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 SUNDAY: MAY 22 , 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 * 22.7 24.7 92 Black Bear 8170 19.1 32.7 58 39.8 44.9 89 Blind Bull Sum 8650 21.1 18.8 112 20.0 23.4 85 Cottonwood Creek 7670 -M 4.4 * -M 30.2 * East Rim Divide 7930 -M .0 * 14.4 14.3 101 Grand Targhee 9260 -M 41.6 * -M 37.1 * Granite Creek 6770 .0 .0 * 20.9 23.1 90 Grassy Lake 7265 4.5 15.4 29 39.9 42.1 95 Gros Ventre Summit 8750 .1 4.2 2 13.5 16.3 83 Gunsight Pass 9820 -M 9.3 * -M 17.8 * Lewis Lake Divide 7850 4.5 21.0 21 35.0 41.2 85 Phillips Bench 8200 7.2 17.6 41 30.8 33.1 93 Salt River Summit 7760 .0 .0 * 21.4 20.1 106 Snake River Station 6920 .0 .0 * 24.9 26.7 93 Spring Creek Divide 9000 20.9 19.0 110 30.2 28.3 107 Thumb Divide 7980 .0 .3 0* 17.4 22.9 76 Togwotee Pass 9580 17.5 22.8 77 29.7 29.9 99 Two Ocean Plateau 9240 -M 28.0 * -M 33.2 * Willow Creek 8380 -M 14.7 * -M 41.2 * Younts Peak 8350 .0 11.1 0 16.2 19.8 82 ----- ----- Basin Index (%) 58* 92 MADISON-GALLATIN Black Bear 8170 19.1 32.7 58 39.8 44.9 89 Canyon 7870 .2 1.1 18* 15.3 20.0 76 Madison Plateau 7750 4.6 13.3 35 26.3 31.8 83 West Yellowstone 6700 .1 .0 * 15.8 17.7 89 Whiskey Creek 6800 .0 4.3 0 19.0 24.5 78 ----- ----- Basin Index (%) 47 84 YELLOWSTONE Beartooth Lake 9360 14.3 21.1 68 20.5 24.3 84 Burnt Mtn 5880 .0 .0 * 17.4 19.4 90 Canyon 7870 .2 1.1 18* 15.3 20.0 76 Cole Creek 7850 9.9 15.2 65 -M 19.7 * Evening Star 9200 17.8 23.0 77 32.3 33.6 96 Fisher Creek 9100 22.1 32.2 69 28.7 38.6 74 Northeast Entrance 7350 .0 .0 * 13.2 15.7 84 Parker Peak 9400 10.6 19.4 55 24.2 22.6 107 Sylvan Lake 8420 .4 14.2 3 27.3 27.9 98 Thumb Divide 7980 .0 .3 0* 17.4 22.9 76 Two Ocean Plateau 9240 -M 28.0 * -M 33.2 * White Mill 8700 12.8 21.6 59 24.0 29.2 82 Wolverine 7650 .0 .0 * 13.7 15.7 87 ----- ----- Basin Index (%) 59 87 WIND RIVER Burroughs Creek 8750 .0 -M * 18.1 -M * Castle Creek 8400 .0 -M * 11.0 -M * Cold Springs 9630 4.5 .0 * 17.4 14.5 120 Deer Park 9700 16.1 9.5 169 27.3 26.1 105 Hobbs Park 10100 21.7 12.2 178 27.2 19.5 139 Kirwin 9550 8.5 7.5 113 19.3 16.1 120 Little Warm 9370 .5 1.5 33 15.3 17.5 87 Owl Creek 8975 .0 .0 * 12.9 9.8 132 South Pass 9040 12.3 4.9 251 22.1 22.6 98 St. Lawrence Alt 8620 .0 .0 * 19.3 13.6 142 Togwotee Pass 9580 17.5 22.8 77 29.7 29.9 99 Townsend Creek 8700 8.1 .0 * 24.1 17.2 140 ----- ----- Basin Index (%) 153 115 BIGHORN BASIN Bald Mtn. 9380 11.9 18.4 65 16.7 22.2 75 Bear Trap Meadow 8200 .0 .0 * 11.9 12.8 93 Bone Springs Div 9350 8.3 13.7 61 15.8 21.1 75 Grave Springs 8550 1.7 .9 189* 12.2 15.1 81 Kirwin 9550 