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 SATURDAY: OCTOBER 31 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .5 .6 83 2.5 1.9 132 COTTONWOOD CREEK 7670 .5 .8 62 4.3 2.9 148 GRAND TARGHEE 9260 6.0 -M * 5.5 -M * GRANITE CREEK 6770 .2 .5 40 2.6 1.7 153 GRASSY LAKE 7265 1.1 1.3 85 3.8 3.2 119 GROS VENTRE SUMMIT 8750 2.1 1.3 162 2.3 1.8 128 GUNSIGHT PASS 9820 1.8 -M * 3.0 -M * LEWIS LAKE DIVIDE 7850 .7 1.1 64 3.7 3.0 123 PHILLIPS BENCH 8200 1.3 1.3 100 3.4 2.3 148 SALT RIVER SUMMIT 7760 .3 .3 100 2.6 1.9 137 SNAKE RIVER STATION 6920 .5 .5 100 3.1 2.2 141 SPRING CREEK DIVIDE 9000 3.4 1.4 243 4.1 2.4 171 THUMB DIVIDE 7980 1.0 .7 143 4.0 2.0 200 TOGWOTEE PASS 9580 4.2 2.4 175 4.3 2.7 159 TWO OCEAN PLATEAU 9240 4.8 2.9 166 3.7 2.9 128 WILLOW CREEK 8380 2.1 1.7 124 5.5 3.6 153 ----- ----- Basin wide percent of average 135 145 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 3.6 2.5 144 2.8 2.0 140 BLACK BEAR 8170 4.6 2.6 177 5.9 3.3 179 CANYON 7870 1.4 .6 233 2.9 1.7 171 FISHER CREEK 9100 4.6 2.5 184 5.2 3.1 168 MADISON PLATEAU 7750 2.3 1.5 153 5.1 2.4 212 NORTHEAST ENTRANCE 7350 .5 .3 167 2.5 1.5 167 PARKER PEAK 9400 4.5 2.5 180 3.7 2.2 168 SYLVAN LAKE 8420 1.5 1.7 88 3.0 2.5 120 THUMB DIVIDE 7980 1.0 .7 143 4.0 2.0 200 TWO OCEAN PLATEAU 9240 4.8 2.9 166 3.7 2.9 128 WHISKEY CREEK 6800 .2 .7 29 3.3 2.1 157 WHITE MILL 8700 3.7 1.8 206 3.6 2.6 138 WOLVERINE 7650 .7 .5 140 2.2 1.8 122 ----- ----- Basin wide percent of average 161 159 WIND RIVER BURROUGHS CREEK 8750 3.0 .9 333 2.9 1.6 181 COLD SPRINGS 9630 2.8 1.0 280 3.0 1.9 158 DEER PARK 9700 4.7 2.1 224 5.8 2.4 242 HOBBS PARK 10100 5.1 2.2 232 4.9 2.0 245 LITTLE WARM 9370 1.9 1.0 190 2.4 1.7 141 SOUTH PASS 9040 4.0 1.5 267 4.9 2.0 245 ST. LAWRENCE ALT 8620 2.1 .9 233 3.8 1.7 224 TOGWOTEE PASS 9580 4.2 2.4 175 4.3 2.7 159 TOWNSEND CREEK 8700 3.4 1.0 340 4.8 2.1 229 ----- ----- Basin wide percent of average 240 203 BIGHORN BASIN BALD MTN. 9380 3.9 2.7 144 3.3 2.3 143 BEAR TRAP MEADOW 8200 1.2 .6 200 2.1 1.7 124 BLACKWATER 9780 4.5 3.0 150 3.8 2.6 146 BONE SPRINGS DIV 9350 3.3 2.5 132 3.2 2.4 133 EVENING STAR 9200 4.6 2.5 184 5.5 2.7 204 GRAVE SPRINGS 8550 2.6 1.1 236 3.6 2.1 171 KIRWIN 9550 3.0 1.8 167 2.5 1.8 139 MARQUETTE 8760 2.9 1.9 153 2.4 2.2 109 MIDDLE POWDER 7760 2.8 1.3 215 3.1 2.5 124 OWL CREEK 8975 2.4 .8 300 2.0 1.1 182 POWDER RIVER PASS 9480 2.0 1.2 167 2.4 1.9 126 SHELL CREEK 9580 3.5 2.6 135 2.9 2.0 145 SYLVAN LAKE 8420 1.5 1.7 88 3.0 2.5 120 SYLVAN ROAD 7120 .5 .5 100 2.6 2.0 130 TIMBER CREEK 7950 1.4 1.1 127 2.5 1.6 156 YOUNTS PEAK 8350 2.1 1.3 162 2.2 1.8 122 ----- ----- Basin wide percent of average 159 142 SHOSHONE RIVER BLACKWATER 9780 4.5 3.0 150 3.8 2.6 146 EVENING STAR 9200 4.6 2.5 184 5.5 2.7 204 KIRWIN 9550 3.0 1.8 167 2.5 1.8 139 MARQUETTE 8760 2.9 1.9 153 2.4 2.2 109 SYLVAN LAKE 8420 1.5 1.7 88 3.0 2.5 120 SYLVAN ROAD 7120 .5 .5 100 2.6 2.0 130 YOUNTS PEAK 8350 2.1 1.3 162 2.2 1.8 122 ----- ----- Basin wide percent of average 150 141 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 .6 200 2.1 1.7 124 BIG GOOSE 7990 1.8 .8 225 3.2 2.1 152 BONE SPRINGS DIV 9350 3.3 2.5 132 3.2 2.4 133 BURGESS JUNCTION 7880 3.1 1.5 207 3.7 2.2 168 CLOUD PEAK RESERVOIR 9860 3.3 1.5 220 3.3 2.5 132 DOME LAKE 8880 