33.2 33.2 100 Gros Ventre Summit 8750 10.3 11.9 87 9.8 11.7 84 Gunsight Pass 9820 12.7 12.4 102 13.3 12.4 107 Lewis Lake Divide 7850 28.7 28.4 101 30.8 32.7 94 Phillips Bench 8200 21.1 22.9 92 24.4 25.8 95 Salt River Summit 7760 12.5 12.2 102 14.2 15.3 93 Snake River Station 6920 16.0 15.5 103 22.0 20.8 106 Spring Creek Divide 9000 23.4 21.8 107 21.7 21.9 99 Thumb Divide 7980 13.3 14.6 91 14.2 16.8 85 Togwotee Pass 9580 19.6 21.0 93 22.5 22.2 101 Two Ocean Plateau 9240 24.4 24.5 100 23.0 24.9 92 Willow Creek 8380 26.4 25.3 104 30.1 30.6 98 Younts Peak 8350 13.0 13.7 95 12.0 14.4 83 ----- ----- Basin Index (%) 100 96 MADISON-GALLATIN Black Bear 8170 30.2 33.4 90 31.9 35.1 91 Canyon 7870 10.0 11.9 84 12.5 14.8 84 Madison Plateau 7750 20.2 20.4 99 21.0 24.1 87 West Yellowstone 6700 10.2 10.0 102 12.4 12.9 96 Whiskey Creek 6800 12.8 14.4 89 15.3 18.4 83 ----- ----- Basin Index (%) 93 88 YELLOWSTONE Beartooth Lake 9360 15.9 20.0 80 16.5 18.1 91 Burnt Mtn 5880 .5 4.8 10 8.3 11.2 74 Canyon 7870 10.0 11.9 84 12.5 14.8 84 Cole Creek 7850 6.3 12.4 51 8.2 11.1 74 Evening Star 9200 23.6 22.9 103 26.2 24.9 105 Fisher Creek 9100 26.8 28.4 94 24.1 29.2 83 Northeast Entrance 7350 7.0 9.4 74 10.9 11.2 97 Parker Peak 9400 18.3 17.9 102 19.0 16.0 119 Sylvan Lake 8420 16.1 18.5 87 21.2 20.3 104 Thumb Divide 7980 13.3 14.6 91 14.2 16.8 85 Two Ocean Plateau 9240 24.4 24.5 100 23.0 24.9 92 White Mill 8700 21.5 20.6 104 20.3 21.7 94 Wolverine 7650 8.4 8.9 94 11.3 11.2 101 ----- ----- Basin Index (%) 89 93 WIND RIVER Burroughs Creek 8750 9.9 -M * 11.9 -M * Castle Creek 8400 4.1 -M * 5.8 -M * Cold Springs 9630 6.4 6.6 97 7.2 8.8 82 Deer Park 9700 12.9 14.0 92 13.4 17.6 76 Hobbs Park 10100 11.4 12.4 92 10.4 11.4 91 Kirwin 9550 8.2 8.6 95 9.8 10.2 96 Little Warm 9370 7.9 9.6 82 9.8 11.5 85 Owl Creek 8975 3.6 4.7 77 4.2 5.2 81 South Pass 9040 11.3 14.4 78 9.2 15.7 59 St. Lawrence Alt 8620 3.8 6.4 59 5.9 7.8 76 Togwotee Pass 9580 19.6 21.0 93 22.5 22.2 101 Townsend Creek 8700 7.4 8.5 87 8.2 10.3 80 ----- ----- Basin Index (%) 87 83 BIGHORN BASIN Bald Mtn. 9380 12.0 16.7 72 10.0 15.2 66 Bear Trap Meadow 8200 5.7 5.2 110 5.2 7.4 70 Bone Springs Div 9350 10.6 14.3 74 8.9 13.7 65 Grave Springs 8550 5.3 8.3 64 4.2 9.3 45 Kirwin 9550 8.2 8.6 95 9.8 10.2 96 Marquette 8760 3.9 -M * 7.6 -M * Middle Powder 7760 7.2 10.3 70 -M 10.4 * Owl Creek 8975 3.6 4.7 77 4.2 5.2 81 Powder River Pass 9480 7.1 9.4 76 7.0 11.2 62 Shell Creek 9580 9.7 13.2 73 8.3 12.2 68 Timber Creek 7950 