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 MONDAY: OCTOBER 19 , 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 1.6 1.0 160 COTTONWOOD CREEK 7670 .4 .2 200 3.0 1.5 200 GRAND TARGHEE 9260 4.0 -M * 3.5 -M * GRANITE CREEK 6770 .2 .1 200 1.6 .9 178 GRASSY LAKE 7265 .2 .4 50 2.0 1.7 118 GROS VENTRE SUMMIT 8750 1.8 .7 257 1.8 1.0 180 GUNSIGHT PASS 9820 1.7 -M * 2.6 -M * LEWIS LAKE DIVIDE 7850 .5 .2 250 2.3 1.5 153 PHILLIPS BENCH 8200 .3 .4 75 1.9 1.2 158 SALT RIVER SUMMIT 7760 .2 .0 2.1 1.0 210 SNAKE RIVER STATION 6920 .1 .1 100 1.6 1.2 133 SPRING CREEK DIVIDE 9000 2.9 .5 580 3.4 1.2 283 THUMB DIVIDE 7980 .2 .2 100 3.0 1.1 273 TOGWOTEE PASS 9580 3.2 1.3 246 3.0 1.4 214 TWO OCEAN PLATEAU 9240 2.8 1.5 187 2.2 1.6 138 WILLOW CREEK 8380 1.7 .6 283 4.2 2.0 210 ----- ----- Basin wide percent of average 227 184 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.3 1.6 144 1.8 1.1 164 BLACK BEAR 8170 1.8 1.0 180 2.6 1.7 153 CANYON 7870 .3 .3 100 1.3 .9 144 FISHER CREEK 9100 2.3 1.1 209 2.5 1.6 156 MADISON PLATEAU 7750 .8 .5 160 2.6 1.4 186 NORTHEAST ENTRANCE 7350 .1 .1 100 1.3 .9 144 PARKER PEAK 9400 1.1 1.6 69 1.8 1.3 138 SYLVAN LAKE 8420 .5 1.0 50 1.5 1.4 107 THUMB DIVIDE 7980 .2 .2 100 3.0 1.1 273 TWO OCEAN PLATEAU 9240 2.8 1.5 187 2.2 1.6 138 WHISKEY CREEK 6800 .3 .2 150 1.9 1.1 173 WHITE MILL 8700 2.0 .8 250 1.9 1.4 136 WOLVERINE 7650 .2 .2 100 1.2 1.1 109 ----- ----- Basin wide percent of average 146 154 WIND RIVER BURROUGHS CREEK 8750 2.4 .4 600 2.2 .9 244 COLD SPRINGS 9630 1.9 .4 475 2.3 1.0 230 DEER PARK 9700 2.9 1.0 290 3.7 1.2 308 HOBBS PARK 10100 3.1 1.2 258 -M 1.2 * LITTLE WARM 9370 1.5 .5 300 1.9 .9 211 SOUTH PASS 9040 2.6 .6 433 3.2 1.0 320 ST. LAWRENCE ALT 8620 1.3 .4 325 2.5 .9 278 TOGWOTEE PASS 9580 3.2 1.3 246 3.0 1.4 214 TOWNSEND CREEK 8700 2.2 .6 367 2.8 1.2 233 ----- ----- Basin wide percent of average 330 254 BIGHORN BASIN BALD MTN. 9380 2.5 1.7 147 2.2 1.4 157 BEAR TRAP MEADOW 8200 1.0 .4 250 1.6 1.0 160 BLACKWATER 9780 3.0 1.9 158 2.4 1.4 171 BONE SPRINGS DIV 9350 1.7 1.5 113 1.9 1.5 127 EVENING STAR 9200 2.9 1.5 193 3.2 1.4 229 GRAVE SPRINGS 8550 1.7 .7 243 2.2 1.3 169 KIRWIN 9550 2.3 1.0 230 1.8 .9 200 MARQUETTE 8760 2.4 1.3 185 2.3 1.3 177 MIDDLE POWDER 7760 2.2 .9 244 2.5 1.5 167 OWL CREEK 8975 2.2 .5 440 1.7 .7 243 POWDER RIVER PASS 9480 1.5 .7 214 1.7 1.1 155 SHELL CREEK 9580 2.4 1.8 133 1.8 1.1 164 SYLVAN LAKE 8420 .5 1.0 50 1.5 1.4 107 SYLVAN ROAD 7120 .0 .2 0 1.2 .9 133 TIMBER CREEK 7950 1.2 .6 200 1.9 .9 211 YOUNTS PEAK 8350 1.3 .6 217 1.6 1.0 160 ----- ----- Basin wide percent of average 177 168 SHOSHONE RIVER BLACKWATER 9780 3.0 1.9 158 2.4 1.4 171 EVENING STAR 9200 2.9 1.5 193 3.2 1.4 229 KIRWIN 9550 2.3 1.0 230 1.8 .9 200 MARQUETTE 8760 2.4 1.3 185 2.3 1.3 177 SYLVAN LAKE 8420 .5 1.0 50 1.5 1.4 107 SYLVAN ROAD 7120 .0 .2 0 1.2 .9 133 YOUNTS PEAK 8350 1.3 .6 217 1.6 1.0 160 ----- ----- Basin wide percent of average 165 169 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.0 .4 250 1.6 1.0 160 BIG GOOSE 7990 .9 .4 225 1.9 1.3 146 BONE SPRINGS DIV 9350 1.7 1.5 113 1.9 1.5 127 BURGESS JUNCTION 7880 1.7 .9 189 2.1 1.3 162 CLOUD PEAK RESERVOIR 9860 1.7 .8 212 2.5 1.5 167 DOME LAKE 8880 