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: MAY 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 .0 .0 * 22.8 24.9 92 Black Bear 8170 19.3 31.8 61 40.2 45.2 89 Blind Bull Sum 8650 19.8 17.6 112 20.0 23.7 84 Cottonwood Creek 7670 3.0 2.4 125 33.9 30.5 111 East Rim Divide 7930 -M .0 * 14.5 14.5 100 Grand Targhee 9260 35.6 41.3 86 37.8 37.6 101 Granite Creek 6770 .0 .0 * 20.7 23.3 89 Grassy Lake 7265 3.6 13.2 27 40.0 42.4 94 Gros Ventre Summit 8750 .0 2.8 0 13.9 16.4 85 Gunsight Pass 9820 9.6 8.0 120 19.0 18.0 106 Lewis Lake Divide 7850 3.6 19.4 19 35.0 41.5 84 Phillips Bench 8200 6.9 16.0 43 30.9 33.3 93 Salt River Summit 7760 .0 .0 * 21.5 20.2 106 Snake River Station 6920 .0 .0 * 25.0 27.0 93 Spring Creek Divide 9000 21.0 17.5 120 30.5 28.5 107 Thumb Divide 7980 .0 .0 * 17.5 23.1 76 Togwotee Pass 9580 17.5 22.6 77 29.9 30.2 99 Two Ocean Plateau 9240 -M 27.7 * -M 33.4 * Willow Creek 8380 7.0 12.4 56 40.9 41.5 99 Younts Peak 8350 .0 10.2 0 16.4 20.0 82 ----- ----- Basin Index (%) 68 94 MADISON-GALLATIN Black Bear 8170 19.3 31.8 61 40.2 45.2 89 Canyon 7870 .2 .4 50* 15.7 20.2 78 Madison Plateau 7750 4.4 12.4 35 26.7 32.1 83 West Yellowstone 6700 .0 .0 * 16.1 17.8 90 Whiskey Creek 6800 .0 3.1 0 19.7 24.7 80 ----- ----- Basin Index (%) 50 85 YELLOWSTONE Beartooth Lake 9360 14.5 20.6 70 20.8 24.5 85 Burnt Mtn 5880 .0 .0 * 17.5 19.8 88 Canyon 7870 .2 .4 50* 15.7 20.2 78 Cole Creek 7850 9.1 14.2 64 19.2 20.1 96 Evening Star 9200 17.8 22.2 80 32.5 33.9 96 Fisher Creek 9100 23.3 31.6 74 29.6 38.9 76 Northeast Entrance 7350 .0 .0 * 13.5 15.9 85 Parker Peak 9400 10.5 18.9 56 24.5 22.9 107 Sylvan Lake 8420 .2 13.2 2 27.6 28.2 98 Thumb Divide 7980 .0 .0 * 17.5 23.1 76 Two Ocean Plateau 9240 -M 27.7 * -M 33.4 * White Mill 8700 13.4 21.2 63 24.5 29.4 83 Wolverine 7650 .0 .0 * 14.2 15.8 90 ----- ----- Basin Index (%) 63 88 WIND RIVER Burroughs Creek 8750 .0 -M * 18.3 -M * Castle Creek 8400 .0 -M * 11.0 -M * Cold Springs 9630 2.6 .0 * 17.6 14.7 120 Deer Park 9700 15.9 8.6 185 27.6 26.4 105 Hobbs Park 10100 21.3 11.3 188 27.5 19.7 140 Kirwin 9550 7.6 6.5 117 19.4 16.3 119 Little Warm 9370 .0 .6 0* 15.6 17.8 88 Owl Creek 8975 .0 .0 * 12.9 10.0 129 South Pass 9040 11.8 3.3 358 22.2 22.8 97 St. Lawrence Alt 8620 .0 .0 * 19.3 13.8 140 Togwotee Pass 9580 17.5 22.6 77 29.9 30.2 99 Townsend Creek 8700 6.8 .0 * 24.2 17.5 138 ----- ----- Basin Index (%) 158* 114 BIGHORN BASIN Bald Mtn. 9380 11.5 17.6 65 16.7 22.6 74 Bear Trap Meadow 8200 .0 .0 * 11.8 13.1 90 Bone Springs Div 9350 8.1 13.0 62 15.7 21.4 73 Grave Springs 8550 .7 .1 700* 12.1 15.4 79 Kirwin 9550 7.6 6.5 117 19.4 16.3 