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 18 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.0 6.3 127 11.0 8.5 129 COTTONWOOD CREEK 7670 11.9 7.4 161 16.3 11.0 148 GRAND TARGHEE 9260 20.6 -M * 15.6 -M * GRANITE CREEK 6770 7.4 5.7 130 9.9 7.7 129 GRASSY LAKE 7265 13.0 11.5 113 16.1 13.8 117 GROS VENTRE SUMMIT 8750 6.9 5.6 123 6.8 5.5 124 GUNSIGHT PASS 9820 7.2 -M * 7.7 -M * LEWIS LAKE DIVIDE 7850 14.6 11.5 127 16.5 14.1 117 PHILLIPS BENCH 8200 12.9 9.9 130 14.2 10.7 133 SALT RIVER SUMMIT 7760 6.0 4.1 146 9.8 7.1 138 SNAKE RIVER STATION 6920 6.3 6.2 102 12.0 9.0 133 SPRING CREEK DIVIDE 9000 12.9 10.1 128 13.9 10.4 134 THUMB DIVIDE 7980 8.6 6.0 143 9.5 7.4 128 TOGWOTEE PASS 9580 12.7 9.5 134 13.8 9.9 139 TWO OCEAN PLATEAU 9240 16.6 11.2 148 13.5 11.2 121 WILLOW CREEK 8380 12.9 11.4 113 18.0 12.8 141 ----- ----- Basin wide percent of average 129 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.6 9.5 112 10.3 8.3 124 BLACK BEAR 8170 17.0 13.9 122 18.4 14.4 128 CANYON 7870 6.6 4.8 138 8.1 6.4 127 FISHER CREEK 9100 15.0 13.3 113 15.3 13.9 110 MADISON PLATEAU 7750 10.8 9.0 120 12.8 10.3 124 NORTHEAST ENTRANCE 7350 4.4 3.9 113 6.6 5.4 122 PARKER PEAK 9400 11.8 8.8 134 -M 7.1 * SYLVAN LAKE 8420 9.6 8.7 110 12.5 9.5 132 THUMB DIVIDE 7980 8.6 6.0 143 9.5 7.4 128 TWO OCEAN PLATEAU 9240 16.6 11.2 148 13.5 11.2 121 WHISKEY CREEK 6800 6.9 5.9 117 9.6 8.1 119 WHITE MILL 8700 10.8 9.3 116 11.6 10.7 108 WOLVERINE 7650 6.1 4.4 139 6.1 6.0 102 ----- ----- Basin wide percent of average 124 120 WIND RIVER BURROUGHS CREEK 8750 6.4 5.4 119 6.8 6.6 103 CASTLE CREEK 8400 2.5 -M * 3.0 -M * COLD SPRINGS 9630 3.5 4.0 88 3.8 5.1 75 DEER PARK 9700 8.8 5.7 154 9.7 9.2 105 HOBBS PARK 10100 6.7 6.7 100 6.2 5.6 111 LITTLE WARM 9370 5.3 4.4 120 5.4 5.8 93 SOUTH PASS 9040 7.0 6.9 101 6.5 7.9 82 ST. LAWRENCE ALT 8620 2.0 3.3 61 3.0 4.2 71 TOGWOTEE PASS 9580 12.7 9.5 134 13.8 9.9 139 TOWNSEND CREEK 8700 3.5 3.8 92 5.6 5.4 104 ----- ----- Basin wide percent of average 112 102 BIGHORN BASIN BALD MTN. 9380 8.9 8.0 111 7.9 7.0 113 BEAR TRAP MEADOW 8200 2.3 2.2 105 3.2 4.0 80 BLACKWATER 9780 11.9 10.2 117 11.0 9.4 117 BONE SPRINGS DIV 9350 6.6 6.6 100 6.0 6.2 97 EVENING STAR 9200 13.2 11.5 115 14.5 10.9 133 GRAVE SPRINGS 8550 