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 20 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 4.3 0 26.9 26.1 103 BLACK BEAR 8170 35.7 34.5 103 50.9 48.7 105 BLIND BULL SUM 8650 16.6 23.3 71 19.7 27.1 73 COTTONWOOD CREEK 7670 .0 11.5 0 28.9 34.5 84 EAST RIM DIVIDE 7930 .0 7.1 0 13.2 15.2 87 GRAND TARGHEE 9260 31.5 -M * 34.9 -M * GRANITE CREEK 6770 .0 5.9 0 20.3 24.0 85 GRASSY LAKE 7265 11.3 23.3 48 44.6 43.5 103 GROS VENTRE SUMMIT 8750 .1 8.2 1 13.8 16.7 83 GUNSIGHT PASS 9820 5.4 -M * 18.2 -M * LEWIS LAKE DIVIDE 7850 16.3 26.2 62 41.1 44.0 93 PHILLIPS BENCH 8200 6.3 21.4 29 28.8 35.4 81 SALT RIVER SUMMIT 7760 -M 2.5 * 11.3 23.2 49 SNAKE RIVER STATION 6920 .0 3.1 0 28.0 27.3 103 SPRING CREEK DIVIDE 9000 13.8 22.3 62 26.1 32.1 81 THUMB DIVIDE 7980 .0 7.5 0 22.6 23.8 95 TOGWOTEE PASS 9580 17.0 26.3 65 28.6 31.4 91 TWO OCEAN PLATEAU 9240 30.1 29.6 102 33.4 34.8 96 WILLOW CREEK 8380 2.4 22.5 11 39.0 40.9 95 YOUNTS PEAK 8350 2.7 13.5 20 19.1 20.8 92 ----- ----- Basin wide percent of average 52 90 MADISON-GALLATIN BLACK BEAR 8170 35.7 34.5 103 50.9 48.7 105 CANYON 7870 .4 5.2 8 19.6 19.4 101 MADISON PLATEAU 7750 14.2 16.9 84 37.9 32.8 116 WEST YELLOWSTONE 6700 .0 .2 0* 21.4 17.0 126 WHISKEY CREEK 6800 1.7 7.2 24 28.4 26.1 109 ----- ----- Basin wide percent of average 81 110 YELLOWSTONE BEARTOOTH LAKE 9360 25.1 24.4 103 30.2 25.8 117 BURNT MTN 5880 .0 .0 100* 15.2 23.5 65 CANYON 7870 .4 5.2 8 19.6 19.4 101 COLE CREEK 7850 2.9 17.1 17 15.4 25.5 60 EVENING STAR 9200 22.6 31.3 72 38.7 32.7 118 FISHER CREEK 9100 39.4 35.0 113 43.4 44.9 97 NORTHEAST ENTRANCE 7350 .0 1.7 0 -M 16.5 * PARKER PEAK 9400 16.2 23.1 70 28.5 21.8 131 SYLVAN LAKE 8420 4.6 18.2 25 31.4 27.3 115 THUMB DIVIDE 7980 .0 7.5 0 22.6 23.8 95 TWO OCEAN PLATEAU 9240 30.1 29.6 102 33.4 34.8 96 WHITE MILL 8700 20.8 23.4 89 30.4 33.7 90 WOLVERINE 7650 -M 1.7 * 15.3 17.2 89 ----- ----- Basin wide percent of average 75 98 WIND RIVER BURROUGHS CREEK 8750 2.8 8.8 32 16.4 21.4 77 CASTLE CREEK 8400 .0 -M * 10.3 -M * COLD SPRINGS 9630 .0 2.3 0 10.4 16.0 65 DEER PARK 9700 .3 16.4 2 20.7 29.5 70 HOBBS PARK 10100 .4 15.5 3 16.2 19.6 83 KIRWIN 9550 .1 10.0 1 17.2 16.3 106 LITTLE WARM 9370 .0 5.9 0 14.8 18.9 78 OWL CREEK 8975 .1 1.6 6 6.4 10.0 64 SOUTH PASS 9040 .0 11.6 0 15.1 25.0 60 ST. LAWRENCE ALT 8620 .1 2.2 5 9.9 14.2 70 TOGWOTEE PASS 9580 17.0 26.3 65 28.6 31.4 91 TOWNSEND CREEK 8700 .0 4.3 0 13.3 17.7 75 ----- ----- Basin wide percent of average 20 77 BIGHORN BASIN BALD MTN. 9380 19.1 22.0 87 20.0 24.0 83 BEAR TRAP MEADOW 8200 .0 .1 0* 13.9 13.0 107 BONE SPRINGS DIV 9350 12.1 14.6 83 20.3 20.9 97 GRAVE SPRINGS 8550 .0 5.2 0 14.6 15.1 97 KIRWIN 9550 .1 10.0 1 17.2 16.3 106 MARQUETTE 8760 .0 -M * 13.3 16.5 81 