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 WEDNESDAY: DECEMBER 11 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 7.0 4.9 143 8.4 7.5 112 BLACK BEAR 8170 13.5 12.1 112 13.5 13.1 103 BLIND BULL SUM 8650 8.6 6.4 134 7.5 7.0 107 COTTONWOOD CREEK 7670 6.6 5.8 114 8.2 8.2 100 EAST RIM DIVIDE 7930 4.6 2.5 184 4.6 4.1 112 GRAND TARGHEE 9260 16.9 11.0 154 12.4 10.8 115 GRANITE CREEK 6770 5.2 3.8 137 6.7 6.7 100 GRASSY LAKE 7265 9.4 8.4 112 11.2 12.1 93 GROS VENTRE SUMMIT 8750 5.6 4.5 124 5.4 4.8 112 GUNSIGHT PASS 9820 6.2 4.0 155 6.1 4.8 127 LEWIS LAKE DIVIDE 7850 8.6 9.0 96 10.9 12.3 89 PHILLIPS BENCH 8200 7.8 7.4 105 8.9 9.3 96 SALT RIVER SUMMIT 7760 3.3 2.9 114 5.5 5.4 102 SNAKE RIVER STATION 6920 5.3 4.2 126 7.6 8.1 94 SPRING CREEK DIVIDE 9000 7.2 6.4 112 7.7 8.0 96 THUMB DIVIDE 7980 4.4 3.9 113 5.3 6.5 82 TOGWOTEE PASS 9580 9.4 8.3 113 8.8 8.8 100 TWO OCEAN PLATEAU 9240 12.0 10.1 119 9.9 9.7 102 WILLOW CREEK 8380 8.7 7.3 119 12.2 11.6 105 YOUNTS PEAK 8350 -M 5.0 * -M 5.9 * ----- ----- Basin Index (%) 122 101 MADISON-GALLATIN BLACK BEAR 8170 13.5 12.1 112 13.5 13.1 103 CANYON 7870 4.1 3.4 121 5.6 5.8 97 MADISON PLATEAU 7750 7.1 7.0 101 8.8 9.0 98 WEST YELLOWSTONE 6700 3.7 2.7 137 5.1 5.0 102 WHISKEY CREEK 6800 4.9 4.2 117 6.8 7.3 93 ----- ----- Basin Index (%) 113 99 YELLOWSTONE BEARTOOTH LAKE 9360 8.3 7.3 114 6.9 6.7 103 BURNT MTN 5880 3.5 1.5 233 9.4 5.8 162 CANYON 7870 4.1 3.4 121 5.6 5.8 97 COLE CREEK 7850 7.3 5.2 140 6.1 5.5 111 EVENING STAR 9200 11.6 8.3 140 11.9 10.0 119 FISHER CREEK 9100 12.5 10.3 121 10.9 11.2 97 NORTHEAST ENTRANCE 7350 3.3 2.3 143 4.1 4.7 87 PARKER PEAK 9400 9.4 7.1 132 8.9 6.6 135 SYLVAN LAKE 8420 7.5 6.4 117 9.3 8.6 108 THUMB DIVIDE 7980 4.4 3.9 113 5.3 6.5 82 TWO OCEAN PLATEAU 9240 12.0 10.1 119 9.9 9.7 102 WHITE MILL 8700 9.5 7.0 136 7.8 8.6 91 WOLVERINE 7650 4.0 3.0 133 4.1 4.8 85 ----- ----- Basin Index (%) 128 106 WIND RIVER BURROUGHS CREEK 8750 -M 4.6 * -M 6.0 * CASTLE CREEK 8400 2.6 -M * 4.4 -M * COLD SPRINGS 9630 4.0 2.6 154 6.2 4.1 151 DEER PARK 9700 4.6 4.8 96 6.0 6.7 90 HOBBS PARK 10100 5.8 5.4 107 5.7 5.1 112 KIRWIN 9550 6.3 3.8 166 5.3 4.6 115 LITTLE WARM 9370 5.0 3.5 143 6.3 5.0 126 OWL CREEK 8975 3.0 2.0 150 3.1 2.4 129 SOUTH PASS 9040 4.8 4.8 100 5.2 6.6 79 ST. LAWRENCE ALT 8620 2.5 2.4 104 5.0 3.7 135 TOGWOTEE PASS 9580 9.4 8.3 113 8.8 8.8 100 TOWNSEND CREEK 8700 2.5 3.0 83 4.1 4.9 84 ----- ----- Basin Index (%) 118 107 BIGHORN BASIN BALD MTN. 9380 8.8 6.4 138 7.4 5.9 125 BEAR TRAP MEADOW 8200 3.5 1.8 194 4.9 3.6 136 BONE SPRINGS DIV 9350 6.8 5.8 117 5.4 5.6 96 GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132 KIRWIN 9550 6.3 3.8 166 5.3 4.6 115 MARQUETTE 8760 4.4 -M * 5.6 -M * MIDDLE POWDER 7760 5.4 3.4 159 6.0 4.9 122 OWL CREEK 8975 3.0 2.0 150 3.1 2.4 129 POWDER RIVER PASS 9480 5.2 3.5 149 5.3 4.6 115 SHELL CREEK 9580 6.3 5.3 119 5.5 5.2 106 TIMBER CREEK 7950 3.2 1.9 168 4.6 3.4 135 ----- ----- Basin Index (%) 144 119 SHOSHONE RIVER BLACKWATER 9780 11.1 7.8 142 8.5 7.8 109 EVENING STAR 9200 11.6 8.3 140 11.9 10.0 119 MARQUETTE 8760 4.4 -M * 5.6 -M * SYLVAN ROAD 7120 4.7 3.6 131 8.0 7.0 114 YOUNTS PEAK 8350 -M 5.0 * -M 5.9 * ----- ----- Basin Index (%) 139 115 POWDER RIVER BEAR TRAP MEADOW 8200 3.5 1.8 194 4.9 3.6 136 CLOUD PEAK RESERVOIR 9860 6.1 4.4 139 6.6 5.2 127 GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132 HANSEN SAWMILL 8360 3.4 2.0 170 5.0 3.4 147 MIDDLE POWDER 7760 5.4 3.4 159 6.0 4.9 122 POWDER RIVER PASS 9480 5.2 3.5 149 5.3 4.6 115 SOLDIER PARK 8720 3.0 -M * 5.0 -M * ----- ----- Basin Index (%) 157 129 TONGUE RIVER BIG GOOSE 7990 3.6 2.9 124 6.1 4.4 139 BONE SPRINGS DIV 9350 6.8 5.8 117 5.4 5.6 96 BURGESS JUNCTION 7880 4.7 3.5 134 6.4 4.7 136 DOME LAKE 8880 2.6 4.2 62 4.8 5.4 89 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 6.3 3.8 166 7.4 5.3 140 TIE CREEK 6870 1.9 1.1 173 6.1 4.6 133 ----- ----- Basin Index (%) 122 121 BELLE FOURCHE COLE CANYON 5910 1.7 1.1 155 9.1 3.9 233 ----- ----- Basin Index (%) 155 233 CHEYENNE RIVER BASIN BLIND PARK 6890 3.1 1.9 163 9.2 4.8 192 NORTH RAPID CREEK 6130 4.0 2.0 200 9.0 4.0 225 ----- ----- Basin Index (%) 182 207 UPPER N. PLATTE ARAPAHO RIDGE 10960 8.3 6.8 122 8.6 8.4 102 BLACKHALL MTN 9820 10.7 -M * 12.1 -M * COLUMBINE 9160 6.3 5.7 111 9.0 8.5 106 DIVIDE PEAK 8880 6.3 5.7 111 9.7 7.8 124 JOE WRIGHT 10120 6.3 7.0 90 10.2 9.3 110 LAPRELE CREEK 8375 1.9 2.7 70 4.4 4.7 94 MED BOW 10500 9.4 -M * 11.9 -M * NORTH FRENCH CREEK 10130 9.5 8.4 113 11.2 8.9 126 NEVER SUMMER 10280 8.0 6.0 133 7.5 -M * OLD BATTLE 10000 10.1 9.1 111 11.7 12.0 98 RAWAH 9020 4.7 3.1 152 7.6 5.7 133 SAGE CREEK BASIN 7850 3.4 3.4 100 5.6 5.3 106 SAND LAKE 10050 9.4 8.5 111 9.8 8.5 115 SOUTH BRUSH CREEK 8440 4.4 3.2 138 6.9 5.4 128 TOWER 10500 13.2 13.7 96 15.4 13.8 112 WEBBER SPRINGS 9250 6.5 6.5 100 9.1 9.1 100 WILLOW CREEK PASS 9540 6.1 4.0 152 6.7 5.1 131 ZIRKEL 9340 7.7 6.1 126 10.9 10.1 108 ----- ----- Basin Index (%) 112 112 SWEETWATER DEER PARK 9700 4.6 4.8 96 6.0 6.7 90 LARSEN CREEK 9000 1.4 -M * 4.2 -M * SOUTH PASS 9040 4.8 4.8 100 5.2 6.6 79 ----- ----- Basin Index (%) 98 84 LOWER N. PLATTE CASPER MTN. 7900 6.2 4.1 151 7.4 6.1 121 LAPRELE CREEK 8375 1.9 