3.0 3.3 91 3.7 4.3 86 KIRWIN 9550 5.6 5.2 108 6.0 5.1 118 MARQUETTE 8760 1.2 4.4 27 2.9 4.8 60 MIDDLE POWDER 7760 4.6 4.8 96 3.0 6.0 50 OWL CREEK 8975 1.5 2.3 65 1.9 2.6 73 POWDER RIVER PASS 9480 5.2 4.3 121 5.9 5.2 113 SHELL CREEK 9580 6.3 6.3 100 5.6 5.7 98 SYLVAN LAKE 8420 9.6 8.7 110 12.5 9.5 132 SYLVAN ROAD 7120 6.4 5.0 128 9.0 8.8 102 TIMBER CREEK 7950 1.6 2.7 59 2.1 3.4 62 YOUNTS PEAK 8350 7.6 6.4 119 6.8 6.8 100 ----- ----- Basin wide percent of average 104 102 SHOSHONE RIVER BLACKWATER 9780 11.9 10.2 117 11.0 9.4 117 EVENING STAR 9200 13.2 11.5 115 14.5 10.9 133 KIRWIN 9550 5.6 5.2 108 6.0 5.1 118 MARQUETTE 8760 1.2 4.4 27 2.9 4.8 60 SYLVAN LAKE 8420 9.6 8.7 110 12.5 9.5 132 SYLVAN ROAD 7120 6.4 5.0 128 9.0 8.8 102 YOUNTS PEAK 8350 7.6 6.4 119 6.8 6.8 100 ----- ----- Basin wide percent of average 108 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.3 2.2 105 3.2 4.0 80 BIG GOOSE 7990 -M 3.5 * -M 4.0 * BONE SPRINGS DIV 9350 6.6 6.6 100 6.0 6.2 97 BURGESS JUNCTION 7880 3.0 4.6 65 4.3 5.3 81 CLOUD PEAK RESERVOIR 9860 5.6 4.8 117 5.5 5.7 96 DOME LAKE 8880 2.7 5.1 53 5.1 6.0 85 GRAVE SPRINGS 8550 3.0 3.3 91 3.7 4.3 86 HANSEN SAWMILL 8360 1.6 2.7 59 2.5 3.8 66 LITTLE GOOSE 8870 2.9 -M * 6.4 -M * MIDDLE POWDER 7760 4.6 4.8 96 3.0 6.0 50 POWDER RIVER PASS 9480 5.2 4.3 121 5.9 5.2 113 SOLDIER PARK 8720 1.3 -M * 3.1 -M * SUCKER CREEK 8880 4.3 4.2 102 5.1 5.7 89 TIE CREEK 6870 1.8 1.6 113 3.4 4.5 76 ----- ----- Basin wide percent of average 92 84 BELLE FOURCHE BLIND PARK 6890 1.8 2.6 69 7.3 5.4 135 COLE CANYON 5910 2.1 2.8 75 4.6 3.5 131 NORTH RAPID CREEK 6130 2.4 2.6 92 6.1 4.6 133 ----- ----- Basin wide percent of average 79 133 UPPER N. PLATTE RIVER COLUMBINE 9160 11.4 7.6 150 14.5 9.2 158 DIVIDE PEAK 8880 7.3 7.3 100 10.9 8.3 131 ELK RIVER 8700 6.5 5.2 125 9.9 7.2 138 JOE WRIGHT 10120 11.6 8.1 143 16.6 10.0 166 NORTH FRENCH CREEK 10130 16.0 10.9 147 16.1 9.9 163 OLD BATTLE 10000 15.0 12.3 122 16.7 13.0 128 SAGE CREEK BASIN 7850 4.2 4.2 100 7.5 4.8 156 SOUTH BRUSH CREEK 8440 6.7 4.1 163 9.9 6.6 150 TOWER 10500 20.7 17.1 121 22.5 14.6 154 WEBBER SPRINGS 9250 9.7 9.4 103 14.0 10.7 131 WILLOW CREEK PASS 9540 7.3 4.7 155 8.2 5.6 146 ----- ----- Basin wide percent of average 128 147 