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 SUNDAY: OCTOBER 11 , 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 .9 .5 180 COTTONWOOD CREEK 7670 .7 .0 1.5 .8 188 GRAND TARGHEE 9260 2.9 -M * 2.1 -M * GRANITE CREEK 6770 .4 .0 .7 .5 140 GRASSY LAKE 7265 .6 .0 .8 .9 89 GROS VENTRE SUMMIT 8750 1.4 .3 467 1.4 .6 233 GUNSIGHT PASS 9820 1.5 -M * 1.9 -M * LEWIS LAKE DIVIDE 7850 .6 .0 .7 .7 100 PHILLIPS BENCH 8200 .7 .0 1.0 .6 167 SALT RIVER SUMMIT 7760 .5 .0 .9 .5 180 SNAKE RIVER STATION 6920 .0 .0 100 .8 .6 133 SPRING CREEK DIVIDE 9000 1.6 .1 1600 1.7 .6 283 THUMB DIVIDE 7980 .6 .0 1.3 .6 217 TOGWOTEE PASS 9580 2.3 .6 383 2.0 .8 250 TWO OCEAN PLATEAU 9240 1.5 .8 188 .9 .8 112 WILLOW CREEK 8380 2.3 .2 1150 2.5 1.0 250 ----- ----- Basin wide percent of average 455* 180 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.4 1.0 140 .5 .6 83 BLACK BEAR 8170 1.0 .6 167 .9 .8 112 CANYON 7870 .5 .1 500 .8 .4 200 FISHER CREEK 9100 .8 .7 114 .4 .8 50 MADISON PLATEAU 7750 .8 .4 200 .9 .7 129 NORTHEAST ENTRANCE 7350 .1 .1 100 .4 .5 80 PARKER PEAK 9400 -M .9 * .7 .7 100 SYLVAN LAKE 8420 .4 .6 67 .7 .7 100 THUMB DIVIDE 7980 .6 .0 1.3 .6 217 TWO OCEAN PLATEAU 9240 1.5 .8 188 .9 .8 112 WHISKEY CREEK 6800 .5 .1 500 .7 .5 140 WHITE MILL 8700 .7 .5 140 .2 .7 29 WOLVERINE 7650 .6 .1 600 .5 .6 83 ----- ----- Basin wide percent of average 166 106 WIND RIVER BURROUGHS CREEK 8750 1.7 .2 850 1.6 .5 320 COLD SPRINGS 9630 1.7 .2 850 2.0 .5 400 DEER PARK 9700 -M .7 * 2.3 .6 383 HOBBS PARK 10100 2.8 .6 467 -M .6 * LITTLE WARM 9370 1.3 .2 650 1.5 .5 300 SOUTH PASS 9040 1.8 .4 450 2.1 .5 420 ST. LAWRENCE ALT 8620 1.6 .2 800 2.2 .5 440 TOGWOTEE PASS 9580 2.3 .6 383 2.0 .8 250 TOWNSEND CREEK 8700 2.2 .2 1100 2.6 .6 433 ----- ----- Basin wide percent of average 592 362 BIGHORN BASIN BALD MTN. 9380 1.8 1.2 150 1.4 .8 175 BEAR TRAP MEADOW 8200 1.2 .1 1200 1.5 .5 300 BLACKWATER 9780 1.8 1.2 150 1.2 .8 150 BONE SPRINGS DIV 9350 1.4 1.0 140 1.2 .8 150 EVENING STAR 9200 1.6 1.0 160 1.7 .7 243 GRAVE SPRINGS 8550 1.9 .4 475 2.2 .7 314 KIRWIN 9550 1.8 .7 257 1.3 .5 260 MARQUETTE 8760 2.6 .7 371 1.9 .6 317 MIDDLE POWDER 7760 2.7 .5 540 1.9 .8 237 OWL CREEK 8975 2.0 .4 500 1.5 .3 500 POWDER RIVER PASS 9480 1.5 .4 375 1.2 .6 200 SHELL CREEK 9580 2.0 1.3 154 1.8 .6 300 SYLVAN LAKE 8420 .4 .6 67 .7 .7 100 SYLVAN ROAD 7120 .2 .0 .6 .5 120 TIMBER CREEK 7950 1.4 .2 700 1.7 .5 340 YOUNTS PEAK 8350 1.0 .4 250 .7 .6 117 ----- ----- Basin wide percent of average 249 225 SHOSHONE RIVER BLACKWATER 9780 1.8 1.2 150 1.2 .8 150 EVENING STAR 9200 1.6 1.0 160 1.7 .7 243 KIRWIN 9550 1.8 .7 257 1.3 .5 260 MARQUETTE 8760 2.6 .7 371 1.9 .6 317 SYLVAN LAKE 8420 .4 .6 67 .7 .7 100 SYLVAN ROAD 7120 .2 .0 .6 .5 120 YOUNTS PEAK 8350 1.0 .4 250 .7 .6 117 ----- ----- Basin wide percent of average 200 184 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .1 1200 1.5 .5 300 BIG GOOSE 7990 1.0 .2 500 1.4 .7 200 BONE SPRINGS DIV 9350 1.4 1.0 140 1.2 .8 150 BURGESS JUNCTION 7880 1.7 .5 340 1.5 .7 214 CLOUD PEAK RESERVOIR 9860 1.6 .4 400 1.6 .8 200 DOME LAKE 8880 1.3 .6 217 1.8 .8 225 