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 MONDAY: DECEMBER 13 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 7.7 5.7 135 10.4 7.9 132 COTTONWOOD CREEK 7670 11.2 6.6 170 15.3 10.1 151 GRAND TARGHEE 9260 19.5 -M * 14.6 -M * GRANITE CREEK 6770 7.1 5.0 142 9.6 7.0 137 GRASSY LAKE 7265 11.8 10.4 113 15.2 12.5 122 GROS VENTRE SUMMIT 8750 6.5 5.1 127 6.7 5.1 131 GUNSIGHT PASS 9820 7.0 -M * 7.3 -M * LEWIS LAKE DIVIDE 7850 13.3 10.4 128 15.6 12.9 121 PHILLIPS BENCH 8200 12.2 8.9 137 13.8 9.8 141 SALT RIVER SUMMIT 7760 5.7 3.7 154 9.3 6.5 143 SNAKE RIVER STATION 6920 6.2 5.6 111 11.2 8.3 135 SPRING CREEK DIVIDE 9000 12.1 9.2 132 13.1 9.5 138 THUMB DIVIDE 7980 8.1 5.4 150 9.0 6.8 132 TOGWOTEE PASS 9580 12.1 8.8 138 13.1 9.2 142 TWO OCEAN PLATEAU 9240 15.4 10.4 148 12.2 10.4 117 WILLOW CREEK 8380 11.6 10.3 113 16.7 11.8 142 ----- ----- Basin wide percent of average 134 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 9.9 8.7 114 9.9 7.6 130 BLACK BEAR 8170 15.9 12.8 124 17.4 13.2 132 CANYON 7870 6.1 4.4 139 7.6 6.0 127 FISHER CREEK 9100 13.6 12.3 111 14.3 12.7 113 MADISON PLATEAU 7750 9.9 8.3 119 12.0 9.5 126 NORTHEAST ENTRANCE 7350 4.0 3.5 114 6.3 5.0 126 PARKER PEAK 9400 11.0 8.3 133 11.6 6.7 173 SYLVAN LAKE 8420 8.5 8.1 105 11.2 8.8 127 THUMB DIVIDE 7980 8.1 5.4 150 9.0 6.8 132 TWO OCEAN PLATEAU 9240 15.4 10.4 148 12.2 10.4 117 WHISKEY CREEK 6800 6.4 5.3 121 9.1 7.5 121 WHITE MILL 8700 9.8 8.6 114 11.2 9.9 113 WOLVERINE 7650 5.7 4.1 139 6.2 5.6 111 ----- ----- Basin wide percent of average 124 126 WIND RIVER BURROUGHS CREEK 8750 5.7 5.1 112 6.2 6.1 102 CASTLE CREEK 8400 2.6 -M * 3.4 -M * COLD SPRINGS 9630 3.6 3.8 95 3.7 4.8 77 DEER PARK 9700 8.7 5.2 167 9.7 8.6 113 HOBBS PARK 10100 6.6 6.4 103 6.2 5.3 117 LITTLE WARM 9370 4.8 4.3 112 4.9 5.5 89 SOUTH PASS 9040 7.0 6.6 106 6.6 7.4 89 ST. LAWRENCE ALT 8620 2.4 3.2 75 3.1 4.0 78 TOGWOTEE PASS 9580 12.1 8.8 138 13.1 9.2 142 TOWNSEND CREEK 8700 3.8 3.6 106 5.6 5.2 108 ----- ----- Basin wide percent of average 116 105 BIGHORN BASIN BALD MTN. 9380 8.5 7.3 116 7.4 6.5 114 BEAR TRAP MEADOW 8200 2.1 2.0 105 3.3 3.9 85 BLACKWATER 9780 11.0 9.7 113 10.6 8.8 120 BONE SPRINGS DIV 9350 5.9 6.2 95 5.0 5.8 86 EVENING STAR 9200 12.1 10.8 112 13.7 10.1 136 GRAVE SPRINGS 