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 SUNDAY: DECEMBER 22 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 7.3 6.0 122 8.5 8.7 98 BLACK BEAR 8170 14.4 14.7 98 14.5 15.6 93 BLIND BULL SUM 8650 9.0 7.9 114 7.8 8.1 96 COTTONWOOD CREEK 7670 7.3 7.2 101 8.7 9.7 90 EAST RIM DIVIDE 7930 4.8 3.6 133 4.8 4.8 100 GRAND TARGHEE 9260 17.6 14.8 119 13.1 13.0 101 GRANITE CREEK 6770 5.5 4.9 112 7.0 8.0 88 GRASSY LAKE 7265 10.1 10.4 97 12.1 14.4 84 GROS VENTRE SUMMIT 8750 5.9 5.0 118 5.5 5.4 102 GUNSIGHT PASS 9820 6.6 4.5 147 6.6 5.5 120 LEWIS LAKE DIVIDE 7850 8.9 10.7 83 11.3 14.5 78 PHILLIPS BENCH 8200 8.3 8.9 93 9.4 10.9 86 SALT RIVER SUMMIT 7760 4.0 3.9 103 6.0 6.5 92 SNAKE RIVER STATION 6920 5.6 5.3 106 7.8 9.5 82 SPRING CREEK DIVIDE 9000 7.8 8.2 95 8.3 9.4 88 THUMB DIVIDE 7980 4.7 5.2 90 5.6 7.6 74 TOGWOTEE PASS 9580 9.8 9.7 101 9.3 10.1 92 TWO OCEAN PLATEAU 9240 12.4 10.9 114 10.4 11.2 93 WILLOW CREEK 8380 9.5 9.2 103 13.0 13.6 96 YOUNTS PEAK 8350 -M 5.9 * -M 6.7 * ----- ----- Basin Index (%) 106 91 MADISON-GALLATIN BLACK BEAR 8170 14.4 14.7 98 14.5 15.6 93 CANYON 7870 4.3 4.5 96 5.8 6.8 85 MADISON PLATEAU 7750 7.7 8.9 87 9.1 10.6 86 WEST YELLOWSTONE 6700 4.2 3.8 111 5.2 6.0 87 WHISKEY CREEK 6800 5.3 5.6 95 7.1 8.5 84 ----- ----- Basin Index (%) 96 88 YELLOWSTONE BEARTOOTH LAKE 9360 8.8 8.7 101 7.3 8.0 91 BURNT MTN 5880 3.6 1.8 200 9.4 6.2 152 CANYON 7870 4.3 4.5 96 5.8 6.8 85 COLE CREEK 7850 7.5 5.7 132 5.8 6.0 97 EVENING STAR 9200 12.1 9.6 126 12.6 11.6 109 FISHER CREEK 9100 13.2 13.1 101 11.9 13.1 91 NORTHEAST ENTRANCE 7350 3.4 2.9 117 4.4 5.5 80 PARKER PEAK 9400 10.3 8.5 121 9.7 7.6 128 SYLVAN LAKE 8420 8.1 8.0 101 10.0 9.9 101 THUMB DIVIDE 7980 4.7 5.2 90 5.6 7.6 74 TWO OCEAN PLATEAU 9240 12.4 10.9 114 10.4 11.2 93 WHITE MILL 8700 9.9 8.7 114 8.4 9.9 85 WOLVERINE 7650 4.5 3.9 115 4.5 5.6 80 ----- ----- Basin Index (%) 112 97 WIND RIVER BURROUGHS CREEK 8750 -M 5.3 * -M 6.8 * CASTLE CREEK 8400 2.7 -M * 4.3 -M * COLD SPRINGS 9630 4.3 2.9 148 5.9 4.5 131 DEER PARK 9700 4.8 5.2 92 6.3 7.6 83 HOBBS PARK 10100 5.9 6.0 98 5.4 5.6 96 KIRWIN 9550 6.5 4.1 159 5.4 5.0 108 LITTLE WARM 9370 5.2 3.9 133 6.5 5.5 118 OWL CREEK 8975 3.1 2.3 135 3.1 2.6 119 SOUTH PASS 9040 5.1 5.6 91 5.4 7.4 73 ST. LAWRENCE ALT 8620 2.2 2.6 85 4.4 4.0 110 TOGWOTEE PASS 9580 9.8 9.7 101 9.3 10.1 92 TOWNSEND CREEK 8700 2.5 3.4 74 3.6 5.3 68 ----- ----- Basin Index (%) 108 96 BIGHORN BASIN BALD MTN. 9380 9.6 7.3 132 7.8 7.0 111 BEAR TRAP MEADOW 8200 3.9 2.3 170 5.0 3.9 128 BONE SPRINGS DIV 9350 7.2 6.6 109 5.7 6.4 89 GRAVE SPRINGS 8550 4.3 2.8 154 5.5 4.6 120 