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 17 , 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 1.7 .9 189 COTTONWOOD CREEK 7670 .6 .1 600 2.9 1.3 223 GRAND TARGHEE 9260 4.1 -M * 3.3 -M * GRANITE CREEK 6770 .2 .1 200 1.6 .8 200 GRASSY LAKE 7265 .1 .3 33 1.9 1.5 127 GROS VENTRE SUMMIT 8750 1.7 .6 283 1.8 .9 200 GUNSIGHT PASS 9820 1.7 -M * 2.5 -M * LEWIS LAKE DIVIDE 7850 -M .1 * -M 1.3 * PHILLIPS BENCH 8200 .7 .3 233 1.8 1.0 180 SALT RIVER SUMMIT 7760 .2 .0 2.2 .9 244 SNAKE RIVER STATION 6920 .0 .0 100 1.6 1.1 145 SPRING CREEK DIVIDE 9000 3.0 .4 750 3.3 1.0 330 THUMB DIVIDE 7980 .9 .2 450 2.8 1.0 280 TOGWOTEE PASS 9580 3.2 1.1 291 2.9 1.3 223 TWO OCEAN PLATEAU 9240 2.9 1.3 223 2.1 1.4 150 WILLOW CREEK 8380 2.4 .5 480 4.2 1.7 247 ----- ----- Basin wide percent of average 314 208 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.3 1.4 164 1.7 .9 189 BLACK BEAR 8170 2.1 .9 233 2.5 1.4 179 CANYON 7870 .6 .2 300 1.1 .8 138 FISHER CREEK 9100 2.4 1.0 240 2.4 1.4 171 MADISON PLATEAU 7750 1.2 .5 240 2.5 1.2 208 NORTHEAST ENTRANCE 7350 .0 .1 0 1.2 .8 150 PARKER PEAK 9400 -M 1.4 * 1.6 1.2 133 SYLVAN LAKE 8420 .9 .9 100 1.5 1.2 125 THUMB DIVIDE 7980 .9 .2 450 2.8 1.0 280 TWO OCEAN PLATEAU 9240 2.9 1.3 223 2.1 1.4 150 WHISKEY CREEK 6800 .2 .1 200 1.6 .9 178 WHITE MILL 8700 2.0 .8 250 1.7 1.2 142 WOLVERINE 7650 .2 .1 200 1.2 .9 133 ----- ----- Basin wide percent of average 209 167 WIND RIVER BURROUGHS CREEK 8750 2.4 .3 800 2.1 .8 262 COLD SPRINGS 9630 1.9 .3 633 2.2 .9 244 DEER PARK 9700 3.0 .8 375 3.6 1.0 360 HOBBS PARK 10100 3.1 .8 388 -M 1.0 * LITTLE WARM 9370 1.6 .5 320 1.9 .8 237 SOUTH PASS 9040 2.6 .4 650 3.1 .9 344 ST. LAWRENCE ALT 8620 1.5 .2 750 2.5 .8 312 TOGWOTEE PASS 9580 3.2 1.1 291 2.9 1.3 223 TOWNSEND CREEK 8700 2.2 .3 733 2.8 1.1 255 ----- ----- Basin wide percent of average 457 278 BIGHORN BASIN BALD MTN. 9380 2.5 1.6 156 2.1 1.2 175 BEAR TRAP MEADOW 8200 1.2 .2 600 1.7 .9 189 BLACKWATER 9780 2.9 1.7 171 2.3 1.3 177 BONE SPRINGS DIV 9350 1.6 1.3 123 1.6 1.3 123 EVENING STAR 9200 2.9 1.3 223 3.1 1.3 238 GRAVE SPRINGS 8550 1.8 .2 900 2.2 1.2 183 KIRWIN 9550 2.1 .9 233 1.7 .8 212 MARQUETTE 8760 2.9 1.0 290 2.3 1.1 209 MIDDLE POWDER 7760 2.6 .6 433 2.4 1.3 185 OWL CREEK 8975 2.3 .4 575 1.6 .6 267 POWDER RIVER PASS 9480 1.5 .5 300 1.5 1.0 150 SHELL CREEK 9580 2.2 1.6 138 1.8 1.0 180 SYLVAN LAKE 8420 .9 .9 100 1.5 1.2 125 SYLVAN ROAD 7120 .0 .1 0 1.3 .8 162 TIMBER CREEK 7950 1.4 .3 467 1.8 .8 225 YOUNTS PEAK 8350 1.1 .6 183 1.5 .9 167 ----- ----- Basin wide percent of average 227 182 SHOSHONE RIVER BLACKWATER 9780 2.9 1.7 171 2.3 1.3 177 EVENING STAR 9200 2.9 1.3 223 3.1 1.3 238 KIRWIN 9550 2.1 .9 233 1.7 .8 212 MARQUETTE 8760 2.9 1.0 290 2.3 1.1 209 SYLVAN LAKE 8420 .9 .9 100 1.5 1.2 125 SYLVAN ROAD 7120 .0 .1 0 1.3 .8 162 YOUNTS PEAK 8350 1.1 .6 183 1.5 .9 167 ----- ----- Basin wide percent of average 197 185 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .2 600 1.7 .9 189 BIG GOOSE 7990 1.1 .4 275 1.9 1.1 173 BONE SPRINGS DIV 9350 1.6 1.3 123 1.6 1.3 123 BURGESS JUNCTION 7880 1.8 .7 257 2.0 1.1 182 CLOUD PEAK RESERVOIR 9860 1.7 .6 283 1.9 1.4 136 DOME LAKE 8880 1.6 .8 200 2.2 1.3 