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: OCTOBER 14 , 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 * 1.0 .8 125 BLACK BEAR 8170 1.6 .8 200* 2.0 1.6 125 BLIND BULL SUM 8650 .6 .1 600* 1.3 .8 162 COTTONWOOD CREEK 7670 .5 .0 * 1.3 1.0 130 EAST RIM DIVIDE 7930 .4 .0 * 1.1 .6 183 GRAND TARGHEE 9260 2.1 1.3 162* 2.4 2.6 92 GRANITE CREEK 6770 .2 .0 * 1.0 .7 143 GRASSY LAKE 7265 .2 .0 * 1.7 1.4 121 GROS VENTRE SUMMIT 8750 1.7 .5 340* 1.6 .7 229 GUNSIGHT PASS 9820 2.2 .0 * 2.3 1.0 230 LEWIS LAKE DIVIDE 7850 .2 .0 * 1.3 1.3 100 PHILLIPS BENCH 8200 .4 .0 * 1.4 .9 156 SALT RIVER SUMMIT 7760 .0 .0 * 1.1 .7 157 SNAKE RIVER STATION 6920 .3 .0 * .9 1.1 82 SPRING CREEK DIVIDE 9000 .5 .0 * 1.0 .8 125 THUMB DIVIDE 7980 .2 .0 * 1.0 1.0 100 TOGWOTEE PASS 9580 3.4 1.0 340* 2.1 1.0 210 TWO OCEAN PLATEAU 9240 3.1 1.2 258* 2.1 1.2 175 WILLOW CREEK 8380 .2 .0 * 2.1 1.4 150 YOUNTS PEAK 8350 -M .4 * -M 1.0 * ----- ----- Basin Index (%) 365* 139 MADISON-GALLATIN BLACK BEAR 8170 1.6 .8 200* 2.0 1.6 125 CANYON 7870 1.0 .0 * 1.6 .9 178 MADISON PLATEAU 7750 .4 .3 133* 1.7 1.2 142 WEST YELLOWSTONE 6700 .4 .0 * 1.2 .9 133 WHISKEY CREEK 6800 .3 .0 * 1.3 1.0 130 ----- ----- Basin Index (%) 336* 139 YELLOWSTONE BEARTOOTH LAKE 9360 2.1 1.0 210* .9 .9 100 BURNT MTN 5880 1.0 .0 * 3.4 2.2 155 CANYON 7870 1.0 .0 * 1.6 .9 178 COLE CREEK 7850 2.5 1.0 250* 2.1 1.5 140 EVENING STAR 9200 2.6 .8 325* 1.9 1.4 136 FISHER CREEK 9100 2.7 1.0 270* 1.3 1.4 93 NORTHEAST ENTRANCE 7350 .2 .0 * .6 .8 75 PARKER PEAK 9400 2.6 1.0 260* 1.6 1.3 123 SYLVAN LAKE 8420 .9 .4 225* 1.8 1.4 129 THUMB DIVIDE 7980 .2 .0 * 1.0 1.0 100 TWO OCEAN PLATEAU 9240 3.1 1.2 258* 2.1 1.2 175 WHITE MILL 8700 2.0 .8 250* 1.0 1.2 83 WOLVERINE 7650 .0 .0 * .9 .9 100 ----- ----- Basin Index (%) 290* 125 WIND RIVER BURROUGHS CREEK 8750 -M .0 * -M .8 * CASTLE CREEK 8400 .5 -M * 1.8 -M * COLD SPRINGS 9630 1.9 .0 * 2.6 .8 325 DEER PARK 9700 2.0 .6 333* 2.3 1.4 164 HOBBS PARK 10100 2.9 .6 483* 2.8 .9 311 KIRWIN 9550 3.0 .6 500* 2.2 .9 244 LITTLE WARM 9370 2.3 .2 1150* 2.7 .8 338 OWL CREEK 8975 1.3 .0 * 1.6 .7 229 SOUTH PASS 9040 1.3 .0 * 2.2 1.0 220 ST. LAWRENCE ALT 8620 .6 .0 * 2.1 .8 262 TOGWOTEE PASS 9580 3.4 1.0 340* 2.1 1.0 210 TOWNSEND CREEK 8700 -M .0 * -M 1.0 * ----- ----- Basin Index (%) 623* 248 BIGHORN BASIN BALD MTN. 9380 3.2 1.5 213* 2.0 1.3 154 BEAR TRAP MEADOW 8200 1.5 .0 * 2.4 .8 300 BONE SPRINGS DIV 9350 2.0 1.2 167* 1.7 1.3 131 GRAVE SPRINGS 8550 2.5 .0 * 3.0 1.1 273 KIRWIN 