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 21 , 2006 ----------------------------------------------------------------------------- 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 1.4 157 COTTONWOOD CREEK 7600 1.0 .4 250* 2.9 2.0 145 GRANITE CREEK 6770 .1 .3 33* 2.4 1.2 200 GRASSY LAKE 7265 1.5 .7 214* 5.3 2.3 230 GROS VENTRE SUMMIT 8750 1.2 .9 133* 2.4 1.2 200 LEWIS LAKE DIVIDE 7850 1.1 .5 220* 3.8 2.1 181 PHILLIPS BENCH 8200 1.0 .7 143* 3.4 1.6 212 SALT RIVER SUMMIT 7600 .3 .1 300* 1.9 1.3 146 SNAKE RIVER STATION 6920 .4 .2 200* 4.2 1.5 280 SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.7 124 THUMB DIVIDE 7980 .2 .4 50* 2.1 1.4 150 TOGWOTEE PASS 9580 2.4 1.6 150* 3.0 1.9 158 TWO OCEAN PLATEAU 9240 1.1 1.9 58* 2.5 2.1 119 WILLOW CREEK 8450 1.2 .9 133* 3.3 2.5 132 ----- ----- Basin wide percent of average 129* 171 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 1.9 1.8 106* 2.3 1.4 164 BLACK BEAR 8170 2.2 1.5 147* 5.0 2.3 217 CANYON 8090 .8 .4 200* 2.8 1.2 233 FISHER CREEK 9100 -M 1.6 * -M 2.2 * MADISON PLATEAU 7750 .7 .9 78* 2.8 1.7 165 NORTHEAST ENTRANCE 7350 .1 .2 50* 3.3 1.0 330 PARKER PEAK 9400 1.3 1.7 76* 2.7 1.5 180 SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229 THUMB DIVIDE 7980 .2 .4 50* 2.1 1.4 150 TWO OCEAN PLATEAU 9240 1.1 1.9 58* 2.5 2.1 119 WHISKEY CREEK 6800 .3 .3 100* -M 1.5 * WHITE MILL 8700 2.1 1.2 175* 3.6 1.8 200 WOLVERINE 7650 .1 .2 50* 1.7 1.2 142 ----- ----- Basin wide percent of average 99* 189 WIND RIVER BURROUGHS CREEK 8750 1.4 .5 280* 2.2 1.1 200 COLD SPRINGS 9630 .3 .5 60* 1.1 1.3 85 DEER PARK 9700 1.1 1.5 73* 2.3 1.7 135 HOBBS PARK 10100 1.1 1.3 85* 1.3 1.4 93 LITTLE WARM 9370 .9 .6 150* .9 1.2 75 SOUTH PASS 9040 .8 .8 100* 2.3 1.4 164 ST. LAWRENCE ALT 8620 .6 .4 150* 1.2 1.2 100 TOGWOTEE PASS 9580 2.4 1.6 150* 3.0 1.9 158 TOWNSEND CREEK 8700 1.2 .6 200* 2.4 1.4 171 ----- ----- Basin wide percent of average 126* 133 BIGHORN BASIN BALD MTN. 9380 4.2 2.0 210* 2.9 1.6 181 BEAR TRAP MEADOW 8200 .1 .3 33* .7 1.2 58 BLACKWATER 9780 1.3 2.1 62* 2.0 1.8 111 BONE SPRINGS DIV 9350 3.5 1.8 194* 2.4 1.7 141 EVENING STAR 9200 1.9 1.8 106* 3.1 1.9 163 GRAVE SPRINGS 8550 .3 .6 50* .8 1.4 57 KIRWIN 9550 1.2 1.2 100* 1.6 1.2 133 MARQUETTE 8760 .4 1.3 31 1.3 1.5 87 MIDDLE POWDER 7760 .8 .8 100* 1.0 1.7 59 OWL CREEK 8975 1.2 .5 240* 1.7 .8 212 POWDER RIVER PASS 9480 .7 .8 87* 1.3 1.3 100 SHELL CREEK 9580 3.6 2.0 180 1.8 1.4 129 SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229 SYLVAN ROAD 7120 .4 .2 200* 2.7 1.4 193 TIMBER CREEK 7950 .0 .5 0* 1.5 1.1 136 YOUNTS PEAK 8350 .6 .9 67* 1.6 1.2 133 ----- ----- Basin wide percent of average 117* 132 SHOSHONE RIVER BLACKWATER 9780 1.3 2.1 62* 2.0 1.8 111 EVENING STAR 9200 1.9 1.8 106* 3.1 1.9 163 KIRWIN 9550 1.2 1.2 100* 1.6 1.2 133 MARQUETTE 8760 .4 1.3 31 1.3 1.5 87 SYLVAN LAKE 8420 .9 1.3 69* 3.9 1.7 229 SYLVAN ROAD 7120 .4 .2 200* 2.7 1.4 193 YOUNTS PEAK 8350 .6 .9 67* 1.6 1.2 133 ----- ----- Basin wide percent of average 76* 151 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .3 33* .7 1.2 58 BIG GOOSE 7990 .4 .5 80* .8 1.4 57 BONE SPRINGS DIV 9350 3.5 1.8 194* 2.4 1.7 141 BURGESS JUNCTION 7880 .9 1.0 90* 2.0 1.5 133 CLOUD PEAK RESERVOIR 9860 .6 .8 75* 1.1 1.7 65 DOME LAKE 8880 .7 1.1 64* 