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 TUESDAY: DECEMBER 21 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.3 6.7 139 12.2 8.9 137 COTTONWOOD CREEK 7670 13.6 7.9 172 18.1 11.5 157 GRAND TARGHEE 9260 22.3 -M * 16.5 -M * GRANITE CREEK 6770 9.5 6.1 156 12.0 8.1 148 GRASSY LAKE 7265 14.2 12.1 117 17.4 14.5 120 GROS VENTRE SUMMIT 8750 8.0 5.9 136 8.0 5.7 140 GUNSIGHT PASS 9820 8.5 -M * 8.8 -M * LEWIS LAKE DIVIDE 7850 16.1 12.2 132 18.1 14.9 121 PHILLIPS BENCH 8200 14.7 10.5 140 16.0 11.3 142 SALT RIVER SUMMIT 7760 7.5 4.4 170 11.2 7.5 149 SNAKE RIVER STATION 6920 7.3 6.5 112 13.0 9.5 137 SPRING CREEK DIVIDE 9000 15.2 10.7 142 16.0 10.9 147 THUMB DIVIDE 7980 10.1 6.3 160 10.9 7.8 140 TOGWOTEE PASS 9580 14.1 10.0 141 15.2 10.3 148 TWO OCEAN PLATEAU 9240 18.0 11.7 154 14.6 11.7 125 WILLOW CREEK 8380 14.8 12.0 123 19.9 13.3 150 ----- ----- Basin wide percent of average 140 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.7 9.9 118 11.3 8.7 130 BLACK BEAR 8170 18.6 14.6 127 19.7 15.0 131 CANYON 7870 7.2 5.1 141 8.6 6.7 128 FISHER CREEK 9100 16.6 13.9 119 16.8 14.5 116 MADISON PLATEAU 7750 12.0 9.4 128 14.0 10.7 131 NORTHEAST ENTRANCE 7350 5.2 4.1 127 7.4 5.6 132 PARKER PEAK 9400 12.9 9.1 142 13.1 7.3 179 SYLVAN LAKE 8420 10.7 9.2 116 13.6 9.8 139 THUMB DIVIDE 7980 10.1 6.3 160 10.9 7.8 140 TWO OCEAN PLATEAU 9240 18.0 11.7 154 14.6 11.7 125 WHISKEY CREEK 6800 8.0 6.2 129 10.3 8.5 121 WHITE MILL 8700 12.0 9.7 124 13.0 11.2 116 WOLVERINE 7650 7.0 4.7 149 7.0 6.2 113 ----- ----- Basin wide percent of average 132 130 WIND RIVER BURROUGHS CREEK 8750 7.5 5.7 132 7.9 6.9 114 CASTLE CREEK 8400 3.2 -M * 3.9 -M * COLD SPRINGS 9630 4.4 4.1 107 4.2 5.2 81 DEER PARK 9700 10.7 5.9 181 11.6 9.6 121 HOBBS PARK 10100 7.7 6.9 112 6.9 5.8 119 LITTLE WARM 9370 6.2 4.6 135 6.3 6.0 105 SOUTH PASS 9040 8.7 7.1 123 7.9 8.2 96 ST. LAWRENCE ALT 8620 2.7 3.4 79 3.6 4.3 84 TOGWOTEE PASS 9580 14.1 10.0 141 15.2 10.3 148 TOWNSEND CREEK 8700 4.2 3.9 108 6.0 5.5 109 ----- ----- Basin wide percent of average 128 113 BIGHORN BASIN BALD MTN. 9380 9.5 8.4 113 8.5 7.3 116 BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88 BLACKWATER 9780 13.2 10.6 125 12.4 9.7 128 BONE SPRINGS DIV 9350 7.0 6.9 101 6.5 6.4 102 EVENING STAR 9200 14.7 11.9 124 15.9 11.3 