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: APRIL 24 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.4 14.6 64 25.7 23.8 108 BLACK BEAR 8170 41.4 40.6 102 46.5 44.8 104 BLIND BULL SUM 8650 23.8 28.6 83 18.2 24.6 74 COTTONWOOD CREEK 7670 13.9 21.9 63 26.2 30.9 85 EAST RIM DIVIDE 7930 .1 13.9 1 12.1 13.4 90 GRAND TARGHEE 9260 38.0 -M * 32.3 -M * GRANITE CREEK 6770 -M 14.9 * -M 21.8 * GRASSY LAKE 7265 28.9 35.6 81 41.7 39.9 105 GROS VENTRE SUMMIT 8750 4.3 14.2 30 11.7 14.7 80 GUNSIGHT PASS 9820 10.7 -M * 15.8 -M * LEWIS LAKE DIVIDE 7850 31.7 36.0 88 38.5 40.7 95 PHILLIPS BENCH 8200 21.6 30.5 71 27.3 32.2 85 SALT RIVER SUMMIT 7760 2.8 12.7 22 11.5 21.0 55 SNAKE RIVER STATION 6920 6.9 14.9 46 26.5 24.9 106 SPRING CREEK DIVIDE 9000 22.8 28.9 79 23.9 29.5 81 THUMB DIVIDE 7980 12.4 16.9 73 20.7 21.3 97 TOGWOTEE PASS 9580 21.4 27.5 78 25.8 28.0 92 TWO OCEAN PLATEAU 9240 36.1 31.5 115 30.6 31.1 98 WILLOW CREEK 8380 19.0 31.7 60 34.8 36.4 96 YOUNTS PEAK 8350 15.1 18.1 83 16.9 18.2 93 ----- ----- Basin wide percent of average 75 92 MADISON-GALLATIN BLACK BEAR 8170 41.4 40.6 102 46.5 44.8 104 CANYON 7870 10.8 12.5 86 17.1 17.2 99 MADISON PLATEAU 7750 28.0 25.4 110 34.8 29.8 117 WEST YELLOWSTONE 6700 .0 8.3 0 19.2 14.5 132 WHISKEY CREEK 6800 14.9 16.7 89 26.5 23.5 113 ----- ----- Basin wide percent of average 92 111 YELLOWSTONE BEARTOOTH LAKE 9360 25.9 25.6 101 27.0 22.7 119 BURNT MTN 5880 .0 2.6 0 14.0 19.0 74 CANYON 7870 10.8 12.5 86 17.1 17.2 99 COLE CREEK 7850 14.6 18.9 77 14.3 20.5 70 EVENING STAR 9200 31.0 32.5 95 35.8 28.9 124 FISHER CREEK 9100 38.6 37.6 103 39.3 40.7 97 NORTHEAST ENTRANCE 7350 1.6 8.7 18 15.3 14.3 107 PARKER PEAK 9400 25.9 24.0 108 25.8 18.7 138 SYLVAN LAKE 8420 17.0 23.9 71 27.5 23.8 116 THUMB DIVIDE 7980 12.4 16.9 73 20.7 21.3 97 TWO OCEAN PLATEAU 9240 36.1 31.5 115 30.6 31.1 98 WHITE MILL 8700 25.7 26.3 98 27.5 30.2 91 WOLVERINE 7650 .0 8.8 0 14.2 14.6 97 ----- ----- Basin wide percent of average 89 102 WIND RIVER BURROUGHS CREEK 8750 12.7 14.5 88 15.0 18.6 81 CASTLE CREEK 8400 .0 -M * 9.0 -M * COLD SPRINGS 9630 .0 5.2 0 9.9 13.1 76 DEER PARK 9700 9.4 19.2 49 19.4 25.7 75 HOBBS PARK 10100 11.4 17.5 65 14.5 15.9 91 KIRWIN 9550 9.6 12.6 76 15.2 13.4 113 LITTLE WARM 9370 3.8 11.8 32 12.6 15.9 79 OWL CREEK 8975 .0 4.2 0 6.1 7.6 80 SOUTH PASS 9040 10.5 17.8 59 14.7 21.6 68 ST. LAWRENCE ALT 8620 .0 6.4 0 8.3 11.2 74 TOGWOTEE PASS 9580 21.4 27.5 78 25.8 28.0 92 TOWNSEND CREEK 8700 .0 9.6 0 12.7 14.6 87 ----- ----- Basin wide percent of average 54 83 BIGHORN BASIN BALD MTN. 9380 22.1 22.8 97 17.3 20.3 85 BEAR TRAP MEADOW 8200 .0 3.2 0 10.8 10.2 106 BONE SPRINGS DIV 9350 20.2 17.8 113 18.0 17.4 103 GRAVE SPRINGS 8550 5.6 11.0 51 12.1 