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 FRIDAY: OCTOBER 30 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .3 .5 60 2.5 1.9 132 COTTONWOOD CREEK 7670 .4 .8 50 4.3 2.8 154 GRAND TARGHEE 9260 5.9 -M * 5.2 -M * GRANITE CREEK 6770 .2 .4 50 2.5 1.6 156 GRASSY LAKE 7265 .9 1.2 75 3.5 3.0 117 GROS VENTRE SUMMIT 8750 2.0 1.3 154 2.3 1.7 135 GUNSIGHT PASS 9820 1.5 -M * 2.9 -M * LEWIS LAKE DIVIDE 7850 -M 1.0 * -M 2.8 * PHILLIPS BENCH 8200 1.1 1.2 92 3.2 2.1 152 SALT RIVER SUMMIT 7760 .2 .3 67 2.4 1.8 133 SNAKE RIVER STATION 6920 .4 .5 80 3.0 2.1 143 SPRING CREEK DIVIDE 9000 3.1 1.3 238 3.9 2.3 170 THUMB DIVIDE 7980 .7 .7 100 3.9 1.9 205 TOGWOTEE PASS 9580 4.0 2.3 174 4.1 2.6 158 TWO OCEAN PLATEAU 9240 4.5 2.8 161 3.4 2.8 121 WILLOW CREEK 8380 2.0 1.6 125 5.4 3.4 159 ----- ----- Basin wide percent of average 133 148 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 3.4 2.5 136 2.6 1.9 137 BLACK BEAR 8170 4.3 2.5 172 5.7 3.1 184 CANYON 7870 1.3 .6 217 2.8 1.7 165 FISHER CREEK 9100 4.4 2.4 183 4.8 3.0 160 MADISON PLATEAU 7750 2.1 1.5 140 4.8 2.3 209 NORTHEAST ENTRANCE 7350 .2 .2 100 2.4 1.4 171 PARKER PEAK 9400 4.1 2.4 171 3.3 2.2 150 SYLVAN LAKE 8420 1.2 1.7 71 2.9 2.4 121 THUMB DIVIDE 7980 .7 .7 100 3.9 1.9 205 TWO OCEAN PLATEAU 9240 4.5 2.8 161 3.4 2.8 121 WHISKEY CREEK 6800 .0 .7 0 3.2 2.0 160 WHITE MILL 8700 3.6 1.7 212 3.3 2.5 132 WOLVERINE 7650 .8 .4 200 2.2 1.7 129 ----- ----- Basin wide percent of average 152 157 WIND RIVER BURROUGHS CREEK 8750 2.9 .8 362 2.7 1.5 180 COLD SPRINGS 9630 2.6 1.0 260 2.9 1.8 161 DEER PARK 9700 4.6 1.9 242 5.6 2.3 243 HOBBS PARK 10100 5.0 2.1 238 4.7 2.0 235 LITTLE WARM 9370 1.7 .9 189 2.3 1.6 144 SOUTH PASS 9040 3.9 1.4 279 4.7 1.9 247 ST. LAWRENCE ALT 8620 1.9 .9 211 3.7 1.6 231 TOGWOTEE PASS 9580 4.0 2.3 174 4.1 2.6 158 TOWNSEND CREEK 8700 3.2 1.1 291 4.8 2.0 240 ----- ----- Basin wide percent of average 240 205 BIGHORN BASIN BALD MTN. 9380 3.7 2.6 142 3.1 2.2 141 BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125 BLACKWATER 9780 4.3 2.9 148 3.6 2.5 144 BONE SPRINGS DIV 9350 3.1 2.4 129 2.9 2.3 126 EVENING STAR 9200 4.4 2.4 183 5.2 2.5 208 GRAVE SPRINGS 8550 2.4 1.1 218 3.5 2.0 175 KIRWIN 9550 2.9 1.8 161 2.4 1.7 141 MARQUETTE 8760 2.8 1.9 147 2.7 2.2 123 MIDDLE POWDER 7760 2.5 1.3 192 2.7 2.4 113 OWL CREEK 8975 2.2 .8 275 1.9 1.1 173 POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122 SHELL CREEK 9580 3.1 2.6 119 2.8 1.9 147 SYLVAN LAKE 8420 1.2 1.7 71 2.9 2.4 121 SYLVAN ROAD 7120 .5 .4 125 2.5 1.9 132 TIMBER CREEK 7950 1.1 1.1 100 2.4 1.5 160 YOUNTS PEAK 8350 1.9 1.3 146 2.1 1.7 124 ----- ----- Basin wide percent of average 151 142 SHOSHONE RIVER BLACKWATER 9780 4.3 2.9 148 3.6 2.5 144 EVENING STAR 9200 4.4 2.4 183 5.2 2.5 208 KIRWIN 9550 2.9 1.8 161 2.4 1.7 141 MARQUETTE 8760 2.8 1.9 147 2.7 2.2 123 SYLVAN LAKE 8420 1.2 1.7 71 2.9 2.4 121 SYLVAN ROAD 7120 .5 .4 125 2.5 1.9 132 YOUNTS PEAK 8350 1.9 1.3 146 2.1 1.7 124 ----- ----- Basin wide percent of average 145 144 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125 BIG GOOSE 7990 1.5 .8 188 2.9 2.0 145 BONE SPRINGS DIV 9350 3.1 2.4 129 2.9 2.3 126 BURGESS JUNCTION 7880 2.9 1.5 193 3.4 2.1 162 CLOUD PEAK RESERVOIR 9860 2.9 1.5 193 2.8 2.5 112 DOME LAKE 