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 SUNDAY: DECEMBER 12 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.4 5.6 132 10.1 7.7 131 COTTONWOOD CREEK 7670 11.0 6.5 169 15.1 9.9 153 GRAND TARGHEE 9260 19.0 -M * 14.2 -M * GRANITE CREEK 6770 6.9 4.9 141 9.4 6.9 136 GRASSY LAKE 7265 11.4 10.1 113 14.6 12.3 119 GROS VENTRE SUMMIT 8750 6.5 5.0 130 6.6 5.1 129 GUNSIGHT PASS 9820 6.8 -M * 7.2 -M * LEWIS LAKE DIVIDE 7850 12.9 10.2 126 15.1 12.7 119 PHILLIPS BENCH 8200 12.1 8.7 139 13.6 9.6 142 SALT RIVER SUMMIT 7760 5.6 3.6 156 9.1 6.4 142 SNAKE RIVER STATION 6920 6.1 5.5 111 11.1 8.1 137 SPRING CREEK DIVIDE 9000 12.0 9.0 133 12.9 9.3 139 THUMB DIVIDE 7980 7.8 5.3 147 8.8 6.7 131 TOGWOTEE PASS 9580 11.8 8.7 136 12.8 9.0 142 TWO OCEAN PLATEAU 9240 15.0 10.2 147 11.7 10.2 115 WILLOW CREEK 8380 11.4 10.1 113 16.4 11.6 141 ----- ----- Basin wide percent of average 133 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 9.4 8.6 109 9.4 7.5 125 BLACK BEAR 8170 15.4 12.5 123 17.1 13.0 132 CANYON 7870 6.0 4.3 140 7.3 5.9 124 FISHER CREEK 9100 12.9 12.1 107 13.5 12.4 109 MADISON PLATEAU 7750 9.6 8.1 119 11.7 9.3 126 NORTHEAST ENTRANCE 7350 3.7 3.5 106 5.9 4.9 120 PARKER PEAK 9400 10.2 8.1 126 10.9 6.6 165 SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122 THUMB DIVIDE 7980 7.8 5.3 147 8.8 6.7 131 TWO OCEAN PLATEAU 9240 15.0 10.2 147 11.7 10.2 115 WHISKEY CREEK 6800 6.2 5.2 119 8.9 7.4 120 WHITE MILL 8700 9.4 8.4 112 10.5 9.7 108 WOLVERINE 7650 5.1 4.0 128 5.6 5.5 102 ----- ----- Basin wide percent of average 121 122 WIND RIVER BURROUGHS CREEK 8750 -M 5.1 * 6.0 6.0 100 CASTLE CREEK 8400 2.5 -M * 3.1 -M * COLD SPRINGS 9630 3.5 3.7 95 3.5 4.8 73 DEER PARK 9700 8.6 5.2 165 9.5 8.5 112 HOBBS PARK 10100 6.5 6.3 103 6.0 5.3 113 LITTLE WARM 9370 4.7 4.2 112 4.7 5.4 87 SOUTH PASS 9040 6.8 6.4 106 6.4 7.3 88 ST. LAWRENCE ALT 8620 2.1 3.2 66 3.0 3.9 77 TOGWOTEE PASS 9580 11.8 8.7 136 12.8 9.0 142 TOWNSEND CREEK 8700 3.5 3.5 100 5.5 5.1 108 ----- ----- Basin wide percent of average 115 104 BIGHORN BASIN BALD MTN. 9380 8.0 7.1 113 6.9 6.4 108 BEAR TRAP MEADOW 8200 1.9 2.0 95 2.9 3.8 76 BLACKWATER 9780 10.8 9.6 113 10.1 8.7 116 BONE SPRINGS DIV 9350 5.7 6.1 93 4.5 5.7 79 EVENING STAR 9200 11.3 10.7 106 12.9 10.0 129 GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.1 83 KIRWIN 9550 5.6 4.9 114 6.0 4.8 125 MARQUETTE 8760 1.4 4.2 33 2.8 4.6 61 MIDDLE POWDER 7760 4.3 4.1 105 2.7 5.6 48 OWL CREEK 8975 1.7 2.2 77 2.1 2.5 84 POWDER RIVER PASS 9480 4.7 3.9 121 5.5 4.8 115 SHELL CREEK 9580 5.5 5.8 95 4.8 5.3 91 SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122 SYLVAN ROAD 7120 4.9 4.6 107 7.5 8.2 91 TIMBER CREEK 7950 1.7 2.5 68 2.2 3.3 67 YOUNTS PEAK 8350 7.0 6.0 117 6.4 6.2 103 ----- ----- Basin wide percent of average 101 98 SHOSHONE RIVER BLACKWATER 9780 10.8 9.6 113 10.1 8.7 116 EVENING STAR 9200 11.3 10.7 106 12.9 10.0 129 KIRWIN 9550 5.6 4.9 114 6.0 4.8 125 MARQUETTE 8760 1.4 4.2 33 2.8 4.6 61 SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122 SYLVAN ROAD 7120 4.9 4.6 107 7.5 8.2 91 YOUNTS PEAK 8350 7.0 6.0 117 6.4 6.2 103 ----- ----- Basin wide percent of average 102 110 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.9 2.0 95 2.9 3.8 76 BIG GOOSE 7990 1.9 3.1 61 3.5 3.7 95 BONE SPRINGS DIV 9350 5.7 6.1 93 4.5 5.7 79 BURGESS JUNCTION 7880 2.9 4.1 71 4.2 4.9 86 CLOUD PEAK RESERVOIR 9860 5.4 4.4 123 5.4 5.5 98 DOME