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: MARCH 31 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.8 18.1 104 24.0 21.6 111 BLACK BEAR 8170 41.5 39.6 105 41.4 40.7 102 BLIND BULL SUM 8650 22.9 28.2 81 17.3 22.4 77 COTTONWOOD CREEK 7670 18.8 24.1 78 24.4 27.6 88 EAST RIM DIVIDE 7930 9.9 13.2 75 11.6 12.1 96 GRAND TARGHEE 9260 37.4 -M * 29.6 -M * GRANITE CREEK 6770 14.0 18.7 75 16.5 20.1 82 GRASSY LAKE 7265 33.7 36.0 94 38.5 36.2 106 GROS VENTRE SUMMIT 8750 9.3 14.3 65 10.5 13.0 81 GUNSIGHT PASS 9820 12.6 -M * 14.3 -M * LEWIS LAKE DIVIDE 7850 33.2 35.7 93 35.1 37.0 95 PHILLIPS BENCH 8200 24.7 29.1 85 25.6 29.2 88 SALT RIVER SUMMIT 7760 10.1 14.6 69 11.6 18.9 61 SNAKE RIVER STATION 6920 16.6 19.2 86 25.0 22.4 112 SPRING CREEK DIVIDE 9000 22.8 26.8 85 22.4 26.6 84 THUMB DIVIDE 7980 17.3 19.2 90 18.6 19.0 98 TOGWOTEE PASS 9580 21.8 25.0 87 24.0 24.7 97 TWO OCEAN PLATEAU 9240 32.8 28.2 116 27.8 27.9 100 WILLOW CREEK 8380 25.0 30.5 82 31.8 32.4 98 YOUNTS PEAK 8350 16.2 17.2 94 15.7 16.2 97 ----- ----- Basin wide percent of average 89 94 MADISON-GALLATIN BLACK BEAR 8170 41.5 39.6 105 41.4 40.7 102 CANYON 7870 12.5 13.9 90 14.8 15.5 95 MADISON PLATEAU 7750 26.1 25.4 103 30.5 26.9 113 WEST YELLOWSTONE 6700 10.1 12.8 79 17.2 13.2 130 WHISKEY CREEK 6800 16.7 17.4 96 22.7 21.1 108 ----- ----- Basin wide percent of average 98 108 YELLOWSTONE BEARTOOTH LAKE 9360 24.7 23.5 105 24.0 20.2 119 BURNT MTN 5880 .4 6.2 6 11.3 15.2 74 CANYON 7870 12.5 13.9 90 14.8 15.5 95 COLE CREEK 7850 13.6 16.2 84 11.3 16.5 68 EVENING STAR 9200 29.3 30.0 98 31.6 25.4 124 FISHER CREEK 9100 36.3 35.3 103 34.3 36.6 94 NORTHEAST ENTRANCE 7350 8.6 11.3 76 -M 12.7 * PARKER PEAK 9400 23.8 21.8 109 23.0 16.3 141 SYLVAN LAKE 8420 18.7 22.7 82 24.7 21.0 118 THUMB DIVIDE 7980 17.3 19.2 90 18.6 19.0 98 TWO OCEAN PLATEAU 9240 32.8 28.2 116 27.8 27.9 100 WHITE MILL 8700 23.0 24.5 94 23.8 27.2 88 WOLVERINE 7650 10.0 11.6 86 13.1 12.8 102 ----- ----- Basin wide percent of average 95 102 WIND RIVER BURROUGHS CREEK 8750 13.9 14.8 94 14.3 16.3 88 CASTLE CREEK 8400 6.1 -M * 8.7 -M * COLD SPRINGS 9630 6.1 9.0 68 9.2 10.6 87 DEER PARK 9700 10.9 17.0 64 17.2 21.9 79 HOBBS PARK 10100 13.8 15.0 92 13.0 12.8 102 KIRWIN 9550 12.2 11.4 107 14.1 11.2 126 LITTLE WARM 9370 8.4 12.0 70 11.3 13.4 84 OWL CREEK 8975 2.1 5.6 38 5.7 5.8 98 SOUTH PASS 9040 13.1 16.7 78 13.3 18.5 72 ST. LAWRENCE ALT 8620 .4 7.4 5 7.4 8.8 84 TOGWOTEE PASS 9580 21.8 25.0 87 24.0 24.7 97 TOWNSEND CREEK 8700 7.0 8.7 80 11.0 11.6 95 ----- ----- Basin wide percent of average 77 90 BIGHORN BASIN BALD MTN. 9380 20.4 19.7 104 15.4 17.4 89 BEAR TRAP MEADOW 8200 5.6 5.2 108 8.8 8.2 107 BONE SPRINGS DIV 9350 18.7 16.3 115 15.4 14.6 105 GRAVE SPRINGS 8550 7.6 9.4 81 10.2 9.6 106 KIRWIN 