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 THURSDAY: OCTOBER 15 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .1 0 1.5 .8 188 COTTONWOOD CREEK 7670 1.1 .0 3.0 1.1 273 GRAND TARGHEE 9260 3.8 -M * 3.0 -M * GRANITE CREEK 6770 .5 .1 500 1.5 .7 214 GRASSY LAKE 7265 .6 .2 300 1.7 1.3 131 GROS VENTRE SUMMIT 8750 1.9 .5 380 1.8 .8 225 GUNSIGHT PASS 9820 1.8 -M * 2.5 -M * LEWIS LAKE DIVIDE 7850 .9 .0 1.9 1.1 173 PHILLIPS BENCH 8200 1.0 .2 500 1.8 .9 200 SALT RIVER SUMMIT 7760 .3 .0 2.2 .7 314 SNAKE RIVER STATION 6920 .2 .0 1.3 .9 144 SPRING CREEK DIVIDE 9000 3.1 .3 1033 3.3 .9 367 THUMB DIVIDE 7980 1.3 .1 1300 2.5 .8 312 TOGWOTEE PASS 9580 3.1 .9 344 2.7 1.1 245 TWO OCEAN PLATEAU 9240 2.4 1.1 218 1.8 1.2 150 WILLOW CREEK 8380 2.7 .4 675 3.9 1.5 260 ----- ----- Basin wide percent of average 426 224 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.3 1.2 192 1.8 .8 225 BLACK BEAR 8170 2.4 .7 343 2.5 1.2 208 CANYON 7870 .8 .2 400 1.1 .7 157 FISHER CREEK 9100 2.5 .9 278 2.4 1.2 200 MADISON PLATEAU 7750 1.5 .4 375 2.4 1.0 240 NORTHEAST ENTRANCE 7350 .1 .0 1.2 .6 200 PARKER PEAK 9400 -M 1.1 * 1.5 1.0 150 SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150 THUMB DIVIDE 7980 1.3 .1 1300 2.5 .8 312 TWO OCEAN PLATEAU 9240 2.4 1.1 218 1.8 1.2 150 WHISKEY CREEK 6800 .7 .1 700 1.5 .8 188 WHITE MILL 8700 2.0 .7 286 1.8 1.1 164 WOLVERINE 7650 .3 .1 300 1.2 .8 150 ----- ----- Basin wide percent of average 282 190 WIND RIVER BURROUGHS CREEK 8750 2.4 .3 800 2.1 .7 300 COLD SPRINGS 9630 2.0 .2 1000 2.3 .7 329 DEER PARK 9700 3.1 .8 388 3.6 .9 400 HOBBS PARK 10100 3.1 .7 443 -M .9 * LITTLE WARM 9370 1.6 .3 533 1.9 .7 271 SOUTH PASS 9040 2.7 .4 675 3.1 .8 388 ST. LAWRENCE ALT 8620 1.8 .1 1800 2.5 .7 357 TOGWOTEE PASS 9580 3.1 .9 344 2.7 1.1 245 TOWNSEND CREEK 8700 2.5 .3 833 2.8 .9 311 ----- ----- Basin wide percent of average 558 323 BIGHORN BASIN BALD MTN. 9380 2.4 1.5 160 2.1 1.1 191 BEAR TRAP MEADOW 8200 1.3 .2 650 1.7 .8 212 BLACKWATER 9780 2.9 1.4 207 2.3 1.1 209 BONE SPRINGS DIV 9350 1.6 1.2 133 1.8 1.1 164 EVENING STAR 9200 3.0 1.1 273 3.2 1.1 291 GRAVE SPRINGS 8550 2.0 .2 1000 2.2 1.0 220 KIRWIN 9550 2.2 .8 275 1.7 .7 243 MARQUETTE 8760 2.9 .8 362 2.3 1.0 230 MIDDLE POWDER 7760 2.9 .5 580 2.5 1.1 227 OWL CREEK 8975 2.3 .3 767 1.7 .5 340 POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178 SHELL CREEK 9580 2.4 1.5 160 1.8 .9 200 SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150 SYLVAN ROAD 7120 .2 .0 1.2 .7 171 TIMBER CREEK 7950 1.6 .1 1600 1.9 .7 271 YOUNTS PEAK 8350 1.4 .5 280 1.4 .8 175 ----- ----- Basin wide percent of average 281 213 SHOSHONE RIVER BLACKWATER 9780 2.9 1.4 207 2.3 1.1 209 EVENING STAR 9200 3.0 1.1 273 3.2 1.1 291 KIRWIN 9550 2.2 .8 275 1.7 .7 243 MARQUETTE 8760 2.9 .8 362 2.3 1.0 230 SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150 SYLVAN ROAD 7120 .2 .0 1.2 .7 171 YOUNTS PEAK 8350 1.4 .5 280 1.4 .8 175 ----- ----- Basin wide percent of average 258 212 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.3 .2 650 1.7 .8 212 BIG GOOSE 7990 1.3 .3 433 1.9 1.0 190 BONE SPRINGS DIV 9350 1.6 1.2 133 1.8 1.1 164 BURGESS JUNCTION 7880 1.9 .6 317 2.1 1.0 210 CLOUD PEAK RESERVOIR 