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 6 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 3.6 10.4 35 26.7 24.8 108 BLACK BEAR 8170 43.7 39.0 112 50.5 46.6 108 BLIND BULL SUM 8650 24.2 27.1 89 19.5 25.7 76 COTTONWOOD CREEK 7670 11.1 17.9 62 28.7 32.6 88 EAST RIM DIVIDE 7930 .0 12.1 0 12.9 14.2 91 GRAND TARGHEE 9260 38.2 -M * 34.4 -M * GRANITE CREEK 6770 1.1 11.2 10 18.9 22.8 83 GRASSY LAKE 7265 25.1 31.3 80 44.4 41.6 107 GROS VENTRE SUMMIT 8750 .9 12.3 7 12.4 15.7 79 GUNSIGHT PASS 9820 10.6 -M * 17.4 -M * LEWIS LAKE DIVIDE 7850 27.5 33.0 83 40.0 42.3 95 PHILLIPS BENCH 8200 17.8 28.0 64 28.7 33.7 85 SALT RIVER SUMMIT 7760 .0 8.8 0 12.0 22.0 55 SNAKE RIVER STATION 6920 .1 10.1 1 27.9 26.0 107 SPRING CREEK DIVIDE 9000 21.9 27.7 79 25.8 30.7 84 THUMB DIVIDE 7980 8.3 13.2 63 22.4 22.5 100 TOGWOTEE PASS 9580 21.7 28.1 77 27.9 29.6 94 TWO OCEAN PLATEAU 9240 36.8 31.7 116 32.9 32.8 100 WILLOW CREEK 8380 17.0 29.2 58 38.1 38.6 99 YOUNTS PEAK 8350 12.0 17.6 68 18.4 19.3 95 ----- ----- Basin wide percent of average 70 94 MADISON-GALLATIN BLACK BEAR 8170 43.7 39.0 112 50.5 46.6 108 CANYON 7870 9.1 9.8 93 19.1 18.2 105 MADISON PLATEAU 7750 24.9 22.7 110 37.6 31.0 121 WEST YELLOWSTONE 6700 .0 3.8 0 21.1 15.5 136 WHISKEY CREEK 6800 11.8 13.4 88 28.4 24.7 115 ----- ----- Basin wide percent of average 101 115 YELLOWSTONE BEARTOOTH LAKE 9360 28.1 25.8 109 29.3 24.1 122 BURNT MTN 5880 .0 .7 0 14.4 21.1 68 CANYON 7870 9.1 9.8 93 19.1 18.2 105 COLE CREEK 7850 12.1 19.4 62 14.7 22.9 64 EVENING STAR 9200 30.1 33.2 91 37.8 30.6 124 FISHER CREEK 9100 40.8 37.7 108 42.9 42.7 100 NORTHEAST ENTRANCE 7350 .0 5.7 0 -M 15.2 * PARKER PEAK 9400 24.8 24.4 102 27.8 20.1 138 SYLVAN LAKE 8420 15.1 22.7 67 31.0 25.4 122 THUMB DIVIDE 7980 8.3 13.2 63 22.4 22.5 100 TWO OCEAN PLATEAU 9240 36.8 31.7 116 32.9 32.8 100 WHITE MILL 8700 26.8 26.0 103 29.7 31.9 93 WOLVERINE 7650 .0 5.9 0 14.8 15.7 94 ----- ----- Basin wide percent of average 91 103 WIND RIVER BURROUGHS CREEK 8750 11.0 12.3 89 15.7 19.9 79 CASTLE CREEK 8400 .1 -M * 9.4 -M * COLD SPRINGS 9630 .0 4.6 0 9.7 14.5 67 DEER PARK 9700 5.6 16.7 34 20.3 27.6 74 HOBBS PARK 10100 8.3 17.6 47 15.5 17.7 88 KIRWIN 9550 5.3 12.6 42 16.0 14.8 108 LITTLE WARM 9370 .0 9.8 0 13.4 17.4 77 OWL CREEK 8975 .0 3.5 0 5.8 8.7 67 SOUTH PASS 9040 4.0 16.9 24 14.8 23.4 63 ST. LAWRENCE ALT 8620 .0 5.3 0 8.7 12.7 69 TOGWOTEE PASS 9580 21.7 28.1 77 27.9 29.6 94 TOWNSEND CREEK 8700 .0 7.8 0 12.5 16.2 77 ----- ----- Basin wide percent of average 41 79 BIGHORN BASIN BALD MTN. 9380 23.5 23.4 100 19.1 22.1 86 BEAR TRAP MEADOW 8200 .0 1.8 0 11.9 11.5 103 BONE SPRINGS DIV 9350 18.7 17.6 106 19.1 19.0 101 GRAVE SPRINGS 8550 1.5 10.1 15 13.7 13.8 99 