9550 12.2 11.4 107 14.1 11.2 126 MARQUETTE 8760 7.9 -M * 11.6 9.7 120 MIDDLE POWDER 7760 9.8 11.8 83 10.6 12.3 86 OWL CREEK 8975 2.1 5.6 38 5.7 5.8 98 POWDER RIVER PASS 9480 10.8 10.9 99 15.0 12.3 122 SHELL CREEK 9580 18.0 14.8 122 15.6 13.3 117 TIMBER CREEK 7950 .9 5.8 16 8.7 7.3 119 ----- ----- Basin wide percent of average 96 108 SHOSHONE RIVER BLACKWATER 9780 24.5 24.8 99 24.0 20.6 117 EVENING STAR 9200 29.3 30.0 98 31.6 25.4 124 MARQUETTE 8760 7.9 -M * 11.6 9.7 120 SYLVAN ROAD 7120 9.8 12.9 76 17.7 17.7 100 YOUNTS PEAK 8350 16.2 17.2 94 15.7 16.2 97 ----- ----- Basin wide percent of average 94 112 POWDER RIVER BEAR TRAP MEADOW 8200 5.6 5.2 108 8.8 8.2 107 CLOUD PEAK RESERVOIR 9860 13.9 13.4 104 14.9 12.8 116 GRAVE SPRINGS 8550 7.6 9.4 81 10.2 9.6 106 HANSEN SAWMILL 8360 2.1 6.4 33 8.4 8.1 104 MIDDLE POWDER 7760 9.8 11.8 83 10.6 12.3 86 POWDER RIVER PASS 9480 10.8 10.9 99 15.0 12.3 122 SOLDIER PARK 8720 9.8 -M * 9.8 -M * ----- ----- Basin wide percent of average 87 107 TONGUE RIVER BIG GOOSE 7990 8.3 10.6 78 13.6 8.4 162 BONE SPRINGS DIV 9350 18.7 16.3 115 15.4 14.6 105 BURGESS JUNCTION 7880 11.4 11.7 97 13.9 12.1 115 DOME LAKE 8880 12.7 12.4 102 14.3 13.1 109 LITTLE GOOSE 8870 8.3 -M * 15.6 -M * SUCKER CREEK 8880 11.9 11.8 101 14.7 13.5 109 TIE CREEK 6870 .3 5.9 5 13.4 9.8 137 ----- ----- Basin wide percent of average 92 119 BELLE FOURCHE COLE CANYON 5910 -M 6.8 * 8.2 6.7 122 ----- ----- Basin wide percent of average * 122 CHEYENNE RIVER BASIN BLIND PARK 6890 .3 8.7 3 10.3 11.0 94 NORTH RAPID CREEK 6130 .6 8.2 7 8.0 8.6 93 ----- ----- Basin wide percent of average 5 93 UPPER N. PLATTE ARAPAHO RIDGE 10960 15.1 22.8 66 16.6 26.7 62 BLACKHALL MTN 9820 21.1 -M * 23.1 -M * COLUMBINE 9160 12.7 25.0 51 19.5 25.2 77 DIVIDE PEAK 8880 11.0 19.9 55 18.7 20.7 90 JOE WRIGHT 10120 11.9 21.3 56 18.5 24.7 75 LAPRELE CREEK 8375 6.9 10.9 63 11.6 12.5 93 NORTH FRENCH CREEK 10130 17.9 29.3 61 19.2 24.6 78 NEVER SUMMER 10280 11.3 20.2 56 10.9 23.5 46 OLD BATTLE 10000 22.4 32.3 69 26.8 34.6 77 RAWAH 9020 3.7 15.0 25 10.9 16.4 66 SAGE CREEK BASIN 7850 4.5 11.5 39 10.1 12.0 84 SAND LAKE 10050 22.7 32.5 70 22.7 24.0 95 SOUTH BRUSH CREEK 8440 -M 13.1 * 11.7 16.3 72 TOWER 10500 28.3 45.6 62 30.7 38.4 80 WEBBER SPRINGS 9250 14.6 26.3 56 20.9 26.7 78 WILLOW CREEK PASS 9540 -M 12.0 * 9.2 12.8 72 ZIRKEL 9340 18.1 25.8 70 24.2 26.0 93 ----- ----- Basin wide percent of average 59 77 SWEETWATER DEER PARK 9700 10.9 17.0 64 17.2 21.9 79 LARSEN CREEK 9000 10.4 -M * 13.8 -M * SOUTH PASS 9040 13.1 16.7 78 13.3 18.5 72 ----- ----- Basin wide percent of average 71 75 LOWER N. PLATTE CASPER MTN. 7900 16.4 14.4 114 17.5 14.3 122 LAPRELE CREEK 8375 6.9 10.9 63 11.6 12.5 93 RENO HILL 8400 14.1 14.2 99 17.2 14.8 116 WINDY PEAK 7900 5.1 8.1 