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 23 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.5 7.0 136 12.2 9.2 133 COTTONWOOD CREEK 7670 13.9 8.3 167 18.4 11.8 156 GRAND TARGHEE 9260 22.7 -M * 17.0 -M * GRANITE CREEK 6770 10.1 6.4 158 12.5 8.3 151 GRASSY LAKE 7265 14.6 12.6 116 17.9 15.0 119 GROS VENTRE SUMMIT 8750 8.3 6.0 138 8.3 5.8 143 GUNSIGHT PASS 9820 8.7 -M * 9.1 -M * LEWIS LAKE DIVIDE 7850 16.6 12.6 132 18.6 15.3 122 PHILLIPS BENCH 8200 15.4 10.9 141 16.8 11.7 144 SALT RIVER SUMMIT 7760 7.8 4.6 170 11.6 7.8 149 SNAKE RIVER STATION 6920 7.3 6.8 107 13.3 9.7 137 SPRING CREEK DIVIDE 9000 15.7 11.0 143 16.5 11.3 146 THUMB DIVIDE 7980 10.5 6.6 159 11.3 8.0 141 TOGWOTEE PASS 9580 14.4 10.3 140 15.4 10.6 145 TWO OCEAN PLATEAU 9240 18.1 12.0 151 14.9 12.0 124 WILLOW CREEK 8380 15.2 12.4 123 20.4 13.7 149 ----- ----- Basin wide percent of average 139 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.9 10.1 118 11.8 8.9 133 BLACK BEAR 8170 19.1 15.1 126 20.3 15.5 131 CANYON 7870 7.4 5.2 142 8.8 6.9 128 FISHER CREEK 9100 16.9 14.4 117 17.2 15.0 115 MADISON PLATEAU 7750 12.5 9.8 128 14.5 11.0 132 NORTHEAST ENTRANCE 7350 5.3 4.3 123 7.6 5.8 131 PARKER PEAK 9400 13.2 9.3 142 13.5 7.5 180 SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138 THUMB DIVIDE 7980 10.5 6.6 159 11.3 8.0 141 TWO OCEAN PLATEAU 9240 18.1 12.0 151 14.9 12.0 124 WHISKEY CREEK 6800 8.3 6.5 128 10.5 8.8 119 WHITE MILL 8700 12.2 10.0 122 13.4 11.5 117 WOLVERINE 7650 7.0 4.9 143 7.3 6.4 114 ----- ----- Basin wide percent of average 130 130 WIND RIVER BURROUGHS CREEK 8750 7.6 5.9 129 8.1 7.1 114 CASTLE CREEK 8400 3.2 -M * 4.1 -M * COLD SPRINGS 9630 4.5 4.2 107 4.5 5.3 85 DEER PARK 9700 11.2 6.0 187 12.2 9.8 124 HOBBS PARK 10100 7.9 7.1 111 7.2 5.9 122 LITTLE WARM 9370 6.2 4.7 132 6.5 6.1 107 SOUTH PASS 9040 9.2 7.4 124 8.3 8.4 99 ST. LAWRENCE ALT 8620 2.9 3.5 83 3.8 4.3 88 TOGWOTEE PASS 9580 14.4 10.3 140 15.4 10.6 145 TOWNSEND CREEK 8700 4.3 4.0 108 6.1 5.6 109 ----- ----- Basin wide percent of average 128 114 BIGHORN BASIN BALD MTN. 9380 9.7 8.7 111 8.8 7.5 117 BEAR TRAP MEADOW 8200 3.0 2.3 130 4.0 4.2 95 BLACKWATER 9780 13.4 10.9 123 12.7 9.9 128 BONE SPRINGS DIV 9350 7.1 7.1 100 6.9 6.6 105 EVENING STAR 9200 14.8 12.2 121 16.0 11.6 138 GRAVE SPRINGS 8550 3.5 3.7 95 4.0 4.5 89 KIRWIN 9550 6.6 5.4 122 7.2 5.4 133 MARQUETTE 8760 1.5 4.6 33 3.3 5.0 66 MIDDLE POWDER 7760 4.8 5.1 94 3.3 6.3 52 OWL CREEK 8975 2.1 2.4 88 2.6 2.7 96 POWDER RIVER PASS 9480 6.0 4.7 128 6.9 5.4 128 SHELL CREEK 9580 6.8 6.7 101 5.8 6.0 97 SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138 SYLVAN ROAD 7120 7.6 5.4 141 10.3 9.3 111 TIMBER CREEK 7950 1.9 2.9 66 2.4 3.5 69 YOUNTS PEAK 8350 8.8 6.9 128 8.2 7.3 112 ----- ----- Basin wide percent of average 110 110 SHOSHONE RIVER BLACKWATER 9780 13.4 10.9 123 12.7 9.9 128 EVENING STAR 9200 14.8 12.2 121 16.0 11.6 138 KIRWIN 9550 6.6 5.4 122 7.2 5.4 133 MARQUETTE 8760 1.5 4.6 33 3.3 5.0 66 SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138 SYLVAN ROAD 7120 7.6 5.4 141 10.3 9.3 111 YOUNTS PEAK 8350 8.8 6.9 128 8.2 7.3 112 ----- ----- Basin wide percent of average 116 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.0 2.3 130 4.0 4.2 95 BIG GOOSE 7990 2.5 3.8 66 4.2 4.2 100 BONE SPRINGS DIV 9350 7.1 7.1 100 6.9 6.6 105 BURGESS JUNCTION 7880 3.3 5.0 66 4.8 5.6 86 CLOUD PEAK RESERVOIR 9860 6.4 5.1 125 6.9 6.0 115 DOME LAKE 8880 3.3 5.5 60 5.4 6.4 84 GRAVE