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 19 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.3 6.5 128 11.2 8.7 129 COTTONWOOD CREEK 7670 12.4 7.6 163 16.8 11.1 151 GRAND TARGHEE 9260 21.0 -M * 15.9 -M * GRANITE CREEK 6770 8.0 5.8 138 10.5 7.8 135 GRASSY LAKE 7265 13.2 11.7 113 16.5 14.0 118 GROS VENTRE SUMMIT 8750 7.1 5.7 125 7.1 5.5 129 GUNSIGHT PASS 9820 7.6 -M * 8.0 -M * LEWIS LAKE DIVIDE 7850 14.9 11.7 127 16.9 14.4 117 PHILLIPS BENCH 8200 13.2 10.1 131 14.7 10.9 135 SALT RIVER SUMMIT 7760 6.4 4.2 152 10.2 7.3 140 SNAKE RIVER STATION 6920 6.7 6.3 106 12.2 9.2 133 SPRING CREEK DIVIDE 9000 13.8 10.3 134 14.7 10.6 139 THUMB DIVIDE 7980 9.0 6.1 148 9.8 7.5 131 TOGWOTEE PASS 9580 12.9 9.7 133 14.0 10.1 139 TWO OCEAN PLATEAU 9240 16.9 11.3 150 13.8 11.4 121 WILLOW CREEK 8380 13.2 11.6 114 18.4 13.0 142 ----- ----- Basin wide percent of average 132 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.9 9.6 114 10.8 8.4 129 BLACK BEAR 8170 17.4 14.1 123 18.8 14.6 129 CANYON 7870 6.7 4.9 137 8.3 6.5 128 FISHER CREEK 9100 15.3 13.4 114 15.7 14.1 111 MADISON PLATEAU 7750 11.2 9.1 123 13.2 10.4 127 NORTHEAST ENTRANCE 7350 4.6 3.9 118 6.9 5.5 125 PARKER PEAK 9400 12.1 8.9 136 -M 7.2 * SYLVAN LAKE 8420 9.8 8.8 111 12.7 9.6 132 THUMB DIVIDE 7980 9.0 6.1 148 9.8 7.5 131 TWO OCEAN PLATEAU 9240 16.9 11.3 150 13.8 11.4 121 WHISKEY CREEK 6800 7.1 6.0 118 9.8 8.3 118 WHITE MILL 8700 11.0 9.4 117 12.1 10.8 112 WOLVERINE 7650 6.4 4.5 142 6.6 6.1 108 ----- ----- Basin wide percent of average 126 122 WIND RIVER BURROUGHS CREEK 8750 6.8 5.5 124 7.2 6.7 107 CASTLE CREEK 8400 2.7 -M * 3.5 -M * COLD SPRINGS 9630 3.8 4.0 95 4.0 5.1 78 DEER PARK 9700 9.0 5.8 155 9.9 9.3 106 HOBBS PARK 10100 6.9 6.8 101 6.4 5.7 112 LITTLE WARM 9370 5.5 4.5 122 5.6 5.8 97 SOUTH PASS 9040 7.3 7.0 104 6.7 8.0 84 ST. LAWRENCE ALT 8620 2.3 3.4 68 3.1 4.2 74 TOGWOTEE PASS 9580 12.9 9.7 133 14.0 10.1 139 TOWNSEND CREEK 8700 3.8 3.8 100 5.7 5.4 106 ----- ----- Basin wide percent of average 115 104 BIGHORN BASIN BALD MTN. 9380 9.0 8.1 111 8.1 7.1 114 BEAR TRAP MEADOW 8200 2.5 2.2 114 3.6 4.1 88 BLACKWATER 9780 12.4 10.4 119 11.7 9.5 123 BONE SPRINGS DIV 9350 6.6 6.7 99 6.1 6.3 97 EVENING STAR 9200 13.6 11.6 117 14.9 11.0 135 GRAVE SPRINGS 8550 