9550 3.0 .6 500* 2.2 .9 244 MARQUETTE 8760 3.0 -M * 3.4 -M * MIDDLE POWDER 7760 3.3 .3 1100* 3.1 1.1 282 OWL CREEK 8975 1.3 .0 * 1.6 .7 229 POWDER RIVER PASS 9480 1.9 .2 950* 2.1 1.0 210 SHELL CREEK 9580 2.8 1.4 200* 1.8 1.2 150 TIMBER CREEK 7950 1.4 .0 * 2.6 1.0 260 ----- ----- Basin Index (%) 440* 216 SHOSHONE RIVER BLACKWATER 9780 4.0 1.1 364* 2.0 1.3 154 EVENING STAR 9200 2.6 .8 325* 1.9 1.4 136 MARQUETTE 8760 3.0 -M * 3.4 -M * SYLVAN ROAD 7120 .3 .0 * 1.8 1.0 180 YOUNTS PEAK 8350 -M .4 * -M 1.0 * ----- ----- Basin Index (%) 363* 154 POWDER RIVER BEAR TRAP MEADOW 8200 1.5 .0 * 2.4 .8 300 CLOUD PEAK RESERVOIR 9860 2.7 .4 675* 3.4 1.3 262 GRAVE SPRINGS 8550 2.5 .0 * 3.0 1.1 273 HANSEN SAWMILL 8360 1.9 .0 * 3.0 .9 333 MIDDLE POWDER 7760 3.3 .3 1100* 3.1 1.1 282 POWDER RIVER PASS 9480 1.9 .2 950* 2.1 1.0 210 SOLDIER PARK 8720 1.7 -M * 2.9 -M * ----- ----- Basin Index (%) 1533* 274 TONGUE RIVER BIG GOOSE 7990 1.7 .1 1700* 2.9 1.3 223 BONE SPRINGS DIV 9350 2.0 1.2 167* 1.7 1.3 131 BURGESS JUNCTION 7880 1.6 .4 400* 2.3 1.2 192 DOME LAKE 8880 2.0 .6 333* 2.9 1.3 223 LITTLE GOOSE 8870 2.4 -M * 3.6 -M * SUCKER CREEK 8880 2.3 .4 575* 2.8 1.3 215 TIE CREEK 6870 .9 .0 * 3.0 1.4 214 ----- ----- Basin Index (%) 389* 200 BELLE FOURCHE COLE CANYON 5910 -M .0 * -M 1.2 * ----- ----- Basin Index (%) * * CHEYENNE RIVER BASIN BLIND PARK 6890 -M .0 * 5.8 1.1 527 NORTH RAPID CREEK 6130 3.9 .0 * -M 1.0 * ----- ----- Basin Index (%) * 527 UPPER N. PLATTE ARAPAHO RIDGE 10960 1.7 .5 340* 2.3 1.2 192 BLACKHALL MTN 9820 2.2 -M * 3.2 -M * COLUMBINE 9160 .8 .0 * 2.4 1.2 200 DIVIDE PEAK 8880 1.9 .0 * 3.9 1.4 279 JOE WRIGHT 10120 .0 .4 0* 2.3 1.5 153 LAPRELE CREEK 8375 .6 .0 * 2.2 .8 275 MED BOW 10500 3.3 -M * 3.9 -M * NORTH FRENCH CREEK 10130 -M .6 * -M 1.4 * NEVER SUMMER 10280 1.3 .5 260* 1.9 -M * OLD BATTLE 10000 2.6 .7 371* 3.1 1.8 172 RAWAH 9020 .6 .0 * 2.8 1.0 280 SAGE CREEK BASIN 7850 .4 .0 * 2.4 1.1 218 SAND LAKE 10050 3.0 .7 429* 3.4 1.4 243 SOUTH BRUSH CREEK 8440 1.7 .0 * -M 1.1 * TOWER 10500 3.0 .9 333* 3.6 1.8 200 WEBBER SPRINGS 9250 .8 .0 * 2.4 1.4 171 WILLOW CREEK PASS 9540 1.0 .0 * 1.5 .8 188 ZIRKEL 9340 -M .0 * 2.1 1.9 111 ----- ----- Basin Index (%) 524* 199 SWEETWATER DEER PARK 9700 2.0 .6 333* 2.3 1.4 164 LARSEN CREEK 9000 .5 -M * 1.7 -M * SOUTH PASS 9040 1.3 .0 * 2.2 1.0 220 ----- ----- Basin Index (%) 550* 188 LOWER N. PLATTE CASPER MTN. 7900 -M .1 * -M 1.1 * LAPRELE CREEK 8375 .6 .0 * 2.2 .8 275 RENO HILL 8400 -M .0 * -M 1.0 * WINDY