3.5 4.1 85 7.7 6.4 120 ----- ----- Basin Index (%) 77 72 SHOSHONE RIVER Blackwater 9780 19.6 21.1 93 22.0 18.5 119 Evening Star 9200 23.6 22.9 103 26.2 24.9 105 Marquette 8760 3.9 -M * 7.6 -M * Sylvan Road 7120 7.9 10.7 74 14.3 15.4 93 Younts Peak 8350 13.0 13.7 95 12.0 14.4 83 ----- ----- Basin Index (%) 94 102 POWDER RIVER Bear Trap Meadow 8200 5.7 5.2 110 5.2 7.4 70 Cloud Peak Reservoir 9860 8.8 13.3 66 9.3 11.6 80 Grave Springs 8550 5.3 8.3 64 4.2 9.3 45 Hansen Sawmill 8360 4.9 5.9 83 5.5 7.5 73 Middle Powder 7760 7.2 10.3 70 -M 10.4 * Powder River Pass 9480 7.1 9.4 76 7.0 11.2 62 Soldier Park 8720 3.1 -M * 5.4 -M * ----- ----- Basin Index (%) 74 66 TONGUE RIVER Big Goose 7990 5.1 8.1 63 5.8 9.6 60 Bone Springs Div 9350 10.6 14.3 74 8.9 13.7 65 Burgess Junction 7880 6.0 9.9 61 6.8 10.8 63 Dome Lake 8880 6.7 10.6 63 6.6 11.8 56 Little Goose 8870 6.0 -M * 7.3 -M * Sucker Creek 8880 7.2 11.1 65 7.5 12.6 60 Tie Creek 6870 .4 5.2 8 5.6 10.0 56 ----- ----- Basin Index (%) 61 60 BELLE FOURCHE Cole Canyon 5910 3.0 5.6 54 7.9 8.1 98 ----- ----- Basin Index (%) 54 98 CHEYENNE RIVER BASIN Blind Park 6890 3.8 7.1 54 8.8 10.6 83 North Rapid Creek 6130 4.6 6.7 69 7.0 8.8 80 ----- ----- Basin Index (%) 61 81 UPPER N. PLATTE Arapaho Ridge 10960 22.7 18.4 123 22.7 20.1 113 Blackhall Mtn 9820 27.9 -M * 26.9 -M * Columbine 9160 23.2 22.1 105 24.1 23.4 103 Divide Peak 8880 18.2 18.2 100 20.4 19.6 104 Joe Wright 10120 15.4 19.4 79 22.9 23.4 98 Laprele Creek 8375 8.1 9.3 87 8.9 11.1 80 Med Bow 10500 31.3 -M * 27.6 -M * North French Creek 10130 23.6 26.3 90 22.6 24.3 93 Never Summer 10280 18.4 18.3 101 15.9 -M * Old Battle 10000 26.3 27.3 96 24.7 32.1 77 Rawah 9020 13.0 9.8 133 16.7 12.5 134 Sage Creek Basin 7850 14.6 11.8 124 11.4 13.2 86 Sand Lake 10050 23.6 25.5 93 22.5 22.2 101 South Brush Creek 8440 11.4 11.5 99 11.8 13.7 86 Tower 10500 34.9 41.0 85 33.7 36.4 93 Webber Springs 9250 20.4 21.6 94 22.6 24.4 93 Willow Creek Pass 9540 14.9 11.2 133 14.9 12.0 124 Zirkel 9340 26.5 25.5 104 28.3 25.8 110 ----- ----- Basin Index (%) 99 98 SWEETWATER Deer Park 9700 12.9 14.0 92 13.4 17.6 76 Larsen Creek 9000 7.9 11.5 69 10.8 -M * South Pass 9040 11.3 14.4 78 9.2 15.7 59 ----- ----- Basin Index (%) 80 68 LOWER N. PLATTE Casper Mtn. 7900 11.9 12.6 94 11.5 13.2 87 Laprele Creek 8375 8.1 9.3 87 8.9 11.1 80 Reno Hill 8400 12.2 12.4 98 14.4 13.4 107 Windy Peak 7900 7.6 7.5 101 8.8 9.4 94 ----- ----- Basin Index (%) 95 93 LARAMIE RIVER Brooklyn Lake 10240 21.9 