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 SUNDAY: OCTOBER 18 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .1 0 1.7 1.0 170 COTTONWOOD CREEK 7670 .6 .2 300 3.0 1.4 214 GRAND TARGHEE 9260 4.0 -M * 3.4 -M * GRANITE CREEK 6770 .1 .1 100 1.6 .8 200 GRASSY LAKE 7265 .1 .4 25 1.9 1.6 119 GROS VENTRE SUMMIT 8750 1.8 .7 257 1.8 1.0 180 GUNSIGHT PASS 9820 1.7 -M * 2.6 -M * LEWIS LAKE DIVIDE 7850 -M .2 * -M 1.4 * PHILLIPS BENCH 8200 .6 .3 200 1.9 1.1 173 SALT RIVER SUMMIT 7760 .2 .0 2.2 .9 244 SNAKE RIVER STATION 6920 .0 .0 100 1.6 1.1 145 SPRING CREEK DIVIDE 9000 3.0 .4 750 3.3 1.1 300 THUMB DIVIDE 7980 .6 .2 300 2.8 1.1 255 TOGWOTEE PASS 9580 3.2 1.2 267 2.9 1.4 207 TWO OCEAN PLATEAU 9240 2.9 1.4 207 2.1 1.5 140 WILLOW CREEK 8380 2.1 .6 350 4.2 1.8 233 ----- ----- Basin wide percent of average 268 196 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.3 1.5 153 1.8 1.0 180 BLACK BEAR 8170 2.0 .9 222 2.6 1.5 173 CANYON 7870 .6 .3 200 1.1 .8 138 FISHER CREEK 9100 2.4 1.1 218 2.5 1.5 167 MADISON PLATEAU 7750 1.1 .5 220 2.6 1.3 200 NORTHEAST ENTRANCE 7350 .0 .1 0 1.2 .8 150 PARKER PEAK 9400 -M 1.5 * 1.7 1.3 131 SYLVAN LAKE 8420 .8 1.0 80 1.5 1.3 115 THUMB DIVIDE 7980 .6 .2 300 2.8 1.1 255 TWO OCEAN PLATEAU 9240 2.9 1.4 207 2.1 1.5 140 WHISKEY CREEK 6800 .2 .1 200 1.6 1.0 160 WHITE MILL 8700 2.0 .8 250 1.8 1.3 138 WOLVERINE 7650 .1 .2 50 1.2 1.0 120 ----- ----- Basin wide percent of average 185 159 WIND RIVER BURROUGHS CREEK 8750 2.4 .3 800 2.2 .8 275 COLD SPRINGS 9630 2.0 .4 500 2.4 .9 267 DEER PARK 9700 3.0 1.1 273 3.7 1.1 336 HOBBS PARK 10100 3.1 1.1 282 -M 1.1 * LITTLE WARM 9370 1.6 .5 320 1.9 .9 211 SOUTH PASS 9040 2.7 .6 450 3.2 1.0 320 ST. LAWRENCE ALT 8620 1.6 .3 533 2.5 .9 278 TOGWOTEE PASS 9580 3.2 1.2 267 2.9 1.4 207 TOWNSEND CREEK 8700 2.3 .5 460 2.9 1.1 264 ----- ----- Basin wide percent of average 365 268 BIGHORN BASIN BALD MTN. 9380 2.4 1.7 141 2.2 1.3 169 BEAR TRAP MEADOW 8200 1.3 .3 433 1.7 .9 189 BLACKWATER 9780 3.0 1.8 167 2.4 1.4 171 BONE SPRINGS DIV 9350 1.7 1.5 113 1.9 1.4 136 EVENING STAR 9200 3.0 1.4 214 3.2 1.4 229 GRAVE SPRINGS 8550 1.9 .4 475 2.3 1.2 192 KIRWIN 9550 2.2 1.0 220 1.8 .9 200 MARQUETTE 8760 2.9 1.2 242 2.6 1.2 217 MIDDLE POWDER 7760 2.5 .8 312 2.6 1.4 186 OWL CREEK 8975 2.4 .5 480 1.8 .6 300 POWDER RIVER PASS 9480 1.5 .6 250 1.7 1.1 155 SHELL CREEK 9580 2.3 1.7 135 1.8 1.1 164 SYLVAN LAKE 8420 .8 1.0 80 1.5 1.3 115 SYLVAN ROAD 7120 .0 .2 0 1.3 .9 144 TIMBER CREEK 7950 1.4 .6 233 1.8 .8 225 YOUNTS PEAK 8350 1.2 .6 200 1.5 1.0 150 ----- ----- Basin wide percent of average 199 179 SHOSHONE RIVER BLACKWATER 9780 3.0 1.8 167 2.4 1.4 171 EVENING STAR 9200 3.0 1.4 214 3.2 1.4 229 KIRWIN 9550 2.2 1.0 220 1.8 .9 200 MARQUETTE 8760 2.9 1.2 242 2.6 1.2 217 SYLVAN LAKE 8420 .8 1.0 80 1.5 1.3 115 SYLVAN ROAD 7120 .0 .2 0 1.3 .9 144 YOUNTS PEAK 8350 1.2 .6 200 1.5 1.0 150 ----- ----- Basin wide percent of average 182 177 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.3 .3 433 1.7 .9 189 BIG GOOSE 7990 1.3 .4 325 2.0 1.2 167 BONE SPRINGS DIV 9350 1.7 1.5 113 1.9 1.4 136 BURGESS JUNCTION 7880 1.9 .8 237 2.2 1.2 183 CLOUD PEAK RESERVOIR 9860 1.7 .7 243 2.3 1.4 164 DOME LAKE 8880 1.7 1.0 170 2.3 1.4 164 GRAVE SPRINGS 