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 FRIDAY: OCTOBER 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 .1 .0 * 1.4 1.1 127 BLACK BEAR 8170 1.7 1.3 131* 2.0 2.0 100 BLIND BULL SUM 8650 .6 .3 200* 1.4 1.1 127 COTTONWOOD CREEK 7670 .4 .0 * 1.6 1.4 114 EAST RIM DIVIDE 7930 .1 .0 * 1.2 .7 171 GRAND TARGHEE 9260 2.3 2.3 100* 2.6 3.3 79 GRANITE CREEK 6770 .1 .0 * 1.1 1.0 110 GRASSY LAKE 7265 .1 .0 * 1.5 1.8 83 GROS VENTRE SUMMIT 8750 2.1 .8 262* 2.0 1.0 200 GUNSIGHT PASS 9820 2.1 .3 700* 2.3 1.2 192 LEWIS LAKE DIVIDE 7850 .0 .0 * 1.3 1.6 81 PHILLIPS BENCH 8200 .4 .0 * 1.4 1.2 117 SALT RIVER SUMMIT 7760 .0 .0 * 1.4 .9 156 SNAKE RIVER STATION 6920 .0 .0 * 1.0 1.4 71 SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.1 91 THUMB DIVIDE 7980 .0 .0 * 1.2 1.3 92 TOGWOTEE PASS 9580 3.4 1.6 212* 2.3 1.4 164 TWO OCEAN PLATEAU 9240 3.3 1.7 194* 2.3 1.6 144 WILLOW CREEK 8380 .3 .0 * 2.5 1.9 132 YOUNTS PEAK 8350 -M .5 * -M 1.2 * ----- ----- Basin Index (%) 203* 117 MADISON-GALLATIN BLACK BEAR 8170 1.7 1.3 131* 2.0 2.0 100 CANYON 7870 .4 .2 200* 1.7 1.1 155 MADISON PLATEAU 7750 .4 .5 80* 1.7 1.5 113 WEST YELLOWSTONE 6700 .0 .0 * 1.2 1.0 120 WHISKEY CREEK 6800 .3 .0 * 1.3 1.3 100 ----- ----- Basin Index (%) 140* 114 YELLOWSTONE BEARTOOTH LAKE 9360 2.4 1.4 171* 1.2 1.3 92 BURNT MTN 5880 2.1 .0 * 4.9 2.5 196 CANYON 7870 .4 .2 200* 1.7 1.1 155 COLE CREEK 7850 4.3 1.4 307* 3.6 2.1 171 EVENING STAR 9200 3.0 1.1 273* 2.3 1.8 128 FISHER CREEK 9100 3.1 1.3 238* 1.8 2.0 90 NORTHEAST ENTRANCE 7350 .2 .0 * .8 1.0 80 PARKER PEAK 9400 3.1 1.3 238* 2.1 1.6 131 SYLVAN LAKE 8420 1.1 .6 183* 2.1 1.8 117 THUMB DIVIDE 7980 .0 .0 * 1.2 1.3 92 TWO OCEAN PLATEAU 9240 3.3 1.7 194* 2.3 1.6 144 WHITE MILL 8700 2.2 1.0 220* 1.4 1.6 88 WOLVERINE 7650 .3 .0 * 1.2 1.2 100 ----- ----- Basin Index (%) 255* 127 WIND RIVER BURROUGHS CREEK 8750 -M .2 * -M 1.0 * CASTLE CREEK 8400 .5 -M * 1.7 -M * COLD SPRINGS 9630 2.4 .0 * 3.5 1.1 318 DEER PARK 9700 2.2 .7 314* 2.6 1.6 162 HOBBS PARK 10100 3.5 .8 438* 3.6 1.3 277 KIRWIN 9550 3.2 .8 400* 2.4 1.1 218 LITTLE WARM 9370 2.4 .3 800* 3.0 1.1 273 OWL CREEK 8975 1.6 .2 800* 1.9 .8 238 SOUTH PASS 9040 1.6 .1 1600* 2.4 1.2 200 ST. LAWRENCE ALT 8620 1.3 .0 * 3.2 1.0 320 TOGWOTEE PASS 9580 3.4 1.6 212* 2.3 1.4 164 TOWNSEND CREEK 8700 -M .0 * -M 1.4 * ----- ----- Basin Index (%) 480* 235 BIGHORN BASIN BALD MTN. 9380 4.5 1.9 237* 3.1 1.7 182 BEAR TRAP MEADOW 8200 2.0 .2 1000* 3.2 1.1 291 BONE SPRINGS DIV 9350 3.0 1.4 214* 2.6 1.7 153 GRAVE SPRINGS 8550 3.0 .1 3000* 3.7 1.5 247 KIRWIN 