169 GRAVE SPRINGS 8550 1.8 .2 900 2.2 1.2 183 HANSEN SAWMILL 8360 1.3 .3 433 1.6 .9 178 MIDDLE POWDER 7760 2.6 .6 433 2.4 1.3 185 POWDER RIVER PASS 9480 1.5 .5 300 1.5 1.0 150 SUCKER CREEK 8880 2.0 .6 333 2.1 1.2 175 TIE CREEK 6870 1.5 .1 1500 2.3 1.4 164 ----- ----- Basin wide percent of average 313 166 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 2.1 1.2 175 COLE CANYON 5910 .6 .4 150 2.8 .9 311 NORTH RAPID CREEK 6130 .1 .2 50 2.0 1.2 167 ----- ----- Basin wide percent of average 117 209 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 2.3 1.0 230 DIVIDE PEAK 8880 .5 .8 62 2.8 1.3 215 ELK RIVER 8700 .1 .2 50 2.0 1.0 200 JOE WRIGHT 10120 1.3 .9 144 2.2 1.6 138 NORTH FRENCH CREEK 10130 5.0 1.5 333 5.1 1.4 364 OLD BATTLE 10000 5.0 1.2 417 5.2 1.5 347 SAGE CREEK BASIN 7850 .0 .4 0 2.0 .7 286 SOUTH BRUSH CREEK 8440 .4 .2 200 2.9 1.2 242 TOWER 10500 5.3 1.1 482 5.1 1.6 319 WEBBER SPRINGS 9250 2.0 .6 333 3.8 1.4 271 WILLOW CREEK PASS 9540 .5 .4 125 1.3 .9 144 ----- ----- Basin wide percent of average 275 255 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.5 .9 389 -M 1.1 * CASPER MTN. 7900 .8 .7 114 2.2 1.2 183 DEADMAN HILL 10220 .2 1.0 20 2.6 1.2 217 DEER PARK 9700 3.0 .8 375 3.6 1.0 360 LAPRELE CREEK 8375 .6 .3 200 1.8 .8 225 RENO HILL 8400 1.1 .8 138 1.7 1.1 155 ROACH 9700 1.8 .3 600 2.6 1.1 236 SAND LAKE 10050 4.7 1.4 336 4.6 1.4 329 SOUTH PASS 9040 2.6 .4 650 3.1 .9 344 WINDY PEAK 7900 .8 .1 800 1.6 .8 200 ----- ----- Basin wide percent of average 285 251 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 1.1 .8 138 DIVIDE PEAK 8880 .5 .8 62 2.8 1.3 215 OLD BATTLE 10000 5.0 1.2 417 5.2 1.5 347 SANDSTONE RS 8150 -M .1 * 1.4 1.0 140 WHISKEY PARK 8950 1.8 .6 300 4.0 1.4 286 ----- ----- Basin wide percent of average 281 242 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 .4 675 2.7 .8 338 BLIND BULL SUM 8650 2.2 .5 440 1.8 .9 200 EAST RIM DIVIDE 7930 .1 .1 100 1.7 .6 283 ELKHART PARK G.S. 9400 2.2 .3 733 2.2 .9 244 GROS VENTRE SUMMIT 8750 1.7 .6 283 1.8 .9 200 GUNSIGHT PASS 9820 1.7 -M * 2.5 -M * KENDALL R.S. 7740 .2 .0 1.8 .7 257 LOOMIS PARK 8240 .9 .3 300 1.9 .8 237 NEW FORK LAKE 8340 .2 .0 1.4 .7 200 SNIDER BASIN 8060 1.2 .2 600 2.2 .6 367 SPRING CREEK DIVIDE 9000 3.0 .4 750 3.3 1.0 330 TRIPLE PEAK 8500 2.2 .3 733 3.2 1.0 320 ----- ----- Basin wide percent of average 523 270 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 2.1 .6 350 HEWINTA 9519 .0 .4 0 1.0 1.1 91 HICKERSON PARK 9145 .0 .0 100 .7 .8 87 HOLE-IN-ROCK 9150 .0 .0 100 1.0 .8 125 INDIAN CREEK 9425 4.2 .5 840 4.0 1.1 364 KELLEY R.S. 8180 1.6 .2 800 2.9 .9 322 STEEL CREEK PARK 10200 .9 .8 112 1.0 1.1 91 ----- ----- Basin wide percent of average 353 198 UPPER BEAR RIVER BUG LAKE 7950 .1 .5 20 2.0 1.1 182 HAYDEN FORK 9212 .1 .4 25 1.9 1.1 173 KELLEY R.S. 8180 1.6 .2 800 2.9 .9 322 LILY LAKE 9156 .0 .5 0 1.1 1.1 100 MONTE CRISTO 8960 1.6 .7 229 2.1 1.3 162 SALT RIVER SUMMIT 7760 .2 .0 2.2 .9 244 TRIAL LAKE 9992 2.2 .9 244 2.4 1.3 185 ----- ----- Basin wide percent of average 175 190 ----------------------------------------------------------------------------- -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.