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 24 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.6 7.1 135 12.3 9.3 132 COTTONWOOD CREEK 7670 13.9 8.4 165 18.4 12.0 153 GRAND TARGHEE 9260 23.2 -M * 17.3 -M * GRANITE CREEK 6770 10.2 6.5 157 12.6 8.5 148 GRASSY LAKE 7265 15.0 12.8 117 18.3 15.2 120 GROS VENTRE SUMMIT 8750 8.3 6.1 136 8.3 5.8 143 GUNSIGHT PASS 9820 8.8 -M * 9.0 -M * LEWIS LAKE DIVIDE 7850 16.7 12.9 129 18.7 15.6 120 PHILLIPS BENCH 8200 15.4 11.1 139 16.9 11.9 142 SALT RIVER SUMMIT 7760 7.7 4.6 167 11.5 7.9 146 SNAKE RIVER STATION 6920 7.5 6.9 109 13.4 9.9 135 SPRING CREEK DIVIDE 9000 15.6 11.2 139 16.4 11.5 143 THUMB DIVIDE 7980 10.6 6.7 158 11.3 8.1 140 TOGWOTEE PASS 9580 14.4 10.4 138 15.5 10.8 144 TWO OCEAN PLATEAU 9240 18.2 12.2 149 14.9 12.2 122 WILLOW CREEK 8380 15.3 12.6 121 20.5 13.9 147 ----- ----- Basin wide percent of average 138 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 11.9 10.2 117 11.8 9.0 131 BLACK BEAR 8170 19.3 15.3 126 20.5 15.7 131 CANYON 7870 7.5 5.3 142 9.0 7.0 129 FISHER CREEK 9100 16.9 14.6 116 17.3 15.2 114 MADISON PLATEAU 7750 12.5 9.9 126 14.6 11.2 130 NORTHEAST ENTRANCE 7350 5.3 4.4 120 7.6 5.8 131 PARKER PEAK 9400 13.2 9.4 140 13.5 7.6 178 SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138 THUMB DIVIDE 7980 10.6 6.7 158 11.3 8.1 140 TWO OCEAN PLATEAU 9240 18.2 12.2 149 14.9 12.2 122 WHISKEY CREEK 6800 8.4 6.6 127 11.0 8.9 124 WHITE MILL 8700 12.2 10.1 121 13.4 11.6 116 WOLVERINE 7650 7.0 5.0 140 7.2 6.4 113 ----- ----- Basin wide percent of average 129 129 WIND RIVER BURROUGHS CREEK 8750 7.6 6.0 127 8.0 7.2 111 CASTLE CREEK 8400 3.2 -M * 3.8 -M * COLD SPRINGS 9630 4.4 4.2 105 4.4 5.3 83 DEER PARK 9700 11.3 6.0 188 12.3 10.0 123 HOBBS PARK 10100 7.8 7.1 110 6.9 6.0 115 LITTLE WARM 9370 6.2 4.8 129 6.4 6.2 103 SOUTH PASS 9040 9.1 7.4 123 8.2 8.5 96 ST. LAWRENCE ALT 8620 2.7 3.5 77 3.6 4.4 82 TOGWOTEE PASS 9580 14.4 10.4 138 15.5 10.8 144 TOWNSEND CREEK 8700 4.1 4.0 103 6.1 5.7 107 ----- ----- Basin wide percent of average 127 111 BIGHORN BASIN BALD MTN. 9380 9.8 8.8 111 8.9 7.6 117 BEAR TRAP MEADOW 8200 2.8 2.4 117 3.9 4.2 93 BLACKWATER 9780 13.3 10.9 122 12.6 10.0 126 BONE SPRINGS DIV 9350 7.2 7.2 100 6.8 6.6 103 EVENING STAR 9200 14.9 12.3 121 16.3 11.7 139 GRAVE SPRINGS 8550 3.4 3.7 92 4.0 4.5 89 KIRWIN 9550 6.4 5.4 119 6.9 5.5 125 MARQUETTE 8760 1.4 4.7 30 3.2 5.0 64 MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.3 51 OWL CREEK 8975 2.1 2.5 84 2.5 2.7 93 POWDER RIVER PASS 9480 6.0 4.7 128 6.8 5.5 124 SHELL CREEK 9580 6.8 6.8 100 5.8 6.1 95 SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138 SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.4 111 TIMBER CREEK 7950 1.8 2.9 62 2.4 3.6 67 YOUNTS PEAK 8350 8.8 7.0 126 8.2 7.4 111 ----- ----- Basin wide percent of average 109 109 SHOSHONE RIVER BLACKWATER 9780 13.3 10.9 122 12.6 10.0 126 EVENING STAR 9200 14.9 12.3 121 16.3 11.7 139 KIRWIN 9550 6.4 5.4 119 6.9 5.5 125 MARQUETTE 8760 1.4 4.7 30 3.2 5.0 64 SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138 SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.4 111 YOUNTS PEAK 8350 8.8 7.0 126 8.2 7.4 111 ----- ----- Basin wide percent of average 115 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.8 2.4 117 3.9 4.2 93 BIG GOOSE 7990 2.4 3.9 62 4.0 4.2 95 BONE SPRINGS DIV 9350 7.2 7.2 100 6.8 6.6 103 BURGESS JUNCTION 7880 3.3 5.1 65 4.7 5.6 84 CLOUD PEAK RESERVOIR 9860 6.3 5.3 119 6.6 6.0 110 DOME LAKE 8880 3.2 