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 21 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .2 0* 3.2 1.2 267 COTTONWOOD CREEK 7670 .1 .3 33* 4.3 1.8 239 GRAND TARGHEE 9260 2.5 -M * 5.0 -M * GRANITE CREEK 6770 .0 .2 0* 2.3 1.1 209 GRASSY LAKE 7265 .1 .6 17* 5.1 2.0 255 GROS VENTRE SUMMIT 8750 .4 .8 50* 2.0 1.2 167 GUNSIGHT PASS 9820 .9 -M * 2.4 -M * LEWIS LAKE DIVIDE 7850 .2 .4 50* 4.1 1.8 228 PHILLIPS BENCH 8200 .0 .6 0* 2.5 1.4 179 SALT RIVER SUMMIT 7760 .0 .1 0* 2.2 1.2 183 SNAKE RIVER STATION 6920 .1 .2 50* 3.4 1.4 243 SPRING CREEK DIVIDE 9000 1.2 .7 171* 3.2 1.4 229 THUMB DIVIDE 7980 .0 .3 0* 2.4 1.3 185 TOGWOTEE PASS 9580 1.3 1.5 87* 2.8 1.7 165 TWO OCEAN PLATEAU 9240 3.0 1.8 167* 3.5 1.9 184 WILLOW CREEK 8380 .1 .8 13* 4.9 2.3 213 ----- ----- Basin wide percent of average 76* 212 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.3 1.7 76* 2.1 1.3 162 BLACK BEAR 8170 1.9 1.1 173* 4.7 2.0 235 CANYON 7870 .0 .3 0* 1.5 1.1 136 FISHER CREEK 9100 1.4 1.4 100* 3.5 2.0 175 MADISON PLATEAU 7750 .0 .6 0* 3.7 1.6 231 NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 1.0 160 PARKER PEAK 9400 .7 1.8 39* 2.0 1.6 125 SYLVAN LAKE 8420 .1 1.1 9* 3.5 1.6 219 THUMB DIVIDE 7980 .0 .3 0* 2.4 1.3 185 TWO OCEAN PLATEAU 9240 3.0 1.8 167* 3.5 1.9 184 WHISKEY CREEK 6800 .0 .2 0* 3.1 1.3 238 WHITE MILL 8700 .8 1.0 80* 2.8 1.7 165 WOLVERINE 7650 .0 .2 0* 1.7 1.2 142 ----- ----- Basin wide percent of average 79* 184 WIND RIVER BURROUGHS CREEK 8750 .2 .5 40* 1.3 1.0 130 CASTLE CREEK 8400 .1 -M * 1.1 -M * COLD SPRINGS 9630 .1 .6 17* 1.6 1.2 133 DEER PARK 9700 .9 1.1 82* 2.3 1.6 144 HOBBS PARK 10100 1.5 1.4 107* 2.3 1.4 164 LITTLE WARM 9370 .0 .7 0* 1.6 1.1 145 SOUTH PASS 9040 .7 .7 100* 2.1 1.3 162 ST. LAWRENCE ALT 8620 .0 .5 0* 1.1 1.1 100 TOGWOTEE PASS 9580 1.3 1.5 87* 2.8 1.7 165 TOWNSEND CREEK 8700 .2 .6 33* 2.3 1.4 164 ----- ----- Basin wide percent of average 64* 147 BIGHORN BASIN BALD MTN. 9380 2.8 1.9 147* 3.2 1.6 200 BEAR TRAP MEADOW 8200 .5 .4 125* 1.7 1.2 142 BLACKWATER 9780 2.6 2.1 124* 3.0 1.7 176 BONE SPRINGS DIV 9350 3.0 1.8 167* 3.8 1.7 224 EVENING STAR 9200 .5 1.6 31* 3.0 1.7 176 GRAVE SPRINGS 8550 .5 .8 63* 1.8 1.5 120 KIRWIN 9550 1.5 1.2 125* 