2.7 70 4.4 4.7 94 RENO HILL 8400 6.9 4.4 157 8.9 5.7 156 WINDY PEAK 7900 2.1 2.2 95 4.7 4.1 115 ----- ----- Basin Index (%) 128 123 LARAMIE RIVER BROOKLYN LAKE 10240 6.7 5.5 122 7.7 6.9 112 CINNABAR PARK 9574 6.7 6.6 102 8.5 8.4 101 CROW CREEK 8330 2.2 3.4 65 4.6 4.2 110 DEADMAN HILL 10220 7.6 5.2 146 8.2 6.0 137 RAWAH 9020 4.7 3.1 152 7.6 5.7 133 ROACH 9700 5.9 4.7 126 8.1 6.7 121 ----- ----- Basin Index (%) 119 118 S. PLATTE BLACK MOUNTAIN 8920 4.1 -M * 5.6 -M * CROW CREEK 8330 2.2 3.4 65 4.6 4.2 110 DEADMAN HILL 10220 7.6 5.2 146 8.2 6.0 137 ----- ----- Basin Index (%) 114 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.1 2.3 178 7.5 5.3 142 DIVIDE PEAK 8880 6.3 5.7 111 9.7 7.8 124 ELK RIVER 8700 5.8 4.2 138 8.5 6.7 127 LITTLE SNAKE RIVER 8915 7.1 4.8 148 12.2 10.9 112 OLD BATTLE 10000 10.1 9.1 111 11.7 12.0 98 SAGE CREEK BASIN 7850 3.4 3.4 100 5.6 5.3 106 SANDSTONE RS 8150 3.9 3.0 130 7.7 6.3 122 WHISKEY PARK 8950 9.8 6.7 146 12.8 8.8 145 ----- ----- Basin Index (%) 129 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.7 4.2 88 4.0 4.8 83 BLIND BULL SUM 8650 8.6 6.4 134 7.5 7.0 107 EAST RIM DIVIDE 7930 4.6 2.5 184 4.6 4.1 112 ELKHART PARK G.S. 9400 5.1 3.9 131 5.5 4.9 112 GROS VENTRE SUMMIT 8750 5.6 4.5 124 5.4 4.8 112 GUNSIGHT PASS 9820 6.2 4.0 155 6.1 4.8 127 KENDALL R.S. 7740 5.1 3.3 155 5.9 4.8 123 LOOMIS PARK 8240 5.2 4.0 130 6.6 5.9 112 NEW FORK LAKE 8340 3.5 2.9 121 4.1 3.9 105 POCKET CREEK 9360 4.4 -M * 3.8 -M * SNIDER BASIN 8060 -M 3.3 * -M 4.8 * SPRING CREEK DIVIDE 9000 7.2 6.4 112 7.7 8.0 96 TRIPLE PEAK 8500 6.6 5.8 114 8.3 8.3 100 ----- ----- Basin Index (%) 128 107 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.8 -M * 4.6 -M * BUCK PASTURE 9700 3.0 -M * 5.7 -M * EF BLACKS FORK GS 9360 2.2 -M * 4.2 -M * HAMS FORK 7840 1.6 3.0 53 3.9 4.0 98 HEWINTA 9519 1.6 2.3 70 4.8 5.2 92 HICKERSON PARK 9145 2.9 1.8 161 4.3 4.2 102 HOLE-IN-ROCK 9150 1.9 2.0 95 4.0 3.9 103 INDIAN CREEK 9425 5.7 6.9 83 6.2 7.2 86 KELLEY R.S. 8180 3.6 3.9 92 5.1 6.1 84 SPIRIT LK 10235 3.8 -M * 5.8 -M * STEEL CREEK PARK 10200 4.8 5.0 96 5.8 6.0 97 ----- ----- Basin Index (%) 89 93 UPPER BEAR RIVER BEAR RIVER RS 8777 2.0 -M * 4.5 -M * BUG LAKE 7950 4.1 4.5 91 5.1 6.8 75 BURTS MILLER RANCH 8000 2.0 -M * 2.8 -M * CHALK CREEK #1 8993 6.6 7.3 90 8.0 9.0 89 HAYDEN FORK 9212 2.9 3.6 81 6.2 7.3 85 KELLEY R.S. 8180 3.6 3.9 92 5.1 6.1 84 LILY LAKE 9156 3.0 3.7 81 6.0 6.3 95 MONTE CRISTO 8960 5.6 7.0 80 6.6 8.7 76 SALT RIVER SUMMIT 7760 3.3 2.9 114 5.5 5.4 102 ----- ----- Basin Index (%) 88 86 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.