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: FEBRUARY 25 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.8 15.5 108 20.1 18.0 112 COTTONWOOD CREEK 7670 16.4 17.6 93 21.3 22.2 96 EAST RIM DIVIDE 7930 9.8 10.6 92 10.3 9.8 105 GRAND TARGHEE 9260 28.5 -M * 23.2 -M * GRANITE CREEK 6770 14.1 15.5 91 14.6 16.8 87 GRASSY LAKE 7265 25.6 28.4 90 29.3 30.0 98 GROS VENTRE SUMMIT 8750 8.0 11.1 72 8.5 10.4 82 GUNSIGHT PASS 9820 10.0 -M * 10.8 -M * LEWIS LAKE DIVIDE 7850 23.8 28.6 83 27.9 30.4 92 PHILLIPS BENCH 8200 19.1 23.0 83 20.8 23.8 87 SALT RIVER SUMMIT 7760 9.5 11.7 81 10.2 15.3 67 SNAKE RIVER STATION 6920 15.6 15.9 98 20.3 18.9 107 SPRING CREEK DIVIDE 9000 19.8 21.3 93 19.8 21.8 91 THUMB DIVIDE 7980 12.1 14.7 82 13.3 15.4 86 TOGWOTEE PASS 9580 17.7 20.1 88 19.5 20.0 98 TWO OCEAN PLATEAU 9240 26.7 22.6 118 21.3 22.5 95 WILLOW CREEK 8380 21.5 24.5 88 26.6 26.1 102 ----- ----- Basin wide percent of average 91 94 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.2 19.4 104 19.6 16.6 118 BLACK BEAR 8170 26.8 32.0 84 27.6 32.0 86 CANYON 7870 9.9 11.1 89 11.4 12.6 90 FISHER CREEK 9100 27.1 28.8 94 26.6 29.5 90 MADISON PLATEAU 7750 16.3 20.2 81 20.0 21.3 94 NORTHEAST ENTRANCE 7350 8.7 9.5 92 -M 10.5 * PARKER PEAK 9400 18.4 17.8 103 18.3 13.3 138 SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113 THUMB DIVIDE 7980 12.1 14.7 82 13.3 15.4 86 TWO OCEAN PLATEAU 9240 26.7 22.6 118 21.3 22.5 95 WHISKEY CREEK 6800 11.4 14.0 81 14.5 16.7 87 WHITE MILL 8700 17.8 19.7 90 18.8 22.0 85 WOLVERINE 7650 11.7 10.4 112 11.0 10.9 101 ----- ----- Basin wide percent of average 93 96 WIND RIVER BURROUGHS CREEK 8750 12.4 12.4 100 12.7 13.3 95 CASTLE CREEK 8400 6.6 -M * 7.5 -M * COLD SPRINGS 9630 7.0 7.1 99 8.0 8.2 98 DEER PARK 9700 9.9 14.3 69 14.9 17.3 86 HOBBS PARK 10100 12.2 11.7 104 11.5 9.6 120 LITTLE WARM 9370 6.8 9.3 73 8.9 10.6 84 SOUTH PASS 9040 12.0 13.8 87 11.8 14.6 81 ST. LAWRENCE ALT 8620 4.4 5.8 76 6.4 6.8 94 TOGWOTEE PASS 9580 17.7 20.1 88 19.5 20.0 98 TOWNSEND CREEK 8700 7.5 6.8 110 10.1 8.6 117 ----- ----- Basin wide percent of average 89 95 BIGHORN BASIN BALD MTN. 9380 17.2 15.6 110 12.7 13.7 93 BEAR TRAP MEADOW 8200 6.7 4.2 160 7.1 6.2 115 BLACKWATER 9780 20.5 20.1 102 20.2 16.7 121 BONE SPRINGS DIV 9350 17.5 12.8 137 13.5 11.2 121 EVENING STAR 9200 23.5 24.4 96 25.5 21.1 121 GRAVE SPRINGS 8550 7.1 6.9 103 8.4 