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 TUESDAY: OCTOBER 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 .1 .0 * 1.4 1.4 100 BLACK BEAR 8170 1.7 1.8 94* 2.1 2.4 88 BLIND BULL SUM 8650 .7 .6 117* 1.3 1.4 93 COTTONWOOD CREEK 7670 .5 .0 * 1.6 1.8 89 EAST RIM DIVIDE 7930 .1 .0 * 1.2 .9 133 GRAND TARGHEE 9260 2.4 3.6 67* 2.9 4.4 66 GRANITE CREEK 6770 .1 .0 * 1.1 1.3 85 GRASSY LAKE 7265 .2 .0 * 1.5 2.2 68 GROS VENTRE SUMMIT 8750 2.1 1.0 210* 2.1 1.2 175 GUNSIGHT PASS 9820 2.2 .6 367* 2.5 1.6 156 LEWIS LAKE DIVIDE 7850 .0 .0 * 1.3 2.0 65 PHILLIPS BENCH 8200 .5 .0 * 1.5 1.6 94 SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.1 127 SNAKE RIVER STATION 6920 .0 .0 * 1.0 1.8 56 SPRING CREEK DIVIDE 9000 .6 .6 100* 1.1 1.4 79 THUMB DIVIDE 7980 .0 .0 * 1.2 1.5 80 TOGWOTEE PASS 9580 3.4 1.9 179* 2.3 1.8 128 TWO OCEAN PLATEAU 9240 3.2 2.2 145* 2.3 2.0 115 WILLOW CREEK 8380 .2 .1 200* 2.5 2.4 104 YOUNTS PEAK 8350 -M .8 * -M 1.5 * ----- ----- Basin Index (%) 145* 94 MADISON-GALLATIN BLACK BEAR 8170 1.7 1.8 94* 2.1 2.4 88 CANYON 7870 .5 .2 250* 1.7 1.3 131 MADISON PLATEAU 7750 .0 .7 0* 1.7 1.8 94 WEST YELLOWSTONE 6700 .0 .0 * 1.2 1.4 86 WHISKEY CREEK 6800 .3 .0 * 1.3 1.6 81 ----- ----- Basin Index (%) 93* 94 YELLOWSTONE BEARTOOTH LAKE 9360 2.7 1.7 159* 1.5 1.5 100 BURNT MTN 5880 1.8 .0 * 5.2 2.7 193 CANYON 7870 .5 .2 250* 1.7 1.3 131 COLE CREEK 7850 4.8 1.6 300* 3.9 2.3 170 EVENING STAR 9200 3.1 1.4 221* 2.5 2.2 114 FISHER CREEK 9100 3.3 1.6 206* 2.3 2.4 96 NORTHEAST ENTRANCE 7350 .0 .0 * .8 1.2 67 PARKER PEAK 9400 3.1 1.6 194* 2.2 2.0 110 SYLVAN LAKE 8420 1.1 1.0 110* 2.1 2.1 100 THUMB DIVIDE 7980 .0 .0 * 1.2 1.5 80 TWO OCEAN PLATEAU 9240 3.2 2.2 145* 2.3 2.0 115 WHITE MILL 8700 2.4 1.3 185* 1.7 1.9 89 WOLVERINE 7650 .0 .0 * 1.3 1.3 100 ----- ----- Basin Index (%) 206* 118 WIND RIVER BURROUGHS CREEK 8750 -M .4 * -M 1.3 * CASTLE CREEK 8400 .0 -M * 1.8 -M * COLD SPRINGS 9630 2.4 .2 1200* 3.5 1.3 269 DEER PARK 9700 2.4 1.2 200* 2.8 2.0 140 HOBBS PARK 10100 3.5 1.1 318* 3.7 1.6 231 KIRWIN 9550 3.4 1.0 340* 2.6 1.4 186 LITTLE WARM 9370 2.4 .6 400* 3.3 1.4 236 OWL CREEK 8975 1.8 .4 450* 2.0 .9 222 SOUTH PASS 9040 1.8 .4 450* 2.6 1.5 173 ST. LAWRENCE ALT 8620 1.2 .1 1200* 3.1 1.3 238 TOGWOTEE PASS 9580 3.4 1.9 179* 2.3 1.8 128 TOWNSEND CREEK 8700 -M .0 * -M 1.6 * ----- ----- Basin Index (%) 323* 196 BIGHORN BASIN BALD MTN. 9380 5.2 2.2 236 3.7 2.0 185 BEAR TRAP MEADOW 8200 2.4 .2 1200* 3.6 1.3 277 BONE SPRINGS DIV 9350 3.4 1.7 200 3.1 2.0 155 GRAVE SPRINGS 8550 