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 FRIDAY: OCTOBER 23 , 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 .2 0 1.8 1.3 138 COTTONWOOD CREEK 7670 .0 .4 0 3.2 1.9 168 GRAND TARGHEE 9260 4.2 -M * 3.9 -M * GRANITE CREEK 6770 .1 .2 50 1.8 1.1 164 GRASSY LAKE 7265 .2 .7 29 2.4 2.1 114 GROS VENTRE SUMMIT 8750 1.7 .9 189 1.9 1.3 146 GUNSIGHT PASS 9820 1.5 -M * 2.7 -M * LEWIS LAKE DIVIDE 7850 -M .4 * -M 1.9 * PHILLIPS BENCH 8200 .1 .7 14 2.0 1.5 133 SALT RIVER SUMMIT 7760 .0 .1 0 2.2 1.3 169 SNAKE RIVER STATION 6920 .1 .2 50 2.0 1.5 133 SPRING CREEK DIVIDE 9000 2.8 .8 350 3.4 1.5 227 THUMB DIVIDE 7980 .0 .4 0 3.1 1.4 221 TOGWOTEE PASS 9580 3.1 1.6 194 3.0 1.8 167 TWO OCEAN PLATEAU 9240 3.0 1.9 158 2.4 2.0 120 WILLOW CREEK 8380 1.3 .9 144 4.3 2.5 172 ----- ----- Basin wide percent of average 138 158 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.5 1.8 139 2.0 1.4 143 BLACK BEAR 8170 3.0 1.2 250 4.3 2.1 205 CANYON 7870 .7 .3 233 2.0 1.1 182 FISHER CREEK 9100 2.9 1.5 193 3.1 2.1 148 MADISON PLATEAU 7750 1.3 .7 186 4.0 1.7 235 NORTHEAST ENTRANCE 7350 .0 .1 0 1.8 1.0 180 PARKER PEAK 9400 2.9 1.9 153 2.2 1.6 138 SYLVAN LAKE 8420 .2 1.1 18 1.9 1.7 112 THUMB DIVIDE 7980 .0 .4 0 3.1 1.4 221 TWO OCEAN PLATEAU 9240 3.0 1.9 158 2.4 2.0 120 WHISKEY CREEK 6800 .1 .2 50 2.6 1.4 186 WHITE MILL 8700 2.5 1.1 227 2.3 1.8 128 WOLVERINE 7650 .2 .2 100 1.3 1.3 100 ----- ----- Basin wide percent of average 156 160 WIND RIVER BURROUGHS CREEK 8750 2.3 .5 460 2.2 1.1 200 COLD SPRINGS 9630 2.5 .6 417 2.7 1.2 225 DEER PARK 9700 2.8 1.1 255 3.7 1.7 218 HOBBS PARK 10100 3.3 1.5 220 3.1 1.5 207 LITTLE WARM 9370 1.5 .7 214 2.1 1.2 175 SOUTH PASS 9040 2.4 .8 300 3.3 1.3 254 ST. LAWRENCE ALT 8620 1.2 .5 240 2.9 1.2 242 TOGWOTEE PASS 9580 3.1 1.6 194 3.0 1.8 167 TOWNSEND CREEK 8700 2.1 .6 350 3.1 1.5 207 ----- ----- Basin wide percent of average 268 209 BIGHORN BASIN BALD MTN. 9380 2.4 2.0 120 2.1 1.7 124 BEAR TRAP MEADOW 8200 .7 .4 175 1.7 1.2 142 BLACKWATER 9780 3.1 2.2 141 2.6 1.8 144 BONE SPRINGS DIV 9350 1.6 1.9 84 1.8 1.8 100 EVENING STAR 9200 3.0 1.6 188 3.4 1.8 189 GRAVE SPRINGS 8550 1.5 .7 214 2.5 1.5 167 KIRWIN 9550 2.3 1.3 177 2.0 1.2 167 MARQUETTE 8760 2.3 1.4 164 2.3 1.6 144 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.8 139 OWL CREEK 8975 2.2 .6 367 1.8 .8 225 POWDER RIVER PASS 9480 1.6 .8 200 1.8 1.4 129 SHELL CREEK 9580 2.4 2.0 120 2.0 1.4 143 SYLVAN LAKE 8420 .2 1.1 18 1.9 1.7 112 SYLVAN ROAD 7120 .0 .2 0 1.4 1.2 117 TIMBER CREEK 7950 1.0 .6 167 2.0 1.1 182 YOUNTS PEAK 8350 1.2 .9 133 1.6 1.3 123 ----- ----- Basin wide percent of average 146 143 SHOSHONE RIVER BLACKWATER 9780 3.1 2.2 141 2.6 1.8 144 EVENING STAR 9200 3.0 1.6 188 3.4 1.8 189 KIRWIN 9550 2.3 1.3 177 2.0 1.2 167 MARQUETTE 8760 2.3 1.4 164 2.3 1.6 144 SYLVAN LAKE 8420 .2 1.1 18 1.9 1.7 112 SYLVAN ROAD 7120 .0 .2 0 1.4 1.2 117 YOUNTS PEAK 8350 1.2 .9 133 1.6 1.3 123 ----- ----- Basin wide percent of average 139 143 POWDER-TONGUE BEAR TRAP MEADOW 8200 .7 .4 175 1.7 1.2 142 BIG GOOSE 7990 .5 .5 100 1.9 1.6 119 BONE SPRINGS DIV 9350 1.6 1.9 84 1.8 1.8 100 BURGESS JUNCTION 7880 1.6 1.0 160 2.1 1.6 131 CLOUD PEAK RESERVOIR 9860 2.1 1.0 210 2.2 1.9 116 DOME LAKE 8880 