MIDDLE POWDER 7760 .1 8.5 1 16.2 18.0 90 OWL CREEK 8975 .1 1.6 6 6.4 10.0 64 POWDER RIVER PASS 9480 .5 6.4 8 21.6 18.2 119 SHELL CREEK 9580 16.7 15.1 111 21.1 19.2 110 TIMBER CREEK 7950 .2 1.7 12 11.4 13.0 88 ----- ----- Basin wide percent of average 57 96 SHOSHONE RIVER BLACKWATER 9780 20.7 28.7 72 29.5 27.3 108 EVENING STAR 9200 22.6 31.3 72 38.7 32.7 118 MARQUETTE 8760 .0 -M * 13.3 16.5 81 SYLVAN ROAD 7120 .0 1.4 0 22.6 22.3 101 YOUNTS PEAK 8350 2.7 13.5 20 19.1 20.8 92 ----- ----- Basin wide percent of average 61 103 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .1 0* 13.9 13.0 107 CLOUD PEAK RESERVOIR 9860 2.1 13.4 16 19.8 20.1 99 GRAVE SPRINGS 8550 .0 5.2 0 14.6 15.1 97 HANSEN SAWMILL 8360 .0 1.2 0 12.2 12.9 95 MIDDLE POWDER 7760 .1 8.5 1 16.2 18.0 90 POWDER RIVER PASS 9480 .5 6.4 8 21.6 18.2 119 SOLDIER PARK 8720 .0 -M * 13.2 -M * ----- ----- Basin wide percent of average 8 101 TONGUE RIVER BIG GOOSE 7990 .0 7.9 0 17.9 15.3 117 BONE SPRINGS DIV 9350 12.1 14.6 83 20.3 20.9 97 BURGESS JUNCTION 7880 .1 8.1 1 18.1 17.5 103 DOME LAKE 8880 .0 8.5 0 21.1 19.3 109 LITTLE GOOSE 8870 .2 -M * 21.6 -M * SUCKER CREEK 8880 .3 8.5 4 20.9 20.2 103 TIE CREEK 6870 .0 .6 0* 17.2 16.0 108 ----- ----- Basin wide percent of average 26 106 BELLE FOURCHE COLE CANYON 5910 .0 .3 0* 12.1 11.7 103 ----- ----- Basin wide percent of average 0* 103 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 100* 15.1 16.5 92 NORTH RAPID CREEK 6130 .0 .2 0* 13.1 13.1 100 ----- ----- Basin wide percent of average 0* 95 UPPER N. PLATTE ARAPAHO RIDGE 10960 .0 22.9 0 19.7 33.1 60 BLACKHALL MTN 9820 .0 -M * 26.9 -M * COLUMBINE 9160 .0 9.4 0 22.5 31.2 72 DIVIDE PEAK 8880 .0 9.9 0 21.3 26.4 81 JOE WRIGHT 10120 -M 22.5 * 23.3 33.2 70 LAPRELE CREEK 8375 .0 2.5 0 13.5 18.9 71 NORTH FRENCH CREEK 10130 2.0 31.4 6 24.3 32.8 74 NEVER SUMMER 10280 1.3 21.4 6 14.2 31.6 45 OLD BATTLE 10000 -M 33.3 * -M 42.8 * RAWAH 9020 .0 9.8 0 14.2 22.0 65 SAGE CREEK BASIN 7850 -M 5.7 * 11.8 15.3 77 SAND LAKE 10050 16.0 33.7 47 27.4 32.6 84 SOUTH BRUSH CREEK 8440 .0 4.8 0 13.9 22.5 62 TOWER 10500 15.8 50.0 32 36.1 48.5 74 WEBBER SPRINGS 9250 .0 14.6 0 25.1 33.5 75 WILLOW CREEK PASS 9540 -M 8.9 * 11.6 17.6 66 ZIRKEL 9340 .0 9.7 0 28.4 32.2 88 ----- ----- Basin wide percent of average 16 71 SWEETWATER DEER PARK 9700 .3 16.4 2 20.7 29.5 70 LARSEN CREEK 9000 .2 -M * 16.4 -M * SOUTH PASS 9040 .0 11.6 0 15.1 25.0 60 ----- ----- Basin wide percent of average 1 66 LOWER N. PLATTE CASPER MTN. 7900 .0 9.2 0 20.8 22.5 92 LAPRELE CREEK 8375 .0 2.5 0 13.5 18.9 71 RENO HILL 8400 .0 7.6 0 21.4 23.3 92 WINDY PEAK 7900 .0 1.0 0 10.2 15.8 65 ----- ----- Basin wide percent of average 0 82 LARAMIE RIVER BROOKLYN LAKE 10240 .8 20.0 4 22.6 29.8 