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 16 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 7.1 5.5 129 8.4 8.2 102 BLACK BEAR 8170 13.7 13.2 104 14.0 14.3 98 BLIND BULL SUM 8650 8.9 7.2 124 7.6 7.6 100 COTTONWOOD CREEK 7670 6.8 6.5 105 8.3 9.0 92 EAST RIM DIVIDE 7930 4.7 3.1 152 4.8 4.4 109 GRAND TARGHEE 9260 17.1 13.3 129 12.8 12.2 105 GRANITE CREEK 6770 5.4 4.3 126 6.9 7.4 93 GRASSY LAKE 7265 9.6 9.4 102 11.4 13.3 86 GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.5 5.1 108 GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.2 123 LEWIS LAKE DIVIDE 7850 8.7 9.6 91 11.0 13.4 82 PHILLIPS BENCH 8200 8.1 8.1 100 9.2 10.1 91 SALT RIVER SUMMIT 7760 3.6 3.3 109 5.7 5.9 97 SNAKE RIVER STATION 6920 5.3 4.7 113 7.6 9.0 84 SPRING CREEK DIVIDE 9000 7.4 7.6 97 8.0 8.7 92 THUMB DIVIDE 7980 4.7 4.4 107 5.6 7.1 79 TOGWOTEE PASS 9580 9.6 8.9 108 9.0 9.4 96 TWO OCEAN PLATEAU 9240 12.0 10.5 114 10.1 10.5 96 WILLOW CREEK 8380 8.9 8.1 110 12.4 12.7 98 YOUNTS PEAK 8350 -M 5.4 * -M 6.3 * ----- ----- Basin Index (%) 113 95 MADISON-GALLATIN BLACK BEAR 8170 13.7 13.2 104 14.0 14.3 98 CANYON 7870 4.0 4.0 100 5.6 6.3 89 MADISON PLATEAU 7750 7.4 7.6 97 8.9 9.8 91 WEST YELLOWSTONE 6700 3.9 3.1 126 5.0 5.6 89 WHISKEY CREEK 6800 5.0 4.5 111 6.9 7.9 87 ----- ----- Basin Index (%) 105 92 YELLOWSTONE BEARTOOTH LAKE 9360 8.6 7.8 110 7.3 7.3 100 BURNT MTN 5880 3.7 1.6 231 9.6 6.0 160 CANYON 7870 4.0 4.0 100 5.6 6.3 89 COLE CREEK 7850 7.4 5.6 132 6.1 5.7 107 EVENING STAR 9200 11.9 8.9 134 12.4 10.8 115 FISHER CREEK 9100 12.9 11.5 112 11.6 12.1 96 NORTHEAST ENTRANCE 7350 3.2 2.6 123 4.2 5.1 82 PARKER PEAK 9400 9.9 7.8 127 9.4 7.1 132 SYLVAN LAKE 8420 7.7 7.1 108 9.5 9.2 103 THUMB DIVIDE 7980 4.7 4.4 107 5.6 7.1 79 TWO OCEAN PLATEAU 9240 12.0 10.5 114 10.1 10.5 96 WHITE MILL 8700 9.7 7.8 124 8.3 9.2 90 WOLVERINE 7650 4.2 3.3 127 4.3 5.2 83 ----- ----- Basin Index (%) 121 102 WIND RIVER BURROUGHS CREEK 8750 -M 4.9 * -M 6.3 * CASTLE CREEK 8400 2.7 -M * 4.5 -M * COLD SPRINGS 9630 4.2 2.7 156 5.8 4.3 135 DEER PARK 9700 4.6 5.0 92 6.3 7.2 88 HOBBS PARK 10100 5.8 5.8 100 5.8 5.4 107 KIRWIN 9550 6.5 4.0 162 5.6 4.8 117 LITTLE WARM 9370 5.1 3.7 138 6.6 5.2 127 OWL CREEK 8975 3.2 2.2 145 3.2 2.6 123 SOUTH PASS 9040 5.0 5.2 96 5.6 7.0 80 ST. LAWRENCE ALT 8620 2.4 2.6 92 5.0 3.8 132 TOGWOTEE PASS 9580 9.6 8.9 108 9.0 9.4 96 TOWNSEND CREEK 8700 2.7 3.2 84 4.3 5.1 84 ----- ----- Basin Index (%) 113 104 BIGHORN BASIN BALD MTN. 9380 9.2 6.8 135 7.8 6.5 120 BEAR TRAP MEADOW 8200 3.8 2.0 190 5.2 3.7 141 BONE SPRINGS DIV 9350 7.0 6.1 115 5.7 5.9 97 GRAVE SPRINGS 8550 4.1 2.5 164 5.4 4.2 