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 WEDNESDAY: OCTOBER 18 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .7 .1 700* 2.0 1.1 182 COTTONWOOD CREEK 7600 1.2 .1 1200* 1.8 1.2 150 GRANITE CREEK 6770 .6 .1 600* 2.0 1.3 154 GRASSY LAKE 7265 2.1 .2 1050* 3.0 1.8 167 GROS VENTRE SUMMIT 8775 1.2 .2 600* 1.2 .9 133 LEWIS LAKE DIVIDE 7860 1.8 .2 900* 3.3 1.9 174 PHILLIPS BENCH 8200 2.2 .2 1100* 2.4 1.4 171 SALT RIVER SUMMIT 7600 .2 .0 * 1.8 .9 200 SNAKE RIVER STATION 6920 .7 .1 700* 3.1 1.3 238 SPRING CREEK DIVIDE 9000 1.6 .2 800* 1.9 1.2 158 THUMB DIVIDE 7980 .6 .1 600* 2.0 1.0 200 TOGWOTEE PASS 9580 1.8 1.2 150* 1.8 1.4 129 TWO OCEAN PLATEAU 9360 2.4 1.7 141* 2.4 1.5 160 WILLOW CREEK 8450 1.5 .2 750* 2.5 1.5 167 ----- ----- Basin wide percent of average 400* 170 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 1.8 1.8 100* 1.8 1.0 180 BLACK BEAR 7950 3.1 1.5 207* 4.1 1.9 216 CANYON 7940 .8 .3 267* 1.7 1.0 170 FISHER CREEK 9100 2.1 1.2 175* 3.0 1.6 188 MADISON PLATEAU 7750 1.9 .7 271* 3.0 1.4 214 NORTHEAST ENTRANCE 7350 .0 .1 -0* 1.5 .8 188 PARKER PEAK 9400 1.1 2.1 52* 2.3 1.2 192 SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214 THUMB DIVIDE 7980 .6 .1 600* 2.0 1.0 200 TWO OCEAN PLATEAU 9360 2.4 1.7 141* 2.4 1.5 160 WHISKEY CREEK 6800 1.2 .3 400* 2.6 1.2 217 WHITE MILL 8700 1.4 1.0 140* 2.4 1.5 160 WOLVERINE 7650 .0 .1 0* 1.4 .9 156 ----- ----- Basin wide percent of average 148* 190 WIND RIVER BURROUGHS CREEK 8750 .4 .4 100* .7 .9 78 COLD SPRINGS 9630 .1 .4 25* .3 1.0 30 DEER PARK 9700 1.8 -M * 1.7 -M * HOBBS PARK 10100 .9 1.0 90* .6 1.1 55 LITTLE WARM 9620 .7 .5 140* .7 1.0 70 SOUTH PASS 9040 1.0 1.5 67* 1.1 1.2 92 ST. LAWRENCE ALT 8620 .1 .4 25* .2 .9 22 TOGWOTEE PASS 9580 1.8 1.2 150* 1.8 1.4 129 TOWNSEND CREEK 8700 .1 .4 25* .7 1.0 70 ----- ----- Basin wide percent of average 88* 72 BIGHORN BASIN BALD MTN. 9375 .8 1.6 50* 1.4 1.3 108 BEAR TRAP MEADOW 7900 .0 .3 0* .5 .9 56 BLACKWATER 9780 2.2 1.5 147* 2.1 1.3 162 BONE SPRINGS DIV 9350 .9 1.9 47 1.7 1.2 142 EVENING STAR 9200 1.3 2.1 62* 3.4 1.6 212 GRAVE SPRINGS 8550 .3 .6 50* .6 1.0 60 KIRWIN 9550 .7 .8 87* 1.3 .9 144 MARQUETTE 8760 .2 .6 33* 1.2 1.0 120 MIDDLE POWDER 7760 .2 .7 29* .6 1.2 50 OWL CREEK 8975 .1 .4 25* .4 .5 80 POWDER RIVER PASS 9480 .3 .6 50* 1.4 1.0 140 SHELL CREEK 9580 1.5 1.7 88* 1.4 1.0 140 SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214 SYLVAN ROAD 8120 .7 .8 87* 2.7 1.2 225 TIMBER CREEK 7950 .1 .1 100* .8 .7 114 YOUNTS PEAK 8350 1.3 1.2 108* 2.2 1.0 220 ----- ----- Basin wide percent of average 75* 144 SHOSHONE RIVER BLACKWATER 9780 2.2 1.5 147* 2.1 1.3 162 EVENING STAR 9200 1.3 2.1 62* 3.4 1.6 212 KIRWIN 9550 .7 .8 87* 1.3 .9 144 MARQUETTE 8760 .2 .6 33* 1.2 1.0 120 SYLVAN LAKE 8420 1.6 1.3 123* 3.0 1.4 214 SYLVAN ROAD 