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 SUNDAY: OCTOBER 28 , 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 .6 183* 5.0 1.8 278 COTTONWOOD CREEK 7600 1.8 .8 225* 5.0 2.7 185 GRANITE CREEK 6770 1.1 .5 220* 4.0 1.6 250 GRASSY LAKE 7265 1.1 1.2 92* 5.8 3.0 193 GROS VENTRE SUMMIT 8750 2.0 1.2 167* 3.9 1.7 229 LEWIS LAKE DIVIDE 7850 1.2 1.0 120* 5.5 2.9 190 PHILLIPS BENCH 8200 1.4 1.2 117* 4.9 2.2 223 SALT RIVER SUMMIT 7600 .1 .3 33* 2.5 1.7 147 SNAKE RIVER STATION 6920 .0 .5 0* 4.6 2.0 230 SPRING CREEK DIVIDE 9000 1.8 1.3 138* 3.3 2.4 138 THUMB DIVIDE 7980 .9 .7 129* 4.2 1.8 233 TOGWOTEE PASS 9580 4.5 2.3 196* 5.6 2.5 224 TWO OCEAN PLATEAU 9240 5.7 2.7 211* 6.1 2.8 218 WILLOW CREEK 8450 2.4 1.5 160* 6.3 3.3 191 ----- ----- Basin wide percent of average 159* 206 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.4 2.4 183* 4.3 1.9 226 BLACK BEAR 8170 3.5 2.4 146* 5.9 3.1 190 CANYON 8090 1.3 .6 217* 4.0 1.7 235 FISHER CREEK 9100 5.6 2.4 233* 6.6 3.0 220 MADISON PLATEAU 7750 1.6 1.4 114* 4.6 2.3 200 NORTHEAST ENTRANCE 7350 -M .3 * -M 1.4 * PARKER PEAK 9400 4.1 2.3 178* 5.2 2.1 248 SYLVAN LAKE 8420 1.9 1.7 112* 5.6 2.4 233 THUMB DIVIDE 7980 .9 .7 129* 4.2 1.8 233 TWO OCEAN PLATEAU 9240 5.7 2.7 211* 6.1 2.8 218 WHISKEY CREEK 6800 .8 .6 133* 4.3 2.0 215 WHITE MILL 8700 4.1 1.8 228* 5.0 2.4 208 WOLVERINE 7650 .0 .4 0* 3.2 1.7 188 ----- ----- Basin wide percent of average 175* 217 WIND RIVER BURROUGHS CREEK 8750 2.0 .8 250* 3.9 1.5 260 COLD SPRINGS 9630 .2 .9 22* 2.3 1.7 135 DEER PARK 9700 1.6 2.3 70 3.1 2.3 135 HOBBS PARK 10100 1.5 1.9 79 3.1 1.9 163 LITTLE WARM 9370 1.1 .9 122* 3.1 1.6 194 SOUTH PASS 9040 .3 1.3 23* 2.3 1.9 121 ST. LAWRENCE ALT 8620 .2 .7 29* 1.4 1.6 87 TOGWOTEE PASS 9580 4.5 2.3 196* 5.6 2.5 224 TOWNSEND CREEK 8700 .2 .9 22* 2.5 1.9 132 ----- ----- Basin wide percent of average 97* 162 BIGHORN BASIN BALD MTN. 9380 3.0 2.5 120 3.4 2.2 155 BEAR TRAP MEADOW 8200 .6 .5 120* 1.9 1.6 119 BLACKWATER 9780 4.9 2.8 175* 4.8 2.4 200 BONE SPRINGS DIV 9350 2.2 2.4 92 3.9 2.3 170 EVENING STAR 9200 4.0 2.4 167* 6.3 2.5 252 GRAVE SPRINGS 8550 1.1 1.0 110* 2.5 1.9 132 KIRWIN 9550 3.4 1.6 212 4.7 1.7 276 MARQUETTE 8760 .8 1.7 47 2.8 2.1 133 MIDDLE POWDER 7760 1.8 1.1 164* 2.4 2.4 100 OWL CREEK 8975 .6 .8 75 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 4.6 1.8 256 SYLVAN LAKE 8420 1.9 1.7 112* 5.6 2.4 233 SYLVAN ROAD 7120 .3 .4 75* 5.0 1.9 263 TIMBER CREEK 7950 .0 .9 0 3.1 1.5 207 YOUNTS PEAK 8350 2.0 1.2 167* 5.3 1.7 312 ----- ----- Basin wide percent of average 129* 199 SHOSHONE RIVER BLACKWATER 9780 4.9 2.8 175* 4.8 2.4 200 EVENING STAR 9200 4.0 2.4 167* 6.3 2.5 252 KIRWIN 9550 3.4 1.6 212 4.7 1.7 276 MARQUETTE 8760 .8 1.7 47 2.8 2.1 133 SYLVAN LAKE 8420 1.9 1.7 112* 5.6 2.4 233 SYLVAN ROAD 7120 .3 .4 75* 5.0 1.9 263 YOUNTS PEAK 8350 2.0 1.2 167* 5.3 1.7 312 ----- ----- Basin wide percent of average 147* 235 POWDER-TONGUE BEAR TRAP MEADOW 8200 .6 .5 120* 1.9 1.6 119 BIG GOOSE 7990 1.4 .8 175* 4.1 1.9 216 BONE SPRINGS DIV 9350 2.2 2.4 92 3.9 2.3 170 BURGESS JUNCTION 7880 1.3 1.4 93 3.3 2.0 165 CLOUD PEAK RESERVOIR 9860 2.7 1.3 208* 5.0 2.4 208 DOME