129 KIRWIN 9550 6.5 4.0 162 5.6 4.8 117 MARQUETTE 8760 4.3 -M * 5.7 -M * MIDDLE POWDER 7760 5.8 3.7 157 6.2 5.2 119 OWL CREEK 8975 3.2 2.2 145 3.2 2.6 123 POWDER RIVER PASS 9480 5.2 3.7 141 5.6 5.0 112 SHELL CREEK 9580 6.6 5.9 112 5.7 5.5 104 TIMBER CREEK 7950 3.3 2.0 165 4.7 3.6 131 ----- ----- Basin Index (%) 141 117 SHOSHONE RIVER BLACKWATER 9780 11.4 8.6 133 9.0 8.4 107 EVENING STAR 9200 11.9 8.9 134 12.4 10.8 115 MARQUETTE 8760 4.3 -M * 5.7 -M * SYLVAN ROAD 7120 4.8 4.0 120 8.1 7.6 107 YOUNTS PEAK 8350 -M 5.4 * -M 6.3 * ----- ----- Basin Index (%) 131 110 POWDER RIVER BEAR TRAP MEADOW 8200 3.8 2.0 190 5.2 3.7 141 CLOUD PEAK RESERVOIR 9860 6.5 4.9 133 7.0 5.5 127 GRAVE SPRINGS 8550 4.1 2.5 164 5.4 4.2 129 HANSEN SAWMILL 8360 3.6 2.2 164 5.2 3.6 144 MIDDLE POWDER 7760 5.8 3.7 157 6.2 5.2 119 POWDER RIVER PASS 9480 5.2 3.7 141 5.6 5.0 112 SOLDIER PARK 8720 3.2 -M * 5.1 -M * ----- ----- Basin Index (%) 153 127 TONGUE RIVER BIG GOOSE 7990 3.9 3.0 130 6.5 4.6 141 BONE SPRINGS DIV 9350 7.0 6.1 115 5.7 5.9 97 BURGESS JUNCTION 7880 4.8 3.8 126 6.6 5.0 132 DOME LAKE 8880 2.9 4.4 66 5.0 5.8 86 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 6.4 4.0 160 7.7 5.6 138 TIE CREEK 6870 2.0 1.1 182 6.3 4.7 134 ----- ----- Basin Index (%) 121 120 BELLE FOURCHE COLE CANYON 5910 2.6 1.1 236 9.0 4.0 225 ----- ----- Basin Index (%) 236 225 CHEYENNE RIVER BASIN BLIND PARK 6890 3.5 2.1 167 9.4 5.1 184 NORTH RAPID CREEK 6130 3.7 2.4 154 9.2 4.3 214 ----- ----- Basin Index (%) 160 198 UPPER N. PLATTE ARAPAHO RIDGE 10960 8.5 7.4 115 8.7 9.0 97 BLACKHALL MTN 9820 10.9 -M * 12.2 -M * COLUMBINE 9160 6.5 6.5 100 9.3 9.3 100 DIVIDE PEAK 8880 6.3 6.2 102 9.9 8.4 118 JOE WRIGHT 10120 6.6 7.8 85 10.3 10.0 103 LAPRELE CREEK 8375 2.3 2.9 79 4.6 5.0 92 MED BOW 10500 9.4 -M * 11.9 -M * NORTH FRENCH CREEK 10130 9.6 9.2 104 11.4 9.7 118 NEVER SUMMER 10280 8.0 6.7 119 7.5 -M * OLD BATTLE 10000 10.3 10.1 102 12.1 13.2 92 RAWAH 9020 4.8 3.5 137 7.6 6.0 127 SAGE CREEK BASIN 7850 3.6 4.0 90 5.6 5.7 98 SAND LAKE 10050 9.7 9.2 105 10.0 9.2 109 SOUTH BRUSH CREEK 8440 4.5 3.7 122 7.2 5.9 122 TOWER 10500 13.4 15.6 86 15.8 15.0 105 WEBBER SPRINGS 9250 6.7 7.7 87 9.3 10.1 92 WILLOW CREEK PASS 9540 6.0 4.4 136 6.8 5.5 124 ZIRKEL 9340 7.8 7.3 107 11.1 11.0 101 ----- ----- Basin Index (%) 102 105 SWEETWATER DEER PARK 9700 4.6 5.0 92 6.3 7.2 88 LARSEN CREEK 9000 1.8 -M * 4.6 -M * SOUTH PASS 9040 5.0 5.2 96 5.6 7.0 80 ----- ----- Basin Index (%) 94 84 LOWER N. PLATTE CASPER MTN. 7900 6.8 4.6 148 7.6 6.4 119 LAPRELE CREEK 8375 2.3 2.9 79 4.6 5.0 92 RENO HILL 8400 7.1 4.8 148 9.2 6.0 153 WINDY PEAK 7900 2.1 2.4 88 