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 THURSDAY: DECEMBER 12 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 6.9 5.1 135 8.5 7.6 112 BLACK BEAR 8170 13.6 12.3 111 13.8 13.3 104 BLIND BULL SUM 8650 8.7 6.6 132 7.6 7.1 107 COTTONWOOD CREEK 7670 6.7 5.9 114 8.3 8.4 99 EAST RIM DIVIDE 7930 4.6 2.6 177 4.7 4.1 115 GRAND TARGHEE 9260 17.0 11.4 149 12.6 10.9 116 GRANITE CREEK 6770 5.1 3.9 131 6.6 6.8 97 GRASSY LAKE 7265 9.4 8.6 109 11.1 12.3 90 GROS VENTRE SUMMIT 8750 5.7 4.5 127 5.4 4.8 112 GUNSIGHT PASS 9820 6.3 4.1 154 6.3 4.8 131 LEWIS LAKE DIVIDE 7850 8.6 9.2 93 10.9 12.5 87 PHILLIPS BENCH 8200 7.9 7.5 105 9.0 9.4 96 SALT RIVER SUMMIT 7760 3.4 3.0 113 5.6 5.5 102 SNAKE RIVER STATION 6920 5.3 4.3 123 7.6 8.2 93 SPRING CREEK DIVIDE 9000 7.3 6.6 111 7.8 8.1 96 THUMB DIVIDE 7980 4.5 4.0 112 5.4 6.6 82 TOGWOTEE PASS 9580 9.4 8.4 112 8.9 8.9 100 TWO OCEAN PLATEAU 9240 11.9 10.2 117 9.9 9.8 101 WILLOW CREEK 8380 8.7 7.5 116 12.3 11.7 105 YOUNTS PEAK 8350 -M 5.1 * -M 6.0 * ----- ----- Basin Index (%) 120 101 MADISON-GALLATIN BLACK BEAR 8170 13.6 12.3 111 13.8 13.3 104 CANYON 7870 4.0 3.5 114 5.6 5.8 97 MADISON PLATEAU 7750 7.3 7.1 103 8.8 9.1 97 WEST YELLOWSTONE 6700 3.8 2.8 136 5.1 5.0 102 WHISKEY CREEK 6800 5.0 4.2 119 6.9 7.4 93 ----- ----- Basin Index (%) 113 99 YELLOWSTONE BEARTOOTH LAKE 9360 8.4 7.4 114 7.0 6.8 103 BURNT MTN 5880 3.7 1.5 247 9.5 5.8 164 CANYON 7870 4.0 3.5 114 5.6 5.8 97 COLE CREEK 7850 7.5 5.3 142 6.1 5.5 111 EVENING STAR 9200 11.6 8.4 138 12.0 10.1 119 FISHER CREEK 9100 12.6 10.5 120 11.2 11.3 99 NORTHEAST ENTRANCE 7350 3.2 2.4 133 4.1 4.8 85 PARKER PEAK 9400 9.5 7.2 132 9.1 6.7 136 SYLVAN LAKE 8420 7.6 6.5 117 9.3 8.7 107 THUMB DIVIDE 7980 4.5 4.0 112 5.4 6.6 82 TWO OCEAN PLATEAU 9240 11.9 10.2 117 9.9 9.8 101 WHITE MILL 8700 9.5 7.1 134 7.9 8.6 92 WOLVERINE 7650 4.0 3.1 129 4.1 4.9 84 ----- ----- Basin Index (%) 127 106 WIND RIVER BURROUGHS CREEK 8750 -M 4.7 * -M 6.0 * CASTLE CREEK 8400 2.6 -M * 4.4 -M * COLD SPRINGS 9630 4.2 2.6 162 6.2 4.2 148 DEER PARK 9700 4.6 4.8 96 6.1 6.7 91 HOBBS PARK 10100 5.9 5.5 107 5.9 5.2 113 KIRWIN 9550 6.4 3.9 164 5.5 4.6 120 LITTLE WARM 9370 5.1 3.5 146 6.5 5.0 130 OWL CREEK 8975 3.1 2.0 155 3.2 2.5 128 SOUTH PASS 9040 4.9 4.9 100 5.4 6.6 82 ST. LAWRENCE ALT 8620 2.5 2.5 100 5.0 3.7 135 TOGWOTEE PASS 9580 9.4 8.4 112 8.9 8.9 100 TOWNSEND CREEK 8700 2.5 3.0 83 4.1 5.0 82 ----- ----- Basin Index (%) 118 108 BIGHORN BASIN BALD MTN. 9380 8.9 6.5 137 7.6 6.0 127 BEAR TRAP MEADOW 8200 3.6 1.8 200 5.0 3.6 139 BONE SPRINGS DIV 9350 6.8 5.8 117 5.5 5.6 98 GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132 KIRWIN 9550 6.4 3.9 164 5.5 4.6 120 MARQUETTE 8760 4.5 -M * 5.7 -M * MIDDLE POWDER 7760 5.5 3.4 162 6.0 4.9 122 OWL CREEK 8975 3.1 2.0 155 3.2 2.5 128 POWDER RIVER PASS 9480 5.1 3.5 146 5.4 4.7 115 SHELL CREEK 9580 6.3 5.4 117 5.6 5.2 108 TIMBER CREEK 7950 3.2 2.0 160 4.7 3.4 138 ----- ----- Basin Index (%) 144 121 SHOSHONE RIVER BLACKWATER 9780 11.3 7.9 143 8.8 7.9 111 EVENING STAR 9200 11.6 8.4 138 12.0 10.1 119 MARQUETTE 8760 4.5 -M * 5.7 -M * SYLVAN ROAD 7120 4.7 3.7 127 8.0 7.1 113 YOUNTS PEAK 8350 -M 5.1 * -M 6.0 * ----- ----- Basin Index (%) 138 115 POWDER RIVER BEAR TRAP MEADOW 8200 3.6 1.8 200 5.0 3.6 139 CLOUD PEAK RESERVOIR 9860 6.3 4.5 140 6.8 5.2 131 GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132 HANSEN SAWMILL 8360 3.5 2.0 175 5.2 3.4 153 MIDDLE POWDER 7760 5.5 3.4 162 6.0 4.9 122 POWDER RIVER PASS 9480 5.1 3.5 146 5.4 4.7 115 SOLDIER PARK 8720 3.0 -M * 5.0 -M * ----- ----- Basin Index (%) 159 131 TONGUE RIVER BIG GOOSE 7990 3.8 2.9 131 6.4 4.4 145 BONE SPRINGS DIV 9350 6.8 5.8 117 5.5 5.6 98 BURGESS JUNCTION 7880 4.8 3.5 137 6.5 4.7 138 DOME LAKE 8880 2.7 4.2 64 4.9 5.5 89 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 6.3 3.9 162 7.5 5.3 142 TIE CREEK 6870 2.0 1.1 182 6.2 4.6 135 ----- ----- Basin Index (%) 123 123 BELLE FOURCHE COLE CANYON 5910 2.0 1.1 182 8.9 3.9 228 ----- ----- Basin Index (%) 182 228 CHEYENNE RIVER BASIN BLIND PARK 6890 3.2 2.0 160 9.2 4.8 192 NORTH RAPID CREEK 6130 3.9 2.1 186 9.0 4.1 220 ----- ----- Basin Index (%) 173 204 UPPER N. PLATTE ARAPAHO RIDGE 10960 8.3 6.9 120 8.6 8.5 101 BLACKHALL MTN 9820 10.7 -M * 12.3 -M * COLUMBINE 9160 6.2 5.8 107 8.9 8.6 103 DIVIDE PEAK 8880 6.3 5.7 111 9.8 7.8 126 JOE WRIGHT 10120 6.5 7.2 90 10.2 9.4 109 LAPRELE CREEK 8375 2.0 2.8 71 4.4 4.7 94 MED BOW 10500 9.4 -M * 11.8 -M * NORTH FRENCH CREEK 10130 9.5 8.6 110 11.2 9.0 124 NEVER SUMMER 10280 7.9 6.2 127 7.5 -M * OLD BATTLE 10000 10.1 9.2 110 11.8 12.2 97 RAWAH 9020 4.7 3.2 147 7.6 5.8 131 SAGE CREEK BASIN 7850 3.6 3.6 100 5.6 5.4 104 SAND LAKE 10050 9.5 8.6 110 9.9 8.6 115 SOUTH BRUSH CREEK 8440 4.4 3.3 133 6.9 5.5 125 TOWER 10500 13.1 14.0 94 15.5 14.0 111 WEBBER SPRINGS 9250 6.6 6.8 97 9.2 9.2 100 WILLOW CREEK PASS 9540 6.0 4.0 150 6.6 5.2 127 ZIRKEL 9340 7.7 6.4 120 10.9 10.2 107 ----- ----- Basin Index (%) 110 110 SWEETWATER DEER PARK 9700 4.6 4.8 96 6.1 6.7 91 LARSEN CREEK 9000 1.6 -M * 4.4 -M * SOUTH PASS 9040 4.9 4.9 100 5.4 6.6 82 ----- ----- Basin Index (%) 98 86 LOWER N. PLATTE CASPER MTN. 7900 6.5 4.2 155 7.5 6.1 123 LAPRELE CREEK 