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 28 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.8 7.7 127 12.7 9.8 130 COTTONWOOD CREEK 7670 13.8 9.1 152 18.5 12.7 146 GRAND TARGHEE 9260 23.3 -M * 17.3 -M * GRANITE CREEK 6770 10.3 7.1 145 12.7 9.0 141 GRASSY LAKE 7265 15.3 13.8 111 18.5 16.3 113 GROS VENTRE SUMMIT 8750 8.2 6.5 126 8.2 6.1 134 GUNSIGHT PASS 9820 8.8 -M * 9.1 -M * LEWIS LAKE DIVIDE 7850 17.1 13.8 124 18.9 16.5 115 PHILLIPS BENCH 8200 15.6 11.9 131 17.1 12.7 135 SALT RIVER SUMMIT 7760 7.6 5.0 152 11.5 8.4 137 SNAKE RIVER STATION 6920 7.6 7.4 103 13.5 10.4 130 SPRING CREEK DIVIDE 9000 15.6 11.9 131 16.4 12.2 134 THUMB DIVIDE 7980 10.9 7.1 154 11.5 8.6 134 TOGWOTEE PASS 9580 14.5 11.0 132 15.6 11.4 137 TWO OCEAN PLATEAU 9240 18.4 12.8 144 15.0 12.8 117 WILLOW CREEK 8380 15.5 13.4 116 20.6 14.7 140 ----- ----- Basin wide percent of average 130 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.1 10.9 111 11.8 9.5 124 BLACK BEAR 8170 20.2 16.1 125 21.2 16.6 128 CANYON 7870 7.7 5.6 138 9.2 7.4 124 FISHER CREEK 9100 17.7 15.4 115 17.6 16.1 109 MADISON PLATEAU 7750 13.1 10.5 125 15.1 11.8 128 NORTHEAST ENTRANCE 7350 5.5 4.6 120 7.6 6.1 125 PARKER PEAK 9400 13.4 10.0 134 13.9 7.9 176 SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133 THUMB DIVIDE 7980 10.9 7.1 154 11.5 8.6 134 TWO OCEAN PLATEAU 9240 18.4 12.8 144 15.0 12.8 117 WHISKEY CREEK 6800 8.9 6.9 129 11.4 9.4 121 WHITE MILL 8700 12.4 10.6 117 13.6 12.2 111 WOLVERINE 7650 7.0 5.4 130 7.2 6.7 107 ----- ----- Basin wide percent of average 126 125 WIND RIVER BURROUGHS CREEK 8750 7.6 6.4 119 8.1 7.6 107 CASTLE CREEK 8400 3.3 -M * 4.0 -M * COLD SPRINGS 9630 4.5 4.5 100 4.5 5.5 82 DEER PARK 9700 11.4 6.2 184 12.3 10.5 117 HOBBS PARK 10100 7.9 7.4 107 7.1 6.2 115 LITTLE WARM 9370 6.2 5.1 122 6.5 6.4 102 SOUTH PASS 9040 9.1 7.8 117 8.3 8.8 94 ST. LAWRENCE ALT 8620 2.8 3.7 76 3.6 4.5 80 TOGWOTEE PASS 9580 14.5 11.0 132 15.6 11.4 137 TOWNSEND CREEK 8700 4.2 4.3 98 6.1 5.8 105 ----- ----- Basin wide percent of average 121 108 BIGHORN BASIN BALD MTN. 9380 9.8 9.3 105 9.0 8.1 111 BEAR TRAP MEADOW 8200 2.8 2.5 112 3.9 4.4 89 BLACKWATER 9780 13.6 11.4 119 12.8 10.4 123 BONE SPRINGS DIV 9350 7.3 7.5 97 7.0 7.0 100 EVENING STAR 9200 15.6 12.9 121 16.8 12.4 135 GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85 KIRWIN 9550 6.5 5.7 114 7.0 5.7 123 MARQUETTE 8760 1.3 4.8 27 3.2 5.2 62 MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50 OWL CREEK 8975 2.1 2.6 81 2.5 2.8 89 POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.7 123 SHELL CREEK 9580 6.9 7.0 99 5.9 6.4 92 SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133 SYLVAN ROAD 7120 7.8 5.8 134 10.6 9.8 108 TIMBER CREEK 7950 1.9 3.0 63 2.4 3.6 67 YOUNTS PEAK 8350 9.0 7.4 122 8.3 7.8 106 ----- ----- Basin wide percent of average 106 106 SHOSHONE RIVER BLACKWATER 9780 13.6 11.4 119 12.8 10.4 123 EVENING STAR 9200 15.6 12.9 121 16.8 12.4 135 KIRWIN 9550 6.5 5.7 114 7.0 5.7 123 MARQUETTE 8760 1.3 4.8 27 3.2 5.2 62 SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133 SYLVAN ROAD 7120 7.8 5.8 134 10.6 9.8 108 YOUNTS PEAK 8350 9.0 7.4 122 8.3 7.8 106 ----- ----- Basin wide percent of average 112 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.8 2.5 112 3.9 4.4 89 BIG GOOSE 7990 2.4 4.2 57 4.2 4.4 95 BONE SPRINGS DIV 9350 7.3 7.5 97 7.0 7.0 100 BURGESS JUNCTION 7880 3.3 5.3 62 4.8 5.9 81 CLOUD PEAK RESERVOIR 9860 6.4 5.5 116 