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 6 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 6.4 4.4 145 8.1 6.8 119 BLACK BEAR 8170 13.0 10.2 127 13.1 11.8 111 BLIND BULL SUM 8650 8.4 5.9 142 7.2 6.4 112 COTTONWOOD CREEK 7670 6.3 5.2 121 8.0 7.6 105 EAST RIM DIVIDE 7930 3.3 2.2 150 4.3 3.8 113 GRAND TARGHEE 9260 16.1 10.2 158 11.4 10.3 111 GRANITE CREEK 6770 4.8 3.0 160 6.3 6.1 103 GRASSY LAKE 7265 8.8 7.2 122 9.9 11.1 89 GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.1 4.5 113 GUNSIGHT PASS 9820 5.9 3.6 164 5.7 4.5 127 LEWIS LAKE DIVIDE 7850 8.2 8.3 99 10.0 11.1 90 PHILLIPS BENCH 8200 7.2 6.6 109 8.4 8.3 101 SALT RIVER SUMMIT 7760 2.9 2.3 126 5.2 4.9 106 SNAKE RIVER STATION 6920 5.0 3.5 143 7.2 7.4 97 SPRING CREEK DIVIDE 9000 6.9 5.8 119 7.2 7.3 99 THUMB DIVIDE 7980 3.9 3.6 108 4.9 6.0 82 TOGWOTEE PASS 9580 8.9 7.9 113 8.3 8.0 104 TWO OCEAN PLATEAU 9240 11.7 9.4 124 9.4 9.0 104 WILLOW CREEK 8380 8.3 6.5 128 11.8 10.6 111 YOUNTS PEAK 8350 -M 4.6 * -M 5.6 * ----- ----- Basin Index (%) 129 104 MADISON-GALLATIN BLACK BEAR 8170 13.0 10.2 127 13.1 11.8 111 CANYON 7870 3.9 3.2 122 5.1 5.4 94 MADISON PLATEAU 7750 6.7 6.1 110 8.4 8.2 102 WEST YELLOWSTONE 6700 3.5 2.4 146 4.7 4.7 100 WHISKEY CREEK 6800 4.4 3.8 116 6.3 6.7 94 ----- ----- Basin Index (%) 123 102 YELLOWSTONE BEARTOOTH LAKE 9360 7.9 6.8 116 6.6 6.2 106 BURNT MTN 5880 3.3 1.3 254 8.8 5.5 160 CANYON 7870 3.9 3.2 122 5.1 5.4 94 COLE CREEK 7850 6.7 4.7 143 5.6 5.2 108 EVENING STAR 9200 11.3 7.8 145 11.2 9.3 120 FISHER CREEK 9100 11.8 9.5 124 10.4 10.2 102 NORTHEAST ENTRANCE 7350 3.2 2.0 160 3.8 4.5 84 PARKER PEAK 9400 9.0 6.7 134 8.3 6.2 134 SYLVAN LAKE 8420 6.8 5.9 115 8.4 8.0 105 THUMB DIVIDE 7980 3.9 3.6 108 4.9 6.0 82 TWO OCEAN PLATEAU 9240 11.7 9.4 124 9.4 9.0 104 WHITE MILL 8700 9.2 6.7 137 7.6 7.9 96 WOLVERINE 7650 3.5 2.6 135 3.8 4.5 84 ----- ----- Basin Index (%) 131 107 WIND RIVER BURROUGHS CREEK 8750 -M 4.2 * -M 5.4 * CASTLE CREEK 8400 2.4 -M * 4.3 -M * COLD SPRINGS 9630 3.9 2.4 162 5.9 3.8 155 DEER PARK 9700 4.7 4.4 107 5.7 6.0 95 HOBBS PARK 10100 5.5 4.9 112 5.2 4.8 108 KIRWIN 9550 6.2 3.6 172 5.2 4.3 121 LITTLE WARM 9370 5.0 3.3 152 5.9 4.6 128 OWL CREEK 8975 2.9 1.8 161 3.0 2.3 130 SOUTH PASS 9040 4.6 4.2 110 4.9 5.9 83 ST. LAWRENCE ALT 8620 2.1 2.2 95 4.7 3.4 138 TOGWOTEE PASS 9580 8.9 7.9 113 8.3 8.0 104 TOWNSEND CREEK 8700 2.2 2.7 81 4.0 4.5 89 ----- ----- Basin Index (%) 123 111 BIGHORN BASIN BALD MTN. 9380 8.2 6.1 134 6.6 5.6 118 BEAR TRAP MEADOW 8200 3.4 1.7 200 4.7 3.4 138 BONE SPRINGS DIV 9350 6.4 5.4 119 5.1 5.3 96 GRAVE SPRINGS 8550 4.2 2.1 200 5.3 3.9 136 