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 29 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .5 20 2.6 1.8 144 COTTONWOOD CREEK 7670 -M .7 * -M 2.6 * GRAND TARGHEE 9260 5.8 -M * 4.9 -M * GRANITE CREEK 6770 .1 .4 25 2.5 1.5 167 GRASSY LAKE 7265 .7 1.1 64 3.3 2.9 114 GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131 GUNSIGHT PASS 9820 1.5 -M * 2.9 -M * LEWIS LAKE DIVIDE 7850 .5 .9 56 3.3 2.7 122 PHILLIPS BENCH 8200 1.0 1.1 91 3.1 2.0 155 SALT RIVER SUMMIT 7760 .0 .3 0 2.3 1.7 135 SNAKE RIVER STATION 6920 .1 .4 25 2.9 2.0 145 SPRING CREEK DIVIDE 9000 3.1 1.2 258 3.8 2.2 173 THUMB DIVIDE 7980 .6 .6 100 3.7 1.8 206 TOGWOTEE PASS 9580 3.9 2.2 177 4.0 2.5 160 TWO OCEAN PLATEAU 9240 4.3 2.6 165 3.2 2.7 119 WILLOW CREEK 8380 2.0 1.5 133 5.4 3.3 164 ----- ----- Basin wide percent of average 131 147 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 3.2 2.4 133 2.6 1.9 137 BLACK BEAR 8170 4.2 2.3 183 5.5 3.0 183 CANYON 7870 1.2 .5 240 2.5 1.6 156 FISHER CREEK 9100 4.2 2.2 191 4.5 2.9 155 MADISON PLATEAU 7750 1.9 1.4 136 4.8 2.2 218 NORTHEAST ENTRANCE 7350 .1 .2 50 2.4 1.4 171 PARKER PEAK 9400 3.8 2.3 165 3.0 2.1 143 SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122 THUMB DIVIDE 7980 .6 .6 100 3.7 1.8 206 TWO OCEAN PLATEAU 9240 4.3 2.6 165 3.2 2.7 119 WHISKEY CREEK 6800 .1 .6 17 3.0 1.9 158 WHITE MILL 8700 3.5 1.6 219 3.3 2.4 138 WOLVERINE 7650 .6 .3 200 1.8 1.6 112 ----- ----- Basin wide percent of average 154 155 WIND RIVER BURROUGHS CREEK 8750 2.8 .8 350 2.8 1.4 200 COLD SPRINGS 9630 2.6 .9 289 2.8 1.7 165 DEER PARK 9700 4.6 1.8 256 5.5 2.2 250 HOBBS PARK 10100 5.0 2.1 238 4.6 1.9 242 LITTLE WARM 9370 1.5 .9 167 2.3 1.5 153 SOUTH PASS 9040 3.9 1.3 300 4.7 1.8 261 ST. LAWRENCE ALT 8620 1.9 .8 237 3.6 1.5 240 TOGWOTEE PASS 9580 3.9 2.2 177 4.0 2.5 160 TOWNSEND CREEK 8700 3.3 1.0 330 4.7 1.9 247 ----- ----- Basin wide percent of average 250 213 BIGHORN BASIN BALD MTN. 9380 3.6 2.4 150 3.1 2.2 141 BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125 BLACKWATER 9780 4.1 2.8 146 3.4 2.4 142 BONE SPRINGS DIV 9350 3.0 2.3 130 2.8 2.3 122 EVENING STAR 9200 4.4 2.2 200 5.0 2.4 208 GRAVE SPRINGS 8550 2.3 1.1 209 3.4 1.9 179 KIRWIN 9550 2.8 1.7 165 2.4 1.6 150 MARQUETTE 8760 2.6 1.8 144 2.8 2.1 133 MIDDLE POWDER 7760 2.5 1.2 208 2.9 2.3 126 OWL CREEK 8975 2.2 .8 275 1.9 1.0 190 POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122 SHELL CREEK 9580 3.2 2.5 128 2.8 1.8 156 SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122 SYLVAN ROAD 7120 .4 .4 100 2.5 1.8 139 TIMBER CREEK 7950 1.1 1.0 110 2.4 1.4 171 YOUNTS PEAK 8350 1.6 1.2 133 2.0 1.6 125 ----- ----- Basin wide percent of average 154 146 SHOSHONE RIVER BLACKWATER 9780 4.1 2.8 146 3.4 2.4 142 EVENING STAR 9200 4.4 2.2 200 5.0 2.4 208 KIRWIN 9550 2.8 1.7 165 2.4 1.6 150 MARQUETTE 8760 2.6 1.8 144 2.8 2.1 133 SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122 SYLVAN ROAD 7120 .4 .4 100 2.5 1.8 139 YOUNTS PEAK 8350 1.6 1.2 133 2.0 1.6 125 ----- ----- Basin wide percent of average 144 147 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125 BIG GOOSE 7990 1.4 .7 200 2.8 2.0 140 BONE SPRINGS DIV 9350 3.0 2.3 130 2.8 2.3 122 BURGESS JUNCTION 7880 2.9 1.3 223 3.3 2.0 165 CLOUD PEAK RESERVOIR 9860 2.9 1.4 207 3.2 