8550 1.9 .4 475 2.3 1.2 192 HANSEN SAWMILL 8360 1.4 .4 350 1.8 1.0 180 MIDDLE POWDER 7760 2.5 .8 312 2.6 1.4 186 POWDER RIVER PASS 9480 1.5 .6 250 1.7 1.1 155 SUCKER CREEK 8880 2.1 .7 300 2.1 1.3 162 TIE CREEK 6870 1.3 .3 433 2.4 1.5 160 ----- ----- Basin wide percent of average 257 169 BELLE FOURCHE BLIND PARK 6890 .1 .1 100 2.1 1.3 162 COLE CANYON 5910 .4 .4 100 2.9 1.0 290 NORTH RAPID CREEK 6130 .3 .2 150 2.2 1.4 157 ----- ----- Basin wide percent of average 114 195 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .1 0 2.4 1.1 218 DIVIDE PEAK 8880 .3 .8 37 2.8 1.4 200 ELK RIVER 8700 .1 .2 50 2.0 1.1 182 JOE WRIGHT 10120 1.3 1.0 130 2.2 1.7 129 NORTH FRENCH CREEK 10130 4.9 1.5 327 5.1 1.5 340 OLD BATTLE 10000 5.0 1.3 385 5.3 1.7 312 SAGE CREEK BASIN 7850 .0 .4 0 2.0 .8 250 SOUTH BRUSH CREEK 8440 .2 .2 100 3.0 1.3 231 TOWER 10500 5.2 1.2 433 5.2 1.7 306 WEBBER SPRINGS 9250 2.0 .6 333 3.9 1.5 260 WILLOW CREEK PASS 9540 .8 .4 200 1.3 1.0 130 ----- ----- Basin wide percent of average 257 238 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.6 1.0 360 -M 1.2 * CASPER MTN. 7900 .9 .7 129 2.2 1.2 183 DEADMAN HILL 10220 .4 1.1 36 2.6 1.3 200 DEER PARK 9700 3.0 1.1 273 3.7 1.1 336 LAPRELE CREEK 8375 .7 .3 233 1.8 .9 200 RENO HILL 8400 1.2 .8 150 2.0 1.2 167 ROACH 9700 1.7 .3 567 2.6 1.2 217 SAND LAKE 10050 4.8 1.5 320 4.9 1.5 327 SOUTH PASS 9040 2.7 .6 450 3.2 1.0 320 WINDY PEAK 7900 .8 .1 800 2.0 .9 222 ----- ----- Basin wide percent of average 264 243 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.2 .9 133 DIVIDE PEAK 8880 .3 .8 37 2.8 1.4 200 OLD BATTLE 10000 5.0 1.3 385 5.3 1.7 312 SANDSTONE RS 8150 -M .1 * 1.4 1.1 127 WHISKEY PARK 8950 1.7 .6 283 4.0 1.5 267 ----- ----- Basin wide percent of average 259 223 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 .5 540 2.7 .9 300 BLIND BULL SUM 8650 2.2 .5 440 1.9 1.0 190 EAST RIM DIVIDE 7930 .1 .1 100 1.8 .7 257 ELKHART PARK G.S. 9400 2.3 .3 767 2.2 1.0 220 GROS VENTRE SUMMIT 8750 1.8 .7 257 1.8 1.0 180 GUNSIGHT PASS 9820 1.7 -M * 2.6 -M * KENDALL R.S. 7740 .2 .0 1.8 .8 225 LOOMIS PARK 8240 .8 .3 267 1.8 .9 200 NEW FORK LAKE 8340 .1 .1 100 1.5 .8 188 SNIDER BASIN 8060 1.2 .2 600 2.2 .7 314 SPRING CREEK DIVIDE 9000 3.0 .4 750 3.3 1.1 300 TRIPLE PEAK 8500 2.1 .3 700 3.2 1.1 291 ----- ----- Basin wide percent of average 479 242 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 2.1 .7 300 HEWINTA 9519 .0 .4 0 1.0 1.2 83 HICKERSON PARK 9145 .1 .1 100 .7 .9 78 HOLE-IN-ROCK 9150 .0 .1 0 1.0 .9 111 INDIAN CREEK 9425 4.1 .5 820 4.1 1.2 342 KELLEY R.S. 8180 1.5 .3 500 3.0 1.0 300 STEEL CREEK PARK 10200 .9 .8 112 1.0 1.2 83 ----- ----- Basin wide percent of average 300 182 UPPER BEAR RIVER BUG LAKE 7950 .2 .6 33 2.0 1.2 167 HAYDEN FORK 9212 .1 .4 25 1.9 1.2 158 KELLEY R.S. 8180 1.5 .3 500 3.0 1.0 300 LILY LAKE 9156 .2 .5 40 1.1 1.2 92 MONTE CRISTO 8960 .9 .8 112 2.3 1.4 164 SALT RIVER SUMMIT 7760 .2 .0 2.2 .9 244 TRIAL LAKE 9992 2.2 .9 244 2.4 1.4 171 ----- ----- Basin wide percent of average 146 180 ----------------------------------------------------------------------------- -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 1961-90. 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.