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 17 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.7 17.5 107 22.3 20.3 110 BLACK BEAR 8170 35.5 36.8 96 35.0 37.4 94 BLIND BULL SUM 8650 21.4 26.1 82 16.5 20.8 79 COTTONWOOD CREEK 7670 18.0 21.9 82 22.9 25.4 90 EAST RIM DIVIDE 7930 10.6 12.3 86 11.1 11.3 98 GRAND TARGHEE 9260 33.3 -M * 26.7 -M * GRANITE CREEK 6770 15.7 18.1 87 15.9 19.0 84 GRASSY LAKE 7265 30.8 33.3 92 34.5 33.9 102 GROS VENTRE SUMMIT 8750 9.3 13.1 71 9.9 12.0 82 GUNSIGHT PASS 9820 11.4 -M * 12.6 -M * LEWIS LAKE DIVIDE 7850 29.5 33.2 89 31.9 34.7 92 PHILLIPS BENCH 8200 23.0 26.9 86 24.3 27.2 89 SALT RIVER SUMMIT 7760 10.3 13.5 76 11.1 17.4 64 SNAKE RIVER STATION 6920 16.9 18.5 91 23.2 21.1 110 SPRING CREEK DIVIDE 9000 21.5 24.7 87 21.5 24.7 87 THUMB DIVIDE 7980 16.0 17.7 90 16.6 17.7 94 TOGWOTEE PASS 9580 20.4 23.0 89 22.3 22.8 98 TWO OCEAN PLATEAU 9240 30.9 25.9 119 26.2 25.9 101 WILLOW CREEK 8380 24.5 28.3 87 29.3 29.9 98 YOUNTS PEAK 8350 15.8 16.0 99 15.0 15.0 100 ----- ----- Basin wide percent of average 91 94 MADISON-GALLATIN BLACK BEAR 8170 35.5 36.8 96 35.0 37.4 94 CANYON 7870 11.7 12.9 91 13.2 14.4 92 MADISON PLATEAU 7750 22.2 23.4 95 26.0 24.7 105 WEST YELLOWSTONE 6700 10.6 12.2 87 -M 11.9 * WHISKEY CREEK 6800 14.7 16.1 91 19.0 19.5 97 ----- ----- Basin wide percent of average 93 97 YELLOWSTONE BEARTOOTH LAKE 9360 23.0 22.2 104 22.3 18.8 119 BURNT MTN 5880 4.1 5.6 73 10.3 13.1 79 CANYON 7870 11.7 12.9 91 13.2 14.4 92 COLE CREEK 7850 12.8 13.7 93 10.3 14.3 72 EVENING STAR 9200 27.6 27.7 100 29.4 23.7 124 FISHER CREEK 9100 32.3 32.7 99 30.9 33.9 91 NORTHEAST ENTRANCE 7350 9.7 10.7 91 -M 11.8 * PARKER PEAK 9400 21.3 20.1 106 21.0 15.1 139 SYLVAN LAKE 8420 17.8 20.9 85 22.9 19.6 117 THUMB DIVIDE 7980 16.0 17.7 90 16.6 17.7 94 TWO OCEAN PLATEAU 9240 30.9 25.9 119 26.2 25.9 101 WHITE MILL 8700 20.6 22.7 91 21.5 25.2 85 WOLVERINE 7650 11.8 11.4 104 12.2 12.1 101 ----- ----- Basin wide percent of average 98 101 WIND RIVER BURROUGHS CREEK 8750 13.6 13.8 99 14.1 15.1 93 CASTLE CREEK 8400 7.3 -M * 8.6 -M * COLD SPRINGS 9630 7.6 8.2 93 9.2 9.4 98 DEER PARK 9700 10.8 15.3 71 16.4 20.1 82 HOBBS PARK 10100 13.7 13.3 103 12.5 11.2 112 KIRWIN 9550 11.8 10.3 115 13.7 10.2 134 LITTLE WARM 9370 8.1 10.8 75 10.6 12.1 88 OWL CREEK 8975 4.7 4.8 98 5.6 5.0 112 SOUTH PASS 9040 12.9 15.5 83 13.1 16.7 78 ST. LAWRENCE ALT 8620 4.9 6.7 73 7.3 7.8 94 TOGWOTEE PASS 9580 20.4 23.0 89 22.3 22.8 98 TOWNSEND CREEK 8700 8.0 7.8 103 11.0 10.1 109 ----- ----- Basin wide percent of average 90 97 BIGHORN BASIN BALD MTN. 9380 19.5 17.8 110 14.5 15.8 92 BEAR TRAP MEADOW 8200 8.2 5.0 164 8.6 7.2 119 BONE SPRINGS DIV 9350 18.4 14.6 126 14.7 13.1 112 GRAVE SPRINGS 8550 8.3 8.3 100 9.7 