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 FRIDAY: DECEMBER 17 , 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 6.2 129 11.0 8.4 131 COTTONWOOD CREEK 7670 11.8 7.3 162 16.1 10.8 149 GRAND TARGHEE 9260 20.6 -M * 15.5 -M * GRANITE CREEK 6770 7.4 5.5 135 9.9 7.6 130 GRASSY LAKE 7265 12.9 11.2 115 15.9 13.5 118 GROS VENTRE SUMMIT 8750 6.8 5.5 124 6.6 5.4 122 GUNSIGHT PASS 9820 7.2 -M * 7.6 -M * LEWIS LAKE DIVIDE 7850 14.4 11.3 127 16.2 13.9 117 PHILLIPS BENCH 8200 12.9 9.7 133 14.2 10.6 134 SALT RIVER SUMMIT 7760 5.9 4.0 148 9.5 7.0 136 SNAKE RIVER STATION 6920 6.3 6.1 103 11.8 8.9 133 SPRING CREEK DIVIDE 9000 12.8 10.0 128 13.6 10.2 133 THUMB DIVIDE 7980 8.6 5.9 146 9.5 7.3 130 TOGWOTEE PASS 9580 12.7 9.4 135 13.7 9.8 140 TWO OCEAN PLATEAU 9240 16.6 11.0 151 13.5 11.1 122 WILLOW CREEK 8380 12.9 11.1 116 17.8 12.6 141 ----- ----- Basin wide percent of average 131 131 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.7 9.4 114 10.6 8.2 129 BLACK BEAR 8170 17.1 13.7 125 18.3 14.1 130 CANYON 7870 6.7 4.7 143 7.9 6.3 125 FISHER CREEK 9100 15.0 13.1 115 15.4 13.6 113 MADISON PLATEAU 7750 10.9 8.9 122 12.9 10.1 128 NORTHEAST ENTRANCE 7350 4.4 3.8 116 6.7 5.3 126 PARKER PEAK 9400 11.8 8.7 136 12.3 7.0 176 SYLVAN LAKE 8420 9.6 8.6 112 12.4 9.3 133 THUMB DIVIDE 7980 8.6 5.9 146 9.5 7.3 130 TWO OCEAN PLATEAU 9240 16.6 11.0 151 13.5 11.1 122 WHISKEY CREEK 6800 6.8 5.8 117 9.6 8.0 120 WHITE MILL 8700 10.8 9.2 117 11.5 10.5 110 WOLVERINE 7650 6.2 4.4 141 6.1 5.9 103 ----- ----- Basin wide percent of average 126 126 WIND RIVER BURROUGHS CREEK 8750 6.3 5.4 117 6.8 6.5 105 CASTLE CREEK 8400 2.6 -M * 3.4 -M * COLD SPRINGS 9630 3.7 3.9 95 3.8 5.0 76 DEER PARK 9700 8.8 5.7 154 9.7 9.1 107 HOBBS PARK 10100 6.8 6.7 101 6.2 5.6 111 LITTLE WARM 9370 5.2 4.4 118 5.3 5.7 93 SOUTH PASS 9040 7.2 6.8 106 6.7 7.8 86 ST. LAWRENCE ALT 8620 2.3 3.3 70 3.1 4.1 76 TOGWOTEE PASS 9580 12.7 9.4 135 13.7 9.8 140 TOWNSEND CREEK 8700 3.4 3.8 89 5.5 5.3 104 ----- ----- Basin wide percent of average 114 103 BIGHORN BASIN BALD MTN. 9380 8.9 7.9 113 7.8 6.9 113 BEAR TRAP MEADOW 8200 2.4 2.2 109 3.3 4.0 83 BLACKWATER 9780 11.9 10.1 118 11.2 9.3 120 BONE SPRINGS DIV 9350 6.6 6.5 102 6.0 6.1 98 EVENING STAR 