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 MONDAY: APRIL 23 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.3 14.9 69 25.7 23.7 108 BLACK BEAR 8170 42.2 40.6 104 46.5 44.6 104 BLIND BULL SUM 8650 24.2 28.6 85 18.1 24.5 74 COTTONWOOD CREEK 7670 14.7 22.2 66 26.2 30.8 85 EAST RIM DIVIDE 7930 .1 13.9 1 12.1 13.4 90 GRAND TARGHEE 9260 39.2 -M * 32.3 -M * GRANITE CREEK 6770 -M 15.2 * -M 21.7 * GRASSY LAKE 7265 29.9 35.8 84 41.5 39.7 105 GROS VENTRE SUMMIT 8750 5.3 14.2 37 11.7 14.6 80 GUNSIGHT PASS 9820 11.3 -M * 15.8 -M * LEWIS LAKE DIVIDE 7850 32.3 36.2 89 38.5 40.5 95 PHILLIPS BENCH 8200 22.4 30.5 73 27.3 32.1 85 SALT RIVER SUMMIT 7760 4.0 13.0 31 11.6 20.9 56 SNAKE RIVER STATION 6920 8.5 15.2 56 26.6 24.8 107 SPRING CREEK DIVIDE 9000 23.2 28.9 80 23.9 29.3 82 THUMB DIVIDE 7980 13.3 17.2 77 20.5 21.2 97 TOGWOTEE PASS 9580 22.0 27.4 80 25.8 27.9 92 TWO OCEAN PLATEAU 9240 36.3 31.4 116 30.6 31.0 99 WILLOW CREEK 8380 20.0 31.8 63 34.8 36.2 96 YOUNTS PEAK 8350 15.6 18.2 86 16.9 18.1 93 ----- ----- Basin wide percent of average 77 93 MADISON-GALLATIN BLACK BEAR 8170 42.2 40.6 104 46.5 44.6 104 CANYON 7870 10.6 12.6 84 17.1 17.1 100 MADISON PLATEAU 7750 28.1 25.5 110 34.8 29.7 117 WEST YELLOWSTONE 6700 .3 8.6 3 19.2 14.5 132 WHISKEY CREEK 6800 15.4 16.9 91 26.5 23.4 113 ----- ----- Basin wide percent of average 93 111 YELLOWSTONE BEARTOOTH LAKE 9360 26.8 25.6 105 26.9 22.6 119 BURNT MTN 5880 .0 3.0 0 14.0 18.8 74 CANYON 7870 10.6 12.6 84 17.1 17.1 100 COLE CREEK 7850 15.3 18.8 81 14.2 20.4 70 EVENING STAR 9200 31.4 32.4 97 35.8 28.8 124 FISHER CREEK 9100 38.7 37.6 103 39.1 40.5 97 NORTHEAST ENTRANCE 7350 2.7 9.0 30 15.3 14.2 108 PARKER PEAK 9400 26.6 24.0 111 25.7 18.6 138 SYLVAN LAKE 8420 16.9 24.0 70 27.5 23.7 116 THUMB DIVIDE 7980 13.3 17.2 77 20.5 21.2 97 TWO OCEAN PLATEAU 9240 36.3 31.4 116 30.6 31.0 99 WHITE MILL 8700 25.8 26.2 98 27.3 30.1 91 WOLVERINE 7650 .0 9.1 0 14.3 14.5 99 ----- ----- Basin wide percent of average 90 102 WIND RIVER BURROUGHS CREEK 8750 13.2 14.6 90 14.9 18.5 81 CASTLE CREEK 8400 .0 -M * 9.0 -M * COLD SPRINGS 9630 .0 5.4 0 9.8 13.0 75 DEER PARK 9700 9.9 18.6 53 19.4 25.5 76 HOBBS PARK 10100 12.3 17.3 71 14.5 15.8 92 KIRWIN 9550 10.3 12.7 81 15.2 13.3 114 LITTLE WARM 9370 4.8 11.9 40 12.5 15.8 79 OWL CREEK 8975 .0 4.3 0 5.9 7.5 79 SOUTH PASS 9040 11.3 17.8 63 14.7 21.5 68 ST. LAWRENCE ALT 8620 .1 6.5 2 8.3 11.1 75 TOGWOTEE PASS 9580 22.0 27.4 80 25.8 27.9 92 TOWNSEND CREEK 8700 1.1 9.5 12 12.7 14.4 88 ----- ----- Basin wide percent of average 58 83 BIGHORN BASIN BALD MTN. 9380 22.4 22.7 99 17.3 20.2 86 BEAR TRAP MEADOW 8200 .0 3.4 0 10.7 10.1 106 BONE SPRINGS DIV 9350 20.9 17.7 118 17.9 17.2 104 GRAVE SPRINGS 8550 