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 16 , 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 .8 212 COTTONWOOD CREEK 7670 .8 .1 800 3.0 1.2 250 GRAND TARGHEE 9260 4.1 -M * 3.3 -M * GRANITE CREEK 6770 .2 .1 200 1.6 .7 229 GRASSY LAKE 7265 .2 .3 67 1.9 1.4 136 GROS VENTRE SUMMIT 8750 1.8 .6 300 1.8 .8 225 GUNSIGHT PASS 9820 1.7 -M * 2.5 -M * LEWIS LAKE DIVIDE 7850 .7 .1 700 2.2 1.2 183 PHILLIPS BENCH 8200 .8 .2 400 1.9 1.0 190 SALT RIVER SUMMIT 7760 .2 .0 2.2 .8 275 SNAKE RIVER STATION 6920 .1 .0 1.6 1.0 160 SPRING CREEK DIVIDE 9000 3.0 .3 1000 3.3 .9 367 THUMB DIVIDE 7980 1.2 .1 1200 2.8 .9 311 TOGWOTEE PASS 9580 3.2 1.0 320 2.9 1.2 242 TWO OCEAN PLATEAU 9240 3.0 1.2 250 2.2 1.3 169 WILLOW CREEK 8380 2.6 .4 650 4.2 1.6 262 ----- ----- Basin wide percent of average 389 225 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.2 1.3 169 1.6 .9 178 BLACK BEAR 8170 2.2 .8 275 2.6 1.3 200 CANYON 7870 .7 .2 350 1.1 .7 157 FISHER CREEK 9100 2.4 1.0 240 2.4 1.3 185 MADISON PLATEAU 7750 1.3 .4 325 2.4 1.1 218 NORTHEAST ENTRANCE 7350 .0 .1 0 1.2 .7 171 PARKER PEAK 9400 -M 1.2 * 1.3 1.1 118 SYLVAN LAKE 8420 1.1 .9 122 1.5 1.1 136 THUMB DIVIDE 7980 1.2 .1 1200 2.8 .9 311 TWO OCEAN PLATEAU 9240 3.0 1.2 250 2.2 1.3 169 WHISKEY CREEK 6800 .3 .1 300 1.6 .9 178 WHITE MILL 8700 2.0 .7 286 1.7 1.1 155 WOLVERINE 7650 .2 .1 200 1.1 .9 122 ----- ----- Basin wide percent of average 241 177 WIND RIVER BURROUGHS CREEK 8750 -M .3 * 2.1 .7 300 COLD SPRINGS 9630 1.9 .2 950 2.2 .8 275 DEER PARK 9700 3.0 .8 375 3.5 1.0 350 HOBBS PARK 10100 3.1 .7 443 -M .9 * LITTLE WARM 9370 1.6 .4 400 1.9 .8 237 SOUTH PASS 9040 2.6 .4 650 3.1 .8 388 ST. LAWRENCE ALT 8620 1.5 .1 1500 2.4 .8 300 TOGWOTEE PASS 9580 3.2 1.0 320 2.9 1.2 242 TOWNSEND CREEK 8700 2.3 .3 767 2.7 1.0 270 ----- ----- Basin wide percent of average 492 293 BIGHORN BASIN BALD MTN. 9380 2.4 1.5 160 2.0 1.1 182 BEAR TRAP MEADOW 8200 1.2 .2 600 1.6 .8 200 BLACKWATER 9780 2.9 1.5 193 2.3 1.2 192 BONE SPRINGS DIV 9350 1.6 1.3 123 1.6 1.2 133 EVENING STAR 9200 3.0 1.2 250 3.1 1.2 258 GRAVE SPRINGS 8550 1.9 .2 950 2.2 1.1 200 KIRWIN 9550 2.2 .8 275 1.7 .8 212 MARQUETTE 8760 2.9 .9 322 2.3 1.0 230 MIDDLE POWDER 7760 2.7 .6 450 2.4 1.2 200 OWL CREEK 8975 2.3 .3 767 1.6 .5 320 POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178 SHELL CREEK 9580 2.2 1.6 138 1.8 .9 200 SYLVAN LAKE 8420 1.1 .9 122 1.5 1.1 136 SYLVAN ROAD 7120 .0 .1 0 1.3 .7 186 TIMBER CREEK 7950 1.5 .1 1500 1.9 .7 271 YOUNTS PEAK 8350 1.3 .6 217 1.6 .9 178 ----- ----- Basin wide percent of average 250 199 SHOSHONE RIVER BLACKWATER 9780 2.9 1.5 193 2.3 1.2 192 EVENING STAR 9200 3.0 1.2 250 3.1 1.2 258 KIRWIN 9550 2.2 .8 275 1.7 .8 212 MARQUETTE 8760 2.9 .9 322 2.3 1.0 230 SYLVAN LAKE 8420 1.1 .9 122 1.5 1.1 136 SYLVAN ROAD 7120 .0 .1 0 1.3 .7 186 YOUNTS PEAK 8350 1.3 .6 217 1.6 .9 178 ----- ----- Basin wide percent of average 223 200 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .2 600 1.6 .8 200 BIG GOOSE 7990 1.2 .3 400 1.8 1.1 164 BONE SPRINGS DIV 9350 1.6 1.3 123 1.6 1.2 133 BURGESS JUNCTION 7880 1.8 .6 300 2.0 1.1 182 CLOUD PEAK RESERVOIR 9860 1.7 .4 425 2.3 1.3 177 DOME LAKE 8880 1.6 .7 