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: NOVEMBER 18 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 3.4 1.9 179 4.7 4.2 112 BLACK BEAR 8170 8.4 6.3 133 8.7 7.4 118 BLIND BULL SUM 8650 4.1 3.3 124 3.9 3.9 100 COTTONWOOD CREEK 7670 3.9 2.6 150 5.4 5.0 108 EAST RIM DIVIDE 7930 1.7 1.3 131 2.8 2.5 112 GRAND TARGHEE 9260 10.8 8.1 133 8.5 8.8 97 GRANITE CREEK 6770 2.2 1.4 157* 3.8 3.8 100 GRASSY LAKE 7265 5.4 3.9 138 7.3 6.8 107 GROS VENTRE SUMMIT 8750 3.8 2.8 136 3.6 3.1 116 GUNSIGHT PASS 9820 3.8 2.5 152 4.0 3.4 118 LEWIS LAKE DIVIDE 7850 4.4 4.2 105 6.2 6.8 91 PHILLIPS BENCH 8200 4.5 3.4 132 5.6 5.1 110 SALT RIVER SUMMIT 7760 1.7 1.0 170* 3.7 3.2 116 SNAKE RIVER STATION 6920 3.1 1.4 221* 4.8 4.6 104 SPRING CREEK DIVIDE 9000 3.5 3.3 106 4.1 4.7 87 THUMB DIVIDE 7980 2.3 2.0 115 3.4 3.9 87 TOGWOTEE PASS 9580 6.7 5.0 134 5.9 5.3 111 TWO OCEAN PLATEAU 9240 7.7 6.0 128 6.1 5.8 105 WILLOW CREEK 8380 4.9 3.6 136 8.2 6.9 119 YOUNTS PEAK 8350 -M 3.0 * -M 3.8 * ----- ----- Basin Index (%) 135 106 MADISON-GALLATIN BLACK BEAR 8170 8.4 6.3 133 8.7 7.4 118 CANYON 7870 2.2 1.8 122 3.7 3.5 106 MADISON PLATEAU 7750 3.5 3.2 109 5.4 5.1 106 WEST YELLOWSTONE 6700 1.8 1.1 164 2.9 3.1 94 WHISKEY CREEK 6800 2.4 1.8 133 3.9 4.1 95 ----- ----- Basin Index (%) 129 106 YELLOWSTONE BEARTOOTH LAKE 9360 5.1 4.6 111 4.0 4.0 100 BURNT MTN 5880 1.2 .1 1200* 6.2 4.3 144 CANYON 7870 2.2 1.8 122 3.7 3.5 106 COLE CREEK 7850 5.1 3.5 146 4.2 4.2 100 EVENING STAR 9200 7.6 4.9 155 7.5 6.1 123 FISHER CREEK 9100 7.7 5.9 131 6.7 6.6 102 NORTHEAST ENTRANCE 7350 1.3 .9 144* 2.2 3.1 71 PARKER PEAK 9400 6.7 4.5 149 6.0 4.3 140 SYLVAN LAKE 8420 4.6 3.6 128 6.2 5.3 117 THUMB DIVIDE 7980 2.3 2.0 115 3.4 3.9 87 TWO OCEAN PLATEAU 9240 7.7 6.0 128 6.1 5.8 105 WHITE MILL 8700 5.7 4.3 133 4.7 5.2 90 WOLVERINE 7650 1.4 1.0 140 2.8 3.1 90 ----- ----- Basin Index (%) 136 107 WIND RIVER BURROUGHS CREEK 8750 -M 2.5 * -M 3.6 * CASTLE CREEK 8400 .6 -M * 2.4 -M * COLD SPRINGS 9630 2.9 1.8 161 4.6 2.9 159 DEER PARK 9700 3.7 3.3 112 4.2 4.7 89 HOBBS PARK 10100 4.4 3.5 126 4.5 3.6 125 KIRWIN 9550 4.4 2.7 163 3.4 3.1 110 LITTLE WARM 9370 3.5 2.2 159 4.4 3.2 138 OWL CREEK 8975 2.1 1.3 162 2.3 1.9 121 SOUTH PASS 9040 3.1 2.8 111 3.8 4.1 93 ST. LAWRENCE ALT 8620 1.4 1.5 93 3.8 2.6 146 TOGWOTEE PASS 9580 6.7 5.0 134 5.9 5.3 111 TOWNSEND CREEK 8700 1.8 1.9 95 3.4 3.4 100 ----- ----- Basin Index (%) 131 116 BIGHORN BASIN BALD MTN. 9380 6.8 4.4 155 5.4 4.2 129 BEAR TRAP MEADOW 8200 2.9 1.0 290 4.0 2.6 154 BONE SPRINGS DIV 9350 4.7 4.1 115 4.1 4.0 102 GRAVE SPRINGS 8550 3.8 1.4 271 4.8 3.1 155 KIRWIN 