3.4 .5 680* 4.0 1.7 235 KIRWIN 9550 3.4 1.0 340* 2.6 1.4 186 MARQUETTE 8760 3.7 -M * 4.3 -M * MIDDLE POWDER 7760 5.7 .5 1140* 5.1 1.8 283 OWL CREEK 8975 1.8 .4 450* 2.0 .9 222 POWDER RIVER PASS 9480 3.1 .7 443* 3.3 1.6 206 SHELL CREEK 9580 3.8 2.2 173 2.8 1.7 165 TIMBER CREEK 7950 2.2 .2 1100* 3.5 1.5 233 ----- ----- Basin Index (%) 358* 212 SHOSHONE RIVER BLACKWATER 9780 4.4 1.8 244* 2.4 2.0 120 EVENING STAR 9200 3.1 1.4 221* 2.5 2.2 114 MARQUETTE 8760 3.7 -M * 4.3 -M * SYLVAN ROAD 7120 .0 .0 * 2.0 1.7 118 YOUNTS PEAK 8350 -M .8 * -M 1.5 * ----- ----- Basin Index (%) 234* 117 POWDER RIVER BEAR TRAP MEADOW 8200 2.4 .2 1200* 3.6 1.3 277 CLOUD PEAK RESERVOIR 9860 3.6 1.2 300* 4.4 2.1 210 GRAVE SPRINGS 8550 3.4 .5 680* 4.0 1.7 235 HANSEN SAWMILL 8360 2.3 .0 * 3.6 1.4 257 MIDDLE POWDER 7760 5.7 .5 1140* 5.1 1.8 283 POWDER RIVER PASS 9480 3.1 .7 443* 3.3 1.6 206 SOLDIER PARK 8720 1.9 -M * 3.5 -M * ----- ----- Basin Index (%) 661* 242 TONGUE RIVER BIG GOOSE 7990 2.7 .6 450* 4.2 2.0 210 BONE SPRINGS DIV 9350 3.4 1.7 200 3.1 2.0 155 BURGESS JUNCTION 7880 3.1 .7 443* 4.2 1.8 233 DOME LAKE 8880 2.7 1.1 245* 3.8 2.0 190 LITTLE GOOSE 8870 3.4 -M * 5.1 -M * SUCKER CREEK 8880 4.4 .9 489* 5.1 2.0 255 TIE CREEK 6870 1.9 .0 * 4.5 2.1 214 ----- ----- Basin Index (%) 364* 209 BELLE FOURCHE COLE CANYON 5910 2.5 .0 * 6.7 1.4 479 ----- ----- Basin Index (%) * 479 CHEYENNE RIVER BASIN BLIND PARK 6890 2.9 .0 * 7.1 1.7 418 NORTH RAPID CREEK 6130 3.8 .0 * 7.4 1.5 493 ----- ----- Basin Index (%) * 453 UPPER N. PLATTE ARAPAHO RIDGE 10960 2.6 1.8 144* 3.3 2.3 143 BLACKHALL MTN 9820 3.9 -M * 5.0 -M * COLUMBINE 9160 1.4 .0 * 3.4 1.9 179 DIVIDE PEAK 8880 2.5 .6 417* 4.9 2.2 223 JOE WRIGHT 10120 1.8 1.1 164* 4.7 2.4 196 LAPRELE CREEK 8375 .8 .0 * 2.7 1.3 208 MED BOW 10500 4.3 -M * 5.2 -M * NORTH FRENCH CREEK 10130 -M 1.6 * -M 2.3 * NEVER SUMMER 10280 2.8 1.3 215* 3.5 -M * OLD BATTLE 10000 3.7 1.5 247* 4.4 2.8 157 RAWAH 9020 1.8 .0 * 4.1 1.7 241 SAGE CREEK BASIN 7850 .2 .0 * 2.9 1.6 181 SAND LAKE 10050 4.4 1.6 275* 5.0 2.2 227 SOUTH BRUSH CREEK 8440 2.3 .0 * 4.3 1.7 253 TOWER 10500 5.0 2.0 250* 5.7 2.9 197 WEBBER SPRINGS 9250 1.7 .5 340* 3.7 2.2 168 WILLOW CREEK PASS 9540 2.2 .4 550* 2.7 1.4 193 ZIRKEL 9340 -M .2 * 3.0 3.0 100 ----- ----- Basin Index (%) 307* 185 SWEETWATER DEER PARK 9700 2.4 1.2 200* 2.8 2.0 140 LARSEN CREEK 9000 .0 -M * 1.9 -M * SOUTH PASS 9040 1.8 .4 450* 2.6 1.5 173 ----- ----- Basin Index (%) 262* 154 LOWER N. PLATTE CASPER MTN. 7900 7.0 .3 2333* 6.6 1.9 347 LAPRELE CREEK 