3.2 3.3 97 3.7 4.3 86 KIRWIN 9550 5.9 5.2 113 6.4 5.2 123 MARQUETTE 8760 1.4 4.4 32 3.2 4.8 67 MIDDLE POWDER 7760 4.8 4.8 100 3.2 6.0 53 OWL CREEK 8975 1.7 2.4 71 2.2 2.6 85 POWDER RIVER PASS 9480 5.2 4.4 118 6.2 5.2 119 SHELL CREEK 9580 6.3 6.4 98 5.5 5.8 95 SYLVAN LAKE 8420 9.8 8.8 111 12.7 9.6 132 SYLVAN ROAD 7120 6.5 5.1 127 9.2 8.9 103 TIMBER CREEK 7950 1.7 2.8 61 2.2 3.4 65 YOUNTS PEAK 8350 7.8 6.5 120 7.1 6.9 103 ----- ----- Basin wide percent of average 106 105 SHOSHONE RIVER BLACKWATER 9780 12.4 10.4 119 11.7 9.5 123 EVENING STAR 9200 13.6 11.6 117 14.9 11.0 135 KIRWIN 9550 5.9 5.2 113 6.4 5.2 123 MARQUETTE 8760 1.4 4.4 32 3.2 4.8 67 SYLVAN LAKE 8420 9.8 8.8 111 12.7 9.6 132 SYLVAN ROAD 7120 6.5 5.1 127 9.2 8.9 103 YOUNTS PEAK 8350 7.8 6.5 120 7.1 6.9 103 ----- ----- Basin wide percent of average 110 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.5 2.2 114 3.6 4.1 88 BIG GOOSE 7990 2.4 3.6 67 -M 4.0 * BONE SPRINGS DIV 9350 6.6 6.7 99 6.1 6.3 97 BURGESS JUNCTION 7880 3.1 4.7 66 4.6 5.3 87 CLOUD PEAK RESERVOIR 9860 5.9 4.9 120 -M 5.8 * DOME LAKE 8880 3.0 5.2 58 5.3 6.1 87 GRAVE SPRINGS 8550 3.2 3.3 97 3.7 4.3 86 HANSEN SAWMILL 8360 2.1 2.7 78 2.7 3.9 69 LITTLE GOOSE 8870 3.1 -M * 6.7 -M * MIDDLE POWDER 7760 4.8 4.8 100 3.2 6.0 53 POWDER RIVER PASS 9480 5.2 4.4 118 6.2 5.2 119 SOLDIER PARK 8720 1.7 -M * 3.4 -M * SUCKER CREEK 8880 4.5 4.3 105 5.3 5.8 91 TIE CREEK 6870 1.9 1.8 106 3.6 4.5 80 ----- ----- Basin wide percent of average 93 86 BELLE FOURCHE BLIND PARK 6890 2.0 2.6 77 7.4 5.5 135 COLE CANYON 5910 2.2 2.8 79 4.6 3.5 131 NORTH RAPID CREEK 6130 2.4 2.6 92 6.3 4.7 134 ----- ----- Basin wide percent of average 83 134 UPPER N. PLATTE RIVER COLUMBINE 9160 12.2 7.7 158 15.6 9.3 168 DIVIDE PEAK 8880 7.5 7.4 101 11.2 8.4 133 ELK RIVER 8700 6.9 5.3 130 10.3 7.3 141 JOE WRIGHT 10120 12.2 8.2 149 17.1 10.1 169 NORTH FRENCH CREEK 10130 16.9 11.0 154 17.0 10.1 168 OLD BATTLE 10000 15.8 12.5 126 17.6 13.2 133 SAGE CREEK BASIN 7850 4.6 4.3 107 7.7 4.9 157 SOUTH BRUSH CREEK 8440 7.1 4.2 169 10.5 6.7 157 TOWER 10500 21.9 17.3 127 23.8 14.9 160 WEBBER SPRINGS 9250 10.2 9.5 107 14.6 10.9 134 WILLOW CREEK PASS 9540 7.7 4.8 160 8.4 5.6 150 ----- ----- Basin wide percent of average 133 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.9 