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 TUESDAY: OCTOBER 27 , 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 .4 0 2.0 1.6 125 COTTONWOOD CREEK 7670 .0 .6 0 3.6 2.4 150 GRAND TARGHEE 9260 4.9 -M * 4.5 -M * GRANITE CREEK 6770 .1 .3 33 2.4 1.4 171 GRASSY LAKE 7265 .6 .9 67 3.1 2.6 119 GROS VENTRE SUMMIT 8750 1.9 1.1 173 2.1 1.5 140 GUNSIGHT PASS 9820 1.7 -M * 2.9 -M * LEWIS LAKE DIVIDE 7850 .4 .7 57 3.3 2.4 138 PHILLIPS BENCH 8200 .8 1.0 80 3.0 1.8 167 SALT RIVER SUMMIT 7760 .1 .2 50 2.3 1.5 153 SNAKE RIVER STATION 6920 .2 .3 67 2.6 1.8 144 SPRING CREEK DIVIDE 9000 3.0 1.1 273 3.7 2.0 185 THUMB DIVIDE 7980 .5 .5 100 3.6 1.7 212 TOGWOTEE PASS 9580 3.6 2.0 180 3.6 2.2 164 TWO OCEAN PLATEAU 9240 3.9 2.4 162 3.1 2.5 124 WILLOW CREEK 8380 1.5 1.3 115 4.9 3.0 163 ----- ----- Basin wide percent of average 130 152 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 3.0 2.2 136 2.4 1.7 141 BLACK BEAR 8170 4.1 2.0 205 5.4 2.7 200 CANYON 7870 1.0 .4 250 2.4 1.4 171 FISHER CREEK 9100 3.7 2.1 176 4.1 2.6 158 MADISON PLATEAU 7750 2.0 1.1 182 4.8 2.0 240 NORTHEAST ENTRANCE 7350 .1 .2 50 2.3 1.3 177 PARKER PEAK 9400 3.7 2.2 168 2.9 1.9 153 SYLVAN LAKE 8420 .8 1.4 57 2.4 2.1 114 THUMB DIVIDE 7980 .5 .5 100 3.6 1.7 212 TWO OCEAN PLATEAU 9240 3.9 2.4 162 3.1 2.5 124 WHISKEY CREEK 6800 .4 .4 100 3.0 1.8 167 WHITE MILL 8700 3.1 1.5 207 3.0 2.2 136 WOLVERINE 7650 .4 .3 133 1.7 1.5 113 ----- ----- Basin wide percent of average 160 162 WIND RIVER BURROUGHS CREEK 8750 3.0 .7 429 2.8 1.3 215 COLD SPRINGS 9630 2.7 .9 300 2.8 1.5 187 DEER PARK 9700 3.1 1.8 172 4.2 2.0 210 HOBBS PARK 10100 3.5 1.9 184 3.4 1.7 200 LITTLE WARM 9370 1.6 .9 178 2.3 1.4 164 SOUTH PASS 9040 2.7 1.3 208 3.6 1.7 212 ST. LAWRENCE ALT 8620 1.2 .7 171 2.9 1.4 207 TOGWOTEE PASS 9580 3.6 2.0 180 3.6 2.2 164 TOWNSEND CREEK 8700 2.2 .9 244 3.4 1.8 189 ----- ----- Basin wide percent of average 213 193 BIGHORN BASIN BALD MTN. 9380 3.2 2.2 145 2.8 2.0 140 BEAR TRAP MEADOW 8200 .9 .5 180 1.8 1.5 120 BLACKWATER 9780 3.8 2.6 146 3.2 2.2 145 BONE SPRINGS DIV 9350 2.2 2.1 105 2.5 2.1 119 EVENING STAR 9200 4.0 2.1 190 4.7 2.2 214 GRAVE SPRINGS 8550 2.2 1.0 220 3.1 1.8 172 KIRWIN 9550 2.6 1.5 173 2.2 1.5 147 MARQUETTE 8760 2.4 1.6 150 2.5 1.9 132 MIDDLE POWDER 7760 2.2 1.0 220 2.7 2.2 123 OWL CREEK 8975 2.3 .7 329 1.9 1.0 190 POWDER RIVER PASS 9480 1.9 1.0 190 2.3 1.6 144 SHELL CREEK 9580 3.0 2.3 130 2.6 1.7 153 SYLVAN LAKE 8420 .8 1.4 57 2.4 2.1 114 SYLVAN ROAD 7120 .1 .3 33 2.1 1.5 140 TIMBER CREEK 7950 1.1 .8 138 2.1 1.3 162 YOUNTS PEAK 8350 1.7 1.1 155 2.0 1.5 133 ----- ----- Basin wide percent of average 155 146 SHOSHONE RIVER BLACKWATER 9780 3.8 2.6 146 3.2 2.2 145 EVENING STAR 9200 4.0 2.1 190 4.7 2.2 214 KIRWIN 9550 2.6 1.5 173 2.2 1.5 147 MARQUETTE 8760 2.4 1.6 150 2.5 1.9 132 SYLVAN LAKE 8420 .8 1.4 57 2.4 2.1 114 SYLVAN ROAD 7120 .1 .3 33 2.1 1.5 140 YOUNTS PEAK 8350 1.7 1.1 155 2.0 1.5 133 ----- ----- Basin wide percent of average 145 148 POWDER-TONGUE BEAR TRAP MEADOW 8200 .9 .5 180 1.8 1.5 120 BIG GOOSE 7990 1.0 .7 143 2.4 1.8 133 BONE SPRINGS DIV 9350 2.2 2.1 105 2.5 2.1 119 BURGESS JUNCTION 7880 2.4 1.2 200 3.1 1.9 163 CLOUD PEAK RESERVOIR 9860 2.5 1.3 192 3.0 2.2 136 DOME LAKE 