9200 13.1 11.4 115 14.5 10.7 136 GRAVE SPRINGS 8550 3.2 3.2 100 3.7 4.2 88 KIRWIN 9550 5.9 5.1 116 6.4 5.1 125 MARQUETTE 8760 1.5 4.3 35 3.3 4.8 69 MIDDLE POWDER 7760 4.7 4.7 100 3.0 5.9 51 OWL CREEK 8975 1.8 2.3 78 2.3 2.6 88 POWDER RIVER PASS 9480 5.2 4.3 121 6.0 5.1 118 SHELL CREEK 9580 6.3 6.2 102 5.5 5.7 96 SYLVAN LAKE 8420 9.6 8.6 112 12.4 9.3 133 SYLVAN ROAD 7120 6.4 5.0 128 8.9 8.7 102 TIMBER CREEK 7950 1.8 2.7 67 2.3 3.4 68 YOUNTS PEAK 8350 7.7 6.3 122 7.0 6.7 104 ----- ----- Basin wide percent of average 107 105 SHOSHONE RIVER BLACKWATER 9780 11.9 10.1 118 11.2 9.3 120 EVENING STAR 9200 13.1 11.4 115 14.5 10.7 136 KIRWIN 9550 5.9 5.1 116 6.4 5.1 125 MARQUETTE 8760 1.5 4.3 35 3.3 4.8 69 SYLVAN LAKE 8420 9.6 8.6 112 12.4 9.3 133 SYLVAN ROAD 7120 6.4 5.0 128 8.9 8.7 102 YOUNTS PEAK 8350 7.7 6.3 122 7.0 6.7 104 ----- ----- Basin wide percent of average 110 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.4 2.2 109 3.3 4.0 83 BIG GOOSE 7990 2.5 3.4 74 3.7 3.9 95 BONE SPRINGS DIV 9350 6.6 6.5 102 6.0 6.1 98 BURGESS JUNCTION 7880 3.1 4.5 69 4.5 5.2 87 CLOUD PEAK RESERVOIR 9860 5.8 4.7 123 6.5 5.7 114 DOME LAKE 8880 3.0 5.1 59 5.0 6.0 83 GRAVE SPRINGS 8550 3.2 3.2 100 3.7 4.2 88 HANSEN SAWMILL 8360 2.0 2.6 77 2.7 3.8 71 LITTLE GOOSE 8870 3.0 -M * 6.7 -M * MIDDLE POWDER 7760 4.7 4.7 100 3.0 5.9 51 POWDER RIVER PASS 9480 5.2 4.3 121 6.0 5.1 118 SOLDIER PARK 8720 1.6 -M * 3.2 -M * SUCKER CREEK 8880 4.4 4.2 105 5.0 5.7 88 TIE CREEK 6870 2.0 1.6 125 3.6 4.5 80 ----- ----- Basin wide percent of average 96 88 BELLE FOURCHE BLIND PARK 6890 2.0 2.5 80 7.3 5.4 135 COLE CANYON 5910 2.4 2.7 89 4.5 3.5 129 NORTH RAPID CREEK 6130 2.6 2.5 104 6.4 4.6 139 ----- ----- Basin wide percent of average 91 135 UPPER N. PLATTE RIVER COLUMBINE 9160 11.2 7.4 151 14.3 9.0 159 DIVIDE PEAK 8880 7.2 7.2 100 10.8 8.2 132 ELK RIVER 8700 6.4 5.1 125 9.8 7.1 138 JOE WRIGHT 10120 11.2 8.0 140 16.2 9.9 164 NORTH FRENCH CREEK 10130 16.0 10.7 150 16.0 9.8 163 OLD BATTLE 10000 14.9 12.1 123 16.5 12.8 129 SAGE CREEK BASIN 7850 4.1 4.2 98 7.5 4.8 156 SOUTH BRUSH CREEK 8440 6.8 4.1 166 9.7 6.5 149 TOWER 10500 20.4 16.8 121 22.3 14.4 155 WEBBER SPRINGS 9250 9.7 9.2 105 13.9 10.5 132 WILLOW CREEK PASS 9540 7.2 4.7 