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 25 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.5 7.3 130 12.4 9.4 132 COTTONWOOD CREEK 7670 13.8 8.6 160 18.3 12.2 150 GRAND TARGHEE 9260 23.2 -M * 17.3 -M * GRANITE CREEK 6770 10.1 6.6 153 12.6 8.6 147 GRASSY LAKE 7265 14.9 13.1 114 18.2 15.5 117 GROS VENTRE SUMMIT 8750 8.2 6.2 132 8.1 5.9 137 GUNSIGHT PASS 9820 8.8 -M * 9.1 -M * LEWIS LAKE DIVIDE 7850 16.6 13.1 127 18.5 15.8 117 PHILLIPS BENCH 8200 15.4 11.3 136 16.8 12.1 139 SALT RIVER SUMMIT 7760 7.7 4.7 164 11.5 8.0 144 SNAKE RIVER STATION 6920 7.4 7.0 106 13.3 10.0 133 SPRING CREEK DIVIDE 9000 15.6 11.4 137 16.4 11.7 140 THUMB DIVIDE 7980 10.5 6.8 154 11.2 8.2 137 TOGWOTEE PASS 9580 14.4 10.6 136 15.5 10.9 142 TWO OCEAN PLATEAU 9240 18.1 12.3 147 14.8 12.3 120 WILLOW CREEK 8380 15.3 12.8 120 20.4 14.1 145 ----- ----- Basin wide percent of average 135 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.8 10.3 115 11.6 9.1 127 BLACK BEAR 8170 19.2 15.5 124 20.4 15.9 128 CANYON 7870 7.5 5.3 142 8.9 7.1 125 FISHER CREEK 9100 16.9 14.8 114 17.3 15.4 112 MADISON PLATEAU 7750 12.4 10.1 123 14.4 11.3 127 NORTHEAST ENTRANCE 7350 5.3 4.5 118 7.5 5.9 127 PARKER PEAK 9400 13.1 9.5 138 13.4 7.6 176 SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135 THUMB DIVIDE 7980 10.5 6.8 154 11.2 8.2 137 TWO OCEAN PLATEAU 9240 18.1 12.3 147 14.8 12.3 120 WHISKEY CREEK 6800 8.3 6.7 124 10.9 9.0 121 WHITE MILL 8700 12.2 10.2 120 13.3 11.7 114 WOLVERINE 7650 7.0 5.1 137 7.1 6.5 109 ----- ----- Basin wide percent of average 127 126 WIND RIVER BURROUGHS CREEK 8750 7.5 6.1 123 7.9 7.3 108 CASTLE CREEK 8400 3.2 -M * 3.9 -M * COLD SPRINGS 9630 4.4 4.4 100 4.4 5.4 81 DEER PARK 9700 11.3 6.1 185 12.3 10.1 122 HOBBS PARK 10100 7.8 7.2 108 7.0 6.0 117 LITTLE WARM 9370 6.2 4.9 127 6.4 6.2 103 SOUTH PASS 9040 9.0 7.5 120 8.2 8.6 95 ST. LAWRENCE ALT 8620 2.7 3.6 75 3.6 4.4 82 TOGWOTEE PASS 9580 14.4 10.6 136 15.5 10.9 142 TOWNSEND CREEK 8700 4.1 4.1 100 6.1 5.7 107 ----- ----- Basin wide percent of average 124 111 BIGHORN BASIN BALD MTN. 9380 9.8 8.9 110 8.8 7.7 114 BEAR TRAP MEADOW 8200 2.9 2.4 121 3.8 4.3 88 BLACKWATER 9780 13.5 11.0 123 12.7 10.1 126 BONE SPRINGS DIV 9350 7.2 7.3 99 6.8 6.7 101 EVENING STAR 9200 14.8 12.4 119 16.2 11.9 136 GRAVE SPRINGS 8550 3.4 3.7 92 3.9 4.5 87 KIRWIN 9550 6.5 5.5 118 7.0 5.5 127 MARQUETTE 8760 1.5 4.7 32 3.2 5.1 63 MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.4 50 OWL CREEK 8975 2.1 2.5 84 2.5 2.8 89 POWDER RIVER PASS 9480 6.0 4.8 125 6.8 5.6 121 SHELL CREEK 9580 6.8 6.9 99 5.9 6.2 95 SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135 SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.5 109 TIMBER CREEK 7950 1.8 2.9 62 2.3 3.6 64 YOUNTS PEAK 8350 8.7 7.1 123 8.0 7.5 107 ----- ----- Basin wide percent of average 108 107 SHOSHONE RIVER BLACKWATER 9780 13.5 11.0 123 12.7 10.1 126 EVENING STAR 9200 14.8 12.4 119 16.2 11.9 136 KIRWIN 9550 6.5 5.5 118 7.0 5.5 127 MARQUETTE 8760 1.5 4.7 32 3.2 5.1 63 SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135 SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.5 109 YOUNTS PEAK 8350 8.7 7.1 123 8.0 7.5 107 ----- ----- Basin wide percent of average 114 119 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.9 2.4 121 3.8 4.3 88 BIG GOOSE 7990 2.4 4.0 60 4.0 4.3 93 BONE SPRINGS DIV 9350 7.2 7.3 99 6.8 6.7 101 BURGESS JUNCTION 7880 3.3 5.2 63 4.6 5.7 81 CLOUD PEAK RESERVOIR 9860 6.2 5.3 117 6.2 6.1 102 DOME LAKE 8880 3.2 