2.4 133 DOME LAKE 8880 2.0 1.6 125 2.9 2.2 132 GRAVE SPRINGS 8550 2.3 1.1 209 3.4 1.9 179 HANSEN SAWMILL 8360 1.1 .8 138 2.0 1.7 118 MIDDLE POWDER 7760 2.5 1.2 208 2.9 2.3 126 POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122 SUCKER CREEK 8880 3.2 1.2 267 3.7 2.2 168 TIE CREEK 6870 1.1 .8 138 3.7 2.3 161 ----- ----- Basin wide percent of average 181 141 BELLE FOURCHE BLIND PARK 6890 .7 .4 175 3.4 2.3 148 COLE CANYON 5910 .5 .8 62 3.8 1.7 224 NORTH RAPID CREEK 6130 .8 .4 200 3.4 2.3 148 ----- ----- Basin wide percent of average 125 168 UPPER N. PLATTE RIVER COLUMBINE 9160 .8 .6 133 3.4 2.1 162 DIVIDE PEAK 8880 2.2 1.5 147 4.8 2.4 200 ELK RIVER 8700 .3 .5 60 2.8 2.0 140 JOE WRIGHT 10120 3.6 2.2 164 4.2 3.0 140 NORTH FRENCH CREEK 10130 6.7 2.8 239 7.0 2.9 241 OLD BATTLE 10000 6.7 2.6 258 6.9 3.1 223 SAGE CREEK BASIN 7850 1.0 .9 111 2.6 1.4 186 SOUTH BRUSH CREEK 8440 .8 .6 133 3.8 2.4 158 TOWER 10500 6.7 2.9 231 6.8 3.4 200 WEBBER SPRINGS 9250 3.1 1.5 207 5.8 2.7 215 WILLOW CREEK PASS 9540 .6 1.0 60 2.3 1.8 128 ----- ----- Basin wide percent of average 190 185 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.5 1.9 237 5.4 2.1 257 CASPER MTN. 7900 2.6 1.5 173 3.7 2.2 168 DEADMAN HILL 10220 1.0 1.9 53 4.3 2.2 195 DEER PARK 9700 4.6 1.8 256 5.5 2.2 250 LAPRELE CREEK 8375 1.4 .8 175 3.3 1.7 194 RENO HILL 8400 3.2 1.5 213 4.2 2.3 183 ROACH 9700 3.0 .9 333 4.5 2.1 214 SAND LAKE 10050 7.0 2.8 250 7.2 2.7 267 SOUTH PASS 9040 3.9 1.3 300 4.7 1.8 261 WINDY PEAK 7900 1.5 .5 300 3.5 1.5 233 ----- ----- Basin wide percent of average 219 223 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .4 0 1.8 1.7 106 DIVIDE PEAK 8880 2.2 1.5 147 4.8 2.4 200 OLD BATTLE 10000 6.7 2.6 258 6.9 3.1 223 SANDSTONE RS 8150 .0 .4 0 2.1 2.1 100 WHISKEY PARK 8950 2.0 1.4 143 5.6 2.6 215 ----- ----- Basin wide percent of average 173 178 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 1.0 290 3.1 1.6 194 BLIND BULL SUM 8650 2.5 1.3 192 2.4 1.9 126 EAST RIM DIVIDE 7930 .1 .5 20 1.8 1.2 150 ELKHART PARK G.S. 9400 2.1 .7 300 2.7 1.8 150 GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131 GUNSIGHT PASS 9820 1.5 -M * 2.9 -M * KENDALL R.S. 7740 .2 .5 40 2.0 1.4 143 LOOMIS PARK 8240 .3 .7 43 2.4 1.6 150 NEW FORK LAKE 8340 .1 .4 25 1.4 1.4 100 SNIDER BASIN 8060 .9 .6 150 2.5 1.4 179 SPRING CREEK DIVIDE 9000 3.1 1.2 258 3.8 2.2 173 TRIPLE PEAK 8500 2.6 .9 289 4.1 1.9 216 ----- ----- Basin wide percent of average 186 157 LOWER GREEN RIVER HAMS FORK 7840 .4 .3 133 3.0 1.2 250 HEWINTA 9519 .7 .8 87 2.2 2.1 105 HICKERSON PARK 9145 2.0 .4 500 2.8 1.5 187 HOLE-IN-ROCK 9150 1.8 .4 450 3.2 1.5 213 INDIAN CREEK 9425 4.2 1.2 350 4.4 2.2 200 KELLEY R.S. 8180 -M .8 * -M 1.9 * STEEL CREEK PARK 10200 .5 1.4 36 2.8 2.1 133 ----- ----- Basin wide percent of average 213 174 UPPER BEAR RIVER BUG LAKE 7950 .3 1.1 27 3.2 2.1 152 HAYDEN FORK 9212 .6 .8 75 2.6 2.1 124 KELLEY R.S. 8180 -M .8 * -M 1.9 * LILY LAKE 9156 .5 .9 56 2.1 2.1 100 MONTE CRISTO 8960 1.8 1.4 129 3.8 2.5 152 SALT RIVER SUMMIT 7760 .0 .3 0 2.3 1.7 135 TRIAL LAKE 9992 2.3 1.7 135 2.8 2.4 117 ----- ----- Basin wide percent of average 89 130 ----------------------------------------------------------------------------- -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.