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: NOVEMBER 20 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 3.7 2.1 176 4.8 4.5 107 BLACK BEAR 8170 9.0 6.7 134 9.4 7.9 119 BLIND BULL SUM 8650 4.8 3.6 133 4.3 4.2 102 COTTONWOOD CREEK 7670 4.2 2.8 150 5.6 5.2 108 EAST RIM DIVIDE 7930 1.8 1.4 129 2.9 2.7 107 GRAND TARGHEE 9260 11.9 8.6 138 9.3 8.9 104 GRANITE CREEK 6770 2.4 1.5 160 4.0 4.0 100 GRASSY LAKE 7265 5.9 4.3 137 7.9 7.2 110 GROS VENTRE SUMMIT 8750 3.9 2.9 134 3.9 3.3 118 GUNSIGHT PASS 9820 4.0 2.5 160 4.1 3.5 117 LEWIS LAKE DIVIDE 7850 5.2 4.7 111 7.0 7.2 97 PHILLIPS BENCH 8200 5.0 3.6 139 6.1 5.4 113 SALT RIVER SUMMIT 7760 1.9 1.2 158* 3.9 3.3 118 SNAKE RIVER STATION 6920 3.4 1.6 212 5.0 4.9 102 SPRING CREEK DIVIDE 9000 3.8 3.6 106 4.5 4.9 92 THUMB DIVIDE 7980 2.6 2.1 124 3.7 4.2 88 TOGWOTEE PASS 9580 6.9 5.2 133 6.1 5.6 109 TWO OCEAN PLATEAU 9240 8.0 6.4 125 6.4 6.2 103 WILLOW CREEK 8380 5.3 3.8 139 8.6 7.2 119 YOUNTS PEAK 8350 -M 3.1 * -M 4.0 * ----- ----- Basin Index (%) 137 107 MADISON-GALLATIN BLACK BEAR 8170 9.0 6.7 134 9.4 7.9 119 CANYON 7870 2.2 1.9 116 3.8 3.7 103 MADISON PLATEAU 7750 3.8 3.5 109 5.6 5.3 106 WEST YELLOWSTONE 6700 2.0 1.2 167 3.0 3.2 94 WHISKEY CREEK 6800 2.6 2.0 130 3.9 4.3 91 ----- ----- Basin Index (%) 128 105 YELLOWSTONE BEARTOOTH LAKE 9360 5.3 4.9 108 4.2 4.3 98 BURNT MTN 5880 1.4 .6 233 6.3 4.5 140 CANYON 7870 2.2 1.9 116 3.8 3.7 103 COLE CREEK 7850 4.9 3.4 144 4.3 4.3 100 EVENING STAR 9200 8.0 5.3 151 7.8 6.4 122 FISHER CREEK 9100 8.0 6.3 127 6.9 7.0 99 NORTHEAST ENTRANCE 7350 1.1 1.0 110 2.2 3.3 67 PARKER PEAK 9400 6.8 4.7 145 6.1 4.5 136 SYLVAN LAKE 8420 4.6 3.8 121 6.3 5.6 112 THUMB DIVIDE 7980 2.6 2.1 124 3.7 4.2 88 TWO OCEAN PLATEAU 9240 8.0 6.4 125 6.4 6.2 103 WHITE MILL 8700 5.8 4.5 129 4.9 5.5 89 WOLVERINE 7650 1.4 1.1 127 2.7 3.2 84 ----- ----- Basin Index (%) 131 105 WIND RIVER BURROUGHS CREEK 8750 -M 2.8 * -M 3.8 * CASTLE CREEK 8400 .6 -M * 2.6 -M * COLD SPRINGS 9630 3.0 1.8 167 4.6 3.0 153 DEER PARK 9700 3.7 3.3 112 4.4 4.7 94 HOBBS PARK 10100 4.5 3.7 122 4.5 3.7 122 KIRWIN 9550 4.4 2.8 157 3.6 3.3 109 LITTLE WARM 9370 3.5 2.2 159 4.6 3.3 139 OWL CREEK 8975 2.1 1.4 150 2.4 1.9 126 SOUTH PASS 9040 3.3 3.0 110 3.9 4.2 93 ST. LAWRENCE ALT 8620 1.6 1.5 107 3.9 2.7 144 TOGWOTEE PASS 9580 6.9 5.2 133 6.1 5.6 109 TOWNSEND CREEK 8700 1.8 1.9 95 3.2 3.5 91 ----- ----- Basin Index (%) 130 115 BIGHORN BASIN BALD MTN. 9380 6.9 4.6 150 5.6 4.4 127 BEAR TRAP MEADOW 8200 3.0 1.1 273 4.2 2.7 156 BONE SPRINGS DIV 9350 4.7 4.2 112 4.1 4.2 98 GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150 KIRWIN 9550 4.4 2.8 157 