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 25 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 7.9 6.5 122 9.3 9.0 103 BLACK BEAR 8170 15.9 15.5 103 15.9 16.0 99 BLIND BULL SUM 8650 9.9 8.2 121 8.3 8.4 99 COTTONWOOD CREEK 7670 8.3 7.6 109 9.9 10.1 98 EAST RIM DIVIDE 7930 5.2 3.8 137 5.1 4.9 104 GRAND TARGHEE 9260 20.1 15.9 126 14.4 13.7 105 GRANITE CREEK 6770 5.9 5.3 111 7.3 8.3 88 GRASSY LAKE 7265 11.9 10.9 109 13.7 15.1 91 GROS VENTRE SUMMIT 8750 6.2 5.3 117 5.6 5.5 102 GUNSIGHT PASS 9820 7.2 5.0 144 7.0 5.7 123 LEWIS LAKE DIVIDE 7850 9.9 11.4 87 12.4 15.0 83 PHILLIPS BENCH 8200 9.4 9.5 99 10.4 11.4 91 SALT RIVER SUMMIT 7760 4.6 4.2 110 6.7 6.7 100 SNAKE RIVER STATION 6920 6.3 5.5 115 8.7 9.9 88 SPRING CREEK DIVIDE 9000 8.9 8.5 105 9.4 9.7 97 THUMB DIVIDE 7980 5.3 5.5 96 6.1 7.8 78 TOGWOTEE PASS 9580 10.9 10.1 108 10.3 10.5 98 TWO OCEAN PLATEAU 9240 13.2 11.3 117 11.1 11.5 97 WILLOW CREEK 8380 10.8 9.6 112 14.2 14.1 101 YOUNTS PEAK 8350 -M 6.2 * -M 6.9 * ----- ----- Basin Index (%) 111 96 MADISON-GALLATIN BLACK BEAR 8170 15.9 15.5 103 15.9 16.0 99 CANYON 7870 4.9 4.8 102 6.4 7.1 90 MADISON PLATEAU 7750 8.5 9.3 91 9.8 10.9 90 WEST YELLOWSTONE 6700 4.6 4.0 115 5.6 6.2 90 WHISKEY CREEK 6800 5.9 5.8 102 7.8 8.8 89 ----- ----- Basin Index (%) 101 93 YELLOWSTONE BEARTOOTH LAKE 9360 10.0 9.0 111 8.4 8.2 102 BURNT MTN 5880 3.8 1.9 200 9.5 6.4 148 CANYON 7870 4.9 4.8 102 6.4 7.1 90 COLE CREEK 7850 8.2 5.9 139 6.2 6.2 100 EVENING STAR 9200 13.5 10.1 134 14.2 12.0 118 FISHER CREEK 9100 14.7 13.6 108 13.2 13.6 97 NORTHEAST ENTRANCE 7350 4.1 3.2 128 5.0 5.7 88 PARKER PEAK 9400 11.5 8.8 131 10.9 7.8 140 SYLVAN LAKE 8420 9.2 8.4 110 11.1 10.3 108 THUMB DIVIDE 7980 5.3 5.5 96 6.1 7.8 78 TWO OCEAN PLATEAU 9240 13.2 11.3 117 11.1 11.5 97 WHITE MILL 8700 11.0 8.9 124 9.4 10.3 91 WOLVERINE 7650 5.6 4.2 133 5.2 5.7 91 ----- ----- Basin Index (%) 120 104 WIND RIVER BURROUGHS CREEK 8750 -M 5.6 * -M 7.0 * CASTLE CREEK 8400 2.9 -M * 4.5 -M * COLD SPRINGS 9630 4.5 3.0 150 6.2 4.6 135 DEER PARK 9700 5.1 5.7 89 6.6 7.8 85 HOBBS PARK 10100 6.1 6.1 100 5.6 5.8 97 KIRWIN 9550 6.9 4.2 164 5.9 5.2 113 LITTLE WARM 9370 5.6 4.1 137 6.7 5.7 118 OWL CREEK 8975 3.3 2.3 143 3.2 2.7 119 SOUTH PASS 9040 5.5 5.8 95 5.6 7.6 74 ST. LAWRENCE ALT 8620 2.3 2.8 82 4.5 4.1 110 TOGWOTEE PASS 9580 10.9 10.1 108 10.3 10.5 98 TOWNSEND CREEK 8700 2.6 3.6 72 3.7 5.5 67 ----- ----- Basin Index (%) 111 98 BIGHORN BASIN BALD MTN. 9380 10.6 7.5 141 8.6 7.3 118 BEAR TRAP MEADOW 8200 4.3 2.4 179 5.2 4.0 130 BONE SPRINGS DIV 9350 7.8 6.9 113 6.2 6.6 94 GRAVE SPRINGS 8550 4.7 3.0 157 5.9 4.7 126 