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 WEDNESDAY: OCTOBER 19 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .2 0* 3.2 1.1 291 COTTONWOOD CREEK 7670 .0 .3 0* 4.3 1.6 269 GRAND TARGHEE 9260 2.4 -M * 4.8 -M * GRANITE CREEK 6770 .0 .1 0* 2.3 .9 256 GRASSY LAKE 7265 .0 .5 0* 5.0 1.8 278 GROS VENTRE SUMMIT 8750 .4 .7 57* 1.9 1.1 173 GUNSIGHT PASS 9820 .8 -M * 2.3 -M * LEWIS LAKE DIVIDE 7850 .2 .3 67* 4.0 1.6 250 PHILLIPS BENCH 8200 .0 .5 0* 2.4 1.2 200 SALT RIVER SUMMIT 7760 .0 .0 100* 2.2 1.1 200 SNAKE RIVER STATION 6920 .0 .1 0* 3.3 1.3 254 SPRING CREEK DIVIDE 9000 1.2 .6 200* 3.2 1.3 246 THUMB DIVIDE 7980 .0 .3 0* 2.3 1.2 192 TOGWOTEE PASS 9580 1.4 1.4 100* 2.8 1.5 187 TWO OCEAN PLATEAU 9240 3.0 1.6 188* 3.4 1.7 200 WILLOW CREEK 8380 .2 .7 29* 4.9 2.1 233 ----- ----- Basin wide percent of average 88* 232 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.2 1.6 75* 2.0 1.2 167 BLACK BEAR 8170 1.7 1.0 170* 4.6 1.8 256 CANYON 7870 .0 .3 0* 1.3 1.0 130 FISHER CREEK 9100 1.4 1.2 117* 3.4 1.8 189 MADISON PLATEAU 7750 .0 .6 0* 3.6 1.4 257 NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 .9 178 PARKER PEAK 9400 .7 1.7 41* 2.0 1.4 143 SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233 THUMB DIVIDE 7980 .0 .3 0* 2.3 1.2 192 TWO OCEAN PLATEAU 9240 3.0 1.6 188* 3.4 1.7 200 WHISKEY CREEK 6800 .0 .2 0* 3.0 1.2 250 WHITE MILL 8700 .8 .9 89* 2.7 1.5 180 WOLVERINE 7650 .0 .2 0* 1.5 1.1 136 ----- ----- Basin wide percent of average 83* 197 WIND RIVER BURROUGHS CREEK 8750 .0 .4 0* 1.2 .9 133 CASTLE CREEK 8400 .0 -M * 1.1 -M * COLD SPRINGS 9630 .0 .5 0* 1.5 1.1 136 DEER PARK 9700 .9 1.0 90* 2.4 1.3 185 HOBBS PARK 10100 1.5 1.3 115* 2.3 1.2 192 LITTLE WARM 9370 .0 .6 0* 1.5 1.0 150 SOUTH PASS 9040 .7 .6 117* 2.1 1.1 191 ST. LAWRENCE ALT 8620 .0 .4 0* 1.0 1.0 100 TOGWOTEE PASS 9580 1.4 1.4 100* 2.8 1.5 187 TOWNSEND CREEK 8700 .0 .6 0* 2.3 1.3 177 ----- ----- Basin wide percent of average 66* 164 BIGHORN BASIN BALD MTN. 9380 2.9 1.8 161* 3.1 1.5 207 BEAR TRAP MEADOW 8200 .0 .4 0* 1.6 1.1 145 BLACKWATER 9780 2.5 2.0 125* 2.9 1.5 193 BONE SPRINGS DIV 9350 3.1 1.6 194* 3.6 1.6 225 EVENING STAR 9200 .3 1.5 20* 2.8 1.5 187 GRAVE SPRINGS 8550 .0 .7 0* 1.8 1.4 129 KIRWIN 9550 1.6 1.1 145* 2.6 1.0 260 MARQUETTE 8760 .3 -M * 3.2 1.4 229 MIDDLE POWDER 7760 .9 .9 100* 3.8 1.6 238 OWL CREEK 8975 .8 .6 133 1.4 .7 200 POWDER RIVER PASS 9480 1.7 .7 243* 2.7 1.2 225 SHELL CREEK 9580 3.6 1.8 200 3.4 1.2 283 SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233 SYLVAN ROAD 7120 .0 .2 0* 1.8 1.0 180 TIMBER CREEK 7950 .0 .7 0 3.5 .9 389 YOUNTS PEAK 8350 .0 .7 0* 2.2 1.1 200 ----- ----- Basin wide percent of average 111* 217 SHOSHONE RIVER BLACKWATER 9780 2.5 2.0 125* 2.9 1.5 193 EVENING STAR 9200 .3 1.5 20* 2.8 1.5 187 KIRWIN 9550 1.6 1.1 145* 2.6 1.0 260 MARQUETTE 8760 .3 -M * 3.2 1.4 229 SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233 SYLVAN ROAD 7120 .0 .2 0* 1.8 1.0 180 YOUNTS PEAK 8350 .0 .7 0* 2.2 1.1 200 ----- ----- Basin wide percent of average 69* 211 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .4 0* 1.6 1.1 145 BIG GOOSE 7990 1.3 .5 260* 3.9 1.4 279 BONE SPRINGS DIV 9350 3.1 1.6 194* 3.6 1.6 225 BURGESS JUNCTION 7880 1.3 .9 144* 3.6 1.4 257 CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.3 1.6 206 DOME LAKE 8880 2.3 1.1 209* 4.1 1.5 273 GRAVE SPRINGS 8550 .0 .7 0* 1.8 1.4 129 HANSEN SAWMILL 8360 .0 .4 0* 1.5 1.1 136 LITTLE GOOSE 8870 1.6 -M * 4.3 -M * MIDDLE POWDER 7760 .9 .9 100* 3.8 1.6 238 POWDER RIVER PASS 9480 1.7 .7 243* 2.7 1.2 225 SOLDIER PARK 8720 .0 -M * 2.3 -M * SUCKER CREEK 8880 2.3 .8 288* 3.6 1.5 240 TIE CREEK 6870 .0 .4 0* 4.1 1.6 256 ----- ----- Basin wide percent of average 157* 221 BELLE FOURCHE BLIND PARK 6890 .0 .2 0* 1.0 1.5 67 COLE CANYON 5910 .0 .4 0* 1.2 1.1 109 NORTH RAPID CREEK 6130 .0 .2 0* .5 1.5 33 ----- ----- Basin wide percent of average 0* 66 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 1.5 -M * 3.1 -M * CINNABAR PARK 9574 .4 .5 80* 2.5 1.3 192 COLUMBINE 9160 .0 .1 0* 1.9 1.2 158 DIVIDE PEAK 8880 .1 .9 11* 2.5 1.6 156 ELK RIVER 8700 .0 .2 0* 1.9 1.3 146 JOE WRIGHT 10120 .0 1.2 0* 2.3 2.0 115 NORTH FRENCH CREEK 10130 1.7 1.8 94* 3.1 1.8 172 OLD BATTLE 10000 1.7 1.5 113* 2.9 1.9 153 SAGE CREEK BASIN 7850 .0 .5 0* 1.6 .9 178 SOUTH BRUSH CREEK 8440 .1 .3 33* 2.2 1.5 147 TOWER 10500 .6 1.4 43* 2.6 2.0 130 WEBBER SPRINGS 9250 .3 .8 38* 2.7 1.7 159 WILLOW CREEK PASS 9540 .3 .5 60* 5.3 1.1 482 ----- ----- Basin wide percent of average 54* 172 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .4 1.1 36* 2.5 1.3 192 CASPER MTN. 7900 2.0 .9 222* 4.6 1.4 329 DEADMAN HILL 10220 .8 1.2 67* 2.0 1.4 143 DEER PARK 9700 .9 1.0 90* 2.4 1.3 185 LAPRELE CREEK 8375 .0 .4 0* 1.8 1.0 180 RENO HILL 8400 1.5 1.0 150* 3.1 1.4 221 ROACH 9700 .8 .4 200* 2.2 1.3 169 SAND LAKE 10050 2.2 1.7 129* 3.0 1.7 176 SOUTH PASS 9040 .7 .6 117* 2.1 1.1 191 WINDY PEAK 7900 .0 .2 0* 1.2 1.0 120 ----- ----- Basin wide percent of average 109* 193 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .1 100* 1.3 1.0 130 DIVIDE PEAK 8880 .1 .9 11* 2.5 1.6 156 OLD BATTLE 10000 1.7 1.5 113* 2.9 1.9 153 SANDSTONE RS 8150 -M .2 * 1.4 1.3 108 WHISKEY PARK 8950 .4 .8 50* 2.7 1.7 159 ----- ----- Basin wide percent of average 70* 144 UPPER GREEN RIVER BIG SANDY OPENING 9080 .6 .6 100* 1.8 1.0 180 BLIND BULL SUM 8650 .7 .6 117* 2.1 1.2 175 EAST RIM DIVIDE 7930 .2 .2 100* 1.9 .8 238 ELKHART PARK G.S. 9400 .7 .3 233* 2.6 1.1 236 GROS VENTRE SUMMIT 8750 .4 .7 57* 1.9 1.1 173 GUNSIGHT PASS 9820 .8 -M * 2.3 -M * KENDALL R.S. 7740 .0 .1 0* 2.1 .9 233 LOOMIS PARK 8240 .0 .3 0* 2.3 1.0 230 NEW FORK LAKE 8340 .1 .1 100* 2.4 .9 267 POCKET CREEK 9360 1.2 -M * 2.5 -M * SNIDER BASIN 8060 .0 .3 0* 1.6 .8 200 SPRING CREEK DIVIDE 9000 1.2 .6 200* 3.2 1.3 246 TRIPLE PEAK 8500 .3 .4 75* 2.7 1.2 225 ----- ----- Basin wide percent of average 100* 218 LOWER GREEN RIVER HAMS FORK 7840 .1 .1 100* 2.3 .8 288 HEWINTA 9519 -M .5 * 2.7 1.4 193 HICKERSON PARK 9145 -M .1 * -M 1.0 * HOLE-IN-ROCK 9150 .0 .1 0* 2.8 1.0 280 INDIAN CREEK 9425 1.8 .6 300* 3.1 1.3 238 KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255 STEEL CREEK PARK 10200 1.8 .9 200* 3.3 1.3 254 ----- ----- Basin wide percent of average 205* 246 UPPER BEAR RIVER BUG LAKE 7950 .0 .6 0* 1.4 1.3 108 HAYDEN FORK 9212 .1 .5 20* 3.9 1.4 279 KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255 LILY LAKE 9156 .0 .6 0* 2.8 1.4 200 MONTE CRISTO 8960 .1 .9 11* 2.4 1.6 150 SALT RIVER SUMMIT 7760 .0 .0 100* 2.2 1.1 200 TRIAL LAKE 9992 .7 1.0 70* -M 1.5 * ----- ----- Basin wide percent of average 33* 196 ----------------------------------------------------------------------------- -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 1971-2000. 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.