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 THURSDAY: OCTOBER 31 , 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 .2 350* 1.9 2.0 95 BLACK BEAR 8170 2.4 2.8 86* 2.7 3.8 71 BLIND BULL SUM 8650 1.4 1.3 108* 2.1 2.0 105 COTTONWOOD CREEK 7670 1.8 .8 225* 3.1 2.6 119 EAST RIM DIVIDE 7930 .4 .2 200* 1.6 1.3 123 GRAND TARGHEE 9260 4.5 4.5 100* 4.8 5.2 92 GRANITE CREEK 6770 .5 .2 250* 1.8 1.9 95 GRASSY LAKE 7265 1.4 1.1 127* 2.9 3.4 85 GROS VENTRE SUMMIT 8750 2.6 1.7 153 2.5 1.8 139 GUNSIGHT PASS 9820 2.5 .9 278* 2.8 2.2 127 LEWIS LAKE DIVIDE 7850 .5 .9 56* 1.9 3.2 59 PHILLIPS BENCH 8200 2.1 1.1 191* 3.0 2.4 125 SALT RIVER SUMMIT 7760 1.0 .2 500* 2.6 1.8 144 SNAKE RIVER STATION 6920 .6 .2 300* 1.6 2.5 64 SPRING CREEK DIVIDE 9000 1.4 1.1 127* 2.0 2.2 91 THUMB DIVIDE 7980 .4 .4 100* 1.6 2.2 73 TOGWOTEE PASS 9580 4.1 2.6 158 3.0 2.7 111 TWO OCEAN PLATEAU 9240 4.2 3.1 135 3.0 3.1 97 WILLOW CREEK 8380 1.8 .8 225* 4.5 3.6 125 YOUNTS PEAK 8350 -M 1.5 * -M 2.1 * ----- ----- Basin Index (%) 142* 99 MADISON-GALLATIN BLACK BEAR 8170 2.4 2.8 86* 2.7 3.8 71 CANYON 7870 .6 .5 120* 1.8 1.8 100 MADISON PLATEAU 7750 .2 1.3 15* 2.0 2.8 71 WEST YELLOWSTONE 6700 .0 .1 0* 1.2 1.8 67 WHISKEY CREEK 6800 .0 .4 0* 1.2 2.3 52 ----- ----- Basin Index (%) 63* 71 YELLOWSTONE BEARTOOTH LAKE 9360 2.9 2.6 112 1.7 2.2 77 BURNT MTN 5880 1.8 .0 * 5.8 3.4 171 CANYON 7870 .6 .5 120* 1.8 1.8 100 COLE CREEK 7850 5.0 2.7 185 4.2 3.0 140 EVENING STAR 9200 3.4 2.4 142* 2.9 3.2 91 FISHER CREEK 9100 3.4 2.6 131* 2.5 3.5 71 NORTHEAST ENTRANCE 7350 .0 .0 * .9 1.8 50 PARKER PEAK 9400 3.6 2.6 138 2.7 2.6 104 SYLVAN LAKE 8420 2.2 1.6 138* 3.6 3.0 120 THUMB DIVIDE 7980 .4 .4 100* 1.6 2.2 73 TWO OCEAN PLATEAU 9240 4.2 3.1 135 3.0 3.1 97 WHITE MILL 8700 2.6 2.1 124* 2.1 2.8 75 WOLVERINE 7650 .0 .0 * 1.3 1.9 68 ----- ----- Basin Index (%) 146* 99 WIND RIVER BURROUGHS CREEK 8750 -M 1.1 * -M 1.9 * CASTLE CREEK 8400 .0 -M * 2.0 -M * COLD SPRINGS 9630 2.6 .7 371* 3.9 1.8 217 DEER PARK 9700 2.8 1.6 175* 3.3 3.0 110 HOBBS PARK 10100 4.0 2.0 200 3.9 2.3 170 KIRWIN 9550 3.5 1.6 219 2.7 1.9 142 LITTLE WARM 9370 2.6 1.2 217 3.4 1.8 189 OWL CREEK 8975 2.0 .7 286 2.3 1.3 177 SOUTH PASS 9040 2.2 1.3 169* 2.9 2.3 126 ST. LAWRENCE ALT 8620 1.3 .8 162 3.3 1.8 183 TOGWOTEE PASS 9580 4.1 2.6 158 3.0 2.7 111 TOWNSEND CREEK 8700 1.6 .9 178* 2.9 2.3 126 ----- ----- Basin Index (%) 199 149 BIGHORN BASIN BALD MTN. 9380 5.2 3.0 173 4.0 2.7 148 BEAR TRAP MEADOW 8200 2.2 .5 440* 3.8 1.7 224 BONE SPRINGS DIV 9350 3.3 2.7 122 3.0 2.7 111 GRAVE SPRINGS 8550 3.5 .9 389* 4.2 2.3 183 KIRWIN 9550 3.5 1.6 