KIRWIN 9550 6.5 4.1 159 5.4 5.0 108 MARQUETTE 8760 4.3 -M * 5.6 -M * MIDDLE POWDER 7760 5.9 4.3 137 6.0 5.6 107 OWL CREEK 8975 3.1 2.3 135 3.1 2.6 119 POWDER RIVER PASS 9480 5.4 4.0 135 5.5 5.3 104 SHELL CREEK 9580 6.7 6.5 103 5.7 5.9 97 TIMBER CREEK 7950 3.2 1.9 168 4.7 3.7 127 ----- ----- Basin Index (%) 133 109 SHOSHONE RIVER BLACKWATER 9780 11.3 9.3 122 9.0 9.0 100 EVENING STAR 9200 12.1 9.6 126 12.6 11.6 109 MARQUETTE 8760 4.3 -M * 5.6 -M * SYLVAN ROAD 7120 5.0 4.5 111 8.4 8.1 104 YOUNTS PEAK 8350 -M 5.9 * -M 6.7 * ----- ----- Basin Index (%) 121 105 POWDER RIVER BEAR TRAP MEADOW 8200 3.9 2.3 170 5.0 3.9 128 CLOUD PEAK RESERVOIR 9860 6.5 5.3 123 6.7 5.8 116 GRAVE SPRINGS 8550 4.3 2.8 154 5.5 4.6 120 HANSEN SAWMILL 8360 3.6 2.6 138 5.3 3.7 143 MIDDLE POWDER 7760 5.9 4.3 137 6.0 5.6 107 POWDER RIVER PASS 9480 5.4 4.0 135 5.5 5.3 104 SOLDIER PARK 8720 2.9 -M * 5.1 -M * ----- ----- Basin Index (%) 139 118 TONGUE RIVER BIG GOOSE 7990 3.7 3.2 116 6.2 4.9 127 BONE SPRINGS DIV 9350 7.2 6.6 109 5.7 6.4 89 BURGESS JUNCTION 7880 4.9 4.1 120 6.4 5.4 119 DOME LAKE 8880 2.7 4.7 57 4.9 6.2 79 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 6.4 4.4 145 7.5 6.1 123 TIE CREEK 6870 2.0 1.4 143 6.3 5.1 124 ----- ----- Basin Index (%) 110 109 BELLE FOURCHE COLE CANYON 5910 2.5 1.1 227 8.9 4.2 212 ----- ----- Basin Index (%) 227 212 CHEYENNE RIVER BASIN BLIND PARK 6890 3.7 2.4 154 9.7 5.3 183 NORTH RAPID CREEK 6130 3.9 2.5 156 9.3 4.5 207 ----- ----- Basin Index (%) 155 194 UPPER N. PLATTE ARAPAHO RIDGE 10960 8.7 8.3 105 8.9 9.7 92 BLACKHALL MTN 9820 11.4 -M * 12.6 -M * COLUMBINE 9160 6.9 7.7 90 9.6 10.2 94 DIVIDE PEAK 8880 6.7 7.1 94 10.2 9.2 111 JOE WRIGHT 10120 6.1 8.6 71 10.4 10.9 95 LAPRELE CREEK 8375 2.3 3.3 70 4.6 5.3 87 MED BOW 10500 9.5 -M * 12.3 -M * NORTH FRENCH CREEK 10130 10.1 10.3 98 11.8 10.7 110 NEVER SUMMER 10280 8.3 7.5 111 7.7 -M * OLD BATTLE 10000 10.9 11.2 97 12.8 14.4 89 RAWAH 9020 5.0 3.8 132 7.8 6.7 116 SAGE CREEK BASIN 7850 3.9 4.7 83 6.0 6.3 95 SAND LAKE 10050 9.9 10.0 99 10.3 10.0 103 SOUTH BRUSH CREEK 8440 4.9 4.2 117 7.4 6.5 114 TOWER 10500 14.2 17.7 80 16.4 16.4 100 WEBBER SPRINGS 9250 7.2 8.4 86 9.7 11.0 88 WILLOW CREEK PASS 9540 6.2 4.9 127 7.0 5.8 121 ZIRKEL 9340 8.3 8.1 102 11.6 12.0 97 ----- ----- Basin Index (%) 95 100 SWEETWATER DEER PARK 9700 4.8 5.2 92 6.3 7.6 83 LARSEN CREEK 9000 1.7 -M * 4.8 -M * SOUTH PASS 9040 5.1 5.6 91 5.4 7.4 73 ----- ----- Basin Index (%) 92 78 LOWER N. PLATTE CASPER MTN. 7900 7.7 5.2 148 8.2 6.8 121 LAPRELE CREEK 8375 2.3 3.3 70 4.6 5.3 87 RENO HILL 8400 7.9 5.2 152 9.8 6.4 153 WINDY