KIRWIN 9550 6.9 4.2 164 5.9 5.2 113 MARQUETTE 8760 4.2 -M * 5.8 -M * MIDDLE POWDER 7760 6.6 4.6 143 6.4 5.8 110 OWL CREEK 8975 3.3 2.3 143 3.2 2.7 119 POWDER RIVER PASS 9480 5.7 4.2 136 5.9 5.5 107 SHELL CREEK 9580 7.3 6.8 107 6.1 6.1 100 TIMBER CREEK 7950 3.3 2.0 165 4.8 3.8 126 ----- ----- Basin Index (%) 138 113 SHOSHONE RIVER BLACKWATER 9780 11.9 9.7 123 9.6 9.2 104 EVENING STAR 9200 13.5 10.1 134 14.2 12.0 118 MARQUETTE 8760 4.2 -M * 5.8 -M * SYLVAN ROAD 7120 5.6 4.8 117 9.0 8.3 108 YOUNTS PEAK 8350 -M 6.2 * -M 6.9 * ----- ----- Basin Index (%) 126 111 POWDER RIVER BEAR TRAP MEADOW 8200 4.3 2.4 179 5.2 4.0 130 CLOUD PEAK RESERVOIR 9860 7.2 5.6 129 7.5 5.9 127 GRAVE SPRINGS 8550 4.7 3.0 157 5.9 4.7 126 HANSEN SAWMILL 8360 3.7 2.7 137 5.5 3.8 145 MIDDLE POWDER 7760 6.6 4.6 143 6.4 5.8 110 POWDER RIVER PASS 9480 5.7 4.2 136 5.9 5.5 107 SOLDIER PARK 8720 3.3 -M * 5.3 -M * ----- ----- Basin Index (%) 143 123 TONGUE RIVER BIG GOOSE 7990 4.1 3.4 121 6.3 5.1 124 BONE SPRINGS DIV 9350 7.8 6.9 113 6.2 6.6 94 BURGESS JUNCTION 7880 5.4 4.3 126 6.7 5.6 120 DOME LAKE 8880 3.2 4.9 65 5.1 6.4 80 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 7.1 4.7 151 7.9 6.4 123 TIE CREEK 6870 2.4 1.6 150 6.7 5.3 126 ----- ----- Basin Index (%) 116 110 BELLE FOURCHE COLE CANYON 5910 2.9 1.5 193 9.1 4.4 207 ----- ----- Basin Index (%) 193 207 CHEYENNE RIVER BASIN BLIND PARK 6890 4.1 2.7 152 10.1 5.6 180 NORTH RAPID CREEK 6130 4.2 2.8 150 9.7 4.7 206 ----- ----- Basin Index (%) 151 192 UPPER N. PLATTE ARAPAHO RIDGE 10960 9.7 8.7 111 9.7 10.0 97 BLACKHALL MTN 9820 12.7 -M * 14.4 -M * COLUMBINE 9160 9.1 8.0 114 11.6 10.7 108 DIVIDE PEAK 8880 7.5 7.5 100 11.0 9.5 116 JOE WRIGHT 10120 6.6 8.9 74 11.3 11.4 99 LAPRELE CREEK 8375 2.7 3.6 75 5.0 5.6 89 MED BOW 10500 11.7 -M * 14.4 -M * NORTH FRENCH CREEK 10130 12.7 10.6 120 14.2 11.1 128 NEVER SUMMER 10280 8.7 8.0 109 8.0 -M * OLD BATTLE 10000 12.7 11.7 109 14.5 14.9 97 RAWAH 9020 5.3 3.9 136 8.0 6.8 118 SAGE CREEK BASIN 7850 4.4 5.1 86 6.4 6.6 97 SAND LAKE 10050 11.8 10.5 112 11.9 10.4 114 SOUTH BRUSH CREEK 8440 5.7 4.3 133 8.1 6.7 121 TOWER 10500 16.7 18.2 92 18.4 16.9 109 WEBBER SPRINGS 9250 8.6 8.8 98 11.1 11.4 97 WILLOW CREEK PASS 9540 6.3 5.1 124 7.0 6.1 115 ZIRKEL 9340 10.7 8.6 124 13.6 12.4 110 ----- ----- Basin Index (%) 106 108 SWEETWATER DEER PARK 9700 5.1 5.7 89 6.6 7.8 85 LARSEN CREEK 9000 2.0 -M * 5.0 -M * SOUTH PASS 9040 5.5 5.8 95 5.6 7.6 74 ----- ----- Basin Index (%) 92 79 LOWER N. PLATTE CASPER MTN. 7900 8.2 5.4 152 8.6 7.0 123 LAPRELE CREEK 8375 2.7 3.6 75 5.0 5.6 89 RENO HILL 8400 8.3 5.4 154 10.3 6.6 156 