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 7 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.7 4.9 137 9.3 7.0 133 COTTONWOOD CREEK 7670 10.1 5.6 180 14.0 9.0 156 GRAND TARGHEE 9260 17.9 -M * 13.4 -M * GRANITE CREEK 6770 6.2 4.2 148 8.7 6.2 140 GRASSY LAKE 7265 10.2 9.0 113 13.5 11.1 122 GROS VENTRE SUMMIT 8750 5.7 4.5 127 6.0 4.7 128 GUNSIGHT PASS 9820 6.0 -M * 6.3 -M * LEWIS LAKE DIVIDE 7850 11.4 9.1 125 13.7 11.4 120 PHILLIPS BENCH 8200 11.1 7.6 146 12.6 8.6 147 SALT RIVER SUMMIT 7760 4.9 3.2 153 8.4 5.7 147 SNAKE RIVER STATION 6920 5.6 4.8 117 10.2 7.4 138 SPRING CREEK DIVIDE 9000 10.6 8.1 131 11.8 8.4 140 THUMB DIVIDE 7980 7.0 4.7 149 8.0 6.1 131 TOGWOTEE PASS 9580 10.6 7.9 134 11.6 8.2 141 TWO OCEAN PLATEAU 9240 13.6 9.4 145 11.0 9.3 118 WILLOW CREEK 8380 10.4 9.0 116 15.4 10.6 145 ----- ----- Basin wide percent of average 135 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 8.6 7.9 109 8.7 6.8 128 BLACK BEAR 8170 13.6 11.2 121 15.4 11.9 129 CANYON 7870 5.5 3.9 141 6.9 5.4 128 FISHER CREEK 9100 11.9 10.9 109 12.8 11.3 113 MADISON PLATEAU 7750 8.4 7.3 115 10.5 8.4 125 NORTHEAST ENTRANCE 7350 3.2 3.1 103 5.5 4.5 122 PARKER PEAK 9400 9.6 7.5 128 10.4 6.1 170 SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124 THUMB DIVIDE 7980 7.0 4.7 149 8.0 6.1 131 TWO OCEAN PLATEAU 9240 13.6 9.4 145 11.0 9.3 118 WHISKEY CREEK 6800 5.1 4.6 111 8.0 6.7 119 WHITE MILL 8700 8.5 7.7 110 9.7 8.8 110 WOLVERINE 7650 4.5 3.6 125 5.4 5.0 108 ----- ----- Basin wide percent of average 120 124 WIND RIVER BURROUGHS CREEK 8750 4.9 4.6 107 5.4 5.5 98 CASTLE CREEK 8400 2.2 -M * 3.0 -M * COLD SPRINGS 9630 3.2 3.4 94 3.3 4.5 73 DEER PARK 9700 8.1 4.9 165 8.8 7.8 113 HOBBS PARK 10100 6.2 5.9 105 5.6 5.0 112 LITTLE WARM 9370 4.2 3.9 108 4.3 5.1 84 SOUTH PASS 9040 6.3 5.7 111 6.2 6.7 93 ST. LAWRENCE ALT 8620 2.1 2.9 72 2.9 3.7 78 TOGWOTEE PASS 9580 10.6 7.9 134 11.6 8.2 141 TOWNSEND CREEK 8700 3.6 3.2 113 5.3 4.8 110 ----- ----- Basin wide percent of average 116 104 BIGHORN BASIN BALD MTN. 9380 6.9 6.7 103 6.6 5.9 112 BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.6 83 BLACKWATER 9780 9.4 8.9 106 9.0 8.1 111 BONE SPRINGS DIV 9350 5.2 5.8 90 4.4 5.3 83 EVENING STAR 9200 9.9 9.7 102 11.5 9.2 125 GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85 KIRWIN 9550 5.1 4.6 111 5.5 4.5 122 MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59 MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.3 53 OWL CREEK 8975 1.6 2.0 80 2.0 2.4 83 POWDER RIVER PASS 9480 4.1 3.7 111 5.0 4.5 111 SHELL CREEK 9580 5.0 5.5 91 4.4 4.9 90 SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124 SYLVAN ROAD 7120 4.2 4.2 100 6.8 7.5 91 TIMBER CREEK 7950 1.7 2.5 68 2.2 3.2 69 YOUNTS PEAK 8350 6.5 5.5 118 6.0 5.8 103 ----- ----- Basin wide percent of average 97 98 SHOSHONE RIVER BLACKWATER 9780 9.4 8.9 106 9.0 8.1 111 EVENING STAR 9200 9.9 9.7 102 11.5 9.2 125 KIRWIN 9550 5.1 4.6 111 5.5 4.5 122 MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59 SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124 SYLVAN ROAD 7120 4.2 4.2 100 6.8 7.5 91 YOUNTS PEAK 8350 6.5 5.5 118 6.0 5.8 103 ----- ----- Basin wide percent of average 99 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.6 83 BIG GOOSE 7990 1.6 2.7 59 3.3 3.4 97 BONE SPRINGS DIV 9350 5.2 5.8 90 4.4 5.3 83 BURGESS JUNCTION 7880 2.5 3.8 66 3.9 4.6 85 CLOUD PEAK RESERVOIR 9860 4.7 4.1 115 5.6 5.2 108 DOME LAKE 8880 2.0 4.6 43 