8880 2.0 1.8 111 3.0 2.3 130 GRAVE SPRINGS 8550 2.4 1.1 218 3.5 2.0 175 HANSEN SAWMILL 8360 1.1 .8 138 1.9 1.7 112 MIDDLE POWDER 7760 2.5 1.3 192 2.7 2.4 113 POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122 SUCKER CREEK 8880 3.3 1.4 236 3.7 2.3 161 TIE CREEK 6870 1.2 .8 150 3.8 2.4 158 ----- ----- Basin wide percent of average 173 137 BELLE FOURCHE BLIND PARK 6890 .8 .4 200 3.6 2.4 150 COLE CANYON 5910 .6 .8 75 3.9 1.7 229 NORTH RAPID CREEK 6130 1.1 .4 275 3.5 2.3 152 ----- ----- Basin wide percent of average 156 172 UPPER N. PLATTE RIVER COLUMBINE 9160 .9 .6 150 3.6 2.2 164 DIVIDE PEAK 8880 2.3 1.6 144 5.0 2.5 200 ELK RIVER 8700 .1 .5 20 3.0 2.0 150 JOE WRIGHT 10120 3.9 2.3 170 4.6 3.2 144 NORTH FRENCH CREEK 10130 6.8 2.9 234 7.1 3.1 229 OLD BATTLE 10000 6.8 2.7 252 7.1 3.3 215 SAGE CREEK BASIN 7850 1.0 .9 111 2.7 1.5 180 SOUTH BRUSH CREEK 8440 .8 .6 133 3.8 2.5 152 TOWER 10500 6.9 3.1 223 6.9 3.6 192 WEBBER SPRINGS 9250 3.3 1.6 206 6.0 2.8 214 WILLOW CREEK PASS 9540 .9 1.0 90 2.6 1.9 137 ----- ----- Basin wide percent of average 189 183 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.5 2.0 225 5.5 2.2 250 CASPER MTN. 7900 3.0 1.6 188 3.7 2.3 161 DEADMAN HILL 10220 1.2 2.0 60 4.5 2.3 196 DEER PARK 9700 4.6 1.9 242 5.6 2.3 243 LAPRELE CREEK 8375 1.4 .9 156 3.4 1.7 200 RENO HILL 8400 3.6 1.6 225 4.6 2.3 200 ROACH 9700 3.4 1.0 340 4.9 2.2 223 SAND LAKE 10050 7.3 3.0 243 7.4 2.8 264 SOUTH PASS 9040 3.9 1.4 279 4.7 1.9 247 WINDY PEAK 7900 1.5 .5 300 3.6 1.6 225 ----- ----- Basin wide percent of average 216 222 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .5 * 1.8 1.8 100 DIVIDE PEAK 8880 2.3 1.6 144 5.0 2.5 200 OLD BATTLE 10000 6.8 2.7 252 7.1 3.3 215 SANDSTONE RS 8150 .0 .4 0 2.2 2.2 100 WHISKEY PARK 8950 2.0 1.5 133 5.6 2.7 207 ----- ----- Basin wide percent of average 179 174 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 1.1 255 3.1 1.7 182 BLIND BULL SUM 8650 2.4 1.4 171 2.3 2.0 115 EAST RIM DIVIDE 7930 .2 .5 40 1.9 1.3 146 ELKHART PARK G.S. 9400 2.1 .8 262 2.7 1.8 150 GROS VENTRE SUMMIT 8750 2.0 1.3 154 2.3 1.7 135 GUNSIGHT PASS 9820 1.5 -M * 2.9 -M * KENDALL R.S. 7740 .2 .6 33 2.0 1.4 143 LOOMIS PARK 8240 .3 .8 37 2.4 1.7 141 NEW FORK LAKE 8340 .2 .5 40 1.6 1.4 114 SNIDER BASIN 8060 1.0 .6 167 2.7 1.4 193 SPRING CREEK DIVIDE 9000 3.1 1.3 238 3.9 2.3 170 TRIPLE PEAK 8500 2.9 1.0 290 4.3 2.0 215 ----- ----- Basin wide percent of average 174 156 LOWER GREEN RIVER HAMS FORK 7840 .4 .4 100 3.0 1.3 231 HEWINTA 9519 .7 .8 87 2.3 2.2 105 HICKERSON PARK 9145 2.3 .4 575 3.1 1.6 194 HOLE-IN-ROCK 9150 1.8 .4 450 3.3 1.6 206 INDIAN CREEK 9425 4.3 1.3 331 4.5 2.3 196 KELLEY R.S. 8180 -M .8 * -M 2.0 * STEEL CREEK PARK 10200 .8 1.5 53 3.0 2.1 143 ----- ----- Basin wide percent of average 215 173 UPPER BEAR RIVER BUG LAKE 7950 .3 1.1 27 3.2 2.2 145 HAYDEN FORK 9212 .7 .8 87 2.8 2.2 127 KELLEY R.S. 8180 -M .8 * -M 2.0 * LILY LAKE 9156 .6 .9 67 2.2 2.2 100 MONTE CRISTO 8960 1.8 1.4 129 3.8 2.6 146 SALT RIVER SUMMIT 7760 .2 .3 67 2.4 1.8 133 TRIAL LAKE 9992 2.3 1.8 128 2.8 2.5 112 ----- ----- Basin wide percent of average 94 127 ----------------------------------------------------------------------------- -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.