WINDY PEAK 7900 2.6 2.9 90 5.2 4.8 108 ----- ----- Basin Index (%) 126 121 LARAMIE RIVER BROOKLYN LAKE 10240 8.5 7.3 116 9.2 8.5 108 CINNABAR PARK 9574 8.5 7.8 109 10.5 10.3 102 CROW CREEK 8330 2.6 3.9 67 5.1 5.1 100 DEADMAN HILL 10220 8.7 6.8 128 9.2 7.3 126 RAWAH 9020 5.3 3.9 136 8.0 6.8 118 ROACH 9700 6.8 6.4 106 9.1 8.3 110 ----- ----- Basin Index (%) 112 110 S. PLATTE BLACK MOUNTAIN 8920 4.7 -M * 6.2 -M * CROW CREEK 8330 2.6 3.9 67 5.1 5.1 100 DEADMAN HILL 10220 8.7 6.8 128 9.2 7.3 126 ----- ----- Basin Index (%) 106 115 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 3.4 150 8.8 6.5 135 DIVIDE PEAK 8880 7.5 7.5 100 11.0 9.5 116 ELK RIVER 8700 7.7 5.9 131 10.3 8.3 124 LITTLE SNAKE RIVER 8915 9.6 7.7 125 14.9 13.5 110 OLD BATTLE 10000 12.7 11.7 109 14.5 14.9 97 SAGE CREEK BASIN 7850 4.4 5.1 86 6.4 6.6 97 SANDSTONE RS 8150 4.8 4.1 117 8.8 7.9 111 WHISKEY PARK 8950 13.3 8.6 155 15.7 11.0 143 ----- ----- Basin Index (%) 121 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.6 5.1 90 4.6 5.7 81 BLIND BULL SUM 8650 9.9 8.2 121 8.3 8.4 99 EAST RIM DIVIDE 7930 5.2 3.8 137 5.1 4.9 104 ELKHART PARK G.S. 9400 5.8 4.9 118 5.8 5.8 100 GROS VENTRE SUMMIT 8750 6.2 5.3 117 5.6 5.5 102 GUNSIGHT PASS 9820 7.2 5.0 144 7.0 5.7 123 KENDALL R.S. 7740 5.6 4.3 130 6.5 5.8 112 LOOMIS PARK 8240 6.0 5.6 107 7.4 7.2 103 NEW FORK LAKE 8340 4.3 4.0 108 4.3 4.6 93 POCKET CREEK 9360 4.7 -M * 4.4 -M * SNIDER BASIN 8060 4.9 4.6 107 5.5 5.9 93 SPRING CREEK DIVIDE 9000 8.9 8.5 105 9.4 9.7 97 TRIPLE PEAK 8500 8.0 7.6 105 9.8 9.9 99 ----- ----- Basin Index (%) 114 100 LOWER GREEN RIVER BLACKS FORK JCT 8870 2.0 -M * 5.1 -M * BUCK PASTURE 9700 3.9 -M * 6.7 -M * EF BLACKS FORK GS 9360 1.8 -M * 4.4 -M * HAMS FORK 7840 2.8 4.0 70 4.8 4.7 102 HEWINTA 9519 2.2 3.3 67 5.3 6.1 87 HICKERSON PARK 9145 3.5 2.4 146 5.0 4.7 106 HOLE-IN-ROCK 9150 2.7 2.8 96 4.7 4.4 107 INDIAN CREEK 9425 7.6 9.5 80 7.6 8.8 86 KELLEY R.S. 8180 5.0 5.6 89 6.6 7.5 88 SPIRIT LK 10235 4.7 -M * 7.3 -M * STEEL CREEK PARK 10200 5.1 5.8 88 6.7 7.0 96 ----- ----- Basin Index (%) 87 94 UPPER BEAR RIVER BEAR RIVER RS 8777 2.7 -M * 5.3 -M * BUG LAKE 7950 5.1 5.8 88 6.4 8.2 78 BURTS MILLER RANCH 8000 2.6 -M * 3.1 -M * CHALK CREEK #1 8993 8.1 9.4 86 9.5 10.7 89 HAYDEN FORK 9212 4.2 4.8 88 7.6 8.8 86 KELLEY R.S. 8180 5.0 5.6 89 6.6 7.5 88 LILY LAKE 9156 4.2 4.7 89 7.0 7.5 93 MONTE CRISTO 8960 7.8 9.1 86 8.3 10.7 78 SALT RIVER SUMMIT 7760 4.6 4.2 110 6.7 6.7 100 ----- ----- Basin Index (%) 89 87 ----------------------------------------------------------------------------- -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.