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 SATURDAY: APRIL 7 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.7 17.9 93 24.6 22.2 111 BLACK BEAR 8170 -M 40.5 * 43.5 42.0 104 BLIND BULL SUM 8650 23.2 28.8 81 17.4 23.1 75 COTTONWOOD CREEK 7670 17.3 24.4 71 24.6 28.6 86 EAST RIM DIVIDE 7930 7.6 13.6 56 11.4 12.5 91 GRAND TARGHEE 9260 38.5 -M * 30.4 -M * GRANITE CREEK 6770 12.2 18.2 67 16.7 20.5 81 GRASSY LAKE 7265 32.6 36.9 88 39.1 37.3 105 GROS VENTRE SUMMIT 8750 8.6 14.6 59 10.7 13.5 79 GUNSIGHT PASS 9820 12.5 -M * 14.4 -M * LEWIS LAKE DIVIDE 7850 32.6 36.5 89 35.5 38.1 93 PHILLIPS BENCH 8200 24.2 30.0 81 25.9 30.2 86 SALT RIVER SUMMIT 7760 8.3 14.9 56 11.0 19.6 56 SNAKE RIVER STATION 6920 15.0 18.9 79 25.4 23.1 110 SPRING CREEK DIVIDE 9000 22.9 27.7 83 22.5 27.5 82 THUMB DIVIDE 7980 16.8 19.3 87 19.1 19.7 97 TOGWOTEE PASS 9580 22.3 25.9 86 24.5 25.7 95 TWO OCEAN PLATEAU 9240 34.2 29.4 116 28.5 28.8 99 WILLOW CREEK 8380 23.2 31.3 74 32.3 33.5 96 YOUNTS PEAK 8350 15.9 17.7 90 16.1 16.8 96 ----- ----- Basin wide percent of average 82 93 MADISON-GALLATIN BLACK BEAR 8170 -M 40.5 * 43.5 42.0 104 CANYON 7870 12.9 14.0 92 16.0 16.0 100 MADISON PLATEAU 7750 27.4 26.0 105 32.8 27.9 118 WEST YELLOWSTONE 6700 9.3 12.4 75 18.4 13.4 137 WHISKEY CREEK 6800 17.2 17.7 97 24.7 21.8 113 ----- ----- Basin wide percent of average 95 112 YELLOWSTONE BEARTOOTH LAKE 9360 25.7 24.4 105 24.9 20.9 119 BURNT MTN 5880 1.0 6.2 16 12.4 16.3 76 CANYON 7870 12.9 14.0 92 16.0 16.0 100 COLE CREEK 7850 14.8 17.2 86 12.3 17.6 70 EVENING STAR 9200 29.9 30.9 97 32.8 26.4 124 FISHER CREEK 9100 38.4 36.3 106 36.5 37.8 97 NORTHEAST ENTRANCE 7350 7.7 11.2 69 -M 13.2 * PARKER PEAK 9400 25.0 22.5 111 23.8 17.0 140 SYLVAN LAKE 8420 18.3 23.3 79 25.5 21.8 117 THUMB DIVIDE 7980 16.8 19.3 87 19.1 19.7 97 TWO OCEAN PLATEAU 9240 34.2 29.4 116 28.5 28.8 99 WHITE MILL 8700 24.7 25.2 98 25.2 28.1 90 WOLVERINE 7650 7.7 11.7 66 13.4 13.3 101 ----- ----- Basin wide percent of average 95 103 WIND RIVER BURROUGHS CREEK 8750 13.8 15.0 92 14.4 17.0 85 CASTLE CREEK 8400 4.6 -M * 8.5 -M * COLD SPRINGS 9630 3.8 8.5 45 9.2 11.2 82 DEER PARK 9700 10.7 17.3 62 17.5 23.0 76 HOBBS PARK 10100 14.2 15.8 90 13.1 13.6 96 KIRWIN 9550 11.5 11.9 97 14.1 11.8 119 LITTLE WARM 9370 8.0 12.3 65 11.5 14.0 82 OWL CREEK 8975 .0 5.7 0 5.5 6.3 87 SOUTH PASS 9040 12.8 17.3 74 13.4 19.3 69 ST. LAWRENCE ALT 8620 .0 7.5 0 7.6 9.4 81 TOGWOTEE PASS 9580 22.3 25.9 86 24.5 25.7 95 TOWNSEND CREEK 8700 6.4 9.5 67 11.2 12.4 90 ----- ----- Basin wide percent of average 71 87 BIGHORN BASIN BALD MTN. 9380 21.1 20.7 102 15.6 18.2 86 BEAR TRAP MEADOW 8200 3.7 5.2 71 9.2 8.8 105 BONE SPRINGS DIV 9350 20.1 16.9 119 15.9 15.4 103 GRAVE SPRINGS 8550 