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 25 , 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 .3 0 2.2 1.5 147 COTTONWOOD CREEK 7670 .0 .5 0 3.6 2.2 164 GRAND TARGHEE 9260 4.8 -M * 4.2 -M * GRANITE CREEK 6770 .2 .3 67 2.3 1.2 192 GRASSY LAKE 7265 .1 .8 12 3.0 2.4 125 GROS VENTRE SUMMIT 8750 1.7 1.0 170 2.0 1.4 143 GUNSIGHT PASS 9820 1.5 -M * 2.7 -M * LEWIS LAKE DIVIDE 7850 .6 .6 100 3.0 2.2 136 PHILLIPS BENCH 8200 .6 .8 75 2.8 1.7 165 SALT RIVER SUMMIT 7760 .0 .1 0 2.3 1.4 164 SNAKE RIVER STATION 6920 .0 .3 0 2.6 1.6 162 SPRING CREEK DIVIDE 9000 2.9 .9 322 3.6 1.7 212 THUMB DIVIDE 7980 .2 .4 50 3.4 1.5 227 TOGWOTEE PASS 9580 3.5 1.8 194 3.5 2.0 175 TWO OCEAN PLATEAU 9240 3.6 2.1 171 2.9 2.2 132 WILLOW CREEK 8380 1.6 1.1 145 4.9 2.7 181 ----- ----- Basin wide percent of average 136 164 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.8 2.1 133 2.2 1.5 147 BLACK BEAR 8170 3.7 1.6 231 5.1 2.4 212 CANYON 7870 .9 .4 225 2.2 1.3 169 FISHER CREEK 9100 3.4 1.8 189 3.6 2.3 157 MADISON PLATEAU 7750 1.7 .9 189 4.4 1.9 232 NORTHEAST ENTRANCE 7350 .0 .1 0 2.1 1.1 191 PARKER PEAK 9400 3.4 2.1 162 2.7 1.8 150 SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121 THUMB DIVIDE 7980 .2 .4 50 3.4 1.5 227 TWO OCEAN PLATEAU 9240 3.6 2.1 171 2.9 2.2 132 WHISKEY CREEK 6800 .1 .3 33 2.8 1.6 175 WHITE MILL 8700 2.9 1.3 223 2.7 2.0 135 WOLVERINE 7650 .2 .3 67 1.5 1.4 107 ----- ----- Basin wide percent of average 159 166 WIND RIVER BURROUGHS CREEK 8750 2.8 .6 467 2.5 1.2 208 COLD SPRINGS 9630 2.5 .8 312 2.7 1.4 193 DEER PARK 9700 2.7 1.2 225 3.7 1.9 195 HOBBS PARK 10100 3.3 1.7 194 -M 1.6 * LITTLE WARM 9370 1.5 .8 188 2.1 1.3 162 SOUTH PASS 9040 2.4 1.1 218 3.3 1.5 220 ST. LAWRENCE ALT 8620 1.0 .6 167 2.8 1.3 215 TOGWOTEE PASS 9580 3.5 1.8 194 3.5 2.0 175 TOWNSEND CREEK 8700 2.0 .7 286 3.1 1.6 194 ----- ----- Basin wide percent of average 233 194 BIGHORN BASIN BALD MTN. 9380 3.0 2.1 143 2.5 1.8 139 BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121 BLACKWATER 9780 3.6 2.4 150 3.0 2.0 150 BONE SPRINGS DIV 9350 2.0 2.0 100 2.2 1.9 116 EVENING STAR 9200 3.9 1.9 205 4.4 2.0 220 GRAVE SPRINGS 8550 1.7 .8 212 2.7 1.7 159 KIRWIN 9550 2.3 1.4 164 1.9 1.3 146 MARQUETTE 8760 2.2 1.4 157 2.2 1.8 122 MIDDLE POWDER 7760 1.8 1.0 180 2.3 2.0 115 OWL CREEK 8975 2.2 .7 314 1.7 .9 189 POWDER RIVER PASS 9480 1.8 .9 200 2.0 1.5 133 SHELL CREEK 9580 2.8 2.2 127 2.4 1.5 160 SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121 SYLVAN ROAD 7120 .0 .3 0 2.1 1.4 150 TIMBER CREEK 7950 .9 .8 112 2.0 1.2 167 YOUNTS PEAK 8350 1.3 1.0 130 1.9 1.4 136 ----- ----- Basin wide percent of average 149 145 SHOSHONE RIVER BLACKWATER 9780 3.6 2.4 150 3.0 2.0 150 EVENING STAR 9200 3.9 1.9 205 4.4 2.0 220 KIRWIN 9550 2.3 1.4 164 1.9 1.3 146 MARQUETTE 8760 2.2 1.4 157 2.2 1.8 122 SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121 SYLVAN ROAD 7120 .0 .3 0 2.1 1.4 150 YOUNTS PEAK 8350 1.3 1.0 130 1.9 1.4 136 ----- ----- Basin wide percent of average 142 151 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121 BIG GOOSE 7990 .7 .6 117 2.1 1.7 124 BONE SPRINGS DIV 9350 2.0 2.0 100 2.2 1.9 116 BURGESS JUNCTION 7880 1.9 1.1 173 2.3 1.7 135 CLOUD PEAK RESERVOIR 9860 2.2 1.1 200 