119 Marquette 8760 .1 -M * 16.4 -M * Middle Powder 7760 1.8 1.6 112 14.3 16.6 86 Owl Creek 8975 .0 .0 * 12.9 10.0 129 Powder River Pass 9480 .0 2.5 0 12.5 17.9 70 Shell Creek 9580 9.2 14.1 65 14.6 19.1 76 Timber Creek 7950 .0 .0 * 17.9 12.7 141 ----- ----- Basin Index (%) 70 90 SHOSHONE RIVER Blackwater 9780 20.1 23.4 86 29.1 26.5 110 Evening Star 9200 17.8 22.2 80 32.5 33.9 96 Marquette 8760 .1 -M * 16.4 -M * Sylvan Road 7120 .0 .0 * 17.9 20.6 87 Younts Peak 8350 .0 10.2 0 16.4 20.0 82 ----- ----- Basin Index (%) 68 95 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 11.8 13.1 90 Cloud Peak Reservoir 9860 8.9 12.6 71 19.3 20.3 95 Grave Springs 8550 .7 .1 700* 12.1 15.4 79 Hansen Sawmill 8360 .0 .0 * 13.2 13.4 99 Middle Powder 7760 1.8 1.6 112 14.3 16.6 86 Powder River Pass 9480 .0 2.5 0 12.5 17.9 70 Soldier Park 8720 .0 -M * 13.0 -M * ----- ----- Basin Index (%) 68* 86 TONGUE RIVER Big Goose 7990 1.6 1.3 123 15.3 17.6 87 Bone Springs Div 9350 8.1 13.0 62 15.7 21.4 73 Burgess Junction 7880 3.3 5.4 61 15.0 17.5 86 Dome Lake 8880 3.7 3.2 116 17.0 19.6 87 Little Goose 8870 4.7 -M * 17.9 -M * Sucker Creek 8880 3.0 6.3 48 16.8 20.8 81 Tie Creek 6870 -M .0 * 13.8 17.9 77 ----- ----- Basin Index (%) 67 82 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 12.2 15.2 80 ----- ----- Basin Index (%) * 80 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 12.9 17.4 74 North Rapid Creek 6130 .0 .0 * 10.1 15.0 67 ----- ----- Basin Index (%) * 71 UPPER N. PLATTE Arapaho Ridge 10960 26.3 14.7 179 32.7 28.8 114 Blackhall Mtn 9820 32.5 -M * 40.9 -M * Columbine 9160 6.0 .0 * 33.1 30.8 107 Divide Peak 8880 10.2 2.2 464 35.3 26.7 132 Joe Wright 10120 -M 19.1 * -M 33.2 * Laprele Creek 8375 .0 .0 * 17.9 17.2 104 Med Bow 10500 39.6 -M * 43.1 -M * North French Creek 10130 30.0 26.9 112 37.8 34.2 111 Never Summer 10280 20.2 18.4 110 23.2 -M * Old Battle 10000 37.6 30.7 122 42.1 42.5 99 Rawah 9020 1.3 .0 * 25.2 19.1 132 Sage Creek Basin 7850 -M .0 * 18.5 17.6 105 Sand Lake 10050 32.1 25.8 124 37.2 32.3 115 South Brush Creek 8440 .0 .0 * 22.8 20.4 112 Tower 10500 46.0 45.6 101 50.1 48.3 104 Webber Springs 9250 17.7 7.7 230 35.8 32.4 110 Willow Creek Pass 9540 11.2 6.8 165 21.4 17.7 121 Zirkel 9340 -M 3.3 * 38.9 33.6 116 ----- ----- Basin Index (%) 133 112 SWEETWATER Deer Park 9700 15.9 8.6 185 27.6 26.4 105 Larsen Creek 9000 .1 2.4 4 19.0 -M * South Pass 9040 11.8 3.3 358 22.2 22.8 97 ----- ----- Basin Index (%) 194 101 LOWER N. PLATTE Casper Mtn. 7900 7.6 1.6 475 23.4 20.9 112 Laprele Creek 8375 .0 .0 * 17.9 17.2 104 Reno Hill 8400 8.1 .2 4050* 26.2 21.8 120 Windy Peak 7900 .0 .0 * 