219 2.7 1.9 142 MARQUETTE 8760 3.5 -M * 4.3 -M * MIDDLE POWDER 7760 5.3 1.0 530* 5.2 2.5 208 OWL CREEK 8975 2.0 .7 286 2.3 1.3 177 POWDER RIVER PASS 9480 3.2 1.4 229 3.4 2.2 155 SHELL CREEK 9580 3.9 2.8 139 3.0 2.4 125 TIMBER CREEK 7950 2.2 .6 367 3.7 2.1 176 ----- ----- Basin Index (%) 226 162 SHOSHONE RIVER BLACKWATER 9780 4.5 2.7 167 2.5 2.7 93 EVENING STAR 9200 3.4 2.4 142* 2.9 3.2 91 MARQUETTE 8760 3.5 -M * 4.3 -M * SYLVAN ROAD 7120 .7 .2 350* 2.7 2.3 117 YOUNTS PEAK 8350 -M 1.5 * -M 2.1 * ----- ----- Basin Index (%) 162* 99 POWDER RIVER BEAR TRAP MEADOW 8200 2.2 .5 440* 3.8 1.7 224 CLOUD PEAK RESERVOIR 9860 3.5 1.9 184 4.6 2.7 170 GRAVE SPRINGS 8550 3.5 .9 389* 4.2 2.3 183 HANSEN SAWMILL 8360 2.5 .3 833* 3.8 1.8 211 MIDDLE POWDER 7760 5.3 1.0 530* 5.2 2.5 208 POWDER RIVER PASS 9480 3.2 1.4 229 3.4 2.2 155 SOLDIER PARK 8720 2.0 -M * 3.6 -M * ----- ----- Basin Index (%) 337* 189 TONGUE RIVER BIG GOOSE 7990 2.2 1.0 220* 4.2 2.5 168 BONE SPRINGS DIV 9350 3.3 2.7 122 3.0 2.7 111 BURGESS JUNCTION 7880 2.8 1.3 215 4.2 2.4 175 DOME LAKE 8880 2.3 1.9 121 3.8 2.7 141 LITTLE GOOSE 8870 3.1 -M * 5.2 -M * SUCKER CREEK 8880 4.2 1.6 262 5.0 2.7 185 TIE CREEK 6870 1.2 .2 600* 4.5 2.8 161 ----- ----- Basin Index (%) 184 156 BELLE FOURCHE COLE CANYON 5910 1.2 .0 * 6.8 2.0 340 ----- ----- Basin Index (%) * 340 CHEYENNE RIVER BASIN BLIND PARK 6890 1.7 .2 850* 7.2 2.3 313 NORTH RAPID CREEK 6130 3.0 .0 * 7.4 2.2 336 ----- ----- Basin Index (%) 2350* 324 UPPER N. PLATTE ARAPAHO RIDGE 10960 3.4 2.9 117 4.1 3.3 124 BLACKHALL MTN 9820 4.2 -M * 5.5 -M * COLUMBINE 9160 1.4 .5 280* 4.0 2.7 148 DIVIDE PEAK 8880 2.4 1.4 171* 5.3 3.2 166 JOE WRIGHT 10120 2.0 2.4 83 5.5 3.4 162 LAPRELE CREEK 8375 .7 .4 175* 2.6 2.0 130 MED BOW 10500 4.5 -M * 5.9 -M * NORTH FRENCH CREEK 10130 -M 2.7 * -M 3.2 * NEVER SUMMER 10280 3.5 2.3 152 4.2 -M * OLD BATTLE 10000 4.1 2.6 158* 4.9 4.2 117 RAWAH 9020 1.8 .3 600* 4.5 2.4 188 SAGE CREEK BASIN 7850 .7 .3 233* 3.3 2.4 138 SAND LAKE 10050 4.6 2.5 184* 5.2 3.0 173 SOUTH BRUSH CREEK 8440 2.3 .5 460* 4.4 2.3 191 TOWER 10500 6.0 3.2 188* 6.4 4.4 145 WEBBER SPRINGS 9250 2.0 1.1 182* 4.0 3.2 125 WILLOW CREEK PASS 9540 2.8 1.2 233* 3.2 2.0 160 ZIRKEL 9340 .7 .8 88* 3.5 3.8 92 ----- ----- Basin Index (%) 171* 144 SWEETWATER DEER PARK 9700 2.8 1.6 175* 3.3 3.0 110 LARSEN CREEK 9000 .0 -M * 2.1 -M * SOUTH PASS 9040 2.2 1.3 169* 2.9 2.3 126 ----- ----- Basin Index (%) 172* 117 LOWER N. PLATTE CASPER MTN. 7900 6.8 1.1 618* 6.6 2.8 236 LAPRELE CREEK 8375 .7 .4 175* 2.6 2.0 130 RENO HILL 8400 6.2 1.2 517* 7.7 2.7 285 WINDY PEAK 7900 .5 .4 