9550 4.4 2.7 163 3.4 3.1 110 MARQUETTE 8760 3.6 -M * 4.6 -M * MIDDLE POWDER 7760 5.4 1.9 284 5.5 3.6 153 OWL CREEK 8975 2.1 1.3 162 2.3 1.9 121 POWDER RIVER PASS 9480 4.2 2.2 191 4.4 3.2 138 SHELL CREEK 9580 4.9 3.9 126 4.1 3.6 114 TIMBER CREEK 7950 2.0 1.3 154 3.9 2.8 139 ----- ----- Basin Index (%) 170 131 SHOSHONE RIVER BLACKWATER 9780 7.4 4.7 157 5.1 4.9 104 EVENING STAR 9200 7.6 4.9 155 7.5 6.1 123 MARQUETTE 8760 3.6 -M * 4.6 -M * SYLVAN ROAD 7120 2.4 1.5 160 5.0 4.2 119 YOUNTS PEAK 8350 -M 3.0 * -M 3.8 * ----- ----- Basin Index (%) 157 116 POWDER RIVER BEAR TRAP MEADOW 8200 2.9 1.0 290 4.0 2.6 154 CLOUD PEAK RESERVOIR 9860 4.4 3.1 142 5.5 4.0 138 GRAVE SPRINGS 8550 3.8 1.4 271 4.8 3.1 155 HANSEN SAWMILL 8360 2.7 1.0 270 4.2 2.6 162 MIDDLE POWDER 7760 5.4 1.9 284 5.5 3.6 153 POWDER RIVER PASS 9480 4.2 2.2 191 4.4 3.2 138 SOLDIER PARK 8720 2.4 -M * 4.2 -M * ----- ----- Basin Index (%) 221 149 TONGUE RIVER BIG GOOSE 7990 2.7 1.7 159 4.9 3.4 144 BONE SPRINGS DIV 9350 4.7 4.1 115 4.1 4.0 102 BURGESS JUNCTION 7880 3.4 2.4 142 4.9 3.5 140 DOME LAKE 8880 1.9 2.9 66 4.1 4.0 102 LITTLE GOOSE 8870 3.4 -M * 5.9 -M * SUCKER CREEK 8880 4.8 2.6 185 5.8 4.0 145 TIE CREEK 6870 .9 .6 150 5.1 3.6 142 ----- ----- Basin Index (%) 129 128 BELLE FOURCHE COLE CANYON 5910 1.6 .4 400* 7.6 3.0 253 ----- ----- Basin Index (%) 400* 253 CHEYENNE RIVER BASIN BLIND PARK 6890 2.6 1.2 217 8.3 3.7 224 NORTH RAPID CREEK 6130 3.3 .9 367 8.3 3.2 259 ----- ----- Basin Index (%) 281 241 UPPER N. PLATTE ARAPAHO RIDGE 10960 5.9 4.5 131 6.3 5.7 111 BLACKHALL MTN 9820 7.8 -M * 9.0 -M * COLUMBINE 9160 4.3 2.8 154 6.8 5.1 133 DIVIDE PEAK 8880 4.4 3.2 138 7.6 5.1 149 JOE WRIGHT 10120 3.0 4.6 65 7.8 6.2 126 LAPRELE CREEK 8375 1.0 1.8 56 3.1 3.3 94 MED BOW 10500 7.4 -M * 9.0 -M * NORTH FRENCH CREEK 10130 7.3 4.8 152 9.0 5.8 155 NEVER SUMMER 10280 5.6 4.1 137 5.6 -M * OLD BATTLE 10000 7.5 5.7 132 8.9 7.4 120 RAWAH 9020 3.4 1.7 200 6.2 4.1 151 SAGE CREEK BASIN 7850 1.8 1.7 106 4.6 3.6 128 SAND LAKE 10050 7.1 5.0 142 7.6 5.5 138 SOUTH BRUSH CREEK 8440 3.3 1.6 206 5.6 3.8 147 TOWER 10500 10.0 8.4 119 11.9 8.5 140 WEBBER SPRINGS 9250 4.5 3.3 136 6.9 5.7 121 WILLOW CREEK PASS 9540 4.1 2.6 158 4.6 3.5 131 ZIRKEL 9340 4.6 3.3 139 7.5 6.7 112 ----- ----- Basin Index (%) 132 130 SWEETWATER DEER PARK 9700 3.7 3.3 112 4.2 4.7 89 LARSEN CREEK 9000 .5 -M * 3.1 -M * SOUTH PASS 9040 3.1 2.8 111 3.8 4.1 93 ----- ----- Basin Index (%) 111 91 LOWER N. PLATTE CASPER MTN. 7900 6.2 2.7 230 6.5 4.4 148 LAPRELE CREEK 8375 1.0 1.8 56 3.1 3.3 94 RENO HILL 8400 6.2 2.5 248 8.0 4.0 200 WINDY PEAK 7900 1.0 