18.5 15.3 121 ----- ----- Basin Index (%) 872* 114 LARAMIE RIVER Brooklyn Lake 10240 19.9 12.8 155 32.1 27.6 116 Cinnabar Park 9574 18.7 8.5 220 32.1 29.8 108 Crow Creek 8330 .3 .0 * -M 15.6 * Deadman Hill 10220 19.3 14.0 138 27.0 23.4 115 Rawah 9020 1.3 .0 * 25.2 19.1 132 Roach 9700 16.4 8.3 198 31.2 25.0 125 ----- ----- Basin Index (%) 174 118 S. PLATTE Black Mountain 8920 1.2 -M * 23.9 -M * Crow Creek 8330 .3 .0 * -M 15.6 * Deadman Hill 10220 19.3 14.0 138 27.0 23.4 115 ----- ----- Basin Index (%) 140* 115* LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 24.5 18.8 130 Divide Peak 8880 10.2 2.2 464 35.3 26.7 132 Elk River 8700 1.2 .0 * 24.4 24.8 98 Little Snake River 8915 18.2 8.8 207 43.4 35.6 122 Old Battle 10000 37.6 30.7 122 42.1 42.5 99 Sage Creek Basin 7850 -M .0 * 18.5 17.6 105 Sandstone RS 8150 -M .0 * 21.2 22.8 93 Whiskey Park 8950 32.4 17.5 185 39.8 34.1 117 ----- ----- Basin Index (%) 168 112 UPPER GREEN RIVER Big Sandy Opening 9080 2.6 .2 1300* 18.3 17.2 106 Blind Bull Sum 8650 19.8 17.6 112 20.0 23.7 84 East Rim Divide 7930 -M .0 * 14.5 14.5 100 Elkhart Park G.S. 9400 1.0 3.7 27 16.8 17.2 98 Gros Ventre Summit 8750 .0 2.8 0 13.9 16.4 85 Gunsight Pass 9820 9.6 8.0 120 19.0 18.0 106 Kendall R.S. 7740 -M .0 * 15.9 17.0 94 Loomis Park 8240 .0 .1 0* 20.2 20.9 97 New Fork Lake 8340 .0 .0 * 15.4 13.8 112 Pocket Creek 9360 3.0 -M * 15.6 -M * Snider Basin 8060 .0 .0 * 19.6 17.1 115 Spring Creek Divide 9000 21.0 17.5 120 30.5 28.5 107 Triple Peak 8500 6.7 4.5 149 33.0 30.7 107 ----- ----- Basin Index (%) 112* 101 LOWER GREEN RIVER Blacks Fork Jct 8870 .9 -M * 18.4 -M * Buck Pasture 9700 5.4 -M * 24.7 -M * EF Blacks Fork GS 9360 .0 -M * 20.3 -M * Hams Fork 7840 .0 .0 * 16.6 14.7 113 Hewinta 9519 .3 .0 * 20.2 18.0 112 Hickerson Park 9145 .0 .0 * 20.5 13.8 149 Hole-in-Rock 9150 .0 .0 * 20.4 13.4 152 Indian Creek 9425 15.8 15.6 101 25.5 27.4 93 Kelley R.S. 8180 .0 .3 0* 22.8 22.2 103 Spirit Lk 10235 16.6 -M * 28.0 -M * Steel Creek Park 10200 20.8 12.8 162 28.4 21.4 133 ----- ----- Basin Index (%) 129* 118 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 18.5 -M * Bug Lake 7950 .3 .3 100* 24.5 23.8 103 Burts Miller Ranch 8000 .0 -M * 9.7 -M * Chalk Creek #1 8993 9.5 11.9 80 29.4 31.2 94 Hayden Fork 9212 .1 .0 * 27.2 26.2 104 Kelley R.S. 8180 .0 .3 0* 22.8 22.2 103 Lily Lake 9156 .2 .0 * 21.6 21.7 100 Monte Cristo 8960 14.4 10.8 133 35.0 32.0 109 Salt River Summit 7760 .0 .0 * 21.5 20.2 106 ----- ----- Basin Index (%) 105* 103 ----------------------------------------------------------------------------- -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.