2.7 1.1 245 MARQUETTE 8760 .2 -M * 3.3 1.5 220 MIDDLE POWDER 7760 .9 1.0 90* 3.9 1.8 217 OWL CREEK 8975 .8 .6 133 1.5 .8 188 POWDER RIVER PASS 9480 1.6 .8 200* 2.7 1.3 208 SHELL CREEK 9580 3.6 2.0 180 3.4 1.4 243 SYLVAN LAKE 8420 .1 1.1 9* 3.5 1.6 219 SYLVAN ROAD 7120 .0 .2 0* 1.9 1.1 173 TIMBER CREEK 7950 .0 .6 0 3.5 1.1 318 YOUNTS PEAK 8350 .2 .8 25* 2.2 1.2 183 ----- ----- Basin wide percent of average 110* 202 SHOSHONE RIVER BLACKWATER 9780 2.6 2.1 124* 3.0 1.7 176 EVENING STAR 9200 .5 1.6 31* 3.0 1.7 176 KIRWIN 9550 1.5 1.2 125* 2.7 1.1 245 MARQUETTE 8760 .2 -M * 3.3 1.5 220 SYLVAN LAKE 8420 .1 1.1 9* 3.5 1.6 219 SYLVAN ROAD 7120 .0 .2 0* 1.9 1.1 173 YOUNTS PEAK 8350 .2 .8 25* 2.2 1.2 183 ----- ----- Basin wide percent of average 70* 198 POWDER-TONGUE BEAR TRAP MEADOW 8200 .5 .4 125* 1.7 1.2 142 BIG GOOSE 7990 1.3 .5 260* 4.0 1.5 267 BONE SPRINGS DIV 9350 3.0 1.8 167* 3.8 1.7 224 BURGESS JUNCTION 7880 1.3 1.0 130* 3.8 1.5 253 CLOUD PEAK RESERVOIR 9860 1.5 1.0 150* 3.4 1.8 189 DOME LAKE 8880 2.0 1.2 167* 4.1 1.7 241 GRAVE SPRINGS 8550 .5 .8 63* 1.8 1.5 120 HANSEN SAWMILL 8360 .1 .4 25* 1.6 1.2 133 LITTLE GOOSE 8870 1.5 -M * 4.4 -M * MIDDLE POWDER 7760 .9 1.0 90* 3.9 1.8 217 POWDER RIVER PASS 9480 1.6 .8 200* 2.7 1.3 208 SOLDIER PARK 8720 .0 -M * 2.3 -M * SUCKER CREEK 8880 2.3 .9 256* 3.9 1.6 244 TIE CREEK 6870 .0 .4 0* 4.2 1.8 233 ----- ----- Basin wide percent of average 147* 209 BELLE FOURCHE BLIND PARK 6890 .0 .1 0* 1.0 1.7 59 COLE CANYON 5910 .0 .4 0* 1.3 1.2 108 NORTH RAPID CREEK 6130 .1 .2 50* .6 1.7 35 ----- ----- Basin wide percent of average 14* 63 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 1.6 -M * 3.2 -M * CINNABAR PARK 9574 .4 .6 67* 2.5 1.4 179 COLUMBINE 9160 .0 .2 0* 2.0 1.4 143 DIVIDE PEAK 8880 .2 1.0 20* 2.5 1.8 139 ELK RIVER 8700 .0 .3 0* 2.0 1.4 143 JOE WRIGHT 10120 .6 1.4 43* 2.3 2.2 105 NORTH FRENCH CREEK 10130 1.8 2.0 90* 3.2 2.0 160 OLD BATTLE 10000 1.7 1.7 100* 3.1 2.2 141 SAGE CREEK BASIN 7850 .0 .6 0* 1.6 1.0 160 SOUTH BRUSH CREEK 8440 .1 .3 33* 2.3 1.7 135 TOWER 10500 .7 1.7 41* 2.7 2.3 117 WEBBER SPRINGS 9250 .2 .9 22* 2.8 1.9 147 WILLOW CREEK PASS 9540 1.6 .6 267* -M 1.3 * ----- ----- Basin wide percent of average 65* 