5.6 57 5.4 6.4 84 GRAVE SPRINGS 8550 3.4 3.7 92 4.0 4.5 89 HANSEN SAWMILL 8360 2.4 2.9 83 2.9 4.0 73 LITTLE GOOSE 8870 3.1 -M * 6.8 -M * MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.3 51 POWDER RIVER PASS 9480 6.0 4.7 128 6.8 5.5 124 SOLDIER PARK 8720 1.9 -M * 3.5 -M * SUCKER CREEK 8880 4.8 4.8 100 5.5 6.1 90 TIE CREEK 6870 2.0 2.2 91 3.7 4.7 79 ----- ----- Basin wide percent of average 92 90 BELLE FOURCHE BLIND PARK 6890 2.6 3.0 87 7.9 5.7 139 COLE CANYON 5910 2.7 3.0 90 5.1 3.7 138 NORTH RAPID CREEK 6130 2.8 2.9 97 6.7 4.9 137 ----- ----- Basin wide percent of average 91 138 UPPER N. PLATTE RIVER COLUMBINE 9160 14.4 8.6 167 17.7 10.1 175 DIVIDE PEAK 8880 10.9 8.1 135 14.4 9.0 160 ELK RIVER 8700 10.4 6.0 173 13.3 7.9 168 JOE WRIGHT 10120 14.4 8.7 166 19.0 10.8 176 NORTH FRENCH CREEK 10130 20.2 11.9 170 20.1 10.8 186 OLD BATTLE 10000 21.3 13.3 160 23.1 14.3 162 SAGE CREEK BASIN 7850 7.0 4.7 149 10.0 5.2 192 SOUTH BRUSH CREEK 8440 9.1 4.6 198 12.4 7.1 175 TOWER 10500 26.2 18.5 142 27.2 16.0 170 WEBBER SPRINGS 9250 14.6 10.3 142 19.0 11.7 162 WILLOW CREEK PASS 9540 10.0 5.1 196 10.5 5.9 178 ----- ----- Basin wide percent of average 159 172 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.1 9.5 148 15.7 9.1 173 CASPER MTN. 7900 5.1 6.4 80 7.8 6.8 115 DEADMAN HILL 10220 6.8 6.9 99 13.2 7.2 183 DEER PARK 9700 11.3 6.0 188 12.3 10.0 123 LAPRELE CREEK 8375 5.2 4.8 108 6.4 5.6 114 RENO HILL 8400 6.4 6.0 107 8.3 6.6 126 ROACH 9700 10.9 6.5 168 13.7 7.6 180 SAND LAKE 10050 18.0 13.5 133 17.7 10.4 170 SOUTH PASS 9040 9.1 7.4 123 8.2 8.5 96 WINDY PEAK 7900 4.0 3.2 125 6.4 5.1 125 ----- ----- Basin wide percent of average 129 143 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.9 3.3 179 8.3 6.4 130 DIVIDE PEAK 8880 10.9 8.1 135 14.4 9.0 160 OLD BATTLE 10000 21.3 13.3 160 23.1 14.3 162 SANDSTONE RS 8150 6.3 4.4 143 12.9 7.9 163 WHISKEY PARK 8950 -M 9.6 * -M 11.7 * ----- ----- Basin wide percent of average 153 156 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.3 6.2 118 8.0 6.0 133 BLIND BULL SUM 8650 13.5 11.7 115 10.4 9.9 105 EAST RIM DIVIDE 7930 6.2 5.2 119 6.5 5.1 127 ELKHART PARK G.S. 9400 6.1 5.6 109 6.7 6.1 110 GROS VENTRE SUMMIT 8750 8.3 6.1 136 8.3 5.8 143 GUNSIGHT PASS 9820 8.8 -M * 9.0 -M * KENDALL R.S. 7740 6.3 5.8 109 8.0 6.1 131 LOOMIS PARK 8240 9.1 7.2 126 10.1 7.4 136 NEW FORK LAKE 8340 5.7 4.8 119 5.7 5.3 108 POCKET CREEK 9360 6.2 -M * 7.4 -M * SNIDER BASIN 8060 9.5 6.1 156 10.2 7.0 146 SPRING CREEK DIVIDE 9000 15.6 11.2 139 16.4 11.5 143 TRIPLE PEAK 8500 13.9 10.5 132 15.9 9.9 161 ----- ----- Basin wide percent of average 126 133 LOWER GREEN RIVER HAMS FORK 7840 6.9 4.7 147 7.8 5.2 150 HEWINTA 9519 5.4 3.5 154 9.4 6.5 145 HICKERSON PARK 9145 2.7 2.5 108 4.7 4.0 118 HOLE-IN-ROCK 9150 2.7 2.3 117 5.2 3.7 141 INDIAN CREEK 9425 15.6 11.0 142 14.8 10.8 137 KELLEY R.S. 8180 10.1 6.8 149 12.8 8.9 144 STEEL CREEK PARK 10200 8.2 6.0 137 11.2 6.9 162 ----- ----- Basin wide percent of average 140 143 UPPER BEAR RIVER BUG LAKE 7950 13.9 7.1 196 16.3 8.3 196 HAYDEN FORK 9212 10.3 5.4 191 16.9 9.0 188 KELLEY R.S. 8180 10.1 6.8 149 12.8 8.9 144 LILY LAKE 9156 9.5 4.8 198 12.6 7.9 159 MONTE CRISTO 8960 17.2 9.4 183 18.7 10.9 172 SALT RIVER SUMMIT 7760 7.7 4.6 167 11.5 7.9 146 TRIAL LAKE 9992 19.2 9.2 209 18.8 10.0 188 ----- ----- Basin wide percent of average 186 171 ----------------------------------------------------------------------------- -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.