2.1 2.1 100 DOME LAKE 8880 1.5 1.3 115 2.2 1.9 116 GRAVE SPRINGS 8550 1.7 .8 212 2.7 1.7 159 HANSEN SAWMILL 8360 1.2 .5 240 1.8 1.4 129 MIDDLE POWDER 7760 1.8 1.0 180 2.3 2.0 115 POWDER RIVER PASS 9480 1.8 .9 200 2.0 1.5 133 SUCKER CREEK 8880 2.2 .9 244 2.6 1.9 137 TIE CREEK 6870 .3 .5 60 2.7 2.0 135 ----- ----- Basin wide percent of average 162 126 BELLE FOURCHE BLIND PARK 6890 .3 .2 150 3.0 2.0 150 COLE CANYON 5910 .1 .6 17 3.1 1.4 221 NORTH RAPID CREEK 6130 .5 .3 167 2.9 2.0 145 ----- ----- Basin wide percent of average 82 167 UPPER N. PLATTE RIVER COLUMBINE 9160 .2 .3 67 3.0 1.7 176 DIVIDE PEAK 8880 .6 1.2 50 3.5 2.0 175 ELK RIVER 8700 .0 .3 0 2.6 1.6 162 JOE WRIGHT 10120 2.7 1.7 159 3.0 2.6 115 NORTH FRENCH CREEK 10130 6.1 2.3 265 6.3 2.4 262 OLD BATTLE 10000 5.7 2.0 285 6.1 2.6 235 SAGE CREEK BASIN 7850 .0 .7 0 2.3 1.2 192 SOUTH BRUSH CREEK 8440 .4 .4 100 3.6 2.0 180 TOWER 10500 6.2 2.1 295 6.2 2.8 221 WEBBER SPRINGS 9250 1.8 1.1 164 4.5 2.2 205 WILLOW CREEK PASS 9540 .3 .7 43 1.7 1.5 113 ----- ----- Basin wide percent of average 188 189 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.0 1.5 267 4.6 1.8 256 CASPER MTN. 7900 .0 1.2 0 2.4 1.9 126 DEADMAN HILL 10220 .1 1.6 6 2.9 1.9 153 DEER PARK 9700 2.7 1.2 225 3.7 1.9 195 LAPRELE CREEK 8375 .2 .6 33 2.2 1.4 157 RENO HILL 8400 .8 1.3 62 2.2 1.9 116 ROACH 9700 1.6 .7 229 3.1 1.7 182 SAND LAKE 10050 5.4 2.3 235 5.5 2.2 250 SOUTH PASS 9040 2.4 1.1 218 3.3 1.5 220 WINDY PEAK 7900 .5 .3 167 2.3 1.3 177 ----- ----- Basin wide percent of average 150 184 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .3 0 1.7 1.4 121 DIVIDE PEAK 8880 .6 1.2 50 3.5 2.0 175 OLD BATTLE 10000 5.7 2.0 285 6.1 2.6 235 SANDSTONE RS 8150 -M .3 * 2.0 1.7 118 WHISKEY PARK 8950 1.6 1.1 145 4.9 2.2 223 ----- ----- Basin wide percent of average 172 184 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 .8 350 3.1 1.3 238 BLIND BULL SUM 8650 2.3 1.0 230 2.2 1.6 138 EAST RIM DIVIDE 7930 .1 .3 33 1.8 1.0 180 ELKHART PARK G.S. 9400 2.2 .5 440 2.7 1.5 180 GROS VENTRE SUMMIT 8750 1.7 1.0 170 2.0 1.4 143 GUNSIGHT PASS 9820 1.5 -M * 2.7 -M * KENDALL R.S. 7740 .1 .3 33 2.0 1.1 182 LOOMIS PARK 8240 .3 .5 60 2.3 1.3 177 NEW FORK LAKE 8340 .0 .3 0 1.4 1.1 127 SNIDER BASIN 8060 .7 .4 175 2.4 1.1 218 SPRING CREEK DIVIDE 9000 2.9 .9 322 3.6 1.7 212 TRIPLE PEAK 8500 2.4 .7 343 3.9 1.6 244 ----- ----- Basin wide percent of average 231 186 LOWER GREEN RIVER HAMS FORK 7840 .2 .2 100 2.9 1.0 290 HEWINTA 9519 -M .6 * 1.3 1.8 72 HICKERSON PARK 9145 .0 .3 0 1.0 1.3 77 HOLE-IN-ROCK 9150 .0 .3 0 1.5 1.3 115 INDIAN CREEK 9425 4.1 .9 456 4.3 1.8 239 KELLEY R.S. 8180 1.0 .6 167 3.3 1.5 220 STEEL CREEK PARK 10200 1.4 1.2 117 1.5 1.7 88 ----- ----- Basin wide percent of average 191 152 UPPER BEAR RIVER BUG LAKE 7950 .1 .9 11 2.7 1.7 159 HAYDEN FORK 9212 .1 .6 17 2.1 1.8 117 KELLEY R.S. 8180 1.0 .6 167 3.3 1.5 220 LILY LAKE 9156 -M .7 * 1.4 1.8 78 MONTE CRISTO 8960 1.5 1.1 136 3.3 2.1 157 SALT RIVER SUMMIT 7760 .0 .1 0 2.3 1.4 164 TRIAL LAKE 9992 2.1 1.4 150 2.6 2.0 130 ----- ----- Basin wide percent of average 102 144 ----------------------------------------------------------------------------- -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.