1.4 71 3.5 2.9 121 ----- ----- Basin Index (%) 171 145 LARAMIE RIVER BROOKLYN LAKE 10240 4.1 3.1 132 5.0 4.3 116 CINNABAR PARK 9574 4.5 3.5 129 6.0 5.2 115 CROW CREEK 8330 1.3 1.0 130 3.6 2.9 124 DEADMAN HILL 10220 5.8 3.5 166 6.5 4.2 155 RAWAH 9020 3.4 1.7 200 6.2 4.1 151 ROACH 9700 4.2 2.7 156 6.1 4.3 142 ----- ----- Basin Index (%) 150 134 S. PLATTE BLACK MOUNTAIN 8920 3.0 -M * 4.3 -M * CROW CREEK 8330 1.3 1.0 130 3.6 2.9 124 DEADMAN HILL 10220 5.8 3.5 166 6.5 4.2 155 ----- ----- Basin Index (%) 158 142 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.5 .8 312* 5.5 3.5 157 DIVIDE PEAK 8880 4.4 3.2 138 7.6 5.1 149 ELK RIVER 8700 3.7 1.6 231* 6.4 4.3 149 LITTLE SNAKE RIVER 8915 4.6 2.9 159 9.1 6.9 132 OLD BATTLE 10000 7.5 5.7 132 8.9 7.4 120 SAGE CREEK BASIN 7850 1.8 1.7 106 4.6 3.6 128 SANDSTONE RS 8150 2.6 1.1 236* 5.9 4.1 144 WHISKEY PARK 8950 7.5 3.4 221 10.2 5.5 185 ----- ----- Basin Index (%) 170 144 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 2.9 93 2.7 3.1 87 BLIND BULL SUM 8650 4.1 3.3 124 3.9 3.9 100 EAST RIM DIVIDE 7930 1.7 1.3 131 2.8 2.5 112 ELKHART PARK G.S. 9400 2.5 2.4 104 2.9 3.2 91 GROS VENTRE SUMMIT 8750 3.8 2.8 136 3.6 3.1 116 GUNSIGHT PASS 9820 3.8 2.5 152 4.0 3.4 118 KENDALL R.S. 7740 1.7 1.6 106 2.9 3.0 97 LOOMIS PARK 8240 2.8 2.1 133 4.0 3.5 114 NEW FORK LAKE 8340 1.2 1.6 75 1.8 2.6 69 POCKET CREEK 9360 3.8 -M * 3.2 -M * SNIDER BASIN 8060 1.8 1.6 112 2.6 2.9 90 SPRING CREEK DIVIDE 9000 3.5 3.3 106 4.1 4.7 87 TRIPLE PEAK 8500 3.4 3.2 106 4.8 4.8 100 ----- ----- Basin Index (%) 115 99 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 3.3 -M * BUCK PASTURE 9700 1.8 -M * 4.4 -M * EF BLACKS FORK GS 9360 1.4 -M * 3.3 -M * HAMS FORK 7840 .5 1.2 42 3.1 2.6 119 HEWINTA 9519 .6 1.3 46 3.7 3.5 106 HICKERSON PARK 9145 1.8 1.3 138 3.0 3.1 97 HOLE-IN-ROCK 9150 .7 1.1 64 2.9 3.0 97 INDIAN CREEK 9425 3.0 4.2 71 3.9 4.4 89 KELLEY R.S. 8180 2.2 2.0 110 3.6 3.6 100 SPIRIT LK 10235 2.2 -M * 4.1 -M * STEEL CREEK PARK 10200 .2 3.0 7 4.4 4.1 107 ----- ----- Basin Index (%) 64 101 UPPER BEAR RIVER BEAR RIVER RS 8777 .8 -M * 3.3 -M * BUG LAKE 7950 2.2 2.2 100 3.4 4.0 85 BURTS MILLER RANCH 8000 .6 -M * 1.7 -M * CHALK CREEK #1 8993 4.0 3.5 114 5.4 5.6 96 HAYDEN FORK 9212 1.4 1.9 74 4.6 4.6 100 KELLEY R.S. 8180 2.2 2.0 110 3.6 3.6 100 LILY LAKE 9156 1.7 1.9 89 4.5 4.2 107 MONTE CRISTO 8960 2.9 2.8 104 3.9 5.2 75 SALT RIVER SUMMIT 7760 1.7 1.0 170* 3.7 3.2 116 ----- ----- Basin Index (%) 105 96 ----------------------------------------------------------------------------- -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.