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 27 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.0 .5 200* 5.0 1.8 278 COTTONWOOD CREEK 7600 1.8 .7 257* 5.0 2.6 192 GRANITE CREEK 6770 1.2 .5 240* 4.1 1.5 273 GRASSY LAKE 7265 1.2 1.1 109* 5.9 2.9 203 GROS VENTRE SUMMIT 8750 2.0 1.2 167* 3.9 1.6 244 LEWIS LAKE DIVIDE 7850 1.3 .9 144* 5.6 2.8 200 PHILLIPS BENCH 8200 1.5 1.1 136* 5.0 2.1 238 SALT RIVER SUMMIT 7600 .0 .3 0* 2.5 1.7 147 SNAKE RIVER STATION 6920 .1 .4 25* 4.6 1.9 242 SPRING CREEK DIVIDE 9000 1.8 1.2 150* 3.3 2.3 143 THUMB DIVIDE 7980 1.0 .7 143* 4.3 1.8 239 TOGWOTEE PASS 9580 4.6 2.2 209* 5.6 2.4 233 TWO OCEAN PLATEAU 9240 5.8 2.6 223* 6.1 2.7 226 WILLOW CREEK 8450 2.5 1.5 167* 6.3 3.2 197 ----- ----- Basin wide percent of average 173* 215 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.3 2.3 187* 4.2 1.8 233 BLACK BEAR 8170 3.6 2.3 157* 5.9 3.0 197 CANYON 8090 1.2 .6 200* 3.9 1.6 244 FISHER CREEK 9100 5.6 2.3 243* 6.6 2.9 228 MADISON PLATEAU 7750 1.5 1.3 115* 4.6 2.2 209 NORTHEAST ENTRANCE 7350 -M .2 * -M 1.3 * PARKER PEAK 9400 4.1 2.2 186* 5.1 2.0 255 SYLVAN LAKE 8420 2.0 1.7 118* 5.6 2.3 243 THUMB DIVIDE 7980 1.0 .7 143* 4.3 1.8 239 TWO OCEAN PLATEAU 9240 5.8 2.6 223* 6.1 2.7 226 WHISKEY CREEK 6800 .8 .6 133* 4.3 1.9 226 WHITE MILL 8700 4.1 1.7 241* 5.0 2.3 217 WOLVERINE 7650 .0 .4 0* 3.2 1.6 200 ----- ----- Basin wide percent of average 182* 225 WIND RIVER BURROUGHS CREEK 8750 2.0 .8 250* 3.9 1.4 279 COLD SPRINGS 9630 .1 .8 12* 2.3 1.7 135 DEER PARK 9700 1.7 2.1 81 3.1 2.2 141 HOBBS PARK 10100 1.5 1.8 83 3.1 1.8 172 LITTLE WARM 9370 1.1 .9 122* 3.1 1.5 207 SOUTH PASS 9040 .2 1.2 17* 2.3 1.8 128 ST. LAWRENCE ALT 8620 .2 .7 29* 1.4 1.5 93 TOGWOTEE PASS 9580 4.6 2.2 209* 5.6 2.4 233 TOWNSEND CREEK 8700 .2 .9 22* 2.5 1.8 139 ----- ----- Basin wide percent of average 102* 170 BIGHORN BASIN BALD MTN. 9380 2.9 2.4 121 3.1 2.1 148 BEAR TRAP MEADOW 8200 .5 .5 100* 1.9 1.5 127 BLACKWATER 9780 5.0 2.7 185* 4.8 2.3 209 BONE SPRINGS DIV 9350 2.1 2.3 91 3.8 2.2 173 EVENING STAR 9200 4.1 2.3 178* 6.2 2.4 258 GRAVE SPRINGS 8550 1.0 .9 111* 2.5 1.8 139 KIRWIN 9550 3.4 1.6 212 4.7 1.6 294 MARQUETTE 8760 .7 1.7 41 2.8 2.0 140 MIDDLE POWDER 7760 1.8 1.1 164* 2.4 2.3 104 OWL CREEK 8975 .7 .7 100 2.4 1.0 240 POWDER RIVER PASS 9480 1.2 1.1 109* 3.1 1.7 182 SHELL CREEK 9580 3.9 2.4 162 4.5 1.8 250 SYLVAN LAKE 8420 2.0 1.7 118* 5.6 2.3 243 SYLVAN ROAD 7120 .4 .4 100* 4.9 1.8 272 TIMBER CREEK 7950 .0 .8 0 3.1 1.4 221 YOUNTS PEAK 8350 2.1 1.2 175* 5.3 1.6 331 ----- ----- Basin wide percent of average 134* 205 SHOSHONE RIVER BLACKWATER 9780 5.0 2.7 185* 4.8 2.3 209 EVENING STAR 9200 4.1 2.3 178* 6.2 2.4 258 KIRWIN 9550 3.4 1.6 212 4.7 1.6 294 MARQUETTE 8760 .7 1.7 41 2.8 2.0 140 SYLVAN LAKE 8420 2.0 1.7 118* 5.6 2.3 243 SYLVAN ROAD 7120 .4 .4 100* 4.9 1.8 272 YOUNTS PEAK 8350 2.1 1.2 175* 5.3 1.6 331 ----- ----- Basin wide percent of average 153* 245 POWDER-TONGUE BEAR TRAP MEADOW 8200 .5 .5 100* 1.9 1.5 127 BIG GOOSE 7990 1.4 .7 200* 3.9 1.8 217 BONE SPRINGS DIV 9350 2.1 2.3 91 3.8 2.2 173 BURGESS JUNCTION 7880 1.3 1.3 100* 3.3 1.9 174 CLOUD PEAK RESERVOIR 9860 2.7 1.2 225* 4.8 2.3 209 DOME LAKE 8880 1.7 1.5 113 4.3 2.2 