1.4 1.7 82 GRAVE SPRINGS 8550 .3 .6 50* .8 1.4 57 HANSEN SAWMILL 8360 .4 .4 100* .3 1.2 25 MIDDLE POWDER 7760 .8 .8 100* 1.0 1.7 59 POWDER RIVER PASS 9480 .7 .8 87* 1.3 1.3 100 SUCKER CREEK 8880 1.4 .8 175* 1.9 1.6 119 TIE CREEK 6870 .3 .3 100* 2.3 1.7 135 ----- ----- Basin wide percent of average 110* 88 BELLE FOURCHE BLIND PARK 6890 -M .2 * 1.2 1.7 71 COLE CANYON 5910 .0 .3 0* 1.2 -M * NORTH RAPID CREEK 6130 .1 .2 50* .8 1.7 47 ----- ----- Basin wide percent of average 20* 59 UPPER N. PLATTE RIVER COLUMBINE 9160 1.5 .3 500* 3.5 1.6 219 DIVIDE PEAK 8860 3.0 1.1 273* 4.6 1.8 256 ELK RIVER 8700 1.6 .3 533* 3.1 1.5 207 JOE WRIGHT 10120 1.9 1.5 127* 3.0 2.3 130 NORTH FRENCH CREEK 10130 3.0 2.1 143* 3.9 2.3 170 OLD BATTLE 9920 3.7 1.8 206* 4.9 2.4 204 SAGE CREEK BASIN 7850 2.6 .5 520* 3.2 1.0 320 SOUTH BRUSH CREEK 8440 1.5 .4 375* 2.1 1.7 124 TOWER 10500 4.2 2.0 210* 5.8 2.6 223 WEBBER SPRINGS 9250 2.4 1.0 240* 4.5 2.1 214 WILLOW CREEK PASS 9540 1.5 .6 250* 1.4 1.4 100 ----- ----- Basin wide percent of average 232* 193 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 2.2 1.4 157* 2.8 1.7 165 CASPER MTN. 7850 .7 1.0 70* 1.1 1.7 65 DEADMAN HILL 10220 1.0 1.4 71* 2.0 1.7 118 DEER PARK 9700 1.1 1.5 73* 2.3 1.7 135 LAPRELE CREEK 8375 .8 .6 133* 1.1 1.3 85 RENO HILL 8500 1.5 1.1 136* 2.1 1.7 124 ROACH 9700 2.3 .7 329* 3.1 1.5 207 SAND LAKE 10050 2.8 2.0 140* 3.4 2.1 162 SOUTH PASS 9040 .8 .8 100* 2.3 1.4 164 WINDY PEAK 7900 1.0 .3 333* 1.1 1.2 92 ----- ----- Basin wide percent of average 131* 133 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .4 .2 200* 2.5 1.3 192 DIVIDE PEAK 8860 3.0 1.1 273* 4.6 1.8 256 OLD BATTLE 9920 3.7 1.8 206* 4.9 2.4 204 SANDSTONE RS 8150 .8 .3 267* 2.9 1.5 193 WHISKEY PARK 8950 2.1 1.0 210* 4.1 1.9 216 ----- ----- Basin wide percent of average 227* 213 UPPER GREEN RIVER BIG SANDY OPENING 9080 .9 .7 129* 1.6 1.2 133 BLIND BULL SUM 8900 1.1 .9 122* 2.0 1.5 133 EAST RIM DIVIDE 7930 .0 .2 0* 1.7 .9 189 ELKHART PARK G.S. 9400 .3 .4 75* 2.0 1.3 154 GROS VENTRE SUMMIT 8750 1.2 .9 133* 2.4 1.2 200 KENDALL R.S. 7740 -M .2 * -M 1.0 * LOOMIS PARK 8240 .3 .5 60* 2.1 1.2 175 NEW FORK LAKE 8340 .4 .2 200* 1.1 1.0 110 SNIDER BASIN 8060 .5 .3 167* 1.4 1.1 127 SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.7 124 TRIPLE PEAK 8500 .9 .6 150* 2.2 1.5 147 ----- ----- Basin wide percent of average 120* 148 LOWER GREEN RIVER HAMS FORK 7840 .2 .2 100* 1.4 1.0 140 HEWINTA 9500 .6 .6 100* 2.7 1.6 169 HICKERSON PARK 9100 .9 .2 450* 1.9 1.2 158 HOLE-IN-ROCK 9150 .7 .2 350* 2.2 1.1 200 INDIAN CREEK 9425 .9 .8 112* 2.0 1.7 118 KELLEY R.S. 8180 .4 .5 80* 1.7 1.4 121 STEEL CREEK PARK 10100 1.5 1.1 136* 2.8 1.5 187 ----- ----- Basin wide percent of average 144* 155 UPPER BEAR RIVER BUG LAKE 7950 .8 .8 100* 1.8 1.5 120 HAYDEN FORK 9100 .3 .6 50* 4.0 1.6 250 KELLEY R.S. 8180 .4 .5 80* 1.7 1.4 121 LILY LAKE 9050 .6 .6 100* 2.7 1.6 169 MONTE CRISTO 8960 .9 1.1 82* 3.4 1.9 179 SALT RIVER SUMMIT 7600 .3 .1 300* 1.9 1.3 146 TRIAL LAKE 9960 .7 1.2 58* 3.6 1.9 189 ----- ----- Basin wide percent of average 82* 171 ----------------------------------------------------------------------------- -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 1971-2000. 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.