2.3 1.8 128 3.2 2.4 133 GRAVE SPRINGS 8550 2.6 1.1 236 3.6 2.1 171 HANSEN SAWMILL 8360 1.3 .8 162 2.1 1.8 117 MIDDLE POWDER 7760 2.8 1.3 215 3.1 2.5 124 POWDER RIVER PASS 9480 2.0 1.2 167 2.4 1.9 126 SUCKER CREEK 8880 3.5 1.4 250 4.2 2.3 183 TIE CREEK 6870 1.4 .9 156 4.0 2.5 160 ----- ----- Basin wide percent of average 186 144 BELLE FOURCHE BLIND PARK 6890 1.5 .5 300 4.0 2.5 160 COLE CANYON 5910 .8 1.0 80 4.1 1.8 228 NORTH RAPID CREEK 6130 1.3 .5 260 3.9 2.5 156 ----- ----- Basin wide percent of average 180 176 UPPER N. PLATTE RIVER COLUMBINE 9160 1.3 .7 186 4.1 2.3 178 DIVIDE PEAK 8880 2.6 1.7 153 5.3 2.6 204 ELK RIVER 8700 .4 .6 67 3.2 2.1 152 JOE WRIGHT 10120 4.3 2.4 179 5.0 3.3 152 NORTH FRENCH CREEK 10130 6.9 3.0 230 7.2 3.2 225 OLD BATTLE 10000 7.2 2.8 257 7.6 3.4 224 SAGE CREEK BASIN 7850 1.3 1.0 130 2.8 1.5 187 SOUTH BRUSH CREEK 8440 1.0 .7 143 4.1 2.5 164 TOWER 10500 7.3 3.3 221 7.4 3.8 195 WEBBER SPRINGS 9250 3.5 1.8 194 6.2 2.9 214 WILLOW CREEK PASS 9540 1.0 1.1 91 3.0 1.9 158 ----- ----- Basin wide percent of average 193 189 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.8 2.1 229 5.6 2.3 243 CASPER MTN. 7900 3.3 1.7 194 3.9 2.4 162 DEADMAN HILL 10220 1.3 2.1 62 4.7 2.4 196 DEER PARK 9700 4.7 2.1 224 5.8 2.4 242 LAPRELE CREEK 8375 1.6 1.0 160 3.6 1.8 200 RENO HILL 8400 3.8 1.7 224 4.9 2.4 204 ROACH 9700 3.5 1.1 318 5.1 2.2 232 SAND LAKE 10050 7.6 3.1 245 7.8 2.9 269 SOUTH PASS 9040 4.0 1.5 267 4.9 2.0 245 WINDY PEAK 7900 1.6 .5 320 3.7 1.6 231 ----- ----- Basin wide percent of average 214 223 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .5 0 2.1 1.8 117 DIVIDE PEAK 8880 2.6 1.7 153 5.3 2.6 204 OLD BATTLE 10000 7.2 2.8 257 7.6 3.4 224 SANDSTONE RS 8150 -M .5 * 2.5 2.2 114 WHISKEY PARK 8950 2.2 1.6 138 5.9 2.8 211 ----- ----- Basin wide percent of average 182 183 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.1 1.2 258 3.3 1.7 194 BLIND BULL SUM 8650 2.6 1.5 173 2.4 2.1 114 EAST RIM DIVIDE 7930 .3 .6 50 2.0 1.3 154 ELKHART PARK G.S. 9400 2.4 .8 300 2.9 1.9 153 GROS VENTRE SUMMIT 8750 2.1 1.3 162 2.3 1.8 128 GUNSIGHT PASS 9820 1.8 -M * 3.0 -M * KENDALL R.S. 7740 .4 .6 67 2.1 1.5 140 LOOMIS PARK 8240 .5 .9 56 2.5 1.7 147 NEW FORK LAKE 8340 .4 .5 80 2.3 1.5 153 SNIDER BASIN 8060 1.2 .7 171 2.9 1.5 193 SPRING CREEK DIVIDE 9000 3.4 1.4 243 4.1 2.4 171 TRIPLE PEAK 8500 2.7 1.1 245 4.5 2.1 214 ----- ----- Basin wide percent of average 180 161 LOWER GREEN RIVER HAMS FORK 7840 .5 .4 125 3.1 1.4 221 HEWINTA 9519 .8 .8 100 2.4 2.3 104 HICKERSON PARK 9145 2.5 .4 625 3.1 1.6 194 HOLE-IN-ROCK 9150 1.8 .5 360 3.3 1.6 206 INDIAN CREEK 9425 4.5 1.4 321 5.0 2.4 208 KELLEY R.S. 8180 1.3 .9 144 3.8 2.1 181 STEEL CREEK PARK 10200 1.1 1.6 69 3.0 2.2 136 ----- ----- Basin wide percent of average 208 174 UPPER BEAR RIVER BUG LAKE 7950 .5 1.2 42 3.3 2.3 143 HAYDEN FORK 9212 .7 .8 87 2.8 2.3 122 KELLEY R.S. 8180 1.3 .9 144 3.8 2.1 181 LILY LAKE 9156 .7 1.0 70 2.3 2.3 100 MONTE CRISTO 8960 1.9 1.5 127 4.1 2.7 152 SALT RIVER SUMMIT 7760 .3 .3 100 2.6 1.9 137 TRIAL LAKE 9992 2.4 1.9 126 2.9 2.6 112 ----- ----- Basin wide percent of average 103 135 ----------------------------------------------------------------------------- -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.