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 29 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.9 7.8 127 12.8 10.0 128 COTTONWOOD CREEK 7670 13.9 9.2 151 18.5 12.9 143 GRAND TARGHEE 9260 23.8 -M * 17.7 -M * GRANITE CREEK 6770 10.4 7.2 144 12.7 9.1 140 GRASSY LAKE 7265 15.6 14.0 111 18.9 16.5 115 GROS VENTRE SUMMIT 8750 8.4 6.6 127 8.4 6.2 135 GUNSIGHT PASS 9820 8.9 -M * 9.2 -M * LEWIS LAKE DIVIDE 7850 17.7 14.0 126 19.2 16.8 114 PHILLIPS BENCH 8200 15.7 12.0 131 17.2 12.9 133 SALT RIVER SUMMIT 7760 7.7 5.1 151 11.6 8.5 136 SNAKE RIVER STATION 6920 7.7 7.5 103 13.7 10.6 129 SPRING CREEK DIVIDE 9000 15.8 12.0 132 16.5 12.4 133 THUMB DIVIDE 7980 11.1 7.3 152 11.7 8.7 134 TOGWOTEE PASS 9580 14.6 11.2 130 15.7 11.6 135 TWO OCEAN PLATEAU 9240 18.6 13.0 143 15.1 13.0 116 WILLOW CREEK 8380 15.5 13.7 113 20.8 14.9 140 ----- ----- Basin wide percent of average 130 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.2 11.0 111 12.0 9.6 125 BLACK BEAR 8170 21.0 16.4 128 21.9 16.9 130 CANYON 7870 8.0 5.7 140 9.3 7.5 124 FISHER CREEK 9100 18.0 15.6 115 17.9 16.4 109 MADISON PLATEAU 7750 13.7 10.7 128 15.5 11.9 130 NORTHEAST ENTRANCE 7350 5.6 4.7 119 7.7 6.2 124 PARKER PEAK 9400 13.5 10.1 134 14.0 8.0 175 SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134 THUMB DIVIDE 7980 11.1 7.3 152 11.7 8.7 134 TWO OCEAN PLATEAU 9240 18.6 13.0 143 15.1 13.0 116 WHISKEY CREEK 6800 9.3 7.1 131 11.6 9.5 122 WHITE MILL 8700 12.6 10.7 118 13.8 12.3 112 WOLVERINE 7650 7.1 5.5 129 7.3 6.8 107 ----- ----- Basin wide percent of average 127 125 WIND RIVER BURROUGHS CREEK 8750 7.7 6.5 118 8.1 7.7 105 CASTLE CREEK 8400 3.3 -M * 4.0 -M * COLD SPRINGS 9630 4.5 4.5 100 4.5 5.6 80 DEER PARK 9700 11.5 6.7 172 12.3 10.6 116 HOBBS PARK 10100 8.0 7.5 107 7.2 6.2 116 LITTLE WARM 9370 6.3 5.2 121 6.6 6.5 102 SOUTH PASS 9040 9.2 8.0 115 8.4 8.9 94 ST. LAWRENCE ALT 8620 2.9 3.7 78 3.7 4.5 82 TOGWOTEE PASS 9580 14.6 11.2 130 15.7 11.6 135 TOWNSEND CREEK 8700 4.3 4.3 100 6.2 5.9 105 ----- ----- Basin wide percent of average 120 108 BIGHORN BASIN BALD MTN. 9380 9.8 9.4 104 8.9 8.2 109 BEAR TRAP MEADOW 8200 2.9 2.5 116 3.8 4.4 86 BLACKWATER 9780 13.8 11.6 119 13.1 10.5 125 BONE SPRINGS DIV 9350 7.3 7.6 96 7.0 7.0 100 EVENING STAR 9200 15.8 13.1 121 16.9 12.5 135 GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85 KIRWIN 9550 6.5 5.8 112 7.1 5.7 125 MARQUETTE 8760 1.4 4.8 29 3.2 5.2 62 MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50 OWL CREEK 8975 2.2 2.6 85 2.6 2.8 93 POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.8 121 SHELL CREEK 9580 6.9 7.1 97 5.9 6.5 91 SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134 SYLVAN ROAD 7120 7.8 5.9 132 10.7 9.9 108 TIMBER CREEK 7950 1.9 3.0 63 2.4 3.7 65 YOUNTS PEAK 8350 9.1 7.6 120 8.4 7.9 106 ----- ----- Basin wide percent of average 106 106 SHOSHONE RIVER BLACKWATER 9780 13.8 11.6 119 13.1 10.5 125 EVENING STAR 9200 15.8 13.1 121 16.9 12.5 135 KIRWIN 9550 6.5 5.8 112 7.1 5.7 125 MARQUETTE 8760 1.4 4.8 29 3.2 5.2 62 SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134 SYLVAN ROAD 7120 7.8 5.9 132 10.7 9.9 108 YOUNTS PEAK 8350 9.1 7.6 120 8.4 7.9 106 ----- ----- Basin wide percent of average 112 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.9 2.5 116 3.8 4.4 86 BIG GOOSE 7990 2.5 4.2 60 4.2 4.4 95 BONE SPRINGS DIV 9350 7.3 7.6 96 7.0 7.0 100 BURGESS JUNCTION 7880 3.4 5.3 64 4.8 5.9 81 CLOUD PEAK RESERVOIR 9860 6.4 5.6 114 7.0 6.3 111 DOME LAKE 8880 3.4 5.9 58 5.5 6.7 82 GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85 HANSEN SAWMILL 8360 2.6 3.1 84 3.1 4.2 74 LITTLE GOOSE 8870 3.1 -M * 6.9 -M * MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50 POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.8 121 SOLDIER PARK 8720 2.3 -M * 3.7 -M * SUCKER CREEK 8880 4.8 5.1 94 5.5 6.5 85 TIE CREEK 6870 2.0 2.4 83 3.8 5.0 76 ----- ----- Basin wide percent of average 89 87 BELLE FOURCHE BLIND PARK 6890 2.5 3.3 76 7.9 6.0 132 COLE CANYON 5910 2.5 3.2 78 5.1 3.8 134 NORTH RAPID CREEK 6130 2.7 3.1 87 6.7 5.2 129 ----- ----- Basin wide percent of average 80 131 UPPER N. PLATTE RIVER COLUMBINE 9160 14.6 9.4 155 17.7 11.0 161 DIVIDE PEAK 8880 10.9 8.8 124 14.2 9.7 146 ELK RIVER 8700 10.4 6.8 153 13.3 8.5 156 JOE WRIGHT 10120 14.4 9.3 155 19.1 11.5 166 NORTH FRENCH CREEK 10130 20.4 12.8 159 20.2 11.6 174 OLD BATTLE 10000 22.0 14.2 155 23.0 15.3 150 SAGE CREEK BASIN 7850 6.9 5.1 135 10.0 5.6 179 SOUTH BRUSH CREEK 8440 9.1 4.9 186 12.3 7.5 164 TOWER 10500 26.7 19.8 135 27.3 17.2 159 WEBBER SPRINGS 9250 14.8 11.0 135 19.2 12.5 154 WILLOW CREEK PASS 9540 10.0 5.4 185 10.4 6.3 165 ----- ----- Basin wide percent of average 149 160 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.3 10.3 139 15.7 9.8 160 CASPER MTN. 7900 5.0 6.7 75 7.9 7.1 111 DEADMAN HILL 10220 5.9 7.4 80 13.3 7.6 175 DEER PARK 9700 11.5 6.7 172 12.3 10.6 116 LAPRELE CREEK 8375 5.2 5.1 102 6.4 6.0 107 RENO HILL 8400 6.4 6.4 100 8.2 7.0 117 ROACH 9700 11.0 7.0 157 13.7 8.2 167 SAND LAKE 10050 18.4 14.4 128 17.8 11.1 160 SOUTH PASS 9040 9.2 8.0 115 8.4 8.9 94 WINDY PEAK 7900 3.9 3.4 115 6.4 5.4 119 ----- ----- Basin wide percent of average 120 135 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.7 3.8 150 8.0 6.8 118 DIVIDE PEAK 8880 10.9 8.8 124 14.2 9.7 146 OLD BATTLE 10000 22.0 14.2 155 23.0 15.3 150 SANDSTONE RS 8150 6.1 4.9 124 13.1 8.5 154 WHISKEY PARK 8950 -M 10.5 * 19.9 12.6 158 ----- ----- Basin wide percent of average 141 148 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.5 6.6 114 8.2 6.3 130 BLIND BULL SUM 8650 13.7 12.6 109 10.5 10.6 99 EAST RIM DIVIDE 7930 6.2 5.7 109 6.6 5.5 120 ELKHART PARK G.S. 9400 6.2 6.0 103 6.8 6.5 105 GROS VENTRE SUMMIT 8750 8.4 6.6 127 8.4 6.2 135 GUNSIGHT PASS 9820 8.9 -M * 9.2 -M * KENDALL R.S. 7740 6.4 6.3 102 8.2 6.6 124 LOOMIS PARK 8240 9.2 7.7 119 10.2 8.0 128 NEW FORK LAKE 8340 5.8 5.2 112 5.8 5.7 102 POCKET CREEK 9360 6.3 -M * 7.5 -M * SNIDER BASIN 8060 9.6 6.6 145 10.3 7.6 136 SPRING CREEK DIVIDE 9000 15.8 12.0 132 16.5 12.4 133 TRIPLE PEAK 8500 14.2 11.4 125 16.1 10.7 150 ----- ----- Basin wide percent of average 119 125 LOWER GREEN RIVER HAMS FORK 7840 7.0 5.2 135 8.1 5.5 147 HEWINTA 9519 5.4 3.9 138 9.5 6.8 140 HICKERSON PARK 9145 2.8 2.7 104 4.8 4.1 117 HOLE-IN-ROCK 9150 2.8 2.5 112 5.2 3.8 137 INDIAN CREEK 9425 15.8 11.9 133 14.9 11.6 128 KELLEY R.S. 8180 10.1 7.3 138 12.8 9.6 133 STEEL CREEK PARK 10200 8.3 6.4 130 11.3 7.3 155 ----- ----- Basin wide percent of average 131 137 UPPER BEAR RIVER BUG LAKE 7950 13.9 7.8 178 16.3 8.8 185 HAYDEN FORK 9212 10.1 6.0 168 16.6 9.6 173 KELLEY R.S. 8180 10.1 7.3 138 12.8 9.6 133 LILY LAKE 9156 9.6 5.2 185 12.6 8.4 150 MONTE CRISTO 8960 17.3 10.4 166 18.9 11.6 163 SALT RIVER SUMMIT 7760 7.7 5.1 151 11.6 8.5 136 TRIAL LAKE 9992 19.5 10.0 195 19.2 10.8 178 ----- ----- Basin wide percent of average 170 160 ----------------------------------------------------------------------------- -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.