12.4 98 KIRWIN 9550 9.6 12.6 76 15.2 13.4 113 MARQUETTE 8760 2.8 -M * 13.1 12.7 103 MIDDLE POWDER 7760 8.1 14.2 57 12.7 14.9 85 OWL CREEK 8975 .0 4.2 0 6.1 7.6 80 POWDER RIVER PASS 9480 7.6 11.4 67 17.4 14.9 117 SHELL CREEK 9580 19.2 16.4 117 18.0 15.9 113 TIMBER CREEK 7950 .0 5.0 0 9.6 9.6 100 ----- ----- Basin wide percent of average 78 101 SHOSHONE RIVER BLACKWATER 9780 26.3 27.6 95 27.0 23.8 113 EVENING STAR 9200 31.0 32.5 95 35.8 28.9 124 MARQUETTE 8760 2.8 -M * 13.1 12.7 103 SYLVAN ROAD 7120 .0 9.7 0 20.0 19.8 101 YOUNTS PEAK 8350 15.1 18.1 83 16.9 18.2 93 ----- ----- Basin wide percent of average 82 109 POWDER RIVER BEAR TRAP MEADOW 8200 .0 3.2 0 10.8 10.2 106 CLOUD PEAK RESERVOIR 9860 13.4 15.9 84 17.6 16.0 110 GRAVE SPRINGS 8550 5.6 11.0 51 12.1 12.4 98 HANSEN SAWMILL 8360 .0 5.2 0 9.9 10.2 97 MIDDLE POWDER 7760 8.1 14.2 57 12.7 14.9 85 POWDER RIVER PASS 9480 7.6 11.4 67 17.4 14.9 117 SOLDIER PARK 8720 3.1 -M * 11.7 -M * ----- ----- Basin wide percent of average 57 102 TONGUE RIVER BIG GOOSE 7990 6.7 12.4 54 16.5 12.0 138 BONE SPRINGS DIV 9350 20.2 17.8 113 18.0 17.4 103 BURGESS JUNCTION 7880 10.9 13.2 83 15.6 14.6 107 DOME LAKE 8880 12.3 13.5 91 17.2 15.9 108 LITTLE GOOSE 8870 5.7 -M * 19.1 -M * SUCKER CREEK 8880 10.1 13.3 76 17.3 16.4 105 TIE CREEK 6870 .0 5.2 0 15.2 12.5 122 ----- ----- Basin wide percent of average 80 112 BELLE FOURCHE COLE CANYON 5910 .0 6.3 0 9.5 8.6 110 ----- ----- Basin wide percent of average 0 110 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 5.9 0 11.3 13.3 85 NORTH RAPID CREEK 6130 .0 6.8 0 9.8 10.5 93 ----- ----- Basin wide percent of average 0 89 UPPER N. PLATTE ARAPAHO RIDGE 10960 13.3 25.7 52 18.3 30.0 61 BLACKHALL MTN 9820 19.6 -M * 25.4 -M * COLUMBINE 9160 -M 23.1 * 21.3 28.3 75 DIVIDE PEAK 8880 -M 20.6 * 20.4 23.4 87 JOE WRIGHT 10120 10.6 24.7 43 20.9 28.8 73 LAPRELE CREEK 8375 .0 8.7 0 13.2 15.4 86 NORTH FRENCH CREEK 10130 16.0 34.0 47 21.8 28.4 77 NEVER SUMMER 10280 11.6 23.5 49 12.4 27.4 45 OLD BATTLE 10000 24.2 36.0 67 29.5 38.7 76 RAWAH 9020 .0 16.4 0 12.9 18.9 68 SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.6 82 SAND LAKE 10050 24.0 36.3 66 25.7 28.1 91 SOUTH BRUSH CREEK 8440 -M 12.4 * 12.7 19.2 66 TOWER 10500 28.0 51.4 54 34.0 43.6 78 WEBBER SPRINGS 9250 9.0 26.0 35 23.4 30.2 77 WILLOW CREEK PASS 9540 -M 14.2 * 10.5 15.0 70 ZIRKEL 9340 -M 23.8 * -M 29.2 * ----- ----- Basin wide percent of average 48 74 SWEETWATER DEER PARK 9700 9.4 19.2 49 19.4 25.7 75 LARSEN CREEK 9000 1.2 -M * 15.4 -M * SOUTH PASS 9040 10.5 17.8 59 14.7 21.6 68 ----- ----- Basin wide percent of average 54 72 LOWER N. PLATTE CASPER MTN. 7900 12.5 17.6 71 19.5 18.3 107 LAPRELE CREEK 8375 .0 8.7 0 13.2 15.4 86 RENO HILL 