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 24 , 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 1.9 1.4 136 COTTONWOOD CREEK 7670 .0 .4 0 3.4 2.0 170 GRAND TARGHEE 9260 5.0 -M * 4.4 -M * GRANITE CREEK 6770 .2 .2 100 1.9 1.2 158 GRASSY LAKE 7265 .5 .7 71 2.9 2.3 126 GROS VENTRE SUMMIT 8750 1.7 .9 189 1.9 1.3 146 GUNSIGHT PASS 9820 1.7 -M * 2.8 -M * LEWIS LAKE DIVIDE 7850 .7 .5 140 2.9 2.1 138 PHILLIPS BENCH 8200 .2 .7 29 2.3 1.6 144 SALT RIVER SUMMIT 7760 .1 .1 100 2.3 1.3 177 SNAKE RIVER STATION 6920 .1 .2 50 2.3 1.6 144 SPRING CREEK DIVIDE 9000 2.9 .8 362 3.6 1.6 225 THUMB DIVIDE 7980 .1 .4 25 3.2 1.5 213 TOGWOTEE PASS 9580 3.3 1.7 194 3.3 1.9 174 TWO OCEAN PLATEAU 9240 3.3 2.0 165 2.6 2.1 124 WILLOW CREEK 8380 1.5 1.0 150 4.6 2.6 177 ----- ----- Basin wide percent of average 147 160 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.8 1.9 147 2.3 1.5 153 BLACK BEAR 8170 3.8 1.5 253 5.1 2.3 222 CANYON 7870 .8 .3 267 2.2 1.2 183 FISHER CREEK 9100 3.5 1.7 206 3.7 2.2 168 MADISON PLATEAU 7750 1.8 .8 225 4.5 1.8 250 NORTHEAST ENTRANCE 7350 .2 .1 200 2.1 1.1 191 PARKER PEAK 9400 3.4 2.0 170 2.7 1.7 159 SYLVAN LAKE 8420 .6 1.2 50 2.2 1.8 122 THUMB DIVIDE 7980 .1 .4 25 3.2 1.5 213 TWO OCEAN PLATEAU 9240 3.3 2.0 165 2.6 2.1 124 WHISKEY CREEK 6800 .4 .3 133 2.8 1.5 187 WHITE MILL 8700 2.8 1.2 233 2.8 1.9 147 WOLVERINE 7650 .3 .3 100 1.5 1.3 115 ----- ----- Basin wide percent of average 174 172 WIND RIVER BURROUGHS CREEK 8750 2.4 .5 480 2.3 1.1 209 COLD SPRINGS 9630 2.6 .7 371 2.7 1.3 208 DEER PARK 9700 2.8 1.1 255 3.8 1.8 211 HOBBS PARK 10100 3.3 1.7 194 -M 1.5 * LITTLE WARM 9370 1.5 .7 214 2.1 1.2 175 SOUTH PASS 9040 2.5 1.0 250 3.4 1.4 243 ST. LAWRENCE ALT 8620 1.3 .6 217 2.9 1.2 242 TOGWOTEE PASS 9580 3.3 1.7 194 3.3 1.9 174 TOWNSEND CREEK 8700 2.1 .7 300 3.2 1.6 200 ----- ----- Basin wide percent of average 251 206 BIGHORN BASIN BALD MTN. 9380 2.7 2.0 135 2.2 1.8 122 BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.3 131 BLACKWATER 9780 3.4 2.3 148 2.8 1.9 147 BONE SPRINGS DIV 9350 1.9 1.9 100 2.1 1.9 111 EVENING STAR 9200 3.7 1.8 206 4.3 1.9 226 GRAVE SPRINGS 8550 1.5 .8 188 2.5 1.6 156 KIRWIN 9550 2.5 1.3 192 2.1 1.3 162 MARQUETTE 8760 2.4 1.4 171 2.2 1.7 129 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.9 132 OWL CREEK 8975 2.2 .7 314 1.8 .9 200 POWDER RIVER PASS 9480 1.7 .9 189 2.0 1.4 143 SHELL CREEK 9580 2.7 2.1 129 2.1 1.5 140 SYLVAN LAKE 8420 .6 1.2 50 2.2 1.8 122 SYLVAN ROAD 7120 .1 .2 50 1.9 1.3 146 TIMBER CREEK 7950 1.1 .6 183 2.0 1.2 167 YOUNTS PEAK 8350 1.3 .9 144 1.7 1.3 131 ----- ----- Basin wide percent of average 155 146 SHOSHONE RIVER BLACKWATER 9780 3.4 2.3 148 2.8 1.9 147 EVENING STAR 9200 3.7 1.8 206 4.3 1.9 226 KIRWIN 9550 2.5 1.3 192 2.1 1.3 162 MARQUETTE 8760 2.4 1.4 171 2.2 1.7 129 SYLVAN LAKE 8420 .6 1.2 50 2.2 1.8 122 SYLVAN ROAD 7120 .1 .2 50 1.9 1.3 146 YOUNTS PEAK 8350 1.3 .9 144 1.7 1.3 131 ----- ----- Basin wide percent of average 154 154 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.3 131 BIG GOOSE 7990 .7 .6 117 2.0 1.6 125 BONE SPRINGS DIV 9350 1.9 1.9 100 2.1 1.9 111 BURGESS JUNCTION 7880 1.6 1.0 160 2.3 1.7 135 CLOUD PEAK RESERVOIR 9860 2.1 1.1 191 2.4 2.0 120 DOME LAKE 8880 1.4 1.3 108 2.2 1.9 116 