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 17 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .1 100* 3.0 1.0 300 COTTONWOOD CREEK 7670 .1 .2 50* 4.2 1.4 300 GRAND TARGHEE 9260 2.6 -M * 4.6 -M * GRANITE CREEK 6770 .1 .1 100* 2.2 .8 275 GRASSY LAKE 7265 .1 .4 25* 5.1 1.6 319 GROS VENTRE SUMMIT 8750 .2 .7 29* 1.8 1.0 180 GUNSIGHT PASS 9820 .9 -M * 2.3 -M * LEWIS LAKE DIVIDE 7850 .4 .2 200* 4.0 1.4 286 PHILLIPS BENCH 8200 .0 .3 0* 2.4 1.1 218 SALT RIVER SUMMIT 7760 .1 .0 * 2.1 .9 233 SNAKE RIVER STATION 6920 .1 .0 * 3.3 1.1 300 SPRING CREEK DIVIDE 9000 1.4 .4 350* 3.1 1.1 282 THUMB DIVIDE 7980 .1 .2 50* 2.2 1.1 200 TOGWOTEE PASS 9580 1.4 1.2 117* 2.7 1.4 193 TWO OCEAN PLATEAU 9240 3.1 1.4 221* 3.3 1.5 220 WILLOW CREEK 8380 .7 .6 117* 4.7 1.8 261 ----- ----- Basin wide percent of average 136* 256 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.2 1.5 80* 2.0 1.0 200 BLACK BEAR 8170 1.9 .9 211* 4.8 1.6 300 CANYON 7870 .0 .3 0* 1.5 .8 188 FISHER CREEK 9100 1.5 1.1 136* 3.4 1.5 227 MADISON PLATEAU 7750 .0 .5 0* 3.6 1.3 277 NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 .8 200 PARKER PEAK 9400 .8 1.5 53* 2.0 1.3 154 SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269 THUMB DIVIDE 7980 .1 .2 50* 2.2 1.1 200 TWO OCEAN PLATEAU 9240 3.1 1.4 221* 3.3 1.5 220 WHISKEY CREEK 6800 .1 .1 100* 3.2 1.0 320 WHITE MILL 8700 .8 .8 100* 2.7 1.3 208 WOLVERINE 7650 .0 .2 0* 1.6 1.0 160 ----- ----- Basin wide percent of average 103* 228 WIND RIVER BURROUGHS CREEK 8750 .0 .3 0* 1.2 .8 150 CASTLE CREEK 8400 .0 -M * 1.1 -M * COLD SPRINGS 9630 .3 .4 75* 1.5 .9 167 DEER PARK 9700 .7 1.1 64* 2.3 1.1 209 HOBBS PARK 10100 1.7 1.1 155* 2.3 1.1 209 LITTLE WARM 9370 .0 .5 0* 1.3 .9 144 SOUTH PASS 9040 .7 .6 117* 2.1 1.0 210 ST. LAWRENCE ALT 8620 .0 .3 0* 1.0 .9 111 TOGWOTEE PASS 9580 1.4 1.2 117* 2.7 1.4 193 TOWNSEND CREEK 8700 .2 .5 40* 2.4 1.1 218 ----- ----- Basin wide percent of average 83* 183 BIGHORN BASIN BALD MTN. 9380 2.9 1.7 171* 3.1 1.3 238 BEAR TRAP MEADOW 8200 .5 .3 167* 1.1 .9 122 BLACKWATER 9780 2.8 1.8 156* 2.9 1.4 207 BONE SPRINGS DIV 9350 3.0 1.5 200* 3.5 1.4 250 EVENING STAR 9200 .4 1.4 29* 2.7 1.4 193 GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133 KIRWIN 9550 1.5 1.0 150* 2.7 .9 300 MARQUETTE 8760 .3 -M * 3.0 1.2 250 MIDDLE POWDER 7760 .5 .8 63* 3.2 1.4 229 OWL CREEK 8975 .9 .5 180* 1.3 .6 217 POWDER RIVER PASS 9480 1.6 .6 267* 2.5 1.1 227 SHELL CREEK 9580 3.5 1.7 206 3.1 1.1 282 SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269 SYLVAN ROAD 7120 .0 .2 0* 1.6 .9 178 TIMBER CREEK 7950 .1 .6 17 3.3 .8 413 YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220 ----- ----- Basin wide percent of average 131* 231 SHOSHONE RIVER BLACKWATER 9780 2.8 1.8 156* 2.9 1.4 207 EVENING STAR 9200 .4 1.4 29* 2.7 1.4 193 KIRWIN 9550 1.5 1.0 150* 2.7 .9 300 MARQUETTE 8760 .3 -M * 3.0 1.2 250 SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269 SYLVAN ROAD 7120 .0 .2 0* 1.6 .9 178 YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220 ----- ----- Basin wide percent of average 85* 230 POWDER-TONGUE BEAR TRAP MEADOW 8200 .5 .3 167* 1.1 .9 122 BIG GOOSE 7990 1.5 .4 375* 3.6 1.2 300 BONE SPRINGS DIV 9350 3.0 1.5 200* 3.5 1.4 250 BURGESS JUNCTION 7880 1.4 .8 175* 3.4 1.2 283 CLOUD PEAK RESERVOIR 9860 1.4 .7 200* 3.0 1.4 214 DOME LAKE 8880 2.1 1.0 210* 3.9 1.4 279 GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133 HANSEN SAWMILL 8360 .0 .4 0* 1.5 1.0 150 LITTLE GOOSE 