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 2 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.1 4.2 121 7.7 6.2 124 COTTONWOOD CREEK 7670 8.7 4.8 181 12.6 8.2 154 GRAND TARGHEE 9260 15.9 -M * 12.1 -M * GRANITE CREEK 6770 4.4 3.6 122 6.9 5.5 125 GRASSY LAKE 7265 7.8 7.9 99 11.2 9.9 113 GROS VENTRE SUMMIT 8750 5.0 4.0 125 5.4 4.3 126 GUNSIGHT PASS 9820 5.2 -M * 5.7 -M * LEWIS LAKE DIVIDE 7850 8.5 7.9 108 11.3 10.1 112 PHILLIPS BENCH 8200 9.5 6.6 144 11.1 7.6 146 SALT RIVER SUMMIT 7760 4.2 2.7 156 7.5 5.1 147 SNAKE RIVER STATION 6920 4.2 4.2 100 8.5 6.6 129 SPRING CREEK DIVIDE 9000 8.7 7.0 124 9.9 7.5 132 THUMB DIVIDE 7980 6.0 4.1 146 7.1 5.5 129 TOGWOTEE PASS 9580 9.2 7.2 128 10.2 7.4 138 TWO OCEAN PLATEAU 9240 11.0 8.5 129 9.1 8.4 108 WILLOW CREEK 8380 8.8 7.9 111 13.9 9.6 145 ----- ----- Basin wide percent of average 125 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.0 7.2 97 7.2 6.0 120 BLACK BEAR 8170 11.6 9.9 117 13.5 10.7 126 CANYON 7870 4.3 3.4 126 5.8 4.9 118 FISHER CREEK 9100 9.8 9.6 102 10.8 10.1 107 MADISON PLATEAU 7750 7.4 6.4 116 9.5 7.4 128 NORTHEAST ENTRANCE 7350 2.8 2.6 108 5.0 4.1 122 PARKER PEAK 9400 8.1 6.9 117 8.9 5.6 159 SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118 THUMB DIVIDE 7980 6.0 4.1 146 7.1 5.5 129 TWO OCEAN PLATEAU 9240 11.0 8.5 129 9.1 8.4 108 WHISKEY CREEK 6800 4.5 4.0 113 7.3 6.0 122 WHITE MILL 8700 7.0 6.8 103 8.2 7.9 104 WOLVERINE 7650 3.8 3.0 127 4.7 4.6 102 ----- ----- Basin wide percent of average 113 119 WIND RIVER BURROUGHS CREEK 8750 3.5 3.9 90 4.1 5.0 82 CASTLE CREEK 8400 1.7 -M * 2.4 -M * COLD SPRINGS 9630 2.9 3.2 91 3.1 4.3 72 DEER PARK 9700 6.6 4.6 143 7.4 7.2 103 HOBBS PARK 10100 5.4 5.3 102 5.1 4.7 109 LITTLE WARM 9370 3.8 3.5 109 3.7 4.7 79 SOUTH PASS 9040 5.1 5.0 102 5.1 6.1 84 ST. LAWRENCE ALT 8620 2.0 2.7 74 2.7 3.6 75 TOGWOTEE PASS 9580 9.2 7.2 128 10.2 7.4 138 TOWNSEND CREEK 8700 3.3 3.0 110 5.2 4.6 113 ----- ----- Basin wide percent of average 109 98 BIGHORN BASIN BALD MTN. 9380 6.8 6.1 111 6.3 5.4 117 BEAR TRAP MEADOW 8200 1.4 1.7 82 2.9 3.4 85 BLACKWATER 9780 7.9 8.0 99 7.6 7.4 103 BONE SPRINGS DIV 9350 5.0 5.4 93 4.1 5.0 82 EVENING STAR 9200 8.0 8.8 91 9.6 8.4 114 GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89 KIRWIN 9550 3.9 4.2 93 4.3 4.2 102 MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61 MIDDLE POWDER 7760 3.6 3.6 100 2.9 5.0 58 OWL CREEK 8975 1.4 1.9 74 1.9 2.2 86 POWDER RIVER PASS 9480 3.8 3.4 112 4.7 4.2 112 SHELL CREEK 9580 4.8 5.2 92 4.4 4.6 96 SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118 SYLVAN ROAD 7120 3.4 3.7 92 6.0 6.7 90 TIMBER CREEK 7950 1.5 2.4 63 2.0 3.0 67 YOUNTS PEAK 8350 5.2 4.8 108 4.8 5.3 91 ----- ----- Basin wide percent of average 92 95 SHOSHONE RIVER BLACKWATER 9780 7.9 8.0 99 7.6 7.4 103 EVENING STAR 9200 8.0 8.8 91 9.6 8.4 114 KIRWIN 9550 3.9 4.2 93 4.3 4.2 102 MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61 SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118 SYLVAN ROAD 7120 3.4 3.7 92 6.0 6.7 90 YOUNTS PEAK 8350 5.2 4.8 108 4.8 5.3 91 ----- ----- Basin wide percent of average 89 100 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.4 1.7 82 2.9 3.4 85 BIG GOOSE 7990 1.4 2.4 58 3.1 3.1 100 BONE SPRINGS DIV 9350 5.0 5.4 93 4.1 5.0 82 BURGESS JUNCTION 7880 2.3 3.5 66 3.8 4.3 88 CLOUD PEAK RESERVOIR 9860 4.4 3.9 113 5.2 5.0 104 DOME LAKE 8880 1.9 4.2 45 4.0 