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 SATURDAY: OCTOBER 10 , 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 .8 .0 1.5 .7 214 GRAND TARGHEE 9260 2.9 -M * 2.0 -M * GRANITE CREEK 6770 .4 .0 .7 .4 175 GRASSY LAKE 7265 .6 .0 .8 .8 100 GROS VENTRE SUMMIT 8750 1.3 .3 433 1.3 .5 260 GUNSIGHT PASS 9820 1.3 -M * 1.7 -M * LEWIS LAKE DIVIDE 7850 -M .0 * -M .6 * PHILLIPS BENCH 8200 .7 .0 1.0 .5 200 SALT RIVER SUMMIT 7760 .5 .0 .9 .5 180 SNAKE RIVER STATION 6920 .0 .0 100 .8 .5 160 SPRING CREEK DIVIDE 9000 1.7 .0 1.7 .5 340 THUMB DIVIDE 7980 .5 .0 1.2 .5 240 TOGWOTEE PASS 9580 2.3 .5 460 1.9 .7 271 TWO OCEAN PLATEAU 9240 1.5 .7 214 .8 .7 114 WILLOW CREEK 8380 2.3 .1 2300 2.5 .9 278 ----- ----- Basin wide percent of average 462* 208 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.2 .9 133 .3 .5 60 BLACK BEAR 8170 .9 .5 180 .9 .7 129 CANYON 7870 .5 .1 500 .5 .4 125 FISHER CREEK 9100 .7 .6 117 .2 .7 29 MADISON PLATEAU 7750 .7 .4 175 .8 .6 133 NORTHEAST ENTRANCE 7350 .1 .1 100 .3 .4 75 PARKER PEAK 9400 -M .9 * .5 .6 83 SYLVAN LAKE 8420 .3 .6 50 .7 .6 117 THUMB DIVIDE 7980 .5 .0 1.2 .5 240 TWO OCEAN PLATEAU 9240 1.5 .7 214 .8 .7 114 WHISKEY CREEK 6800 .4 .1 400 .5 .5 100 WHITE MILL 8700 .7 .4 175 .0 .7 0 WOLVERINE 7650 .6 .1 600 .4 .5 80 ----- ----- Basin wide percent of average 169 96 WIND RIVER BURROUGHS CREEK 8750 1.6 .2 800 1.5 .4 375 COLD SPRINGS 9630 1.7 .2 850 2.0 .4 500 DEER PARK 9700 -M .7 * 2.2 .5 440 HOBBS PARK 10100 2.8 .6 467 -M .5 * LITTLE WARM 9370 1.3 .2 650 1.4 .4 350 SOUTH PASS 9040 1.7 .4 425 2.1 .4 525 ST. LAWRENCE ALT 8620 1.6 .2 800 2.1 .4 525 TOGWOTEE PASS 9580 2.3 .5 460 1.9 .7 271 TOWNSEND CREEK 8700 2.2 .3 733 2.5 .5 500 ----- ----- Basin wide percent of average 585 424 BIGHORN BASIN BALD MTN. 9380 1.8 1.2 150 1.3 .7 186 BEAR TRAP MEADOW 8200 1.2 .2 600 1.4 .5 280 BLACKWATER 9780 1.7 1.1 155 1.1 .7 157 BONE SPRINGS DIV 9350 1.4 .9 156 1.1 .7 157 EVENING STAR 9200 1.5 .9 167 1.4 .7 200 GRAVE SPRINGS 8550 1.8 .5 360 2.1 .6 350 KIRWIN 9550 1.7 .7 243 1.2 .4 300 MARQUETTE 8760 2.6 .7 371 1.8 .6 300 MIDDLE POWDER 7760 2.7 .5 540 1.8 .7 257 OWL CREEK 8975 2.0 .4 500 1.5 .3 500 POWDER RIVER PASS 9480 1.4 .4 350 1.2 .6 200 SHELL CREEK 9580 2.0 1.3 154 1.8 .6 300 SYLVAN LAKE 8420 .3 .6 50 .7 .6 117 SYLVAN ROAD 7120 .2 .0 .6 .4 150 TIMBER CREEK 7950 1.4 .2 700 1.5 .4 375 YOUNTS PEAK 8350 .9 .4 225 .7 .5 140 ----- ----- Basin wide percent of average 244 236 SHOSHONE RIVER BLACKWATER 9780 1.7 1.1 155 1.1 .7 157 EVENING STAR 9200 1.5 .9 167 1.4 .7 200 KIRWIN 9550 1.7 .7 243 1.2 .4 300 MARQUETTE 8760 2.6 .7 371 1.8 .6 300 SYLVAN LAKE 8420 .3 .6 50 .7 .6 117 SYLVAN ROAD 7120 .2 .0 .6 .4 150 YOUNTS PEAK 8350 .9 .4 225 .7 .5 140 ----- ----- Basin wide percent of average 198 192 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .2 600 1.4 .5 280 BIG GOOSE 7990 1.0 .2 500 1.3 .6 217 BONE SPRINGS DIV 9350 1.4 .9 156 1.1 .7 157 BURGESS JUNCTION 7880 1.7 .5 340 1.4 .6 233 CLOUD PEAK RESERVOIR 9860 1.6 .4 400 1.4 .7 200 DOME LAKE 8880 1.3 .6 217 1.8 .7 257 GRAVE SPRINGS 