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 WEDNESDAY: DECEMBER 8 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.7 5.0 134 9.2 7.1 130 COTTONWOOD CREEK 7670 10.1 5.8 174 14.1 9.2 153 GRAND TARGHEE 9260 17.8 -M * 13.3 -M * GRANITE CREEK 6770 6.2 4.4 141 8.7 6.4 136 GRASSY LAKE 7265 10.2 9.2 111 13.5 11.3 119 GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.9 4.8 123 GUNSIGHT PASS 9820 5.9 -M * 6.3 -M * LEWIS LAKE DIVIDE 7850 11.4 9.3 123 13.8 11.7 118 PHILLIPS BENCH 8200 11.0 7.8 141 12.5 8.8 142 SALT RIVER SUMMIT 7760 4.9 3.3 148 8.3 5.8 143 SNAKE RIVER STATION 6920 5.6 5.0 112 10.2 7.5 136 SPRING CREEK DIVIDE 9000 10.6 8.3 128 11.7 8.6 136 THUMB DIVIDE 7980 7.1 4.8 148 8.1 6.3 129 TOGWOTEE PASS 9580 10.6 8.1 131 11.5 8.4 137 TWO OCEAN PLATEAU 9240 13.6 9.5 143 11.0 9.5 116 WILLOW CREEK 8380 10.4 9.2 113 15.4 10.8 143 ----- ----- Basin wide percent of average 132 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 8.6 8.1 106 8.6 6.9 125 BLACK BEAR 8170 13.6 11.5 118 15.4 12.1 127 CANYON 7870 5.5 3.9 141 7.0 5.5 127 FISHER CREEK 9100 11.9 11.2 106 12.8 11.5 111 MADISON PLATEAU 7750 8.4 7.5 112 10.6 8.6 123 NORTHEAST ENTRANCE 7350 3.2 3.2 100 5.5 4.6 120 PARKER PEAK 9400 9.6 7.6 126 10.4 6.2 168 SYLVAN LAKE 8420 7.3 7.4 99 9.9 8.1 122 THUMB DIVIDE 7980 7.1 4.8 148 8.1 6.3 129 TWO OCEAN PLATEAU 9240 13.6 9.5 143 11.0 9.5 116 WHISKEY CREEK 6800 5.2 4.7 111 8.0 6.8 118 WHITE MILL 8700 8.5 7.9 108 9.7 9.0 108 WOLVERINE 7650 4.5 3.7 122 5.4 5.1 106 ----- ----- Basin wide percent of average 118 122 WIND RIVER BURROUGHS CREEK 8750 4.9 4.7 104 5.4 5.6 96 CASTLE CREEK 8400 2.2 -M * 3.0 -M * COLD SPRINGS 9630 3.2 3.5 91 3.3 4.6 72 DEER PARK 9700 8.1 5.0 162 8.8 8.0 110 HOBBS PARK 10100 6.2 6.0 103 5.5 5.0 110 LITTLE WARM 9370 4.2 3.9 108 4.3 5.1 84 SOUTH PASS 9040 6.3 5.8 109 6.2 6.8 91 ST. LAWRENCE ALT 8620 2.1 2.9 72 2.9 3.8 76 TOGWOTEE PASS 9580 10.6 8.1 131 11.5 8.4 137 TOWNSEND CREEK 8700 3.5 3.2 109 5.3 4.9 108 ----- ----- Basin wide percent of average 114 102 BIGHORN BASIN BALD MTN. 9380 6.9 6.8 101 6.6 6.0 110 BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.7 81 BLACKWATER 9780 9.4 9.1 103 9.0 8.2 110 BONE SPRINGS DIV 9350 5.2 5.9 88 4.4 5.4 81 EVENING STAR 9200 9.9 9.9 100 11.5 9.3 124 GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85 KIRWIN 9550 5.1 4.7 109 5.4 4.6 117 MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59 MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.4 52 OWL CREEK 8975 1.6 2.1 76 2.0 2.4 83 POWDER RIVER PASS 9480 4.1 3.8 108 5.0 4.6 109 SHELL CREEK 9580 5.0 5.5 91 4.4 5.0 88 SYLVAN LAKE 8420 7.3 7.4 99 9.9 8.1 122 SYLVAN ROAD 7120 4.2 4.3 98 6.8 7.6 89 TIMBER CREEK 7950 1.7 2.5 68 2.2 3.2 69 YOUNTS PEAK 8350 6.5 5.6 116 6.0 5.9 102 ----- ----- Basin wide percent of average 96 97 SHOSHONE RIVER BLACKWATER 9780 9.4 9.1 103 9.0 8.2 110 EVENING STAR 9200 9.9 9.9 100 11.5 9.3 124 KIRWIN 9550 5.1 4.7 109 5.4 4.6 117 MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59 SYLVAN LAKE 8420 7.3 7.4 99 9.9 8.1 122 SYLVAN ROAD 7120 4.2 4.3 98 6.8 7.6 89 YOUNTS PEAK 8350 6.5 5.6 116 6.0 5.9 102 ----- ----- Basin wide percent of average 97 106 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.7 81 BIG GOOSE 7990 1.6 2.8 57 3.3 3.4 97 BONE SPRINGS DIV 9350 5.2 5.9 88 4.4 5.4 81 BURGESS JUNCTION 7880 2.5 3.8 66 3.9 4.6 85 CLOUD PEAK RESERVOIR 9860 4.8 4.2 114 5.6 5.3 106 DOME LAKE 8880 2.2 4.6 48 4.3 5.4 80 GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85 HANSEN SAWMILL 8360 1.5 2.3 65 2.0 3.5 57 LITTLE GOOSE 8870 2.2 -M * 5.7 -M * MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.4 52 POWDER RIVER PASS 9480 4.1 3.8 108 5.0 4.6 109 SOLDIER PARK 8720 1.1 -M * 2.7 -M * SUCKER CREEK 8880 3.5 3.5 100 3.9 5.0 78 TIE CREEK 6870 1.5 1.3 115 3.1 4.0 78 ----- ----- Basin wide percent of average 87 82 BELLE FOURCHE BLIND PARK 6890 1.4 2.2 64 6.7 4.8 140 COLE CANYON 5910 2.2 2.3 96 4.2 3.2 131 NORTH RAPID CREEK 6130 2.1 2.0 105 5.9 4.1 144 ----- ----- Basin wide percent of average 88 139 UPPER N. PLATTE RIVER COLUMBINE 9160 9.4 6.0 157 12.7 7.5 169 DIVIDE PEAK 8880 6.8 6.0 113 10.3 7.1 145 ELK RIVER 8700 5.6 3.9 144 9.0 6.0 150 JOE WRIGHT 10120 10.6 7.0 151 15.3 8.7 176 NORTH FRENCH CREEK 10130 14.8 9.1 163 15.4 8.5 181 OLD BATTLE 10000 13.2 10.4 127 15.2 10.8 141 SAGE CREEK BASIN 7850 4.0 3.5 114 7.1 4.1 173 SOUTH BRUSH CREEK 8440 6.4 3.4 188 9.6 5.8 166 TOWER 10500 18.0 14.5 124 20.2 12.3 164 WEBBER SPRINGS 9250 8.6 7.8 110 12.8 9.0 142 WILLOW CREEK PASS 9540 6.3 4.1 154 7.5 4.9 153 ----- ----- Basin wide percent of average 137 160 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.1 7.0 130 10.8 7.1 152 CASPER MTN. 7900 3.4 5.2 65 6.2 5.8 107 DEADMAN HILL 10220 5.3 5.6 95 10.2 5.9 173 DEER PARK 9700 8.1 5.0 162 8.8 8.0 110 LAPRELE CREEK 8375 3.2 3.7 86 4.7 4.7 100 RENO HILL 8400 4.6 4.8 96 6.5 5.6 116 ROACH 9700 6.7 5.0 134 9.2 6.0 153 SAND LAKE 10050 13.4 10.6 126 13.1 8.2 160 SOUTH PASS 9040 6.3 5.8 109 6.2 6.8 91 WINDY PEAK 7900 2.5 2.6 96 4.9 4.2 117 ----- ----- Basin wide percent of average 113 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.4 2.2 155 5.7 5.0 114 DIVIDE PEAK 8880 6.8 6.0 113 10.3 7.1 145 OLD BATTLE 10000 13.2 10.4 127 15.2 10.8 141 SANDSTONE RS 8150 2.8 2.9 97 8.9 6.2 144 WHISKEY PARK 8950 -M 7.2 * 13.3 9.1 146 ----- ----- Basin wide percent of average 122 140 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.7 4.7 100 5.6 4.8 117 BLIND BULL SUM 8650 9.1 8.5 107 6.7 7.6 88 EAST RIM DIVIDE 7930 3.6 3.8 95 4.1 4.0 103 ELKHART PARK G.S. 9400 3.4 4.2 81 4.3 4.9 88 GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.9 4.8 123 GUNSIGHT PASS 9820 5.9 -M * 6.3 -M * KENDALL R.S. 7740 3.3 4.0 83 5.2 4.7 111 LOOMIS PARK 8240 5.6 5.3 106 6.5 5.7 114 NEW FORK LAKE 8340 3.5 3.4 103 3.6 4.3 84 POCKET CREEK 9360 4.1 -M * 5.3 -M * SNIDER BASIN 8060 6.3 4.4 143 7.3 5.2 140 SPRING CREEK DIVIDE 9000 10.6 8.3 128 11.7 8.6 136 TRIPLE PEAK 8500 9.4 7.6 124 11.5 7.6 151 ----- ----- Basin wide percent of average 111 116 LOWER GREEN RIVER HAMS FORK 7840 4.2 3.1 135 5.6 4.0 140 HEWINTA 9519 2.1 2.5 84 6.1 5.5 111 HICKERSON PARK 9145 1.2 1.8 67 3.2 3.5 91 HOLE-IN-ROCK 9150 1.3 1.7 76 3.7 3.2 116 INDIAN CREEK 9425 10.9 8.0 136 10.7 8.1 132 KELLEY R.S. 8180 6.8 5.0 136 9.3 6.7 139 STEEL CREEK PARK 10200 4.2 4.6 91 7.4 5.7 130 ----- ----- Basin wide percent of average 115 125 UPPER BEAR RIVER BUG LAKE 7950 7.7 4.9 157 10.6 6.6 161 HAYDEN FORK 9212 5.0 3.7 135 11.2 7.1 158 KELLEY R.S. 8180 6.8 5.0 136 9.3 6.7 139 LILY LAKE 9156 5.2 3.5 149 8.5 6.4 133 MONTE CRISTO 8960 10.5 6.4 164 13.2 8.4 157 SALT RIVER SUMMIT 7760 4.9 3.3 148 8.3 5.8 143 TRIAL LAKE 9992 10.2 6.7 152 12.4 7.7 161 ----- ----- Basin wide percent of average 150 151 ----------------------------------------------------------------------------- -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.