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 WEDNESDAY: APRIL 25 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.6 14.3 60 25.7 23.8 108 BLACK BEAR 8170 41.2 40.6 101 46.9 44.9 104 BLIND BULL SUM 8650 23.5 28.5 82 18.1 24.7 73 COTTONWOOD CREEK 7670 12.9 21.6 60 26.2 31.1 84 EAST RIM DIVIDE 7930 .1 13.8 1 12.1 13.5 90 GRAND TARGHEE 9260 37.6 -M * 32.3 -M * GRANITE CREEK 6770 6.3 14.6 43 17.8 21.9 81 GRASSY LAKE 7265 27.8 35.3 79 41.6 40.0 104 GROS VENTRE SUMMIT 8750 3.6 14.1 26 11.7 14.8 79 GUNSIGHT PASS 9820 10.1 -M * 15.8 -M * LEWIS LAKE DIVIDE 7850 30.8 35.9 86 38.5 40.8 94 PHILLIPS BENCH 8200 20.8 30.4 68 27.3 32.4 84 SALT RIVER SUMMIT 7760 1.5 12.5 12 11.4 21.1 54 SNAKE RIVER STATION 6920 5.8 14.6 40 26.6 25.0 106 SPRING CREEK DIVIDE 9000 22.1 28.9 76 23.9 29.6 81 THUMB DIVIDE 7980 11.3 16.7 68 20.7 21.4 97 TOGWOTEE PASS 9580 21.1 27.6 76 25.9 28.1 92 TWO OCEAN PLATEAU 9240 36.1 31.6 114 30.7 31.2 98 WILLOW CREEK 8380 18.2 31.6 58 34.8 36.6 95 YOUNTS PEAK 8350 14.6 18.1 81 17.0 18.3 93 ----- ----- Basin wide percent of average 71 92 MADISON-GALLATIN BLACK BEAR 8170 41.2 40.6 101 46.9 44.9 104 CANYON 7870 11.1 12.3 90 17.1 17.3 99 MADISON PLATEAU 7750 27.0 25.3 107 35.0 29.8 117 WEST YELLOWSTONE 6700 .0 8.1 0 19.4 14.6 133 WHISKEY CREEK 6800 14.5 16.5 88 26.5 23.6 112 ----- ----- Basin wide percent of average 91 111 YELLOWSTONE BEARTOOTH LAKE 9360 25.3 25.7 98 27.2 22.8 119 BURNT MTN 5880 .0 2.4 0 14.0 19.1 73 CANYON 7870 11.1 12.3 90 17.1 17.3 99 COLE CREEK 7850 13.7 18.9 72 14.4 20.7 70 EVENING STAR 9200 30.3 32.7 93 35.8 29.0 123 FISHER CREEK 9100 38.9 37.7 103 39.6 40.9 97 NORTHEAST ENTRANCE 7350 .8 8.4 10 15.3 14.4 106 PARKER PEAK 9400 24.8 24.2 102 25.9 18.8 138 SYLVAN LAKE 8420 16.7 23.9 70 27.8 24.0 116 THUMB DIVIDE 7980 11.3 16.7 68 20.7 21.4 97 TWO OCEAN PLATEAU 9240 36.1 31.6 114 30.7 31.2 98 WHITE MILL 8700 25.8 26.3 98 27.7 30.4 91 WOLVERINE 7650 .0 8.5 0 14.2 14.7 97 ----- ----- Basin wide percent of average 87 102 WIND RIVER BURROUGHS CREEK 8750 12.1 14.4 84 15.0 18.7 80 CASTLE CREEK 8400 .0 -M * 9.0 -M * COLD SPRINGS 9630 .0 5.1 0 9.9 13.2 75 DEER PARK 9700 8.8 19.5 45 19.4 25.9 75 HOBBS PARK 10100 10.6 17.6 60 14.5 16.0 91 KIRWIN 9550 9.0 12.7 71 15.2 13.6 112 LITTLE WARM 9370 2.9 11.8 25 12.7 16.1 79 OWL CREEK 8975 .0 4.1 0 6.1 7.7 79 SOUTH PASS 9040 9.6 18.1 53 14.7 21.8 67 ST. LAWRENCE ALT 8620 .0 6.4 0 8.3 11.3 73 TOGWOTEE PASS 9580 21.1 27.6 76 25.9 28.1 92 TOWNSEND CREEK 8700 .0 9.6 0 12.5 14.7 85 ----- ----- Basin wide percent of average 50 82 BIGHORN BASIN BALD MTN. 9380 21.7 22.9 95 17.3 20.5 84 BEAR TRAP MEADOW 8200 .0 3.0 0 10.8 10.3 105 BONE SPRINGS DIV 9350 19.5 17.9 109 18.0 17.5 103 GRAVE SPRINGS 8550 4.7 10.9 43 12.1 12.5 97 KIRWIN 