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 20 , 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 .3 333* -M 1.3 * COTTONWOOD CREEK 7600 1.3 .4 325* 3.6 1.9 189 GRANITE CREEK 6770 1.6 .2 800* 3.3 1.1 300 GRASSY LAKE 7265 .9 .7 129* 4.9 2.1 233 GROS VENTRE SUMMIT 8750 1.7 .8 212* 3.0 1.2 250 LEWIS LAKE DIVIDE 7850 1.2 .5 240* -M 2.0 * PHILLIPS BENCH 8200 1.3 .6 217* 4.1 1.5 273 SALT RIVER SUMMIT 7600 .4 .1 400* 2.2 1.2 183 SNAKE RIVER STATION 6920 .3 .2 150* 4.0 1.4 286 SPRING CREEK DIVIDE 9000 1.6 .7 229* 2.6 1.7 153 THUMB DIVIDE 7980 .8 .3 267* 3.6 1.3 277 TOGWOTEE PASS 9580 3.9 1.5 260* 4.6 1.8 256 TWO OCEAN PLATEAU 9240 -M 1.8 * 4.9 2.0 245 WILLOW CREEK 8450 1.2 .8 150* 3.8 2.3 165 ----- ----- Basin wide percent of average 242* 229 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 1.7 * 3.9 1.3 300 BLACK BEAR 8170 3.4 1.4 243* 5.2 2.2 236 CANYON 8090 -M .3 * -M 1.2 * FISHER CREEK 9100 -M 1.5 * -M 2.1 * MADISON PLATEAU 7750 1.6 .8 200* 4.3 1.6 269 NORTHEAST ENTRANCE 7350 .3 .2 150* 3.0 1.0 300 PARKER PEAK 9400 -M 1.6 * 4.4 1.5 293 SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 * THUMB DIVIDE 7980 .8 .3 267* 3.6 1.3 277 TWO OCEAN PLATEAU 9240 -M 1.8 * 4.9 2.0 245 WHISKEY CREEK 6800 1.0 .3 333* 3.9 1.4 279 WHITE MILL 8700 -M 1.1 * 4.4 1.7 259 WOLVERINE 7650 .8 .2 400* -M 1.2 * ----- ----- Basin wide percent of average 218* 269 WIND RIVER BURROUGHS CREEK 8750 -M .5 * -M 1.0 * COLD SPRINGS 9630 .3 .5 60* 2.1 1.2 175 DEER PARK 9700 1.1 1.4 79* 2.8 1.6 175 HOBBS PARK 10100 1.2 1.2 100* 2.9 1.3 223 LITTLE WARM 9370 .8 .6 133* 2.4 1.1 218 SOUTH PASS 9040 .2 .8 25* 1.8 1.3 138 ST. LAWRENCE ALT 8620 .3 .3 100* 1.2 1.1 109 TOGWOTEE PASS 9580 3.9 1.5 260* 4.6 1.8 256 TOWNSEND CREEK 8700 .2 .5 40* 2.0 1.3 154 ----- ----- Basin wide percent of average 118* 185 BIGHORN BASIN BALD MTN. 9380 2.5 1.9 132* 3.2 1.5 213 BEAR TRAP MEADOW 8200 .2 .3 67* 1.2 1.1 109 BLACKWATER 9780 -M 2.0 * 3.8 1.7 224 BONE SPRINGS DIV 9350 .9 1.7 53* 2.9 1.6 181 EVENING STAR 9200 3.8 1.7 224* -M 1.8 * GRAVE SPRINGS 8550 .7 .5 140* 1.9 1.3 146 KIRWIN 9550 -M 1.1 * 3.9 1.2 325 MARQUETTE 8760 .2 1.2 17 1.9 1.5 127 MIDDLE POWDER 7760 1.5 .8 188* 1.6 1.7 94 OWL CREEK 8975 .3 .5 60* 1.9 .7 271 POWDER RIVER PASS 9480 .4 .7 57* 2.2 1.2 183 SHELL CREEK 9580 2.6 1.9 137 3.4 1.3 262 SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 * SYLVAN ROAD 7120 .3 .2 150* -M 1.3 * TIMBER CREEK 7950 .1 .4 25* 2.1 1.0 210 YOUNTS PEAK 8350 1.9 .8 237* -M 1.2 * ----- ----- Basin wide percent of average 124* 190 SHOSHONE RIVER BLACKWATER 9780 -M 2.0 * 3.8 1.7 224 EVENING STAR 9200 3.8 1.7 224* -M 1.8 * KIRWIN 9550 -M 1.1 * 3.9 1.2 325 MARQUETTE 8760 .2 1.2 17 1.9 1.5 127 SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 * SYLVAN ROAD 7120 .3 .2 150* -M 1.3 * YOUNTS PEAK 8350 1.9 .8 237* -M 1.2 * ----- ----- Basin wide percent of average 155* 218* POWDER-TONGUE BEAR TRAP MEADOW 8200 .2 .3 67* 1.2 1.1 109 BIG GOOSE 7990 .8 .5 160* 2.6 1.3 200 BONE SPRINGS DIV 9350 .9 1.7 53* 2.9 1.6 181 BURGESS JUNCTION 7880 .8 .9 89* 2.1 1.4 150 CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.4 1.7 200 DOME LAKE 8880 1.0 1.1 91* 2.9 1.6 