KIRWIN 9550 6.2 3.6 172 5.2 4.3 121 MARQUETTE 8760 4.5 -M * 5.4 -M * MIDDLE POWDER 7760 5.5 3.2 172 6.0 4.6 130 OWL CREEK 8975 2.9 1.8 161 3.0 2.3 130 POWDER RIVER PASS 9480 4.9 3.3 148 5.0 4.4 114 SHELL CREEK 9580 6.0 5.1 118 5.5 4.9 112 TIMBER CREEK 7950 3.0 1.8 167 4.7 3.4 138 ----- ----- Basin Index (%) 149 121 SHOSHONE RIVER BLACKWATER 9780 10.8 7.5 144 8.0 7.2 111 EVENING STAR 9200 11.3 7.8 145 11.2 9.3 120 MARQUETTE 8760 4.5 -M * 5.4 -M * SYLVAN ROAD 7120 4.3 3.2 134 7.3 6.6 111 YOUNTS PEAK 8350 -M 4.6 * -M 5.6 * ----- ----- Basin Index (%) 143 115 POWDER RIVER BEAR TRAP MEADOW 8200 3.4 1.7 200 4.7 3.4 138 CLOUD PEAK RESERVOIR 9860 5.5 4.1 134 6.4 5.0 128 GRAVE SPRINGS 8550 4.2 2.1 200 5.3 3.9 136 HANSEN SAWMILL 8360 3.3 1.8 183 4.9 3.2 153 MIDDLE POWDER 7760 5.5 3.2 172 6.0 4.6 130 POWDER RIVER PASS 9480 4.9 3.3 148 5.0 4.4 114 SOLDIER PARK 8720 2.8 -M * 4.8 -M * ----- ----- Basin Index (%) 165 132 TONGUE RIVER BIG GOOSE 7990 3.2 2.7 119 5.5 4.2 131 BONE SPRINGS DIV 9350 6.4 5.4 119 5.1 5.3 96 BURGESS JUNCTION 7880 4.5 3.3 136 6.0 4.4 136 DOME LAKE 8880 2.0 4.0 50 4.6 5.2 88 LITTLE GOOSE 8870 4.2 -M * 6.8 -M * SUCKER CREEK 8880 5.9 3.5 169 6.9 5.0 138 TIE CREEK 6870 1.4 .9 156 5.8 4.4 132 ----- ----- Basin Index (%) 118 119 BELLE FOURCHE COLE CANYON 5910 1.5 .9 167 8.1 3.8 213 ----- ----- Basin Index (%) 167 213 CHEYENNE RIVER BASIN BLIND PARK 6890 2.8 1.9 147 9.1 4.6 198 NORTH RAPID CREEK 6130 3.1 1.7 182 8.6 3.9 221 ----- ----- Basin Index (%) 164 208 UPPER N. PLATTE ARAPAHO RIDGE 10960 8.0 6.1 131 8.2 7.5 109 BLACKHALL MTN 9820 9.7 -M * 10.8 -M * COLUMBINE 9160 5.7 5.0 114 8.0 7.7 104 DIVIDE PEAK 8880 5.9 5.2 113 9.0 7.3 123 JOE WRIGHT 10120 4.6 6.5 71 9.7 8.7 111 LAPRELE CREEK 8375 1.4 2.4 58 4.1 4.4 93 MED BOW 10500 8.5 -M * 10.7 -M * NORTH FRENCH CREEK 10130 8.8 7.8 113 10.5 8.4 125 NEVER SUMMER 10280 7.1 5.6 127 7.1 -M * OLD BATTLE 10000 9.2 8.5 108 10.3 11.0 94 RAWAH 9020 4.4 2.9 152 7.2 5.3 136 SAGE CREEK BASIN 7850 2.8 2.7 104 5.2 4.9 106 SAND LAKE 10050 8.4 7.8 108 8.9 8.0 111 SOUTH BRUSH CREEK 8440 4.2 3.0 140 6.3 5.2 121 TOWER 10500 12.5 12.4 101 14.1 12.6 112 WEBBER SPRINGS 9250 5.9 5.6 105 8.3 8.4 99 WILLOW CREEK PASS 9540 5.7 3.8 150 6.0 4.8 125 ZIRKEL 9340 7.1 5.2 137 10.0 9.0 111 ----- ----- Basin Index (%) 112 111 SWEETWATER DEER PARK 9700 4.7 4.4 107 5.7 6.0 95 LARSEN CREEK 9000 1.2 -M * 3.9 -M * SOUTH PASS 9040 4.6 4.2 110 4.9 5.9 83 ----- ----- Basin Index (%) 108 89 LOWER N. PLATTE CASPER MTN. 7900 6.2 3.8 163 7.0 5.7 123 LAPRELE CREEK 8375 1.4 2.4 58 4.1 4.4 93 RENO HILL 8400 6.6 4.0 165 8.6 5.3 162 WINDY PEAK 7900 1.6 1.9 