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 24 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.1 .4 275* 5.0 1.6 312 COTTONWOOD CREEK 7600 2.0 .6 333* 5.0 2.3 217 GRANITE CREEK 6770 1.3 .4 325* 4.0 1.3 308 GRASSY LAKE 7265 1.4 .9 156* 5.8 2.6 223 GROS VENTRE SUMMIT 8750 2.0 1.0 200* 3.9 1.4 279 LEWIS LAKE DIVIDE 7850 1.3 .7 186* 5.5 2.4 229 PHILLIPS BENCH 8200 1.6 .9 178* 4.9 1.9 258 SALT RIVER SUMMIT 7600 .4 .2 200* 2.5 1.5 167 SNAKE RIVER STATION 6920 .4 .3 133* 4.6 1.7 271 SPRING CREEK DIVIDE 9000 2.0 1.0 200* 3.3 2.0 165 THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.6 262 TOGWOTEE PASS 9580 4.7 1.9 247* 5.6 2.2 255 TWO OCEAN PLATEAU 9240 5.8 2.3 252* 6.1 2.4 254 WILLOW CREEK 8450 2.9 1.2 242* 6.4 2.8 229 ----- ----- Basin wide percent of average 228* 241 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.5 2.0 225* 4.4 1.6 275 BLACK BEAR 8170 3.7 1.9 195* 5.9 2.7 219 CANYON 8090 1.2 .5 240* 3.9 1.4 279 FISHER CREEK 9100 5.9 2.0 295* 6.8 2.5 272 MADISON PLATEAU 7750 1.6 1.1 145* 4.7 1.9 247 NORTHEAST ENTRANCE 7350 .0 .2 0* 3.2 1.2 267 PARKER PEAK 9400 4.3 1.9 226* 5.3 1.8 294 SYLVAN LAKE 8420 2.1 1.5 140* 5.6 2.0 280 THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.6 262 TWO OCEAN PLATEAU 9240 5.8 2.3 252* 6.1 2.4 254 WHISKEY CREEK 6800 .9 .5 180* 4.4 1.7 259 WHITE MILL 8700 4.2 1.4 300* 5.0 2.1 238 WOLVERINE 7650 .0 .3 0* 3.3 1.4 236 ----- ----- Basin wide percent of average 219* 258 WIND RIVER BURROUGHS CREEK 8750 2.0 .7 286* 3.8 1.3 292 COLD SPRINGS 9630 .0 .7 0* 2.4 1.5 160 DEER PARK 9700 1.7 1.8 94* 3.1 1.9 163 HOBBS PARK 10100 1.5 1.5 100* 3.1 1.6 194 LITTLE WARM 9370 1.2 .8 150* 3.1 1.3 238 SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150 ST. LAWRENCE ALT 8620 .0 .5 0* 1.4 1.3 108 TOGWOTEE PASS 9580 4.7 1.9 247* 5.6 2.2 255 TOWNSEND CREEK 8700 .4 .7 57* 2.6 1.6 162 ----- ----- Basin wide percent of average 125* 192 BIGHORN BASIN BALD MTN. 9380 3.0 2.2 136* 3.7 1.9 195 BEAR TRAP MEADOW 8200 .9 .4 225* 1.9 1.3 146 BLACKWATER 9780 5.2 2.4 217* 4.9 2.1 233 BONE SPRINGS DIV 9350 2.2 2.0 110 3.9 1.9 205 EVENING STAR 9200 4.3 2.0 215* 6.4 2.2 291 GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156 KIRWIN 9550 3.5 1.4 250 4.7 1.4 336 MARQUETTE 8760 1.1 1.5 73 3.0 1.8 167 MIDDLE POWDER 7760 2.3 1.0 230* 2.4 2.0 120 OWL CREEK 8975 .8 .6 133 2.4 .9 267 POWDER RIVER PASS 9480 1.2 .9 133* 3.1 1.5 207 SHELL CREEK 9580 3.9 2.2 177 4.6 1.6 287 SYLVAN LAKE 8420 2.1 1.5 140* 5.6 2.0 280 SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312 TIMBER CREEK 7950 .3 .6 50 3.1 1.3 238 YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.4 379 ----- ----- Basin wide percent of average 167* 236 SHOSHONE RIVER BLACKWATER 9780 5.2 2.4 217* 4.9 2.1 233 EVENING STAR 9200 4.3 2.0 215* 6.4 2.2 291 KIRWIN 9550 3.5 1.4 250 4.7 1.4 336 MARQUETTE 8760 1.1 1.5 73 3.0 1.8 167 SYLVAN LAKE 8420 2.1 1.5 140* 5.6 2.0 280 SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312 YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.4 379 ----- ----- Basin wide percent of average 185* 279 POWDER-TONGUE BEAR TRAP MEADOW 8200 .9 .4 225* 1.9 1.3 146 BIG GOOSE 7990 1.9 .6 317* 4.1 1.6 256 BONE SPRINGS DIV 9350 2.2 2.0 110 3.9 1.9 205 BURGESS JUNCTION 7880 1.6 1.1 145* 3.3 1.7 194 CLOUD PEAK RESERVOIR 9860 3.1 1.0 