8.8 110 KIRWIN 9550 11.8 10.3 115 13.7 10.2 134 MARQUETTE 8760 8.7 -M * 11.4 8.4 136 MIDDLE POWDER 7760 10.1 10.3 98 10.5 10.9 96 OWL CREEK 8975 4.7 4.8 98 5.6 5.0 112 POWDER RIVER PASS 9480 11.4 9.9 115 13.9 11.1 125 SHELL CREEK 9580 17.1 13.3 129 15.0 12.0 125 TIMBER CREEK 7950 4.4 4.9 90 8.5 6.3 135 ----- ----- Basin wide percent of average 115 116 SHOSHONE RIVER BLACKWATER 9780 23.2 22.7 102 22.8 19.0 120 EVENING STAR 9200 27.6 27.7 100 29.4 23.7 124 MARQUETTE 8760 8.7 -M * 11.4 8.4 136 SYLVAN ROAD 7120 12.2 12.2 100 16.8 16.7 101 YOUNTS PEAK 8350 15.8 16.0 99 15.0 15.0 100 ----- ----- Basin wide percent of average 100 115 POWDER RIVER BEAR TRAP MEADOW 8200 8.2 5.0 164 8.6 7.2 119 CLOUD PEAK RESERVOIR 9860 15.5 11.6 134 14.8 11.2 132 GRAVE SPRINGS 8550 8.3 8.3 100 9.7 8.8 110 HANSEN SAWMILL 8360 5.7 5.9 97 8.2 7.2 114 MIDDLE POWDER 7760 10.1 10.3 98 10.5 10.9 96 POWDER RIVER PASS 9480 11.4 9.9 115 13.9 11.1 125 SOLDIER PARK 8720 12.8 -M * 9.6 -M * ----- ----- Basin wide percent of average 116 116 TONGUE RIVER BIG GOOSE 7990 9.3 8.9 104 13.5 7.5 180 BONE SPRINGS DIV 9350 18.4 14.6 126 14.7 13.1 112 BURGESS JUNCTION 7880 11.9 10.2 117 13.9 10.7 130 DOME LAKE 8880 14.2 10.8 131 14.3 11.5 124 LITTLE GOOSE 8870 10.3 -M * 15.4 -M * SUCKER CREEK 8880 13.4 10.3 130 14.6 11.9 123 TIE CREEK 6870 5.9 5.9 100 13.3 8.8 151 ----- ----- Basin wide percent of average 120 133 BELLE FOURCHE COLE CANYON 5910 5.6 6.3 89 8.0 6.1 131 ----- ----- Basin wide percent of average 89 131 CHEYENNE RIVER BASIN BLIND PARK 6890 6.5 8.4 77 9.9 10.2 97 NORTH RAPID CREEK 6130 6.5 7.6 86 7.8 8.0 98 ----- ----- Basin wide percent of average 81 97 UPPER N. PLATTE ARAPAHOE 4020 -M -M * -M -M * BLACKHALL MTN 9820 21.4 -M * 22.7 -M * COLUMBINE 9160 17.8 24.0 74 19.2 23.2 83 DIVIDE PEAK 8880 13.4 18.0 74 18.0 19.0 95 JOE WRIGHT 10120 13.2 19.3 68 18.3 22.5 81 LAPRELE CREEK 8375 8.8 10.1 87 11.5 11.3 102 NORTH FRENCH CREEK 10130 18.6 26.0 72 18.7 22.6 83 NEVER SUMMER 10280 11.7 18.3 64 10.7 21.4 50 OLD BATTLE 10000 22.0 29.6 74 25.7 31.9 81 RAWAH 9020 7.2 13.6 53 10.6 14.9 71 SAGE CREEK BASIN 7850 11.4 10.4 110 9.8 11.0 89 SAND LAKE 10050 22.7 29.2 78 22.5 21.7 104 SOUTH BRUSH CREEK 8440 6.9 11.9 58 11.0 14.8 74 TOWER 10500 28.5 41.7 68 29.8 35.4 84 WEBBER SPRINGS 9250 16.5 24.6 67 20.2 24.5 82 WILLOW CREEK PASS 9540 -M 10.8 * 9.1 11.6 78 ZIRKEL 9340 22.2 24.7 90 -M 23.9 * ----- ----- Basin wide percent of average 73 82 SWEETWATER DEER PARK 9700 10.8 15.3 71 16.4 20.1 82 LARSEN CREEK 9000 11.1 -M * 12.7 -M * SOUTH PASS 9040 12.9 15.5 83 13.1 16.7 78 ----- ----- Basin wide percent of average 77 80 LOWER N. PLATTE CASPER MTN. 7900 17.0 12.7 134 17.0 12.6 135 LAPRELE CREEK 8375 8.8 10.1 87 11.5 11.3 102 RENO HILL 