8400 11.4 15.8 72 20.3 18.9 107 WINDY PEAK 7900 .0 6.5 0 9.7 12.7 76 ----- ----- Basin wide percent of average 49 96 LARAMIE RIVER BROOKLYN LAKE 10240 12.5 27.9 45 20.9 25.8 81 CINNABAR PARK 9574 8.1 17.1 47 21.1 22.6 93 CROW CREEK 8330 .1 8.5 1 11.2 11.7 96 DEADMAN HILL 10220 16.1 19.3 83 17.5 20.0 88 RAWAH 9020 .0 16.4 0 12.9 18.9 68 ROACH 9700 9.2 18.6 49 18.1 21.5 84 ----- ----- Basin wide percent of average 43 84 S. PLATTE BLACK MOUNTAIN 8920 2.4 -M * 13.5 -M * CROW CREEK 8330 .1 8.5 1 11.2 11.7 96 DEADMAN HILL 10220 16.1 19.3 83 17.5 20.0 88 ----- ----- Basin wide percent of average 58 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 6.5 0 12.9 18.0 72 DIVIDE PEAK 8880 -M 20.6 * 20.4 23.4 87 ELK RIVER 8700 -M 17.7 * 16.6 22.2 75 LITTLE SNAKE RIVER 8915 6.9 -M * 26.2 -M * OLD BATTLE 10000 24.2 36.0 67 29.5 38.7 76 SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.6 82 SANDSTONE RS 8150 -M 11.6 * 13.5 21.1 64 WHISKEY PARK 8950 11.6 30.7 38 26.0 32.6 80 ----- ----- Basin wide percent of average 49* 77 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.6 14.7 79 15.1 15.3 99 BLIND BULL SUM 8650 23.8 28.6 83 18.2 24.6 74 EAST RIM DIVIDE 7930 .1 13.9 1 12.1 13.4 90 ELKHART PARK G.S. 9400 12.3 13.7 90 16.3 15.3 107 GROS VENTRE SUMMIT 8750 4.3 14.2 30 11.7 14.7 80 GUNSIGHT PASS 9820 10.7 -M * 15.8 -M * KENDALL R.S. 7740 4.9 12.0 41 15.2 16.1 94 LOOMIS PARK 8240 4.7 15.8 30 17.4 19.3 90 NEW FORK LAKE 8340 3.0 10.1 30 11.7 12.9 91 POCKET CREEK 9360 9.5 -M * 13.5 -M * SNIDER BASIN 8060 5.1 14.1 36 13.5 18.1 75 SPRING CREEK DIVIDE 9000 22.8 28.9 79 23.9 29.5 81 TRIPLE PEAK 8500 12.5 25.3 49 26.5 27.8 95 ----- ----- Basin wide percent of average 55 88 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 12.1 -M * BUCK PASTURE 9700 .1 -M * 5.2 -M * EF BLACKS FORK GS 9308 -M -M * 10.6 -M * HAMS FORK 7840 .1 7.9 1 10.7 14.1 76 HEWINTA 9519 .0 11.0 0 14.2 17.1 83 HICKERSON PARK 9145 .0 7.2 0 14.0 9.6 146 HOLE-IN-ROCK 9150 .2 6.1 3 13.9 9.2 151 INDIAN CREEK 9425 15.6 29.4 53 19.5 28.6 68 KELLEY R.S. 8180 8.3 15.9 52 16.5 22.9 72 SPIRIT LK 10223 6.5 -M * 19.8 -M * STEEL CREEK PARK 10200 -M 18.1 * 16.3 19.4 84 ----- ----- Basin wide percent of average 31 87 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 11.2 -M * BUG LAKE 7950 10.1 20.3 50 17.1 21.7 79 BURTS MILLER RANCH 8000 .3 -M * 9.9 -M * CHALK CREEK #1 8993 11.8 26.0 45 21.0 29.0 72 HAYDEN FORK 9212 .4 15.0 3 19.6 24.2 81 KELLEY R.S. 8180 8.3 15.9 52 16.5 22.9 72 LILY LAKE 9156 1.3 13.0 10 13.6 20.4 67 MONTE CRISTO 8960 12.9 29.8 43 21.3 29.2 73 SALT RIVER SUMMIT 7760 2.8 12.7 22 11.5 21.0 55 ----- ----- Basin wide percent of average 36 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.