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 22 , 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 6.9 135 12.2 9.0 136 COTTONWOOD CREEK 7670 13.6 8.1 168 18.1 11.6 156 GRAND TARGHEE 9260 22.3 -M * 16.7 -M * GRANITE CREEK 6770 9.5 6.2 153 12.0 8.2 146 GRASSY LAKE 7265 14.2 12.4 115 17.4 14.7 118 GROS VENTRE SUMMIT 8750 8.1 5.9 137 8.1 5.7 142 GUNSIGHT PASS 9820 8.5 -M * 8.9 -M * LEWIS LAKE DIVIDE 7850 16.1 12.4 130 18.1 15.1 120 PHILLIPS BENCH 8200 14.7 10.7 137 16.0 11.5 139 SALT RIVER SUMMIT 7760 7.5 4.5 167 11.2 7.6 147 SNAKE RIVER STATION 6920 7.2 6.6 109 13.0 9.6 135 SPRING CREEK DIVIDE 9000 15.2 10.8 141 16.1 11.1 145 THUMB DIVIDE 7980 10.1 6.4 158 10.9 7.9 138 TOGWOTEE PASS 9580 14.1 10.1 140 15.2 10.5 145 TWO OCEAN PLATEAU 9240 18.0 11.8 153 14.6 11.9 123 WILLOW CREEK 8380 14.8 12.2 121 20.0 13.5 148 ----- ----- Basin wide percent of average 138 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.7 10.0 117 11.2 8.8 127 BLACK BEAR 8170 18.6 14.9 125 19.8 15.3 129 CANYON 7870 7.3 5.1 143 8.5 6.8 125 FISHER CREEK 9100 16.6 14.1 118 16.8 14.8 114 MADISON PLATEAU 7750 12.0 9.6 125 14.0 10.9 128 NORTHEAST ENTRANCE 7350 5.2 4.2 124 7.4 5.7 130 PARKER PEAK 9400 12.9 9.2 140 13.2 7.4 178 SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137 THUMB DIVIDE 7980 10.1 6.4 158 10.9 7.9 138 TWO OCEAN PLATEAU 9240 18.0 11.8 153 14.6 11.9 123 WHISKEY CREEK 6800 8.0 6.3 127 10.3 8.6 120 WHITE MILL 8700 12.0 9.8 122 12.9 11.3 114 WOLVERINE 7650 7.0 4.8 146 6.9 6.3 110 ----- ----- Basin wide percent of average 130 127 WIND RIVER BURROUGHS CREEK 8750 7.4 5.8 128 7.8 7.0 111 CASTLE CREEK 8400 3.1 -M * 3.8 -M * COLD SPRINGS 9630 4.3 4.2 102 4.3 5.3 81 DEER PARK 9700 10.8 6.0 180 11.7 9.7 121 HOBBS PARK 10100 7.7 7.0 110 6.8 5.9 115 LITTLE WARM 9370 6.1 4.7 130 6.2 6.0 103 SOUTH PASS 9040 8.7 7.3 119 7.9 8.3 95 ST. LAWRENCE ALT 8620 2.6 3.5 74 3.5 4.3 81 TOGWOTEE PASS 9580 14.1 10.1 140 15.2 10.5 145 TOWNSEND CREEK 8700 4.0 3.9 103 6.0 5.6 107 ----- ----- Basin wide percent of average 125 111 BIGHORN BASIN BALD MTN. 9380 9.5 8.5 112 8.6 7.4 116 BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88 BLACKWATER 9780 13.2 10.7 123 12.3 9.8 126 BONE SPRINGS DIV 9350 7.0 6.9 101 6.6 6.5 102 EVENING STAR 9200 14.7 12.0 123 15.8 11.5 137 GRAVE SPRINGS 8550 3.3 3.6 92 3.8 4.4 86 KIRWIN 9550 6.4 5.4 119 6.8 5.3 128 MARQUETTE 8760 1.3 4.5 29 3.1 5.0 62 MIDDLE POWDER 7760 4.8 5.1 94 3.2 6.2 52 OWL CREEK 8975 2.0 2.4 83 2.4 2.7 89 POWDER RIVER PASS 9480 5.7 4.5 127 6.5 5.4 120 SHELL CREEK 9580 6.5 6.6 98 5.7 6.0 95 SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137 SYLVAN ROAD 7120 7.4 5.4 137 10.1 9.2 110 TIMBER CREEK 7950 1.8 2.8 64 2.3 3.5 66 YOUNTS PEAK 8350 8.6 6.8 126 7.8 7.2 108 ----- ----- Basin wide percent of average 109 108 SHOSHONE RIVER BLACKWATER 9780 13.2 10.7 123 12.3 9.8 126 EVENING STAR 9200 14.7 12.0 123 15.8 11.5 137 KIRWIN 9550 6.4 5.4 119 6.8 5.3 128 MARQUETTE 8760 1.3 4.5 29 3.1 5.0 62 SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137 SYLVAN ROAD 7120 7.4 5.4 137 10.1 9.2 110 YOUNTS PEAK 8350 8.6 6.8 126 7.8 7.2 108 ----- ----- Basin wide percent of average 115 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88 BIG GOOSE 7990 -M 3.8 * 4.0 4.2 95 BONE SPRINGS DIV 9350 7.0 6.9 101 6.6 6.5 102 BURGESS JUNCTION 7880 3.2 4.9 65 4.6 5.5 84 CLOUD PEAK RESERVOIR 9860 6.2 5.1 122 6.2 5.9 105 DOME LAKE 8880 3.0 5.4 56 5.3 6.3 84 GRAVE