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 9 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .0 .7 .4 175 COTTONWOOD CREEK 7670 .4 .0 1.1 .6 183 GRAND TARGHEE 9260 2.5 -M * 1.6 -M * GRANITE CREEK 6770 .3 .0 .6 .4 150 GRASSY LAKE 7265 .7 .0 .9 .7 129 GROS VENTRE SUMMIT 8750 .9 .3 300 .9 .4 225 GUNSIGHT PASS 9820 .9 -M * 1.3 -M * LEWIS LAKE DIVIDE 7850 -M .0 * -M .6 * PHILLIPS BENCH 8200 .5 .0 .8 .5 160 SALT RIVER SUMMIT 7760 .2 .0 .6 .4 150 SNAKE RIVER STATION 6920 .1 .0 .7 .5 140 SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .5 240 THUMB DIVIDE 7980 .6 .0 1.2 .4 300 TOGWOTEE PASS 9580 1.8 .5 360 1.4 .6 233 TWO OCEAN PLATEAU 9240 1.4 .6 233 .8 .6 133 WILLOW CREEK 8380 1.7 .1 1700 1.8 .8 225 ----- ----- Basin wide percent of average 387* 187 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.2 .9 133 .6 .4 150 BLACK BEAR 8170 .8 .5 160 .8 .6 133 CANYON 7870 .4 .1 400 .5 .3 167 FISHER CREEK 9100 .7 .6 117 .6 .6 100 MADISON PLATEAU 7750 .7 .4 175 .8 .5 160 NORTHEAST ENTRANCE 7350 .0 .0 100 .3 .4 75 PARKER PEAK 9400 -M .9 * .6 .6 100 SYLVAN LAKE 8420 .5 .6 83 .6 .6 100 THUMB DIVIDE 7980 .6 .0 1.2 .4 300 TWO OCEAN PLATEAU 9240 1.4 .6 233 .8 .6 133 WHISKEY CREEK 6800 .4 .1 400 .6 .4 150 WHITE MILL 8700 .5 .4 125 .3 .6 50 WOLVERINE 7650 .5 .1 500 .6 .4 150 ----- ----- Basin wide percent of average 165 130 WIND RIVER BURROUGHS CREEK 8750 1.5 .2 750 1.3 .4 325 COLD SPRINGS 9630 1.4 .2 700 1.7 .4 425 DEER PARK 9700 1.5 .7 214 1.8 .5 360 HOBBS PARK 10100 2.5 .6 417 -M .4 * LITTLE WARM 9370 1.0 .2 500 1.0 .4 250 SOUTH PASS 9040 1.5 .4 375 1.8 .4 450 ST. LAWRENCE ALT 8620 1.4 .2 700 1.9 .4 475 TOGWOTEE PASS 9580 1.8 .5 360 1.4 .6 233 TOWNSEND CREEK 8700 1.9 .2 950 2.2 .5 440 ----- ----- Basin wide percent of average 453 364 BIGHORN BASIN BALD MTN. 9380 1.8 1.1 164 1.3 .6 217 BEAR TRAP MEADOW 8200 1.2 .1 1200 1.3 .4 325 BLACKWATER 9780 1.6 1.1 145 1.2 .6 200 BONE SPRINGS DIV 9350 1.2 .9 133 1.1 .6 183 EVENING STAR 9200 1.5 .9 167 1.4 .6 233 GRAVE SPRINGS 8550 1.8 .4 450 1.9 .6 317 KIRWIN 9550 1.6 .6 267 1.1 .4 275 MARQUETTE 8760 2.6 .7 371 1.6 .5 320 MIDDLE POWDER 7760 2.7 .4 675 1.7 .6 283 OWL CREEK 8975 1.8 .4 450 1.2 .3 400 POWDER RIVER PASS 9480 1.1 .4 275 .9 .5 180 SHELL CREEK 9580 1.7 1.1 155 1.3 .5 260 SYLVAN LAKE 8420 .5 .6 83 .6 .6 100 SYLVAN ROAD 7120 .1 .0 .5 .4 125 TIMBER CREEK 7950 1.1 .2 550 1.3 .4 325 YOUNTS PEAK 8350 .8 .3 267 .7 .4 175 ----- ----- Basin wide percent of average 250 239 SHOSHONE RIVER BLACKWATER 9780 1.6 1.1 145 1.2 .6 200 EVENING STAR 9200 1.5 .9 167 1.4 .6 233 KIRWIN 9550 1.6 .6 267 1.1 .4 275 MARQUETTE 8760 2.6 .7 371 1.6 .5 320 SYLVAN LAKE 8420 .5 .6 83 .6 .6 100 SYLVAN ROAD 7120 .1 .0 .5 .4 125 YOUNTS PEAK 8350 .8 .3 267 .7 .4 175 ----- ----- Basin wide percent of average 205 203 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .1 1200 1.3 .4 325 BIG GOOSE 7990 1.0 .2 500 1.3 .5 260 BONE SPRINGS DIV 9350 1.2 .9 133 1.1 .6 183 BURGESS JUNCTION 7880 1.7 .5 340 1.4 .5 280 CLOUD PEAK RESERVOIR 9860 1.5 .3 500 1.5 .6 250 DOME LAKE 8880 1.3 .5 260 