7.5 112 KIRWIN 9550 10.4 9.0 116 12.3 8.9 138 MARQUETTE 8760 8.0 -M * 10.7 7.3 147 MIDDLE POWDER 7760 8.8 8.7 101 8.9 9.3 96 OWL CREEK 8975 3.9 4.0 98 4.6 4.3 107 POWDER RIVER PASS 9480 10.2 8.5 120 12.1 9.7 125 SHELL CREEK 9580 15.5 11.6 134 13.6 10.6 128 SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113 SYLVAN ROAD 7120 11.3 11.0 103 15.1 15.3 99 TIMBER CREEK 7950 4.3 4.1 105 7.9 5.2 152 YOUNTS PEAK 8350 14.0 14.4 97 13.4 13.2 102 ----- ----- Basin wide percent of average 107 116 SHOSHONE RIVER BLACKWATER 9780 20.5 20.1 102 20.2 16.7 121 EVENING STAR 9200 23.5 24.4 96 25.5 21.1 121 KIRWIN 9550 10.4 9.0 116 12.3 8.9 138 MARQUETTE 8760 8.0 -M * 10.7 7.3 147 SYLVAN LAKE 8420 14.8 18.4 80 19.7 17.4 113 SYLVAN ROAD 7120 11.3 11.0 103 15.1 15.3 99 YOUNTS PEAK 8350 14.0 14.4 97 13.4 13.2 102 ----- ----- Basin wide percent of average 97 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.7 4.2 160 7.1 6.2 115 BIG GOOSE 7990 8.7 7.4 118 12.3 6.6 186 BONE SPRINGS DIV 9350 17.5 12.8 137 13.5 11.2 121 BURGESS JUNCTION 7880 11.1 8.7 128 13.0 9.2 141 CLOUD PEAK RESERVOIR 9860 14.2 9.7 146 12.9 9.5 136 DOME LAKE 8880 12.6 9.3 135 13.2 9.9 133 GRAVE SPRINGS 8550 7.1 6.9 103 8.4 7.5 112 HANSEN SAWMILL 8360 5.2 5.0 104 7.1 6.1 116 LITTLE GOOSE 8870 9.8 -M * 14.3 -M * MIDDLE POWDER 7760 8.8 8.7 101 8.9 9.3 96 POWDER RIVER PASS 9480 10.2 8.5 120 12.1 9.7 125 SOLDIER PARK 8720 10.6 -M * 8.6 -M * SUCKER CREEK 8880 13.1 8.8 149 13.5 10.2 132 TIE CREEK 6870 6.6 4.7 140 12.5 7.7 162 ----- ----- Basin wide percent of average 129 130 BELLE FOURCHE BLIND PARK 6890 7.4 6.5 114 8.3 9.0 92 COLE CANYON 5910 5.5 5.5 100 6.9 5.3 130 NORTH RAPID CREEK 6130 6.8 6.5 105 6.5 7.2 90 ----- ----- Basin wide percent of average 106 101 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 19.2 -M * 20.6 -M * CINNABAR PARK 9574 15.0 15.6 96 18.4 16.8 110 COLUMBINE 9160 16.3 21.1 77 16.7 20.1 83 DIVIDE PEAK 8880 12.7 15.1 84 16.6 16.4 101 ELK RIVER 8700 12.7 15.5 82 13.1 15.5 85 JOE WRIGHT 10120 12.3 16.7 74 16.9 19.4 87 NORTH FRENCH CREEK 10130 17.9 21.8 82 17.7 19.5 91 OLD BATTLE 10000 19.6 25.2 78 22.8 27.3 84 SAGE CREEK BASIN 7850 12.8 8.8 145 9.1 9.5 96 SOUTH BRUSH CREEK 8440 7.4 9.5 78 10.3 12.9 80 TOWER 10500 25.8 36.3 71 26.4 30.8 86 WEBBER SPRINGS 9250 15.0 20.3 74 18.6 21.3 87 WILLOW CREEK PASS 9540 -M 9.3 * 8.1 10.0 81 ----- ----- Basin wide