8.5 7.5 113 19.3 16.1 120 Marquette 8760 .8 -M * 16.3 -M * Middle Powder 7760 3.0 3.5 86 14.3 16.4 87 Owl Creek 8975 .0 .0 * 12.9 9.8 132 Powder River Pass 9480 .1 4.0 2 12.5 17.5 71 Shell Creek 9580 9.6 14.6 66 14.4 18.7 77 Timber Creek 7950 -M .0 * 17.9 12.4 144 ----- ----- Basin Index (%) 69 91 SHOSHONE RIVER Blackwater 9780 20.6 23.8 87 29.0 26.2 111 Evening Star 9200 17.8 23.0 77 32.3 33.6 96 Marquette 8760 .8 -M * 16.3 -M * Sylvan Road 7120 .0 .0 * 17.7 20.4 87 Younts Peak 8350 .0 11.1 0 16.2 19.8 82 ----- ----- Basin Index (%) 66 95 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 11.9 12.8 93 Cloud Peak Reservoir 9860 9.9 13.8 72 19.3 19.8 97 Grave Springs 8550 1.7 .9 189* 12.2 15.1 81 Hansen Sawmill 8360 .1 .0 * 13.2 13.1 101 Middle Powder 7760 3.0 3.5 86 14.3 16.4 87 Powder River Pass 9480 .1 4.0 2 12.5 17.5 71 Soldier Park 8720 .0 -M * 13.1 -M * ----- ----- Basin Index (%) 67* 88 TONGUE RIVER Big Goose 7990 3.3 2.9 114 15.4 17.3 89 Bone Springs Div 9350 8.3 13.7 61 15.8 21.1 75 Burgess Junction 7880 4.5 6.9 65 15.1 17.2 88 Dome Lake 8880 4.8 4.7 102 16.7 19.2 87 Little Goose 8870 6.0 -M * 17.9 -M * Sucker Creek 8880 4.3 7.6 57 16.8 20.5 82 Tie Creek 6870 -M .0 * 13.8 17.4 79 ----- ----- Basin Index (%) 70 83 BELLE FOURCHE Cole Canyon 5910 .2 .0 * 12.2 15.0 81 ----- ----- Basin Index (%) * 81 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 12.8 17.0 75 North Rapid Creek 6130 .0 .0 * 10.1 14.7 69 ----- ----- Basin Index (%) * 72 UPPER N. PLATTE Arapaho Ridge 10960 27.1 16.5 164 32.8 28.5 115 Blackhall Mtn 9820 33.5 -M * 41.0 -M * Columbine 9160 8.2 .6 1367* 33.3 30.7 108 Divide Peak 8880 11.6 3.9 297 35.2 26.6 132 Joe Wright 10120 -M 20.2 * -M 33.0 * Laprele Creek 8375 .0 .0 * 18.1 17.0 106 Med Bow 10500 40.2 -M * 43.0 -M * North French Creek 10130 30.7 28.2 109 37.8 33.9 112 Never Summer 10280 21.1 19.2 110 23.2 -M * Old Battle 10000 37.9 31.8 119 41.9 42.3 99 Rawah 9020 2.9 .3 967* 25.3 18.9 134 Sage Creek Basin 7850 -M .0 * 18.3 17.5 105 Sand Lake 10050 32.9 27.0 122 37.0 32.1 115 South Brush Creek 8440 .0 .0 * 22.8 20.3 112 Tower 10500 46.8 46.9 100 50.1 48.1 104 Webber Springs 9250 18.6 9.9 188 35.7 32.2 111 Willow Creek Pass 9540 12.8 8.2 156 21.4 17.5 122 Zirkel 9340 -M 6.5 * 38.8 33.4 116 ----- ----- Basin Index (%) 130 112 SWEETWATER Deer Park 9700 16.1 9.5 169 27.3 26.1 105 Larsen Creek 9000 .3 3.0 10 18.8 -M * South Pass 9040 12.3 4.9 251 22.1 22.6 98 ----- ----- Basin Index (%) 165 101 LOWER N. PLATTE Casper Mtn. 7900 9.1 2.9 314 23.3 20.6 113 Laprele Creek 8375 .0 .0 * 18.1 17.0 106 Reno Hill 8400 