195 GRAVE SPRINGS 8550 1.0 .9 111* 2.5 1.8 139 HANSEN SAWMILL 8360 .8 .7 114 2.7 1.6 169 MIDDLE POWDER 7760 1.8 1.1 164* 2.4 2.3 104 POWDER RIVER PASS 9480 1.2 1.1 109* 3.1 1.7 182 SUCKER CREEK 8880 1.6 1.1 145* 3.2 2.1 152 TIE CREEK 6870 .0 .6 0 2.9 2.2 132 ----- ----- Basin wide percent of average 124* 164 BELLE FOURCHE BLIND PARK 6890 .0 .4 0* 1.4 2.3 61 COLE CANYON 5910 -M .6 * .9 -M * NORTH RAPID CREEK 6130 -M .4 * .9 2.2 41 ----- ----- Basin wide percent of average 0* 51 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .6 0* 3.5 2.1 167 DIVIDE PEAK 8860 1.1 1.5 73* 2.6 2.3 113 ELK RIVER 8700 -M .5 * 3.1 1.9 163 JOE WRIGHT 10120 2.1 2.1 100* 4.8 2.9 166 NORTH FRENCH CREEK 10130 2.3 2.7 85* 3.8 2.9 131 OLD BATTLE 9920 2.5 2.6 96* 4.2 3.1 135 SAGE CREEK BASIN 7850 .0 .8 0* 2.1 1.3 162 SOUTH BRUSH CREEK 8440 1.0 .6 167* 3.1 2.3 135 TOWER 10500 2.7 2.9 93* 4.8 3.4 141 WEBBER SPRINGS 9250 1.3 1.6 81* 3.5 2.7 130 WILLOW CREEK PASS 9540 2.1 .9 233* 3.0 1.8 167 ----- ----- Basin wide percent of average 93* 144 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.0 1.9 53* 2.5 2.2 114 CASPER MTN. 7850 1.3 1.4 93* 3.3 2.2 150 DEADMAN HILL 10220 2.3 1.9 121* 3.3 2.2 150 DEER PARK 9700 1.7 2.1 81 3.1 2.2 141 LAPRELE CREEK 8375 .5 .9 56* 2.2 1.7 129 RENO HILL 8500 1.9 1.5 127* 3.5 2.2 159 ROACH 9700 1.8 1.0 180* 3.2 2.0 160 SAND LAKE 10050 3.6 2.8 129* 4.2 2.7 156 SOUTH PASS 9040 .2 1.2 17* 2.3 1.8 128 WINDY PEAK 7900 .6 .5 120* 1.7 1.5 113 ----- ----- Basin wide percent of average 98* 142 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .4 0* 2.0 1.7 118 DIVIDE PEAK 8860 1.1 1.5 73* 2.6 2.3 113 OLD BATTLE 9920 2.5 2.6 96* 4.2 3.1 135 SANDSTONE RS 8150 .0 .5 0* 2.2 2.0 110 WHISKEY PARK 8950 1.0 1.4 71* 3.7 2.5 148 ----- ----- Basin wide percent of average 72* 127 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.1 1.0 110* 2.0 1.6 125 BLIND BULL SUM 8900 1.8 1.4 129* 3.1 1.9 163 EAST RIM DIVIDE 7930 .0 .5 0* 2.0 1.2 167 ELKHART PARK G.S. 9400 1.0 .7 143* 2.4 1.7 141 GROS VENTRE SUMMIT 8750 2.0 1.2 167* 3.9 1.6 244 KENDALL R.S. 7740 .2 .5 40* 2.3 1.3 177 LOOMIS PARK 8240 .9 .8 112* 2.5 1.6 156 NEW FORK LAKE 8340 .5 .4 125* 2.3 1.3 177 SNIDER BASIN 8060 .1 .6 17* 1.8 1.4 129 SPRING CREEK DIVIDE 9000 1.8 1.2 150* 3.3 2.3 143 TRIPLE PEAK 8500 1.4 1.0 140* 4.4 1.9 232 ----- ----- Basin wide percent of average 116* 169 LOWER GREEN RIVER HAMS FORK 7840 .0 .4 0* 1.6 1.3 123 HEWINTA 9500 .0 .8 0* 4.3 2.1 205 HICKERSON PARK 9100 .2 .4 50* 2.8 1.5 187 HOLE-IN-ROCK 9150 .1 .4 25* 3.4 1.4 243 INDIAN CREEK 9425 1.6 1.2 133* 2.7 2.3 117 KELLEY R.S. 8180 .5 .8 62* 2.8 1.8 156 STEEL CREEK PARK 10100 4.0 1.4 286* 4.6 2.0 230 ----- ----- Basin wide percent of average 119* 179 UPPER BEAR RIVER BUG LAKE 7950 .1 1.1 9* 1.4 2.0 70 HAYDEN FORK 9100 .1 .8 12* 3.4 2.1 162 KELLEY R.S. 8180 .5 .8 62* 2.8 1.8 156 LILY LAKE 9050 .2 .8 25* 3.4 2.1 162 MONTE CRISTO 8960 .0 1.4 0* 3.1 2.4 129 SALT RIVER SUMMIT 7600 .0 .3 0* 2.5 1.7 147 TRIAL LAKE 9960 1.1 1.6 69* 2.7 2.4 113 ----- ----- Basin wide percent of average 29* 133 ----------------------------------------------------------------------------- -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.