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 10 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.1 17.6 91 24.6 22.5 109 BLACK BEAR 8170 -M 40.6 * 43.8 42.5 103 BLIND BULL SUM 8650 23.4 28.9 81 17.4 23.4 74 COTTONWOOD CREEK 7670 16.5 24.3 68 24.7 29.0 85 EAST RIM DIVIDE 7930 6.8 13.8 49 11.6 12.7 91 GRAND TARGHEE 9260 38.1 -M * 30.6 -M * GRANITE CREEK 6770 11.5 17.8 65 16.8 20.7 81 GRASSY LAKE 7265 32.5 37.1 88 39.3 37.8 104 GROS VENTRE SUMMIT 8750 8.2 14.6 56 10.8 13.7 79 GUNSIGHT PASS 9820 12.0 -M * 14.7 -M * LEWIS LAKE DIVIDE 7850 32.7 36.6 89 36.2 38.6 94 PHILLIPS BENCH 8200 24.0 30.3 79 26.1 30.6 85 SALT RIVER SUMMIT 7760 7.8 14.8 53 11.6 19.9 58 SNAKE RIVER STATION 6920 14.9 18.5 81 25.4 23.5 108 SPRING CREEK DIVIDE 9000 22.8 28.1 81 22.8 27.9 82 THUMB DIVIDE 7980 16.5 19.2 86 19.2 20.0 96 TOGWOTEE PASS 9580 22.3 26.2 85 24.5 26.1 94 TWO OCEAN PLATEAU 9240 34.4 29.9 115 28.7 29.2 98 WILLOW CREEK 8380 21.9 31.6 69 32.3 34.1 95 YOUNTS PEAK 8350 16.1 17.9 90 16.2 17.1 95 ----- ----- Basin wide percent of average 81 92 MADISON-GALLATIN BLACK BEAR 8170 -M 40.6 * 43.8 42.5 103 CANYON 7870 12.7 14.1 90 16.3 16.2 101 MADISON PLATEAU 7750 27.5 26.0 106 33.0 28.3 117 WEST YELLOWSTONE 6700 9.2 12.1 76 18.5 13.6 136 WHISKEY CREEK 6800 17.2 17.8 97 25.1 22.2 113 ----- ----- Basin wide percent of average 95 111 YELLOWSTONE BEARTOOTH LAKE 9360 26.0 24.9 104 25.3 21.2 119 BURNT MTN 5880 .0 6.1 0 12.4 16.7 74 CANYON 7870 12.7 14.1 90 16.3 16.2 101 COLE CREEK 7850 14.8 17.6 84 12.3 18.1 68 EVENING STAR 9200 30.3 31.6 96 33.4 26.8 125 FISHER CREEK 9100 38.3 36.6 105 36.7 38.3 96 NORTHEAST ENTRANCE 7350 7.3 11.0 66 14.0 13.4 104 PARKER PEAK 9400 25.5 23.0 111 24.2 17.3 140 SYLVAN LAKE 8420 18.4 23.8 77 25.8 22.2 116 THUMB DIVIDE 7980 16.5 19.2 86 19.2 20.0 96 TWO OCEAN PLATEAU 9240 34.4 29.9 115 28.7 29.2 98 WHITE MILL 8700 24.9 25.5 98 25.4 28.5 89 WOLVERINE 7650 7.2 11.6 62 13.6 13.5 101 ----- ----- Basin wide percent of average 93 102 WIND RIVER BURROUGHS CREEK 8750 13.8 15.1 91 14.4 17.2 84 CASTLE CREEK 8400 3.8 -M * 8.8 -M * COLD SPRINGS 9630 2.2 8.2 27 9.5 11.6 82 DEER PARK 9700 10.4 17.3 60 17.7 23.4 76 HOBBS PARK 10100 13.7 16.2 85 13.7 14.0 98 KIRWIN 9550 11.6 12.1 96 14.3 12.0 119 LITTLE WARM 9370 7.8 12.4 63 11.8 14.3 83 OWL CREEK 8975 .0 5.6 0 5.7 6.5 88 SOUTH PASS 9040 12.7 17.5 73 13.6 19.7 69 ST. LAWRENCE ALT 8620 .0 7.5 0 7.6 9.7 78 TOGWOTEE PASS 9580 22.3 26.2 85 24.5 26.1 94 TOWNSEND CREEK 8700 5.7 9.6 59 11.3 12.7 89 ----- ----- Basin wide percent of average 68 86 BIGHORN BASIN BALD MTN. 9380 21.4 21.1 101 16.0 18.5 86 BEAR TRAP MEADOW 8200 2.9 5.0 58 9.4 9.0 104 BONE SPRINGS DIV 9350 20.7 17.2 120 16.5 15.7 105 GRAVE SPRINGS 8550 6.8 10.3 