1.4 .6 233 GRAVE SPRINGS 8550 1.8 .4 450 1.9 .6 317 HANSEN SAWMILL 8360 1.3 .1 1300 1.3 .4 325 MIDDLE POWDER 7760 2.7 .4 675 1.7 .6 283 POWDER RIVER PASS 9480 1.1 .4 275 .9 .5 180 SUCKER CREEK 8880 1.8 .4 450 1.5 .6 250 TIE CREEK 6870 1.8 .1 1800 1.9 .6 317 ----- ----- Basin wide percent of average 428 265 BELLE FOURCHE BLIND PARK 6890 .9 .5 180 1.8 .6 300 COLE CANYON 5910 1.4 .0 2.5 .4 625 NORTH RAPID CREEK 6130 .8 .0 1.7 .6 283 ----- ----- Basin wide percent of average 180* 375 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 1.0 .5 200 DIVIDE PEAK 8880 .4 .4 100 1.5 .5 300 ELK RIVER 8700 .1 .0 .9 .4 225 JOE WRIGHT 10120 .5 .4 125 .9 .7 129 NORTH FRENCH CREEK 10130 1.6 .7 229 1.7 .6 283 OLD BATTLE 10000 2.0 .6 333 1.9 .6 317 SAGE CREEK BASIN 7850 .0 .0 100 1.2 .3 400 SOUTH BRUSH CREEK 8440 .0 .1 0 1.3 .5 260 TOWER 10500 2.6 .5 520 2.2 .7 314 WEBBER SPRINGS 9250 .3 .3 100 1.3 .6 217 WILLOW CREEK PASS 9540 .2 .1 200 .6 .4 150 ----- ----- Basin wide percent of average 245 250 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .8 .5 160 1.1 .5 220 CASPER MTN. 7900 .4 .3 133 1.1 .5 220 DEADMAN HILL 10220 .0 .5 0 .8 .5 160 DEER PARK 9700 1.5 .7 214 1.8 .5 360 LAPRELE CREEK 8375 .2 .1 200 .6 .4 150 RENO HILL 8400 .6 .4 150 .6 .5 120 ROACH 9700 .5 .1 500 1.1 .5 220 SAND LAKE 10050 1.6 .8 200 1.5 .6 250 SOUTH PASS 9040 1.5 .4 375 1.8 .4 450 WINDY PEAK 7900 .2 .0 .6 .4 150 ----- ----- Basin wide percent of average 187 229 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.0 .3 333 DIVIDE PEAK 8880 .4 .4 100 1.5 .5 300 OLD BATTLE 10000 2.0 .6 333 1.9 .6 317 SANDSTONE RS 8150 -M .0 * .7 .4 175 WHISKEY PARK 8950 .8 .2 400 1.4 .6 233 ----- ----- Basin wide percent of average 267 271 UPPER GREEN RIVER BIG SANDY OPENING 9080 .9 .2 450 .8 .4 200 BLIND BULL SUM 8650 .9 .1 900 .9 .4 225 EAST RIM DIVIDE 7930 .7 .0 1.1 .3 367 ELKHART PARK G.S. 9400 1.3 .0 1.1 .5 220 GROS VENTRE SUMMIT 8750 .9 .3 300 .9 .4 225 GUNSIGHT PASS 9820 .9 -M * 1.3 -M * KENDALL R.S. 7740 .7 .0 1.0 .3 333 LOOMIS PARK 8240 .9 .1 900 1.1 .4 275 NEW FORK LAKE 8340 .6 .0 .9 .4 225 SNIDER BASIN 8060 .8 .0 .9 .3 300 SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .5 240 TRIPLE PEAK 8500 1.3 .0 1.5 .5 300 ----- ----- Basin wide percent of average 514* 259 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 .6 .3 200 HEWINTA 9519 -M .2 * .7 .5 140 HICKERSON PARK 9145 .0 .0 100 .6 .4 150 HOLE-IN-ROCK 9150 .0 .0 100 .7 .4 175 INDIAN CREEK 9425 1.0 .2 500 1.2 .5 240 KELLEY R.S. 8180 .6 .0 .6 .4 150 STEEL CREEK PARK 10200 .1 .5 20 .8 .5 160 ----- ----- Basin wide percent of average 157 173 UPPER BEAR RIVER BUG LAKE 7950 .5 .3 167 .6 .5 120 HAYDEN FORK 9212 .0 .2 0 1.0 .5 200 KELLEY R.S. 8180 .6 .0 .6 .4 150 LILY LAKE 9156 .0 .3 0 .7 .5 140 MONTE CRISTO 8960 .9 .4 225 .9 .6 150 SALT RIVER SUMMIT 7760 .2 .0 .6 .4 150 TRIAL LAKE 9992 1.0 .5 200 1.0 .6 167 ----- ----- Basin wide percent of average 141 154 ----------------------------------------------------------------------------- -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.