140 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .4 1.3 31* 2.5 1.5 167 CASPER MTN. 7900 1.8 1.0 180* 4.9 1.6 306 DEADMAN HILL 10220 1.0 1.4 71* 2.0 1.6 125 DEER PARK 9700 .9 1.1 82* 2.3 1.6 144 LAPRELE CREEK 8375 .0 .5 0* 1.9 1.2 158 RENO HILL 8400 1.5 1.1 136* 3.2 1.6 200 ROACH 9700 .8 .5 160* 2.2 1.5 147 SAND LAKE 10050 2.3 1.9 121* 3.0 1.9 158 SOUTH PASS 9040 .7 .7 100* 2.1 1.3 162 WINDY PEAK 7900 .2 .2 100* 1.2 1.1 109 ----- ----- Basin wide percent of average 99* 170 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .2 0* 1.4 1.2 117 DIVIDE PEAK 8880 .2 1.0 20* 2.5 1.8 139 OLD BATTLE 10000 1.7 1.7 100* 3.1 2.2 141 SANDSTONE RS 8150 -M .2 * 1.4 1.5 93 WHISKEY PARK 8950 .0 .9 0* 2.8 1.9 147 ----- ----- Basin wide percent of average 50* 130 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .7 114* 1.9 1.1 173 BLIND BULL SUM 8650 .7 .8 88* 2.1 1.3 162 EAST RIM DIVIDE 7930 .2 .2 100* 2.0 .8 250 ELKHART PARK G.S. 9400 .7 .4 175* 2.6 1.3 200 GROS VENTRE SUMMIT 8750 .4 .8 50* 2.0 1.2 167 GUNSIGHT PASS 9820 .9 -M * 2.4 -M * KENDALL R.S. 7740 .1 .2 50* 2.1 1.0 210 LOOMIS PARK 8240 .1 .4 25* 2.3 1.1 209 NEW FORK LAKE 8340 .1 .2 50* 2.5 1.0 250 POCKET CREEK 9360 1.4 -M * 2.6 -M * SNIDER BASIN 8060 .1 .3 33* 1.6 .9 178 SPRING CREEK DIVIDE 9000 1.2 .7 171* 3.2 1.4 229 TRIPLE PEAK 8500 .4 .5 80* 2.8 1.3 215 ----- ----- Basin wide percent of average 92* 202 LOWER GREEN RIVER HAMS FORK 7840 .1 .1 100* 2.3 .9 256 HEWINTA 9519 .0 .6 0* 2.7 1.5 180 HICKERSON PARK 9145 -M .2 * -M 1.1 * HOLE-IN-ROCK 9150 .1 .2 50* 2.9 1.1 264 INDIAN CREEK 9425 1.8 .7 257* 3.2 1.5 213 KELLEY R.S. 8180 .3 .4 75* 2.8 1.3 215 STEEL CREEK PARK 10200 1.5 1.0 150* 3.2 1.5 213 ----- ----- Basin wide percent of average 127* 219 UPPER BEAR RIVER BUG LAKE 7950 .0 .7 0* 1.5 1.5 100 HAYDEN FORK 9212 .1 .5 20* 3.9 1.5 260 KELLEY R.S. 8180 .3 .4 75* 2.8 1.3 215 LILY LAKE 9156 .0 .6 0* 2.7 1.5 180 MONTE CRISTO 8960 .0 1.0 0* 2.4 1.8 133 SALT RIVER SUMMIT 7760 .0 .1 0* 2.2 1.2 183 TRIAL LAKE 9992 .6 1.2 50* 2.4 1.7 141 ----- ----- Basin wide percent of average 22* 170 ----------------------------------------------------------------------------- -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.