PEAK 7900 2.2 2.8 79 4.9 4.7 104 ----- ----- Basin Index (%) 122 119 LARAMIE RIVER BROOKLYN LAKE 10240 7.1 7.1 100 7.7 8.2 94 CINNABAR PARK 9574 7.0 7.6 92 8.7 10.0 87 CROW CREEK 8330 2.1 3.9 54 4.7 4.9 96 DEADMAN HILL 10220 8.0 6.4 125 8.3 7.0 119 RAWAH 9020 5.0 3.8 132 7.8 6.7 116 ROACH 9700 6.1 5.9 103 8.3 7.9 105 ----- ----- Basin Index (%) 102 102 S. PLATTE BLACK MOUNTAIN 8920 4.2 -M * 5.5 -M * CROW CREEK 8330 2.1 3.9 54 4.7 4.9 96 DEADMAN HILL 10220 8.0 6.4 125 8.3 7.0 119 ----- ----- Basin Index (%) 98 109 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.6 3.2 144 8.3 6.3 132 DIVIDE PEAK 8880 6.7 7.1 94 10.2 9.2 111 ELK RIVER 8700 6.4 5.6 114 8.8 8.0 110 LITTLE SNAKE RIVER 8915 7.9 7.0 113 13.1 12.9 102 OLD BATTLE 10000 10.9 11.2 97 12.8 14.4 89 SAGE CREEK BASIN 7850 3.9 4.7 83 6.0 6.3 95 SANDSTONE RS 8150 4.2 3.9 108 8.1 7.6 107 WHISKEY PARK 8950 10.8 8.2 132 13.5 10.6 127 ----- ----- Basin Index (%) 109 107 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 4.8 88 4.4 5.5 80 BLIND BULL SUM 8650 9.0 7.9 114 7.8 8.1 96 EAST RIM DIVIDE 7930 4.8 3.6 133 4.8 4.8 100 ELKHART PARK G.S. 9400 5.5 4.6 120 5.7 5.6 102 GROS VENTRE SUMMIT 8750 5.9 5.0 118 5.5 5.4 102 GUNSIGHT PASS 9820 6.6 4.5 147 6.6 5.5 120 KENDALL R.S. 7740 5.2 4.1 127 6.2 5.6 111 LOOMIS PARK 8240 5.6 5.2 108 6.9 6.9 100 NEW FORK LAKE 8340 4.1 3.7 111 4.3 4.5 96 POCKET CREEK 9360 4.4 -M * 4.2 -M * SNIDER BASIN 8060 4.3 4.4 98 5.2 5.7 91 SPRING CREEK DIVIDE 9000 7.8 8.2 95 8.3 9.4 88 TRIPLE PEAK 8500 7.0 7.3 96 8.7 9.6 91 ----- ----- Basin Index (%) 111 97 LOWER GREEN RIVER BLACKS FORK JCT 8870 2.1 -M * 5.0 -M * BUCK PASTURE 9700 3.8 -M * 6.4 -M * EF BLACKS FORK GS 9360 1.7 -M * 4.3 -M * HAMS FORK 7840 2.4 3.7 65 4.5 4.5 100 HEWINTA 9519 2.1 3.2 66 5.2 5.9 88 HICKERSON PARK 9145 3.5 2.2 159 5.0 4.6 109 HOLE-IN-ROCK 9150 2.7 2.5 108 4.6 4.2 110 INDIAN CREEK 9425 6.7 8.9 75 7.0 8.6 81 KELLEY R.S. 8180 4.4 5.1 86 6.1 7.3 84 SPIRIT LK 10235 4.6 -M * 7.1 -M * STEEL CREEK PARK 10200 5.2 5.7 91 6.5 6.8 96 ----- ----- Basin Index (%) 86 93 UPPER BEAR RIVER BEAR RIVER RS 8777 2.7 -M * 5.2 -M * BUG LAKE 7950 4.1 5.5 75 6.1 7.9 77 BURTS MILLER RANCH 8000 2.6 -M * 3.2 -M * CHALK CREEK #1 8993 7.7 9.1 85 9.0 10.3 87 HAYDEN FORK 9212 3.8 4.6 83 7.2 8.4 86 KELLEY R.S. 8180 4.4 5.1 86 6.1 7.3 84 LILY LAKE 9156 3.9 4.6 85 6.8 7.3 93 MONTE CRISTO 8960 6.9 8.8 78 7.7 10.2 75 SALT RIVER SUMMIT 7760 4.0 3.9 103 6.0 6.5 92 ----- ----- Basin Index (%) 84 84 ----------------------------------------------------------------------------- -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.