8550 1.8 .5 360 2.1 .6 350 HANSEN SAWMILL 8360 1.5 .2 750 1.4 .5 280 MIDDLE POWDER 7760 2.7 .5 540 1.8 .7 257 POWDER RIVER PASS 9480 1.4 .4 350 1.2 .6 200 SUCKER CREEK 8880 1.8 .5 360 1.6 .7 229 TIE CREEK 6870 1.6 .1 1600 1.7 .7 243 ----- ----- Basin wide percent of average 380 239 BELLE FOURCHE BLIND PARK 6890 .8 .3 267 1.8 .6 300 COLE CANYON 5910 1.3 .2 650 2.7 .5 540 NORTH RAPID CREEK 6130 .6 .1 600 1.5 .7 214 ----- ----- Basin wide percent of average 450 333 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 1.3 .5 260 DIVIDE PEAK 8880 .8 .4 200 1.9 .6 317 ELK RIVER 8700 .1 .0 1.1 .5 220 JOE WRIGHT 10120 1.2 .4 300 1.2 .9 133 NORTH FRENCH CREEK 10130 2.9 .8 362 2.9 .7 414 OLD BATTLE 10000 2.8 .7 400 2.6 .7 371 SAGE CREEK BASIN 7850 .1 .0 1.4 .4 350 SOUTH BRUSH CREEK 8440 .7 .1 700 2.0 .6 333 TOWER 10500 3.0 .5 600 2.6 .8 325 WEBBER SPRINGS 9250 1.0 .3 333 1.9 .7 271 WILLOW CREEK PASS 9540 .2 .1 200 .7 .5 140 ----- ----- Basin wide percent of average 382 284 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 1.8 .5 360 1.9 .6 317 CASPER MTN. 7900 .4 .3 133 1.2 .5 240 DEADMAN HILL 10220 .1 .6 17 1.3 .6 217 DEER PARK 9700 -M .7 * 2.2 .5 440 LAPRELE CREEK 8375 .2 .1 200 .8 .4 200 RENO HILL 8400 .7 .4 175 .7 .6 117 ROACH 9700 .9 .1 900 1.5 .6 250 SAND LAKE 10050 2.6 .8 325 2.4 .7 343 SOUTH PASS 9040 1.7 .4 425 2.1 .4 525 WINDY PEAK 7900 .4 .0 1.0 .4 250 ----- ----- Basin wide percent of average 263 285 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.0 .4 250 DIVIDE PEAK 8880 .8 .4 200 1.9 .6 317 OLD BATTLE 10000 2.8 .7 400 2.6 .7 371 SANDSTONE RS 8150 -M .0 * 1.0 .5 200 WHISKEY PARK 8950 1.3 .3 433 2.2 .7 314 ----- ----- Basin wide percent of average 350 300 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.4 .2 700 1.2 .4 300 BLIND BULL SUM 8650 1.6 .2 800 1.2 .5 240 EAST RIM DIVIDE 7930 1.1 .0 1.4 .3 467 ELKHART PARK G.S. 9400 1.5 .1 1500 1.3 .5 260 GROS VENTRE SUMMIT 8750 1.3 .3 433 1.3 .5 260 GUNSIGHT PASS 9820 1.3 -M * 1.7 -M * KENDALL R.S. 7740 .9 .0 1.2 .4 300 LOOMIS PARK 8240 1.3 .1 1300 1.4 .5 280 NEW FORK LAKE 8340 .7 .0 .8 .4 200 SNIDER BASIN 8060 1.1 .0 1.2 .3 400 SPRING CREEK DIVIDE 9000 1.7 .0 1.7 .5 340 TRIPLE PEAK 8500 1.8 .1 1800 2.0 .5 400 ----- ----- Basin wide percent of average 890 306 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 .7 .3 233 HEWINTA 9519 .0 .2 0 .7 .6 117 HICKERSON PARK 9145 .1 .0 .7 .4 175 HOLE-IN-ROCK 9150 .3 .0 .7 .4 175 INDIAN CREEK 9425 1.3 .2 650 1.4 .5 280 KELLEY R.S. 8180 .7 .0 .9 .5 180 STEEL CREEK PARK 10200 .1 .5 20 .7 .6 117 ----- ----- Basin wide percent of average 156* 176 UPPER BEAR RIVER BUG LAKE 7950 .5 .3 167 .7 .6 117 HAYDEN FORK 9212 .1 .2 50 1.0 .6 167 KELLEY R.S. 8180 .7 .0 .9 .5 180 LILY LAKE 9156 .1 .3 33 .7 .5 140 MONTE CRISTO 8960 1.0 .4 250 .9 .7 129 SALT RIVER SUMMIT 7760 .5 .0 .9 .5 180 TRIAL LAKE 9992 1.1 .6 183 1.0 .7 143 ----- ----- Basin wide percent of average 156 149 ----------------------------------------------------------------------------- -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.