8550 2.9 3.0 97 3.4 4.1 83 KIRWIN 9550 5.6 5.0 112 6.2 4.8 129 MARQUETTE 8760 1.4 4.2 33 3.1 4.6 67 MIDDLE POWDER 7760 4.4 4.2 105 3.0 5.7 53 OWL CREEK 8975 1.8 2.2 82 2.3 2.5 92 POWDER RIVER PASS 9480 4.8 4.0 120 5.8 4.9 118 SHELL CREEK 9580 5.9 5.8 102 5.0 5.4 93 SYLVAN LAKE 8420 8.5 8.1 105 11.2 8.8 127 SYLVAN ROAD 7120 5.2 4.7 111 8.0 8.2 98 TIMBER CREEK 7950 1.9 2.6 73 2.3 3.3 70 YOUNTS PEAK 8350 7.4 6.0 123 6.8 6.3 108 ----- ----- Basin wide percent of average 104 104 SHOSHONE RIVER BLACKWATER 9780 11.0 9.7 113 10.6 8.8 120 EVENING STAR 9200 12.1 10.8 112 13.7 10.1 136 KIRWIN 9550 5.6 5.0 112 6.2 4.8 129 MARQUETTE 8760 1.4 4.2 33 3.1 4.6 67 SYLVAN LAKE 8420 8.5 8.1 105 11.2 8.8 127 SYLVAN ROAD 7120 5.2 4.7 111 8.0 8.2 98 YOUNTS PEAK 8350 7.4 6.0 123 6.8 6.3 108 ----- ----- Basin wide percent of average 106 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.1 2.0 105 3.3 3.9 85 BIG GOOSE 7990 2.2 3.1 71 3.8 3.7 103 BONE SPRINGS DIV 9350 5.9 6.2 95 5.0 5.8 86 BURGESS JUNCTION 7880 3.0 4.1 73 4.5 5.0 90 CLOUD PEAK RESERVOIR 9860 5.6 4.4 127 6.3 5.5 115 DOME LAKE 8880 2.7 4.8 56 4.7 5.7 82 GRAVE SPRINGS 8550 2.9 3.0 97 3.4 4.1 83 HANSEN SAWMILL 8360 2.0 2.5 80 2.5 3.7 68 LITTLE GOOSE 8870 2.7 -M * 6.4 -M * MIDDLE POWDER 7760 4.4 4.2 105 3.0 5.7 53 POWDER RIVER PASS 9480 4.8 4.0 120 5.8 4.9 118 SOLDIER PARK 8720 1.7 -M * 3.3 -M * SUCKER CREEK 8880 4.3 3.9 110 4.5 5.4 83 TIE CREEK 6870 2.0 1.4 143 3.6 4.3 84 ----- ----- Basin wide percent of average 96 87 BELLE FOURCHE BLIND PARK 6890 2.1 2.3 91 7.3 5.1 143 COLE CANYON 5910 2.6 2.6 100 4.5 3.3 136 NORTH RAPID CREEK 6130 2.5 2.3 109 6.4 4.4 145 ----- ----- Basin wide percent of average 100 142 UPPER N. PLATTE RIVER COLUMBINE 9160 11.1 6.8 163 14.2 8.4 169 DIVIDE PEAK 8880 7.1 6.6 108 10.7 7.7 139 ELK RIVER 8700 6.1 4.5 136 9.6 6.6 145 JOE WRIGHT 10120 11.0 7.5 147 15.8 9.4 168 NORTH FRENCH CREEK 10130 15.5 10.0 155 15.9 9.2 173 OLD BATTLE 10000 14.2 11.4 125 16.2 11.9 136 SAGE CREEK BASIN 7850 4.2 3.8 111 7.3 4.5 162 SOUTH BRUSH CREEK 8440 6.6 3.8 174 9.8 6.2 158 TOWER 10500 19.5 15.8 123 21.6 13.5 160 WEBBER SPRINGS 9250 9.2 8.6 107 13.5 9.8 138 WILLOW CREEK PASS 9540 6.8 4.4 155 7.8 5.2 150 ----- ----- Basin wide percent of average 134 154 