63 8.6 10.5 82 ----- ----- Basin wide percent of average 89 105 LARAMIE RIVER BROOKLYN LAKE 10240 15.7 23.7 66 18.6 22.0 85 CINNABAR PARK 9574 13.0 17.8 73 19.2 20.0 96 CROW CREEK 8330 3.6 8.9 40 10.1 9.9 102 DEADMAN HILL 10220 15.6 16.3 96 15.0 16.8 89 RAWAH 9020 3.7 15.0 25 10.9 16.4 66 ROACH 9700 11.8 17.0 69 15.8 18.6 85 ----- ----- Basin wide percent of average 64 86 S. PLATTE BLACK MOUNTAIN 8920 9.2 -M * 12.2 -M * CROW CREEK 8330 3.6 8.9 40 10.1 9.9 102 DEADMAN HILL 10220 15.6 16.3 96 15.0 16.8 89 ----- ----- Basin wide percent of average 76 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.3 11.1 39 11.8 15.8 75 DIVIDE PEAK 8880 11.0 19.9 55 18.7 20.7 90 ELK RIVER 8700 8.6 19.5 44 15.4 19.6 79 LITTLE SNAKE RIVER 8915 14.5 -M * 23.9 -M * OLD BATTLE 10000 22.4 32.3 69 26.8 34.6 77 SAGE CREEK BASIN 7850 4.5 11.5 39 10.1 12.0 84 SANDSTONE RS 8150 5.7 14.9 38 11.9 18.7 64 WHISKEY PARK 8950 17.3 30.3 57 23.7 28.7 83 ----- ----- Basin wide percent of average 53 79 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 14.6 93 13.6 13.4 101 BLIND BULL SUM 8650 22.9 28.2 81 17.3 22.4 77 EAST RIM DIVIDE 7930 9.9 13.2 75 11.6 12.1 96 ELKHART PARK G.S. 9400 13.9 13.5 103 15.1 13.4 113 GROS VENTRE SUMMIT 8750 9.3 14.3 65 10.5 13.0 81 GUNSIGHT PASS 9820 12.6 -M * 14.3 -M * KENDALL R.S. 7740 13.2 14.6 90 14.9 14.7 101 LOOMIS PARK 8240 13.2 17.5 75 16.5 17.5 94 NEW FORK LAKE 8340 10.6 11.3 94 10.7 11.4 94 POCKET CREEK 9360 10.3 -M * 12.3 -M * SNIDER BASIN 8060 12.1 14.7 82 13.1 16.2 81 SPRING CREEK DIVIDE 9000 22.8 26.8 85 22.4 26.6 84 TRIPLE PEAK 8500 21.2 25.1 84 24.9 24.9 100 ----- ----- Basin wide percent of average 84 92 LOWER GREEN RIVER BLACKS FORK JCT 8870 2.8 -M * 10.7 -M * BUCK PASTURE 9700 .1 -M * 4.0 -M * EF BLACKS FORK GS 9308 6.3 -M * 9.2 -M * HAMS FORK 7840 7.9 12.1 65 9.7 12.3 79 HEWINTA 9519 7.0 12.0 58 12.5 14.6 86 HICKERSON PARK 9145 5.4 7.6 71 12.1 7.9 153 HOLE-IN-ROCK 9150 6.2 7.1 87 12.0 7.4 162 INDIAN CREEK 9425 20.2 28.1 72 17.9 25.6 70 KELLEY R.S. 8180 12.9 17.0 76 15.2 20.4 75 SPIRIT LK 10223 10.9 -M * 17.5 -M * STEEL CREEK PARK 10200 10.1 15.8 64 14.3 16.2 88 ----- ----- Basin wide percent of average 70 90 UPPER BEAR RIVER BEAR RIVER RS 8500 2.0 -M * 10.1 -M * BUG LAKE 7950 14.5 21.1 69 15.7 19.4 81 BURTS MILLER RANCH 8000 1.5 -M * 9.9 -M * CHALK CREEK #1 8993 14.8 24.8 60 18.5 25.2 73 HAYDEN FORK 9212 7.9 16.5 48 17.5 21.0 83 KELLEY R.S. 8180 12.9 17.0 76 15.2 20.4 75 LILY LAKE 9156 8.4 13.3 63 12.0 17.5 69 MONTE CRISTO 8960 17.2 30.0 57 18.8 25.6 73 SALT RIVER SUMMIT 7760 10.1 14.6 69 11.6 18.9 61 ----- ----- Basin wide percent of average 62 74 ----------------------------------------------------------------------------- -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.