GRAVE SPRINGS 8550 1.5 .8 188 2.5 1.6 156 HANSEN SAWMILL 8360 1.1 .5 220 2.0 1.4 143 MIDDLE POWDER 7760 1.8 1.0 180 2.5 1.9 132 POWDER RIVER PASS 9480 1.7 .9 189 2.0 1.4 143 SUCKER CREEK 8880 1.9 .9 211 2.4 1.8 133 TIE CREEK 6870 .2 .4 50 2.5 1.9 132 ----- ----- Basin wide percent of average 153 130 BELLE FOURCHE BLIND PARK 6890 .2 .2 100 2.5 1.9 132 COLE CANYON 5910 .0 .6 0 2.9 1.4 207 NORTH RAPID CREEK 6130 .2 .3 67 2.5 1.9 132 ----- ----- Basin wide percent of average 36 152 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .2 50 2.6 1.6 162 DIVIDE PEAK 8880 .3 1.2 25 3.2 2.0 160 ELK RIVER 8700 .1 .3 33 2.3 1.6 144 JOE WRIGHT 10120 2.6 1.6 162 2.5 2.4 104 NORTH FRENCH CREEK 10130 5.4 2.2 245 5.7 2.3 248 OLD BATTLE 10000 5.3 1.9 279 5.6 2.5 224 SAGE CREEK BASIN 7850 .1 .7 14 2.2 1.1 200 SOUTH BRUSH CREEK 8440 .2 .4 50 3.4 1.9 179 TOWER 10500 5.1 2.0 255 5.4 2.6 208 WEBBER SPRINGS 9250 1.6 1.1 145 4.2 2.1 200 WILLOW CREEK PASS 9540 .3 .7 43 1.7 1.4 121 ----- ----- Basin wide percent of average 172 180 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.6 1.4 257 4.2 1.7 247 CASPER MTN. 7900 .1 1.1 9 2.4 1.8 133 DEADMAN HILL 10220 .2 1.5 13 2.9 1.8 161 DEER PARK 9700 2.8 1.1 255 3.8 1.8 211 LAPRELE CREEK 8375 .2 .6 33 2.1 1.3 162 RENO HILL 8400 .6 1.2 50 2.2 1.8 122 ROACH 9700 1.4 .6 233 3.0 1.7 176 SAND LAKE 10050 5.1 2.2 232 5.3 2.1 252 SOUTH PASS 9040 2.5 1.0 250 3.4 1.4 243 WINDY PEAK 7900 .4 .3 133 2.2 1.2 183 ----- ----- Basin wide percent of average 154 190 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .2 50 1.4 1.3 108 DIVIDE PEAK 8880 .3 1.2 25 3.2 2.0 160 OLD BATTLE 10000 5.3 1.9 279 5.6 2.5 224 SANDSTONE RS 8150 -M .3 * 1.7 1.6 106 WHISKEY PARK 8950 1.0 1.0 100 4.2 2.1 200 ----- ----- Basin wide percent of average 156 169 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 .8 362 3.1 1.3 238 BLIND BULL SUM 8650 2.0 .9 222 1.9 1.5 127 EAST RIM DIVIDE 7930 .1 .3 33 1.8 .9 200 ELKHART PARK G.S. 9400 2.3 .5 460 2.7 1.4 193 GROS VENTRE SUMMIT 8750 1.7 .9 189 1.9 1.3 146 GUNSIGHT PASS 9820 1.7 -M * 2.8 -M * KENDALL R.S. 7740 .2 .3 67 2.0 1.1 182 LOOMIS PARK 8240 .3 .5 60 2.1 1.2 175 NEW FORK LAKE 8340 .0 .2 0 1.6 1.1 145 SNIDER BASIN 8060 .9 .4 225 2.5 1.0 250 SPRING CREEK DIVIDE 9000 2.9 .8 362 3.6 1.6 225 TRIPLE PEAK 8500 2.0 .6 333 3.6 1.5 240 ----- ----- Basin wide percent of average 247 193 LOWER GREEN RIVER HAMS FORK 7840 .3 .2 150 2.8 1.0 280 HEWINTA 9519 .1 .6 17 1.3 1.7 76 HICKERSON PARK 9145 .2 .2 100 1.2 1.2 100 HOLE-IN-ROCK 9150 .0 .2 0 1.5 1.2 125 INDIAN CREEK 9425 4.1 .8 512 4.5 1.7 265 KELLEY R.S. 8180 1.0 .5 200 3.4 1.4 243 STEEL CREEK PARK 10200 1.0 1.2 83 1.3 1.7 76 ----- ----- Basin wide percent of average 181 162 UPPER BEAR RIVER BUG LAKE 7950 .2 .8 25 2.7 1.7 159 HAYDEN FORK 9212 .2 .6 33 2.1 1.7 124 KELLEY R.S. 8180 1.0 .5 200 3.4 1.4 243 LILY LAKE 9156 .3 .7 43 1.3 1.7 76 MONTE CRISTO 8960 1.2 1.1 109 3.3 2.0 165 SALT RIVER SUMMIT 7760 .1 .1 100 2.3 1.3 177 TRIAL LAKE 9992 2.0 1.3 154 2.4 1.9 126 ----- ----- Basin wide percent of average 98 150 ----------------------------------------------------------------------------- -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 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.