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 22 , 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 1.2 150 COTTONWOOD CREEK 7670 .0 .3 0 3.2 1.8 178 GRAND TARGHEE 9260 4.2 -M * 3.8 -M * GRANITE CREEK 6770 .1 .2 50 1.7 1.1 155 GRASSY LAKE 7265 .2 .6 33 2.3 2.0 115 GROS VENTRE SUMMIT 8750 1.6 .8 200 1.9 1.2 158 GUNSIGHT PASS 9820 1.4 -M * 2.6 -M * LEWIS LAKE DIVIDE 7850 .4 .4 100 2.4 1.8 133 PHILLIPS BENCH 8200 .0 .6 0 2.0 1.4 143 SALT RIVER SUMMIT 7760 .0 .1 0 2.2 1.2 183 SNAKE RIVER STATION 6920 .0 .2 0 1.9 1.4 136 SPRING CREEK DIVIDE 9000 2.7 .7 386 3.4 1.4 243 THUMB DIVIDE 7980 .0 .3 0 3.1 1.3 238 TOGWOTEE PASS 9580 3.0 1.5 200 3.0 1.7 176 TWO OCEAN PLATEAU 9240 2.9 1.8 161 2.2 1.9 116 WILLOW CREEK 8380 1.4 .8 175 4.3 2.3 187 ----- ----- Basin wide percent of average 145 163 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.5 1.7 147 2.0 1.3 154 BLACK BEAR 8170 3.0 1.1 273 4.3 2.0 215 CANYON 7870 .6 .3 200 2.0 1.1 182 FISHER CREEK 9100 2.8 1.4 200 3.0 2.0 150 MADISON PLATEAU 7750 1.3 .6 217 4.0 1.6 250 NORTHEAST ENTRANCE 7350 .0 .1 0 1.8 1.0 180 PARKER PEAK 9400 2.7 1.8 150 2.0 1.6 125 SYLVAN LAKE 8420 .2 1.1 18 1.8 1.6 112 THUMB DIVIDE 7980 .0 .3 0 3.1 1.3 238 TWO OCEAN PLATEAU 9240 2.9 1.8 161 2.2 1.9 116 WHISKEY CREEK 6800 .2 .2 100 2.6 1.3 200 WHITE MILL 8700 2.4 1.0 240 2.2 1.7 129 WOLVERINE 7650 .2 .2 100 1.3 1.2 108 ----- ----- Basin wide percent of average 162 165 WIND RIVER BURROUGHS CREEK 8750 2.2 .5 440 2.2 1.0 220 COLD SPRINGS 9630 2.3 .6 383 2.7 1.2 225 DEER PARK 9700 2.9 1.1 264 3.7 1.6 231 HOBBS PARK 10100 3.3 1.4 236 3.1 1.4 221 LITTLE WARM 9370 1.4 .7 200 2.0 1.1 182 SOUTH PASS 9040 2.5 .7 357 3.3 1.3 254 ST. LAWRENCE ALT 8620 1.1 .5 220 2.9 1.1 264 TOGWOTEE PASS 9580 3.0 1.5 200 3.0 1.7 176 TOWNSEND CREEK 8700 2.1 .6 350 3.1 1.4 221 ----- ----- Basin wide percent of average 274 220 BIGHORN BASIN BALD MTN. 9380 2.4 1.9 126 2.1 1.6 131 BEAR TRAP MEADOW 8200 .7 .4 175 1.7 1.2 142 BLACKWATER 9780 3.1 2.1 148 2.5 1.7 147 BONE SPRINGS DIV 9350 1.4 1.8 78 1.8 1.7 106 EVENING STAR 9200 3.0 1.6 188 3.4 1.7 200 GRAVE SPRINGS 8550 1.6 .8 200 2.5 1.5 167 KIRWIN 9550 2.3 1.2 192 2.0 1.1 182 MARQUETTE 8760 2.2 1.3 169 2.3 1.5 153 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.8 139 OWL CREEK 8975 2.0 .6 333 1.8 .8 225 POWDER RIVER PASS 9480 1.5 .8 188 1.7 1.3 131 SHELL CREEK 9580 2.3 2.0 115 1.9 1.4 136 SYLVAN LAKE 8420 .2 1.1 18 1.8 1.6 112 SYLVAN ROAD 7120 .0 .2 0 1.4 1.1 127 TIMBER CREEK 7950 .9 .6 150 1.9 1.0 190 YOUNTS PEAK 8350 1.0 .8 125 1.6 1.2 133 ----- ----- Basin wide percent of average 145 148 SHOSHONE RIVER BLACKWATER 9780 3.1 2.1 148 2.5 1.7 147 EVENING STAR 9200 3.0 1.6 188 3.4 1.7 200 KIRWIN 9550 2.3 1.2 192 2.0 1.1 182 MARQUETTE 8760 2.2 1.3 169 2.3 1.5 153 SYLVAN LAKE 8420 .2 1.1 18 1.8 1.6 112 SYLVAN ROAD 7120 .0 .2 0 1.4 1.1 127 YOUNTS PEAK 8350 1.0 .8 125 1.6 1.2 133 ----- ----- Basin wide percent of average 142 152 POWDER-TONGUE BEAR TRAP MEADOW 8200 .7 .4 175 1.7 1.2 142 BIG GOOSE 7990 .0 .5 0 1.9 1.5 127 BONE SPRINGS DIV 9350 1.4 1.8 78 1.8 1.7 106 BURGESS JUNCTION 7880 1.5 1.0 150 2.1 1.5 140 CLOUD PEAK RESERVOIR 9860 1.8 1.0 180 2.6 1.8 144 DOME LAKE 8880 1.1 1.2 92 2.2 