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 9 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.1 5.2 137 9.5 7.3 130 COTTONWOOD CREEK 7670 10.2 6.0 170 14.2 9.4 151 GRAND TARGHEE 9260 18.1 -M * 13.6 -M * GRANITE CREEK 6770 6.3 4.5 140 8.7 6.5 134 GRASSY LAKE 7265 10.5 9.5 111 13.9 11.6 120 GROS VENTRE SUMMIT 8750 5.8 4.7 123 6.0 4.9 122 GUNSIGHT PASS 9820 6.1 -M * 6.5 -M * LEWIS LAKE DIVIDE 7850 11.9 9.5 125 14.2 11.9 119 PHILLIPS BENCH 8200 11.2 8.0 140 12.8 9.0 142 SALT RIVER SUMMIT 7760 4.9 3.4 144 8.4 6.0 140 SNAKE RIVER STATION 6920 5.8 5.1 114 10.6 7.7 138 SPRING CREEK DIVIDE 9000 10.8 8.4 129 11.9 8.8 135 THUMB DIVIDE 7980 7.2 5.0 144 8.3 6.4 130 TOGWOTEE PASS 9580 10.7 8.2 130 11.7 8.5 138 TWO OCEAN PLATEAU 9240 14.0 9.7 144 11.2 9.7 115 WILLOW CREEK 8380 10.5 9.4 112 15.5 11.0 141 ----- ----- Basin wide percent of average 131 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 8.8 8.3 106 8.8 7.0 126 BLACK BEAR 8170 14.3 11.7 122 16.1 12.4 130 CANYON 7870 5.7 4.0 143 7.1 5.6 127 FISHER CREEK 9100 12.1 11.4 106 12.9 11.7 110 MADISON PLATEAU 7750 8.9 7.6 117 11.0 8.8 125 NORTHEAST ENTRANCE 7350 3.4 3.2 106 5.7 4.7 121 PARKER PEAK 9400 9.8 7.7 127 10.6 6.3 168 SYLVAN LAKE 8420 7.5 7.6 99 10.1 8.3 122 THUMB DIVIDE 7980 7.2 5.0 144 8.3 6.4 130 TWO OCEAN PLATEAU 9240 14.0 9.7 144 11.2 9.7 115 WHISKEY CREEK 6800 5.5 4.8 115 8.2 7.0 117 WHITE MILL 8700 8.7 8.0 109 10.0 9.2 109 WOLVERINE 7650 4.6 3.8 121 5.5 5.2 106 ----- ----- Basin wide percent of average 119 123 WIND RIVER BURROUGHS CREEK 8750 -M 4.8 * 5.5 5.7 96 CASTLE CREEK 8400 2.3 -M * 3.1 -M * COLD SPRINGS 9630 3.3 3.6 92 3.4 4.6 74 DEER PARK 9700 8.0 5.0 160 8.9 8.1 110 HOBBS PARK 10100 6.2 6.1 102 5.7 5.1 112 LITTLE WARM 9370 4.3 4.0 108 4.4 5.2 85 SOUTH PASS 9040 6.4 5.9 108 6.3 6.9 91 ST. LAWRENCE ALT 8620 2.2 3.0 73 2.9 3.8 76 TOGWOTEE PASS 9580 10.7 8.2 130 11.7 8.5 138 TOWNSEND CREEK 8700 3.7 3.4 109 5.4 4.9 110 ----- ----- Basin wide percent of average 114 103 BIGHORN BASIN BALD MTN. 9380 6.9 6.9 100 6.4 6.1 105 BEAR TRAP MEADOW 8200 1.7 2.0 85 3.1 3.7 84 BLACKWATER 9780 10.0 9.2 109 9.4 8.3 113 BONE SPRINGS DIV 9350 5.2 5.9 88 4.4 5.5 80 EVENING STAR 9200 10.6 10.2 104 12.3 9.5 129 GRAVE SPRINGS 8550 2.8 2.9 97 