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 TUESDAY: OCTOBER 6 , 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 .6 .2 300 COTTONWOOD CREEK 7670 .7 .0 1.0 .3 333 GRAND TARGHEE 9260 2.2 -M * 1.1 -M * GRANITE CREEK 6770 .4 .0 .5 .2 250 GRASSY LAKE 7265 .4 .0 .4 .4 100 GROS VENTRE SUMMIT 8750 .8 .1 800 .8 .3 267 GUNSIGHT PASS 9820 .9 -M * 1.1 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 .2 .3 67 PHILLIPS BENCH 8200 .5 .0 .6 .3 200 SALT RIVER SUMMIT 7760 .4 .0 .6 .2 300 SNAKE RIVER STATION 6920 .0 .0 100 .4 .3 133 SPRING CREEK DIVIDE 9000 1.2 .0 1.1 .3 367 THUMB DIVIDE 7980 .4 .0 .8 .2 400 TOGWOTEE PASS 9580 1.5 .2 750 1.0 .3 333 TWO OCEAN PLATEAU 9240 1.0 .3 333 .3 .4 75 WILLOW CREEK 8380 1.9 .0 1.6 .5 320 ----- ----- Basin wide percent of average 550* 236 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .7 .7 100 .1 .2 50 BLACK BEAR 8170 .6 .4 150 .5 .3 167 CANYON 7870 .3 .1 300 .3 .2 150 FISHER CREEK 9100 .4 .5 80 .2 .4 50 MADISON PLATEAU 7750 .5 .3 167 .5 .3 167 NORTHEAST ENTRANCE 7350 .0 .0 100 .1 .2 50 PARKER PEAK 9400 -M .8 * .2 .3 67 SYLVAN LAKE 8420 .1 .6 17 .2 .3 67 THUMB DIVIDE 7980 .4 .0 .8 .2 400 TWO OCEAN PLATEAU 9240 1.0 .3 333 .3 .4 75 WHISKEY CREEK 6800 .2 .1 200 .4 .2 200 WHITE MILL 8700 .3 .3 100 .0 .3 0 WOLVERINE 7650 .3 .0 .1 .3 33 ----- ----- Basin wide percent of average 124 103 WIND RIVER BURROUGHS CREEK 8750 1.0 .2 500 .9 .2 450 COLD SPRINGS 9630 1.4 .3 467 1.6 .2 800 DEER PARK 9700 1.5 .6 250 1.7 .3 567 HOBBS PARK 10100 2.3 .6 383 2.0 .2 1000 LITTLE WARM 9370 .9 .2 450 .9 .2 450 SOUTH PASS 9040 1.4 .4 350 1.6 .2 800 ST. LAWRENCE ALT 8620 1.4 .3 467 1.8 .2 900 TOGWOTEE PASS 9580 1.5 .2 750 1.0 .3 333 TOWNSEND CREEK 8700 1.9 .3 633 2.0 .3 667 ----- ----- Basin wide percent of average 429 643 BIGHORN BASIN BALD MTN. 9380 1.3 .9 144 .8 .3 267 BEAR TRAP MEADOW 8200 .9 .2 450 .9 .2 450 BLACKWATER 9780 1.0 .9 111 .6 .3 200 BONE SPRINGS DIV 9350 .7 .7 100 .6 .4 150 EVENING STAR 9200 .9 .7 129 .7 .3 233 GRAVE SPRINGS 8550 1.8 .3 600 1.8 .3 600 KIRWIN 9550 1.4 .5 280 .8 .2 400 MARQUETTE 8760 2.1 .6 350 1.1 .3 367 MIDDLE POWDER 7760 2.5 .4 625 1.2 .3 400 OWL CREEK 8975 1.5 .3 500 1.0 .2 500 POWDER RIVER PASS 9480 .7 .4 175 .6 .3 200 SHELL CREEK 9580 1.0 .9 111 .7 .3 233 SYLVAN LAKE 8420 .1 .6 17 .2 .3 67 SYLVAN ROAD 7120 .0 .0 100 .2 .2 100 TIMBER CREEK 7950 1.0 .2 500 .9 .2 450 YOUNTS PEAK 8350 .5 .2 250 .5 .3 167 ----- ----- Basin wide percent of average 223 286 SHOSHONE RIVER BLACKWATER 9780 1.0 .9 111 .6 .3 200 EVENING STAR 9200 .9 .7 129 .7 .3 233 KIRWIN 9550 1.4 .5 280 .8 .2 400 MARQUETTE 8760 2.1 .6 350 1.1 .3 367 SYLVAN LAKE 8420 .1 .6 17 .2 .3 67 SYLVAN ROAD 7120 .0 .0 100 .2 .2 100 YOUNTS PEAK 8350 .5 .2 250 .5 .3 167 ----- ----- Basin wide percent of average 171 216 POWDER-TONGUE BEAR TRAP MEADOW 8200 .9 .2 450 .9 .2 450 BIG GOOSE 7990 .6 .1 600 .7 .3 233 BONE SPRINGS DIV 9350 .7 .7 100 .6 .4 150 BURGESS JUNCTION 7880 1.1 .4 275 .8 .3 267 CLOUD PEAK RESERVOIR 9860 1.1 .2 550 .9 .4 225 DOME LAKE 8880 .6 .4 150 .7 .3 233 GRAVE SPRINGS 8550 1.8 .3 600 1.8 .3 600 HANSEN SAWMILL 8360 .9 .1 900 .8 .2 400 MIDDLE POWDER 7760 2.5 .4 625 1.2 .3 400 POWDER RIVER PASS 9480 .7 .4 175 .6 .3 200 SUCKER CREEK 8880 1.3 .4 325 .9 .3 300 TIE CREEK 6870 1.2 .1 1200 1.3 .4 325 ----- ----- Basin wide percent of average 362 303 BELLE FOURCHE BLIND PARK 6890 .8 .2 400 1.4 .3 467 COLE CANYON 5910 1.6 .0 2.3 .3 767 NORTH RAPID CREEK 6130 .6 .0 1.2 .3 400 ----- ----- Basin wide percent of average 400* 544 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 .8 .3 267 DIVIDE PEAK 8880 .5 .3 167 1.6 .3 533 ELK RIVER 8700 .0 .0 100 .8 .3 267 JOE WRIGHT 10120 .5 .2 250 .7 .4 175 NORTH FRENCH CREEK 10130 1.6 .4 400 1.6 .3 533 OLD BATTLE 10000 2.1 .4 525 1.7 .4 425 SAGE CREEK BASIN 7850 .0 .0 100 1.1 .2 550 SOUTH BRUSH CREEK 8440 .0 .0 100 1.3 .3 433 TOWER 10500 2.3 .3 767 1.8 .4 450 WEBBER SPRINGS 9250 .4 .2 200 1.2 .3 400 WILLOW CREEK PASS 9540 .0 .0 100 .3 .2 150 ----- ----- Basin wide percent of average 411 379 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .8 .4 200 1.1 .3 367 CASPER MTN. 7900 .4 .1 400 .9 .3 300 DEADMAN HILL 10220 .0 .4 0 .4 .3 133 DEER PARK 9700 1.5 .6 250 1.7 .3 567 LAPRELE CREEK 8375 .1 .1 100 .5 .2 250 RENO HILL 8400 .4 .2 200 .5 .3 167 ROACH 9700 .3 .1 300 .8 .3 267 SAND LAKE 10050 1.7 .6 283 1.3 .3 433 SOUTH PASS 9040 1.4 .4 350 1.6 .2 800 WINDY PEAK 7900 .2 .0 .4 .2 200 ----- ----- Basin wide percent of average 228 341 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 .9 .2 450 DIVIDE PEAK 8880 .5 .3 167 1.6 .3 533 OLD BATTLE 10000 2.1 .4 525 1.7 .4 425 SANDSTONE RS 8150 -M .0 * .7 .2 350 WHISKEY PARK 8950 .8 .1 800 1.3 .3 433 ----- ----- Basin wide percent of average 425 443 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .1 800 .7 .2 350 BLIND BULL SUM 8650 .9 .0 .8 .2 400 EAST RIM DIVIDE 7930 .9 .0 1.0 .2 500 ELKHART PARK G.S. 9400 1.2 .0 1.0 .3 333 GROS VENTRE SUMMIT 8750 .8 .1 800 .8 .3 267 GUNSIGHT PASS 9820 .9 -M * 1.1 -M * KENDALL R.S. 7740 .8 .0 .9 .2 450 LOOMIS PARK 8240 1.0 .0 1.0 .2 500 NEW FORK LAKE 8340 .6 .0 .8 .2 400 SNIDER BASIN 8060 .8 .0 .7 .2 350 SPRING CREEK DIVIDE 9000 1.2 .0 1.1 .3 367 TRIPLE PEAK 8500 1.4 .0 1.4 .3 467 ----- ----- Basin wide percent of average 800* 392 LOWER GREEN RIVER HAMS FORK 7840 .4 .0 .6 .2 300 HEWINTA 9519 -M .1 * .6 .3 200 HICKERSON PARK 9145 -M .0 * .5 .2 250 HOLE-IN-ROCK 9150 .0 .0 100 .6 .2 300 INDIAN CREEK 9425 1.3 .1 1300 1.2 .3 400 KELLEY R.S. 8180 .7 .0 .6 .2 300 STEEL CREEK PARK 10200 .7 .4 175 .7 .3 233 ----- ----- Basin wide percent of average 400* 282 UPPER BEAR RIVER BUG LAKE 7950 .6 .2 300 .6 .3 200 HAYDEN FORK 9212 .4 .2 200 .9 .3 300 KELLEY R.S. 8180 .7 .0 .6 .2 300 LILY LAKE 9156 .2 .2 100 .7 .3 233 MONTE CRISTO 8960 .9 .3 300 .8 .3 267 SALT RIVER SUMMIT 7760 .4 .0 .6 .2 300 TRIAL LAKE 9992 1.0 .4 250 1.0 .3 333 ----- ----- Basin wide percent of average 238 274 ----------------------------------------------------------------------------- -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.