9550 3.2 .8 400* 2.4 1.1 218 MARQUETTE 8760 3.6 -M * 4.1 -M * MIDDLE POWDER 7760 5.0 .4 1250* 4.4 1.6 275 OWL CREEK 8975 1.6 .2 800* 1.9 .8 238 POWDER RIVER PASS 9480 2.7 .4 675* 2.8 1.4 200 SHELL CREEK 9580 3.3 1.8 183 2.4 1.5 160 TIMBER CREEK 7950 2.0 .0 * 3.3 1.4 236 ----- ----- Basin Index (%) 421* 216 SHOSHONE RIVER BLACKWATER 9780 4.4 1.5 293* 2.3 1.7 135 EVENING STAR 9200 3.0 1.1 273* 2.3 1.8 128 MARQUETTE 8760 3.6 -M * 4.1 -M * SYLVAN ROAD 7120 .1 .0 * 2.0 1.4 143 YOUNTS PEAK 8350 -M .5 * -M 1.2 * ----- ----- Basin Index (%) 288* 135 POWDER RIVER BEAR TRAP MEADOW 8200 2.0 .2 1000* 3.2 1.1 291 CLOUD PEAK RESERVOIR 9860 3.2 .8 400* 3.9 1.8 217 GRAVE SPRINGS 8550 3.0 .1 3000* 3.7 1.5 247 HANSEN SAWMILL 8360 2.1 .0 * 3.3 1.2 275 MIDDLE POWDER 7760 5.0 .4 1250* 4.4 1.6 275 POWDER RIVER PASS 9480 2.7 .4 675* 2.8 1.4 200 SOLDIER PARK 8720 1.7 -M * 3.2 -M * ----- ----- Basin Index (%) 947* 248 TONGUE RIVER BIG GOOSE 7990 2.6 .4 650* 3.8 1.7 224 BONE SPRINGS DIV 9350 3.0 1.4 214* 2.6 1.7 153 BURGESS JUNCTION 7880 2.7 .5 540* 3.6 1.5 240 DOME LAKE 8880 2.5 .9 278* 3.5 1.7 206 LITTLE GOOSE 8870 3.2 -M * 4.6 -M * SUCKER CREEK 8880 3.9 .7 557* 4.3 1.7 253 TIE CREEK 6870 1.7 .0 * 4.0 1.8 222 ----- ----- Basin Index (%) 421* 216 BELLE FOURCHE COLE CANYON 5910 2.3 .0 * 6.4 1.3 492 ----- ----- Basin Index (%) * 492 CHEYENNE RIVER BASIN BLIND PARK 6890 2.5 .0 * 6.4 1.4 457 NORTH RAPID CREEK 6130 4.0 .0 * 6.8 1.3 523 ----- ----- Basin Index (%) * 489 UPPER N. PLATTE ARAPAHO RIDGE 10960 2.2 1.2 183* 2.9 1.7 171 BLACKHALL MTN 9820 3.6 -M * 4.7 -M * COLUMBINE 9160 1.1 .0 * 3.0 1.6 188 DIVIDE PEAK 8880 2.4 .4 600* 4.6 1.9 242 JOE WRIGHT 10120 1.0 .7 143* 3.9 2.0 195 LAPRELE CREEK 8375 .5 .0 * 2.5 1.1 227 MED BOW 10500 3.9 -M * 4.8 -M * NORTH FRENCH CREEK 10130 -M .8 * -M 1.9 * NEVER SUMMER 10280 2.0 .8 250* 2.7 -M * OLD BATTLE 10000 3.4 1.2 283* 4.0 2.4 167 RAWAH 9020 1.5 .0 * 3.8 1.3 292 SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233 SAND LAKE 10050 3.8 1.1 345* 4.4 1.8 244 SOUTH BRUSH CREEK 8440 2.1 .0 * -M 1.4 * TOWER 10500 4.7 1.4 336* 5.2 2.4 217 WEBBER SPRINGS 9250 1.6 .2 800* 3.5 1.8 194 WILLOW CREEK PASS 9540 1.5 .3 500* 2.0 1.1 182 ZIRKEL 9340 -M .0 * 2.8 2.4 117 ----- ----- Basin Index (%) 389* 200 SWEETWATER DEER PARK 9700 2.2 .7 314* 2.6 1.6 162 LARSEN CREEK 9000 .0 -M * 1.8 -M * SOUTH PASS 9040 1.6 .1 1600* 2.4 1.2 200 ----- ----- Basin Index (%) 475* 179 LOWER N. PLATTE CASPER MTN. 7900 -M .1 * -M 1.6 * LAPRELE CREEK 8375 .5 .0 * 2.5 1.1 227 RENO HILL 8400 -M .5 * -M 1.4 * WINDY PEAK 7900 .3 .0 * 2.4 1.0 240 ----- ----- Basin Index (%) * 233 LARAMIE RIVER BROOKLYN LAKE 10240 1.5 .3 500* 2.3 1.4 164 CINNABAR PARK 9574 1.8 .2 900* 3.1 1.5 207 CROW CREEK 8330 .5 .0 * 2.4 1.2 200 DEADMAN HILL 10220 2.3 .9 256* 3.1 1.5 207 RAWAH 9020 1.5 .0 * 3.8 1.3 292 ROACH 9700 -M .3 * -M 1.4 * ----- ----- Basin Index (%) 543* 213 S. PLATTE BLACK MOUNTAIN 8920 1.3 -M * 2.4 -M * CROW CREEK 8330 .5 .0 * 2.4 1.2 200 DEADMAN HILL 10220 2.3 .9 256* 3.1 1.5 207 ----- ----- Basin Index (%) 311* 204 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.1 .0 * 3.0 1.0 300 DIVIDE PEAK 8880 2.4 .4 600* 4.6 1.9 242 ELK RIVER 8700 1.0 .0 * 2.8 1.5 187 LITTLE SNAKE RIVER 8915 2.0 .2 1000* 4.4 2.4 183 OLD BATTLE 10000 3.4 1.2 283* 4.0 2.4 167 SAGE CREEK BASIN 7850 .6 .0 * 2.8 1.2 233 SANDSTONE RS 8150 1.4 .0 * 3.1 1.2 258 WHISKEY PARK 8950 -M .0 * 4.9 1.6 306 ----- ----- Basin Index (%) 661* 224 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.1 .5 220* 1.4 1.0 140 BLIND BULL SUM 8650 .6 .3 200* 1.4 1.1 127 EAST RIM DIVIDE 7930 .1 .0 * 1.2 .7 171 ELKHART PARK G.S. 9400 1.1 .3 367* 1.6 1.0 160 GROS VENTRE SUMMIT 8750 2.1 .8 262* 2.0 1.0 200 GUNSIGHT PASS 9820 2.1 .3 700* 2.3 1.2 192 KENDALL R.S. 7740 .1 .0 * 1.2 .8 150 LOOMIS PARK 8240 .5 .0 * 1.4 .9 156 NEW FORK LAKE 8340 .3 .0 * .7 .7 100 POCKET CREEK 9360 2.2 -M * 2.4 -M * SNIDER BASIN 8060 .1 .0 * 1.0 .7 143 SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.1 91 TRIPLE PEAK 8500 .4 .1 400* 1.3 1.1 118 ----- ----- Basin Index (%) 346* 146 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 1.8 -M * BUCK PASTURE 9700 .8 -M * 2.2 -M * EF BLACKS FORK GS 9360 .7 -M * 1.8 -M * HAMS FORK 7840 .0 .0 * 1.4 .6 233 HEWINTA 9519 .0 .0 * 2.0 1.2 167 HICKERSON PARK 9145 .3 .0 * 1.5 1.0 150 HOLE-IN-ROCK 9150 .0 .0 * 1.2 1.1 109 INDIAN CREEK 9425 .7 .7 100* 1.4 1.1 127 KELLEY R.S. 8180 .6 .0 * 1.5 .9 167 SPIRIT LK 10235 1.0 -M * 2.0 -M * STEEL CREEK PARK 10200 .3 .5 60* 2.4 1.4 171 ----- ----- Basin Index (%) 158* 156 UPPER BEAR RIVER BEAR RIVER RS 8777 .1 -M * 1.7 -M * BUG LAKE 7950 1.0 .0 * 1.6 1.3 123 BURTS MILLER RANCH 8000 .2 -M * .8 -M * CHALK CREEK #1 8993 1.2 .3 400* 2.4 1.7 141 HAYDEN FORK 9212 .2 .0 * 2.5 1.4 179 KELLEY R.S. 8180 .6 .0 * 1.5 .9 167 LILY LAKE 9156 .8 .0 * 2.5 1.4 179 MONTE CRISTO 8960 .8 .0 * 1.8 1.5 120 SALT RIVER SUMMIT 7760 .0 .0 * 1.4 .9 156 ----- ----- Basin Index (%) 1533* 151 ----------------------------------------------------------------------------- -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.