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 1 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.7 4.1 115 7.5 6.1 123 COTTONWOOD CREEK 7670 8.3 4.7 177 12.2 8.0 153 GRAND TARGHEE 9260 15.0 -M * 11.3 -M * GRANITE CREEK 6770 4.1 3.4 121 6.7 5.4 124 GRASSY LAKE 7265 7.3 7.7 95 10.6 9.6 110 GROS VENTRE SUMMIT 8750 4.8 3.9 123 5.2 4.3 121 GUNSIGHT PASS 9820 5.0 -M * 5.4 -M * LEWIS LAKE DIVIDE 7850 8.1 7.7 105 10.8 9.9 109 PHILLIPS BENCH 8200 9.2 6.4 144 10.6 7.4 143 SALT RIVER SUMMIT 7760 4.0 2.6 154 7.3 5.0 146 SNAKE RIVER STATION 6920 3.9 4.0 98 8.2 6.4 128 SPRING CREEK DIVIDE 9000 8.4 6.8 124 9.6 7.3 132 THUMB DIVIDE 7980 5.8 4.0 145 6.8 5.4 126 TOGWOTEE PASS 9580 8.8 7.0 126 9.8 7.3 134 TWO OCEAN PLATEAU 9240 10.8 8.3 130 8.8 8.2 107 WILLOW CREEK 8380 8.5 7.7 110 13.5 9.4 144 ----- ----- Basin wide percent of average 123 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 6.8 7.0 97 6.9 5.9 117 BLACK BEAR 8170 11.3 9.6 118 13.2 10.5 126 CANYON 7870 4.2 3.2 131 5.7 4.8 119 FISHER CREEK 9100 9.6 9.1 105 10.5 9.8 107 MADISON PLATEAU 7750 7.2 6.1 118 9.2 7.2 128 NORTHEAST ENTRANCE 7350 2.7 2.5 108 4.9 4.0 123 PARKER PEAK 9400 7.6 6.7 113 8.6 5.5 156 SYLVAN LAKE 8420 5.7 6.4 89 8.2 7.1 115 THUMB DIVIDE 7980 5.8 4.0 145 6.8 5.4 126 TWO OCEAN PLATEAU 9240 10.8 8.3 130 8.8 8.2 107 WHISKEY CREEK 6800 4.3 3.8 113 7.2 5.9 122 WHITE MILL 8700 6.8 6.6 103 8.0 7.7 104 WOLVERINE 7650 3.6 3.0 120 4.5 4.5 100 ----- ----- Basin wide percent of average 113 118 WIND RIVER BURROUGHS CREEK 8750 3.3 3.8 87 3.9 4.9 80 CASTLE CREEK 8400 1.7 -M * 2.4 -M * COLD SPRINGS 9630 2.7 3.1 87 3.1 4.2 74 DEER PARK 9700 6.6 4.5 147 7.3 7.1 103 HOBBS PARK 10100 5.4 5.3 102 5.0 4.6 109 LITTLE WARM 9370 3.6 3.4 106 3.6 4.6 78 SOUTH PASS 9040 5.0 4.9 102 5.0 6.0 83 ST. LAWRENCE ALT 8620 1.9 2.7 70 2.7 3.5 77 TOGWOTEE PASS 9580 8.8 7.0 126 9.8 7.3 134 TOWNSEND CREEK 8700 3.2 3.0 107 5.2 4.5 116 ----- ----- Basin wide percent of average 107 98 BIGHORN BASIN BALD MTN. 9380 6.8 5.9 115 6.3 5.3 119 BEAR TRAP MEADOW 8200 1.4 1.6 88 2.7 3.4 79 BLACKWATER 9780 7.6 7.8 97 7.3 7.2 101 BONE SPRINGS DIV 9350 5.0 5.3 94 4.1 4.9 84 EVENING STAR 9200 7.7 8.5 91 9.1 8.2 111 GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89 KIRWIN 9550 3.9 4.2 93 4.3 4.1 105 MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61 MIDDLE POWDER 7760 3.6 3.5 103 2.9 4.9 59 OWL CREEK 8975 1.4 1.9 74 1.9 2.2 86 POWDER RIVER PASS 9480 3.8 3.3 115 4.8 4.1 117 SHELL CREEK 9580 4.8 5.1 94 4.6 4.5 102 SYLVAN LAKE 8420 5.7 6.4 89 8.2 7.1 115 SYLVAN ROAD 7120 3.2 3.5 91 5.8 6.6 88 TIMBER CREEK 7950 1.5 2.3 65 1.9 3.0 63 YOUNTS PEAK 8350 5.0 4.7 106 4.6 5.2 88 ----- ----- Basin wide percent of average 92 95 SHOSHONE RIVER BLACKWATER 9780 7.6 7.8 97 7.3 7.2 101 EVENING STAR 9200 7.7 8.5 91 9.1 8.2 111 KIRWIN 9550 3.9 4.2 93 4.3 4.1 105 MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61 SYLVAN LAKE 8420 5.7 6.4 89 8.2 7.1 115 SYLVAN ROAD 7120 3.2 3.5 91 5.8 6.6 88 YOUNTS PEAK 8350 5.0 4.7 106 4.6 5.2 88 ----- ----- Basin wide percent of average 88 98 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.4 1.6 88 2.7 3.4 79 BIG GOOSE 7990 1.5 2.3 65 3.2 3.0 107 BONE SPRINGS DIV 9350 5.0 5.3 94 4.1 4.9 84 BURGESS JUNCTION 7880 2.4 3.5 69 3.9 4.2 93 CLOUD PEAK RESERVOIR 9860 4.5 3.8 118 5.2 4.9 106 DOME LAKE 8880 1.9 4.1 46 4.0 4.9 82 GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89 HANSEN SAWMILL 8360 1.4 2.0 70 1.9 3.2 59 LITTLE GOOSE 8870 1.9 -M * 5.4 -M * MIDDLE POWDER 7760 3.6 3.5 103 2.9 4.9 59 POWDER RIVER PASS 9480 3.8 3.3 115 4.8 4.1 117 SOLDIER PARK 8720 1.2 -M * 2.6 -M * SUCKER CREEK 8880 3.3 3.2 103 3.8 4.5 84 TIE CREEK 6870 1.5 1.2 125 3.0 3.7 81 ----- ----- Basin wide percent of average 90 87 BELLE FOURCHE BLIND PARK 6890 1.4 2.0 70 6.6 4.5 147 COLE CANYON 5910 2.3 2.1 110 4.1 3.0 137 NORTH RAPID CREEK 6130 2.0 1.7 118 5.6 3.8 147 ----- ----- Basin wide percent of average 98 144 UPPER N. PLATTE RIVER COLUMBINE 9160 8.5 5.0 170 11.7 6.4 183 DIVIDE PEAK 8880 4.9 5.1 96 8.3 6.2 134 ELK RIVER 8700 4.7 3.1 152 8.1 5.2 156 JOE WRIGHT 10120 9.4 6.3 149 14.0 7.7 182 NORTH FRENCH CREEK 10130 11.1 7.9 141 11.8 7.5 157 OLD BATTLE 10000 10.5 9.0 117 12.4 9.3 133 SAGE CREEK BASIN 7850 2.9 3.0 97 6.0 3.6 167 SOUTH BRUSH CREEK 8440 4.9 2.9 169 7.9 5.2 152 TOWER 10500 15.7 12.6 125 18.0 10.6 170 WEBBER SPRINGS 9250 6.8 6.6 103 10.9 7.8 140 WILLOW CREEK PASS 9540 6.2 3.6 172 7.2 4.4 164 ----- ----- Basin wide percent of average 131 157 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.6 6.0 110 8.5 6.2 137 CASPER MTN. 7900 3.0 4.6 65 5.9 5.2 113 DEADMAN HILL 10220 5.5 5.0 110 9.5 5.3 179 DEER PARK 9700 6.6 4.5 147 7.3 7.1 103 LAPRELE CREEK 8375 2.6 3.2 81 4.2 4.3 98 RENO HILL 8400 4.2 4.3 98 6.1 5.1 120 ROACH 9700 6.1 4.3 142 8.6 5.2 165 SAND LAKE 10050 11.2 9.2 122 11.0 7.2 153 SOUTH PASS 9040 5.0 4.9 102 5.0 6.0 83 WINDY PEAK 7900 2.2 2.3 96 4.6 3.7 124 ----- ----- Basin wide percent of average 110 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.7 1.9 142 5.4 4.4 123 DIVIDE PEAK 8880 4.9 5.1 96 8.3 6.2 134 OLD BATTLE 10000 10.5 9.0 117 12.4 9.3 133 SANDSTONE RS 8150 2.0 2.4 83 7.6 5.5 138 WHISKEY PARK 8950 4.8 6.1 79 11.2 7.8 144 ----- ----- Basin wide percent of average 102 135 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.1 4.0 103 5.0 4.3 116 BLIND BULL SUM 8650 7.2 7.1 101 5.2 6.4 81 EAST RIM DIVIDE 7930 2.9 3.2 91 3.5 3.5 100 ELKHART PARK G.S. 9400 2.8 3.5 80 3.7 4.4 84 GROS VENTRE SUMMIT 8750 4.8 3.9 123 5.2 4.3 121 GUNSIGHT PASS 9820 5.0 -M * 5.4 -M * KENDALL R.S. 7740 2.3 3.2 72 4.2 4.1 102 LOOMIS PARK 8240 4.4 4.4 100 5.4 4.9 110 NEW FORK LAKE 8340 3.0 2.8 107 3.3 3.8 87 POCKET CREEK 9360 3.7 -M * 4.6 -M * SNIDER BASIN 8060 5.1 3.6 142 6.2 4.5 138 SPRING CREEK DIVIDE 9000 8.4 6.8 124 9.6 7.3 132 TRIPLE PEAK 8500 7.2 6.3 114 9.4 6.5 145 ----- ----- Basin wide percent of average 107 112 LOWER GREEN RIVER HAMS FORK 7840 3.2 2.5 128 5.0 3.5 143 HEWINTA 9519 1.2 2.2 55 5.7 4.9 116 HICKERSON PARK 9145 1.2 1.5 80 3.3 3.2 103 HOLE-IN-ROCK 9150 1.9 1.5 127 3.6 3.0 120 INDIAN CREEK 9425 8.6 6.7 128 8.7 7.0 124 KELLEY R.S. 8180 5.5 4.2 131 7.8 5.7 137 STEEL CREEK PARK 10200 3.5 4.0 88 6.8 5.2 131 ----- ----- Basin wide percent of average 111 126 UPPER BEAR RIVER BUG LAKE 7950 6.0 4.1 146 9.1 5.7 160 HAYDEN FORK 9212 4.2 3.1 135 10.3 6.1 169 KELLEY R.S. 8180 5.5 4.2 131 7.8 5.7 137 LILY LAKE 9156 4.3 2.9 148 7.9 5.7 139 MONTE CRISTO 8960 8.9 5.2 171 11.8 7.3 162 SALT RIVER SUMMIT 7760 4.0 2.6 154 7.3 5.0 146 TRIAL LAKE 9992 9.3 5.6 166 11.5 6.7 172 ----- ----- Basin wide percent of average 152 156 ----------------------------------------------------------------------------- -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.