3.3 3.9 85 KIRWIN 9550 5.2 4.7 111 5.6 4.6 122 MARQUETTE 8760 1.3 4.1 32 2.7 4.4 61 MIDDLE POWDER 7760 4.0 4.0 100 2.9 5.4 54 OWL CREEK 8975 1.7 2.1 81 2.1 2.4 88 POWDER RIVER PASS 9480 4.1 3.8 108 5.0 4.6 109 SHELL CREEK 9580 5.0 5.6 89 4.4 5.1 86 SYLVAN LAKE 8420 7.5 7.6 99 10.1 8.3 122 SYLVAN ROAD 7120 4.4 4.4 100 7.0 7.8 90 TIMBER CREEK 7950 1.8 2.5 72 2.2 3.2 69 YOUNTS PEAK 8350 6.6 5.7 116 6.2 6.0 103 ----- ----- Basin wide percent of average 97 98 SHOSHONE RIVER BLACKWATER 9780 10.0 9.2 109 9.4 8.3 113 EVENING STAR 9200 10.6 10.2 104 12.3 9.5 129 KIRWIN 9550 5.2 4.7 111 5.6 4.6 122 MARQUETTE 8760 1.3 4.1 32 2.7 4.4 61 SYLVAN LAKE 8420 7.5 7.6 99 10.1 8.3 122 SYLVAN ROAD 7120 4.4 4.4 100 7.0 7.8 90 YOUNTS PEAK 8350 6.6 5.7 116 6.2 6.0 103 ----- ----- Basin wide percent of average 99 109 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 2.0 85 3.1 3.7 84 BIG GOOSE 7990 1.6 2.9 55 3.4 3.5 97 BONE SPRINGS DIV 9350 5.2 5.9 88 4.4 5.5 80 BURGESS JUNCTION 7880 2.6 3.8 68 4.0 4.7 85 CLOUD PEAK RESERVOIR 9860 4.9 4.2 117 5.8 5.3 109 DOME LAKE 8880 2.2 4.7 47 4.2 5.5 76 GRAVE SPRINGS 8550 2.8 2.9 97 3.3 3.9 85 HANSEN SAWMILL 8360 1.7 2.4 71 2.1 3.5 60 LITTLE GOOSE 8870 2.2 -M * 5.7 -M * MIDDLE POWDER 7760 4.0 4.0 100 2.9 5.4 54 POWDER RIVER PASS 9480 4.1 3.8 108 5.0 4.6 109 SOLDIER PARK 8720 1.2 -M * 2.8 -M * SUCKER CREEK 8880 3.6 3.6 100 4.0 5.1 78 TIE CREEK 6870 1.6 1.3 123 3.2 4.1 78 ----- ----- Basin wide percent of average 87 83 BELLE FOURCHE BLIND PARK 6890 1.7 2.2 77 6.8 4.9 139 COLE CANYON 5910 2.3 2.4 96 4.2 3.2 131 NORTH RAPID CREEK 6130 2.2 2.1 105 6.0 4.2 143 ----- ----- Basin wide percent of average 93 138 UPPER N. PLATTE RIVER COLUMBINE 9160 9.5 6.2 153 12.8 7.7 166 DIVIDE PEAK 8880 6.8 6.1 111 10.4 7.2 144 ELK RIVER 8700 5.5 4.0 138 9.1 6.1 149 JOE WRIGHT 10120 10.7 7.1 151 15.3 8.8 174 NORTH FRENCH CREEK 10130 14.8 9.3 159 15.4 8.6 179 OLD BATTLE 10000 13.3 10.6 125 15.3 11.1 138 SAGE CREEK BASIN 7850 4.0 3.5 114 7.2 4.2 171 SOUTH BRUSH CREEK 8440 6.4 3.5 183 9.7 5.9 164 TOWER 10500 18.0 14.8 122 20.3 12.5 162 WEBBER SPRINGS 9250 8.5 8.0 106 12.8 9.1 141 WILLOW CREEK PASS 9540 6.4 4.1 156 7.5 4.9 153 ----- ----- Basin wide percent of average 135 158 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.2 