1.3 1.2 108 2.2 1.8 122 GRAVE SPRINGS 8550 1.5 .7 214 2.5 1.5 167 HANSEN SAWMILL 8360 1.1 .4 275 1.9 1.3 146 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.8 139 POWDER RIVER PASS 9480 1.6 .8 200 1.8 1.4 129 SUCKER CREEK 8880 1.8 .8 225 2.3 1.7 135 TIE CREEK 6870 .0 .3 0 2.5 1.9 132 ----- ----- Basin wide percent of average 156 130 BELLE FOURCHE BLIND PARK 6890 .0 .1 0 2.4 1.8 133 COLE CANYON 5910 .0 .6 0 2.8 1.3 215 NORTH RAPID CREEK 6130 .0 .3 0 2.4 1.8 133 ----- ----- Basin wide percent of average 0 155 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .2 0 2.6 1.5 173 DIVIDE PEAK 8880 .2 1.1 18 3.0 1.9 158 ELK RIVER 8700 .1 .3 33 2.2 1.5 147 JOE WRIGHT 10120 2.5 1.5 167 2.4 2.3 104 NORTH FRENCH CREEK 10130 5.1 2.1 243 5.5 2.2 250 OLD BATTLE 10000 5.1 1.8 283 5.5 2.3 239 SAGE CREEK BASIN 7850 .1 .6 17 2.1 1.1 191 SOUTH BRUSH CREEK 8440 .0 .3 0 3.2 1.8 178 TOWER 10500 4.8 1.8 267 5.3 2.5 212 WEBBER SPRINGS 9250 1.5 1.0 150 4.1 2.0 205 WILLOW CREEK PASS 9540 .2 .6 33 1.6 1.4 114 ----- ----- Basin wide percent of average 173 183 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.4 1.4 243 4.1 1.6 256 CASPER MTN. 7900 .0 1.1 0 2.2 1.7 129 DEADMAN HILL 10220 .1 1.4 7 2.8 1.7 165 DEER PARK 9700 2.8 1.1 255 3.7 1.7 218 LAPRELE CREEK 8375 .1 .5 20 2.0 1.3 154 RENO HILL 8400 .6 1.1 55 2.0 1.7 118 ROACH 9700 1.4 .6 233 3.0 1.6 188 SAND LAKE 10050 4.8 2.0 240 5.1 2.0 255 SOUTH PASS 9040 2.4 .8 300 3.3 1.3 254 WINDY PEAK 7900 .4 .2 200 2.2 1.2 183 ----- ----- Basin wide percent of average 157 192 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .2 0 1.3 1.3 100 DIVIDE PEAK 8880 .2 1.1 18 3.0 1.9 158 OLD BATTLE 10000 5.1 1.8 283 5.5 2.3 239 SANDSTONE RS 8150 -M .2 * 1.6 1.6 100 WHISKEY PARK 8950 1.0 .9 111 4.2 2.0 210 ----- ----- Basin wide percent of average 158 171 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 .7 386 3.0 1.2 250 BLIND BULL SUM 8650 2.0 .8 250 1.9 1.4 136 EAST RIM DIVIDE 7930 .1 .2 50 1.8 .9 200 ELKHART PARK G.S. 9400 2.2 .5 440 2.6 1.3 200 GROS VENTRE SUMMIT 8750 1.7 .9 189 1.9 1.3 146 GUNSIGHT PASS 9820 1.5 -M * 2.7 -M * KENDALL R.S. 7740 .1 .3 33 1.9 1.0 190 LOOMIS PARK 8240 .1 .5 20 2.0 1.2 167 NEW FORK LAKE 8340 .0 .2 0 1.4 1.0 140 SNIDER BASIN 8060 .8 .3 267 2.4 1.0 240 SPRING CREEK DIVIDE 9000 2.8 .8 350 3.4 1.5 227 TRIPLE PEAK 8500 1.9 .5 380 3.5 1.4 250 ----- ----- Basin wide percent of average 253 195 LOWER GREEN RIVER HAMS FORK 7840 .2 .1 200 2.8 .9 311 HEWINTA 9519 .0 .6 0 1.2 1.6 75 HICKERSON PARK 9145 .0 .2 0 1.1 1.2 92 HOLE-IN-ROCK 9150 .0 .2 0 1.5 1.2 125 INDIAN CREEK 9425 4.1 .8 512 4.4 1.6 275 KELLEY R.S. 8180 1.0 .5 200 3.2 1.4 229 STEEL CREEK PARK 10200 1.3 1.1 118 1.3 1.6 81 ----- ----- Basin wide percent of average 189 163 UPPER BEAR RIVER BUG LAKE 7950 .1 .8 12 2.6 1.6 162 HAYDEN FORK 9212 .1 .5 20 2.0 1.6 125 KELLEY R.S. 8180 1.0 .5 200 3.2 1.4 229 LILY LAKE 9156 .0 .6 0 1.3 1.6 81 MONTE CRISTO 8960 1.1 1.0 110 3.1 1.9 163 SALT RIVER SUMMIT 7760 .0 .1 0 2.2 1.3 169 TRIAL LAKE 9992 1.9 1.2 158 2.4 1.8 133 ----- ----- Basin wide percent of average 89 150 ----------------------------------------------------------------------------- -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.