6.1 11.0 55 12.1 12.3 98 KIRWIN 9550 10.3 12.7 81 15.2 13.3 114 MARQUETTE 8760 4.9 -M * 12.9 12.5 103 MIDDLE POWDER 7760 9.0 14.3 63 12.6 14.8 85 OWL CREEK 8975 .0 4.3 0 5.9 7.5 79 POWDER RIVER PASS 9480 8.4 11.5 73 17.4 14.8 118 SHELL CREEK 9580 19.7 16.4 120 18.0 15.8 114 TIMBER CREEK 7950 .1 5.1 2 9.6 9.4 102 ----- ----- Basin wide percent of average 81 101 SHOSHONE RIVER BLACKWATER 9780 26.8 27.5 97 27.0 23.7 114 EVENING STAR 9200 31.4 32.4 97 35.8 28.8 124 MARQUETTE 8760 4.9 -M * 12.9 12.5 103 SYLVAN ROAD 7120 .1 10.0 1 20.0 19.7 102 YOUNTS PEAK 8350 15.6 18.2 86 16.9 18.1 93 ----- ----- Basin wide percent of average 84 110 POWDER RIVER BEAR TRAP MEADOW 8200 .0 3.4 0 10.7 10.1 106 CLOUD PEAK RESERVOIR 9860 13.9 15.9 87 17.5 15.8 111 GRAVE SPRINGS 8550 6.1 11.0 55 12.1 12.3 98 HANSEN SAWMILL 8360 .0 5.3 0 9.9 10.1 98 MIDDLE POWDER 7760 9.0 14.3 63 12.6 14.8 85 POWDER RIVER PASS 9480 8.4 11.5 73 17.4 14.8 118 SOLDIER PARK 8720 4.4 -M * 11.7 -M * ----- ----- Basin wide percent of average 61 103 TONGUE RIVER BIG GOOSE 7990 7.4 12.4 60 16.5 11.8 140 BONE SPRINGS DIV 9350 20.9 17.7 118 17.9 17.2 104 BURGESS JUNCTION 7880 11.8 13.2 89 15.5 14.5 107 DOME LAKE 8880 13.0 13.6 96 17.1 15.7 109 LITTLE GOOSE 8870 6.7 -M * 18.8 -M * SUCKER CREEK 8880 10.8 13.4 81 17.3 16.2 107 TIE CREEK 6870 .1 5.3 2 15.2 12.4 123 ----- ----- Basin wide percent of average 85 113 BELLE FOURCHE COLE CANYON 5910 .0 6.4 0 9.4 8.4 112 ----- ----- Basin wide percent of average 0 112 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 6.2 0 11.4 13.2 86 NORTH RAPID CREEK 6130 .0 7.2 0 9.8 10.4 94 ----- ----- Basin wide percent of average 0 90 UPPER N. PLATTE ARAPAHO RIDGE 10960 13.5 25.6 53 18.4 29.9 62 BLACKHALL MTN 9820 20.1 -M * 25.4 -M * COLUMBINE 9160 -M 23.4 * 21.3 28.2 76 DIVIDE PEAK 8880 -M 20.7 * 20.3 23.3 87 JOE WRIGHT 10120 10.9 24.6 44 21.0 28.6 73 LAPRELE CREEK 8375 .0 8.9 0 13.2 15.3 86 NORTH FRENCH CREEK 10130 16.5 33.8 49 21.8 28.2 77 NEVER SUMMER 10280 11.5 23.4 49 12.4 27.2 46 OLD BATTLE 10000 24.4 35.8 68 29.5 38.5 77 RAWAH 9020 .0 16.3 0 12.8 18.8 68 SAGE CREEK BASIN 7850 -M 12.0 * 11.2 13.5 83 SAND LAKE 10050 24.3 36.2 67 25.7 27.9 92 SOUTH BRUSH CREEK 8440 -M 12.6 * 12.7 19.1 66 TOWER 10500 28.4 51.2 55 34.0 43.4 78 WEBBER SPRINGS 9250 10.3 26.0 40 23.4 30.0 78 WILLOW CREEK PASS 9540 -M 14.2 * 10.5 14.9 70 ZIRKEL 9340 -M 24.1 * -M 29.0 * ----- ----- Basin wide percent of average 50 75 SWEETWATER DEER PARK 9700 9.9 18.6 53 19.4 25.5 76 LARSEN CREEK 9000 2.8 -M * 15.4 -M * SOUTH PASS 9040 11.3 17.8 63 14.7 21.5 68 ----- ----- Basin wide percent of average 58 73 LOWER N. PLATTE CASPER MTN. 7900 13.0 17.5 74 19.5 18.1 108 LAPRELE CREEK 8375 .0 8.9 0 13.2 15.3 86 