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 THURSDAY: OCTOBER 8 , 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 .0 100 .6 .4 150 COTTONWOOD CREEK 7670 .5 .0 1.1 .5 220 GRAND TARGHEE 9260 2.4 -M * 1.5 -M * GRANITE CREEK 6770 .4 .0 .5 .3 167 GRASSY LAKE 7265 .5 .0 .6 .6 100 GROS VENTRE SUMMIT 8750 .9 .2 450 .9 .4 225 GUNSIGHT PASS 9820 1.0 -M * 1.3 -M * LEWIS LAKE DIVIDE 7850 -M .0 * -M .5 * PHILLIPS BENCH 8200 .5 .0 .7 .4 175 SALT RIVER SUMMIT 7760 .4 .0 .7 .3 233 SNAKE RIVER STATION 6920 .0 .0 100 .5 .4 125 SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .4 300 THUMB DIVIDE 7980 .4 .0 1.1 .4 275 TOGWOTEE PASS 9580 1.6 .4 400 1.1 .5 220 TWO OCEAN PLATEAU 9240 1.2 .5 240 .6 .5 120 WILLOW CREEK 8380 1.7 .0 1.7 .7 243 ----- ----- Basin wide percent of average 336* 195 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.2 .8 150 .5 .4 125 BLACK BEAR 8170 .7 .5 140 .6 .5 120 CANYON 7870 .4 .1 400 .5 .3 167 FISHER CREEK 9100 .6 .5 120 .4 .5 80 MADISON PLATEAU 7750 .6 .3 200 .7 .5 140 NORTHEAST ENTRANCE 7350 .0 .0 100 .2 .3 67 PARKER PEAK 9400 -M .9 * .5 .5 100 SYLVAN LAKE 8420 .2 .5 40 .4 .5 80 THUMB DIVIDE 7980 .4 .0 1.1 .4 275 TWO OCEAN PLATEAU 9240 1.2 .5 240 .6 .5 120 WHISKEY CREEK 6800 .4 .1 400 .5 .3 167 WHITE MILL 8700 .4 .3 133 .1 .5 20 WOLVERINE 7650 .5 .1 500 .4 .4 100 ----- ----- Basin wide percent of average 168 116 WIND RIVER BURROUGHS CREEK 8750 1.3 .2 650 1.1 .3 367 COLD SPRINGS 9630 1.5 .3 500 1.7 .3 567 DEER PARK 9700 1.5 .6 250 1.8 .4 450 HOBBS PARK 10100 2.4 .6 400 -M .4 * LITTLE WARM 9370 1.0 .2 500 1.0 .3 333 SOUTH PASS 9040 1.4 .4 350 1.8 .3 600 ST. LAWRENCE ALT 8620 1.5 .2 750 1.9 .3 633 TOGWOTEE PASS 9580 1.6 .4 400 1.1 .5 220 TOWNSEND CREEK 8700 1.9 .3 633 2.2 .4 550 ----- ----- Basin wide percent of average 441 450 BIGHORN BASIN BALD MTN. 9380 1.5 1.0 150 1.1 .5 220 BEAR TRAP MEADOW 8200 1.1 .2 550 1.2 .3 400 BLACKWATER 9780 1.3 1.0 130 .9 .5 180 BONE SPRINGS DIV 9350 1.1 .8 138 1.0 .6 167 EVENING STAR 9200 1.4 .8 175 1.3 .5 260 GRAVE SPRINGS 8550 1.8 .4 450 1.9 .5 380 KIRWIN 9550 1.5 .6 250 1.0 .3 333 MARQUETTE 8760 2.1 .6 350 1.3 .4 325 MIDDLE POWDER 7760 2.7 .4 675 1.6 .5 320 OWL CREEK 8975 1.7 .4 425 1.1 .2 550 POWDER RIVER PASS 9480 1.0 .3 333 .9 .4 225 SHELL CREEK 9580 1.7 1.0 170 1.2 .4 300 SYLVAN LAKE 8420 .2 .5 40 .4 .5 80 SYLVAN ROAD 7120 .1 .0 .3 .3 100 TIMBER CREEK 7950 1.0 .3 333 1.2 .3 400 YOUNTS PEAK 8350 .7 .3 233 .6 .4 150 ----- ----- Basin wide percent of average 242 258 SHOSHONE RIVER BLACKWATER 9780 1.3 1.0 130 .9 .5 180 EVENING STAR 9200 1.4 .8 175 1.3 .5 260 KIRWIN 9550 1.5 .6 250 1.0 .3 333 MARQUETTE 8760 2.1 .6 350 1.3 .4 325 SYLVAN LAKE 8420 .2 .5 40 .4 .5 80 SYLVAN ROAD 7120 .1 .0 .3 .3 100 YOUNTS PEAK 8350 .7 .3 233 .6 .4 150 ----- ----- Basin wide percent of average 189 200 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 .2 550 1.2 .3 400 BIG GOOSE 7990 1.1 .1 1100 1.3 .5 260 BONE SPRINGS DIV 9350 1.1 .8 138 1.0 .6 167 BURGESS JUNCTION 7880 1.6 .5 320 1.3 .5 260 CLOUD PEAK RESERVOIR 9860 1.4 .2 700 1.3 .5 260 DOME LAKE 8880 1.2 .4 300 1.4 .5 280 GRAVE SPRINGS 8550 1.8 .4 450 1.9 .5 380 HANSEN SAWMILL 8360 1.4 .1 1400 1.2 .4 300 MIDDLE POWDER 7760 2.7 .4 675 1.6 .5 320 POWDER RIVER PASS 9480 1.0 .3 333 .9 .4 225 SUCKER CREEK 8880 1.7 .4 425 1.4 .5 280 TIE CREEK 6870 -M .1 * 1.9 .6 317 ----- ----- Basin wide percent of average 424 283 BELLE FOURCHE BLIND PARK 6890 1.0 .5 200 1.8 .5 360 COLE CANYON 5910 1.6 .0 2.4 .4 600 NORTH RAPID CREEK 6130 1.0 .0 1.8 .5 360 ----- ----- Basin wide percent of average 200* 429 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 1.0 .4 250 DIVIDE PEAK 8880 .5 .4 125 1.6 .5 320 ELK RIVER 8700 .1 .0 .9 .4 225 JOE WRIGHT 10120 .3 .3 100 .8 .6 133 NORTH FRENCH CREEK 10130 1.6 .6 267 1.7 .5 340 OLD BATTLE 10000 2.1 .6 350 2.0 .6 333 SAGE CREEK BASIN 7850 .0 .0 100 1.1 .3 367 SOUTH BRUSH CREEK 8440 .0 .1 0 1.4 .4 350 TOWER 10500 2.3 .4 575 2.0 .6 333 WEBBER SPRINGS 9250 .4 .2 200 1.3 .5 260 WILLOW CREEK PASS 9540 .2 .1 200 .6 .4 150 ----- ----- Basin wide percent of average 274 277 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .9 .5 180 1.0 .4 250 CASPER MTN. 7900 .4 .2 200 1.0 .4 250 DEADMAN HILL 10220 .0 .5 0 .5 .5 100 DEER PARK 9700 1.5 .6 250 1.8 .4 450 LAPRELE CREEK 8375 .1 .1 100 .5 .3 167 RENO HILL 8400 .4 .3 133 .6 .4 150 ROACH 9700 .3 .1 300 .9 .4 225 SAND LAKE 10050 1.7 .7 243 1.5 .5 300 SOUTH PASS 9040 1.4 .4 350 1.8 .3 600 WINDY PEAK 7900 .1 .0 .5 .3 167 ----- ----- Basin wide percent of average 197 259 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 1.9 .3 633 DIVIDE PEAK 8880 .5 .4 125 1.6 .5 320 OLD BATTLE 10000 2.1 .6 350 2.0 .6 333 SANDSTONE RS 8150 -M .0 * .7 .4 175 WHISKEY PARK 8950 .8 .2 400 1.4 .5 280 ----- ----- Basin wide percent of average 283 330 UPPER GREEN RIVER BIG SANDY OPENING 9080 .9 .1 900 .8 .3 267 BLIND BULL SUM 8650 1.0 .1 1000 .9 .4 225 EAST RIM DIVIDE 7930 .8 .0 1.1 .3 367 ELKHART PARK G.S. 9400 1.3 .0 1.1 .4 275 GROS VENTRE SUMMIT 8750 .9 .2 450 .9 .4 225 GUNSIGHT PASS 9820 1.0 -M * 1.3 -M * KENDALL R.S. 7740 .8 .0 .9 .3 300 LOOMIS PARK 8240 .9 .1 900 1.1 .3 367 NEW FORK LAKE 8340 .6 .0 1.0 .3 333 SNIDER BASIN 8060 .9 .0 .9 .3 300 SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .4 300 TRIPLE PEAK 8500 1.3 .0 1.5 .4 375 ----- ----- Basin wide percent of average 740* 300 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 .6 .2 300 HEWINTA 9519 .0 .2 0 .7 .4 175 HICKERSON PARK 9145 .0 .0 100 .6 .3 200 HOLE-IN-ROCK 9150 .0 .0 100 .7 .3 233 INDIAN CREEK 9425 1.2 .1 1200 1.3 .4 325 KELLEY R.S. 8180 .7 .0 .8 .3 267 STEEL CREEK PARK 10200 .4 .4 100 .8 .4 200 ----- ----- Basin wide percent of average 229 239 UPPER BEAR RIVER BUG LAKE 7950 .4 .3 133 .6 .4 150 HAYDEN FORK 9212 .0 .2 0 1.0 .4 250 KELLEY R.S. 8180 .7 .0 .8 .3 267 LILY LAKE 9156 .0 .3 0 .7 .4 175 MONTE CRISTO 8960 1.0 .4 250 1.0 .5 200 SALT RIVER SUMMIT 7760 .4 .0 .7 .3 233 TRIAL LAKE 9992 1.0 .5 200 1.0 .5 200 ----- ----- Basin wide percent of average 141 207 ----------------------------------------------------------------------------- -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.