8400 14.9 12.2 122 16.7 13.1 127 WINDY PEAK 7900 6.8 7.3 93 8.6 9.5 91 ----- ----- Basin wide percent of average 112 116 LARAMIE RIVER BROOKLYN LAKE 10240 17.0 21.3 80 18.5 19.8 93 CINNABAR PARK 9574 14.9 17.2 87 19.2 18.7 103 CROW CREEK 8330 7.1 8.2 87 10.1 8.9 113 DEADMAN HILL 10220 16.3 14.6 112 14.9 15.1 99 RAWAH 9020 7.2 13.6 53 10.6 14.9 71 ROACH 9700 12.6 15.5 81 15.7 16.9 93 ----- ----- Basin wide percent of average 83 94 S. PLATTE BLACK MOUNTAIN 8920 10.1 -M * 12.3 -M * CROW CREEK 8330 7.1 8.2 87 10.1 8.9 113 DEADMAN HILL 10220 16.3 14.6 112 14.9 15.1 99 ----- ----- Basin wide percent of average 103 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.2 11.4 89 10.9 14.2 77 DIVIDE PEAK 8880 13.4 18.0 74 18.0 19.0 95 ELK RIVER 8700 12.7 18.0 71 14.8 18.0 82 LITTLE SNAKE RIVER 8915 18.2 -M * 23.4 -M * OLD BATTLE 10000 22.0 29.6 74 25.7 31.9 81 SAGE CREEK BASIN 7850 11.4 10.4 110 9.8 11.0 89 SANDSTONE RS 8150 9.6 14.4 67 11.9 17.4 68 WHISKEY PARK 8950 20.2 27.7 73 23.3 26.2 89 ----- ----- Basin wide percent of average 77 83 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.4 13.5 92 12.4 12.5 99 BLIND BULL SUM 8650 21.4 26.1 82 16.5 20.8 79 EAST RIM DIVIDE 7930 10.6 12.3 86 11.1 11.3 98 ELKHART PARK G.S. 9400 12.3 12.5 98 13.2 12.2 108 GROS VENTRE SUMMIT 8750 9.3 13.1 71 9.9 12.0 82 GUNSIGHT PASS 9820 11.4 -M * 12.6 -M * KENDALL R.S. 7740 13.9 14.1 99 14.6 13.8 106 LOOMIS PARK 8240 13.3 16.4 81 15.6 16.3 96 NEW FORK LAKE 8340 10.8 10.6 102 10.1 10.6 95 POCKET CREEK 9360 9.2 -M * 11.3 -M * SNIDER BASIN 8060 12.3 13.8 89 12.6 15.0 84 SPRING CREEK DIVIDE 9000 21.5 24.7 87 21.5 24.7 87 TRIPLE PEAK 8500 21.6 23.4 92 24.1 23.1 104 ----- ----- Basin wide percent of average 88 94 LOWER GREEN RIVER BLACKS FORK JCT 8870 4.5 -M * 9.8 -M * BUCK PASTURE 9700 .1 -M * 2.9 -M * EF BLACKS FORK GS 9308 8.3 -M * 8.5 -M * HAMS FORK 7840 9.3 12.3 76 8.9 11.4 78 HEWINTA 9519 8.3 10.6 78 11.2 13.1 85 HICKERSON PARK 9145 7.7 6.6 117 11.1 7.0 159 HOLE-IN-ROCK 9150 7.1 6.4 111 10.8 6.6 164 INDIAN CREEK 9425 18.9 25.5 74 16.8 23.4 72 KELLEY R.S. 8180 12.0 15.8 76 14.2 18.9 75 SPIRIT LK 10223 9.3 -M * 15.7 -M * STEEL CREEK PARK 10200 -M 14.4 * 12.7 14.5 88 ----- ----- Basin wide percent of average 82 90 UPPER BEAR RIVER BEAR RIVER RS 8500 5.2 -M * 9.1 -M * BUG LAKE 7950 14.1 19.4 73 14.6 17.9 82 BURTS MILLER RANCH 8000 4.6 -M * 9.5 -M * CHALK CREEK #1 8993 14.1 22.8 62 16.8 23.1 73 HAYDEN FORK 9212 8.9 15.1 59 15.7 19.1 82 KELLEY R.S. 8180 12.0 15.8 76 14.2 18.9 75 LILY LAKE 9156 8.5 12.1 70 10.8 15.9 68 MONTE CRISTO 8960 17.2 28.0 61 17.5 23.5 74 SALT RIVER SUMMIT 7760 10.3 13.5 76 11.1 17.4 64 ----- ----- Basin wide percent of average 67 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.