RENO HILL 8400 12.2 15.9 77 20.3 18.7 109 WINDY PEAK 7900 .0 6.7 0 9.7 12.6 77 ----- ----- Basin wide percent of average 51 97 LARAMIE RIVER BROOKLYN LAKE 10240 13.0 27.8 47 20.9 25.7 81 CINNABAR PARK 9574 8.8 17.2 51 21.2 22.5 94 CROW CREEK 8330 .1 8.8 1 11.2 11.6 97 DEADMAN HILL 10220 16.6 19.2 86 17.5 19.8 88 RAWAH 9020 .0 16.3 0 12.8 18.8 68 ROACH 9700 10.0 18.5 54 18.1 21.4 85 ----- ----- Basin wide percent of average 45 85 S. PLATTE BLACK MOUNTAIN 8920 3.2 -M * 13.5 -M * CROW CREEK 8330 .1 8.8 1 11.2 11.6 97 DEADMAN HILL 10220 16.6 19.2 86 17.5 19.8 88 ----- ----- Basin wide percent of average 60 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 6.7 0 12.9 17.9 72 DIVIDE PEAK 8880 -M 20.7 * 20.3 23.3 87 ELK RIVER 8700 -M 18.0 * 16.6 22.1 75 LITTLE SNAKE RIVER 8915 8.2 -M * 26.2 -M * OLD BATTLE 10000 24.4 35.8 68 29.5 38.5 77 SAGE CREEK BASIN 7850 -M 12.0 * 11.2 13.5 83 SANDSTONE RS 8150 -M 11.9 * 13.4 21.0 64 WHISKEY PARK 8950 13.0 30.7 42 26.0 32.4 80 ----- ----- Basin wide percent of average 51* 77 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.4 14.8 84 15.1 15.2 99 BLIND BULL SUM 8650 24.2 28.6 85 18.1 24.5 74 EAST RIM DIVIDE 7930 .1 13.9 1 12.1 13.4 90 ELKHART PARK G.S. 9400 13.0 13.8 94 16.3 15.2 107 GROS VENTRE SUMMIT 8750 5.3 14.2 37 11.7 14.6 80 GUNSIGHT PASS 9820 11.3 -M * 15.8 -M * KENDALL R.S. 7740 5.7 12.2 47 15.2 16.0 95 LOOMIS PARK 8240 5.4 16.0 34 17.4 19.3 90 NEW FORK LAKE 8340 3.9 10.3 38 11.6 12.8 91 POCKET CREEK 9360 10.0 -M * 13.5 -M * SNIDER BASIN 8060 6.3 14.2 44 13.5 18.0 75 SPRING CREEK DIVIDE 9000 23.2 28.9 80 23.9 29.3 82 TRIPLE PEAK 8500 13.5 25.4 53 26.4 27.7 95 ----- ----- Basin wide percent of average 59 88 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 12.2 -M * BUCK PASTURE 9700 .0 -M * .0 -M * EF BLACKS FORK GS 9308 -M -M * 10.6 -M * HAMS FORK 7840 .1 8.2 1 10.8 14.0 77 HEWINTA 9519 .5 11.2 4 14.2 17.0 84 HICKERSON PARK 9145 .0 7.4 0 14.0 9.6 146 HOLE-IN-ROCK 9150 .7 6.3 11 14.0 9.1 154 INDIAN CREEK 9425 16.7 29.4 57 19.4 28.5 68 KELLEY R.S. 8180 9.3 16.1 58 16.5 22.8 72 SPIRIT LK 10223 7.8 -M * 19.8 -M * STEEL CREEK PARK 10200 13.0 18.0 72 16.3 19.3 84 ----- ----- Basin wide percent of average 42 87 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 11.3 -M * BUG LAKE 7950 11.0 20.5 54 17.0 21.6 79 BURTS MILLER RANCH 8000 .0 -M * 10.3 -M * CHALK CREEK #1 8993 12.6 26.0 48 21.0 28.9 73 HAYDEN FORK 9212 .8 15.2 5 19.6 24.1 81 KELLEY R.S. 8180 9.3 16.1 58 16.5 22.8 72 LILY LAKE 9156 2.2 13.2 17 13.6 20.3 67 MONTE CRISTO 8960 14.0 29.9 47 21.3 29.0 73 SALT RIVER SUMMIT 7760 4.0 13.0 31 11.6 20.9 56 ----- ----- Basin wide percent of average 40 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.