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 8.6 116 11.8 8.4 140 CASPER MTN. 7900 4.2 6.0 70 7.1 6.4 111 DEADMAN HILL 10220 6.1 6.4 95 10.7 6.7 160 DEER PARK 9700 8.8 5.7 154 9.7 9.2 105 LAPRELE CREEK 8375 3.4 4.4 77 5.0 5.3 94 RENO HILL 8400 5.2 5.6 93 6.9 6.2 111 ROACH 9700 7.5 5.9 127 10.0 7.0 143 SAND LAKE 10050 14.3 12.5 114 13.9 9.6 145 SOUTH PASS 9040 7.0 6.9 101 6.5 7.9 82 WINDY PEAK 7900 2.8 3.1 90 5.3 4.8 110 ----- ----- Basin wide percent of average 106 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.7 2.8 132 5.9 5.9 100 DIVIDE PEAK 8880 7.3 7.3 100 10.9 8.3 131 OLD BATTLE 10000 15.0 12.3 122 16.7 13.0 128 SANDSTONE RS 8150 3.2 3.8 84 9.7 7.3 133 WHISKEY PARK 8950 -M 8.6 * 14.9 10.8 138 ----- ----- Basin wide percent of average 111 128 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.5 5.7 96 6.3 5.6 113 BLIND BULL SUM 8650 11.1 10.5 106 8.1 9.1 89 EAST RIM DIVIDE 7930 4.4 4.7 94 4.9 4.7 104 ELKHART PARK G.S. 9400 4.5 5.1 88 5.2 5.7 91 GROS VENTRE SUMMIT 8750 6.9 5.6 123 6.8 5.5 124 GUNSIGHT PASS 9820 7.2 -M * 7.7 -M * KENDALL R.S. 7740 4.3 5.1 84 6.2 5.5 113 LOOMIS PARK 8240 6.9 6.5 106 7.8 6.8 115 NEW FORK LAKE 8340 4.3 4.3 100 4.5 4.9 92 POCKET CREEK 9360 4.7 -M * 5.9 -M * SNIDER BASIN 8060 7.5 5.5 136 8.4 6.4 131 SPRING CREEK DIVIDE 9000 12.9 10.1 128 13.9 10.4 134 TRIPLE PEAK 8500 11.5 9.5 121 13.5 9.1 148 ----- ----- Basin wide percent of average 110 116 LOWER GREEN RIVER HAMS FORK 7840 5.0 4.1 122 6.4 4.7 136 HEWINTA 9519 2.9 3.1 94 7.1 6.1 116 HICKERSON PARK 9145 1.3 2.2 59 3.3 3.8 87 HOLE-IN-ROCK 9150 2.2 2.1 105 3.9 3.5 111 INDIAN CREEK 9425 12.8 9.9 129 12.4 9.8 127 KELLEY R.S. 8180 8.0 6.2 129 10.5 8.1 130 STEEL CREEK PARK 10200 5.1 5.5 93 8.4 6.5 129 ----- ----- Basin wide percent of average 113 122 UPPER BEAR RIVER BUG LAKE 7950 9.5 6.2 153 12.2 7.7 158 HAYDEN FORK 9212 5.7 4.8 119 12.5 8.3 151 KELLEY R.S. 8180 8.0 6.2 129 10.5 8.1 130 LILY LAKE 9156 6.5 4.3 151 9.5 7.4 128 MONTE CRISTO 8960 12.3 8.2 150 15.3 10.0 153 SALT RIVER SUMMIT 7760 6.0 4.1 146 9.8 7.1 138 TRIAL LAKE 9992 11.9 8.2 145 13.9 9.2 151 ----- ----- Basin wide percent of average 143 145 ----------------------------------------------------------------------------- -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.