LAKE 8880 1.9 1.6 119 4.4 2.3 191 GRAVE SPRINGS 8550 1.1 1.0 110* 2.5 1.9 132 HANSEN SAWMILL 8360 .9 .7 129 2.8 1.7 165 MIDDLE POWDER 7760 1.8 1.1 164* 2.4 2.4 100 POWDER RIVER PASS 9480 1.2 1.1 109* 3.1 1.7 182 SUCKER CREEK 8880 1.7 1.2 142* 3.6 2.2 164 TIE CREEK 6870 .0 .7 0 2.9 2.3 126 ----- ----- Basin wide percent of average 122* 162 BELLE FOURCHE BLIND PARK 6890 .0 .5 0* 1.4 2.4 58 COLE CANYON 5910 .0 .7 0 .8 -M * NORTH RAPID CREEK 6130 .0 .4 0* 1.0 2.3 43 ----- ----- Basin wide percent of average 0* 51 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .7 0* 3.5 2.2 159 DIVIDE PEAK 8860 1.2 1.5 80* 2.6 2.4 108 ELK RIVER 8700 -M .6 * 3.1 2.0 155 JOE WRIGHT 10120 2.2 2.3 96* 4.9 3.0 163 NORTH FRENCH CREEK 10130 2.3 2.9 79* 3.8 3.0 127 OLD BATTLE 9920 2.5 2.7 93* 4.2 3.2 131 SAGE CREEK BASIN 7850 .0 .8 0* 2.1 1.4 150 SOUTH BRUSH CREEK 8440 .9 .7 129* 3.1 2.4 129 TOWER 10500 2.7 3.1 87* 4.8 3.6 133 WEBBER SPRINGS 9250 1.3 1.6 81* 3.5 2.8 125 WILLOW CREEK PASS 9540 2.1 1.0 210* 3.0 1.8 167 ----- ----- Basin wide percent of average 88* 139 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.1 2.0 55* 2.6 2.3 113 CASPER MTN. 7850 1.3 1.5 87* 3.3 2.3 143 DEADMAN HILL 10220 2.4 2.0 120 3.3 2.3 143 DEER PARK 9700 1.6 2.3 70 3.1 2.3 135 LAPRELE CREEK 8375 .5 .9 56* 2.2 1.7 129 RENO HILL 8500 1.9 1.5 127* 3.6 2.3 157 ROACH 9700 1.8 1.1 164* 3.2 2.1 152 SAND LAKE 10050 3.6 2.9 124* 4.3 2.8 154 SOUTH PASS 9040 .3 1.3 23* 2.3 1.9 121 WINDY PEAK 7900 .6 .5 120* 1.7 1.6 106 ----- ----- Basin wide percent of average 94* 137 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .5 0* 2.0 1.7 118 DIVIDE PEAK 8860 1.2 1.5 80* 2.6 2.4 108 OLD BATTLE 9920 2.5 2.7 93* 4.2 3.2 131 SANDSTONE RS 8150 .0 .5 0* 2.2 2.1 105 WHISKEY PARK 8950 1.0 1.5 67* 3.7 2.6 142 ----- ----- Basin wide percent of average 70* 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.2 1.1 109* 1.9 1.7 112 BLIND BULL SUM 8900 1.7 1.5 113* 3.1 2.0 155 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 1.7 229 KENDALL R.S. 7740 .2 .5 40* 2.3 1.4 164 LOOMIS PARK 8240 .9 .8 112* 2.4 1.7 141 NEW FORK LAKE 8340 .5 .5 100* 2.1 1.4 150 SNIDER BASIN 8060 .1 .6 17* 1.7 1.5 113 SPRING CREEK DIVIDE 9000 1.8 1.3 138* 3.3 2.4 138 TRIPLE PEAK 8500 1.4 1.0 140* 4.4 2.0 220 ----- ----- Basin wide percent of average 111* 158 LOWER GREEN RIVER HAMS FORK 7840 .0 .4 0* 1.6 1.3 123 HEWINTA 9500 .0 .8 0* 4.3 2.2 195 HICKERSON PARK 9100 .2 .4 50* 2.8 1.6 175 HOLE-IN-ROCK 9150 .1 .4 25* 3.4 1.5 227 INDIAN CREEK 9425 1.6 1.3 123* 2.7 2.4 113 KELLEY R.S. 8180 .5 .8 62* 2.8 1.9 147 STEEL CREEK PARK 10100 -M 1.5 * -M 2.1 * ----- ----- Basin wide percent of average 59* 161 UPPER BEAR RIVER BUG LAKE 7950 .1 1.1 9* 1.3 2.1 62 HAYDEN FORK 9100 .1 .8 12* 3.4 2.2 155 KELLEY R.S. 8180 .5 .8 62* 2.8 1.9 147 LILY LAKE 9050 .1 .9 11* 3.4 2.2 155 MONTE CRISTO 8960 .1 1.5 7* 3.2 2.5 128 SALT RIVER SUMMIT 7600 .1 .3 33* 2.5 1.7 147 TRIAL LAKE 9960 1.2 1.7 71* 2.7 2.5 108 ----- ----- Basin wide percent of average 31* 128 ----------------------------------------------------------------------------- -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.