GRAVE SPRINGS 8550 1.9 .4 475 2.2 .7 314 HANSEN SAWMILL 8360 1.5 .1 1500 1.4 .5 280 MIDDLE POWDER 7760 2.7 .5 540 1.9 .8 237 POWDER RIVER PASS 9480 1.5 .4 375 1.2 .6 200 SUCKER CREEK 8880 1.8 .5 360 1.6 .7 229 TIE CREEK 6870 1.6 .0 1.8 .8 225 ----- ----- Basin wide percent of average 374 227 BELLE FOURCHE BLIND PARK 6890 .7 .2 350 1.8 .7 257 COLE CANYON 5910 1.3 .2 650 2.7 .6 450 NORTH RAPID CREEK 6130 .7 .1 700 1.7 .8 212 ----- ----- Basin wide percent of average 540 295 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 1.2 .6 200 DIVIDE PEAK 8880 1.0 .5 200 2.1 .7 300 ELK RIVER 8700 .1 .1 100 1.1 .6 183 JOE WRIGHT 10120 .7 .5 140 1.2 1.0 120 NORTH FRENCH CREEK 10130 3.1 .9 344 3.1 .8 388 OLD BATTLE 10000 2.9 .8 362 2.8 .9 311 SAGE CREEK BASIN 7850 .1 .1 100 1.4 .4 350 SOUTH BRUSH CREEK 8440 .7 .1 700 2.1 .7 300 TOWER 10500 3.0 .6 500 2.6 .9 289 WEBBER SPRINGS 9250 1.1 .3 367 2.0 .8 250 WILLOW CREEK PASS 9540 .3 .2 150 .7 .5 140 ----- ----- Basin wide percent of average 317 257 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 2.0 .6 333 2.1 .6 350 CASPER MTN. 7900 .6 .4 150 1.4 .6 233 DEADMAN HILL 10220 .2 .6 33 1.6 .7 229 DEER PARK 9700 -M .7 * 2.3 .6 383 LAPRELE CREEK 8375 .3 .2 150 1.0 .5 200 RENO HILL 8400 .8 .5 160 .9 .6 150 ROACH 9700 1.1 .2 550 1.7 .6 283 SAND LAKE 10050 2.9 .9 322 2.7 .8 338 SOUTH PASS 9040 1.8 .4 450 2.1 .5 420 WINDY PEAK 7900 .6 .0 1.2 .5 240 ----- ----- Basin wide percent of average 255 283 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 1.0 .4 250 DIVIDE PEAK 8880 1.0 .5 200 2.1 .7 300 OLD BATTLE 10000 2.9 .8 362 2.8 .9 311 SANDSTONE RS 8150 -M .0 * 1.0 .6 167 WHISKEY PARK 8950 1.4 .3 467 2.3 .8 287 ----- ----- Basin wide percent of average 331 271 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.4 .2 700 1.2 .5 240 BLIND BULL SUM 8650 1.6 .2 800 1.3 .5 260 EAST RIM DIVIDE 7930 1.1 .0 1.5 .4 375 ELKHART PARK G.S. 9400 1.6 .1 1600 1.3 .6 217 GROS VENTRE SUMMIT 8750 1.4 .3 467 1.4 .6 233 GUNSIGHT PASS 9820 1.5 -M * 1.9 -M * KENDALL R.S. 7740 1.0 .0 1.4 .4 350 LOOMIS PARK 8240 1.2 .1 1200 1.4 .5 280 NEW FORK LAKE 8340 .8 .0 1.1 .4 275 SNIDER BASIN 8060 1.1 .0 1.2 .4 300 SPRING CREEK DIVIDE 9000 1.6 .1 1600 1.7 .6 283 TRIPLE PEAK 8500 1.8 .1 1800 2.1 .6 350 ----- ----- Basin wide percent of average 964 284 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 .7 .4 175 HEWINTA 9519 .0 .2 0 .7 .7 100 HICKERSON PARK 9145 .1 .0 .7 .5 140 HOLE-IN-ROCK 9150 .2 .0 .7 .5 140 INDIAN CREEK 9425 1.3 .2 650 1.5 .6 250 KELLEY R.S. 8180 .7 .0 .8 .5 160 STEEL CREEK PARK 10200 .1 .6 17 .7 .6 117 ----- ----- Basin wide percent of average 140* 153 UPPER BEAR RIVER BUG LAKE 7950 .5 .4 125 .7 .6 117 HAYDEN FORK 9212 .1 .3 33 1.0 .6 167 KELLEY R.S. 8180 .7 .0 .8 .5 160 LILY LAKE 9156 .1 .3 33 .7 .6 117 MONTE CRISTO 8960 1.1 .5 220 1.0 .8 125 SALT RIVER SUMMIT 7760 .5 .0 .9 .5 180 TRIAL LAKE 9992 1.0 .6 167 1.0 .7 143 ----- ----- Basin wide percent of average 133 142 ----------------------------------------------------------------------------- -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.