5.7 56 5.3 6.5 82 GRAVE SPRINGS 8550 3.4 3.7 92 3.9 4.5 87 HANSEN SAWMILL 8360 2.3 2.9 79 2.9 4.1 71 LITTLE GOOSE 8870 3.1 -M * 6.8 -M * MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.4 50 POWDER RIVER PASS 9480 6.0 4.8 125 6.8 5.6 121 SOLDIER PARK 8720 1.9 -M * 3.6 -M * SUCKER CREEK 8880 4.7 4.9 96 5.5 6.2 89 TIE CREEK 6870 2.0 2.2 91 3.6 4.8 75 ----- ----- Basin wide percent of average 90 87 BELLE FOURCHE BLIND PARK 6890 2.4 3.2 75 7.8 5.8 134 COLE CANYON 5910 2.5 3.0 83 5.0 3.7 135 NORTH RAPID CREEK 6130 2.6 2.9 90 6.5 5.0 130 ----- ----- Basin wide percent of average 82 133 UPPER N. PLATTE RIVER COLUMBINE 9160 14.3 8.7 164 17.5 10.3 170 DIVIDE PEAK 8880 10.9 8.2 133 14.4 9.2 157 ELK RIVER 8700 10.3 6.2 166 13.2 8.0 165 JOE WRIGHT 10120 14.2 8.8 161 19.0 10.9 174 NORTH FRENCH CREEK 10130 20.2 12.1 167 20.1 10.9 184 OLD BATTLE 10000 21.3 13.5 158 22.9 14.5 158 SAGE CREEK BASIN 7850 6.9 4.8 144 9.9 5.3 187 SOUTH BRUSH CREEK 8440 9.1 4.6 198 12.3 7.2 171 TOWER 10500 26.1 18.8 139 27.2 16.2 168 WEBBER SPRINGS 9250 14.6 10.4 140 18.9 11.9 159 WILLOW CREEK PASS 9540 9.9 5.1 194 10.4 6.0 173 ----- ----- Basin wide percent of average 156 168 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.1 9.7 145 15.7 9.3 169 CASPER MTN. 7900 5.0 6.5 77 7.9 6.8 116 DEADMAN HILL 10220 6.3 7.0 90 13.2 7.3 181 DEER PARK 9700 11.3 6.1 185 12.3 10.1 122 LAPRELE CREEK 8375 5.0 4.9 102 6.4 5.7 112 RENO HILL 8400 6.3 6.1 103 8.2 6.7 122 ROACH 9700 10.9 6.6 165 13.5 7.7 175 SAND LAKE 10050 18.0 13.7 131 17.5 10.6 165 SOUTH PASS 9040 9.0 7.5 120 8.2 8.6 95 WINDY PEAK 7900 4.0 3.3 121 6.4 5.1 125 ----- ----- Basin wide percent of average 126 140 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.8 3.4 171 8.1 6.5 125 DIVIDE PEAK 8880 10.9 8.2 133 14.4 9.2 157 OLD BATTLE 10000 21.3 13.5 158 22.9 14.5 158 SANDSTONE RS 8150 6.2 4.5 138 12.9 8.0 161 WHISKEY PARK 8950 -M 9.8 * 19.7 11.9 166 ----- ----- Basin wide percent of average 149 156 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.3 6.3 116 8.0 6.1 131 BLIND BULL SUM 8650 13.5 11.9 113 10.3 10.1 102 EAST RIM DIVIDE 7930 6.1 5.3 115 6.5 5.2 125 ELKHART PARK G.S. 9400 6.1 5.7 107 6.7 6.2 108 GROS VENTRE SUMMIT 8750 8.2 6.2 132 8.1 5.9 137 GUNSIGHT PASS 9820 8.8 -M * 9.1 -M * KENDALL R.S. 7740 6.2 5.9 105 8.0 6.2 129 LOOMIS PARK 8240 9.1 7.3 125 10.0 7.5 133 NEW FORK LAKE 8340 5.7 4.8 119 5.7 5.4 106 POCKET CREEK 9360 6.2 -M * 7.4 -M * SNIDER BASIN 8060 9.5 6.2 153 10.1 7.1 142 SPRING CREEK DIVIDE 9000 15.6 11.4 137 16.4 11.7 140 TRIPLE PEAK 8500 13.9 10.7 130 15.8 10.1 156 ----- ----- Basin wide percent of average 124 130 LOWER GREEN RIVER HAMS FORK 7840 6.9 4.8 144 7.8 5.2 150 HEWINTA 9519 5.4 3.6 150 9.4 6.6 142 HICKERSON PARK 9145 2.6 2.5 104 4.6 4.0 115 HOLE-IN-ROCK 9150 2.7 2.4 113 5.2 3.7 141 INDIAN CREEK 9425 15.6 11.2 139 14.8 10.9 136 KELLEY R.S. 8180 10.1 6.9 146 12.7 9.0 141 STEEL CREEK PARK 10200 8.2 6.1 134 11.2 7.0 160 ----- ----- Basin wide percent of average 137 142 UPPER BEAR RIVER BUG LAKE 7950 13.8 7.2 192 16.2 8.4 193 HAYDEN FORK 9212 10.2 5.5 185 17.0 9.1 187 KELLEY R.S. 8180 10.1 6.9 146 12.7 9.0 141 LILY LAKE 9156 9.5 4.9 194 12.6 8.0 158 MONTE CRISTO 8960 16.9 9.6 176 18.8 11.0 171 SALT RIVER SUMMIT 7760 7.7 4.7 164 11.5 8.0 144 TRIAL LAKE 9992 19.2 9.3 206 18.9 10.2 185 ----- ----- Basin wide percent of average 182 169 ----------------------------------------------------------------------------- -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.