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 THURSDAY: DECEMBER 16 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.1 6.1 133 10.9 8.3 131 COTTONWOOD CREEK 7670 11.9 7.1 168 16.1 10.6 152 GRAND TARGHEE 9260 20.6 -M * 15.6 -M * GRANITE CREEK 6770 7.5 5.4 139 10.0 7.4 135 GRASSY LAKE 7265 13.0 11.0 118 16.1 13.3 121 GROS VENTRE SUMMIT 8750 6.8 5.4 126 6.7 5.3 126 GUNSIGHT PASS 9820 7.2 -M * 7.6 -M * LEWIS LAKE DIVIDE 7850 14.5 11.1 131 16.5 13.7 120 PHILLIPS BENCH 8200 12.9 9.5 136 14.3 10.4 138 SALT RIVER SUMMIT 7760 6.1 4.0 153 9.6 6.9 139 SNAKE RIVER STATION 6920 6.6 5.9 112 11.9 8.7 137 SPRING CREEK DIVIDE 9000 12.9 9.8 132 13.7 10.1 136 THUMB DIVIDE 7980 8.7 5.8 150 9.6 7.2 133 TOGWOTEE PASS 9580 12.8 9.2 139 13.8 9.6 144 TWO OCEAN PLATEAU 9240 16.6 10.9 152 13.6 10.9 125 WILLOW CREEK 8380 12.8 10.9 117 17.8 12.4 144 ----- ----- Basin wide percent of average 135 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.6 9.3 114 10.4 8.0 130 BLACK BEAR 8170 17.1 13.5 127 18.3 13.9 132 CANYON 7870 6.6 4.6 143 7.8 6.2 126 FISHER CREEK 9100 15.0 12.9 116 15.3 13.4 114 MADISON PLATEAU 7750 10.8 8.8 123 12.8 10.0 128 NORTHEAST ENTRANCE 7350 4.4 3.7 119 6.7 5.2 129 PARKER PEAK 9400 11.8 8.6 137 -M 6.9 * SYLVAN LAKE 8420 9.5 8.5 112 12.3 9.2 134 THUMB DIVIDE 7980 8.7 5.8 150 9.6 7.2 133 TWO OCEAN PLATEAU 9240 16.6 10.9 152 13.6 10.9 125 WHISKEY CREEK 6800 6.9 5.7 121 9.6 7.9 122 WHITE MILL 8700 10.8 9.1 119 11.7 10.4 113 WOLVERINE 7650 6.1 4.3 142 6.1 5.8 105 ----- ----- Basin wide percent of average 128 124 WIND RIVER BURROUGHS CREEK 8750 6.3 5.3 119 6.8 6.4 106 CASTLE CREEK 8400 2.4 -M * 2.9 -M * COLD SPRINGS 9630 3.5 3.9 90 3.6 5.0 72 DEER PARK 9700 8.8 5.6 157 9.6 9.0 107 HOBBS PARK 10100 6.6 6.6 100 5.8 5.5 105 LITTLE WARM 9370 5.2 4.3 121 5.1 5.6 91 SOUTH PASS 9040 6.9 6.8 101 6.3 7.7 82 ST. LAWRENCE ALT 8620 1.9 3.3 58 3.0 4.1 73 TOGWOTEE PASS 9580 12.8 9.2 139 13.8 9.6 144 TOWNSEND CREEK 8700 3.5 3.7 95 5.5 5.3 104 ----- ----- Basin wide percent of average 114 102 BIGHORN BASIN BALD MTN. 9380 8.9 7.8 114 7.5 6.8 110 BEAR TRAP MEADOW 8200 2.4 2.1 114 3.2 4.0 80 BLACKWATER 9780 11.9 10.0 119 11.1 9.2 121 BONE SPRINGS DIV 9350 6.4 6.5 98 4.9 6.0 82 EVENING STAR 9200 13.1 11.2 117 14.5 10.6 137 GRAVE SPRINGS 