141 GRAVE SPRINGS 8550 3.3 3.5 94 3.8 4.4 86 KIRWIN 9550 6.4 5.3 121 6.8 5.3 128 MARQUETTE 8760 1.3 4.5 29 3.1 4.9 63 MIDDLE POWDER 7760 4.8 5.0 96 3.2 6.2 52 OWL CREEK 8975 2.1 2.4 88 2.4 2.7 89 POWDER RIVER PASS 9480 5.7 4.5 127 6.4 5.3 121 SHELL CREEK 9580 6.5 6.5 100 5.7 5.9 97 SYLVAN LAKE 8420 10.7 9.2 116 13.6 9.8 139 SYLVAN ROAD 7120 7.5 5.3 142 10.2 9.1 112 TIMBER CREEK 7950 1.9 2.8 68 2.4 3.5 69 YOUNTS PEAK 8350 8.6 6.7 128 7.9 7.1 111 ----- ----- Basin wide percent of average 111 109 SHOSHONE RIVER BLACKWATER 9780 13.2 10.6 125 12.4 9.7 128 EVENING STAR 9200 14.7 11.9 124 15.9 11.3 141 KIRWIN 9550 6.4 5.3 121 6.8 5.3 128 MARQUETTE 8760 1.3 4.5 29 3.1 4.9 63 SYLVAN LAKE 8420 10.7 9.2 116 13.6 9.8 139 SYLVAN ROAD 7120 7.5 5.3 142 10.2 9.1 112 YOUNTS PEAK 8350 8.6 6.7 128 7.9 7.1 111 ----- ----- Basin wide percent of average 117 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88 BIG GOOSE 7990 -M 3.7 * 4.0 4.1 98 BONE SPRINGS DIV 9350 7.0 6.9 101 6.5 6.4 102 BURGESS JUNCTION 7880 3.2 4.8 67 4.6 5.4 85 CLOUD PEAK RESERVOIR 9860 6.3 5.0 126 6.5 5.9 110 DOME LAKE 8880 3.1 5.3 58 5.3 6.2 85 GRAVE SPRINGS 8550 3.3 3.5 94 3.8 4.4 86 HANSEN SAWMILL 8360 2.3 2.8 82 2.9 3.9 74 LITTLE GOOSE 8870 3.1 -M * 6.7 -M * MIDDLE POWDER 7760 4.8 5.0 96 3.2 6.2 52 POWDER RIVER PASS 9480 5.7 4.5 127 6.4 5.3 121 SOLDIER PARK 8720 1.9 -M * 3.5 -M * SUCKER CREEK 8880 4.6 4.5 102 5.4 5.9 92 TIE CREEK 6870 2.0 1.9 105 3.7 4.6 80 ----- ----- Basin wide percent of average 97 90 BELLE FOURCHE BLIND PARK 6890 2.3 2.7 85 7.7 5.6 138 COLE CANYON 5910 2.5 2.8 89 4.9 3.6 136 NORTH RAPID CREEK 6130 2.6 2.7 96 6.5 4.8 135 ----- ----- Basin wide percent of average 90 136 UPPER N. PLATTE RIVER COLUMBINE 9160 13.7 8.1 169 16.8 9.6 175 DIVIDE PEAK 8880 9.4 7.7 122 12.5 8.7 144 ELK RIVER 8700 9.0 5.6 161 11.8 7.5 157 JOE WRIGHT 10120 13.8 8.4 164 18.5 10.4 178 NORTH FRENCH CREEK 10130 19.3 11.4 169 19.1 10.4 184 OLD BATTLE 10000 19.2 12.8 150 20.7 13.6 152 SAGE CREEK BASIN 7850 6.0 4.5 133 9.1 5.0 182 SOUTH BRUSH CREEK 8440 8.4 4.3 195 11.6 6.8 171 TOWER 10500 24.9 17.8 140 26.4 15.3 173 WEBBER SPRINGS 9250 13.0 9.9 131 17.3 11.2 154 WILLOW CREEK PASS 9540 9.1 4.9 186 9.8 5.8 169 ----- ----- Basin wide percent of average 153 166 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 