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 20 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .3 33* 2.1 1.3 162 COTTONWOOD CREEK 7600 .5 .4 125* 2.1 1.9 111 GRANITE CREEK 6770 .1 .2 50* 2.3 1.1 209 GRASSY LAKE 7265 1.6 .7 229* 5.3 2.1 252 GROS VENTRE SUMMIT 8750 1.0 .8 125* 1.9 1.2 158 LEWIS LAKE DIVIDE 7850 1.2 .5 240* 3.9 2.0 195 PHILLIPS BENCH 8200 .6 .6 100* 3.0 1.5 200 SALT RIVER SUMMIT 7600 .0 .1 0* 1.6 1.2 133 SNAKE RIVER STATION 6920 .4 .2 200* 3.7 1.4 264 SPRING CREEK DIVIDE 9000 .7 .7 100* 1.7 1.7 100 THUMB DIVIDE 7980 .2 .3 67* 2.0 1.3 154 TOGWOTEE PASS 9580 2.1 1.5 140* 2.7 1.8 150 TWO OCEAN PLATEAU 9240 .9 1.8 50* 2.3 2.0 115 WILLOW CREEK 8450 .6 .8 75* 2.6 2.3 113 ----- ----- Basin wide percent of average 112* 163 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 1.7 1.7 100* 2.1 1.3 162 BLACK BEAR 8170 2.3 1.4 164* 5.0 2.2 227 CANYON 8090 .8 .3 267* 2.7 1.2 225 FISHER CREEK 9100 -M 1.5 * -M 2.1 * MADISON PLATEAU 7750 .7 .8 87* 2.8 1.6 175 NORTHEAST ENTRANCE 7350 .3 .2 150* 3.1 1.0 310 PARKER PEAK 9400 1.2 1.6 75* 2.7 1.5 180 SYLVAN LAKE 8420 1.0 1.2 83* 3.9 1.7 229 THUMB DIVIDE 7980 .2 .3 67* 2.0 1.3 154 TWO OCEAN PLATEAU 9240 .9 1.8 50* 2.3 2.0 115 WHISKEY CREEK 6800 .4 .3 133* -M 1.4 * WHITE MILL 8700 1.9 1.1 173* 3.5 1.7 206 WOLVERINE 7650 .3 .2 150* 1.7 1.2 142 ----- ----- Basin wide percent of average 107* 190 WIND RIVER BURROUGHS CREEK 8750 1.4 .5 280* 2.1 1.0 210 COLD SPRINGS 9630 .1 .5 20* .8 1.2 67 DEER PARK 9700 .5 1.4 36* 1.6 1.6 100 HOBBS PARK 10100 .3 1.2 25* .6 1.3 46 LITTLE WARM 9370 .6 .6 100* .9 1.1 82 SOUTH PASS 9040 .2 .8 25* 1.5 1.3 115 ST. LAWRENCE ALT 8620 .2 .3 67* .7 1.1 64 TOGWOTEE PASS 9580 2.1 1.5 140* 2.7 1.8 150 TOWNSEND CREEK 8700 .7 .5 140* 2.1 1.3 162 ----- ----- Basin wide percent of average 84* 111 BIGHORN BASIN BALD MTN. 9380 3.5 1.9 184* 2.5 1.5 167 BEAR TRAP MEADOW 8200 .1 .3 33* .8 1.1 73 BLACKWATER 9780 1.4 2.0 70* 2.0 1.7 118 BONE SPRINGS DIV 9350 3.0 1.7 176* 2.1 1.6 131 EVENING STAR 9200 1.8 1.7 106* 3.0 1.8 167 GRAVE SPRINGS 8550 .2 .5 40* .6 1.3 46 KIRWIN 9550 1.0 1.1 91* 1.7 1.2 142 MARQUETTE 8760 .2 1.2 17 1.0 1.5 67 MIDDLE POWDER 7760 .6 .8 75* .9 1.7 53 OWL CREEK 8975 1.0 .5 200* 1.4 .7 200 POWDER RIVER PASS 9480 .5 .7 71* 1.1 1.2 92 SHELL CREEK 9580 3.4 1.9 179 1.6 1.3 123 SYLVAN LAKE 8420 1.0 1.2 83* 3.9 1.7 229 SYLVAN ROAD 7120 .7 .2 350* 2.6 1.3 200 TIMBER CREEK 7950 .0 .4 0* 1.1 1.0 110 YOUNTS PEAK 8350 .6 .8 75* 2.1 1.2 175 ----- ----- Basin wide percent of average 112* 130 SHOSHONE RIVER BLACKWATER 9780 1.4 2.0 70* 2.0 1.7 118 EVENING STAR 9200 1.8 1.7 106* 3.0 1.8 167 KIRWIN 9550 1.0 1.1 91* 1.7 1.2 142 MARQUETTE 8760 .2 1.2 17 1.0 1.5 67 SYLVAN LAKE 8420 1.0 1.2 83* 3.9 1.7 229 SYLVAN ROAD 7120 .7 .2 350* 2.6 1.3 200 YOUNTS PEAK 8350 .6 .8 75* 2.1 1.2 175 ----- ----- Basin wide percent of average 82* 157 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .3 33* .8 1.1 73 BIG GOOSE 7990 .2 .5 40* .6 1.3 46 BONE SPRINGS DIV 9350 3.0 1.7 176* 2.1 1.6 131 BURGESS JUNCTION 7880 .4 .9 44* 1.5 1.4 107 CLOUD PEAK RESERVOIR 9860 .5 .8 62* 1.0 1.7 59 DOME LAKE 8880 .5 1.1 45* 1.2 1.6 