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 MONDAY: FEBRUARY 21 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.3 15.1 101 18.3 17.4 105 COTTONWOOD CREEK 7670 20.7 16.9 122 27.8 21.6 129 GRAND TARGHEE 9260 37.4 -M * 26.0 -M * GRANITE CREEK 6770 15.2 15.0 101 17.4 16.3 107 GRASSY LAKE 7265 27.4 27.5 100 30.1 29.2 103 GROS VENTRE SUMMIT 8750 11.7 10.8 108 11.4 10.0 114 GUNSIGHT PASS 9820 13.2 -M * 13.3 -M * LEWIS LAKE DIVIDE 7850 26.0 27.7 94 26.5 29.4 90 PHILLIPS BENCH 8200 23.3 22.3 104 24.3 23.0 106 SALT RIVER SUMMIT 7760 13.0 11.4 114 17.1 14.8 116 SNAKE RIVER STATION 6920 -M 15.4 * -M 18.3 * SPRING CREEK DIVIDE 9000 26.5 20.7 128 26.0 21.2 123 THUMB DIVIDE 7980 15.0 14.2 106 15.3 14.9 103 TOGWOTEE PASS 9580 22.3 19.6 114 23.7 19.4 122 TWO OCEAN PLATEAU 9240 25.1 22.0 114 21.2 21.8 97 WILLOW CREEK 8380 25.8 23.8 108 31.0 25.3 123 ----- ----- Basin wide percent of average 108 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.4 18.9 103 18.8 16.1 117 BLACK BEAR 8170 33.0 31.0 106 32.2 31.0 104 CANYON 7870 12.8 10.8 119 13.9 12.3 113 FISHER CREEK 9100 30.8 28.0 110 29.7 28.7 103 MADISON PLATEAU 7750 20.7 19.6 106 22.7 20.7 110 NORTHEAST ENTRANCE 7350 10.5 9.2 114 12.1 10.2 119 PARKER PEAK 9400 22.1 17.2 128 -M 12.9 * SYLVAN LAKE 8420 18.2 17.9 102 21.4 17.0 126 THUMB DIVIDE 7980 15.0 14.2 106 15.3 14.9 103 TWO OCEAN PLATEAU 9240 25.1 22.0 114 21.2 21.8 97 WHISKEY CREEK 6800 14.7 13.6 108 17.6 16.2 109 WHITE MILL 8700 21.3 19.2 111 21.7 21.3 102 WOLVERINE 7650 12.0 10.2 118 11.4 10.6 108 ----- ----- Basin wide percent of average 110 108 WIND RIVER BURROUGHS CREEK 8750 11.6 12.0 97 12.0 12.9 93 CASTLE CREEK 8400 5.0 -M * 5.6 -M * COLD SPRINGS 9630 6.6 6.9 96 6.4 8.0 80 DEER PARK 9700 15.4 13.9 111 16.9 16.9 100 HOBBS PARK 10100 11.1 11.3 98 9.7 9.3 104 LITTLE WARM 9370 9.1 9.0 101 9.1 10.3 88 SOUTH PASS 9040 13.4 13.4 100 11.6 14.2 82 ST. LAWRENCE ALT 8620 4.1 5.6 73 5.4 6.6 82 TOGWOTEE PASS 9580 22.3 19.6 114 23.7 19.4 122 TOWNSEND CREEK 8700 6.8 6.6 103 8.8 8.4 105 ----- ----- Basin wide percent of average 102 98 BIGHORN BASIN BALD MTN. 9380 18.9 15.2 124 15.3 13.4 114 BEAR TRAP MEADOW 8200 6.0 4.1 146 6.3 6.1 103 BLACKWATER 9780 19.6 19.3 102 19.0 16.3 117 BONE SPRINGS DIV 9350 15.1 12.3 123 12.4 11.0 113 EVENING STAR 9200 24.4 23.6 103 27.2 20.5 133 GRAVE SPRINGS 8550 6.4 6.7 96 