3.6 3.3 109 MARQUETTE 8760 3.6 -M * 4.7 -M * MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145 OWL CREEK 8975 2.1 1.4 150 2.4 1.9 126 POWDER RIVER PASS 9480 4.2 2.2 191 4.5 3.4 132 SHELL CREEK 9580 5.0 4.0 125 4.1 3.8 108 TIMBER CREEK 7950 2.2 1.4 157 3.9 2.9 134 ----- ----- Basin Index (%) 166 127 SHOSHONE RIVER BLACKWATER 9780 7.8 5.1 153 5.5 5.1 108 EVENING STAR 9200 8.0 5.3 151 7.8 6.4 122 MARQUETTE 8760 3.6 -M * 4.7 -M * SYLVAN ROAD 7120 2.4 1.6 150 5.0 4.4 114 YOUNTS PEAK 8350 -M 3.1 * -M 4.0 * ----- ----- Basin Index (%) 152 115 POWDER RIVER BEAR TRAP MEADOW 8200 3.0 1.1 273 4.2 2.7 156 CLOUD PEAK RESERVOIR 9860 4.4 3.2 138 5.7 4.1 139 GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150 HANSEN SAWMILL 8360 3.0 1.1 273 4.3 2.7 159 MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145 POWDER RIVER PASS 9480 4.2 2.2 191 4.5 3.4 132 SOLDIER PARK 8720 2.5 -M * 4.3 -M * ----- ----- Basin Index (%) 216 146 TONGUE RIVER BIG GOOSE 7990 2.7 1.8 150 5.0 3.5 143 BONE SPRINGS DIV 9350 4.7 4.2 112 4.1 4.2 98 BURGESS JUNCTION 7880 3.4 2.5 136 5.1 3.6 142 DOME LAKE 8880 1.8 3.0 60 4.1 4.1 100 LITTLE GOOSE 8870 3.4 -M * 6.0 -M * SUCKER CREEK 8880 4.9 2.7 181 6.0 4.1 146 TIE CREEK 6870 1.2 .6 200 5.1 3.7 138 ----- ----- Basin Index (%) 126 127 BELLE FOURCHE COLE CANYON 5910 1.5 .5 300* 7.7 3.0 257 ----- ----- Basin Index (%) 300* 257 CHEYENNE RIVER BASIN BLIND PARK 6890 2.6 1.3 200 8.4 3.8 221 NORTH RAPID CREEK 6130 3.3 1.0 330 8.3 3.3 252 ----- ----- Basin Index (%) 257 235 UPPER N. PLATTE ARAPAHO RIDGE 10960 6.2 4.7 132 6.5 5.7 114 BLACKHALL MTN 9820 8.1 -M * 9.3 -M * COLUMBINE 9160 4.8 3.2 150 7.4 5.4 137 DIVIDE PEAK 8880 4.7 3.4 138 7.8 5.3 147 JOE WRIGHT 10120 3.2 4.8 67 8.0 6.5 123 LAPRELE CREEK 8375 1.1 1.9 58 3.3 3.4 97 MED BOW 10500 7.8 -M * 9.5 -M * NORTH FRENCH CREEK 10130 7.6 4.9 155 9.4 6.0 157 NEVER SUMMER 10280 5.7 4.2 136 5.7 -M * OLD BATTLE 10000 8.0 5.9 136 9.5 7.8 122 RAWAH 9020 3.3 1.8 183 6.3 4.1 154 SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131 SAND LAKE 10050 7.4 5.4 137 7.9 5.8 136 SOUTH BRUSH CREEK 8440 3.3 1.8 183 5.8 3.9 149 TOWER 10500 10.8 8.7 124 12.7 8.9 143 WEBBER SPRINGS 9250 4.8 3.5 137 7.1 6.0 118 WILLOW CREEK PASS 9540 4.2 2.8 150 4.7 3.6 131 ZIRKEL 9340 4.9 3.4 144 7.9 6.8 116 ----- ----- Basin Index (%) 132 132 SWEETWATER DEER PARK 9700 3.7 3.3 112 4.4 4.7 94 LARSEN CREEK 9000 .6 -M * 3.2 -M * SOUTH PASS 9040 3.3 3.0 110 3.9 4.2 93 ----- ----- Basin Index (%) 111 93 LOWER N. PLATTE CASPER MTN. 7900 6.6 2.8 236 6.9 4.5 153 LAPRELE CREEK 8375 1.1 1.9 58 3.3 3.4 97 RENO HILL 8400 6.2 2.6 238 8.1 4.2 193 WINDY PEAK 