8.7 125 12.3 8.5 145 CASPER MTN. 7900 4.2 6.0 70 7.0 6.5 108 DEADMAN HILL 10220 6.4 6.5 98 11.2 6.8 165 DEER PARK 9700 9.0 5.8 155 9.9 9.3 106 LAPRELE CREEK 8375 3.7 4.5 82 5.2 5.3 98 RENO HILL 8400 5.3 5.7 93 7.1 6.3 113 ROACH 9700 7.7 6.0 128 10.5 7.1 148 SAND LAKE 10050 14.8 12.6 117 14.5 9.8 148 SOUTH PASS 9040 7.3 7.0 104 6.7 8.0 84 WINDY PEAK 7900 2.9 3.1 94 5.3 4.8 110 ----- ----- Basin wide percent of average 110 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.7 2.9 128 6.1 5.9 103 DIVIDE PEAK 8880 7.5 7.4 101 11.2 8.4 133 OLD BATTLE 10000 15.8 12.5 126 17.6 13.2 133 SANDSTONE RS 8150 3.5 3.9 90 9.9 7.4 134 WHISKEY PARK 8950 -M 8.8 * 15.5 11.0 141 ----- ----- Basin wide percent of average 114 131 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.9 5.8 102 6.7 5.6 120 BLIND BULL SUM 8650 11.7 10.7 109 8.6 9.2 93 EAST RIM DIVIDE 7930 4.9 4.8 102 5.3 4.8 110 ELKHART PARK G.S. 9400 4.9 5.2 94 5.5 5.7 96 GROS VENTRE SUMMIT 8750 7.1 5.7 125 7.1 5.5 129 GUNSIGHT PASS 9820 7.6 -M * 8.0 -M * KENDALL R.S. 7740 4.7 5.2 90 6.5 5.6 116 LOOMIS PARK 8240 7.3 6.6 111 8.3 6.9 120 NEW FORK LAKE 8340 4.6 4.3 107 4.7 5.0 94 POCKET CREEK 9360 4.9 -M * 6.1 -M * SNIDER BASIN 8060 8.0 5.6 143 9.0 6.5 138 SPRING CREEK DIVIDE 9000 13.8 10.3 134 14.7 10.6 139 TRIPLE PEAK 8500 12.0 9.6 125 14.1 9.2 153 ----- ----- Basin wide percent of average 115 121 LOWER GREEN RIVER HAMS FORK 7840 5.4 4.2 129 6.7 4.8 140 HEWINTA 9519 3.1 3.2 97 7.2 6.2 116 HICKERSON PARK 9145 1.6 2.3 70 3.6 3.8 95 HOLE-IN-ROCK 9150 2.3 2.1 110 4.0 3.5 114 INDIAN CREEK 9425 13.3 10.1 132 12.9 10.0 129 KELLEY R.S. 8180 8.5 6.3 135 11.2 8.2 137 STEEL CREEK PARK 10200 5.3 5.6 95 8.4 6.6 127 ----- ----- Basin wide percent of average 117 125 UPPER BEAR RIVER BUG LAKE 7950 11.3 6.4 177 14.0 7.8 179 HAYDEN FORK 9212 6.2 4.9 127 13.0 8.4 155 KELLEY R.S. 8180 8.5 6.3 135 11.2 8.2 137 LILY LAKE 9156 6.7 4.4 152 9.7 7.5 129 MONTE CRISTO 8960 13.2 8.4 157 15.8 10.2 155 SALT RIVER SUMMIT 7760 6.4 4.2 152 10.2 7.3 140 TRIAL LAKE 9992 13.1 8.4 156 15.1 9.3 162 ----- ----- Basin wide percent of average 152 152 ----------------------------------------------------------------------------- -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.