4.1 5.3 77 GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85 HANSEN SAWMILL 8360 1.5 2.3 65 2.0 3.4 59 LITTLE GOOSE 8870 2.1 -M * 5.6 -M * MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.3 53 POWDER RIVER PASS 9480 4.1 3.7 111 5.0 4.5 111 SOLDIER PARK 8720 1.2 -M * 2.8 -M * SUCKER CREEK 8880 3.5 3.5 100 3.9 4.9 80 TIE CREEK 6870 1.5 1.2 125 3.1 4.0 78 ----- ----- Basin wide percent of average 87 83 BELLE FOURCHE BLIND PARK 6890 1.4 2.2 64 6.7 4.8 140 COLE CANYON 5910 2.2 2.3 96 4.2 3.2 131 NORTH RAPID CREEK 6130 2.0 2.0 100 5.9 4.1 144 ----- ----- Basin wide percent of average 86 139 UPPER N. PLATTE RIVER COLUMBINE 9160 9.3 5.9 158 12.7 7.4 172 DIVIDE PEAK 8880 6.7 5.8 116 10.2 7.0 146 ELK RIVER 8700 5.4 3.8 142 8.9 5.9 151 JOE WRIGHT 10120 10.4 6.9 151 15.0 8.6 174 NORTH FRENCH CREEK 10130 14.6 8.9 164 15.1 8.3 182 OLD BATTLE 10000 12.9 10.3 125 15.0 10.6 142 SAGE CREEK BASIN 7850 3.9 3.4 115 7.0 4.0 175 SOUTH BRUSH CREEK 8440 6.1 3.3 185 9.4 5.7 165 TOWER 10500 17.5 14.3 122 19.8 12.1 164 WEBBER SPRINGS 9250 8.4 7.6 111 12.6 8.8 143 WILLOW CREEK PASS 9540 6.2 4.0 155 7.4 4.8 154 ----- ----- Basin wide percent of average 137 160 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.2 6.9 133 10.7 7.0 153 CASPER MTN. 7900 3.4 5.1 67 6.1 5.7 107 DEADMAN HILL 10220 5.6 5.5 102 10.1 5.8 174 DEER PARK 9700 8.1 4.9 165 8.8 7.8 113 LAPRELE CREEK 8375 3.1 3.6 86 4.6 4.7 98 RENO HILL 8400 4.5 4.7 96 6.4 5.5 116 ROACH 9700 6.7 4.9 137 9.2 5.9 156 SAND LAKE 10050 13.2 10.4 127 12.9 8.0 161 SOUTH PASS 9040 6.3 5.7 111 6.2 6.7 93 WINDY PEAK 7900 2.5 2.6 96 4.9 4.1 120 ----- ----- Basin wide percent of average 115 131 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.1 2.2 141 5.7 4.9 116 DIVIDE PEAK 8880 6.7 5.8 116 10.2 7.0 146 OLD BATTLE 10000 12.9 10.3 125 15.0 10.6 142 SANDSTONE RS 8150 2.7 2.9 93 8.6 6.1 141 WHISKEY PARK 8950 9.2 7.0 131 12.9 8.9 145 ----- ----- Basin wide percent of average 123 140 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.0 4.6 109 5.8 4.7 123 BLIND BULL SUM 8650 9.2 8.3 111 6.7 7.4 91 EAST RIM DIVIDE 7930 3.6 3.8 95 4.1 3.9 105 ELKHART PARK G.S. 9400 3.5 4.1 85 4.3 4.9 88 GROS VENTRE SUMMIT 8750 5.7 4.5 127 6.0 4.7 128 GUNSIGHT PASS 9820 6.0 -M * 6.3 -M * KENDALL R.S. 7740 3.4 3.9 87 5.2 4.6 113 LOOMIS PARK 8240 5.7 5.1 112 6.6 5.6 118 NEW FORK LAKE 8340 3.6 3.3 109 3.7 4.2 88 POCKET CREEK 9360 4.2 -M * 5.3 -M * SNIDER BASIN 8060 6.4 4.3 149 7.5 5.1 147 SPRING CREEK DIVIDE 9000 10.6 8.1 131 11.8 8.4 140 TRIPLE PEAK 8500 9.5 7.5 127 11.6 7.4 157 ----- ----- Basin wide percent of average 115 120 LOWER GREEN RIVER HAMS FORK 7840 4.3 3.1 139 5.6 4.0 140 HEWINTA 9519 2.1 2.5 84 6.2 5.4 115 HICKERSON PARK 9145 1.3 1.7 76 3.4 3.4 100 HOLE-IN-ROCK 9150 1.5 1.7 88 3.7 3.2 116 INDIAN CREEK 9425 10.9 7.8 140 10.7 8.0 134 KELLEY R.S. 8180 6.9 4.9 141 9.5 6.5 146 STEEL CREEK PARK 10200 4.1 4.5 91 7.3 5.7 128 ----- ----- Basin wide percent of average 119 128 UPPER BEAR RIVER BUG LAKE 7950 7.7 4.8 160 10.5 6.4 164 HAYDEN FORK 9212 4.9 3.6 136 11.2 6.9 162 KELLEY R.S. 8180 6.9 4.9 141 9.5 6.5 146 LILY LAKE 9156 5.2 3.4 153 8.5 6.3 135 MONTE CRISTO 8960 10.5 6.2 169 13.1 8.3 158 SALT RIVER SUMMIT 7760 4.9 3.2 153 8.4 5.7 147 TRIAL LAKE 9992 10.2 6.5 157 12.4 7.6 163 ----- ----- Basin wide percent of average 154 154 ----------------------------------------------------------------------------- -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.