1.5 1.0 150 2.3 1.4 164 GRAVE SPRINGS 8550 1.7 .7 243 2.2 1.3 169 HANSEN SAWMILL 8360 1.1 .4 275 1.7 1.0 170 MIDDLE POWDER 7760 2.2 .9 244 2.5 1.5 167 POWDER RIVER PASS 9480 1.5 .7 214 1.7 1.1 155 SUCKER CREEK 8880 1.9 .8 237 2.0 1.4 143 TIE CREEK 6870 -M .5 * 2.4 1.5 160 ----- ----- Basin wide percent of average 199 157 BELLE FOURCHE BLIND PARK 6890 .1 .2 50 2.1 1.4 150 COLE CANYON 5910 .0 .4 0 3.1 1.0 310 NORTH RAPID CREEK 6130 .2 .2 100 2.1 1.4 150 ----- ----- Basin wide percent of average 38 192 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .1 0 2.5 1.2 208 DIVIDE PEAK 8880 .2 .9 22 2.7 1.5 180 ELK RIVER 8700 .0 .2 0 2.1 1.2 175 JOE WRIGHT 10120 1.1 1.1 100 2.2 1.8 122 NORTH FRENCH CREEK 10130 4.9 1.6 306 5.1 1.7 300 OLD BATTLE 10000 5.0 1.4 357 5.3 1.8 294 SAGE CREEK BASIN 7850 .0 .5 0 2.0 .8 250 SOUTH BRUSH CREEK 8440 .1 .2 50 3.2 1.4 229 TOWER 10500 5.2 1.3 400 5.3 1.9 279 WEBBER SPRINGS 9250 1.8 .7 257 3.8 1.6 237 WILLOW CREEK PASS 9540 .7 .5 140 1.4 1.1 127 ----- ----- Basin wide percent of average 224 222 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.6 1.1 327 -M 1.2 * CASPER MTN. 7900 .4 .8 50 2.2 1.3 169 DEADMAN HILL 10220 .3 1.1 27 2.6 1.3 200 DEER PARK 9700 2.9 1.0 290 3.7 1.2 308 LAPRELE CREEK 8375 .4 .4 100 1.8 1.0 180 RENO HILL 8400 1.0 .9 111 2.2 1.3 169 ROACH 9700 1.6 .4 400 2.7 1.2 225 SAND LAKE 10050 4.8 1.6 300 5.0 1.6 312 SOUTH PASS 9040 2.6 .6 433 3.2 1.0 320 WINDY PEAK 7900 .4 .2 200 2.1 .9 233 ----- ----- Basin wide percent of average 222 236 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 1.2 1.0 120 DIVIDE PEAK 8880 .2 .9 22 2.7 1.5 180 OLD BATTLE 10000 5.0 1.4 357 5.3 1.8 294 SANDSTONE RS 8150 -M .1 * 1.4 1.2 117 WHISKEY PARK 8950 1.5 .7 214 4.0 1.6 250 ----- ----- Basin wide percent of average 223 206 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 .5 560 2.9 1.0 290 BLIND BULL SUM 8650 2.1 .6 350 1.8 1.1 164 EAST RIM DIVIDE 7930 .1 .1 100 1.8 .7 257 ELKHART PARK G.S. 9400 2.3 .3 767 2.3 1.1 209 GROS VENTRE SUMMIT 8750 1.8 .7 257 1.8 1.0 180 GUNSIGHT PASS 9820 1.7 -M * 2.6 -M * KENDALL R.S. 7740 .2 .1 200 1.8 .8 225 LOOMIS PARK 8240 .6 .3 200 1.9 .9 211 NEW FORK LAKE 8340 .1 .1 100 2.2 .8 275 SNIDER BASIN 8060 1.1 .2 550 2.3 .7 329 SPRING CREEK DIVIDE 9000 2.9 .5 580 3.4 1.2 283 TRIPLE PEAK 8500 2.1 .4 525 3.3 1.1 300 ----- ----- Basin wide percent of average 424 245 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 2.2 .7 314 HEWINTA 9519 .1 .5 20 1.0 1.3 77 HICKERSON PARK 9145 .1 .1 100 .8 .9 89 HOLE-IN-ROCK 9150 .0 .1 0 1.0 1.0 100 INDIAN CREEK 9425 4.0 .5 800 4.2 1.2 350 KELLEY R.S. 8180 1.2 .3 400 3.1 1.1 282 STEEL CREEK PARK 10200 1.0 .9 111 1.0 1.2 83 ----- ----- Basin wide percent of average 267 180 UPPER BEAR RIVER BUG LAKE 7950 .2 .6 33 1.9 1.3 146 HAYDEN FORK 9212 .1 .4 25 1.8 1.3 138 KELLEY R.S. 8180 1.2 .3 400 3.1 1.1 282 LILY LAKE 9156 .3 .5 60 1.1 1.3 85 MONTE CRISTO 8960 .7 .8 87 2.4 1.5 160 SALT RIVER SUMMIT 7760 .2 .0 2.1 1.0 210 TRIAL LAKE 9992 2.1 1.0 210 2.4 1.4 171 ----- ----- Basin wide percent of average 128 166 ----------------------------------------------------------------------------- -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.