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 13 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .5 .0 1.1 .7 157 COTTONWOOD CREEK 7670 1.0 .0 1.9 .9 211 GRAND TARGHEE 9260 3.1 -M * 2.5 -M * GRANITE CREEK 6770 .7 .0 1.2 .6 200 GRASSY LAKE 7265 .9 .1 900 1.1 1.1 100 GROS VENTRE SUMMIT 8750 1.5 .4 375 1.6 .7 229 GUNSIGHT PASS 9820 1.5 -M * 2.1 -M * LEWIS LAKE DIVIDE 7850 .8 .0 1.1 .9 122 PHILLIPS BENCH 8200 .8 .1 800 1.2 .7 171 SALT RIVER SUMMIT 7760 .8 .0 1.3 .6 217 SNAKE RIVER STATION 6920 .2 .0 1.0 .8 125 SPRING CREEK DIVIDE 9000 2.0 .2 1000 2.2 .7 314 THUMB DIVIDE 7980 1.0 .1 1000 1.7 .7 243 TOGWOTEE PASS 9580 2.6 .8 325 2.2 .9 244 TWO OCEAN PLATEAU 9240 1.8 .9 200 1.1 1.0 110 WILLOW CREEK 8380 2.3 .3 767 2.7 1.3 208 ----- ----- Basin wide percent of average 445 184 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.8 1.1 164 .9 .7 129 BLACK BEAR 8170 1.2 .6 200 1.1 1.0 110 CANYON 7870 .7 .2 350 1.0 .6 167 FISHER CREEK 9100 1.1 .8 138 1.1 1.0 110 MADISON PLATEAU 7750 1.2 .4 300 1.4 .9 156 NORTHEAST ENTRANCE 7350 .2 .0 .4 .6 67 PARKER PEAK 9400 -M 1.0 * 1.1 .9 122 SYLVAN LAKE 8420 .9 .6 150 .9 .9 100 THUMB DIVIDE 7980 1.0 .1 1000 1.7 .7 243 TWO OCEAN PLATEAU 9240 1.8 .9 200 1.1 1.0 110 WHISKEY CREEK 6800 .8 .1 800 .8 .7 114 WHITE MILL 8700 .9 .6 150 .7 .9 78 WOLVERINE 7650 .8 .1 800 .8 .7 114 ----- ----- Basin wide percent of average 222 123 WIND RIVER BURROUGHS CREEK 8750 2.1 .2 1050 1.9 .6 317 COLD SPRINGS 9630 1.9 .2 950 2.3 .6 383 DEER PARK 9700 -M .8 * 2.8 .7 400 HOBBS PARK 10100 2.9 .7 414 -M .7 * LITTLE WARM 9370 1.6 .3 533 1.7 .6 283 SOUTH PASS 9040 2.2 .4 550 2.7 .6 450 ST. LAWRENCE ALT 8620 1.8 .1 1800 2.4 .6 400 TOGWOTEE PASS 9580 2.6 .8 325 2.2 .9 244 TOWNSEND CREEK 8700 2.4 .3 800 2.7 .8 338 ----- ----- Basin wide percent of average 583 346 BIGHORN BASIN BALD MTN. 9380 2.3 1.4 164 1.9 .9 211 BEAR TRAP MEADOW 8200 1.4 .2 700 1.6 .6 267 BLACKWATER 9780 2.5 1.3 192 1.9 .9 211 BONE SPRINGS DIV 9350 1.6 1.1 145 1.7 1.0 170 EVENING STAR 9200 2.1 1.0 210 2.3 .9 256 GRAVE SPRINGS 8550 2.0 .4 500 2.2 .9 244 KIRWIN 9550 2.1 .8 262 1.6 .6 267 MARQUETTE 8760 3.0 .8 375 2.3 .8 287 MIDDLE POWDER 7760 3.0 .5 600 2.4 .9 267 OWL CREEK 8975 2.2 .4 550 1.6 .4 400 POWDER RIVER PASS 9480 1.5 .4 375 1.6 .7 229 SHELL CREEK 9580 2.3 1.5 153 1.9 .8 237 SYLVAN LAKE 8420 .9 .6 150 .9 .9 100 SYLVAN ROAD 7120 .5 .0 .9 .6 150 TIMBER CREEK 7950 1.5 .1 1500 1.8 .6 300 YOUNTS PEAK 8350 1.1 .5 220 1.0 .7 143 ----- ----- Basin wide percent of average 268 226 SHOSHONE RIVER BLACKWATER 9780 2.5 1.3 192 1.9 .9 211 EVENING STAR 9200 2.1 1.0 210 2.3 .9 256 KIRWIN 9550 2.1 .8 262 1.6 .6 267 MARQUETTE 8760 3.0 .8 375 2.3 .8 287 SYLVAN LAKE 8420 .9 .6 150 .9 .9 100 SYLVAN ROAD 7120 .5 .0 .9 .6 150 YOUNTS PEAK 8350 1.1 .5 220 1.0 .7 143 ----- ----- Basin wide percent of average 234 202 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.4 .2 700 1.6 .6 267 BIG GOOSE 7990 1.3 .3 433 1.8 .8 225 BONE SPRINGS DIV 9350 1.6 1.1 145 1.7 1.0 170 BURGESS JUNCTION 7880 1.8 .6 300 2.0 .8 250 CLOUD PEAK RESERVOIR 9860 1.8 .3 600 2.3 1.0 230 DOME LAKE 8880 1.7 .7 243 2.1 .9 233 GRAVE SPRINGS 8550 2.0 .4 500 2.2 .9 244 HANSEN SAWMILL 8360 1.6 .2 800 1.6 .7 229 MIDDLE POWDER 7760 3.0 .5 600 2.4 .9 267 POWDER RIVER PASS 9480 1.5 .4 375 1.6 .7 229 SUCKER CREEK 8880 2.1 .5 420 2.2 .9 244 TIE CREEK 6870 2.0 .0 2.2 1.0 220 ----- ----- Basin wide percent of average 381 232 BELLE FOURCHE BLIND PARK 6890 .8 .0 2.0 .9 222 COLE CANYON 5910 1.4 .2 700 2.8 .7 400 NORTH RAPID CREEK 6130 .6 .1 600 1.9 .9 211 ----- ----- Basin wide percent of average 667 268 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 1.3 .7 186 DIVIDE PEAK 8880 1.2 .6 200 2.4 .9 267 ELK RIVER 8700 .4 .1 400 1.7 .7 243 JOE WRIGHT 10120 .8 .6 133 1.5 1.2 125 NORTH FRENCH CREEK 10130 4.5 1.1 409 -M 1.0 * OLD BATTLE 10000 3.8 .9 422 4.0 1.1 364 SAGE CREEK BASIN 7850 .1 .2 50 1.6 .5 320 SOUTH BRUSH CREEK 8440 1.2 .1 1200 2.7 .9 300 TOWER 10500 3.7 .7 529 3.4 1.1 309 WEBBER SPRINGS 9250 1.9 .4 475 2.9 1.0 290 WILLOW CREEK PASS 9540 .3 .2 150 .7 .7 100 ----- ----- Basin wide percent of average 365 252 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.2 .7 457 -M .8 * CASPER MTN. 7900 1.2 .5 240 2.0 .8 250 DEADMAN HILL 10220 .3 .7 43 2.2 .9 244 DEER PARK 9700 -M .8 * 2.8 .7 400 LAPRELE CREEK 8375 1.1 .2 550 1.7 .6 283 RENO HILL 8400 1.4 .6 233 1.8 .8 225 ROACH 9700 1.8 .2 900 2.5 .8 312 SAND LAKE 10050 4.2 1.1 382 4.1 1.0 410 SOUTH PASS 9040 2.2 .4 550 2.7 .6 450 WINDY PEAK 7900 1.3 .1 1300 1.6 .6 267 ----- ----- Basin wide percent of average 371 315 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.1 .6 183 DIVIDE PEAK 8880 1.2 .6 200 2.4 .9 267 OLD BATTLE 10000 3.8 .9 422 4.0 1.1 364 SANDSTONE RS 8150 -M .0 * 1.1 .7 157 WHISKEY PARK 8950 2.1 .4 525 3.2 1.0 320 ----- ----- Basin wide percent of average 374 274 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.7 .3 567 1.5 .6 250 BLIND BULL SUM 8650 1.8 .3 600 1.4 .7 200 EAST RIM DIVIDE 7930 1.1 .0 1.6 .5 320 ELKHART PARK G.S. 9400 1.8 .1 1800 1.5 .7 214 GROS VENTRE SUMMIT 8750 1.5 .4 375 1.6 .7 229 GUNSIGHT PASS 9820 1.5 -M * 2.1 -M * KENDALL R.S. 7740 1.1 .0 1.5 .5 300 LOOMIS PARK 8240 1.4 .2 700 1.7 .6 283 NEW FORK LAKE 8340 .9 .0 1.4 .5 280 SNIDER BASIN 8060 1.4 .1 1400 1.6 .5 320 SPRING CREEK DIVIDE 9000 2.0 .2 1000 2.2 .7 314 TRIPLE PEAK 8500 2.0 .1 2000 2.5 .7 357 ----- ----- Basin wide percent of average 800 276 LOWER GREEN RIVER HAMS FORK 7840 .9 .0 1.3 .5 260 HEWINTA 9519 .1 .3 33 .9 .8 112 HICKERSON PARK 9145 .1 .0 .8 .6 133 HOLE-IN-ROCK 9150 .1 .0 1.0 .6 167 INDIAN CREEK 9425 2.4 .3 800 2.5 .8 312 KELLEY R.S. 8180 1.3 .1 1300 1.7 .7 243 STEEL CREEK PARK 10200 .6 .6 100 .9 .8 112 ----- ----- Basin wide percent of average 338 190 UPPER BEAR RIVER BUG LAKE 7950 .8 .4 200 1.0 .8 125 HAYDEN FORK 9212 .1 .3 33 1.3 .8 162 KELLEY R.S. 8180 1.3 .1 1300 1.7 .7 243 LILY LAKE 9156 .3 .4 75 .9 .8 112 MONTE CRISTO 8960 1.2 .6 200 1.4 1.0 140 SALT RIVER SUMMIT 7760 .8 .0 1.3 .6 217 TRIAL LAKE 9992 1.3 .7 186 1.2 .9 133 ----- ----- Basin wide percent of average 200 157 ----------------------------------------------------------------------------- -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.