6.6 7.2 92 KIRWIN 9550 8.7 8.7 100 9.6 8.7 110 MARQUETTE 8760 1.7 6.6 26 4.8 7.1 68 MIDDLE POWDER 7760 7.3 8.4 87 8.9 9.1 98 OWL CREEK 8975 4.3 3.9 110 4.1 4.2 98 POWDER RIVER PASS 9480 11.2 8.2 137 13.0 9.5 137 SHELL CREEK 9580 13.3 11.2 119 12.0 10.4 115 SYLVAN LAKE 8420 18.2 17.9 102 21.4 17.0 126 SYLVAN ROAD 7120 12.4 10.7 116 16.0 15.0 107 TIMBER CREEK 7950 2.6 4.0 65 3.4 5.1 67 YOUNTS PEAK 8350 13.0 14.0 93 11.3 12.9 88 ----- ----- Basin wide percent of average 105 110 SHOSHONE RIVER BLACKWATER 9780 19.6 19.3 102 19.0 16.3 117 EVENING STAR 9200 24.4 23.6 103 27.2 20.5 133 KIRWIN 9550 8.7 8.7 100 9.6 8.7 110 MARQUETTE 8760 1.7 6.6 26 4.8 7.1 68 SYLVAN LAKE 8420 18.2 17.9 102 21.4 17.0 126 SYLVAN ROAD 7120 12.4 10.7 116 16.0 15.0 107 YOUNTS PEAK 8350 13.0 14.0 93 11.3 12.9 88 ----- ----- Basin wide percent of average 97 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.0 4.1 146 6.3 6.1 103 BIG GOOSE 7990 5.8 7.1 82 7.5 6.4 117 BONE SPRINGS DIV 9350 15.1 12.3 123 12.4 11.0 113 BURGESS JUNCTION 7880 8.6 8.5 101 9.4 9.0 104 CLOUD PEAK RESERVOIR 9860 12.3 9.4 131 11.1 9.3 119 DOME LAKE 8880 9.1 9.1 100 9.9 9.7 102 GRAVE SPRINGS 8550 6.4 6.7 96 6.6 7.2 92 HANSEN SAWMILL 8360 5.0 4.9 102 5.6 6.0 93 LITTLE GOOSE 8870 6.7 -M * 10.7 -M * MIDDLE POWDER 7760 7.3 8.4 87 8.9 9.1 98 POWDER RIVER PASS 9480 11.2 8.2 137 13.0 9.5 137 SOLDIER PARK 8720 5.0 -M * 6.6 -M * SUCKER CREEK 8880 9.9 8.5 116 11.1 9.9 112 TIE CREEK 6870 5.4 4.6 117 7.7 7.5 103 ----- ----- Basin wide percent of average 111 109 BELLE FOURCHE BLIND PARK 6890 8.1 6.3 129 13.7 8.8 156 COLE CANYON 5910 6.6 5.4 122 9.7 5.2 187 NORTH RAPID CREEK 6130 7.7 6.3 122 11.7 7.1 165 ----- ----- Basin wide percent of average 124 166 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.6 15.2 136 21.9 16.4 134 COLUMBINE 9160 26.5 20.4 130 27.7 19.5 142 DIVIDE PEAK 8880 17.2 14.7 117 20.8 15.9 131 ELK RIVER 8700 19.7 15.0 131 21.3 15.0 142 JOE WRIGHT 10120 22.3 16.2 138 27.9 18.8 148 NORTH FRENCH CREEK 10130 34.2 21.2 161 -M 18.9 * OLD BATTLE 10000 32.9 24.3 135 27.8 26.4 105 SAGE CREEK BASIN 7850 16.1 8.5 189 14.9 9.2 162 SOUTH BRUSH CREEK 8440 14.0 9.1 154 17.2 12.6 137 TOWER 10500 43.2 35.3 122 43.7 29.9 146 WEBBER SPRINGS 9250 23.7 19.6 121 28.6 20.7 138 WILLOW CREEK PASS 9540 14.2 9.0 158 13.7 9.7 141 ----- ----- Basin wide percent of average 136 137 