125* 2.9 1.7 171 ----- ----- Basin Index (%) 458* 215 LARAMIE RIVER BROOKLYN LAKE 10240 1.8 1.3 138* 2.9 2.3 126 CINNABAR PARK 9574 2.3 1.1 209* 3.6 2.8 129 CROW CREEK 8330 .7 .0 * 3.2 2.0 160 DEADMAN HILL 10220 3.3 2.2 150 4.2 2.4 175 RAWAH 9020 1.8 .3 600* 4.5 2.4 188 ROACH 9700 -M 1.1 * -M 2.4 * ----- ----- Basin Index (%) 202* 155 S. PLATTE BLACK MOUNTAIN 8920 1.8 -M * 3.1 -M * CROW CREEK 8330 .7 .0 * 3.2 2.0 160 DEADMAN HILL 10220 3.3 2.2 150 4.2 2.4 175 ----- ----- Basin Index (%) 182* 168 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.1 .0 * 3.6 2.0 180 DIVIDE PEAK 8880 2.4 1.4 171* 5.3 3.2 166 ELK RIVER 8700 .5 .2 250* 3.4 2.5 136 LITTLE SNAKE RIVER 8915 1.2 .8 150* 5.1 4.6 111 OLD BATTLE 10000 4.1 2.6 158* 4.9 4.2 117 SAGE CREEK BASIN 7850 .7 .3 233* 3.3 2.4 138 SANDSTONE RS 8150 .6 .0 * 3.9 2.2 177 WHISKEY PARK 8950 3.3 .8 412* 5.6 2.9 193 ----- ----- Basin Index (%) 228* 146 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.7 1.4 121 1.9 1.8 106 BLIND BULL SUM 8650 1.4 1.3 108* 2.1 2.0 105 EAST RIM DIVIDE 7930 .4 .2 200* 1.6 1.3 123 ELKHART PARK G.S. 9400 1.7 .9 189* 2.1 1.9 111 GROS VENTRE SUMMIT 8750 2.6 1.7 153 2.5 1.8 139 GUNSIGHT PASS 9820 2.5 .9 278* 2.8 2.2 127 KENDALL R.S. 7740 .3 .3 100* 1.6 1.6 100 LOOMIS PARK 8240 .7 .5 140* 2.0 1.8 111 NEW FORK LAKE 8340 .5 .5 100* .8 1.4 57 POCKET CREEK 9360 2.7 -M * 2.9 -M * SNIDER BASIN 8060 .5 .2 250* 1.4 1.4 100 SPRING CREEK DIVIDE 9000 1.4 1.1 127* 2.0 2.2 91 TRIPLE PEAK 8500 2.2 1.1 200* 2.1 2.2 95 ----- ----- Basin Index (%) 157* 106 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 2.5 -M * BUCK PASTURE 9700 .8 -M * 3.2 -M * EF BLACKS FORK GS 9360 .7 -M * 2.5 -M * HAMS FORK 7840 .6 .0 * 2.4 1.4 171 HEWINTA 9519 .4 .0 * 2.7 2.1 129 HICKERSON PARK 9145 1.3 .1 1300* 2.6 2.0 130 HOLE-IN-ROCK 9150 .8 .0 * 2.2 2.0 110 INDIAN CREEK 9425 1.5 1.9 79* 2.7 2.3 117 KELLEY R.S. 8180 1.3 .5 260* 2.7 1.9 142 SPIRIT LK 10235 1.8 -M * 3.5 -M * STEEL CREEK PARK 10200 .2 1.4 14* 3.2 2.4 133 ----- ----- Basin Index (%) 156* 131 UPPER BEAR RIVER BEAR RIVER RS 8777 .7 -M * 2.4 -M * BUG LAKE 7950 .5 .4 125* 2.0 2.2 91 BURTS MILLER RANCH 8000 .7 -M * 1.3 -M * CHALK CREEK #1 8993 2.4 1.5 160* 3.6 3.1 116 HAYDEN FORK 9212 .7 .2 350* 3.3 2.6 127 KELLEY R.S. 8180 1.3 .5 260* 2.7 1.9 142 LILY LAKE 9156 .7 .6 117* 3.4 2.5 136 MONTE CRISTO 8960 1.1 .5 220* 2.6 2.9 90 SALT RIVER SUMMIT 7760 1.0 .2 500* 2.6 1.8 144 ----- ----- Basin Index (%) 197* 119 ----------------------------------------------------------------------------- -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.