9.4 1.7 553 26.2 21.6 121 Windy Peak 7900 .0 .0 * 18.7 15.0 125 ----- ----- Basin Index (%) 402 116 LARAMIE RIVER Brooklyn Lake 10240 20.8 14.6 142 32.0 27.4 117 Cinnabar Park 9574 19.6 10.5 187 32.0 29.6 108 Crow Creek 8330 .3 .0 * -M 15.2 * Deadman Hill 10220 20.2 15.3 132 27.0 23.2 116 Rawah 9020 2.9 .3 967* 25.3 18.9 134 Roach 9700 17.8 10.0 178 31.2 24.8 126 ----- ----- Basin Index (%) 161 119 S. PLATTE Black Mountain 8920 3.2 -M * 23.9 -M * Crow Creek 8330 .3 .0 * -M 15.2 * Deadman Hill 10220 20.2 15.3 132 27.0 23.2 116 ----- ----- Basin Index (%) 134* 116* LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 24.3 18.7 130 Divide Peak 8880 11.6 3.9 297 35.2 26.6 132 Elk River 8700 3.3 .0 * 24.4 24.7 99 Little Snake River 8915 19.1 11.0 174 43.3 35.2 123 Old Battle 10000 37.9 31.8 119 41.9 42.3 99 Sage Creek Basin 7850 -M .0 * 18.3 17.5 105 Sandstone RS 8150 -M .0 * 21.0 22.6 93 Whiskey Park 8950 33.1 20.0 166 39.7 34.0 117 ----- ----- Basin Index (%) 157 112 UPPER GREEN RIVER Big Sandy Opening 9080 2.7 1.1 245* 18.2 17.0 107 Blind Bull Sum 8650 21.1 18.8 112 20.0 23.4 85 East Rim Divide 7930 -M .0 * 14.4 14.3 101 Elkhart Park G.S. 9400 1.1 4.7 23 16.7 17.0 98 Gros Ventre Summit 8750 .1 4.2 2 13.5 16.3 83 Gunsight Pass 9820 -M 9.3 * -M 17.8 * Kendall R.S. 7740 -M .0 * 16.0 16.9 95 Loomis Park 8240 -M 1.0 * -M 20.7 * New Fork Lake 8340 .3 .0 * 15.2 13.7 111 Pocket Creek 9360 3.0 -M * 15.1 -M * Snider Basin 8060 .0 .0 * 19.6 16.9 116 Spring Creek Divide 9000 20.9 19.0 110 30.2 28.3 107 Triple Peak 8500 7.4 6.4 116 32.9 30.4 108 ----- ----- Basin Index (%) 99* 101 LOWER GREEN RIVER Blacks Fork Jct 8870 -M -M * -M -M * Buck Pasture 9700 5.5 -M * 24.5 -M * EF Blacks Fork GS 9360 .0 -M * 20.1 -M * Hams Fork 7840 .0 .0 * 16.6 14.6 114 Hewinta 9519 -M .0 * -M 17.9 * Hickerson Park 9145 .6 .0 * 20.4 13.6 150 Hole-in-Rock 9150 .0 .0 * 20.3 13.2 154 Indian Creek 9425 15.7 17.0 92 25.4 27.2 93 Kelley R.S. 8180 .3 1.2 25* 22.7 22.0 103 Spirit Lk 10235 17.0 -M * 28.0 -M * Steel Creek Park 10200 20.8 13.7 152 28.3 21.2 133 ----- ----- Basin Index (%) 117* 120 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 18.5 -M * Bug Lake 7950 .4 2.5 16 24.4 23.7 103 Burts Miller Ranch 8000 .0 -M * 9.7 -M * Chalk Creek #1 8993 10.0 13.7 73 29.4 31.1 95 Hayden Fork 9212 .1 .0 * 26.9 26.0 103 Kelley R.S. 8180 .3 1.2 25* 22.7 22.0 103 Lily Lake 9156 .4 .0 * 21.4 21.5 100 Monte Cristo 8960 14.2 12.9 110 34.6 31.8 109 Salt River Summit 7760 .0 .0 * 21.4 20.1 106 ----- ----- Basin Index (%) 84* 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.