76 CINNABAR PARK 9574 .1 8.0 1 22.5 25.9 87 CROW CREEK 8330 .0 .6 0* 12.2 13.9 88 DEADMAN HILL 10220 -M 16.5 * 19.4 23.4 83 RAWAH 9020 .0 9.8 0 14.2 22.0 65 ROACH 9700 .2 11.1 2 19.8 25.0 79 ----- ----- Basin wide percent of average 2 79 S. PLATTE BLACK MOUNTAIN 8920 .0 -M * 15.1 -M * CROW CREEK 8330 .0 .6 0* 12.2 13.9 88 DEADMAN HILL 10220 -M 16.5 * 19.4 23.4 83 ----- ----- Basin wide percent of average 0* 85 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 13.5 20.2 67 DIVIDE PEAK 8880 .0 9.9 0 21.3 26.4 81 ELK RIVER 8700 .0 5.1 0 17.5 25.0 70 LITTLE SNAKE RIVER 8915 .0 -M * 27.1 -M * OLD BATTLE 10000 -M 33.3 * -M 42.8 * SAGE CREEK BASIN 7850 -M 5.7 * 11.8 15.3 77 SANDSTONE RS 8150 .0 2.2 0 13.0 23.8 55 WHISKEY PARK 8950 -M 23.5 * 27.3 36.6 75 ----- ----- Basin wide percent of average 0* 71 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 7.0 0 16.4 17.6 93 BLIND BULL SUM 8650 16.6 23.3 71 19.7 27.1 73 EAST RIM DIVIDE 7930 .0 7.1 0 13.2 15.2 87 ELKHART PARK G.S. 9400 .2 7.8 3 17.5 17.9 98 GROS VENTRE SUMMIT 8750 .1 8.2 1 13.8 16.7 83 GUNSIGHT PASS 9820 5.4 -M * 18.2 -M * KENDALL R.S. 7740 .0 1.1 0* 16.3 17.9 91 LOOMIS PARK 8240 .1 7.7 1 18.5 21.6 86 NEW FORK LAKE 8340 .1 1.9 5 13.0 14.9 87 POCKET CREEK 9360 -M -M * 15.0 -M * SNIDER BASIN 8060 .0 5.4 0 15.1 19.7 77 SPRING CREEK DIVIDE 9000 13.8 22.3 62 26.1 32.1 81 TRIPLE PEAK 8500 .0 13.8 0 28.8 30.8 94 ----- ----- Basin wide percent of average 29 86 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 12.5 -M * BUCK PASTURE 9700 .1 -M * 6.4 -M * EF BLACKS FORK GS 9308 .0 -M * 12.4 -M * HAMS FORK 7840 .1 .0 * 12.2 16.2 75 HEWINTA 9519 .0 2.9 0 15.0 19.4 77 HICKERSON PARK 9145 .0 1.1 0 14.1 11.7 121 HOLE-IN-ROCK 9150 .2 .9 22 14.2 11.3 126 INDIAN CREEK 9425 3.1 21.4 14 21.3 31.4 68 KELLEY R.S. 8180 .0 7.0 0 17.8 25.3 70 SPIRIT LK 10223 .0 -M * 20.5 -M * STEEL CREEK PARK 10200 1.5 16.8 9 17.1 22.1 77 ----- ----- Basin wide percent of average 10 81 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 12.2 -M * BUG LAKE 7950 .1 8.1 1 18.5 24.2 76 BURTS MILLER RANCH 8000 .3 -M * 10.6 -M * CHALK CREEK #1 8993 .1 18.6 1 22.8 32.3 71 HAYDEN FORK 9212 .2 5.2 4 20.9 27.3 77 KELLEY R.S. 8180 .0 7.0 0 17.8 25.3 70 LILY LAKE 9156 .0 4.6 0 14.7 23.0 64 MONTE CRISTO 8960 .1 20.0 0 22.9 32.8 70 SALT RIVER SUMMIT 7760 -M 2.5 * 11.3 23.2 49 ----- ----- Basin wide percent of average 1 69 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average 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 Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average 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. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -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.