8870 1.5 -M * 4.0 -M * MIDDLE POWDER 7760 .5 .8 63* 3.2 1.4 229 POWDER RIVER PASS 9480 1.6 .6 267* 2.5 1.1 227 SOLDIER PARK 8720 .0 -M * 2.2 -M * SUCKER CREEK 8880 2.4 .7 343* 3.4 1.3 262 TIE CREEK 6870 .1 .3 33* 4.0 1.5 267 ----- ----- Basin wide percent of average 189* 231 BELLE FOURCHE BLIND PARK 6890 .1 .1 100* .9 1.3 69 COLE CANYON 5910 .0 .4 0* 1.2 1.0 120 NORTH RAPID CREEK 6130 .0 .2 0* .5 1.4 36 ----- ----- Basin wide percent of average 14* 70 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 1.4 -M * 2.6 -M * CINNABAR PARK 9574 .3 .4 75* 1.9 1.1 173 COLUMBINE 9160 .1 .1 100* 1.4 1.1 127 DIVIDE PEAK 8880 .1 .8 13* 1.9 1.4 136 ELK RIVER 8700 .0 .2 0* 1.4 1.1 127 JOE WRIGHT 10120 .0 1.0 0* 1.6 1.7 94 NORTH FRENCH CREEK 10130 1.2 1.5 80* 2.3 1.5 153 OLD BATTLE 10000 1.4 1.3 108* 2.4 1.7 141 SAGE CREEK BASIN 7850 .0 .4 0* 1.4 .8 175 SOUTH BRUSH CREEK 8440 .1 .2 50* 1.6 1.3 123 TOWER 10500 .0 1.2 0* 2.2 1.7 129 WEBBER SPRINGS 9250 .1 .6 17* 2.2 1.5 147 WILLOW CREEK PASS 9540 .0 .4 0* 4.9 1.0 490 ----- ----- Basin wide percent of average 41* 158 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .2 1.0 20* 2.1 1.2 175 CASPER MTN. 7900 1.2 .7 171* 3.4 1.2 283 DEADMAN HILL 10220 .7 1.1 64* 1.5 1.3 115 DEER PARK 9700 .7 1.1 64* 2.3 1.1 209 LAPRELE CREEK 8375 .0 .3 0* 1.8 .9 200 RENO HILL 8400 1.1 .8 138* 2.4 1.2 200 ROACH 9700 .7 .3 233* 2.0 1.2 167 SAND LAKE 10050 1.8 1.5 120* 2.0 1.5 133 SOUTH PASS 9040 .7 .6 117* 2.1 1.0 210 WINDY PEAK 7900 .1 .1 100* 1.1 .9 122 ----- ----- Basin wide percent of average 96* 180 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 * 1.0 .9 111 DIVIDE PEAK 8880 .1 .8 13* 1.9 1.4 136 OLD BATTLE 10000 1.4 1.3 108* 2.4 1.7 141 SANDSTONE RS 8150 .0 .1 0* .9 1.1 82 WHISKEY PARK 8950 .1 .6 17* 1.9 1.5 127 ----- ----- Basin wide percent of average 61* 123 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .5 160* 1.9 .9 211 BLIND BULL SUM 8650 .7 .5 140* 2.0 1.0 200 EAST RIM DIVIDE 7930 .3 .1 300* 1.9 .7 271 ELKHART PARK G.S. 9400 .8 .3 267* 2.5 1.0 250 GROS VENTRE SUMMIT 8750 .2 .7 29* 1.8 1.0 180 GUNSIGHT PASS 9820 .9 -M * 2.3 -M * KENDALL R.S. 7740 .1 .0 * 2.1 .8 263 LOOMIS PARK 8240 .2 .3 67* 2.3 .9 256 NEW FORK LAKE 8340 .4 .1 400* 2.4 .8 300 POCKET CREEK 9360 1.2 -M * 2.5 -M * SNIDER BASIN 8060 .1 .2 50* 1.6 .7 229 SPRING CREEK DIVIDE 9000 1.4 .4 350* 3.1 1.1 282 TRIPLE PEAK 8500 .2 .3 67* 2.8 1.1 255 ----- ----- Basin wide percent of average 153* 244 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 * 2.4 .7 343 HEWINTA 9519 .2 .4 50* 2.6 1.2 217 HICKERSON PARK 9145 -M .1 * -M .9 * HOLE-IN-ROCK 9150 .4 .1 400* 2.8 .9 311 INDIAN CREEK 9425 1.9 .5 380* 2.9 1.2 242 KELLEY R.S. 8180 .5 .3 167* 2.8 1.0 280 STEEL CREEK PARK 10200 -M .8 * -M 1.2 * ----- ----- Basin wide percent of average 246* 270 UPPER BEAR RIVER BUG LAKE 7950 -M .6 * -M 1.2 * HAYDEN FORK 9212 .2 .4 50* 3.6 1.2 300 KELLEY R.S. 8180 .5 .3 167* 2.8 1.0 280 LILY LAKE 9156 .3 .5 60* 2.5 1.2 208 MONTE CRISTO 8960 -M .8 * -M 1.4 * SALT RIVER SUMMIT 7760 .1 .0 * 2.1 .9 233 TRIAL LAKE 9992 .7 .9 78* 2.3 1.4 164 ----- ----- Basin wide percent of average 86* 233 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average 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 Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average 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. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -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.