8375 .8 .0 * 2.7 1.3 208 RENO HILL 8400 -M .8 * -M 1.8 * WINDY PEAK 7900 .6 .0 * 2.6 1.2 217 ----- ----- Basin Index (%) 2800* 270 LARAMIE RIVER BROOKLYN LAKE 10240 1.8 .5 360* 2.8 1.6 175 CINNABAR PARK 9574 2.0 .7 286* 3.3 2.0 165 CROW CREEK 8330 .8 .0 * 2.7 1.4 193 DEADMAN HILL 10220 2.9 1.2 242* 3.7 1.7 218 RAWAH 9020 1.8 .0 * 4.1 1.7 241 ROACH 9700 -M .4 * -M 1.7 * ----- ----- Basin Index (%) 388* 198 S. PLATTE BLACK MOUNTAIN 8920 1.6 -M * 2.7 -M * CROW CREEK 8330 .8 .0 * 2.7 1.4 193 DEADMAN HILL 10220 2.9 1.2 242* 3.7 1.7 218 ----- ----- Basin Index (%) 308* 206 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .8 .0 * 3.1 1.2 258 DIVIDE PEAK 8880 2.5 .6 417* 4.9 2.2 223 ELK RIVER 8700 1.1 .0 * 3.1 1.8 172 LITTLE SNAKE RIVER 8915 2.0 .5 400* 4.7 3.3 142 OLD BATTLE 10000 3.7 1.5 247* 4.4 2.8 157 SAGE CREEK BASIN 7850 .2 .0 * 2.9 1.6 181 SANDSTONE RS 8150 1.4 .0 * 3.4 1.4 243 WHISKEY PARK 8950 3.3 .2 1650* 5.2 1.9 274 ----- ----- Basin Index (%) 536* 196 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.2 .7 171* 1.5 1.2 125 BLIND BULL SUM 8650 .7 .6 117* 1.3 1.4 93 EAST RIM DIVIDE 7930 .1 .0 * 1.2 .9 133 ELKHART PARK G.S. 9400 1.3 .5 260* 2.0 1.2 167 GROS VENTRE SUMMIT 8750 2.1 1.0 210* 2.1 1.2 175 GUNSIGHT PASS 9820 2.2 .6 367* 2.5 1.6 156 KENDALL R.S. 7740 .1 .0 * 1.2 1.0 120 LOOMIS PARK 8240 .4 .0 * 1.4 1.1 127 NEW FORK LAKE 8340 .3 .0 * .7 .9 78 POCKET CREEK 9360 2.3 -M * 2.5 -M * SNIDER BASIN 8060 .2 .0 * 1.1 .9 122 SPRING CREEK DIVIDE 9000 .6 .6 100* 1.1 1.4 79 TRIPLE PEAK 8500 .9 .4 225* 1.3 1.5 87 ----- ----- Basin Index (%) 230* 122 LOWER GREEN RIVER BLACKS FORK JCT 8870 -M -M * 1.8 -M * BUCK PASTURE 9700 .6 -M * 2.3 -M * EF BLACKS FORK GS 9360 .5 -M * 1.8 -M * HAMS FORK 7840 .0 .0 * 1.5 .9 167 HEWINTA 9519 .0 .0 * 2.0 1.4 143 HICKERSON PARK 9145 .0 .0 * 1.5 1.2 125 HOLE-IN-ROCK 9150 .0 .0 * 1.3 1.4 93 INDIAN CREEK 9425 .9 .9 100* 1.6 1.4 114 KELLEY R.S. 8180 .7 .0 * 1.6 1.2 133 SPIRIT LK 10235 1.0 -M * 2.0 -M * STEEL CREEK PARK 10200 -M .7 * 2.4 1.7 141 ----- ----- Basin Index (%) 178* 129 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 1.7 -M * BUG LAKE 7950 1.1 .0 * 1.5 1.5 100 BURTS MILLER RANCH 8000 .1 -M * .8 -M * CHALK CREEK #1 8993 1.2 .4 300* 2.4 2.1 114 HAYDEN FORK 9212 .1 .0 * 2.5 1.8 139 KELLEY R.S. 8180 .7 .0 * 1.6 1.2 133 LILY LAKE 9156 .0 .0 * 2.5 1.7 147 MONTE CRISTO 8960 .4 .0 * 1.6 1.9 84 SALT RIVER SUMMIT 7760 .0 .0 * 1.4 1.1 127 ----- ----- Basin Index (%) 875* 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.