LAKE 8880 2.5 4.8 52 4.5 5.7 79 GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.1 83 HANSEN SAWMILL 8360 1.6 2.5 64 2.3 3.6 64 LITTLE GOOSE 8870 2.6 -M * 6.1 -M * MIDDLE POWDER 7760 4.3 4.1 105 2.7 5.6 48 POWDER RIVER PASS 9480 4.7 3.9 121 5.5 4.8 115 SOLDIER PARK 8720 1.4 -M * 3.0 -M * SUCKER CREEK 8880 4.0 3.8 105 4.2 5.3 79 TIE CREEK 6870 1.8 1.4 129 3.4 4.2 81 ----- ----- Basin wide percent of average 91 82 BELLE FOURCHE BLIND PARK 6890 1.6 2.3 70 7.0 5.1 137 COLE CANYON 5910 2.3 2.6 88 4.5 3.3 136 NORTH RAPID CREEK 6130 2.3 2.3 100 6.0 4.3 140 ----- ----- Basin wide percent of average 86 138 UPPER N. PLATTE RIVER COLUMBINE 9160 10.6 6.6 161 13.8 8.2 168 DIVIDE PEAK 8880 6.9 6.5 106 10.5 7.6 138 ELK RIVER 8700 5.8 4.4 132 9.3 6.5 143 JOE WRIGHT 10120 10.7 7.4 145 15.6 9.2 170 NORTH FRENCH CREEK 10130 15.2 9.8 155 15.6 9.1 171 OLD BATTLE 10000 14.1 11.2 126 15.9 11.7 136 SAGE CREEK BASIN 7850 4.1 3.8 108 7.3 4.4 166 SOUTH BRUSH CREEK 8440 6.4 3.7 173 9.6 6.1 157 TOWER 10500 19.0 15.6 122 21.0 13.3 158 WEBBER SPRINGS 9250 9.1 8.5 107 13.3 9.6 139 WILLOW CREEK PASS 9540 6.7 4.3 156 7.8 5.2 150 ----- ----- Basin wide percent of average 133 154 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.6 7.6 126 11.3 7.6 149 CASPER MTN. 7900 3.4 5.5 62 6.3 6.0 105 DEADMAN HILL 10220 6.0 5.9 102 10.5 6.2 169 DEER PARK 9700 8.6 5.2 165 9.5 8.5 112 LAPRELE CREEK 8375 3.2 4.0 80 4.7 4.9 96 RENO HILL 8400 4.6 5.1 90 6.5 5.8 112 ROACH 9700 7.0 5.3 132 9.6 6.4 150 SAND LAKE 10050 13.8 11.4 121 13.4 8.8 152 SOUTH PASS 9040 6.8 6.4 106 6.4 7.3 88 WINDY PEAK 7900 2.6 2.8 93 5.1 4.4 116 ----- ----- Basin wide percent of average 111 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.4 2.4 142 5.8 5.4 107 DIVIDE PEAK 8880 6.9 6.5 106 10.5 7.6 138 OLD BATTLE 10000 14.1 11.2 126 15.9 11.7 136 SANDSTONE RS 8150 3.0 3.3 91 9.2 6.7 137 WHISKEY PARK 8950 5.0 7.8 64 13.9 9.8 142 ----- ----- Basin wide percent of average 104 134 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.3 5.1 104 6.1 5.1 120 BLIND BULL SUM 8650 10.2 9.3 110 7.5 8.2 91 EAST RIM DIVIDE 7930 4.2 4.2 100 4.6 4.3 107 ELKHART PARK G.S. 9400 4.2 4.5 93 4.9 5.2 94 GROS VENTRE SUMMIT 8750 6.5 5.0 130 6.6 5.1 129 GUNSIGHT PASS 9820 6.8 -M * 7.2 -M * KENDALL R.S. 7740 4.1 4.4 93 5.9 5.0 118 LOOMIS PARK 8240 6.4 5.8 110 7.4 6.1 121 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 4.8 146 8.1 5.7 142 SPRING CREEK DIVIDE 9000 12.0 9.0 133 12.9 9.3 139 TRIPLE PEAK 8500 10.5 8.4 125 12.6 8.2 154 ----- ----- Basin wide percent of average 116 121 LOWER GREEN RIVER HAMS FORK 7840 4.7 3.5 134 5.9 4.3 137 HEWINTA 9519 2.9 2.8 104 6.7 5.8 116 HICKERSON PARK 9145 1.5 2.0 75 3.6 3.6 100 HOLE-IN-ROCK 9150 1.7 1.9 89 3.9 3.3 118 INDIAN CREEK 9425 11.9 8.8 135 11.5 8.8 131 KELLEY R.S. 8180 7.5 5.5 136 10.0 7.2 139 STEEL CREEK PARK 10200 4.8 4.9 98 8.0 6.0 133 ----- ----- Basin wide percent of average 119 127 UPPER BEAR RIVER BUG LAKE 7950 8.6 5.4 159 11.5 7.0 164 HAYDEN FORK 9212 5.6 4.1 137 12.0 7.6 158 KELLEY R.S. 8180 7.5 5.5 136 10.0 7.2 139 LILY LAKE 9156 6.2 3.8 163 9.1 6.8 134 MONTE CRISTO 8960 11.1 7.1 156 14.0 9.1 154 SALT RIVER SUMMIT 7760 5.6 3.6 156 9.1 6.4 142 TRIAL LAKE 9992 11.3 7.3 155 13.4 8.3 161 ----- ----- Basin wide percent of average 152 151 ----------------------------------------------------------------------------- -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.