6.9 10.0 69 10.7 10.3 104 KIRWIN 9550 11.5 11.9 97 14.1 11.8 119 MARQUETTE 8760 7.4 -M * 11.5 10.5 110 MIDDLE POWDER 7760 10.0 12.7 79 11.2 13.0 86 OWL CREEK 8975 .0 5.7 0 5.5 6.3 87 POWDER RIVER PASS 9480 10.1 11.4 89 15.9 13.0 122 SHELL CREEK 9580 18.5 15.3 121 16.3 14.0 116 TIMBER CREEK 7950 .5 5.9 8 9.3 7.8 119 ----- ----- Basin wide percent of average 89 105 SHOSHONE RIVER BLACKWATER 9780 25.2 25.6 98 24.7 21.5 115 EVENING STAR 9200 29.9 30.9 97 32.8 26.4 124 MARQUETTE 8760 7.4 -M * 11.5 10.5 110 SYLVAN ROAD 7120 6.8 12.7 54 18.8 18.3 103 YOUNTS PEAK 8350 15.9 17.7 90 16.1 16.8 96 ----- ----- Basin wide percent of average 90 111 POWDER RIVER BEAR TRAP MEADOW 8200 3.7 5.2 71 9.2 8.8 105 CLOUD PEAK RESERVOIR 9860 13.6 14.2 96 14.9 13.6 110 GRAVE SPRINGS 8550 6.9 10.0 69 10.7 10.3 104 HANSEN SAWMILL 8360 .0 6.5 0 8.4 8.7 97 MIDDLE POWDER 7760 10.0 12.7 79 11.2 13.0 86 POWDER RIVER PASS 9480 10.1 11.4 89 15.9 13.0 122 SOLDIER PARK 8720 7.3 -M * 9.9 -M * ----- ----- Basin wide percent of average 74 104 TONGUE RIVER BIG GOOSE 7990 7.8 11.5 68 14.3 9.3 154 BONE SPRINGS DIV 9350 20.1 16.9 119 15.9 15.4 103 BURGESS JUNCTION 7880 11.8 12.4 95 14.2 12.8 111 DOME LAKE 8880 12.5 13.1 95 15.1 13.8 109 LITTLE GOOSE 8870 7.5 -M * 16.5 -M * SUCKER CREEK 8880 11.5 12.5 92 15.4 14.3 108 TIE CREEK 6870 .0 6.2 0 13.7 10.5 130 ----- ----- Basin wide percent of average 88 116 BELLE FOURCHE COLE CANYON 5910 .0 7.1 0 8.0 7.0 114 ----- ----- Basin wide percent of average 0 114 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 8.2 0 10.4 11.6 90 NORTH RAPID CREEK 6130 .0 8.7 0 8.0 8.9 90 ----- ----- Basin wide percent of average 0 90 UPPER N. PLATTE ARAPAHO RIDGE 10960 14.8 23.8 62 16.5 27.7 60 BLACKHALL MTN 9820 20.7 -M * 23.0 -M * COLUMBINE 9160 9.5 25.1 38 19.2 26.2 73 DIVIDE PEAK 8880 8.0 20.5 39 18.8 21.5 87 JOE WRIGHT 10120 10.7 22.4 48 18.4 25.8 71 LAPRELE CREEK 8375 4.2 10.9 39 11.7 13.3 88 NORTH FRENCH CREEK 10130 17.0 30.9 55 19.1 25.6 75 NEVER SUMMER 10280 10.6 21.3 50 10.8 24.5 44 OLD BATTLE 10000 21.9 33.4 66 26.5 35.8 74 RAWAH 9020 .0 15.8 0 10.9 17.1 64 SAGE CREEK BASIN 7850 .0 11.9 0 10.3 12.5 82 SAND LAKE 10050 22.8 33.8 67 22.6 25.2 90 SOUTH BRUSH CREEK 8440 -M 13.4 * 11.3 17.2 66 TOWER 10500 28.0 47.5 59 30.4 39.9 76 WEBBER SPRINGS 9250 13.1 26.4 50 21.0 27.8 76 WILLOW CREEK PASS 9540 -M 12.8 * 9.2 13.4 69 ZIRKEL 9340 -M 25.9 * -M 26.9 * ----- ----- Basin wide percent of average 50 73 SWEETWATER DEER PARK 9700 10.7 17.3 62 17.5 23.0 76 LARSEN CREEK 9000 7.7 -M * 13.9 -M * SOUTH PASS 9040 12.8 17.3 74 13.4 19.3 69 ----- ----- Basin wide percent of average 68 73 LOWER N. PLATTE CASPER MTN. 7900 15.6 15.5 101 18.3 15.3 120 LAPRELE CREEK 8375 4.2 10.9 39 11.7 13.3 88 