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 THURSDAY: OCTOBER 18 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .2 50* 1.9 1.2 158 COTTONWOOD CREEK 7600 1.0 .3 333* 3.0 1.7 176 GRANITE CREEK 6770 .1 .2 50* 1.4 1.0 140 GRASSY LAKE 7265 .5 .5 100* 2.2 1.9 116 GROS VENTRE SUMMIT 8750 .9 .7 129* 2.0 1.0 200 LEWIS LAKE DIVIDE 7850 .0 .3 0* 1.3 1.8 72 PHILLIPS BENCH 8200 .3 .4 75* 1.8 1.4 129 SALT RIVER SUMMIT 7600 .2 .1 200* 1.6 1.1 145 SNAKE RIVER STATION 6920 .1 .1 100* 1.9 1.3 146 SPRING CREEK DIVIDE 9000 .5 .5 100* 1.5 1.5 100 THUMB DIVIDE 7980 .0 .2 0* 2.0 1.2 167 TOGWOTEE PASS 9580 2.1 1.3 162* 3.0 1.6 188 TWO OCEAN PLATEAU 9240 2.3 1.6 144* 3.1 1.8 172 WILLOW CREEK 8450 1.0 .7 143* 3.2 2.1 152 ----- ----- Basin wide percent of average 128* 145 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 2.3 1.5 153* 2.1 1.2 175 BLACK BEAR 8170 1.7 1.2 142* 3.1 2.0 155 CANYON 8090 .1 .3 33* 2.1 1.0 210 FISHER CREEK 9100 3.2 1.3 246* 3.4 1.9 179 MADISON PLATEAU 7750 .0 .6 0* 2.3 1.4 164 NORTHEAST ENTRANCE 7350 -M .1 * -M .9 * PARKER PEAK 9400 2.2 1.4 157* 3.1 1.3 238 SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193 THUMB DIVIDE 7980 .0 .2 0* 2.0 1.2 167 TWO OCEAN PLATEAU 9240 2.3 1.6 144* 3.1 1.8 172 WHISKEY CREEK 6800 .0 .2 0* 2.2 1.3 169 WHITE MILL 8700 2.3 .9 256* 2.6 1.5 173 WOLVERINE 7650 .0 .2 0* 1.4 1.0 140 ----- ----- Basin wide percent of average 140* 177 WIND RIVER BURROUGHS CREEK 8750 .0 .4 0* 1.8 .9 200 COLD SPRINGS 9630 .0 .4 0* 1.7 1.1 155 DEER PARK 9700 .9 1.1 82* 2.4 1.4 171 HOBBS PARK 10100 .7 1.0 70* 2.4 1.2 200 LITTLE WARM 9370 .3 .5 60* 1.8 1.0 180 SOUTH PASS 9040 .1 .6 17* 1.8 1.2 150 ST. LAWRENCE ALT 8620 .0 .2 0* 1.1 1.0 110 TOGWOTEE PASS 9580 2.1 1.3 162* 3.0 1.6 188 TOWNSEND CREEK 8700 .0 .4 0* 2.1 1.2 175 ----- ----- Basin wide percent of average 69* 171 BIGHORN BASIN BALD MTN. 9380 2.4 1.7 141* 2.9 1.4 207 BEAR TRAP MEADOW 8200 .1 .3 33* 1.0 1.0 100 BLACKWATER 9780 2.1 1.8 117* 2.4 1.5 160 BONE SPRINGS DIV 9350 .8 1.5 53* 2.7 1.4 193 EVENING STAR 9200 2.1 1.5 140* 3.0 1.6 188 GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133 KIRWIN 9550 2.0 1.0 200* 2.9 1.0 290 MARQUETTE 8760 .1 1.1 9* 1.7 1.3 131 MIDDLE POWDER 7760 1.3 .7 186* 1.5 1.5 100 OWL CREEK 8975 .2 .4 50* 1.8 .7 257 POWDER RIVER PASS 9480 .3 .6 50* 2.0 1.1 182 SHELL CREEK 9580 2.4 1.8 133 3.1 1.2 258 SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193 SYLVAN ROAD 7120 .1 .2 50* 2.4 1.2 200 TIMBER CREEK 7950 .0 .3 0* 2.2 .9 244 YOUNTS PEAK 8350 1.2 .7 171* 2.2 1.0 220 ----- ----- Basin wide percent of average 107* 186 SHOSHONE RIVER BLACKWATER 9780 2.1 1.8 117* 2.4 1.5 160 EVENING STAR 9200 2.1 1.5 140* 3.0 1.6 188 KIRWIN 9550 2.0 1.0 200* 2.9 1.0 290 MARQUETTE 8760 .1 1.1 9* 1.7 1.3 131 SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193 SYLVAN ROAD 7120 .1 .2 50* 2.4 1.2 200 YOUNTS PEAK 8350 1.2 .7 171* 2.2 1.0 220 ----- ----- Basin wide percent of average 111* 192 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .3 33* 1.0 1.0 100 BIG GOOSE 7990 .6 .4 150* 2.3 1.2 192 BONE SPRINGS DIV 9350 .8 1.5 53* 2.7 1.4 193 BURGESS JUNCTION 7880 .8 .8 100* 2.0 1.3 154 CLOUD PEAK RESERVOIR 9860 1.4 .6 233* 3.0 1.5 200 DOME LAKE 8880 .8 .9 89* 2.6 1.4 186 GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133 HANSEN SAWMILL 8360 .0 .3 0* 1.7 1.0 170 MIDDLE POWDER 7760 1.3 .7 186* 1.5 1.5 100 POWDER RIVER PASS 9480 .3 .6 50* 2.0 1.1 182 SUCKER CREEK 8880 .8 .7 114* 1.9 1.4 136 TIE CREEK 6870 .3 .2 150* 1.9 1.4 136 ----- ----- Basin wide percent of average 103* 157 BELLE FOURCHE BLIND PARK 6890 .0 .1 0* .8 1.5 53 COLE CANYON 5910 .0 .2 0* .8 -M * NORTH RAPID CREEK 6130 .0 .2 0* .7 1.4 50 ----- ----- Basin wide percent of average 0* 52 UPPER N. PLATTE RIVER COLUMBINE 9160 .6 .2 300* 2.7 1.4 193 DIVIDE PEAK 8860 .2 .9 22* -M 1.5 * ELK RIVER 8700 .0 .2 0* 1.9 1.3 146 JOE WRIGHT 10120 1.5 1.1 136* 3.6 1.9 189 NORTH FRENCH CREEK 10130 .5 1.7 29* 2.0 1.9 105 OLD BATTLE 9920 1.2 1.5 80* 2.6 2.0 130 SAGE CREEK BASIN 7850 .0 .4 0* 1.4 .9 156 SOUTH BRUSH CREEK 8440 .1 .3 33* 1.4 1.5 93 TOWER 10500 1.8 1.5 120* 3.4 2.2 155 WEBBER SPRINGS 9250 .4 .8 50* 2.2 1.8 122 WILLOW CREEK PASS 9540 1.2 .5 240* 1.9 1.2 158 ----- ----- Basin wide percent of average 82* 143 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 .1 1.1 9* 1.4 1.4 100 CASPER MTN. 7850 .2 .8 25* 1.6 1.4 114 DEADMAN HILL 10220 1.5 1.1 136* 2.1 1.4 150 DEER PARK 9700 .9 1.1 82* 2.4 1.4 171 LAPRELE CREEK 8375 .0 .4 0* .9 1.1 82 RENO HILL 8500 .1 .9 11* 1.3 1.4 93 ROACH 9700 1.0 .5 200* 2.1 1.3 162 SAND LAKE 10050 1.7 1.7 100* 2.4 1.8 133 SOUTH PASS 9040 .1 .6 17* 1.8 1.2 150 WINDY PEAK 7900 .2 .2 100* .7 1.0 70 ----- ----- Basin wide percent of average 69* 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .1 0* 1.1 1.1 100 DIVIDE PEAK 8860 .2 .9 22* -M 1.5 * OLD BATTLE 9920 1.2 1.5 80* 2.6 2.0 130 SANDSTONE RS 8150 .0 .2 0* 1.1 1.3 85 WHISKEY PARK 8950 .5 .7 71* 2.4 1.6 150 ----- ----- Basin wide percent of average 56* 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 .3 .6 50* 1.5 1.0 150 BLIND BULL SUM 8900 .4 .6 67* 1.2 1.3 92 EAST RIM DIVIDE 7930 .0 .1 0* 1.2 .8 150 ELKHART PARK G.S. 9400 .1 .3 33* 1.2 1.1 109 GROS VENTRE SUMMIT 8750 .9 .7 129* 2.0 1.0 200 KENDALL R.S. 7740 .2 .1 200* 1.3 .9 144 LOOMIS PARK 8240 .0 .3 0* 1.3 1.0 130 NEW FORK LAKE 8340 .2 .1 200* 1.4 .9 156 SNIDER BASIN 8060 .1 .2 50* .8 .9 89 SPRING CREEK DIVIDE 9000 .5 .5 100* 1.5 1.5 100 TRIPLE PEAK 8500 .6 .4 150* 1.6 1.3 123 ----- ----- Basin wide percent of average 85* 128 LOWER GREEN RIVER HAMS FORK 7840 .0 .1 0* 1.0 .8 125 HEWINTA 9500 .0 .5 0* 3.7 1.4 264 HICKERSON PARK 9100 -M .1 * -M 1.0 * HOLE-IN-ROCK 9150 .0 .1 0* 2.9 .9 322 INDIAN CREEK 9425 .5 .6 83* 1.6 1.5 107 KELLEY R.S. 8180 .5 .3 167* 2.1 1.2 175 STEEL CREEK PARK 10100 3.0 1.0 300* 3.8 1.3 292 ----- ----- Basin wide percent of average 154* 213 UPPER BEAR RIVER BUG LAKE 7950 .3 .6 50* .6 1.3 46 HAYDEN FORK 9100 .8 .5 160* 2.5 1.4 179 KELLEY R.S. 8180 .5 .3 167* 2.1 1.2 175 LILY LAKE 9050 .3 .5 60* 2.7 1.4 193 MONTE CRISTO 8960 .7 .9 78* 2.5 1.6 156 SALT RIVER SUMMIT 7600 .2 .1 200* 1.6 1.1 145 TRIAL LAKE 9960 .9 1.0 90* 1.7 1.6 106 ----- ----- Basin wide percent of average 95* 143 ----------------------------------------------------------------------------- -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.