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 30 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.3 7.9 130 13.2 10.1 131 COTTONWOOD CREEK 7670 14.2 9.4 151 18.9 13.1 144 GRAND TARGHEE 9260 24.4 -M * 17.8 -M * GRANITE CREEK 6770 10.9 7.3 149 13.2 9.3 142 GRASSY LAKE 7265 16.5 14.2 116 19.7 16.8 117 GROS VENTRE SUMMIT 8750 8.6 6.7 128 8.6 6.2 139 GUNSIGHT PASS 9820 9.2 -M * 9.5 -M * LEWIS LAKE DIVIDE 7850 18.8 14.3 131 19.8 17.0 116 PHILLIPS BENCH 8200 16.5 12.2 135 18.0 13.1 137 SALT RIVER SUMMIT 7760 8.2 5.2 158 12.0 8.7 138 SNAKE RIVER STATION 6920 7.9 7.6 104 14.1 10.7 132 SPRING CREEK DIVIDE 9000 16.3 12.2 134 16.9 12.6 134 THUMB DIVIDE 7980 11.7 7.4 158 12.2 8.8 139 TOGWOTEE PASS 9580 14.8 11.3 131 15.9 11.7 136 TWO OCEAN PLATEAU 9240 19.0 13.1 145 15.3 13.1 117 WILLOW CREEK 8380 16.3 13.9 117 21.4 15.1 142 ----- ----- Basin wide percent of average 133 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.4 11.2 111 12.2 9.8 124 BLACK BEAR 8170 22.6 16.8 135 23.3 17.1 136 CANYON 7870 8.3 5.9 141 9.6 7.6 126 FISHER CREEK 9100 18.6 15.9 117 18.4 16.6 111 MADISON PLATEAU 7750 14.6 10.9 134 16.4 12.1 136 NORTHEAST ENTRANCE 7350 5.8 4.8 121 7.8 6.3 124 PARKER PEAK 9400 13.8 10.3 134 14.1 8.0 176 SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136 THUMB DIVIDE 7980 11.7 7.4 158 12.2 8.8 139 TWO OCEAN PLATEAU 9240 19.0 13.1 145 15.3 13.1 117 WHISKEY CREEK 6800 10.1 7.3 138 12.5 9.6 130 WHITE MILL 8700 13.0 10.9 119 14.1 12.5 113 WOLVERINE 7650 7.2 5.6 129 7.3 6.9 106 ----- ----- Basin wide percent of average 130 128 WIND RIVER BURROUGHS CREEK 8750 7.8 6.6 118 8.2 7.8 105 CASTLE CREEK 8400 3.3 -M * 4.0 -M * COLD SPRINGS 9630 4.7 4.6 102 4.5 5.6 80 DEER PARK 9700 12.3 6.7 184 13.3 10.7 124 HOBBS PARK 10100 8.3 7.6 109 7.2 6.3 114 LITTLE WARM 9370 6.4 5.2 123 6.6 6.6 100 SOUTH PASS 9040 10.1 8.1 125 8.9 9.0 99 ST. LAWRENCE ALT 8620 2.9 3.7 78 3.9 4.5 87 TOGWOTEE PASS 9580 14.8 11.3 131 15.9 11.7 136 TOWNSEND CREEK 8700 4.4 4.3 102 6.2 5.9 105 ----- ----- Basin wide percent of average 123 110 BIGHORN BASIN BALD MTN. 9380 10.1 9.5 106 9.1 8.3 110 BEAR TRAP MEADOW 8200 3.0 2.5 120 3.9 4.4 89 BLACKWATER 9780 13.9 11.8 118 13.2 10.6 125 BONE SPRINGS DIV 9350 7.6 7.7 99 7.1 7.1 100 EVENING STAR 9200 15.8 13.4 118 17.1 12.7 135 GRAVE SPRINGS 8550 3.5 3.9 90 4.1 4.8 85 KIRWIN 9550 6.6 5.8 114 7.1 5.8 122 MARQUETTE 8760 1.4 4.9 29 3.2 5.2 62 MIDDLE POWDER 7760 4.8 5.4 89 3.1 6.7 46 OWL CREEK 8975 2.2 2.6 85 2.5 2.9 86 POWDER RIVER PASS 9480 6.1 5.1 120 7.0 5.9 119 SHELL CREEK 9580 7.1 7.2 99 6.0 6.6 91 SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136 SYLVAN ROAD 7120 8.0 6.0 133 10.8 9.9 109 TIMBER CREEK 7950 2.0 3.0 67 2.5 3.7 68 YOUNTS PEAK 8350 9.2 7.7 119 8.5 8.0 106 ----- ----- Basin wide percent of average 106 106 SHOSHONE RIVER BLACKWATER 9780 13.9 11.8 118 13.2 10.6 125 EVENING STAR 9200 15.8 13.4 118 17.1 12.7 135 KIRWIN 9550 6.6 5.8 114 7.1 5.8 122 MARQUETTE 8760 1.4 4.9 29 3.2 5.2 62 SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136 SYLVAN ROAD 7120 8.0 6.0 133 10.8 9.9 109 YOUNTS PEAK 8350 9.2 7.7 119 8.5 8.0 106 ----- ----- Basin wide percent of average 111 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.0 2.5 120 3.9 4.4 89 BIG GOOSE 7990 2.5 4.3 58 4.1 4.4 93 BONE SPRINGS DIV 9350 7.6 7.7 99 7.1 7.1 100 BURGESS JUNCTION 7880 3.4 5.4 63 4.8 6.0 80 CLOUD PEAK RESERVOIR 9860 6.4 5.6 114 6.9 6.3 110 DOME LAKE 8880 3.5 5.9 59 5.4 6.8 79 GRAVE