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 MONDAY: OCTOBER 26 , 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 -M .6 * -M 2.3 * GRAND TARGHEE 9260 4.8 -M * 4.3 -M * GRANITE CREEK 6770 .2 .3 67 2.4 1.3 185 GRASSY LAKE 7265 .3 .9 33 2.9 2.5 116 GROS VENTRE SUMMIT 8750 1.8 1.0 180 2.0 1.4 143 GUNSIGHT PASS 9820 1.4 -M * 2.8 -M * LEWIS LAKE DIVIDE 7850 -M .7 * -M 2.3 * PHILLIPS BENCH 8200 .6 .9 67 2.8 1.7 165 SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.5 153 SNAKE RIVER STATION 6920 .0 .3 0 2.6 1.7 153 SPRING CREEK DIVIDE 9000 2.8 1.0 280 3.5 1.8 194 THUMB DIVIDE 7980 .2 .5 40 3.4 1.6 212 TOGWOTEE PASS 9580 3.4 1.9 179 3.5 2.1 167 TWO OCEAN PLATEAU 9240 3.8 2.3 165 2.9 2.3 126 WILLOW CREEK 8380 1.5 1.2 125 4.9 2.9 169 ----- ----- Basin wide percent of average 135 159 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 2.7 2.1 129 2.0 1.6 125 BLACK BEAR 8170 3.8 1.8 211 5.1 2.5 204 CANYON 7870 .9 .4 225 2.3 1.4 164 FISHER CREEK 9100 3.5 1.9 184 3.7 2.5 148 MADISON PLATEAU 7750 1.8 1.0 180 4.5 2.0 225 NORTHEAST ENTRANCE 7350 .0 .2 0 2.1 1.2 175 PARKER PEAK 9400 3.4 2.2 155 2.6 1.9 137 SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115 THUMB DIVIDE 7980 .2 .5 40 3.4 1.6 212 TWO OCEAN PLATEAU 9240 3.8 2.3 165 2.9 2.3 126 WHISKEY CREEK 6800 .2 .4 50 2.9 1.7 171 WHITE MILL 8700 3.0 1.3 231 2.5 2.0 125 WOLVERINE 7650 .3 .3 100 1.5 1.5 100 ----- ----- Basin wide percent of average 153 156 WIND RIVER BURROUGHS CREEK 8750 2.7 .6 450 2.5 1.3 192 COLD SPRINGS 9630 2.5 .8 312 2.7 1.5 180 DEER PARK 9700 3.0 1.7 176 3.9 2.0 195 HOBBS PARK 10100 3.3 1.9 174 3.1 1.7 182 LITTLE WARM 9370 1.4 .8 175 2.1 1.4 150 SOUTH PASS 9040 2.6 1.2 217 3.4 1.6 212 ST. LAWRENCE ALT 8620 .8 .7 114 2.8 1.4 200 TOGWOTEE PASS 9580 3.4 1.9 179 3.5 2.1 167 TOWNSEND CREEK 8700 1.8 .8 225 3.2 1.7 188 ----- ----- Basin wide percent of average 207 185 BIGHORN BASIN BALD MTN. 9380 -M 2.2 * -M 1.9 * BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121 BLACKWATER 9780 3.6 2.5 144 2.9 2.1 138 BONE SPRINGS DIV 9350 2.1 2.0 105 2.2 2.0 110 EVENING STAR 9200 3.9 2.0 195 4.5 2.1 214 GRAVE SPRINGS 8550 2.0 .9 222 3.0 1.7 176 KIRWIN 9550 2.4 1.5 160 1.9 1.4 136 MARQUETTE 8760 2.3 1.5 153 2.3 1.9 121 MIDDLE POWDER 7760 2.0 1.0 200 2.4 2.1 114 OWL CREEK 8975 2.1 .7 300 1.7 .9 189 POWDER RIVER PASS 9480 1.9 .9 211 2.0 1.5 133 SHELL CREEK 9580 2.8 2.2 127 2.5 1.6 156 SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115 SYLVAN ROAD 7120 .0 .3 0 2.0 1.5 133 TIMBER CREEK 7950 .8 .8 100 2.0 1.3 154 YOUNTS PEAK 8350 1.3 1.1 118 1.8 1.5 120 ----- ----- Basin wide percent of average 148 141 SHOSHONE RIVER BLACKWATER 9780 3.6 2.5 144 2.9 2.1 138 EVENING STAR 9200 3.9 2.0 195 4.5 2.1 214 KIRWIN 9550 2.4 1.5 160 1.9 1.4 136 MARQUETTE 8760 2.3 1.5 153 2.3 1.9 121 SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115 SYLVAN ROAD 7120 .0 .3 0 2.0 1.5 133 YOUNTS PEAK 8350 1.3 1.1 118 1.8 1.5 120 ----- ----- Basin wide percent of average 136 142 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121 BIG GOOSE 7990 .7 .6 117 2.1 1.8 117 BONE SPRINGS DIV 9350 2.1 2.0 105 2.2 2.0 110 BURGESS JUNCTION 7880 2.2 1.2 183 2.7 1.8 150 CLOUD PEAK RESERVOIR 9860 2.4 1.3 185 