310* 5.2 2.0 260 DOME LAKE 8880 2.1 1.3 162* 4.5 1.9 237 GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156 HANSEN SAWMILL 8360 1.2 .6 200* 2.9 1.4 207 MIDDLE POWDER 7760 2.3 1.0 230* 2.4 2.0 120 POWDER RIVER PASS 9480 1.2 .9 133* 3.1 1.5 207 SUCKER CREEK 8880 2.0 1.0 200* 3.9 1.9 205 TIE CREEK 6870 .0 .5 0* 2.9 1.9 153 ----- ----- Basin wide percent of average 178* 196 BELLE FOURCHE BLIND PARK 6890 .0 .3 0* 1.5 2.0 75 COLE CANYON 5910 .0 .5 0* 1.1 -M * NORTH RAPID CREEK 6130 .0 .3 0* 1.2 1.9 63 ----- ----- Basin wide percent of average 0* 69 UPPER N. PLATTE RIVER COLUMBINE 9160 .4 .5 80* 3.5 1.9 184 DIVIDE PEAK 8860 1.4 1.3 108* 2.6 2.1 124 ELK RIVER 8700 -M .4 * 3.2 1.7 188 JOE WRIGHT 10120 2.2 1.8 122* 4.8 2.6 185 NORTH FRENCH CREEK 10130 2.4 2.4 100* 3.8 2.6 146 OLD BATTLE 9920 2.6 2.2 118* 4.2 2.7 156 SAGE CREEK BASIN 7850 .5 .7 71* 2.1 1.2 175 SOUTH BRUSH CREEK 8440 1.1 .5 220* 3.1 2.0 155 TOWER 10500 2.8 2.4 117* 4.8 3.0 160 WEBBER SPRINGS 9250 1.4 1.3 108* 3.5 2.4 146 WILLOW CREEK PASS 9540 2.1 .8 262* 3.0 1.6 188 ----- ----- Basin wide percent of average 122* 162 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.2 1.6 75* 2.6 1.9 137 CASPER MTN. 7850 1.6 1.2 133* 3.3 1.9 174 DEADMAN HILL 10220 2.3 1.6 144* 3.3 1.9 174 DEER PARK 9700 1.7 1.8 94* 3.1 1.9 163 LAPRELE CREEK 8375 .7 .7 100* 2.2 1.5 147 RENO HILL 8500 2.1 1.3 162* 3.6 1.9 189 ROACH 9700 1.9 .8 237* 3.2 1.8 178 SAND LAKE 10050 3.6 2.4 150* 4.2 2.4 175 SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150 WINDY PEAK 7900 .9 .4 225* 1.7 1.3 131 ----- ----- Basin wide percent of average 129* 164 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .3 100* 2.0 1.5 133 DIVIDE PEAK 8860 1.4 1.3 108* 2.6 2.1 124 OLD BATTLE 9920 2.6 2.2 118* 4.2 2.7 156 SANDSTONE RS 8150 .1 .4 25* 2.2 1.8 122 WHISKEY PARK 8950 1.1 1.2 92* 3.7 2.2 168 ----- ----- Basin wide percent of average 102* 143 UPPER GREEN RIVER BIG SANDY OPENING 9080 .9 .9 100* 2.0 1.4 143 BLIND BULL SUM 8900 1.8 1.1 164* 3.1 1.7 182 EAST RIM DIVIDE 7930 .3 .4 75* 2.1 1.0 210 ELKHART PARK G.S. 9400 1.1 .6 183* 2.6 1.5 173 GROS VENTRE SUMMIT 8750 2.0 1.0 200* 3.9 1.4 279 KENDALL R.S. 7740 .6 .4 150* 2.3 1.2 192 LOOMIS PARK 8240 1.0 .6 167* 2.4 1.4 171 NEW FORK LAKE 8340 .7 .3 233* 2.2 1.2 183 SNIDER BASIN 8060 .3 .5 60* 1.7 1.3 131 SPRING CREEK DIVIDE 9000 2.0 1.0 200* 3.3 2.0 165 TRIPLE PEAK 8500 1.4 .8 175* 4.4 1.7 259 ----- ----- Basin wide percent of average 159* 190 LOWER GREEN RIVER HAMS FORK 7840 .0 .3 0* 1.5 1.1 136 HEWINTA 9500 -M .7 * 4.3 1.9 226 HICKERSON PARK 9100 .1 .3 33* 2.8 1.3 215 HOLE-IN-ROCK 9150 .0 .3 0* 3.3 1.3 254 INDIAN CREEK 9425 1.9 1.0 190* 2.8 2.0 140 KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175 STEEL CREEK PARK 10100 3.7 1.3 285* 4.6 1.8 256 ----- ----- Basin wide percent of average 168* 201 UPPER BEAR RIVER BUG LAKE 7950 .3 .9 33* 1.3 1.8 72 HAYDEN FORK 9100 .2 .7 29* 3.4 1.9 179 KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175 LILY LAKE 9050 .0 .7 0* 3.4 1.9 179 MONTE CRISTO 8960 .9 1.2 75* 3.5 2.2 159 SALT RIVER SUMMIT 7600 .4 .2 200* 2.5 1.5 167 TRIAL LAKE 9960 1.4 1.4 100* 2.8 2.2 127 ----- ----- Basin wide percent of average 68* 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 1971-2000. 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.