75 GRAVE SPRINGS 8550 .2 .5 40* .6 1.3 46 HANSEN SAWMILL 8360 .4 .4 100* .4 1.2 33 MIDDLE POWDER 7760 .6 .8 75* .9 1.7 53 POWDER RIVER PASS 9480 .5 .7 71* 1.1 1.2 92 SUCKER CREEK 8880 1.0 .8 125* 1.5 1.5 100 TIE CREEK 6870 .0 .3 0* 1.9 1.6 119 ----- ----- Basin wide percent of average 84* 79 BELLE FOURCHE BLIND PARK 6890 -M .2 * .9 1.7 53 COLE CANYON 5910 .0 .3 0* .9 -M * NORTH RAPID CREEK 6130 .1 .2 50* .4 1.6 25 ----- ----- Basin wide percent of average 20* 39 UPPER N. PLATTE RIVER COLUMBINE 9160 .3 .3 100* 2.5 1.5 167 DIVIDE PEAK 8860 1.8 1.0 180* 3.4 1.7 200 ELK RIVER 8700 .9 .3 300* 2.3 1.4 164 JOE WRIGHT 10120 .8 1.4 57* 1.8 2.1 86 NORTH FRENCH CREEK 10130 1.4 2.0 70* 2.6 2.1 124 OLD BATTLE 9920 2.4 1.7 141* 3.7 2.3 161 SAGE CREEK BASIN 7850 1.7 .5 340* 2.2 1.0 220 SOUTH BRUSH CREEK 8440 .4 .4 100* 1.1 1.7 65 TOWER 10500 2.1 1.8 117* 4.0 2.5 160 WEBBER SPRINGS 9250 1.3 .9 144* 3.3 2.0 165 WILLOW CREEK PASS 9540 .7 .6 117* .7 1.3 54 ----- ----- Basin wide percent of average 127* 141 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.2 1.3 92* 1.8 1.6 112 CASPER MTN. 7850 .7 1.0 70* 1.1 1.6 69 DEADMAN HILL 10220 .6 1.3 46* 1.2 1.6 75 DEER PARK 9700 .5 1.4 36* 1.6 1.6 100 LAPRELE CREEK 8375 .4 .5 80* .7 1.2 58 RENO HILL 8500 .6 1.0 60* 1.3 1.6 81 ROACH 9700 1.5 .6 250* 2.2 1.5 147 SAND LAKE 10050 1.4 1.9 74* 2.0 2.0 100 SOUTH PASS 9040 .2 .8 25* 1.5 1.3 115 WINDY PEAK 7900 .4 .2 200* .9 1.1 82 ----- ----- Basin wide percent of average 75* 95 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .5 .2 250* 2.3 1.2 192 DIVIDE PEAK 8860 1.8 1.0 180* 3.4 1.7 200 OLD BATTLE 9920 2.4 1.7 141* 3.7 2.3 161 SANDSTONE RS 8150 .4 .2 200* 2.3 1.5 153 WHISKEY PARK 8950 1.2 .9 133* 3.2 1.8 178 ----- ----- Basin wide percent of average 158* 175 UPPER GREEN RIVER BIG SANDY OPENING 9080 .7 .7 100* 1.4 1.2 117 BLIND BULL SUM 8900 .6 .8 75* 1.6 1.4 114 EAST RIM DIVIDE 7930 .0 .2 0* 1.5 .9 167 ELKHART PARK G.S. 9400 .1 .4 25* 1.8 1.2 150 GROS VENTRE SUMMIT 8750 1.0 .8 125* 1.9 1.2 158 KENDALL R.S. 7740 -M .2 * -M 1.0 * LOOMIS PARK 8240 .1 .4 25* 1.8 1.2 150 NEW FORK LAKE 8340 .2 .2 100* 1.0 1.0 100 SNIDER BASIN 8060 .3 .3 100* 1.2 1.0 120 SPRING CREEK DIVIDE 9000 .7 .7 100* 1.7 1.7 100 TRIPLE PEAK 8500 .4 .5 80* 1.6 1.4 114 ----- ----- Basin wide percent of average 82* 127 LOWER GREEN RIVER HAMS FORK 7840 .2 .1 200* 1.2 .9 133 HEWINTA 9500 .3 .5 60* 2.6 1.5 173 HICKERSON PARK 9100 .6 .1 600* 1.6 1.1 145 HOLE-IN-ROCK 9150 .5 .1 500* 1.9 1.0 190 INDIAN CREEK 9425 .3 .8 37* 1.4 1.7 82 KELLEY R.S. 8180 .2 .4 50* 1.4 1.3 108 STEEL CREEK PARK 10100 1.3 1.1 118* 2.6 1.5 173 ----- ----- Basin wide percent of average 110* 141 UPPER BEAR RIVER BUG LAKE 7950 .6 .7 86* 1.6 1.5 107 HAYDEN FORK 9100 .0 .5 0* 3.8 1.5 253 KELLEY R.S. 8180 .2 .4 50* 1.4 1.3 108 LILY LAKE 9050 .3 .6 50* 2.5 1.5 167 MONTE CRISTO 8960 .5 1.0 50* 2.8 1.8 156 SALT RIVER SUMMIT 7600 .0 .1 0* 1.6 1.2 133 TRIAL LAKE 9960 .4 1.2 33* 3.4 1.8 189 ----- ----- Basin wide percent of average 44* 161 ----------------------------------------------------------------------------- -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.