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 7.8 128 11.5 7.7 149 CASPER MTN. 7900 3.5 5.6 63 6.2 6.1 102 DEADMAN HILL 10220 6.5 6.0 108 10.6 6.3 168 DEER PARK 9700 8.7 5.2 167 9.7 8.6 113 LAPRELE CREEK 8375 3.4 4.0 85 4.8 5.0 96 RENO HILL 8400 4.7 5.2 90 6.6 5.9 112 ROACH 9700 7.1 5.4 131 9.7 6.5 149 SAND LAKE 10050 14.0 11.5 122 13.7 8.9 154 SOUTH PASS 9040 7.0 6.6 106 6.6 7.4 89 WINDY PEAK 7900 2.7 2.9 93 5.1 4.5 113 ----- ----- Basin wide percent of average 112 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.3 2.5 132 5.8 5.4 107 DIVIDE PEAK 8880 7.1 6.6 108 10.7 7.7 139 OLD BATTLE 10000 14.2 11.4 125 16.2 11.9 136 SANDSTONE RS 8150 3.1 3.4 91 9.3 6.8 137 WHISKEY PARK 8950 4.7 7.9 59 14.2 10.0 142 ----- ----- Basin wide percent of average 102 134 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.6 5.2 108 6.3 5.2 121 BLIND BULL SUM 8650 10.5 9.5 111 7.6 8.4 90 EAST RIM DIVIDE 7930 4.3 4.3 100 4.7 4.3 109 ELKHART PARK G.S. 9400 4.4 4.6 96 4.9 5.3 92 GROS VENTRE SUMMIT 8750 6.5 5.1 127 6.7 5.1 131 GUNSIGHT PASS 9820 7.0 -M * 7.3 -M * KENDALL R.S. 7740 4.1 4.5 91 6.0 5.1 118 LOOMIS PARK 8240 6.6 5.9 112 7.5 6.2 121 NEW FORK LAKE 8340 4.2 3.8 111 4.4 4.6 96 POCKET CREEK 9360 4.6 -M * 5.8 -M * SNIDER BASIN 8060 7.3 4.9 149 8.2 5.8 141 SPRING CREEK DIVIDE 9000 12.1 9.2 132 13.1 9.5 138 TRIPLE PEAK 8500 10.7 8.6 124 12.9 8.3 155 ----- ----- Basin wide percent of average 116 121 LOWER GREEN RIVER HAMS FORK 7840 4.7 3.6 131 6.0 4.4 136 HEWINTA 9519 2.9 2.8 104 6.8 5.8 117 HICKERSON PARK 9145 1.4 2.0 70 3.4 3.6 94 HOLE-IN-ROCK 9150 1.6 1.9 84 3.9 3.3 118 INDIAN CREEK 9425 12.2 9.0 136 11.8 9.0 131 KELLEY R.S. 8180 7.6 5.6 136 10.2 7.4 138 STEEL CREEK PARK 10200 4.9 5.0 98 8.1 6.1 133 ----- ----- Basin wide percent of average 118 127 UPPER BEAR RIVER BUG LAKE 7950 8.7 5.6 155 11.6 7.1 163 HAYDEN FORK 9212 5.6 4.2 133 12.0 7.7 156 KELLEY R.S. 8180 7.6 5.6 136 10.2 7.4 138 LILY LAKE 9156 6.1 3.9 156 9.2 6.9 133 MONTE CRISTO 8960 11.5 7.2 160 14.0 9.2 152 SALT RIVER SUMMIT 7760 5.7 3.7 154 9.3 6.5 143 TRIAL LAKE 9992 11.3 7.4 153 13.4 8.4 160 ----- ----- Basin wide percent of average 150 150 ----------------------------------------------------------------------------- -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.