8550 3.1 3.1 100 3.7 4.2 88 KIRWIN 9550 5.6 5.1 110 5.9 5.0 118 MARQUETTE 8760 1.2 4.3 28 2.8 4.7 60 MIDDLE POWDER 7760 4.7 4.6 102 3.0 5.8 52 OWL CREEK 8975 1.6 2.3 70 1.9 2.6 73 POWDER RIVER PASS 9480 5.2 4.3 121 5.9 5.0 118 SHELL CREEK 9580 6.3 6.1 103 5.5 5.6 98 SYLVAN LAKE 8420 9.5 8.5 112 12.3 9.2 134 SYLVAN ROAD 7120 6.3 5.0 126 8.9 8.6 103 TIMBER CREEK 7950 1.6 2.6 62 2.2 3.4 65 YOUNTS PEAK 8350 7.7 6.3 122 7.0 6.6 106 ----- ----- Basin wide percent of average 106 103 SHOSHONE RIVER BLACKWATER 9780 11.9 10.0 119 11.1 9.2 121 EVENING STAR 9200 13.1 11.2 117 14.5 10.6 137 KIRWIN 9550 5.6 5.1 110 5.9 5.0 118 MARQUETTE 8760 1.2 4.3 28 2.8 4.7 60 SYLVAN LAKE 8420 9.5 8.5 112 12.3 9.2 134 SYLVAN ROAD 7120 6.3 5.0 126 8.9 8.6 103 YOUNTS PEAK 8350 7.7 6.3 122 7.0 6.6 106 ----- ----- Basin wide percent of average 110 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.4 2.1 114 3.2 4.0 80 BIG GOOSE 7990 2.2 3.4 65 3.7 3.9 95 BONE SPRINGS DIV 9350 6.4 6.5 98 4.9 6.0 82 BURGESS JUNCTION 7880 3.1 4.4 70 4.4 5.1 86 CLOUD PEAK RESERVOIR 9860 5.8 4.7 123 5.6 5.6 100 DOME LAKE 8880 2.8 5.0 56 5.0 5.9 85 GRAVE SPRINGS 8550 3.1 3.1 100 3.7 4.2 88 HANSEN SAWMILL 8360 1.8 2.6 69 2.5 3.7 68 LITTLE GOOSE 8870 2.9 -M * 6.4 -M * MIDDLE POWDER 7760 4.7 4.6 102 3.0 5.8 52 POWDER RIVER PASS 9480 5.2 4.3 121 5.9 5.0 118 SOLDIER PARK 8720 1.4 -M * 3.2 -M * SUCKER CREEK 8880 4.4 4.1 107 4.6 5.6 82 TIE CREEK 6870 1.9 1.5 127 3.5 4.4 80 ----- ----- Basin wide percent of average 95 84 BELLE FOURCHE BLIND PARK 6890 2.0 2.5 80 7.3 5.3 138 COLE CANYON 5910 2.2 2.7 81 4.5 3.4 132 NORTH RAPID CREEK 6130 2.5 2.5 100 6.2 4.5 138 ----- ----- Basin wide percent of average 87 136 UPPER N. PLATTE RIVER COLUMBINE 9160 11.3 7.3 155 14.4 8.9 162 DIVIDE PEAK 8880 7.3 7.0 104 10.8 8.1 133 ELK RIVER 8700 6.5 4.9 133 9.8 7.0 140 JOE WRIGHT 10120 11.4 7.9 144 16.3 9.8 166 NORTH FRENCH CREEK 10130 16.0 10.5 152 16.1 9.7 166 OLD BATTLE 10000 14.9 11.9 125 16.6 12.6 132 SAGE CREEK BASIN 7850 4.2 4.1 102 7.5 4.7 160 SOUTH BRUSH CREEK 8440 6.8 4.0 170 10.0 6.4 156 TOWER 10500 20.5 16.6 123 22.5 14.2 158 WEBBER SPRINGS 9250 9.7 9.1 107 13.9 10.3 135 WILLOW CREEK PASS 9540 7.2 4.6 157 8.1 5.4 150 ----- ----- Basin wide percent of average 132 150 