KIRWIN 9550 5.3 12.6 42 16.0 14.8 108 MARQUETTE 8760 .0 -M * 12.5 14.4 87 MIDDLE POWDER 7760 3.8 13.3 29 13.7 16.4 84 OWL CREEK 8975 .0 3.5 0 5.8 8.7 67 POWDER RIVER PASS 9480 6.4 9.6 67 20.4 16.5 124 SHELL CREEK 9580 20.8 16.7 125 20.5 17.5 117 TIMBER CREEK 7950 .1 4.2 2 9.7 11.2 87 ----- ----- Basin wide percent of average 71 98 SHOSHONE RIVER BLACKWATER 9780 26.2 28.7 91 28.3 25.4 111 EVENING STAR 9200 30.1 33.2 91 37.8 30.6 124 MARQUETTE 8760 .0 -M * 12.5 14.4 87 SYLVAN ROAD 7120 .2 6.5 3 22.4 21.0 107 YOUNTS PEAK 8350 12.0 17.6 68 18.4 19.3 95 ----- ----- Basin wide percent of average 80 108 POWDER RIVER BEAR TRAP MEADOW 8200 .0 1.8 0 11.9 11.5 103 CLOUD PEAK RESERVOIR 9860 10.2 15.8 65 18.6 17.9 104 GRAVE SPRINGS 8550 1.5 10.1 15 13.7 13.8 99 HANSEN SAWMILL 8360 .2 4.1 5 11.0 11.5 96 MIDDLE POWDER 7760 3.8 13.3 29 13.7 16.4 84 POWDER RIVER PASS 9480 6.4 9.6 67 20.4 16.5 124 SOLDIER PARK 8720 .2 -M * 12.3 -M * ----- ----- Basin wide percent of average 40 102 TONGUE RIVER BIG GOOSE 7990 .7 10.8 6 16.7 13.6 123 BONE SPRINGS DIV 9350 18.7 17.6 106 19.1 19.0 101 BURGESS JUNCTION 7880 6.8 12.3 55 16.3 16.0 102 DOME LAKE 8880 8.9 12.4 72 19.7 17.5 113 LITTLE GOOSE 8870 .6 -M * 20.2 -M * SUCKER CREEK 8880 6.9 11.9 58 18.9 18.2 104 TIE CREEK 6870 .0 3.2 0 16.1 14.2 113 ----- ----- Basin wide percent of average 62 108 BELLE FOURCHE COLE CANYON 5910 .0 2.8 0 12.0 10.2 118 ----- ----- Basin wide percent of average 0 118 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 3.0 0 14.1 14.8 95 NORTH RAPID CREEK 6130 .0 2.1 0 11.2 11.9 94 ----- ----- Basin wide percent of average 0 95 UPPER N. PLATTE ARAPAHO RIDGE 10960 7.9 26.1 30 19.2 31.5 61 BLACKHALL MTN 9820 13.7 -M * 26.2 -M * COLUMBINE 9160 .0 18.6 0 22.3 29.8 75 DIVIDE PEAK 8880 -M 17.4 * 21.2 24.9 85 JOE WRIGHT 10120 -M 25.0 * 21.9 31.0 71 LAPRELE CREEK 8375 .0 5.9 0 13.3 17.1 78 NORTH FRENCH CREEK 10130 14.4 34.5 42 23.5 30.6 77 NEVER SUMMER 10280 8.3 23.8 35 13.0 29.4 44 OLD BATTLE 10000 22.5 37.3 60 30.7 40.7 75 RAWAH 9020 .0 15.2 0 13.5 20.4 66 SAGE CREEK BASIN 7850 -M 10.1 * 11.7 14.4 81 SAND LAKE 10050 21.8 37.0 59 26.8 30.3 88 SOUTH BRUSH CREEK 8440 .0 9.6 0 13.5 20.8 65 TOWER 10500 23.6 52.4 45 35.4 46.2 77 WEBBER SPRINGS 9250 -M 23.3 * 24.6 31.8 77 WILLOW CREEK PASS 9540 -M 13.7 * 10.9 16.2 67 ZIRKEL 9340 .0 19.2 0 -M 30.6 * ----- ----- Basin wide percent of average 35 73 SWEETWATER DEER PARK 9700 5.6 16.7 34 20.3 27.6 74 LARSEN CREEK 9000 .0 -M * 16.1 -M * SOUTH PASS 9040 4.0 16.9 24 14.8 23.4 63 ----- ----- Basin wide percent of average 29 69 LOWER N. PLATTE CASPER MTN. 7900 3.9 15.7 25 20.4 20.4 100 LAPRELE CREEK 8375 .0 5.9 0 13.3 17.1 78 RENO HILL 8400 2.9 13.3 22 20.9 21.1 99 WINDY