153 8.2 5.5 149 ----- ----- Basin wide percent of average 129 147 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.8 8.4 117 11.6 8.3 140 CASPER MTN. 7900 4.2 5.9 71 7.1 6.3 113 DEADMAN HILL 10220 6.4 6.3 102 10.7 6.6 162 DEER PARK 9700 8.8 5.7 154 9.7 9.1 107 LAPRELE CREEK 8375 3.4 4.3 79 5.0 5.2 96 RENO HILL 8400 5.2 5.5 95 6.8 6.1 111 ROACH 9700 7.4 5.8 128 9.7 6.9 141 SAND LAKE 10050 14.1 12.3 115 13.6 9.5 143 SOUTH PASS 9040 7.2 6.8 106 6.7 7.8 86 WINDY PEAK 7900 2.7 3.0 90 5.3 4.7 113 ----- ----- Basin wide percent of average 108 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.8 2.8 136 5.8 5.8 100 DIVIDE PEAK 8880 7.2 7.2 100 10.8 8.2 132 OLD BATTLE 10000 14.9 12.1 123 16.5 12.8 129 SANDSTONE RS 8150 3.1 3.7 84 9.6 7.2 133 WHISKEY PARK 8950 -M 8.5 * 14.8 10.6 140 ----- ----- Basin wide percent of average 112 129 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.1 5.6 91 6.0 5.5 109 BLIND BULL SUM 8650 11.0 10.3 107 7.9 9.0 88 EAST RIM DIVIDE 7930 4.4 4.7 94 4.8 4.6 104 ELKHART PARK G.S. 9400 4.3 5.0 86 5.1 5.6 91 GROS VENTRE SUMMIT 8750 6.8 5.5 124 6.6 5.4 122 GUNSIGHT PASS 9820 7.2 -M * 7.6 -M * KENDALL R.S. 7740 4.1 5.0 82 6.2 5.5 113 LOOMIS PARK 8240 6.9 6.4 108 7.7 6.7 115 NEW FORK LAKE 8340 4.2 4.2 100 4.2 4.9 86 POCKET CREEK 9360 4.4 -M * 5.8 -M * SNIDER BASIN 8060 7.4 5.4 137 8.2 6.2 132 SPRING CREEK DIVIDE 9000 12.8 10.0 128 13.6 10.2 133 TRIPLE PEAK 8500 11.3 9.3 122 13.1 8.9 147 ----- ----- Basin wide percent of average 110 115 LOWER GREEN RIVER HAMS FORK 7840 4.8 4.0 120 6.3 4.7 134 HEWINTA 9519 2.6 3.1 84 6.7 6.1 110 HICKERSON PARK 9145 .8 2.2 36 2.8 3.8 74 HOLE-IN-ROCK 9150 1.5 2.1 71 3.8 3.5 109 INDIAN CREEK 9425 12.7 9.7 131 12.2 9.7 126 KELLEY R.S. 8180 7.9 6.1 130 10.1 7.9 128 STEEL CREEK PARK 10200 4.9 5.4 91 8.3 6.4 130 ----- ----- Basin wide percent of average 108 119 UPPER BEAR RIVER BUG LAKE 7950 9.4 6.1 154 12.2 7.6 161 HAYDEN FORK 9212 5.7 4.7 121 12.4 8.1 153 KELLEY R.S. 8180 7.9 6.1 130 10.1 7.9 128 LILY LAKE 9156 6.1 4.2 145 9.5 7.3 130 MONTE CRISTO 8960 12.3 8.0 154 15.0 9.9 152 SALT RIVER SUMMIT 7760 5.9 4.0 148 9.5 7.0 136 TRIAL LAKE 9992 11.8 8.1 146 13.7 9.0 152 ----- ----- 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.