5.0 80 GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89 HANSEN SAWMILL 8360 1.3 2.1 62 1.9 3.2 59 LITTLE GOOSE 8870 1.9 -M * 5.4 -M * MIDDLE POWDER 7760 3.6 3.6 100 2.9 5.0 58 POWDER RIVER PASS 9480 3.8 3.4 112 4.7 4.2 112 SOLDIER PARK 8720 1.1 -M * 2.6 -M * SUCKER CREEK 8880 3.3 3.3 100 3.8 4.6 83 TIE CREEK 6870 1.5 1.2 125 3.0 3.7 81 ----- ----- Basin wide percent of average 87 85 BELLE FOURCHE BLIND PARK 6890 1.4 2.0 70 6.7 4.6 146 COLE CANYON 5910 2.3 2.2 105 4.1 3.0 137 NORTH RAPID CREEK 6130 2.0 1.8 111 5.8 3.8 153 ----- ----- Basin wide percent of average 95 146 UPPER N. PLATTE RIVER COLUMBINE 9160 8.8 5.1 173 12.1 6.5 186 DIVIDE PEAK 8880 5.0 5.2 96 8.5 6.3 135 ELK RIVER 8700 5.0 3.2 156 8.4 5.3 158 JOE WRIGHT 10120 9.6 6.4 150 14.2 7.9 180 NORTH FRENCH CREEK 10130 11.9 8.0 149 12.7 7.6 167 OLD BATTLE 10000 10.8 9.3 116 12.8 9.5 135 SAGE CREEK BASIN 7850 2.9 3.0 97 6.0 3.7 162 SOUTH BRUSH CREEK 8440 5.1 2.9 176 8.3 5.3 157 TOWER 10500 16.1 12.9 125 18.6 10.9 171 WEBBER SPRINGS 9250 6.9 6.8 101 11.0 7.9 139 WILLOW CREEK PASS 9540 6.3 3.7 170 7.2 4.4 164 ----- ----- Basin wide percent of average 133 159 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.1 6.1 116 8.8 6.4 138 CASPER MTN. 7900 3.0 4.7 64 5.8 5.3 109 DEADMAN HILL 10220 5.6 5.1 110 9.6 5.4 178 DEER PARK 9700 6.6 4.6 143 7.4 7.2 103 LAPRELE CREEK 8375 2.7 3.3 82 4.3 4.3 100 RENO HILL 8400 4.2 4.3 98 6.2 5.2 119 ROACH 9700 6.2 4.4 141 8.8 5.3 166 SAND LAKE 10050 11.6 9.4 123 11.3 7.3 155 SOUTH PASS 9040 5.1 5.0 102 5.1 6.1 84 WINDY PEAK 7900 2.2 2.3 96 4.6 3.8 121 ----- ----- Basin wide percent of average 110 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.8 1.9 147 5.4 4.5 120 DIVIDE PEAK 8880 5.0 5.2 96 8.5 6.3 135 OLD BATTLE 10000 10.8 9.3 116 12.8 9.5 135 SANDSTONE RS 8150 2.1 2.4 88 7.7 5.6 138 WHISKEY PARK 8950 4.9 6.3 78 11.4 8.0 143 ----- ----- Basin wide percent of average 102 135 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 4.1 102 5.1 4.4 116 BLIND BULL SUM 8650 7.6 7.3 104 5.4 6.6 82 EAST RIM DIVIDE 7930 3.1 3.3 94 3.6 3.6 100 ELKHART PARK G.S. 9400 3.0 3.6 83 3.8 4.5 84 GROS VENTRE SUMMIT 8750 5.0 4.0 125 5.4 4.3 126 GUNSIGHT PASS 9820 5.2 -M * 5.7 -M * KENDALL R.S. 7740 2.6 3.3 79 4.4 4.2 105 LOOMIS PARK 8240 4.7 4.5 104 5.7 5.0 114 NEW FORK LAKE 8340 3.2 2.9 110 3.4 3.9 87 POCKET CREEK 9360 3.5 -M * 4.7 -M * SNIDER BASIN 8060 5.3 3.7 143 6.4 4.6 139 SPRING CREEK DIVIDE 9000 8.7 7.0 124 9.9 7.5 132 TRIPLE PEAK 8500 7.6 6.5 117 9.9 6.7 148 ----- ----- Basin wide percent of average 110 114 LOWER GREEN RIVER HAMS FORK 7840 3.4 2.6 131 5.3 3.6 147 HEWINTA 9519 1.3 2.2 59 5.7 5.0 114 HICKERSON PARK 9145 1.0 1.5 67 3.1 3.3 94 HOLE-IN-ROCK 9150 1.7 1.5 113 3.6 3.0 120 INDIAN CREEK 9425 8.8 6.9 128 9.1 7.1 128 KELLEY R.S. 8180 5.7 4.3 133 8.2 5.8 141 STEEL CREEK PARK 10200 3.6 4.1 88 6.9 5.2 133 ----- ----- Basin wide percent of average 110 127 UPPER BEAR RIVER BUG LAKE 7950 6.3 4.2 150 9.3 5.8 160 HAYDEN FORK 9212 4.3 3.2 134 10.4 6.3 165 KELLEY R.S. 8180 5.7 4.3 133 8.2 5.8 141 LILY LAKE 9156 4.3 3.0 143 8.0 5.8 138 MONTE CRISTO 8960 9.1 5.4 169 12.0 7.4 162 SALT RIVER SUMMIT 7760 4.2 2.7 156 7.5 5.1 147 TRIAL LAKE 9992 9.3 5.8 160 11.5 6.9 167 ----- ----- Basin wide percent of average 151 155 ----------------------------------------------------------------------------- -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.