8880 1.7 1.5 113 2.6 2.1 124 GRAVE SPRINGS 8550 2.2 1.0 220 3.1 1.8 172 HANSEN SAWMILL 8360 1.3 .7 186 2.0 1.5 133 MIDDLE POWDER 7760 2.2 1.0 220 2.7 2.2 123 POWDER RIVER PASS 9480 1.9 1.0 190 2.3 1.6 144 SUCKER CREEK 8880 2.6 1.0 260 3.4 2.0 170 TIE CREEK 6870 .7 .7 100 3.1 2.2 141 ----- ----- Basin wide percent of average 170 140 BELLE FOURCHE BLIND PARK 6890 .5 .2 250 3.1 2.2 141 COLE CANYON 5910 .3 .8 37 3.4 1.5 227 NORTH RAPID CREEK 6130 .6 .4 150 3.1 2.1 148 ----- ----- Basin wide percent of average 100 166 UPPER N. PLATTE RIVER COLUMBINE 9160 .4 .4 100 3.2 1.9 168 DIVIDE PEAK 8880 .8 1.4 57 3.6 2.2 164 ELK RIVER 8700 .0 .4 0 2.7 1.8 150 JOE WRIGHT 10120 3.1 1.9 163 3.4 2.8 121 NORTH FRENCH CREEK 10130 6.2 2.5 248 6.6 2.7 244 OLD BATTLE 10000 5.8 2.3 252 6.3 2.9 217 SAGE CREEK BASIN 7850 .1 .8 12 2.4 1.3 185 SOUTH BRUSH CREEK 8440 .4 .5 80 3.7 2.2 168 TOWER 10500 6.3 2.5 252 6.4 3.1 206 WEBBER SPRINGS 9250 1.9 1.3 146 4.7 2.5 188 WILLOW CREEK PASS 9540 .7 .9 78 2.1 1.7 124 ----- ----- Basin wide percent of average 172 180 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.1 1.7 241 4.8 1.9 253 CASPER MTN. 7900 .6 1.3 46 2.8 2.1 133 DEADMAN HILL 10220 .3 1.8 17 3.1 2.0 155 DEER PARK 9700 3.1 1.8 172 4.2 2.0 210 LAPRELE CREEK 8375 .4 .7 57 2.4 1.5 160 RENO HILL 8400 1.6 1.4 114 3.0 2.1 143 ROACH 9700 1.7 .8 212 3.4 1.9 179 SAND LAKE 10050 5.6 2.5 224 5.9 2.4 246 SOUTH PASS 9040 2.7 1.3 208 3.6 1.7 212 WINDY PEAK 7900 .7 .4 175 2.7 1.4 193 ----- ----- Basin wide percent of average 152 189 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .3 0 1.8 1.6 112 DIVIDE PEAK 8880 .8 1.4 57 3.6 2.2 164 OLD BATTLE 10000 5.8 2.3 252 6.3 2.9 217 SANDSTONE RS 8150 -M .3 * 2.0 1.9 105 WHISKEY PARK 8950 1.7 1.3 131 5.1 2.4 212 ----- ----- Basin wide percent of average 157 171 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.0 .9 333 3.2 1.5 213 BLIND BULL SUM 8650 2.4 1.2 200 2.2 1.7 129 EAST RIM DIVIDE 7930 .2 .4 50 1.9 1.1 173 ELKHART PARK G.S. 9400 2.4 .6 400 2.8 1.6 175 GROS VENTRE SUMMIT 8750 1.9 1.1 173 2.1 1.5 140 GUNSIGHT PASS 9820 1.7 -M * 2.9 -M * KENDALL R.S. 7740 .3 .4 75 2.1 1.2 175 LOOMIS PARK 8240 .4 .6 67 2.3 1.4 164 NEW FORK LAKE 8340 .2 .4 50 1.9 1.3 146 SNIDER BASIN 8060 1.0 .5 200 2.6 1.2 217 SPRING CREEK DIVIDE 9000 3.0 1.1 273 3.7 2.0 185 TRIPLE PEAK 8500 2.4 .8 300 4.0 1.8 222 ----- ----- Basin wide percent of average 215 177 LOWER GREEN RIVER HAMS FORK 7840 .3 .3 100 2.9 1.1 264 HEWINTA 9519 .0 .7 0 1.3 2.0 65 HICKERSON PARK 9145 .0 .3 0 1.2 1.4 86 HOLE-IN-ROCK 9150 .2 .3 67 1.6 1.4 114 INDIAN CREEK 9425 4.1 1.1 373 4.7 2.0 235 KELLEY R.S. 8180 1.0 .7 143 3.5 1.7 206 STEEL CREEK PARK 10200 -M 1.3 * 1.5 1.9 79 ----- ----- Basin wide percent of average 165 145 UPPER BEAR RIVER BUG LAKE 7950 .3 1.0 30 2.8 1.9 147 HAYDEN FORK 9212 .2 .7 29 2.2 2.0 110 KELLEY R.S. 8180 1.0 .7 143 3.5 1.7 206 LILY LAKE 9156 .2 .8 25 1.4 2.0 70 MONTE CRISTO 8960 1.3 1.2 108 3.6 2.3 157 SALT RIVER SUMMIT 7760 .1 .2 50 2.3 1.5 153 TRIAL LAKE 9992 2.0 1.5 133 2.6 2.2 118 ----- ----- Basin wide percent of average 84 135 ----------------------------------------------------------------------------- -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.