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 28 , 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 .4 25 2.6 1.7 153 COTTONWOOD CREEK 7670 -M .7 * -M 2.5 * GRAND TARGHEE 9260 5.8 -M * 5.0 -M * GRANITE CREEK 6770 .2 .3 67 2.5 1.5 167 GRASSY LAKE 7265 .8 1.0 80 3.4 2.8 121 GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131 GUNSIGHT PASS 9820 1.6 -M * 2.8 -M * LEWIS LAKE DIVIDE 7850 .6 .8 75 3.4 2.6 131 PHILLIPS BENCH 8200 1.0 1.1 91 3.2 1.9 168 SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.6 144 SNAKE RIVER STATION 6920 .2 .4 50 3.0 1.9 158 SPRING CREEK DIVIDE 9000 3.1 1.1 282 3.8 2.1 181 THUMB DIVIDE 7980 .6 .6 100 3.8 1.8 211 TOGWOTEE PASS 9580 3.9 2.1 186 4.0 2.4 167 TWO OCEAN PLATEAU 9240 4.2 2.5 168 3.4 2.6 131 WILLOW CREEK 8380 2.1 1.4 150 5.4 3.1 174 ----- ----- Basin wide percent of average 143 155 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 3.1 2.3 135 2.5 1.8 139 BLACK BEAR 8170 4.2 2.2 191 5.5 2.8 196 CANYON 7870 1.1 .5 220 2.4 1.5 160 FISHER CREEK 9100 4.1 2.2 186 4.4 2.7 163 MADISON PLATEAU 7750 1.9 1.3 146 4.7 2.1 224 NORTHEAST ENTRANCE 7350 .1 .2 50 2.4 1.3 185 PARKER PEAK 9400 3.8 2.2 173 3.0 2.0 150 SYLVAN LAKE 8420 .9 1.5 60 2.7 2.2 123 THUMB DIVIDE 7980 .6 .6 100 3.8 1.8 211 TWO OCEAN PLATEAU 9240 4.2 2.5 168 3.4 2.6 131 WHISKEY CREEK 6800 .0 .6 0 2.9 1.8 161 WHITE MILL 8700 3.4 1.6 212 3.1 2.3 135 WOLVERINE 7650 .5 .3 167 1.7 1.6 106 ----- ----- Basin wide percent of average 155 160 WIND RIVER BURROUGHS CREEK 8750 2.8 .7 400 2.8 1.4 200 COLD SPRINGS 9630 2.7 .9 300 2.8 1.6 175 DEER PARK 9700 3.6 1.8 200 4.6 2.1 219 HOBBS PARK 10100 3.6 2.0 180 3.4 1.8 189 LITTLE WARM 9370 1.4 .9 156 2.2 1.5 147 SOUTH PASS 9040 3.0 1.3 231 3.9 1.7 229 ST. LAWRENCE ALT 8620 1.0 .7 143 2.9 1.5 193 TOGWOTEE PASS 9580 3.9 2.1 186 4.0 2.4 167 TOWNSEND CREEK 8700 2.3 1.0 230 3.6 1.8 200 ----- ----- Basin wide percent of average 213 191 BIGHORN BASIN BALD MTN. 9380 3.4 2.4 142 3.0 2.1 143 BEAR TRAP MEADOW 8200 .8 .5 160 1.8 1.5 120 BLACKWATER 9780 4.0 2.7 148 3.4 2.3 148 BONE SPRINGS DIV 9350 2.6 2.2 118 2.6 2.2 118 EVENING STAR 9200 4.2 2.1 200 4.9 2.3 213 GRAVE SPRINGS 8550 2.0 1.1 182 3.1 1.8 172 KIRWIN 9550 2.5 1.6 156 2.1 1.5 140 MARQUETTE 8760 2.0 1.7 118 2.3 2.0 115 MIDDLE POWDER 7760 2.2 1.2 183 2.5 2.3 109 OWL CREEK 8975 2.2 .8 275 1.8 1.0 180 POWDER RIVER PASS 9480 1.9 1.0 190 2.0 1.7 118 SHELL CREEK 9580 3.1 2.4 129 2.7 1.7 159 SYLVAN LAKE 8420 .9 1.5 60 2.7 2.2 123 SYLVAN ROAD 7120 .4 .3 133 2.4 1.6 150 TIMBER CREEK 7950 .9 .9 100 2.1 1.4 150 YOUNTS PEAK 8350 1.7 1.2 142 2.0 1.6 125 ----- ----- Basin wide percent of average 147 142 SHOSHONE RIVER BLACKWATER 9780 4.0 2.7 148 3.4 2.3 148 EVENING STAR 9200 4.2 2.1 200 4.9 2.3 213 KIRWIN 9550 2.5 1.6 156 2.1 1.5 140 MARQUETTE 8760 2.0 1.7 118 2.3 2.0 115 SYLVAN LAKE 8420 .9 1.5 60 2.7 2.2 123 SYLVAN ROAD 7120 .4 .3 133 2.4 1.6 150 YOUNTS PEAK 8350 1.7 1.2 142 2.0 1.6 125 ----- ----- Basin wide percent of average 141 147 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .5 160 1.8 1.5 120 BIG GOOSE 7990 1.0 .7 143 2.4 1.9 126 BONE SPRINGS DIV 9350 2.6 2.2 118 2.6 2.2 118 BURGESS JUNCTION 7880 2.5 1.2 208 3.1 1.9 163 CLOUD PEAK RESERVOIR 9860 2.6 1.4 186 2.9 2.3 126 DOME LAKE 