7.0 6.2 113 DOME LAKE 8880 3.3 5.8 57 5.5 6.7 82 GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85 HANSEN SAWMILL 8360 2.5 3.1 81 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 5.7 123 SOLDIER PARK 8720 1.9 -M * 3.6 -M * SUCKER CREEK 8880 4.8 5.0 96 5.5 6.4 86 TIE CREEK 6870 2.0 2.4 83 3.8 4.9 78 ----- ----- Basin wide percent of average 89 88 BELLE FOURCHE BLIND PARK 6890 2.6 3.3 79 7.9 6.0 132 COLE CANYON 5910 2.6 3.2 81 5.1 3.8 134 NORTH RAPID CREEK 6130 2.7 3.1 87 6.7 5.1 131 ----- ----- Basin wide percent of average 82 132 UPPER N. PLATTE RIVER COLUMBINE 9160 14.5 9.3 156 17.7 10.8 164 DIVIDE PEAK 8880 10.9 8.6 127 14.4 9.5 152 ELK RIVER 8700 10.3 6.6 156 13.3 8.4 158 JOE WRIGHT 10120 14.3 9.2 155 19.1 11.4 168 NORTH FRENCH CREEK 10130 20.4 12.7 161 20.2 11.4 177 OLD BATTLE 10000 21.7 14.0 155 23.0 15.1 152 SAGE CREEK BASIN 7850 6.9 5.0 138 10.0 5.5 182 SOUTH BRUSH CREEK 8440 9.0 4.8 188 12.3 7.4 166 TOWER 10500 26.6 19.6 136 27.2 16.9 161 WEBBER SPRINGS 9250 14.8 10.9 136 19.2 12.4 155 WILLOW CREEK PASS 9540 9.9 5.3 187 10.4 6.2 168 ----- ----- Basin wide percent of average 150 162 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.2 10.1 141 15.7 9.6 164 CASPER MTN. 7900 5.0 6.7 75 7.9 7.0 113 DEADMAN HILL 10220 5.9 7.3 81 13.3 7.5 177 DEER PARK 9700 11.4 6.2 184 12.3 10.5 117 LAPRELE CREEK 8375 5.1 5.1 100 6.4 5.9 108 RENO HILL 8400 6.4 6.3 102 8.2 6.9 119 ROACH 9700 11.0 6.9 159 13.7 8.0 171 SAND LAKE 10050 18.3 14.2 129 17.7 11.0 161 SOUTH PASS 9040 9.1 7.8 117 8.3 8.8 94 WINDY PEAK 7900 3.9 3.4 115 6.4 5.3 121 ----- ----- Basin wide percent of average 122 137 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.8 3.7 157 8.1 6.8 119 DIVIDE PEAK 8880 10.9 8.6 127 14.4 9.5 152 OLD BATTLE 10000 21.7 14.0 155 23.0 15.1 152 SANDSTONE RS 8150 6.1 4.8 127 13.0 8.4 155 WHISKEY PARK 8950 -M 10.3 * 20.0 12.4 161 ----- ----- Basin wide percent of average 143 150 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.3 6.6 111 8.0 6.3 127 BLIND BULL SUM 8650 13.6 12.4 110 10.4 10.5 99 EAST RIM DIVIDE 7930 6.1 5.6 109 6.5 5.4 120 ELKHART PARK G.S. 9400 6.0 6.0 100 6.7 6.4 105 GROS VENTRE SUMMIT 8750 8.2 6.5 126 8.2 6.1 134 GUNSIGHT PASS 9820 8.8 -M * 9.1 -M * KENDALL R.S. 7740 6.3 6.2 102 8.1 6.5 125 LOOMIS PARK 8240 9.2 7.6 121 10.2 7.9 129 NEW FORK LAKE 8340 5.8 5.1 114 5.7 5.6 102 POCKET CREEK 9360 6.1 -M * 7.4 -M * SNIDER BASIN 8060 9.6 6.5 148 10.2 7.5 136 SPRING CREEK DIVIDE 9000 15.6 11.9 131 16.4 12.2 134 TRIPLE PEAK 8500 14.1 11.2 126 16.0 10.5 152 ----- ----- Basin wide percent of average 119 125 LOWER GREEN RIVER HAMS FORK 7840 -M 5.1 * -M 5.5 * HEWINTA 9519 5.3 3.8 139 9.4 6.8 138 HICKERSON PARK 9145 2.5 2.7 93 4.4 4.1 107 HOLE-IN-ROCK 9150 2.6 2.5 104 5.2 3.8 137 INDIAN CREEK 9425 15.6 11.8 132 14.8 11.5 129 KELLEY R.S. 8180 10.0 7.2 139 12.6 9.5 133 STEEL CREEK PARK 10200 8.2 6.3 130 11.3 7.2 157 ----- ----- Basin wide percent of average 129 134 UPPER BEAR RIVER BUG LAKE 7950 13.9 7.7 181 16.3 8.7 187 HAYDEN FORK 9212 10.1 5.8 174 17.1 9.5 180 KELLEY R.S. 8180 10.0 7.2 139 12.6 9.5 133 LILY LAKE 9156 9.4 5.1 184 12.6 8.3 152 MONTE CRISTO 8960 17.0 10.2 167 18.9 11.5 164 SALT RIVER SUMMIT 7760 7.6 5.0 152 11.5 8.4 137 TRIAL LAKE 9992 19.3 9.8 197 19.1 10.6 180 ----- ----- Basin wide percent of average 172 163 ----------------------------------------------------------------------------- -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.