66 10.8 10.7 101 KIRWIN 9550 11.6 12.1 96 14.3 12.0 119 MARQUETTE 8760 7.6 -M * 11.9 10.8 110 MIDDLE POWDER 7760 10.0 13.2 76 11.3 13.3 85 OWL CREEK 8975 .0 5.6 0 5.7 6.5 88 POWDER RIVER PASS 9480 10.1 11.6 87 16.1 13.3 121 SHELL CREEK 9580 18.8 15.7 120 16.5 14.3 115 TIMBER CREEK 7950 .0 5.8 0 9.3 8.1 115 ----- ----- Basin wide percent of average 87 104 SHOSHONE RIVER BLACKWATER 9780 25.3 26.1 97 25.3 21.9 116 EVENING STAR 9200 30.3 31.6 96 33.4 26.8 125 MARQUETTE 8760 7.6 -M * 11.9 10.8 110 SYLVAN ROAD 7120 6.0 12.7 47 18.9 18.6 102 YOUNTS PEAK 8350 16.1 17.9 90 16.2 17.1 95 ----- ----- Basin wide percent of average 88 111 POWDER RIVER BEAR TRAP MEADOW 8200 2.9 5.0 58 9.4 9.0 104 CLOUD PEAK RESERVOIR 9860 13.4 14.6 92 15.3 14.0 109 GRAVE SPRINGS 8550 6.8 10.3 66 10.8 10.7 101 HANSEN SAWMILL 8360 .0 6.4 0 8.6 8.9 97 MIDDLE POWDER 7760 10.0 13.2 76 11.3 13.3 85 POWDER RIVER PASS 9480 10.1 11.6 87 16.1 13.3 121 SOLDIER PARK 8720 7.2 -M * 10.0 -M * ----- ----- Basin wide percent of average 71 103 TONGUE RIVER BIG GOOSE 7990 7.7 11.9 65 14.6 9.8 149 BONE SPRINGS DIV 9350 20.7 17.2 120 16.5 15.7 105 BURGESS JUNCTION 7880 11.9 12.7 94 14.5 13.1 111 DOME LAKE 8880 12.7 13.4 95 15.4 14.2 108 LITTLE GOOSE 8870 7.6 -M * 16.6 -M * SUCKER CREEK 8880 11.5 12.9 89 15.8 14.6 108 TIE CREEK 6870 .0 5.8 0 13.9 10.8 129 ----- ----- Basin wide percent of average 87 116 BELLE FOURCHE COLE CANYON 5910 .0 7.2 0 8.2 7.2 114 ----- ----- Basin wide percent of average 0 114 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 7.9 0 10.5 11.8 89 NORTH RAPID CREEK 6130 .0 8.9 0 8.1 9.1 89 ----- ----- Basin wide percent of average 0 89 UPPER N. PLATTE ARAPAHO RIDGE 10960 13.9 24.2 57 16.5 28.1 59 BLACKHALL MTN 9820 20.2 -M * 23.1 -M * COLUMBINE 9160 -M 25.0 * 19.4 26.5 73 DIVIDE PEAK 8880 -M 20.7 * 18.9 21.8 87 JOE WRIGHT 10120 10.0 22.9 44 18.4 26.4 70 LAPRELE CREEK 8375 2.7 10.8 25 11.8 13.6 87 NORTH FRENCH CREEK 10130 16.3 31.6 52 19.2 26.1 74 NEVER SUMMER 10280 10.3 21.8 47 10.8 25.0 43 OLD BATTLE 10000 22.3 33.9 66 26.8 36.3 74 RAWAH 9020 .0 16.0 0 11.0 17.4 63 SAGE CREEK BASIN 7850 -M 12.0 * 10.2 12.7 80 SAND LAKE 10050 22.7 34.2 66 22.8 25.7 89 SOUTH BRUSH CREEK 8440 -M 13.4 * 11.4 17.5 65 TOWER 10500 27.3 48.3 57 30.6 40.5 76 WEBBER SPRINGS 9250 12.1 26.3 46 21.1 28.2 75 WILLOW CREEK PASS 9540 -M 13.1 * 9.2 13.7 67 ZIRKEL 9340 -M 25.8 * -M 27.3 * ----- ----- Basin wide percent of average 51 72 SWEETWATER DEER PARK 9700 10.4 17.3 60 17.7 23.4 76 LARSEN CREEK 9000 6.8 -M * 14.1 -M * SOUTH PASS 9040 12.7 17.5 73 13.6 19.7 69 ----- ----- Basin wide percent of average 66 73 LOWER N. PLATTE CASPER MTN. 7900 15.4 16.0 96 18.3 15.8 116 LAPRELE CREEK 8375 2.7 10.8 25 11.8 13.6 87 RENO HILL 