181 GRAVE SPRINGS 8550 .7 .5 140* 1.9 1.3 146 HANSEN SAWMILL 8360 .4 .4 100* 2.0 1.2 167 MIDDLE POWDER 7760 1.5 .8 188* 1.6 1.7 94 POWDER RIVER PASS 9480 .4 .7 57* 2.2 1.2 183 SUCKER CREEK 8880 .8 .8 100* 2.4 1.5 160 TIE CREEK 6870 .0 .3 0* 2.0 1.6 125 ----- ----- Basin wide percent of average 102* 158 BELLE FOURCHE BLIND PARK 6890 .2 .2 100* 1.2 1.7 71 COLE CANYON 5910 .0 .3 0* 1.0 -M * NORTH RAPID CREEK 6130 .0 .2 0* .9 1.6 56 ----- ----- Basin wide percent of average 29* 64 UPPER N. PLATTE RIVER COLUMBINE 9160 .5 .3 167* 3.3 1.5 220 DIVIDE PEAK 8860 .2 1.0 20* -M 1.7 * ELK RIVER 8700 .0 .3 0* 2.4 1.4 171 JOE WRIGHT 10120 1.5 1.4 107* 3.8 2.1 181 NORTH FRENCH CREEK 10130 1.0 2.0 50* 2.4 2.1 114 OLD BATTLE 9920 1.3 1.7 76* 3.1 2.3 135 SAGE CREEK BASIN 7850 .1 .5 20* 1.5 1.0 150 SOUTH BRUSH CREEK 8440 .2 .4 50* 1.8 1.7 106 TOWER 10500 2.1 1.8 117* 4.0 2.5 160 WEBBER SPRINGS 9250 .5 .9 56* 2.4 2.0 120 WILLOW CREEK PASS 9540 1.1 .6 183* 1.9 1.3 146 ----- ----- Basin wide percent of average 78* 149 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 .4 1.3 31* 1.6 1.6 100 CASPER MTN. 7850 .3 1.0 30* 2.1 1.6 131 DEADMAN HILL 10220 1.5 1.3 115* 2.2 1.6 138 DEER PARK 9700 1.1 1.4 79* 2.8 1.6 175 LAPRELE CREEK 8375 .0 .5 0* 1.2 1.2 100 RENO HILL 8500 .5 1.0 50* 2.0 1.6 125 ROACH 9700 1.1 .6 183* 2.2 1.5 147 SAND LAKE 10050 2.2 1.9 116* 2.9 2.0 145 SOUTH PASS 9040 .2 .8 25* 1.8 1.3 138 WINDY PEAK 7900 .4 .2 200* 1.2 1.1 109 ----- ----- Basin wide percent of average 77* 132 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .2 50* 1.3 1.2 108 DIVIDE PEAK 8860 .2 1.0 20* -M 1.7 * OLD BATTLE 9920 1.3 1.7 76* 3.1 2.3 135 SANDSTONE RS 8150 .0 .2 0* 1.2 1.5 80 WHISKEY PARK 8950 .5 .9 56* 2.6 1.8 144 ----- ----- Basin wide percent of average 52* 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 .7 .7 100* 1.9 1.2 158 BLIND BULL SUM 8900 1.5 .8 188* 2.5 1.4 179 EAST RIM DIVIDE 7930 .5 .2 250* 1.8 .9 200 ELKHART PARK G.S. 9400 .9 .4 225* 2.0 1.2 167 GROS VENTRE SUMMIT 8750 1.7 .8 212* 3.0 1.2 250 KENDALL R.S. 7740 1.0 .2 500* 2.2 1.0 220 LOOMIS PARK 8240 1.0 .4 250* 2.2 1.2 183 NEW FORK LAKE 8340 .7 .2 350* 1.9 1.0 190 SNIDER BASIN 8060 .5 .3 167* 1.4 1.0 140 SPRING CREEK DIVIDE 9000 1.6 .7 229* 2.6 1.7 153 TRIPLE PEAK 8500 1.2 .5 240* 3.3 1.4 236 ----- ----- Basin wide percent of average 217* 188 LOWER GREEN RIVER HAMS FORK 7840 .0 .1 0* 1.4 .9 156 HEWINTA 9500 .0 .5 0* 3.7 1.5 247 HICKERSON PARK 9100 .3 .1 300* 2.6 1.1 236 HOLE-IN-ROCK 9150 .0 .1 0* 3.0 1.0 300 INDIAN CREEK 9425 1.3 .8 162* 2.2 1.7 129 KELLEY R.S. 8180 .8 .4 200* 2.5 1.3 192 STEEL CREEK PARK 10100 3.2 1.1 291* 3.8 1.5 253 ----- ----- Basin wide percent of average 181* 213 UPPER BEAR RIVER BUG LAKE 7950 .1 .7 14* 1.7 1.5 113 HAYDEN FORK 9100 .1 .5 20* 2.6 1.5 173 KELLEY R.S. 8180 .8 .4 200* 2.5 1.3 192 LILY LAKE 9050 .1 .6 17* 2.5 1.5 167 MONTE CRISTO 8960 .4 1.0 40* 2.8 1.8 156 SALT RIVER SUMMIT 7600 .4 .1 400* 2.2 1.2 183 TRIAL LAKE 9960 .8 1.2 67* 1.9 1.8 106 ----- ----- Basin wide percent of average 60* 153 ----------------------------------------------------------------------------- -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.