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 5 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 * .9 .3 300 BLACK BEAR 8170 1.2 .0 * .9 .6 150 BLIND BULL SUM 8650 .5 .0 * .6 .3 200 COTTONWOOD CREEK 7670 .3 .0 * .6 .4 150 EAST RIM DIVIDE 7930 .2 .0 * .5 .2 250 GRAND TARGHEE 9260 1.3 .8 162* .8 .6 133 GRANITE CREEK 6770 .1 .0 * .5 .3 167 GRASSY LAKE 7265 .4 .0 * .4 .6 67 GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .2 450 GUNSIGHT PASS 9820 1.8 .0 * 1.3 .4 325 LEWIS LAKE DIVIDE 7850 .1 .0 * .6 .5 120 PHILLIPS BENCH 8200 .0 .0 * .4 .4 100 SALT RIVER SUMMIT 7760 .0 .0 * .6 .3 200 SNAKE RIVER STATION 6920 .1 .0 * .5 .4 125 SPRING CREEK DIVIDE 9000 .2 .0 * .3 .3 100 THUMB DIVIDE 7980 .0 .0 * .4 .4 100 TOGWOTEE PASS 9580 2.5 .0 * 1.1 .4 275 TWO OCEAN PLATEAU 9240 2.2 .1 2200* 1.0 .5 200 WILLOW CREEK 8380 .5 .0 * 1.1 .5 220 YOUNTS PEAK 8350 -M .0 * -M .4 * ----- ----- Basin Index (%) 1389* 176 MADISON-GALLATIN BLACK BEAR 8170 1.2 .0 * .9 .6 150 CANYON 7870 -M .0 * 1.1 .3 367 MADISON PLATEAU 7750 .6 .0 * .9 .5 180 WEST YELLOWSTONE 6700 .0 .0 * .5 .4 125 WHISKEY CREEK 6800 .0 .0 * .6 .3 200 ----- ----- Basin Index (%) * 190 YELLOWSTONE BEARTOOTH LAKE 9360 1.5 .4 375* .3 .3 100 BURNT MTN 5880 -M .0 * -M .8 * CANYON 7870 -M .0 * 1.1 .3 367 COLE CREEK 7850 -M .4 * 2.2 .6 367 EVENING STAR 9200 2.2 .0 * 1.1 .5 220 FISHER CREEK 9100 2.4 .0 * .9 .5 180 NORTHEAST ENTRANCE 7350 .2 .0 * .4 .3 133 PARKER PEAK 9400 1.6 .3 533* .6 .5 120 SYLVAN LAKE 8420 1.1 .0 * 1.1 .5 220 THUMB DIVIDE 7980 .0 .0 * .4 .4 100 TWO OCEAN PLATEAU 9240 2.2 .1 2200* 1.0 .5 200 WHITE MILL 8700 1.5 .0 * .7 .5 140 WOLVERINE 7650 .2 .0 * .5 .4 125 ----- ----- Basin Index (%) 1612* 194 WIND RIVER BURROUGHS CREEK 8750 -M .0 * -M .3 * CASTLE CREEK 8400 .5 -M * .7 -M * COLD SPRINGS 9630 1.6 .0 * -M .4 * DEER PARK 9700 -M .0 * -M .6 * HOBBS PARK 10100 2.5 .0 * 1.9 .5 380 KIRWIN 9550 2.3 .0 * 1.2 .3 400 LITTLE WARM 9370 2.1 .0 * -M .3 * OWL CREEK 8975 1.2 .0 * 1.1 .3 367 SOUTH PASS 9040 1.5 .0 * 1.7 .4 425 ST. LAWRENCE ALT 8620 1.4 .0 * 1.5 .4 375 TOGWOTEE PASS 9580 2.5 .0 * 1.1 .4 275 TOWNSEND CREEK 8700 -M .0 * -M .5 * ----- ----- Basin Index (%) * 370 BIGHORN BASIN BALD MTN. 9380 -M .3 * 1.0 .4 250 BEAR TRAP MEADOW 8200 -M .0 * -M .3 * BONE SPRINGS DIV 9350 1.8 .4 450* 1.0 .5 200 GRAVE SPRINGS 8550 -M .0 * -M .5 * KIRWIN 9550 2.3 .0 * 1.2 .3 400 MARQUETTE 8760 3.0 -M * -M -M * MIDDLE POWDER 7760 3.4 .0 * 2.2 .4 550 OWL CREEK 8975 1.2 .0 * 1.1 .3 367 POWDER RIVER PASS 9480 2.3 .0 * 1.8 .4 450 SHELL CREEK 9580 2.7 .6 450* 1.5 .4 375 TIMBER CREEK 7950 1.4 .0 * 1.9 .4 475 ----- ----- Basin Index (%) 1510* 377 SHOSHONE RIVER BLACKWATER 9780 3.6 .0 * 1.5 .5 300 EVENING STAR 9200 2.2 .0 * 1.1 .5 220 MARQUETTE 8760 3.0 -M * -M -M * SYLVAN ROAD 7120 .7 .0 * 1.3 .4 325 YOUNTS PEAK 8350 -M .0 * -M .4 * ----- ----- Basin Index (%) * 279 POWDER RIVER BEAR TRAP MEADOW 8200 -M .0 * -M .3 * CLOUD PEAK RESERVOIR 9860 2.9 .0 * -M .4 * GRAVE SPRINGS 8550 -M .0 * -M .5 * HANSEN SAWMILL 8360 2.6 .0 * -M .3 * MIDDLE POWDER 7760 3.4 .0 * 2.2 .4 550 POWDER RIVER PASS 9480 2.3 .0 * 1.8 .4 450 SOLDIER PARK 8720 2.5 -M * 2.6 -M * ----- ----- Basin Index (%) * 500* TONGUE RIVER BIG GOOSE 7990 -M .0 * -M .5 * BONE SPRINGS DIV 9350 1.8 .4 450* 1.0 .5 200 BURGESS JUNCTION 7880 -M .0 * 1.7 .4 425 DOME LAKE 8880 -M .0 * -M .5 * LITTLE GOOSE 8870 3.0 -M * 3.0 -M * SUCKER CREEK 8880 2.5 .0 * 2.3 .4 575 TIE CREEK 6870 -M .0 * 2.4 .6 400 ----- ----- Basin Index (%) 1075* 389 BELLE FOURCHE COLE CANYON 5910 -M .0 * -M .3 * ----- ----- Basin Index (%) * * CHEYENNE RIVER BASIN BLIND PARK 6890 -M .0 * -M .4 * NORTH RAPID CREEK 6130 -M .0 * -M .4 * ----- ----- Basin Index (%) * * UPPER N. PLATTE ARAPAHO RIDGE 10960 1.0 .1 1000* 1.2 .5 240 BLACKHALL MTN 9820 1.2 -M * 1.4 -M * COLUMBINE 9160 .4 .0 * .7 .5 140 DIVIDE PEAK 8880 1.3 .0 * 1.5 .6 250 JOE WRIGHT 10120 .5 .0 * 1.1 .4 275 LAPRELE CREEK 8375 1.0 .0 * 1.0 .3 333 MED BOW 10500 1.0 -M * 1.2 -M * NORTH FRENCH CREEK 10130 .8 .0 * 1.0 .5 200 NEVER SUMMER 10280 .7 .0 * 1.0 -M * OLD BATTLE 10000 .9 .0 * .7 .7 100 RAWAH 9020 1.6 .0 * 1.5 .5 300 SAGE CREEK BASIN 7850 1.5 .0 * 1.4 .5 280 SAND LAKE 10050 1.2 .0 * 1.2 .5 240 SOUTH BRUSH CREEK 8440 .9 .0 * 1.0 .4 250 TOWER 10500 1.1 .0 * .9 .7 129 WEBBER SPRINGS 9250 .7 .0 * 1.2 .6 200 WILLOW CREEK PASS 9540 1.2 .0 * 1.1 .2 550 ZIRKEL 9340 .3 .0 * .6 .8 75 ----- ----- Basin Index (%) 15100* 209 SWEETWATER DEER PARK 9700 -M .0 * -M .6 * LARSEN CREEK 9000 .9 -M * 1.2 -M * SOUTH PASS 9040 1.5 .0 * 1.7 .4 425 ----- ----- Basin Index (%) * 425* LOWER N. PLATTE CASPER MTN. 7900 -M .0 * 2.1 .4 525 LAPRELE CREEK 8375 1.0 .0 * 1.0 .3 333 RENO HILL 