RENO HILL 8400 14.2 15.1 94 17.6 15.9 111 WINDY PEAK 7900 2.5 8.4 30 8.7 11.1 78 ----- ----- Basin wide percent of average 73 101 LARAMIE RIVER BROOKLYN LAKE 10240 14.5 25.0 58 18.5 23.1 80 CINNABAR PARK 9574 11.2 18.0 62 19.1 20.8 92 CROW CREEK 8330 .3 9.2 3 9.9 10.4 95 DEADMAN HILL 10220 16.3 17.3 94 15.4 17.7 87 RAWAH 9020 .0 15.8 0 10.9 17.1 64 ROACH 9700 11.5 17.9 64 16.2 19.4 84 ----- ----- Basin wide percent of average 52 83 S. PLATTE BLACK MOUNTAIN 8920 9.2 -M * 12.6 -M * CROW CREEK 8330 .3 9.2 3 9.9 10.4 95 DEADMAN HILL 10220 16.3 17.3 94 15.4 17.7 87 ----- ----- Basin wide percent of average 63 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.2 * 11.6 16.5 70 DIVIDE PEAK 8880 8.0 20.5 39 18.8 21.5 87 ELK RIVER 8700 -M 20.1 * 15.2 20.4 75 LITTLE SNAKE RIVER 8915 12.2 -M * 24.0 -M * OLD BATTLE 10000 21.9 33.4 66 26.5 35.8 74 SAGE CREEK BASIN 7850 .0 11.9 0 10.3 12.5 82 SANDSTONE RS 8150 -M 14.4 * 11.6 19.4 60 WHISKEY PARK 8950 15.5 30.7 50 23.6 29.8 79 ----- ----- Basin wide percent of average 47 75 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.0 15.1 86 13.8 13.9 99 BLIND BULL SUM 8650 23.2 28.8 81 17.4 23.1 75 EAST RIM DIVIDE 7930 7.6 13.6 56 11.4 12.5 91 ELKHART PARK G.S. 9400 14.0 13.9 101 15.2 13.9 109 GROS VENTRE SUMMIT 8750 8.6 14.6 59 10.7 13.5 79 GUNSIGHT PASS 9820 12.5 -M * 14.4 -M * KENDALL R.S. 7740 11.1 14.3 78 14.8 15.1 98 LOOMIS PARK 8240 10.9 17.5 62 16.4 18.1 91 NEW FORK LAKE 8340 8.8 11.5 77 10.6 11.8 90 POCKET CREEK 9360 10.4 -M * 12.2 -M * SNIDER BASIN 8060 10.9 15.0 73 12.9 16.8 77 SPRING CREEK DIVIDE 9000 22.9 27.7 83 22.5 27.5 82 TRIPLE PEAK 8500 18.4 25.7 72 25.0 25.8 97 ----- ----- Basin wide percent of average 76 89 LOWER GREEN RIVER BLACKS FORK JCT 8870 .8 -M * 11.1 -M * BUCK PASTURE 9700 .1 -M * 4.5 -M * EF BLACKS FORK GS 9308 5.1 -M * 9.6 -M * HAMS FORK 7840 5.4 11.3 48 9.8 12.7 77 HEWINTA 9519 6.4 12.5 51 13.0 15.3 85 HICKERSON PARK 9145 2.8 8.2 34 12.3 8.4 146 HOLE-IN-ROCK 9150 4.6 7.4 62 12.5 7.9 158 INDIAN CREEK 9425 19.0 29.0 66 17.9 26.5 68 KELLEY R.S. 8180 12.0 17.4 69 15.0 21.2 71 SPIRIT LK 10223 9.8 -M * 17.8 -M * STEEL CREEK PARK 10200 11.9 16.5 72 15.0 17.2 87 ----- ----- Basin wide percent of average 61 87 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 10.5 -M * BUG LAKE 7950 13.9 21.7 64 15.8 20.0 79 BURTS MILLER RANCH 8000 .4 -M * 9.6 -M * CHALK CREEK #1 8993 14.2 25.4 56 19.3 26.4 73 HAYDEN FORK 9212 6.8 16.9 40 18.1 22.0 82 KELLEY R.S. 8180 12.0 17.4 69 15.0 21.2 71 LILY LAKE 9156 7.1 14.4 49 12.7 18.4 69 MONTE CRISTO 8960 15.9 30.5 52 18.9 26.6 71 SALT RIVER SUMMIT 7760 8.3 14.9 56 11.0 19.6 56 ----- ----- Basin wide percent of average 55 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.