13.3 9.0 148 14.7 8.8 167 CASPER MTN. 7900 4.8 6.2 77 7.6 6.6 115 DEADMAN HILL 10220 7.3 6.7 109 12.5 6.9 181 DEER PARK 9700 10.7 5.9 181 11.6 9.6 121 LAPRELE CREEK 8375 4.6 4.6 100 5.9 5.5 107 RENO HILL 8400 6.0 5.8 103 7.9 6.4 123 ROACH 9700 9.6 6.2 155 12.5 7.3 171 SAND LAKE 10050 17.3 13.0 133 16.9 10.0 169 SOUTH PASS 9040 8.7 7.1 123 7.9 8.2 96 WINDY PEAK 7900 3.7 3.2 116 6.2 4.9 127 ----- ----- Basin wide percent of average 127 140 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 3.1 165 7.3 6.1 120 DIVIDE PEAK 8880 9.4 7.7 122 12.5 8.7 144 OLD BATTLE 10000 19.2 12.8 150 20.7 13.6 152 SANDSTONE RS 8150 5.2 4.1 127 11.7 7.6 154 WHISKEY PARK 8950 -M 9.1 * 17.9 11.3 158 ----- ----- Basin wide percent of average 140 148 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.9 5.9 117 7.6 5.8 131 BLIND BULL SUM 8650 13.2 11.1 119 9.9 9.5 104 EAST RIM DIVIDE 7930 5.8 5.0 116 6.2 4.9 127 ELKHART PARK G.S. 9400 5.6 5.3 106 6.2 5.9 105 GROS VENTRE SUMMIT 8750 8.0 5.9 136 8.0 5.7 140 GUNSIGHT PASS 9820 8.5 -M * 8.8 -M * KENDALL R.S. 7740 5.9 5.4 109 7.7 5.8 133 LOOMIS PARK 8240 8.7 6.8 128 9.7 7.1 137 NEW FORK LAKE 8340 5.4 4.5 120 5.4 5.1 106 POCKET CREEK 9360 5.7 -M * 6.9 -M * SNIDER BASIN 8060 9.0 5.8 155 9.8 6.7 146 SPRING CREEK DIVIDE 9000 15.2 10.7 142 16.0 10.9 147 TRIPLE PEAK 8500 13.5 10.0 135 15.5 9.5 163 ----- ----- Basin wide percent of average 127 133 LOWER GREEN RIVER HAMS FORK 7840 6.5 4.4 148 7.3 5.0 146 HEWINTA 9519 4.9 3.3 148 8.9 6.3 141 HICKERSON PARK 9145 2.4 2.4 100 4.4 3.9 113 HOLE-IN-ROCK 9150 2.7 2.2 123 4.8 3.6 133 INDIAN CREEK 9425 15.0 10.5 143 14.2 10.3 138 KELLEY R.S. 8180 9.8 6.5 151 12.4 8.5 146 STEEL CREEK PARK 10200 7.3 5.7 128 10.4 6.7 155 ----- ----- Basin wide percent of average 139 141 UPPER BEAR RIVER BUG LAKE 7950 13.4 6.7 200 15.8 8.0 198 HAYDEN FORK 9212 9.3 5.1 182 15.6 8.6 181 KELLEY R.S. 8180 9.8 6.5 151 12.4 8.5 146 LILY LAKE 9156 9.0 4.5 200 11.7 7.6 154 MONTE CRISTO 8960 16.0 8.8 182 18.2 10.4 175 SALT RIVER SUMMIT 7760 7.5 4.4 170 11.2 7.5 149 TRIAL LAKE 9992 17.5 8.7 201 18.2 9.6 190 ----- ----- Basin wide percent of average 185 171 ----------------------------------------------------------------------------- -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.