7900 1.0 1.4 71 3.5 3.0 117 ----- ----- Basin Index (%) 171 144 LARAMIE RIVER BROOKLYN LAKE 10240 4.3 3.5 123 5.1 4.5 113 CINNABAR PARK 9574 4.6 3.8 121 6.1 5.2 117 CROW CREEK 8330 1.2 1.2 100 3.8 2.9 131 DEADMAN HILL 10220 5.9 3.7 159 6.5 4.3 151 RAWAH 9020 3.3 1.8 183 6.3 4.1 154 ROACH 9700 4.2 2.9 145 6.2 4.5 138 ----- ----- Basin Index (%) 139 133 S. PLATTE BLACK MOUNTAIN 8920 3.0 -M * 4.3 -M * CROW CREEK 8330 1.2 1.2 100 3.8 2.9 131 DEADMAN HILL 10220 5.9 3.7 159 6.5 4.3 151 ----- ----- Basin Index (%) 145 143 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.6 .9 289* 5.9 3.7 159 DIVIDE PEAK 8880 4.7 3.4 138 7.8 5.3 147 ELK RIVER 8700 3.9 1.9 205* 6.7 4.5 149 LITTLE SNAKE RIVER 8915 5.1 3.0 170 9.6 7.0 137 OLD BATTLE 10000 8.0 5.9 136 9.5 7.8 122 SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131 SANDSTONE RS 8150 2.8 1.2 233* 6.1 4.3 142 WHISKEY PARK 8950 7.9 3.6 219 10.7 5.7 188 ----- ----- Basin Index (%) 171 146 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 3.0 97 2.9 3.2 91 BLIND BULL SUM 8650 4.8 3.6 133 4.3 4.2 102 EAST RIM DIVIDE 7930 1.8 1.4 129 2.9 2.7 107 ELKHART PARK G.S. 9400 2.6 2.5 104 3.1 3.4 91 GROS VENTRE SUMMIT 8750 3.9 2.9 134 3.9 3.3 118 GUNSIGHT PASS 9820 4.0 2.5 160 4.1 3.5 117 KENDALL R.S. 7740 1.8 1.8 100 3.1 3.1 100 LOOMIS PARK 8240 3.1 2.1 148 4.3 3.7 116 NEW FORK LAKE 8340 1.4 1.7 82 2.0 2.7 74 POCKET CREEK 9360 3.9 -M * 3.2 -M * SNIDER BASIN 8060 2.0 1.7 118 2.8 3.0 93 SPRING CREEK DIVIDE 9000 3.8 3.6 106 4.5 4.9 92 TRIPLE PEAK 8500 3.8 3.6 106 5.2 5.1 102 ----- ----- Basin Index (%) 118 101 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 3.4 -M * BUCK PASTURE 9700 2.1 -M * 4.4 -M * EF BLACKS FORK GS 9360 1.7 -M * 3.5 -M * HAMS FORK 7840 .7 1.4 50 3.1 2.7 115 HEWINTA 9519 .7 1.3 54 3.8 3.6 106 HICKERSON PARK 9145 2.0 1.3 154 3.4 3.2 106 HOLE-IN-ROCK 9150 1.1 1.1 100 3.0 3.0 100 INDIAN CREEK 9425 3.3 4.4 75 4.1 4.6 89 KELLEY R.S. 8180 2.4 2.2 109 3.9 3.8 103 SPIRIT LK 10235 2.3 -M * 4.3 -M * STEEL CREEK PARK 10200 .7 3.1 23 4.5 4.2 107 ----- ----- Basin Index (%) 74 103 UPPER BEAR RIVER BEAR RIVER RS 8777 .9 -M * 3.4 -M * BUG LAKE 7950 1.7 2.4 71 3.5 4.2 83 BURTS MILLER RANCH 8000 .7 -M * 1.8 -M * CHALK CREEK #1 8993 4.3 3.7 116 5.5 5.8 95 HAYDEN FORK 9212 1.4 2.1 67 4.7 4.8 98 KELLEY R.S. 8180 2.4 2.2 109 3.9 3.8 103 LILY LAKE 9156 1.9 2.1 90 4.6 4.3 107 MONTE CRISTO 8960 3.3 3.2 103 4.1 5.5 75 SALT RIVER SUMMIT 7760 1.9 1.2 158* 3.9 3.3 118 ----- ----- Basin Index (%) 100 95 ----------------------------------------------------------------------------- -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.