percent of average 81 89 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.9 18.3 87 17.2 16.9 102 CASPER MTN. 7900 17.3 10.9 159 16.8 10.7 157 DEADMAN HILL 10220 15.1 12.5 121 14.2 12.7 112 DEER PARK 9700 9.9 14.3 69 14.9 17.3 86 LAPRELE CREEK 8375 8.6 8.6 100 11.2 9.6 117 RENO HILL 8400 14.6 10.0 146 16.1 11.1 145 ROACH 9700 12.0 13.4 90 14.8 14.2 104 SAND LAKE 10050 21.1 24.1 88 20.7 18.6 111 SOUTH PASS 9040 12.0 13.8 87 11.8 14.6 81 WINDY PEAK 7900 6.8 5.8 117 8.5 8.2 104 ----- ----- Basin wide percent of average 101 109 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.1 9.3 109 10.1 11.9 85 DIVIDE PEAK 8880 12.7 15.1 84 16.6 16.4 101 OLD BATTLE 10000 19.6 25.2 78 22.8 27.3 84 SANDSTONE RS 8150 9.6 12.0 80 10.7 15.1 71 WHISKEY PARK 8950 17.9 22.8 79 21.1 22.7 93 ----- ----- Basin wide percent of average 83 87 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.2 11.7 96 11.3 10.9 104 BLIND BULL SUM 8650 19.2 22.2 86 15.2 18.4 83 EAST RIM DIVIDE 7930 9.8 10.6 92 10.3 9.8 105 ELKHART PARK G.S. 9400 11.2 10.7 105 12.2 10.6 115 GROS VENTRE SUMMIT 8750 8.0 11.1 72 8.5 10.4 82 GUNSIGHT PASS 9820 10.0 -M * 10.8 -M * KENDALL R.S. 7740 13.0 11.9 109 13.8 12.1 114 LOOMIS PARK 8240 12.2 13.9 88 14.4 14.3 101 NEW FORK LAKE 8340 10.0 9.3 108 9.4 9.3 101 POCKET CREEK 9360 8.5 -M * 10.5 -M * SNIDER BASIN 8060 11.2 12.0 93 11.4 13.3 86 SPRING CREEK DIVIDE 9000 19.8 21.3 93 19.8 21.8 91 TRIPLE PEAK 8500 19.7 20.1 98 22.1 19.9 111 ----- ----- Basin wide percent of average 94 98 LOWER GREEN RIVER HAMS FORK 7840 8.7 10.5 83 8.1 10.0 81 HEWINTA 9519 7.1 8.7 82 10.2 11.2 91 HICKERSON PARK 9145 7.8 5.6 139 10.4 6.0 173 HOLE-IN-ROCK 9150 6.9 5.4 128 9.9 5.6 177 INDIAN CREEK 9425 16.9 21.4 79 15.2 20.4 75 KELLEY R.S. 8180 11.3 13.4 84 13.2 16.6 80 STEEL CREEK PARK 10200 -M 12.1 * 11.4 12.4 92 ----- ----- Basin wide percent of average 90 95 UPPER BEAR RIVER BUG LAKE 7950 11.5 16.4 70 12.9 15.6 83 HAYDEN FORK 9212 9.0 12.6 71 13.8 16.5 84 KELLEY R.S. 8180 11.3 13.4 84 13.2 16.6 80 LILY LAKE 9156 7.6 10.4 73 9.5 13.8 69 MONTE CRISTO 8960 15.2 23.6 64 15.5 20.4 76 SALT RIVER SUMMIT 7760 9.5 11.7 81 10.2 15.3 67 TRIAL LAKE 9992 11.0 19.8 56 11.1 19.7 56 ----- ----- Basin wide percent of average 70 73 ----------------------------------------------------------------------------- -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.