8375 2.0 2.8 71 4.4 4.7 94 RENO HILL 8400 7.0 4.5 156 9.1 5.7 160 WINDY PEAK 7900 2.2 2.2 100 4.7 4.1 115 ----- ----- Basin Index (%) 129 125 LARAMIE RIVER BROOKLYN LAKE 10240 6.8 5.7 119 7.7 7.0 110 CINNABAR PARK 9574 6.7 6.8 99 8.6 8.5 101 CROW CREEK 8330 2.3 3.4 68 4.7 4.3 109 DEADMAN HILL 10220 7.6 5.2 146 8.2 6.1 134 RAWAH 9020 4.7 3.2 147 7.6 5.8 131 ROACH 9700 5.9 4.7 126 8.2 6.8 121 ----- ----- Basin Index (%) 117 117 S. PLATTE BLACK MOUNTAIN 8920 4.2 -M * 5.6 -M * CROW CREEK 8330 2.3 3.4 68 4.7 4.3 109 DEADMAN HILL 10220 7.6 5.2 146 8.2 6.1 134 ----- ----- Basin Index (%) 115 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.1 2.4 171 7.4 5.4 137 DIVIDE PEAK 8880 6.3 5.7 111 9.8 7.8 126 ELK RIVER 8700 5.8 4.3 135 8.6 6.8 126 LITTLE SNAKE RIVER 8915 7.0 4.9 143 12.1 11.0 110 OLD BATTLE 10000 10.1 9.2 110 11.8 12.2 97 SAGE CREEK BASIN 7850 3.6 3.6 100 5.6 5.4 104 SANDSTONE RS 8150 3.9 3.1 126 7.6 6.4 119 WHISKEY PARK 8950 9.9 6.8 146 12.8 8.9 144 ----- ----- Basin Index (%) 127 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.9 4.3 91 4.0 4.9 82 BLIND BULL SUM 8650 8.7 6.6 132 7.6 7.1 107 EAST RIM DIVIDE 7930 4.6 2.6 177 4.7 4.1 115 ELKHART PARK G.S. 9400 5.2 4.0 130 5.6 4.9 114 GROS VENTRE SUMMIT 8750 5.7 4.5 127 5.4 4.8 112 GUNSIGHT PASS 9820 6.3 4.1 154 6.3 4.8 131 KENDALL R.S. 7740 5.1 3.3 155 6.0 4.8 125 LOOMIS PARK 8240 5.3 4.1 129 6.7 6.0 112 NEW FORK LAKE 8340 3.7 3.0 123 4.2 4.0 105 POCKET CREEK 9360 4.6 -M * 3.9 -M * SNIDER BASIN 8060 4.0 3.4 118 5.0 4.8 104 SPRING CREEK DIVIDE 9000 7.3 6.6 111 7.8 8.1 96 TRIPLE PEAK 8500 6.6 5.9 112 8.3 8.4 99 ----- ----- Basin Index (%) 127 107 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.6 -M * 4.6 -M * BUCK PASTURE 9700 2.9 -M * 5.7 -M * EF BLACKS FORK GS 9360 1.6 -M * 4.1 -M * HAMS FORK 7840 1.6 3.0 53 3.9 4.0 98 HEWINTA 9519 1.5 2.4 62 4.8 5.3 91 HICKERSON PARK 9145 2.8 1.9 147 4.3 4.2 102 HOLE-IN-ROCK 9150 1.9 2.1 90 4.0 4.0 100 INDIAN CREEK 9425 5.8 7.1 82 6.3 7.3 86 KELLEY R.S. 8180 3.6 4.0 90 5.3 6.2 85 SPIRIT LK 10235 3.4 -M * 6.0 -M * STEEL CREEK PARK 10200 7.1 5.0 142 5.9 6.0 98 ----- ----- Basin Index (%) 95 93 UPPER BEAR RIVER BEAR RIVER RS 8777 2.0 -M * 4.6 -M * BUG LAKE 7950 4.3 4.6 93 5.2 6.9 75 BURTS MILLER RANCH 8000 2.1 -M * 2.8 -M * CHALK CREEK #1 8993 6.6 7.5 88 8.0 9.1 88 HAYDEN FORK 9212 2.9 3.7 78 6.3 7.4 85 KELLEY R.S. 8180 3.6 4.0 90 5.3 6.2 85 LILY LAKE 9156 3.1 3.8 82 6.0 6.4 94 MONTE CRISTO 8960 5.7 7.2 79 6.8 8.9 76 SALT RIVER SUMMIT 7760 3.4 3.0 113 5.6 5.5 102 ----- ----- 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.