7.2 128 10.9 7.2 151 CASPER MTN. 7900 3.4 5.3 64 6.2 5.8 107 DEADMAN HILL 10220 5.5 5.7 96 10.2 6.0 170 DEER PARK 9700 8.0 5.0 160 8.9 8.1 110 LAPRELE CREEK 8375 3.3 3.8 87 4.7 4.8 98 RENO HILL 8400 4.6 4.9 94 6.5 5.7 114 ROACH 9700 6.7 5.1 131 9.2 6.1 151 SAND LAKE 10050 13.4 10.8 124 13.2 8.3 159 SOUTH PASS 9040 6.4 5.9 108 6.3 6.9 91 WINDY PEAK 7900 2.6 2.7 96 4.9 4.2 117 ----- ----- Basin wide percent of average 112 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.3 2.3 143 5.8 5.1 114 DIVIDE PEAK 8880 6.8 6.1 111 10.4 7.2 144 OLD BATTLE 10000 13.3 10.6 125 15.3 11.1 138 SANDSTONE RS 8150 2.8 3.0 93 8.9 6.3 141 WHISKEY PARK 8950 -M 7.3 * 13.3 9.3 143 ----- ----- Basin wide percent of average 119 138 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.1 4.8 106 5.9 4.9 120 BLIND BULL SUM 8650 9.2 8.7 106 6.9 7.7 90 EAST RIM DIVIDE 7930 3.7 3.9 95 4.2 4.1 102 ELKHART PARK G.S. 9400 3.6 4.3 84 4.3 5.0 86 GROS VENTRE SUMMIT 8750 5.8 4.7 123 6.0 4.9 122 GUNSIGHT PASS 9820 6.1 -M * 6.5 -M * KENDALL R.S. 7740 3.5 4.1 85 5.3 4.7 113 LOOMIS PARK 8240 5.8 5.4 107 6.7 5.8 116 NEW FORK LAKE 8340 3.7 3.5 106 3.9 4.3 91 POCKET CREEK 9360 4.2 -M * 5.3 -M * SNIDER BASIN 8060 6.5 4.5 144 7.6 5.3 143 SPRING CREEK DIVIDE 9000 10.8 8.4 129 11.9 8.8 135 TRIPLE PEAK 8500 9.6 7.8 123 11.8 7.7 153 ----- ----- Basin wide percent of average 112 118 LOWER GREEN RIVER HAMS FORK 7840 4.3 3.2 134 5.8 4.1 141 HEWINTA 9519 2.3 2.6 88 6.3 5.5 115 HICKERSON PARK 9145 1.3 1.8 72 3.4 3.5 97 HOLE-IN-ROCK 9150 1.5 1.8 83 3.7 3.2 116 INDIAN CREEK 9425 11.1 8.2 135 10.9 8.3 131 KELLEY R.S. 8180 7.0 5.2 135 9.6 6.8 141 STEEL CREEK PARK 10200 4.3 4.7 91 7.4 5.8 128 ----- ----- Basin wide percent of average 116 127 UPPER BEAR RIVER BUG LAKE 7950 7.7 5.0 154 10.7 6.7 160 HAYDEN FORK 9212 4.9 3.8 129 11.2 7.2 156 KELLEY R.S. 8180 7.0 5.2 135 9.6 6.8 141 LILY LAKE 9156 5.4 3.5 154 8.6 6.5 132 MONTE CRISTO 8960 10.6 6.5 163 13.3 8.6 155 SALT RIVER SUMMIT 7760 4.9 3.4 144 8.4 6.0 140 TRIAL LAKE 9992 10.3 6.8 151 12.5 7.9 158 ----- ----- Basin wide percent of average 149 149 ----------------------------------------------------------------------------- -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.