8400 -M .0 * -M .4 * WINDY PEAK 7900 1.3 .0 * 1.6 .3 533 ----- ----- Basin Index (%) * 470 LARAMIE RIVER BROOKLYN LAKE 10240 .4 .0 * .6 .3 200 CINNABAR PARK 9574 .5 .0 * .8 .5 160 CROW CREEK 8330 .4 .0 * .8 .2 400 DEADMAN HILL 10220 .9 .0 * 1.0 .2 500 RAWAH 9020 1.6 .0 * 1.5 .5 300 ROACH 9700 -M .0 * -M .3 * ----- ----- Basin Index (%) * 276 S. PLATTE BLACK MOUNTAIN 8920 1.0 -M * 1.0 -M * CROW CREEK 8330 .4 .0 * .8 .2 400 DEADMAN HILL 10220 .9 .0 * 1.0 .2 500 ----- ----- Basin Index (%) * 450 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * .8 .4 200 DIVIDE PEAK 8880 1.3 .0 * 1.5 .6 250 ELK RIVER 8700 1.0 .0 * 1.0 .5 200 LITTLE SNAKE RIVER 8915 .5 .0 * 1.2 .7 171 OLD BATTLE 10000 .9 .0 * .7 .7 100 SAGE CREEK BASIN 7850 1.5 .0 * 1.4 .5 280 SANDSTONE RS 8150 .9 .0 * .9 .4 225 WHISKEY PARK 8950 .8 .0 * 1.1 .5 220 ----- ----- Basin Index (%) * 200 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .0 * .7 .3 233 BLIND BULL SUM 8650 .5 .0 * .6 .3 200 EAST RIM DIVIDE 7930 .2 .0 * .5 .2 250 ELKHART PARK G.S. 9400 .7 .0 * .7 .3 233 GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .2 450 GUNSIGHT PASS 9820 1.8 .0 * 1.3 .4 325 KENDALL R.S. 7740 .0 .0 * .6 .2 300 LOOMIS PARK 8240 .0 .0 * .7 .2 350 NEW FORK LAKE 8340 .4 .0 * .2 .2 100 POCKET CREEK 9360 1.5 -M * 1.2 -M * SNIDER BASIN 8060 .0 .0 * .3 .2 150 SPRING CREEK DIVIDE 9000 .2 .0 * .3 .3 100 TRIPLE PEAK 8500 .0 .0 * .5 .3 167 ----- ----- Basin Index (%) * 235 LOWER GREEN RIVER BLACKS FORK JCT 8870 -M -M * .5 -M * BUCK PASTURE 9700 .0 -M * .6 -M * EF BLACKS FORK GS 9360 .1 -M * .4 -M * HAMS FORK 7840 .0 .0 * .4 .2 200 HEWINTA 9519 .1 .0 * .6 .3 200 HICKERSON PARK 9145 .5 .0 * .6 .3 200 HOLE-IN-ROCK 9150 .0 .0 * .4 .4 100 INDIAN CREEK 9425 .0 .0 * .3 .3 100 KELLEY R.S. 8180 .1 .0 * .3 .3 100 SPIRIT LK 10235 .4 -M * .5 -M * STEEL CREEK PARK 10200 -M .0 * .7 .4 175 ----- ----- Basin Index (%) * 150 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * .6 -M * BUG LAKE 7950 .3 .0 * .7 .4 175 BURTS MILLER RANCH 8000 .3 -M * .3 -M * CHALK CREEK #1 8993 .8 .0 * 1.1 .5 220 HAYDEN FORK 9212 .3 .0 * .8 .4 200 KELLEY R.S. 8180 .1 .0 * .3 .3 100 LILY LAKE 9156 .1 .0 * .7 .4 175 MONTE CRISTO 8960 .2 .0 * .6 .4 150 SALT RIVER SUMMIT 7760 .0 .0 * .6 .3 200 ----- ----- Basin Index (%) * 178 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.