229 2.1 1.2 175 GRAVE SPRINGS 8550 1.9 .2 950 2.2 1.1 200 HANSEN SAWMILL 8360 1.4 .2 700 1.6 .8 200 MIDDLE POWDER 7760 2.7 .6 450 2.4 1.2 200 POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178 SUCKER CREEK 8880 2.0 .5 400 2.0 1.1 182 TIE CREEK 6870 1.6 .0 2.3 1.3 177 ----- ----- Basin wide percent of average 338 179 BELLE FOURCHE BLIND PARK 6890 .2 .0 2.1 1.1 191 COLE CANYON 5910 .9 .2 450 2.8 .9 311 NORTH RAPID CREEK 6130 .2 .1 200 2.1 1.2 175 ----- ----- Basin wide percent of average 367 219 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 2.4 .9 267 DIVIDE PEAK 8880 .6 .7 86 2.8 1.2 233 ELK RIVER 8700 .1 .1 100 2.1 .9 233 JOE WRIGHT 10120 1.4 .8 175 2.3 1.5 153 NORTH FRENCH CREEK 10130 5.0 1.4 357 -M 1.3 * OLD BATTLE 10000 5.1 1.1 464 5.2 1.4 371 SAGE CREEK BASIN 7850 .0 .3 0 2.0 .7 286 SOUTH BRUSH CREEK 8440 .6 .2 300 3.0 1.1 273 TOWER 10500 5.4 1.0 540 5.2 1.5 347 WEBBER SPRINGS 9250 2.1 .5 420 3.9 1.3 300 WILLOW CREEK PASS 9540 .6 .3 200 1.3 .9 144 ----- ----- Basin wide percent of average 327 265 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.6 .9 400 -M 1.0 * CASPER MTN. 7900 .8 .6 133 2.2 1.1 200 DEADMAN HILL 10220 .5 .9 56 2.6 1.1 236 DEER PARK 9700 3.0 .8 375 3.5 1.0 350 LAPRELE CREEK 8375 .7 .3 233 1.7 .8 212 RENO HILL 8400 1.2 .7 171 1.8 1.1 164 ROACH 9700 1.9 .3 633 2.7 1.0 270 SAND LAKE 10050 4.9 1.3 377 4.8 1.3 369 SOUTH PASS 9040 2.6 .4 650 3.1 .8 388 WINDY PEAK 7900 .8 .1 800 1.7 .8 212 ----- ----- Basin wide percent of average 317 268 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.1 .7 157 DIVIDE PEAK 8880 .6 .7 86 2.8 1.2 233 OLD BATTLE 10000 5.1 1.1 464 5.2 1.4 371 SANDSTONE RS 8150 -M .1 * 1.4 .9 156 WHISKEY PARK 8950 1.9 .5 380 4.0 1.3 308 ----- ----- Basin wide percent of average 330 264 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 .4 700 2.7 .8 338 BLIND BULL SUM 8650 2.3 .4 575 1.9 .9 211 EAST RIM DIVIDE 7930 .2 .0 1.7 .6 283 ELKHART PARK G.S. 9400 2.3 .2 1150 2.2 .9 244 GROS VENTRE SUMMIT 8750 1.8 .6 300 1.8 .8 225 GUNSIGHT PASS 9820 1.7 -M * 2.5 -M * KENDALL R.S. 7740 .4 .0 1.8 .7 257 LOOMIS PARK 8240 1.1 .2 550 1.9 .8 237 NEW FORK LAKE 8340 .3 .0 1.4 .7 200 SNIDER BASIN 8060 1.3 .1 1300 2.3 .6 383 SPRING CREEK DIVIDE 9000 3.0 .3 1000 3.3 .9 367 TRIPLE PEAK 8500 2.3 .2 1150 3.3 .9 367 ----- ----- Basin wide percent of average 704 283 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 2.1 .6 350 HEWINTA 9519 .0 .4 0 1.0 1.0 100 HICKERSON PARK 9145 .0 .0 100 .7 .8 87 HOLE-IN-ROCK 9150 .0 .0 100 1.0 .8 125 INDIAN CREEK 9425 4.3 .4 1075 4.0 1.0 400 KELLEY R.S. 8180 1.7 .2 850 3.0 .8 375 STEEL CREEK PARK 10200 1.1 .8 138 1.1 1.0 110 ----- ----- Basin wide percent of average 394 215 UPPER BEAR RIVER BUG LAKE 7950 .2 .5 40 1.9 1.0 190 HAYDEN FORK 9212 .1 .4 25 1.9 1.0 190 KELLEY R.S. 8180 1.7 .2 850 3.0 .8 375 LILY LAKE 9156 .0 .4 0 1.1 1.0 110 MONTE CRISTO 8960 1.5 .7 214 2.0 1.2 167 SALT RIVER SUMMIT 7760 .2 .0 2.2 .8 275 TRIAL LAKE 9992 2.2 .8 275 2.4 1.2 200 ----- ----- Basin wide percent of average 190 207 ----------------------------------------------------------------------------- -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.