8400 13.4 15.5 86 18.0 16.5 109 WINDY PEAK 7900 1.4 8.4 17 8.8 11.3 78 ----- ----- Basin wide percent of average 65 99 LARAMIE RIVER BROOKLYN LAKE 10240 13.8 25.6 54 18.6 23.6 79 CINNABAR PARK 9574 10.3 17.9 58 19.2 21.0 91 CROW CREEK 8330 .1 9.3 1 10.1 10.7 94 DEADMAN HILL 10220 16.4 17.7 93 15.4 18.1 85 RAWAH 9020 .0 16.0 0 11.0 17.4 63 ROACH 9700 10.7 18.2 59 16.2 19.8 82 ----- ----- Basin wide percent of average 49 82 S. PLATTE BLACK MOUNTAIN 8920 8.3 -M * 12.6 -M * CROW CREEK 8330 .1 9.3 1 10.1 10.7 94 DEADMAN HILL 10220 16.4 17.7 93 15.4 18.1 85 ----- ----- Basin wide percent of average 61 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.7 * 11.7 16.8 70 DIVIDE PEAK 8880 -M 20.7 * 18.9 21.8 87 ELK RIVER 8700 -M 20.1 * 15.3 20.7 74 LITTLE SNAKE RIVER 8915 10.5 -M * 24.0 -M * OLD BATTLE 10000 22.3 33.9 66 26.8 36.3 74 SAGE CREEK BASIN 7850 -M 12.0 * 10.2 12.7 80 SANDSTONE RS 8150 -M 14.1 * 11.7 19.7 59 WHISKEY PARK 8950 14.1 30.7 46 23.7 30.2 78 ----- ----- Basin wide percent of average 56* 75 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.7 15.2 84 13.8 14.1 98 BLIND BULL SUM 8650 23.4 28.9 81 17.4 23.4 74 EAST RIM DIVIDE 7930 6.8 13.8 49 11.6 12.7 91 ELKHART PARK G.S. 9400 13.9 14.0 99 15.3 14.2 108 GROS VENTRE SUMMIT 8750 8.2 14.6 56 10.8 13.7 79 GUNSIGHT PASS 9820 12.0 -M * 14.7 -M * KENDALL R.S. 7740 10.1 14.1 72 14.7 15.2 97 LOOMIS PARK 8240 9.9 17.4 57 16.6 18.3 91 NEW FORK LAKE 8340 8.1 11.5 70 10.7 12.0 89 POCKET CREEK 9360 10.5 -M * 12.4 -M * SNIDER BASIN 8060 10.3 15.0 69 13.1 17.1 77 SPRING CREEK DIVIDE 9000 22.8 28.1 81 22.8 27.9 82 TRIPLE PEAK 8500 17.5 25.8 68 25.2 26.1 97 ----- ----- Basin wide percent of average 72 88 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 11.3 -M * BUCK PASTURE 9700 .1 -M * 4.4 -M * EF BLACKS FORK GS 9308 3.1 -M * 9.7 -M * HAMS FORK 7840 4.6 10.8 43 10.0 13.0 77 HEWINTA 9519 5.5 12.5 44 13.2 15.6 85 HICKERSON PARK 9145 .6 8.4 7 12.6 8.6 147 HOLE-IN-ROCK 9150 4.0 7.5 53 12.7 8.1 157 INDIAN CREEK 9425 18.2 29.3 62 18.3 27.0 68 KELLEY R.S. 8180 11.7 17.4 67 15.3 21.5 71 SPIRIT LK 10223 8.2 -M * 18.0 -M * STEEL CREEK PARK 10200 11.8 16.8 70 15.0 17.6 85 ----- ----- Basin wide percent of average 55 87 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 10.5 -M * BUG LAKE 7950 13.6 21.8 62 15.9 20.3 78 BURTS MILLER RANCH 8000 .4 -M * 9.5 -M * CHALK CREEK #1 8993 13.7 25.6 54 19.2 26.8 72 HAYDEN FORK 9212 4.7 16.8 28 18.2 22.4 81 KELLEY R.S. 8180 11.7 17.4 67 15.3 21.5 71 LILY LAKE 9156 5.7 14.6 39 12.6 18.8 67 MONTE CRISTO 8960 15.4 30.6 50 19.2 27.0 71 SALT RIVER SUMMIT 7760 7.8 14.8 53 11.6 19.9 58 ----- ----- Basin wide percent of average 51 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.