SPRINGS 8550 3.3 3.6 92 3.8 4.4 86 HANSEN SAWMILL 8360 2.3 2.8 82 2.9 4.0 73 LITTLE GOOSE 8870 3.0 -M * 6.7 -M * MIDDLE POWDER 7760 4.8 5.1 94 3.2 6.2 52 POWDER RIVER PASS 9480 5.7 4.5 127 6.5 5.4 120 SOLDIER PARK 8720 1.9 -M * 3.5 -M * SUCKER CREEK 8880 4.6 4.6 100 5.4 6.0 90 TIE CREEK 6870 1.9 2.1 90 3.7 4.7 79 ----- ----- Basin wide percent of average 95 88 BELLE FOURCHE BLIND PARK 6890 2.2 2.8 79 7.6 5.6 136 COLE CANYON 5910 2.4 2.9 83 4.9 3.6 136 NORTH RAPID CREEK 6130 2.5 2.8 89 6.3 4.8 131 ----- ----- Basin wide percent of average 84 134 UPPER N. PLATTE RIVER COLUMBINE 9160 14.1 8.2 172 17.2 9.8 176 DIVIDE PEAK 8880 10.1 7.8 129 13.3 8.8 151 ELK RIVER 8700 9.7 5.8 167 12.7 7.6 167 JOE WRIGHT 10120 14.2 8.5 167 18.9 10.5 180 NORTH FRENCH CREEK 10130 20.0 11.6 172 19.9 10.5 190 OLD BATTLE 10000 20.4 13.0 157 22.1 13.8 160 SAGE CREEK BASIN 7850 6.5 4.5 144 9.5 5.1 186 SOUTH BRUSH CREEK 8440 9.0 4.4 205 12.2 6.9 177 TOWER 10500 25.7 18.0 143 26.8 15.5 173 WEBBER SPRINGS 9250 13.9 10.0 139 18.3 11.4 161 WILLOW CREEK PASS 9540 9.7 5.0 194 10.3 5.8 178 ----- ----- Basin wide percent of average 158 171 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.0 9.2 152 15.5 8.9 174 CASPER MTN. 7900 5.0 6.2 81 7.7 6.7 115 DEADMAN HILL 10220 7.2 6.8 106 13.2 7.0 189 DEER PARK 9700 10.8 6.0 180 11.7 9.7 121 LAPRELE CREEK 8375 4.9 4.7 104 6.2 5.5 113 RENO HILL 8400 6.3 5.9 107 8.2 6.5 126 ROACH 9700 10.8 6.3 171 13.7 7.4 185 SAND LAKE 10050 17.9 13.2 136 17.6 10.2 173 SOUTH PASS 9040 8.7 7.3 119 7.9 8.3 95 WINDY PEAK 7900 4.0 3.2 125 6.4 5.0 128 ----- ----- Basin wide percent of average 130 144 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.7 3.1 184 7.9 6.2 127 DIVIDE PEAK 8880 10.1 7.8 129 13.3 8.8 151 OLD BATTLE 10000 20.4 13.0 157 22.1 13.8 160 SANDSTONE RS 8150 6.0 4.2 143 12.4 7.7 161 WHISKEY PARK 8950 -M 9.3 * 18.8 11.4 165 ----- ----- Basin wide percent of average 150 156 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.9 6.0 115 7.7 5.9 131 BLIND BULL SUM 8650 13.2 11.3 117 9.9 9.7 102 EAST RIM DIVIDE 7930 5.8 5.1 114 6.2 5.0 124 ELKHART PARK G.S. 9400 5.7 5.4 106 6.3 6.0 105 GROS VENTRE SUMMIT 8750 8.1 5.9 137 8.1 5.7 142 GUNSIGHT PASS 9820 8.5 -M * 8.9 -M * KENDALL R.S. 7740 5.9 5.5 107 7.7 5.9 131 LOOMIS PARK 8240 8.7 6.9 126 9.7 7.2 135 NEW FORK LAKE 8340 5.4 4.6 117 5.4 5.2 104 POCKET CREEK 9360 5.8 -M * 6.9 -M * SNIDER BASIN 8060 9.1 5.9 154 9.9 6.8 146 SPRING CREEK DIVIDE 9000 15.2 10.8 141 16.1 11.1 145 TRIPLE PEAK 8500 13.5 10.2 132 15.6 9.6 163 ----- ----- Basin wide percent of average 126 131 LOWER GREEN RIVER HAMS FORK 7840 6.6 4.5 147 7.5 5.0 150 HEWINTA 9519 5.4 3.4 159 9.3 6.4 145 HICKERSON PARK 9145 2.7 2.4 113 4.7 3.9 121 HOLE-IN-ROCK 9150 2.8 2.3 122 5.2 3.6 144 INDIAN CREEK 9425 15.1 10.7 141 14.3 10.5 136 KELLEY R.S. 8180 9.9 6.6 150 12.5 8.6 145 STEEL CREEK PARK 10200 7.9 5.8 136 10.9 6.8 160 ----- ----- Basin wide percent of average 141 144 UPPER BEAR RIVER BUG LAKE 7950 13.5 6.8 199 16.0 8.1 198 HAYDEN FORK 9212 9.8 5.2 188 16.3 8.7 187 KELLEY R.S. 8180 9.9 6.6 150 12.5 8.6 145 LILY LAKE 9156 9.5 4.6 207 12.3 7.7 160 MONTE CRISTO 8960 16.4 9.0 182 18.4 10.6 174 SALT RIVER SUMMIT 7760 7.5 4.5 167 11.2 7.6 147 TRIAL LAKE 9992 18.4 8.9 207 18.5 9.7 191 ----- ----- Basin wide percent of average 186 172 ----------------------------------------------------------------------------- -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.