18.2 120 20.6 19.0 108 Cinnabar Park 9574 18.3 18.9 97 20.4 21.8 94 Crow Creek 8330 9.0 6.9 130 12.9 9.4 137 Deadman Hill 10220 18.5 14.3 129 17.6 15.4 114 Rawah 9020 13.0 9.8 133 16.7 12.5 134 Roach 9700 16.3 14.3 114 17.9 17.2 104 ----- ----- Basin Index (%) 118 111 S. PLATTE Black Mountain 8920 12.6 -M * 15.2 -M * Crow Creek 8330 9.0 6.9 130 12.9 9.4 137 Deadman Hill 10220 18.5 14.3 129 17.6 15.4 114 ----- ----- Basin Index (%) 130 123 LITTLE SNAKE RIVER Battle Mountain 7440 12.4 11.2 111 14.1 13.9 101 Divide Peak 8880 18.2 18.2 100 20.4 19.6 104 Elk River 8700 17.2 17.5 98 17.2 18.3 94 Little Snake River 8915 22.2 21.5 103 28.6 27.0 106 Old Battle 10000 26.3 27.3 96 24.7 32.1 77 Sage Creek Basin 7850 14.6 11.8 124 11.4 13.2 86 Sandstone RS 8150 10.4 12.8 81 10.6 17.0 62 Whiskey Park 8950 25.2 24.6 102 25.1 25.5 98 ----- ----- Basin Index (%) 101 91 UPPER GREEN RIVER Big Sandy Opening 9080 9.8 11.9 82 10.2 12.0 85 Blind Bull Sum 8650 23.6 21.0 112 15.0 17.9 84 East Rim Divide 7930 10.5 9.7 108 10.3 10.8 95 Elkhart Park G.S. 9400 8.3 11.1 75 10.2 12.1 84 Gros Ventre Summit 8750 10.3 11.9 87 9.8 11.7 84 Gunsight Pass 9820 12.7 12.4 102 13.3 12.4 107 Kendall R.S. 7740 9.7 11.4 85 11.3 13.2 86 Loomis Park 8240 13.6 13.8 99 15.5 15.9 97 New Fork Lake 8340 8.8 9.6 92 10.5 9.9 106 Pocket Creek 9360 6.9 -M * 8.3 -M * Snider Basin 8060 11.4 11.3 101 11.8 13.0 91 Spring Creek Divide 9000 23.4 21.8 107 21.7 21.9 99 Triple Peak 8500 23.6 20.1 117 24.4 23.2 105 ----- ----- Basin Index (%) 100 94 LOWER GREEN RIVER Blacks Fork Jct 8870 10.7 -M * 11.0 -M * Buck Pasture 9700 12.7 -M * 15.5 -M * EF Blacks Fork GS 9360 8.9 -M * 9.0 -M * Hams Fork 7840 -M 10.5 * -M 10.4 * Hewinta 9519 10.9 9.9 110 12.3 12.6 98 Hickerson Park 9145 9.5 6.8 140 9.7 9.1 107 Hole-in-Rock 9150 8.8 6.9 128 10.5 8.6 122 Indian Creek 9425 20.0 22.0 91 15.7 20.6 76 Kelley R.S. 8180 12.7 14.0 91 14.1 16.6 85 Spirit Lk 10235 11.9 -M * 14.0 -M * Steel Creek Park 10200 14.7 13.7 107 16.8 14.6 115 ----- ----- Basin Index (%) 105 96 UPPER BEAR RIVER Bear River RS 8777 7.7 -M * 11.1 -M * Bug Lake 7950 17.2 17.2 100 17.3 17.8 97 Burts Miller Ranch 8000 4.7 -M * 5.4 -M * Chalk Creek #1 8993 18.7 22.0 85 20.5 22.8 90 Hayden Fork 9212 13.1 14.5 90 17.8 19.0 94 Kelley R.S. 8180 12.7 14.0 91 14.1 16.6 85 Lily Lake 9156 12.3 11.6 106 12.2 15.4 79 Monte Cristo 8960 25.6 25.0 102 25.0 23.6 106 Salt River Summit 7760 12.5 12.2 102 14.2 15.3 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.