2.2 2.1 105 DOME LAKE 8880 -M 1.4 * -M 2.0 * GRAVE SPRINGS 8550 2.0 .9 222 3.0 1.7 176 HANSEN SAWMILL 8360 1.2 .6 200 1.9 1.5 127 MIDDLE POWDER 7760 2.0 1.0 200 2.4 2.1 114 POWDER RIVER PASS 9480 1.9 .9 211 2.0 1.5 133 SUCKER CREEK 8880 2.4 1.0 240 2.8 2.0 140 TIE CREEK 6870 .5 .6 83 2.9 2.1 138 ----- ----- Basin wide percent of average 172 130 BELLE FOURCHE BLIND PARK 6890 .3 .2 150 3.0 2.0 150 COLE CANYON 5910 .1 .6 17 3.3 1.5 220 NORTH RAPID CREEK 6130 .4 .3 133 2.9 2.0 145 ----- ----- Basin wide percent of average 73 167 UPPER N. PLATTE RIVER COLUMBINE 9160 .2 .4 50 3.0 1.8 167 DIVIDE PEAK 8880 .6 1.3 46 3.6 2.1 171 ELK RIVER 8700 .0 .4 0 2.6 1.7 153 JOE WRIGHT 10120 2.7 1.8 150 3.3 2.7 122 NORTH FRENCH CREEK 10130 6.2 2.4 258 6.5 2.5 260 OLD BATTLE 10000 5.7 2.2 259 6.1 2.7 226 SAGE CREEK BASIN 7850 .0 .8 0 2.4 1.2 200 SOUTH BRUSH CREEK 8440 .4 .4 100 3.5 2.1 167 TOWER 10500 6.2 2.3 270 6.0 2.9 207 WEBBER SPRINGS 9250 1.8 1.2 150 4.6 2.3 200 WILLOW CREEK PASS 9540 .6 .8 75 1.9 1.6 119 ----- ----- Basin wide percent of average 174 184 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.0 1.6 250 4.8 1.8 267 CASPER MTN. 7900 .4 1.3 31 2.6 2.0 130 DEADMAN HILL 10220 .1 1.7 6 3.1 2.0 155 DEER PARK 9700 3.0 1.7 176 3.9 2.0 195 LAPRELE CREEK 8375 .2 .7 29 2.3 1.5 153 RENO HILL 8400 1.3 1.3 100 2.6 2.0 130 ROACH 9700 1.7 .7 243 3.2 1.8 178 SAND LAKE 10050 5.5 2.4 229 5.6 2.3 243 SOUTH PASS 9040 2.6 1.2 217 3.4 1.6 212 WINDY PEAK 7900 .6 .3 200 2.5 1.3 192 ----- ----- Basin wide percent of average 150 186 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .3 0 1.6 1.5 107 DIVIDE PEAK 8880 .6 1.3 46 3.6 2.1 171 OLD BATTLE 10000 5.7 2.2 259 6.1 2.7 226 SANDSTONE RS 8150 -M .3 * 2.0 1.8 111 WHISKEY PARK 8950 1.7 1.2 142 5.0 2.3 217 ----- ----- Basin wide percent of average 160 176 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 .9 300 2.9 1.4 207 BLIND BULL SUM 8650 2.2 1.1 200 2.2 1.6 138 EAST RIM DIVIDE 7930 .1 .3 33 1.8 1.0 180 ELKHART PARK G.S. 9400 2.1 .6 350 2.6 1.5 173 GROS VENTRE SUMMIT 8750 1.8 1.0 180 2.0 1.4 143 GUNSIGHT PASS 9820 1.4 -M * 2.8 -M * KENDALL R.S. 7740 .0 .4 0 2.0 1.2 167 LOOMIS PARK 8240 .2 .6 33 2.3 1.4 164 NEW FORK LAKE 8340 .0 .3 0 1.4 1.2 117 SNIDER BASIN 8060 .7 .5 140 2.4 1.2 200 SPRING CREEK DIVIDE 9000 2.8 1.0 280 3.5 1.8 194 TRIPLE PEAK 8500 2.4 .7 343 3.7 1.7 218 ----- ----- Basin wide percent of average 203 174 LOWER GREEN RIVER HAMS FORK 7840 -M .2 * -M 1.1 * HEWINTA 9519 -M .7 * 1.2 1.9 63 HICKERSON PARK 9145 .0 .3 0 1.0 1.3 77 HOLE-IN-ROCK 9150 .0 .3 0 1.6 1.3 123 INDIAN CREEK 9425 -M 1.0 * -M 1.9 * KELLEY R.S. 8180 .8 .6 133 3.1 1.6 194 STEEL CREEK PARK 10200 -M 1.3 * 1.5 1.8 83 ----- ----- Basin wide percent of average 67* 106 UPPER BEAR RIVER BUG LAKE 7950 -M .9 * -M 1.8 * HAYDEN FORK 9212 .2 .6 33 2.1 1.9 111 KELLEY R.S. 8180 .8 .6 133 3.1 1.6 194 LILY LAKE 9156 .0 .8 0 1.5 1.9 79 MONTE CRISTO 8960 -M 1.2 * -M 2.2 * SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.5 153 TRIAL LAKE 9992 1.7 1.4 121 2.6 2.1 124 ----- ----- Basin wide percent of average 75 129 ----------------------------------------------------------------------------- -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.