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 8.3 120 11.6 8.1 143 CASPER MTN. 7900 4.2 5.8 72 7.0 6.3 111 DEADMAN HILL 10220 7.1 6.3 113 10.8 6.5 166 DEER PARK 9700 8.8 5.6 157 9.6 9.0 107 LAPRELE CREEK 8375 3.6 4.3 84 5.0 5.1 98 RENO HILL 8400 5.2 5.5 95 7.0 6.1 115 ROACH 9700 7.4 5.7 130 9.9 6.8 146 SAND LAKE 10050 14.3 12.1 118 13.7 9.3 147 SOUTH PASS 9040 6.9 6.8 101 6.3 7.7 82 WINDY PEAK 7900 2.8 3.0 93 5.3 4.6 115 ----- ----- Basin wide percent of average 111 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.9 2.7 144 6.0 5.7 105 DIVIDE PEAK 8880 7.3 7.0 104 10.8 8.1 133 OLD BATTLE 10000 14.9 11.9 125 16.6 12.6 132 SANDSTONE RS 8150 3.3 3.6 92 9.6 7.1 135 WHISKEY PARK 8950 -M 8.3 * 14.7 10.4 141 ----- ----- Basin wide percent of average 117 131 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.3 5.5 96 6.1 5.4 113 BLIND BULL SUM 8650 11.1 10.1 110 8.0 8.8 91 EAST RIM DIVIDE 7930 4.4 4.6 96 4.9 4.6 107 ELKHART PARK G.S. 9400 4.4 4.9 90 5.1 5.5 93 GROS VENTRE SUMMIT 8750 6.8 5.4 126 6.7 5.3 126 GUNSIGHT PASS 9820 7.2 -M * 7.6 -M * KENDALL R.S. 7740 4.2 4.9 86 6.2 5.4 115 LOOMIS PARK 8240 6.9 6.2 111 7.8 6.6 118 NEW FORK LAKE 8340 4.2 4.1 102 4.3 4.8 90 POCKET CREEK 9360 4.6 -M * 5.8 -M * SNIDER BASIN 8060 7.5 5.3 142 8.2 6.1 134 SPRING CREEK DIVIDE 9000 12.9 9.8 132 13.7 10.1 136 TRIPLE PEAK 8500 11.4 9.1 125 13.4 8.8 152 ----- ----- Basin wide percent of average 113 118 LOWER GREEN RIVER HAMS FORK 7840 4.8 3.9 123 6.2 4.6 135 HEWINTA 9519 2.8 3.0 93 6.7 6.0 112 HICKERSON PARK 9145 1.0 2.1 48 2.9 3.7 78 HOLE-IN-ROCK 9150 1.3 2.0 65 3.9 3.4 115 INDIAN CREEK 9425 12.7 9.6 132 12.1 9.5 127 KELLEY R.S. 8180 8.0 6.0 133 10.2 7.8 131 STEEL CREEK PARK 10200 4.9 5.3 92 8.3 6.3 132 ----- ----- Basin wide percent of average 111 122 UPPER BEAR RIVER BUG LAKE 7950 9.4 6.0 157 12.2 7.5 163 HAYDEN FORK 9212 5.8 4.5 129 12.4 8.0 155 KELLEY R.S. 8180 8.0 6.0 133 10.2 7.8 131 LILY LAKE 9156 6.2 4.1 151 9.5 7.2 132 MONTE CRISTO 8960 12.5 7.8 160 15.0 9.7 155 SALT RIVER SUMMIT 7760 6.1 4.0 153 9.6 6.9 139 TRIAL LAKE 9992 11.7 7.9 148 13.7 8.9 154 ----- ----- Basin wide percent of average 148 148 ----------------------------------------------------------------------------- -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.