84 4.6 3.8 121 ----- ----- Basin Index (%) 131 127 LARAMIE RIVER BROOKLYN LAKE 10240 5.9 4.7 126 6.9 6.3 110 CINNABAR PARK 9574 5.9 5.8 102 7.2 7.5 96 CROW CREEK 8330 1.9 2.6 73 4.6 3.8 121 DEADMAN HILL 10220 7.1 5.0 142 7.6 5.6 136 RAWAH 9020 4.4 2.9 152 7.2 5.3 136 ROACH 9700 5.6 4.4 127 7.3 6.1 120 ----- ----- Basin Index (%) 121 118 S. PLATTE BLACK MOUNTAIN 8920 3.8 -M * 5.8 -M * CROW CREEK 8330 1.9 2.6 73 4.6 3.8 121 DEADMAN HILL 10220 7.1 5.0 142 7.6 5.6 136 ----- ----- Basin Index (%) 118 130 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.6 1.9 189 6.7 5.0 134 DIVIDE PEAK 8880 5.9 5.2 113 9.0 7.3 123 ELK RIVER 8700 5.3 3.5 151 8.4 6.2 135 LITTLE SNAKE RIVER 8915 6.0 4.2 143 11.0 9.7 113 OLD BATTLE 10000 9.2 8.5 108 10.3 11.0 94 SAGE CREEK BASIN 7850 2.8 2.7 104 5.2 4.9 106 SANDSTONE RS 8150 3.5 2.5 140 7.0 5.8 121 WHISKEY PARK 8950 9.4 5.6 168 11.9 8.1 147 ----- ----- Basin Index (%) 134 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.3 3.8 87 3.8 4.4 86 BLIND BULL SUM 8650 8.4 5.9 142 7.2 6.4 112 EAST RIM DIVIDE 7930 3.3 2.2 150 4.3 3.8 113 ELKHART PARK G.S. 9400 4.7 3.7 127 5.0 4.6 109 GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.1 4.5 113 GUNSIGHT PASS 9820 5.9 3.6 164 5.7 4.5 127 KENDALL R.S. 7740 5.1 2.9 176 5.3 4.4 120 LOOMIS PARK 8240 5.0 3.6 139 6.4 5.4 119 NEW FORK LAKE 8340 3.1 2.5 124 3.8 3.6 106 POCKET CREEK 9360 4.3 -M * 3.6 -M * SNIDER BASIN 8060 3.8 2.9 131 4.4 4.4 100 SPRING CREEK DIVIDE 9000 6.9 5.8 119 7.2 7.3 99 TRIPLE PEAK 8500 6.3 5.4 117 7.8 7.5 104 ----- ----- Basin Index (%) 132 109 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.1 -M * 4.4 -M * BUCK PASTURE 9700 2.4 -M * 5.7 -M * EF BLACKS FORK GS 9360 1.6 -M * 3.9 -M * HAMS FORK 7840 1.3 2.6 50 3.7 3.6 103 HEWINTA 9519 1.5 2.1 71 4.6 4.9 94 HICKERSON PARK 9145 2.6 1.6 162 3.6 3.9 92 HOLE-IN-ROCK 9150 1.2 1.8 67 3.8 3.7 103 INDIAN CREEK 9425 5.2 6.5 80 5.6 6.6 85 KELLEY R.S. 8180 3.3 3.5 94 4.4 5.6 79 SPIRIT LK 10235 4.5 -M * 5.4 -M * STEEL CREEK PARK 10200 -M 4.4 * 5.7 5.6 102 ----- ----- Basin Index (%) 83 93 UPPER BEAR RIVER BEAR RIVER RS 8777 1.8 -M * 4.1 -M * BUG LAKE 7950 3.6 3.8 95 4.7 6.1 77 BURTS MILLER RANCH 8000 1.6 -M * 2.3 -M * CHALK CREEK #1 8993 5.9 6.4 92 7.5 8.2 91 HAYDEN FORK 9212 2.7 3.2 84 5.9 6.7 88 KELLEY R.S. 8180 3.3 3.5 94 4.4 5.6 79 LILY LAKE 9156 2.7 3.2 84 6.0 5.9 102 MONTE CRISTO 8960 4.9 6.4 77 6.1 7.9 77 SALT RIVER SUMMIT 7760 2.9 2.3 126 5.2 4.9 106 ----- ----- Basin Index (%) 90 88 ----------------------------------------------------------------------------- -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.