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 SATURDAY: DECEMBER 11 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.3 5.4 135 10.0 7.6 132 COTTONWOOD CREEK 7670 10.9 6.3 173 14.9 9.8 152 GRAND TARGHEE 9260 18.7 -M * 14.0 -M * GRANITE CREEK 6770 6.9 4.7 147 9.4 6.8 138 GRASSY LAKE 7265 11.2 9.9 113 14.4 12.0 120 GROS VENTRE SUMMIT 8750 6.4 4.9 131 6.5 5.0 130 GUNSIGHT PASS 9820 6.7 -M * 7.0 -M * LEWIS LAKE DIVIDE 7850 12.7 10.0 127 14.9 12.4 120 PHILLIPS BENCH 8200 12.0 8.5 141 13.5 9.4 144 SALT RIVER SUMMIT 7760 5.4 3.5 154 9.0 6.2 145 SNAKE RIVER STATION 6920 6.0 5.4 111 10.9 8.0 136 SPRING CREEK DIVIDE 9000 11.7 8.8 133 12.7 9.2 138 THUMB DIVIDE 7980 7.6 5.2 146 8.6 6.6 130 TOGWOTEE PASS 9580 11.7 8.5 138 12.7 8.9 143 TWO OCEAN PLATEAU 9240 14.8 10.0 148 11.7 10.0 117 WILLOW CREEK 8380 11.3 9.9 114 16.3 11.4 143 ----- ----- Basin wide percent of average 135 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 9.2 8.5 108 9.2 7.3 126 BLACK BEAR 8170 15.1 12.3 123 16.6 12.8 130 CANYON 7870 6.0 4.2 143 7.1 5.8 122 FISHER CREEK 9100 12.7 11.9 107 13.3 12.2 109 MADISON PLATEAU 7750 9.4 7.9 119 11.4 9.1 125 NORTHEAST ENTRANCE 7350 3.6 3.4 106 5.8 4.9 118 PARKER PEAK 9400 10.0 8.0 125 10.7 6.5 165 SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124 THUMB DIVIDE 7980 7.6 5.2 146 8.6 6.6 130 TWO OCEAN PLATEAU 9240 14.8 10.0 148 11.7 10.0 117 WHISKEY CREEK 6800 5.9 5.1 116 8.7 7.2 121 WHITE MILL 8700 9.2 8.3 111 10.4 9.6 108 WOLVERINE 7650 5.0 3.9 128 5.4 5.4 100 ----- ----- Basin wide percent of average 121 122 WIND RIVER BURROUGHS CREEK 8750 -M 5.0 * 5.9 5.9 100 CASTLE CREEK 8400 2.4 -M * 3.1 -M * COLD SPRINGS 9630 3.4 3.7 92 3.4 4.7 72 DEER PARK 9700 8.6 5.2 165 9.5 8.3 114 HOBBS PARK 10100 6.5 6.3 103 5.7 5.2 110 LITTLE WARM 9370 4.6 4.2 110 4.6 5.3 87 SOUTH PASS 9040 6.8 6.4 106 6.2 7.2 86 ST. LAWRENCE ALT 8620 2.0 3.1 65 2.9 3.9 74 TOGWOTEE PASS 9580 11.7 8.5 138 12.7 8.9 143 TOWNSEND CREEK 8700 3.5 3.5 100 5.3 5.1 104 ----- ----- Basin wide percent of average 115 103 BIGHORN BASIN BALD MTN. 9380 7.7 7.0 110 6.4 6.3 102 BEAR TRAP MEADOW 8200 1.8 2.0 90 3.0 3.8 79 BLACKWATER 9780 10.7 9.5 113 10.0 8.6 116 BONE SPRINGS DIV 9350 5.6 6.0 93 4.4 5.7 77 EVENING STAR 9200 11.1 10.5 106 12.7 9.8 130 GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.0 85 KIRWIN 9550 5.5 4.9 112 5.9 4.7 126 MARQUETTE 8760 1.3 4.2 31 2.7 4.5 60 MIDDLE POWDER 7760 4.3 4.1 105 2.8 5.6 50 OWL CREEK 8975 1.6 2.2 73 2.0 2.4 83 POWDER RIVER PASS 9480 4.5 3.9 115 5.3 4.7 113 SHELL CREEK 9580 5.5 5.7 96 4.6 5.2 88 SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124 SYLVAN ROAD 7120 4.8 4.5 107 7.4 8.1 91 TIMBER CREEK 7950 1.7 2.5 68 2.2 3.3 67 YOUNTS PEAK 8350 7.0 5.9 119 6.4 6.1 105 ----- ----- Basin wide percent of average 100 98 SHOSHONE RIVER BLACKWATER 9780 10.7 9.5 113 10.0 8.6 116 EVENING STAR 9200 11.1 10.5 106 12.7 9.8 130 KIRWIN 9550 5.5 4.9 112 5.9 4.7 126 MARQUETTE 8760 1.3 4.2 31 2.7 4.5 60 SYLVAN LAKE 8420 7.8 7.8 100 10.5 8.5 124 SYLVAN ROAD 7120 4.8 4.5 107 7.4 8.1 91 YOUNTS PEAK 8350 7.0 5.9 119 6.4 6.1 105 ----- ----- Basin wide percent of average 102 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.8 2.0 90 3.0 3.8 79 BIG GOOSE 7990 1.9 3.0 63 3.4 3.6 94 BONE SPRINGS DIV 9350 5.6 6.0 93 4.4 5.7 77 BURGESS JUNCTION 7880 2.8 4.0 70 4.2 4.8 88 CLOUD PEAK RESERVOIR 9860 5.3 4.3 123 5.6 5.4 104 DOME LAKE 8880 2.3 4.7 49 4.3 5.6 77 GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.0 85 HANSEN SAWMILL 8360 1.6 2.5 64 2.3 3.6 64 LITTLE GOOSE 8870 2.5 -M * 5.9 -M * MIDDLE POWDER 7760 4.3 4.1 105 2.8 5.6 50 POWDER RIVER PASS 9480 4.5 3.9 115 5.3 4.7 113 SOLDIER PARK 8720 1.4 -M * 3.0 -M * SUCKER CREEK 8880 3.8 3.7 103 4.0 5.2 77 TIE CREEK 6870 1.7 1.4 121 3.3 4.2 79 ----- ----- Basin wide percent of average 90 82 BELLE FOURCHE BLIND PARK 6890 1.7 2.2 77 7.1 5.0 142 COLE CANYON 5910 2.3 2.5 92 4.4 3.3 133 NORTH RAPID CREEK 6130 2.4 2.2 109 6.0 4.3 140 ----- ----- Basin wide percent of average 93 139 UPPER N. PLATTE RIVER COLUMBINE 9160 10.3 6.5 158 13.6 8.0 170 DIVIDE PEAK 8880 6.9 6.3 110 10.5 7.5 140 ELK RIVER 8700 5.8 4.3 135 9.3 6.4 145 JOE WRIGHT 10120 10.8 7.3 148 15.6 9.1 171 NORTH FRENCH CREEK 10130 15.1 9.6 157 15.6 8.9 175 OLD BATTLE 10000 14.0 11.0 127 15.9 11.5 138 SAGE CREEK BASIN 7850 4.1 3.7 111 7.2 4.3 167 SOUTH BRUSH CREEK 8440 6.4 3.6 178 9.7 6.0 162 TOWER 10500 18.7 15.3 122 20.8 13.0 160 WEBBER SPRINGS 9250 9.0 8.3 108 13.3 9.5 140 WILLOW CREEK PASS 9540 6.7 4.3 156 7.7 5.1 151 ----- ----- Basin wide percent of average 134 156 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.6 7.5 128 11.2 7.5 149 CASPER MTN. 7900 3.4 5.4 63 6.2 6.0 103 DEADMAN HILL 10220 5.4 5.9 92 10.6 6.1 174 DEER PARK 9700 8.6 5.2 165 9.5 8.3 114 LAPRELE CREEK 8375 3.2 3.9 82 4.7 4.9 96 RENO HILL 8400 4.7 5.1 92 6.4 5.8 110 ROACH 9700 7.0 5.3 132 9.6 6.3 152 SAND LAKE 10050 13.8 11.2 123 13.4 8.6 156 SOUTH PASS 9040 6.8 6.4 106 6.2 7.2 86 WINDY PEAK 7900 2.6 2.8 93 5.0 4.3 116 ----- ----- Basin wide percent of average 111 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.4 2.4 142 5.8 5.3 109 DIVIDE PEAK 8880 6.9 6.3 110 10.5 7.5 140 OLD BATTLE 10000 14.0 11.0 127 15.9 11.5 138 SANDSTONE RS 8150 3.1 3.2 97 9.1 6.6 138 WHISKEY PARK 8950 5.3 7.6 70 13.8 9.6 144 ----- ----- Basin wide percent of average 107 136 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.3 5.0 106 6.2 5.1 122 BLIND BULL SUM 8650 10.2 9.1 112 7.4 8.1 91 EAST RIM DIVIDE 7930 4.2 4.1 102 4.6 4.2 110 ELKHART PARK G.S. 9400 4.1 4.4 93 4.8 5.2 92 GROS VENTRE SUMMIT 8750 6.4 4.9 131 6.5 5.0 130 GUNSIGHT PASS 9820 6.7 -M * 7.0 -M * KENDALL R.S. 7740 4.0 4.3 93 5.9 4.9 120 LOOMIS PARK 8240 6.4 5.6 114 7.3 6.0 122 NEW FORK LAKE 8340 4.1 3.7 111 4.2 4.5 93 POCKET CREEK 9360 4.5 -M * 5.6 -M * SNIDER BASIN 8060 7.0 4.7 149 8.0 5.6 143 SPRING CREEK DIVIDE 9000 11.7 8.8 133 12.7 9.2 138 TRIPLE PEAK 8500 10.4 8.2 127 12.5 8.0 156 ----- ----- Basin wide percent of average 118 122 LOWER GREEN RIVER HAMS FORK 7840 4.7 3.4 138 5.8 4.3 135 HEWINTA 9519 2.8 2.7 104 6.6 5.7 116 HICKERSON PARK 9145 1.4 1.9 74 3.5 3.6 97 HOLE-IN-ROCK 9150 1.6 1.8 89 3.9 3.3 118 INDIAN CREEK 9425 11.8 8.6 137 11.4 8.7 131 KELLEY R.S. 8180 7.5 5.4 139 10.0 7.1 141 STEEL CREEK PARK 10200 4.7 4.9 96 7.9 6.0 132 ----- ----- Basin wide percent of average 120 127 UPPER BEAR RIVER BUG LAKE 7950 8.6 5.3 162 11.4 6.9 165 HAYDEN FORK 9212 5.6 4.0 140 11.9 7.4 161 KELLEY R.S. 8180 7.5 5.4 139 10.0 7.1 141 LILY LAKE 9156 6.1 3.7 165 9.1 6.7 136 MONTE CRISTO 8960 11.2 6.9 162 13.8 8.9 155 SALT RIVER SUMMIT 7760 5.4 3.5 154 9.0 6.2 145 TRIAL LAKE 9992 11.2 7.1 158 13.2 8.2 161 ----- ----- Basin wide percent of average 155 153 ----------------------------------------------------------------------------- -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.