PEAK 7900 .2 .0 * 2.1 .8 262 ----- ----- Basin Index (%) * 269 LARAMIE RIVER BROOKLYN LAKE 10240 1.4 .0 * 1.8 1.0 180 CINNABAR PARK 9574 1.6 .0 * 2.7 1.2 225 CROW CREEK 8330 .1 .0 * 1.8 1.0 180 DEADMAN HILL 10220 1.0 .4 250* 1.8 1.0 180 RAWAH 9020 .6 .0 * 2.8 1.0 280 ROACH 9700 -M .0 * -M 1.0 * ----- ----- Basin Index (%) 1175* 210 S. PLATTE BLACK MOUNTAIN 8920 .2 -M * 1.3 -M * CROW CREEK 8330 .1 .0 * 1.8 1.0 180 DEADMAN HILL 10220 1.0 .4 250* 1.8 1.0 180 ----- ----- Basin Index (%) 275* 180 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .7 .0 * 2.3 .8 288 DIVIDE PEAK 8880 1.9 .0 * 3.9 1.4 279 ELK RIVER 8700 .5 .0 * 2.1 1.2 175 LITTLE SNAKE RIVER 8915 1.3 .0 * 3.2 1.9 168 OLD BATTLE 10000 2.6 .7 371* 3.1 1.8 172 SAGE CREEK BASIN 7850 .4 .0 * 2.4 1.1 218 SANDSTONE RS 8150 .9 .0 * 2.2 1.0 220 WHISKEY PARK 8950 2.3 .0 * 3.6 1.3 277 ----- ----- Basin Index (%) 1514* 217 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.1 .1 1100* 1.2 .8 150 BLIND BULL SUM 8650 .6 .1 600* 1.3 .8 162 EAST RIM DIVIDE 7930 .4 .0 * 1.1 .6 183 ELKHART PARK G.S. 9400 .9 .0 * 1.1 .8 138 GROS VENTRE SUMMIT 8750 1.7 .5 340* 1.6 .7 229 GUNSIGHT PASS 9820 2.2 .0 * 2.3 1.0 230 KENDALL R.S. 7740 .2 .0 * 1.2 .6 200 LOOMIS PARK 8240 .7 .0 * 1.4 .8 175 NEW FORK LAKE 8340 .4 .0 * .5 .6 83 POCKET CREEK 9360 1.8 -M * 1.9 -M * SNIDER BASIN 8060 .3 .0 * .9 .5 180 SPRING CREEK DIVIDE 9000 .5 .0 * 1.0 .8 125 TRIPLE PEAK 8500 .4 .0 * 1.2 .9 133 ----- ----- Basin Index (%) 1343* 166 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 1.4 -M * BUCK PASTURE 9700 .6 -M * 1.7 -M * EF BLACKS FORK GS 9360 .4 -M * 1.4 -M * HAMS FORK 7840 .1 .0 * 1.4 .5 280 HEWINTA 9519 .4 .0 * 1.8 .9 200 HICKERSON PARK 9145 .4 .0 * 1.3 .8 162 HOLE-IN-ROCK 9150 .1 .0 * 1.1 .8 138 INDIAN CREEK 9425 .9 .5 180* 1.5 .9 167 KELLEY R.S. 8180 .7 .0 * 1.4 .7 200 SPIRIT LK 10235 .9 -M * 1.8 -M * STEEL CREEK PARK 10200 .7 .4 175* 1.9 1.1 173 ----- ----- Basin Index (%) 367* 182 UPPER BEAR RIVER BEAR RIVER RS 8777 .2 -M * 1.3 -M * BUG LAKE 7950 .7 .0 * 1.4 1.0 140 BURTS MILLER RANCH 8000 .3 -M * .6 -M * CHALK CREEK #1 8993 .9 .0 * 2.0 1.3 154 HAYDEN FORK 9212 .4 .0 * 2.1 1.1 191 KELLEY R.S. 8180 .7 .0 * 1.4 .7 200 LILY LAKE 9156 .4 .0 * 2.0 1.1 182 MONTE CRISTO 8960 .8 .0 * 1.7 1.2 142 SALT RIVER SUMMIT 7760 .0 .0 * 1.1 .7 157 ----- ----- Basin Index (%) * 165 ----------------------------------------------------------------------------- -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.