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 MONDAY: OCTOBER 5 , 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 .3 .2 150 COTTONWOOD CREEK 7670 .8 .0 .4 .3 133 GRAND TARGHEE 9260 1.7 -M * .6 -M * GRANITE CREEK 6770 .3 .0 .2 .2 100 GRASSY LAKE 7265 .3 .0 .4 .3 133 GROS VENTRE SUMMIT 8750 .5 .1 500 .5 .2 250 GUNSIGHT PASS 9820 .2 -M * .6 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 .2 .2 100 PHILLIPS BENCH 8200 .1 .0 .2 .2 100 SALT RIVER SUMMIT 7760 .5 .0 .5 .2 250 SNAKE RIVER STATION 6920 .1 .0 .2 .2 100 SPRING CREEK DIVIDE 9000 .9 .0 .7 .2 350 THUMB DIVIDE 7980 .2 .0 .4 .2 200 TOGWOTEE PASS 9580 1.0 .2 500 .4 .3 133 TWO OCEAN PLATEAU 9240 .8 .2 400 .2 .3 67 WILLOW CREEK 8380 .9 .0 .6 .3 200 ----- ----- Basin wide percent of average 460* 158 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .6 .6 100 .1 .2 50 BLACK BEAR 8170 .3 .4 75 .3 .3 100 CANYON 7870 .2 .1 200 .2 .2 100 FISHER CREEK 9100 .4 .4 100 .2 .3 67 MADISON PLATEAU 7750 .3 .2 150 .4 .2 200 NORTHEAST ENTRANCE 7350 .0 .0 100 .1 .2 50 PARKER PEAK 9400 -M .7 * .1 .2 50 SYLVAN LAKE 8420 .1 .5 20 .1 .2 50 THUMB DIVIDE 7980 .2 .0 .4 .2 200 TWO OCEAN PLATEAU 9240 .8 .2 400 .2 .3 67 WHISKEY CREEK 6800 .3 .1 300 .3 .2 150 WHITE MILL 8700 .3 .3 100 .1 .3 33 WOLVERINE 7650 .3 .1 300 .2 .2 100 ----- ----- Basin wide percent of average 124 90 WIND RIVER BURROUGHS CREEK 8750 .7 .2 350 .6 .2 300 COLD SPRINGS 9630 1.3 .2 650 1.4 .2 700 DEER PARK 9700 1.2 .4 300 1.3 .2 650 HOBBS PARK 10100 2.0 .5 400 -M .2 * LITTLE WARM 9370 .6 .2 300 .5 .2 250 SOUTH PASS 9040 1.1 .3 367 1.4 .2 700 ST. LAWRENCE ALT 8620 -M .2 * 1.5 .2 750 TOGWOTEE PASS 9580 1.0 .2 500 .4 .3 133 TOWNSEND CREEK 8700 1.7 .2 850 1.8 .2 900 ----- ----- Basin wide percent of average 436 524 BIGHORN BASIN BALD MTN. 9380 1.1 .8 138 .5 .2 250 BEAR TRAP MEADOW 8200 .7 .2 350 .7 .2 350 BLACKWATER 9780 .9 .8 112 .5 .3 167 BONE SPRINGS DIV 9350 .4 .7 57 .4 .3 133 EVENING STAR 9200 .7 .7 100 .5 .2 250 GRAVE SPRINGS 8550 1.5 .2 750 -M .2 * KIRWIN 9550 1.2 .5 240 .7 .2 350 MARQUETTE 8760 1.6 .5 320 .6 .2 300 MIDDLE POWDER 7760 1.6 .3 533 .6 .3 200 OWL CREEK 8975 -M .3 * .9 .1 900 POWDER RIVER PASS 9480 .4 .4 100 .3 .2 150 SHELL CREEK 9580 .7 .9 78 .3 .2 150 SYLVAN LAKE 8420 .1 .5 20 .1 .2 50 SYLVAN ROAD 7120 .2 .0 .1 .2 50 TIMBER CREEK 7950 .7 .1 700 .8 .2 400 YOUNTS PEAK 8350 .2 .2 100 .3 .2 150 ----- ----- Basin wide percent of average 174 228 SHOSHONE RIVER BLACKWATER 9780 .9 .8 112 .5 .3 167 EVENING STAR 9200 .7 .7 100 .5 .2 250 KIRWIN 9550 1.2 .5 240 .7 .2 350 MARQUETTE 8760 1.6 .5 320 .6 .2 300 SYLVAN LAKE 8420 .1 .5 20 .1 .2 50 SYLVAN ROAD 7120 .2 .0 .1 .2 50 YOUNTS PEAK 8350 .2 .2 100 .3 .2 150 ----- ----- Basin wide percent of average 147 187 POWDER-TONGUE BEAR TRAP MEADOW 8200 .7 .2 350 .7 .2 350 BIG GOOSE 7990 .3 .1 300 .3 .2 150 BONE SPRINGS DIV 9350 .4 .7 57 .4 .3 133 BURGESS JUNCTION 7880 .9 .4 225 .5 .2 250 CLOUD PEAK RESERVOIR 9860 1.0 .2 500 .7 .3 233 DOME LAKE 8880 .3 .4 75 .3 .2 150 GRAVE SPRINGS 8550 1.5 .2 750 -M .2 * HANSEN SAWMILL 8360 .7 .2 350 .6 .2 300 MIDDLE POWDER 7760 1.6 .3 533 .6 .3 200 POWDER RIVER PASS 9480 .4 .4 100 .3 .2 150 SUCKER CREEK 8880 1.0 .3 333 .6 .3 200 TIE CREEK 6870 -M .1 * .9 .3 300 ----- ----- Basin wide percent of average 259 219 BELLE FOURCHE BLIND PARK 6890 .6 .0 1.1 .2 550 COLE CANYON 5910 1.0 .0 1.4 .2 700 NORTH RAPID CREEK 6130 .4 .0 .9 .2 450 ----- ----- Basin wide percent of average * 567 UPPER N. PLATTE RIVER COLUMBINE 9160 .2 .0 .8 .2 400 DIVIDE PEAK 8880 .6 .2 300 1.4 .2 700 ELK RIVER 8700 .0 .0 100 .6 .2 300 JOE WRIGHT 10120 .2 .2 100 .4 .3 133 NORTH FRENCH CREEK 10130 1.5 .3 500 1.3 .3 433 OLD BATTLE 10000 1.8 .4 450 1.4 .3 467 SAGE CREEK BASIN 7850 .2 .0 1.0 .1 1000 SOUTH BRUSH CREEK 8440 .2 .0 1.2 .2 600 TOWER 10500 1.8 .2 900 1.3 .3 433 WEBBER SPRINGS 9250 .3 .2 150 .9 .3 300 WILLOW CREEK PASS 9540 .1 .0 .4 .2 200 ----- ----- Basin wide percent of average 413 412 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .8 .3 267 .8 .2 400 CASPER MTN. 7900 .5 .1 500 .9 .2 450 DEADMAN HILL 10220 .0 .4 0 .3 .2 150 DEER PARK 9700 1.2 .4 300 1.3 .2 650 LAPRELE CREEK 8375 .2 .1 200 .5 .2 250 RENO HILL 8400 .5 .2 250 .6 .2 300 ROACH 9700 .4 .1 400 .8 .2 400 SAND LAKE 10050 1.4 .5 280 1.1 .2 550 SOUTH PASS 9040 1.1 .3 367 1.4 .2 700 WINDY PEAK 7900 .2 .0 .4 .2 200 ----- ----- Basin wide percent of average 254 405 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 .8 .1 800 DIVIDE PEAK 8880 .6 .2 300 1.4 .2 700 OLD BATTLE 10000 1.8 .4 450 1.4 .3 467 SANDSTONE RS 8150 -M .0 * .5 .2 250 WHISKEY PARK 8950 .6 .1 600 1.0 .3 333 ----- ----- Basin wide percent of average 429 464 UPPER GREEN RIVER BIG SANDY OPENING 9080 .7 .0 .6 .2 300 BLIND BULL SUM 8650 .6 .0 .6 .2 300 EAST RIM DIVIDE 7930 .4 .0 .7 .1 700 ELKHART PARK G.S. 9400 .9 .0 .6 .2 300 GROS VENTRE SUMMIT 8750 .5 .1 500 .5 .2 250 GUNSIGHT PASS 9820 .2 -M * .6 -M * KENDALL R.S. 7740 .5 .0 .5 .1 500 LOOMIS PARK 8240 .8 .0 .7 .2 350 NEW FORK LAKE 8340 .3 .0 .4 .2 200 SNIDER BASIN 8060 .9 .0 .8 .1 800 SPRING CREEK DIVIDE 9000 .9 .0 .7 .2 350 TRIPLE PEAK 8500 1.1 .0 1.1 .2 550 ----- ----- Basin wide percent of average 500* 379 LOWER GREEN RIVER HAMS FORK 7840 .6 .0 .6 .1 600 HEWINTA 9519 .2 .1 200 .6 .2 300 HICKERSON PARK 9145 .2 .0 .6 .2 300 HOLE-IN-ROCK 9150 .4 .0 .7 .2 350 INDIAN CREEK 9425 1.2 .1 1200 1.2 .2 600 KELLEY R.S. 8180 .7 .0 .6 .2 300 STEEL CREEK PARK 10200 .7 .4 175 .6 .2 300 ----- ----- Basin wide percent of average 350* 377 UPPER BEAR RIVER BUG LAKE 7950 .6 .2 300 .6 .2 300 HAYDEN FORK 9212 .3 .2 150 .7 .2 350 KELLEY R.S. 8180 .7 .0 .6 .2 300 LILY LAKE 9156 .3 .2 150 .5 .2 250 MONTE CRISTO 8960 1.3 .3 433 .7 .3 233 SALT RIVER SUMMIT 7760 .5 .0 .5 .2 250 TRIAL LAKE 9992 1.0 .4 250 .8 .2 400 ----- ----- Basin wide percent of average 269 293 ----------------------------------------------------------------------------- -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.