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.6 17.8 133 24.0 16.4 146 CASPER MTN. 7900 9.0 10.6 85 11.6 10.3 113 DEADMAN HILL 10220 16.5 12.2 135 17.5 12.3 142 DEER PARK 9700 15.4 13.9 111 16.9 16.9 100 LAPRELE CREEK 8375 9.9 8.3 119 11.1 9.3 119 RENO HILL 8400 11.4 9.7 118 13.2 10.7 123 ROACH 9700 16.4 13.1 125 19.8 13.7 145 SAND LAKE 10050 28.2 23.3 121 26.6 18.1 147 SOUTH PASS 9040 13.4 13.4 100 11.6 14.2 82 WINDY PEAK 7900 8.0 5.6 143 10.4 7.9 132 ----- ----- Basin wide percent of average 119 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.0 * 10.9 11.5 95 DIVIDE PEAK 8880 17.2 14.7 117 20.8 15.9 131 OLD BATTLE 10000 32.9 24.3 135 27.8 26.4 105 SANDSTONE RS 8150 11.5 11.6 99 -M 14.6 * WHISKEY PARK 8950 -M 22.1 * 31.1 22.1 141 ----- ----- Basin wide percent of average 122 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.4 11.3 101 11.8 10.6 111 BLIND BULL SUM 8650 22.1 21.5 103 15.9 17.9 89 EAST RIM DIVIDE 7930 11.6 10.3 113 10.1 9.5 106 ELKHART PARK G.S. 9400 10.1 10.4 97 10.1 10.3 98 GROS VENTRE SUMMIT 8750 11.7 10.8 108 11.4 10.0 114 GUNSIGHT PASS 9820 13.2 -M * 13.3 -M * KENDALL R.S. 7740 9.7 11.5 84 11.5 11.6 99 LOOMIS PARK 8240 14.7 13.4 110 15.7 13.9 113 NEW FORK LAKE 8340 9.7 9.0 108 9.0 9.1 99 POCKET CREEK 9360 8.9 -M * 11.3 -M * SNIDER BASIN 8060 15.6 11.6 134 15.5 12.9 120 SPRING CREEK DIVIDE 9000 26.5 20.7 128 26.0 21.2 123 TRIPLE PEAK 8500 23.4 19.5 120 25.3 19.2 132 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 12.6 10.1 125 12.1 9.8 123 HEWINTA 9519 9.9 8.3 119 13.4 10.8 124 HICKERSON PARK 9145 5.9 5.4 109 7.6 5.9 129 HOLE-IN-ROCK 9150 6.6 5.2 127 8.2 5.4 152 INDIAN CREEK 9425 24.0 20.7 116 22.0 19.7 112 KELLEY R.S. 8180 15.9 12.9 123 18.8 16.2 116 STEEL CREEK PARK 10200 13.6 11.6 117 16.3 12.0 136 ----- ----- Basin wide percent of average 119 123 UPPER BEAR RIVER BUG LAKE 7950 21.8 15.9 137 22.1 15.1 146 HAYDEN FORK 9212 17.7 12.1 146 23.6 15.9 148 KELLEY R.S. 8180 15.9 12.9 123 18.8 16.2 116 LILY LAKE 9156 15.0 10.0 150 17.2 13.3 129 MONTE CRISTO 8960 26.7 22.7 118 26.8 19.7 136 SALT RIVER SUMMIT 7760 13.0 11.4 114 17.1 14.8 116 TRIAL LAKE 9992 27.6 19.1 145 26.7 19.0 141 ----- ----- Basin wide percent of average 132 134 ----------------------------------------------------------------------------- -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.