8880 1.7 1.6 106 2.5 2.2 114 GRAVE SPRINGS 8550 2.0 1.1 182 3.1 1.8 172 HANSEN SAWMILL 8360 1.2 .8 150 1.9 1.6 119 MIDDLE POWDER 7760 2.2 1.2 183 2.5 2.3 109 POWDER RIVER PASS 9480 1.9 1.0 190 2.0 1.7 118 SUCKER CREEK 8880 2.7 1.1 245 3.2 2.1 152 TIE CREEK 6870 .6 .9 67 3.2 2.2 145 ----- ----- Basin wide percent of average 159 132 BELLE FOURCHE BLIND PARK 6890 .4 .4 100 3.1 2.2 141 COLE CANYON 5910 .1 .8 12 3.3 1.6 206 NORTH RAPID CREEK 6130 .5 .4 125 3.1 2.2 141 ----- ----- Basin wide percent of average 62 158 UPPER N. PLATTE RIVER COLUMBINE 9160 .5 .5 100 3.3 2.0 165 DIVIDE PEAK 8880 1.0 1.5 67 3.9 2.3 170 ELK RIVER 8700 .3 .4 75 2.8 1.9 147 JOE WRIGHT 10120 3.4 2.0 170 3.9 2.9 134 NORTH FRENCH CREEK 10130 6.6 2.6 254 6.9 2.8 246 OLD BATTLE 10000 6.0 2.4 250 6.4 3.0 213 SAGE CREEK BASIN 7850 .2 .9 22 2.5 1.4 179 SOUTH BRUSH CREEK 8440 .8 .5 160 3.9 2.3 170 TOWER 10500 6.6 2.7 244 6.5 3.3 197 WEBBER SPRINGS 9250 2.1 1.4 150 4.9 2.6 188 WILLOW CREEK PASS 9540 .9 .9 100 2.3 1.7 135 ----- ----- Basin wide percent of average 180 181 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.2 1.8 233 4.9 2.0 245 CASPER MTN. 7900 .8 1.4 57 3.0 2.2 136 DEADMAN HILL 10220 .6 1.9 32 3.7 2.1 176 DEER PARK 9700 3.6 1.8 200 4.6 2.1 219 LAPRELE CREEK 8375 .6 .8 75 2.6 1.6 162 RENO HILL 8400 1.8 1.5 120 3.0 2.2 136 ROACH 9700 2.3 .9 256 3.9 2.0 195 SAND LAKE 10050 6.0 2.7 222 6.1 2.6 235 SOUTH PASS 9040 3.0 1.3 231 3.9 1.7 229 WINDY PEAK 7900 .8 .4 200 2.7 1.5 180 ----- ----- Basin wide percent of average 163 192 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .4 25 1.9 1.6 119 DIVIDE PEAK 8880 1.0 1.5 67 3.9 2.3 170 OLD BATTLE 10000 6.0 2.4 250 6.4 3.0 213 SANDSTONE RS 8150 -M .4 * 2.1 2.0 105 WHISKEY PARK 8950 1.7 1.3 131 5.1 2.5 204 ----- ----- Basin wide percent of average 157 170 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 1.0 290 3.1 1.5 207 BLIND BULL SUM 8650 2.5 1.2 208 2.4 1.8 133 EAST RIM DIVIDE 7930 .2 .4 50 1.9 1.1 173 ELKHART PARK G.S. 9400 2.1 .7 300 2.7 1.7 159 GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131 GUNSIGHT PASS 9820 1.6 -M * 2.8 -M * KENDALL R.S. 7740 .1 .5 20 2.0 1.3 154 LOOMIS PARK 8240 .4 .7 57 2.4 1.5 160 NEW FORK LAKE 8340 .1 .4 25 1.4 1.3 108 SNIDER BASIN 8060 .8 .5 160 2.5 1.3 192 SPRING CREEK DIVIDE 9000 3.1 1.1 282 3.8 2.1 181 TRIPLE PEAK 8500 2.5 .9 278 4.1 1.8 228 ----- ----- Basin wide percent of average 193 167 LOWER GREEN RIVER HAMS FORK 7840 .3 .3 100 3.0 1.2 250 HEWINTA 9519 .0 .7 0 1.6 2.0 80 HICKERSON PARK 9145 .3 .3 100 1.5 1.5 100 HOLE-IN-ROCK 9150 .5 .4 125 2.0 1.4 143 INDIAN CREEK 9425 4.2 1.1 382 4.3 2.1 205 KELLEY R.S. 8180 -M .7 * -M 1.8 * STEEL CREEK PARK 10200 .0 1.4 0 1.9 2.0 95 ----- ----- Basin wide percent of average 126 140 UPPER BEAR RIVER BUG LAKE 7950 .0 1.0 0 2.8 2.0 140 HAYDEN FORK 9212 .4 .7 57 2.5 2.0 125 KELLEY R.S. 8180 -M .7 * -M 1.8 * LILY LAKE 9156 .4 .8 50 1.9 2.1 90 MONTE CRISTO 8960 1.7 1.3 131 3.5 2.4 146 SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.6 144 TRIAL LAKE 9992 2.2 1.6 138 2.7 2.3 117 ----- ----- Basin wide percent of average 84 127 ----------------------------------------------------------------------------- -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.