1.7 129 GRAVE SPRINGS 8550 1.6 .8 200 2.5 1.5 167 HANSEN SAWMILL 8360 1.0 .4 250 1.9 1.2 158 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.8 139 POWDER RIVER PASS 9480 1.5 .8 188 1.7 1.3 131 SUCKER CREEK 8880 1.6 .9 178 2.0 1.6 125 TIE CREEK 6870 .1 .4 25 2.3 1.8 128 ----- ----- Basin wide percent of average 138 135 BELLE FOURCHE BLIND PARK 6890 .0 .1 0 2.4 1.7 141 COLE CANYON 5910 .0 .4 0 2.8 1.2 233 NORTH RAPID CREEK 6130 .2 .2 100 2.4 1.7 141 ----- ----- Basin wide percent of average 29 165 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .2 0 2.4 1.4 171 DIVIDE PEAK 8880 .1 1.0 10 2.9 1.8 161 ELK RIVER 8700 .0 .3 0 2.1 1.4 150 JOE WRIGHT 10120 .9 1.4 64 2.3 2.2 105 NORTH FRENCH CREEK 10130 5.2 2.0 260 5.4 2.0 270 OLD BATTLE 10000 5.1 1.7 300 5.3 2.2 241 SAGE CREEK BASIN 7850 .0 .6 0 2.1 1.0 210 SOUTH BRUSH CREEK 8440 .0 .3 0 3.1 1.7 182 TOWER 10500 5.1 1.7 300 5.1 2.3 222 WEBBER SPRINGS 9250 1.4 .9 156 4.1 1.9 216 WILLOW CREEK PASS 9540 .0 .6 0 1.4 1.3 108 ----- ----- Basin wide percent of average 166 189 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.4 1.3 262 4.1 1.5 273 CASPER MTN. 7900 .0 1.0 0 2.2 1.6 138 DEADMAN HILL 10220 .2 1.4 14 2.8 1.6 175 DEER PARK 9700 2.9 1.1 264 3.7 1.6 231 LAPRELE CREEK 8375 .0 .5 0 1.9 1.2 158 RENO HILL 8400 .5 1.1 45 1.8 1.6 112 ROACH 9700 1.3 .5 260 2.8 1.5 187 SAND LAKE 10050 4.8 1.9 253 4.8 1.9 253 SOUTH PASS 9040 2.5 .7 357 3.3 1.3 254 WINDY PEAK 7900 .3 .2 150 2.1 1.1 191 ----- ----- Basin wide percent of average 164 198 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .2 0 1.2 1.2 100 DIVIDE PEAK 8880 .1 1.0 10 2.9 1.8 161 OLD BATTLE 10000 5.1 1.7 300 5.3 2.2 241 SANDSTONE RS 8150 -M .2 * 1.6 1.5 107 WHISKEY PARK 8950 1.1 .9 122 4.1 1.9 216 ----- ----- Basin wide percent of average 166 176 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 .7 400 2.9 1.1 264 BLIND BULL SUM 8650 1.8 .8 225 1.9 1.3 146 EAST RIM DIVIDE 7930 .0 .2 0 1.8 .8 225 ELKHART PARK G.S. 9400 2.2 .4 550 2.6 1.3 200 GROS VENTRE SUMMIT 8750 1.6 .8 200 1.9 1.2 158 GUNSIGHT PASS 9820 1.4 -M * 2.6 -M * KENDALL R.S. 7740 .1 .2 50 1.9 1.0 190 LOOMIS PARK 8240 .1 .4 25 2.0 1.1 182 NEW FORK LAKE 8340 .0 .2 0 1.4 1.0 140 SNIDER BASIN 8060 .9 .3 300 2.4 .9 267 SPRING CREEK DIVIDE 9000 2.7 .7 386 3.4 1.4 243 TRIPLE PEAK 8500 1.8 .5 360 3.5 1.3 269 ----- ----- Basin wide percent of average 269 207 LOWER GREEN RIVER HAMS FORK 7840 .2 .1 200 2.7 .9 300 HEWINTA 9519 .0 .6 0 1.2 1.5 80 HICKERSON PARK 9145 .1 .2 50 1.1 1.1 100 HOLE-IN-ROCK 9150 .0 .2 0 1.5 1.1 136 INDIAN CREEK 9425 4.1 .7 586 4.3 1.5 287 KELLEY R.S. 8180 1.0 .4 250 3.2 1.3 246 STEEL CREEK PARK 10200 1.2 1.0 120 1.3 1.5 87 ----- ----- Basin wide percent of average 206 172 UPPER BEAR RIVER BUG LAKE 7950 .1 .7 14 2.6 1.5 173 HAYDEN FORK 9212 .1 .5 20 2.0 1.5 133 KELLEY R.S. 8180 1.0 .4 250 3.2 1.3 246 LILY LAKE 9156 .1 .6 17 1.3 1.5 87 MONTE CRISTO 8960 1.3 1.0 130 3.1 1.8 172 SALT RIVER SUMMIT 7760 .0 .1 0 2.2 1.2 183 TRIAL LAKE 9992 1.9 1.2 158 2.4 1.7 141 ----- ----- Basin wide percent of average 100 160 ----------------------------------------------------------------------------- -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.