9550 9.0 12.7 71 15.2 13.6 112 MARQUETTE 8760 1.7 -M * 13.1 12.8 102 MIDDLE POWDER 7760 7.0 14.2 49 12.7 15.0 85 OWL CREEK 8975 .0 4.1 0 6.1 7.7 79 POWDER RIVER PASS 9480 6.9 11.2 62 17.4 15.0 116 SHELL CREEK 9580 18.8 16.5 114 18.1 16.0 113 TIMBER CREEK 7950 .0 5.0 0 9.6 9.7 99 ----- ----- Basin wide percent of average 74 100 SHOSHONE RIVER BLACKWATER 9780 25.8 27.9 92 27.0 23.9 113 EVENING STAR 9200 30.3 32.7 93 35.8 29.0 123 MARQUETTE 8760 1.7 -M * 13.1 12.8 102 SYLVAN ROAD 7120 .0 9.6 0 20.1 19.9 101 YOUNTS PEAK 8350 14.6 18.1 81 17.0 18.3 93 ----- ----- Basin wide percent of average 80 109 POWDER RIVER BEAR TRAP MEADOW 8200 .0 3.0 0 10.8 10.3 105 CLOUD PEAK RESERVOIR 9860 12.9 15.9 81 17.6 16.2 109 GRAVE SPRINGS 8550 4.7 10.9 43 12.1 12.5 97 HANSEN SAWMILL 8360 .0 5.1 0 9.9 10.3 96 MIDDLE POWDER 7760 7.0 14.2 49 12.7 15.0 85 POWDER RIVER PASS 9480 6.9 11.2 62 17.4 15.0 116 SOLDIER PARK 8720 1.8 -M * 11.7 -M * ----- ----- Basin wide percent of average 52 102 TONGUE RIVER BIG GOOSE 7990 5.5 12.3 45 16.5 12.1 136 BONE SPRINGS DIV 9350 19.5 17.9 109 18.0 17.5 103 BURGESS JUNCTION 7880 10.0 13.2 76 15.6 14.7 106 DOME LAKE 8880 11.5 13.5 85 17.4 16.0 109 LITTLE GOOSE 8870 4.4 -M * 19.1 -M * SUCKER CREEK 8880 9.1 13.3 68 17.3 16.5 105 TIE CREEK 6870 .0 5.0 0 15.3 12.7 120 ----- ----- Basin wide percent of average 74 112 BELLE FOURCHE COLE CANYON 5910 .0 6.1 0 9.5 8.7 109 ----- ----- Basin wide percent of average 0 109 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 5.5 0 11.3 13.5 84 NORTH RAPID CREEK 6130 .0 6.4 0 9.8 10.6 92 ----- ----- Basin wide percent of average 0 88 UPPER N. PLATTE ARAPAHO RIDGE 10960 12.7 25.8 49 18.3 30.2 61 BLACKHALL MTN 9820 19.0 -M * 25.4 -M * COLUMBINE 9160 -M 22.9 * 21.3 28.4 75 DIVIDE PEAK 8880 -M 20.5 * 20.3 23.6 86 JOE WRIGHT 10120 10.5 24.7 43 21.0 29.0 72 LAPRELE CREEK 8375 .0 8.5 0 13.2 15.6 85 NORTH FRENCH CREEK 10130 15.8 34.1 46 21.7 28.6 76 NEVER SUMMER 10280 11.1 23.5 47 12.4 27.5 45 OLD BATTLE 10000 23.5 36.1 65 29.5 38.8 76 RAWAH 9020 .0 16.4 0 12.9 19.0 68 SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.7 82 SAND LAKE 10050 23.7 36.4 65 25.7 28.2 91 SOUTH BRUSH CREEK 8440 .0 12.3 0 12.7 19.3 66 TOWER 10500 27.3 51.5 53 34.0 43.9 77 WEBBER SPRINGS 9250 8.2 25.9 32 23.4 30.3 77 WILLOW CREEK PASS 9540 -M 14.2 * 10.5 15.1 70 ZIRKEL 9340 -M 23.6 * -M 29.3 * ----- ----- Basin wide percent of average 45 74 SWEETWATER DEER PARK 9700 8.8 19.5 45 19.4 25.9 75 LARSEN CREEK 9000 .4 -M * 15.4 -M * SOUTH PASS 9040 9.6 18.1 53 14.7 21.8 67 ----- ----- Basin wide percent of average 49 71 LOWER N. PLATTE CASPER MTN. 7900 11.2 17.6 64 19.5 18.5 105 LAPRELE CREEK 8375 .0 8.5 0 13.2 15.6 85 RENO HILL 8400 10.5 15.7 67 20.3 19.1 106 WINDY PEAK 7900 .0 6.3 0 9.7 12.8 76 ----- ----- Basin wide percent of average 45 95 LARAMIE RIVER BROOKLYN LAKE 10240 11.8 28.1 42 20.9 26.0 80 CINNABAR PARK 9574 7.6 16.9 45 21.1 22.7 93 CROW CREEK 8330 .1 8.0 1 11.1 11.8 94 DEADMAN HILL 10220 15.6 19.3 81 17.5 20.1 87 RAWAH 9020 .0 16.4 0 12.9 19.0 68 ROACH 9700 8.7 18.6 47 18.1 21.6 84 ----- ----- Basin wide percent of average 41 84 S. PLATTE BLACK MOUNTAIN 8920 1.6 -M * 13.5 -M * CROW CREEK 8330 .1 8.0 1 11.1 11.8 94 DEADMAN HILL 10220 15.6 19.3 81 17.5 20.1 87 ----- ----- Basin wide percent of average 58 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 6.2 0 12.9 18.0 72 DIVIDE PEAK 8880 -M 20.5 * 20.3 23.6 86 ELK RIVER 8700 -M 17.3 * 16.6 22.4 74 LITTLE SNAKE RIVER 8915 5.8 -M * 26.0 -M * OLD BATTLE 10000 23.5 36.1 65 29.5 38.8 76 SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.7 82 SANDSTONE RS 8150 -M 11.4 * 13.4 21.2 63 WHISKEY PARK 8950 11.7 30.7 38 26.0 32.7 80 ----- ----- Basin wide percent of average 48* 76 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 14.6 73 15.1 15.4 98 BLIND BULL SUM 8650 23.5 28.5 82 18.1 24.7 73 EAST RIM DIVIDE 7930 .1 13.8 1 12.1 13.5 90 ELKHART PARK G.S. 9400 11.6 13.6 85 16.3 15.4 106 GROS VENTRE SUMMIT 8750 3.6 14.1 26 11.7 14.8 79 GUNSIGHT PASS 9820 10.1 -M * 15.8 -M * KENDALL R.S. 7740 4.0 11.8 34 15.1 16.1 94 LOOMIS PARK 8240 3.7 15.7 24 17.4 19.4 90 NEW FORK LAKE 8340 1.8 9.9 18 11.8 12.9 91 POCKET CREEK 9360 8.9 -M * 13.6 -M * SNIDER BASIN 8060 4.2 13.9 30 13.6 18.1 75 SPRING CREEK DIVIDE 9000 22.1 28.9 76 23.9 29.6 81 TRIPLE PEAK 8500 11.5 25.1 46 26.6 27.9 95 ----- ----- Basin wide percent of average 51 87 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 12.1 -M * BUCK PASTURE 9700 .1 -M * 5.1 -M * EF BLACKS FORK GS 9308 -M -M * 10.7 -M * HAMS FORK 7840 .1 7.7 1 10.7 14.2 75 HEWINTA 9519 .0 10.8 0 14.2 17.2 83 HICKERSON PARK 9145 .0 7.0 0 13.9 9.7 143 HOLE-IN-ROCK 9150 .2 5.9 3 14.0 9.3 151 INDIAN CREEK 9425 14.5 29.3 49 19.5 28.8 68 KELLEY R.S. 8180 7.3 15.6 47 16.6 23.0 72 SPIRIT LK 10223 5.3 -M * 19.8 -M * STEEL CREEK PARK 10200 -M 18.2 * 16.3 19.6 83 ----- ----- Basin wide percent of average 29 86 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 11.2 -M * BUG LAKE 7950 9.2 20.0 46 17.0 21.8 78 BURTS MILLER RANCH 8000 .3 -M * 9.8 -M * CHALK CREEK #1 8993 10.8 25.9 42 20.9 29.2 72 HAYDEN FORK 9212 .2 14.8 1 19.6 24.4 80 KELLEY R.S. 8180 7.3 15.6 47 16.6 23.0 72 LILY LAKE 9156 .1 12.8 1 13.6 20.5 66 MONTE CRISTO 8960 11.7 29.6 40 21.4 29.3 73 SALT RIVER SUMMIT 7760 1.5 12.5 12 11.4 21.1 54 ----- ----- Basin wide percent of average 31 71 ----------------------------------------------------------------------------- -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.