PEAK 7900 .0 3.7 0 10.0 14.1 71 ----- ----- Basin wide percent of average 18 89 LARAMIE RIVER BROOKLYN LAKE 10240 5.6 27.2 21 21.7 27.8 78 CINNABAR PARK 9574 .8 14.8 5 21.7 24.3 89 CROW CREEK 8330 .0 3.7 0 11.8 12.7 93 DEADMAN HILL 10220 9.7 19.6 49 18.1 21.7 83 RAWAH 9020 .0 15.2 0 13.5 20.4 66 ROACH 9700 1.5 17.3 9 18.7 23.2 81 ----- ----- Basin wide percent of average 18 81 S. PLATTE BLACK MOUNTAIN 8920 .0 -M * 14.0 -M * CROW CREEK 8330 .0 3.7 0 11.8 12.7 93 DEADMAN HILL 10220 9.7 19.6 49 18.1 21.7 83 ----- ----- Basin wide percent of average 42 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 3.2 0 13.3 19.1 70 DIVIDE PEAK 8880 -M 17.4 * 21.2 24.9 85 ELK RIVER 8700 .0 12.5 0 17.1 23.6 72 LITTLE SNAKE RIVER 8915 .0 -M * 26.4 -M * OLD BATTLE 10000 22.5 37.3 60 30.7 40.7 75 SAGE CREEK BASIN 7850 -M 10.1 * 11.7 14.4 81 SANDSTONE RS 8150 .0 7.5 0 13.4 22.4 60 WHISKEY PARK 8950 -M 29.7 * 27.0 34.7 78 ----- ----- Basin wide percent of average 37 75 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.7 12.2 55 15.8 16.4 96 BLIND BULL SUM 8650 24.2 27.1 89 19.5 25.7 76 EAST RIM DIVIDE 7930 .0 12.1 0 12.9 14.2 91 ELKHART PARK G.S. 9400 10.5 11.8 89 17.2 16.5 104 GROS VENTRE SUMMIT 8750 .9 12.3 7 12.4 15.7 79 GUNSIGHT PASS 9820 10.6 -M * 17.4 -M * KENDALL R.S. 7740 .0 8.0 0 16.0 16.9 95 LOOMIS PARK 8240 .1 12.9 1 18.2 20.4 89 NEW FORK LAKE 8340 .2 7.0 3 12.4 13.8 90 POCKET CREEK 9360 6.4 -M * 14.1 -M * SNIDER BASIN 8060 .1 11.2 1 14.9 18.9 79 SPRING CREEK DIVIDE 9000 21.9 27.7 79 25.8 30.7 84 TRIPLE PEAK 8500 10.2 21.9 47 28.7 29.3 98 ----- ----- Basin wide percent of average 46 89 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 12.5 -M * BUCK PASTURE 9700 .1 -M * 5.9 -M * EF BLACKS FORK GS 9308 -M -M * 9.0 -M * HAMS FORK 7840 .0 4.3 0 11.6 15.2 76 HEWINTA 9519 .0 7.6 0 14.8 18.3 81 HICKERSON PARK 9145 .0 4.4 0 13.9 10.6 131 HOLE-IN-ROCK 9150 .0 3.6 0 14.0 10.2 137 INDIAN CREEK 9425 13.6 27.1 50 20.5 30.0 68 KELLEY R.S. 8180 4.5 12.5 36 18.0 24.0 75 SPIRIT LK 10223 .0 -M * 19.9 -M * STEEL CREEK PARK 10200 5.8 18.9 31 16.9 20.8 81 ----- ----- Basin wide percent of average 30 85 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 12.2 -M * BUG LAKE 7950 4.1 15.7 26 18.1 22.9 79 BURTS MILLER RANCH 8000 .3 -M * 10.5 -M * CHALK CREEK #1 8993 7.0 24.2 29 22.8 30.7 74 HAYDEN FORK 9212 .2 11.1 2 20.8 25.7 81 KELLEY R.S. 8180 4.5 12.5 36 18.0 24.0 75 LILY LAKE 9156 .0 9.5 0 14.7 21.6 68 MONTE CRISTO 8960 7.8 26.6 29 22.3 31.0 72 SALT RIVER SUMMIT 7760 .0 8.8 0 12.0 22.0 55 ----- ----- Basin wide percent of average 22 72 ----------------------------------------------------------------------------- -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.