9860 1.8 .4 450 2.5 1.2 208 DOME LAKE 8880 1.7 .7 243 2.2 1.1 200 GRAVE SPRINGS 8550 2.0 .2 1000 2.2 1.0 220 HANSEN SAWMILL 8360 1.4 .1 1400 1.7 .8 212 MIDDLE POWDER 7760 2.9 .5 580 2.5 1.1 227 POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178 SUCKER CREEK 8880 2.1 .5 420 2.1 1.1 191 TIE CREEK 6870 1.8 .0 2.4 1.2 200 ----- ----- Basin wide percent of average 375 201 BELLE FOURCHE BLIND PARK 6890 .5 .0 2.1 1.0 210 COLE CANYON 5910 1.1 .2 550 2.8 .8 350 NORTH RAPID CREEK 6130 .3 .1 300 2.1 1.1 191 ----- ----- Basin wide percent of average 467 241 UPPER N. PLATTE RIVER COLUMBINE 9160 .3 .0 2.4 .8 300 DIVIDE PEAK 8880 .8 .7 114 2.8 1.1 255 ELK RIVER 8700 .1 .1 100 2.1 .9 233 JOE WRIGHT 10120 1.3 .7 186 2.2 1.4 157 NORTH FRENCH CREEK 10130 5.0 1.3 385 -M 1.2 * OLD BATTLE 10000 5.1 1.0 510 5.2 1.3 400 SAGE CREEK BASIN 7850 .1 .3 33 2.1 .6 350 SOUTH BRUSH CREEK 8440 .9 .2 450 3.0 1.0 300 TOWER 10500 5.3 .9 589 5.0 1.3 385 WEBBER SPRINGS 9250 2.2 .5 440 3.9 1.2 325 WILLOW CREEK PASS 9540 .3 .3 100 1.0 .8 125 ----- ----- Basin wide percent of average 352 286 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.5 .8 438 -M .9 * CASPER MTN. 7900 .9 .6 150 2.1 1.0 210 DEADMAN HILL 10220 .6 .9 67 2.6 1.0 260 DEER PARK 9700 3.1 .8 388 3.6 .9 400 LAPRELE CREEK 8375 .8 .2 400 1.8 .7 257 RENO HILL 8400 1.3 .7 186 1.8 1.0 180 ROACH 9700 1.9 .3 633 2.7 .9 300 SAND LAKE 10050 4.9 1.2 408 4.8 1.2 400 SOUTH PASS 9040 2.7 .4 675 3.1 .8 388 WINDY PEAK 7900 1.1 .1 1100 1.7 .7 243 ----- ----- Basin wide percent of average 347 295 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.2 .7 171 DIVIDE PEAK 8880 .8 .7 114 2.8 1.1 255 OLD BATTLE 10000 5.1 1.0 510 5.2 1.3 400 SANDSTONE RS 8150 -M .0 * 1.4 .9 156 WHISKEY PARK 8950 2.1 .5 420 4.0 1.2 333 ----- ----- Basin wide percent of average 364 281 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 .4 725 2.8 .7 400 BLIND BULL SUM 8650 2.3 .4 575 1.8 .8 225 EAST RIM DIVIDE 7930 .7 .0 1.7 .6 283 ELKHART PARK G.S. 9400 2.3 .2 1150 2.2 .8 275 GROS VENTRE SUMMIT 8750 1.9 .5 380 1.8 .8 225 GUNSIGHT PASS 9820 1.8 -M * 2.5 -M * KENDALL R.S. 7740 .8 .0 1.8 .6 300 LOOMIS PARK 8240 1.3 .2 650 1.9 .7 271 NEW FORK LAKE 8340 .6 .0 1.5 .6 250 SNIDER BASIN 8060 1.5 .1 1500 2.3 .6 383 SPRING CREEK DIVIDE 9000 3.1 .3 1033 3.3 .9 367 TRIPLE PEAK 8500 2.4 .2 1200 3.2 .9 356 ----- ----- Basin wide percent of average 770 304 LOWER GREEN RIVER HAMS FORK 7840 .4 .0 2.1 .6 350 HEWINTA 9519 .1 .4 25 1.0 1.0 100 HICKERSON PARK 9145 .1 .0 .8 .7 114 HOLE-IN-ROCK 9150 .0 .0 100 1.0 .7 143 INDIAN CREEK 9425 4.3 .4 1075 3.9 .9 433 KELLEY R.S. 8180 2.1 .2 1050 3.0 .8 375 STEEL CREEK PARK 10200 .8 .7 114 1.0 .9 111 ----- ----- Basin wide percent of average 429 229 UPPER BEAR RIVER BUG LAKE 7950 .2 .5 40 2.0 .9 222 HAYDEN FORK 9212 -M .3 * -M 1.0 * KELLEY R.S. 8180 2.1 .2 1050 3.0 .8 375 LILY LAKE 9156 .2 .4 50 1.1 .9 122 MONTE CRISTO 8960 1.8 .6 300 2.0 1.1 182 SALT RIVER SUMMIT 7760 .3 .0 2.2 .7 314 TRIAL LAKE 9992 2.3 .8 287 2.3 1.1 209 ----- ----- Basin wide percent of average 264 229 ----------------------------------------------------------------------------- -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.