SPRINGS 8550 3.5 3.7 95 4.0 4.5 89 HANSEN SAWMILL 8360 2.7 2.8 96 3.1 4.0 78 LITTLE GOOSE 8870 3.2 -M * 6.9 -M * MIDDLE POWDER 7760 4.8 5.1 94 3.3 6.3 52 POWDER RIVER PASS 9480 6.0 4.7 128 6.9 5.4 128 SOLDIER PARK 8720 2.2 -M * 3.7 -M * SUCKER CREEK 8880 4.8 4.7 102 5.5 6.1 90 TIE CREEK 6870 2.0 2.2 91 3.8 4.7 81 ----- ----- Basin wide percent of average 95 92 BELLE FOURCHE BLIND PARK 6890 2.4 2.9 83 7.8 5.7 137 COLE CANYON 5910 2.6 2.9 90 4.9 3.6 136 NORTH RAPID CREEK 6130 2.6 2.8 93 6.6 4.9 135 ----- ----- Basin wide percent of average 88 136 UPPER N. PLATTE RIVER COLUMBINE 9160 14.2 8.4 169 17.5 10.0 175 DIVIDE PEAK 8880 10.4 8.0 130 14.0 8.9 157 ELK RIVER 8700 9.9 5.9 168 12.9 7.7 168 JOE WRIGHT 10120 14.3 8.6 166 18.9 10.7 177 NORTH FRENCH CREEK 10130 20.1 11.8 170 20.0 10.7 187 OLD BATTLE 10000 20.7 13.1 158 22.5 14.0 161 SAGE CREEK BASIN 7850 6.8 4.6 148 9.7 5.2 187 SOUTH BRUSH CREEK 8440 9.0 4.5 200 12.4 7.0 177 TOWER 10500 25.8 18.3 141 27.1 15.7 173 WEBBER SPRINGS 9250 14.2 10.2 139 18.6 11.5 162 WILLOW CREEK PASS 9540 9.8 5.0 196 10.3 5.9 175 ----- ----- Basin wide percent of average 158 171 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.0 9.3 151 15.6 9.0 173 CASPER MTN. 7900 5.1 6.3 81 7.7 6.7 115 DEADMAN HILL 10220 6.3 6.8 93 13.2 7.1 186 DEER PARK 9700 11.2 6.0 187 12.2 9.8 124 LAPRELE CREEK 8375 5.0 4.7 106 6.3 5.6 113 RENO HILL 8400 6.3 6.0 105 8.3 6.6 126 ROACH 9700 10.9 6.4 170 13.7 7.5 183 SAND LAKE 10050 18.0 13.4 134 17.7 10.3 172 SOUTH PASS 9040 9.2 7.4 124 8.3 8.4 99 WINDY PEAK 7900 4.0 3.2 125 6.4 5.0 128 ----- ----- Basin wide percent of average 129 144 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.6 3.2 175 8.0 6.3 127 DIVIDE PEAK 8880 10.4 8.0 130 14.0 8.9 157 OLD BATTLE 10000 20.7 13.1 158 22.5 14.0 161 SANDSTONE RS 8150 6.0 4.3 140 12.6 7.8 162 WHISKEY PARK 8950 -M 9.4 * 19.0 11.6 164 ----- ----- Basin wide percent of average 149 157 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.6 6.1 125 8.3 5.9 141 BLIND BULL SUM 8650 13.5 11.5 117 10.4 9.8 106 EAST RIM DIVIDE 7930 6.2 5.2 119 6.5 5.1 127 ELKHART PARK G.S. 9400 6.2 5.5 113 6.8 6.0 113 GROS VENTRE SUMMIT 8750 8.3 6.0 138 8.3 5.8 143 GUNSIGHT PASS 9820 8.7 -M * 9.1 -M * KENDALL R.S. 7740 6.3 5.7 111 8.1 6.0 135 LOOMIS PARK 8240 9.2 7.0 131 10.1 7.3 138 NEW FORK LAKE 8340 5.8 4.7 123 5.7 5.3 108 POCKET CREEK 9360 6.3 -M * 7.4 -M * SNIDER BASIN 8060 9.5 6.0 158 10.3 6.9 149 SPRING CREEK DIVIDE 9000 15.7 11.0 143 16.5 11.3 146 TRIPLE PEAK 8500 13.9 10.3 135 16.0 9.8 163 ----- ----- Basin wide percent of average 129 135 LOWER GREEN RIVER HAMS FORK 7840 7.0 4.6 152 7.8 5.1 153 HEWINTA 9519 5.5 3.5 157 9.5 6.5 146 HICKERSON PARK 9145 2.8 2.5 112 4.9 3.9 126 HOLE-IN-ROCK 9150 2.8 2.3 122 5.3 3.6 147 INDIAN CREEK 9425 15.6 10.9 143 14.9 10.6 141 KELLEY R.S. 8180 10.2 6.7 152 13.0 8.8 148 STEEL CREEK PARK 10200 8.2 5.9 139 11.2 6.9 162 ----- ----- Basin wide percent of average 143 147 UPPER BEAR RIVER BUG LAKE 7950 13.9 6.9 201 16.3 8.2 199 HAYDEN FORK 9212 10.3 5.3 194 16.9 8.9 190 KELLEY R.S. 8180 10.2 6.7 152 13.0 8.8 148 LILY LAKE 9156 9.6 4.7 204 12.5 7.8 160 MONTE CRISTO 8960 17.1 9.2 186 18.6 10.7 174 SALT RIVER SUMMIT 7760 7.8 4.6 170 11.6 7.8 149 TRIAL LAKE 9992 19.1 9.0 212 18.7 9.9 189 ----- ----- Basin wide percent of average 190 173 ----------------------------------------------------------------------------- -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.