4.7 4.4 107 ----- ----- Basin Index (%) 124 120 LARAMIE RIVER BROOKLYN LAKE 10240 7.0 6.4 109 7.7 7.5 103 CINNABAR PARK 9574 6.8 7.3 93 8.7 9.1 96 CROW CREEK 8330 2.2 3.6 61 4.7 4.4 107 DEADMAN HILL 10220 7.7 5.6 138 8.3 6.4 130 RAWAH 9020 4.8 3.5 137 7.6 6.0 127 ROACH 9700 6.0 5.1 118 8.2 7.2 114 ----- ----- Basin Index (%) 110 111 S. PLATTE BLACK MOUNTAIN 8920 4.3 -M * 5.6 -M * CROW CREEK 8330 2.2 3.6 61 4.7 4.4 107 DEADMAN HILL 10220 7.7 5.6 138 8.3 6.4 130 ----- ----- Basin Index (%) 108 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.1 2.7 152 7.7 5.8 133 DIVIDE PEAK 8880 6.3 6.2 102 9.9 8.4 118 ELK RIVER 8700 5.9 4.8 123 8.7 7.3 119 LITTLE SNAKE RIVER 8915 7.1 5.8 122 12.4 11.7 106 OLD BATTLE 10000 10.3 10.1 102 12.1 13.2 92 SAGE CREEK BASIN 7850 3.6 4.0 90 5.6 5.7 98 SANDSTONE RS 8150 3.9 3.5 111 7.7 7.0 110 WHISKEY PARK 8950 9.9 7.3 136 12.9 9.7 133 ----- ----- Basin Index (%) 115 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 4.6 91 4.2 5.1 82 BLIND BULL SUM 8650 8.9 7.2 124 7.6 7.6 100 EAST RIM DIVIDE 7930 4.7 3.1 152 4.8 4.4 109 ELKHART PARK G.S. 9400 5.4 4.2 129 5.9 5.2 113 GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.5 5.1 108 GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.2 123 KENDALL R.S. 7740 5.1 3.5 146 6.2 5.2 119 LOOMIS PARK 8240 5.5 4.6 120 6.8 6.4 106 NEW FORK LAKE 8340 4.0 3.3 121 4.4 4.2 105 POCKET CREEK 9360 4.5 -M * 4.0 -M * SNIDER BASIN 8060 4.1 3.7 111 5.3 5.2 102 SPRING CREEK DIVIDE 9000 7.4 7.6 97 8.0 8.7 92 TRIPLE PEAK 8500 6.8 6.5 105 8.6 8.9 97 ----- ----- Basin Index (%) 120 104 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.9 -M * 4.7 -M * BUCK PASTURE 9700 3.1 -M * 5.7 -M * EF BLACKS FORK GS 9360 1.6 -M * 4.1 -M * HAMS FORK 7840 1.7 3.3 52 3.9 4.2 93 HEWINTA 9519 1.9 2.8 68 5.0 5.6 89 HICKERSON PARK 9145 3.1 2.0 155 4.7 4.3 109 HOLE-IN-ROCK 9150 2.2 2.3 96 4.1 4.1 100 INDIAN CREEK 9425 6.0 7.8 77 6.4 7.8 82 KELLEY R.S. 8180 3.8 4.4 86 5.6 6.7 84 SPIRIT LK 10235 3.6 -M * 6.2 -M * STEEL CREEK PARK 10200 6.9 5.3 130 5.9 6.4 92 ----- ----- Basin Index (%) 92 91 UPPER BEAR RIVER BEAR RIVER RS 8777 2.2 -M * 4.7 -M * BUG LAKE 7950 3.9 5.1 76 5.3 7.4 72 BURTS MILLER RANCH 8000 2.2 -M * 3.0 -M * CHALK CREEK #1 8993 6.8 8.1 84 8.0 9.6 83 HAYDEN FORK 9212 3.0 4.1 73 6.3 7.9 80 KELLEY R.S. 8180 3.8 4.4 86 5.6 6.7 84 LILY LAKE 9156 3.2 4.2 76 6.1 6.8 90 MONTE CRISTO 8960 5.6 7.8 72 7.0 9.5 74 SALT RIVER SUMMIT 7760 3.6 3.3 109 5.7 5.9 97 ----- ----- Basin Index (%) 81 82 ----------------------------------------------------------------------------- -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.