SPRINGS 8550 3.5 3.9 90 4.1 4.8 85 HANSEN SAWMILL 8360 2.6 3.2 81 3.1 4.2 74 LITTLE GOOSE 8870 3.2 -M * 6.8 -M * MIDDLE POWDER 7760 4.8 5.4 89 3.1 6.7 46 POWDER RIVER PASS 9480 6.1 5.1 120 7.0 5.9 119 SOLDIER PARK 8720 2.3 -M * 3.7 -M * SUCKER CREEK 8880 4.9 5.1 96 5.7 6.6 86 TIE CREEK 6870 2.0 2.5 80 3.7 5.0 74 ----- ----- Basin wide percent of average 89 86 BELLE FOURCHE BLIND PARK 6890 2.6 3.5 74 8.0 6.1 131 COLE CANYON 5910 2.5 3.2 78 5.2 3.8 137 NORTH RAPID CREEK 6130 2.7 3.2 84 6.6 5.2 127 ----- ----- Basin wide percent of average 79 131 UPPER N. PLATTE RIVER COLUMBINE 9160 14.9 9.6 155 18.1 11.2 162 DIVIDE PEAK 8880 11.7 8.9 131 15.2 9.8 155 ELK RIVER 8700 11.5 6.9 167 14.1 8.6 164 JOE WRIGHT 10120 14.5 9.4 154 19.1 11.7 163 NORTH FRENCH CREEK 10130 20.7 13.0 159 20.4 11.7 174 OLD BATTLE 10000 23.3 14.3 163 23.7 15.5 153 SAGE CREEK BASIN 7850 7.9 5.2 152 10.9 5.7 191 SOUTH BRUSH CREEK 8440 9.1 5.0 182 12.4 7.6 163 TOWER 10500 27.5 20.1 137 27.4 17.4 157 WEBBER SPRINGS 9250 16.0 11.2 143 20.4 12.7 161 WILLOW CREEK PASS 9540 10.4 5.5 189 10.6 6.3 168 ----- ----- Basin wide percent of average 154 163 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.5 10.4 139 15.9 9.9 161 CASPER MTN. 7900 5.3 6.8 78 8.2 7.1 115 DEADMAN HILL 10220 6.1 7.4 82 13.3 7.7 173 DEER PARK 9700 12.3 6.7 184 13.3 10.7 124 LAPRELE CREEK 8375 5.3 5.2 102 6.6 6.0 110 RENO HILL 8400 6.7 6.4 105 8.6 7.0 123 ROACH 9700 11.1 7.1 156 13.9 8.3 167 SAND LAKE 10050 18.5 14.6 127 17.9 11.3 158 SOUTH PASS 9040 10.1 8.1 125 8.9 9.0 99 WINDY PEAK 7900 4.0 3.4 118 6.5 5.4 120 ----- ----- Basin wide percent of average 123 137 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.9 3.9 151 8.5 6.9 123 DIVIDE PEAK 8880 11.7 8.9 131 15.2 9.8 155 OLD BATTLE 10000 23.3 14.3 163 23.7 15.5 153 SANDSTONE RS 8150 7.1 5.0 142 14.3 8.7 164 WHISKEY PARK 8950 -M 10.7 * 20.7 12.8 162 ----- ----- Basin wide percent of average 150 153 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.2 6.7 122 8.9 6.4 139 BLIND BULL SUM 8650 14.3 12.8 112 11.0 10.8 102 EAST RIM DIVIDE 7930 6.6 5.7 116 6.7 5.6 120 ELKHART PARK G.S. 9400 6.5 6.1 107 7.1 6.5 109 GROS VENTRE SUMMIT 8750 8.6 6.7 128 8.6 6.2 139 GUNSIGHT PASS 9820 9.2 -M * 9.5 -M * KENDALL R.S. 7740 6.7 6.4 105 8.5 6.6 129 LOOMIS PARK 8240 9.6 7.8 123 10.6 8.1 131 NEW FORK LAKE 8340 6.1 5.2 117 5.9 5.8 102 POCKET CREEK 9360 6.6 -M * 8.0 -M * SNIDER BASIN 8060 10.1 6.7 151 10.7 7.7 139 SPRING CREEK DIVIDE 9000 16.3 12.2 134 16.9 12.6 134 TRIPLE PEAK 8500 14.6 11.5 127 16.5 10.9 151 ----- ----- Basin wide percent of average 123 128 LOWER GREEN RIVER HAMS FORK 7840 7.5 5.3 142 8.3 5.6 148 HEWINTA 9519 5.2 4.0 130 9.5 6.9 138 HICKERSON PARK 9145 2.9 2.8 104 4.8 4.1 117 HOLE-IN-ROCK 9150 2.8 2.6 108 5.3 3.8 139 INDIAN CREEK 9425 16.8 12.1 139 15.8 11.8 134 KELLEY R.S. 8180 11.1 7.4 150 13.6 9.8 139 STEEL CREEK PARK 10200 8.3 6.5 128 11.4 7.4 154 ----- ----- Basin wide percent of average 134 139 UPPER BEAR RIVER BUG LAKE 7950 15.2 8.0 190 17.1 8.9 192 HAYDEN FORK 9212 10.8 6.1 177 16.9 9.7 174 KELLEY R.S. 8180 11.1 7.4 150 13.6 9.8 139 LILY LAKE 9156 9.8 5.3 185 12.9 8.5 152 MONTE CRISTO 8960 18.1 10.6 171 18.9 11.8 160 SALT RIVER SUMMIT 7760 8.2 5.2 158 12.0 8.7 138 TRIAL LAKE 9992 21.0 10.2 206 19.3 10.9 177 ----- ----- Basin wide percent of average 178 162 ----------------------------------------------------------------------------- -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.