8120 .7 .8 87* 2.7 1.2 225 YOUNTS PEAK 8350 1.3 1.2 108* 2.2 1.0 220 ----- ----- Basin wide percent of average 96* 189 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .3 0* .5 .9 56 BIG GOOSE 7990 .4 -M * 1.0 -M * BONE SPRINGS DIV 9350 .9 1.9 47 1.7 1.2 142 BURGESS JUNCTION 7880 .7 .9 78* .9 1.1 82 CLOUD PEAK RESERVOIR 9860 .4 .7 57* 1.6 1.2 133 DOME LAKE 8880 .8 1.1 73* 1.4 1.3 108 GRAVE SPRINGS 8550 .3 .6 50* .6 1.0 60 HANSEN SAWMILL 8760 .3 .4 75* 1.1 .9 122 MIDDLE POWDER 7760 .2 .7 29* .6 1.2 50 POWDER RIVER PASS 9480 .3 .6 50* 1.4 1.0 140 SUCKER CREEK 8880 .1 .7 14* .8 1.2 67 TIE CREEK 6870 .1 -M * 1.1 1.0 110 ----- ----- Basin wide percent of average 51* 98 BELLE FOURCHE BLIND PARK 6890 .0 .9 0* .3 1.0 30 COLE CANYON 5910 .1 .9 11* .9 .8 112 NORTH RAPID CREEK 6130 .0 -M * .5 -M * ----- ----- Basin wide percent of average 6* 67 UPPER N. PLATTE RIVER COLUMBINE 9400 .0 .7 0* .3 1.4 21 DIVIDE PEAK 8800 .4 .9 44* 1.6 1.7 94 ELK RIVER 8700 .1 .1 100* .2 1.3 15 JOE WRIGHT 10120 .0 1.5 0* .1 1.9 5 NORTH FRENCH CREEK 10100 .6 .9 67* .4 1.3 31 OLD BATTLE 10000 .6 2.1 29* .8 1.8 44 SOUTH BRUSH CREEK 8400 .1 .2 50* .3 1.3 23 TOWER 10500 .3 2.8 11* .6 2.2 27 WEBBER SPRINGS 9200 .0 .7 0* .4 1.6 25 WILLOW CREEK PASS 9540 .0 .4 0* .2 1.0 20 ----- ----- Basin wide percent of average 20* 32 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .1 1.1 9* .2 1.3 15 CASPER MTN. 7900 .5 .6 83* .6 1.4 43 DEADMAN HILL 10220 1.0 .6 167* .0 1.3 0 DEER PARK 9700 1.8 -M * 1.7 -M * LAPRELE CREEK 8320 .3 .2 150* .4 .8 50 RENO HILL 8400 .0 .8 0* .3 1.4 21 ROACH 9700 .0 .6 -0* .1 1.5 7 SAND LAKE 10080 .3 1.3 23* .5 1.4 36 SOUTH PASS 9040 1.0 1.5 67* 1.1 1.2 92 WINDY PEAK 7840 .0 .0 100* .3 .7 43 ----- ----- Basin wide percent of average 48* 32 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .1 -0* .6 1.0 60 DIVIDE PEAK 8800 .4 .9 44* 1.6 1.7 94 OLD BATTLE 10000 .6 2.1 29* .8 1.8 44 SANDSTONE RS 8150 .1 .1 100* .8 .9 89 WHISKEY PARK 8950 .0 .9 0* .4 1.0 40 ----- ----- Basin wide percent of average 27* 66 UPPER GREEN RIVER BIG SANDY OPENING 9100 1.8 .1 1800* 1.9 .9 211 BLIND BULL SUM 8650 1.7 .4 425* 1.9 1.1 173 EAST RIM DIVIDE 7930 1.0 .1 1000* 1.3 .8 162 ELKHART PARK G.S. 9400 1.8 .2 900* 1.9 .9 211 GROS VENTRE SUMMIT 8775 1.2 .2 600* 1.2 .9 133 KENDALL R.S. 7740 .8 .0 * 1.4 .8 175 LOOMIS PARK 8240 1.5 .1 1500* 1.7 1.0 170 NEW FORK LAKE 8340 .9 .0 * 1.3 .8 162 SNIDER BASIN 8250 .7 .0 * 1.0 .8 125 SPRING CREEK DIVIDE 9000 1.6 .2 800* 1.9 1.2 158 TRIPLE PEAK 8500 1.2 .2 600* 2.0 1.5 133 ----- ----- Basin wide percent of average 787* 164 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 * 1.1 .7 157 HEWINTA 9500 -M .1 * 1.3 1.3 100 HICKERSON PARK 9150 .1 .0 * 1.2 1.2 100 HOLE-IN-ROCK 9150 .0 .0 100* 1.3 1.2 108 INDIAN CREEK 9425 1.8 .3 600* 1.8 1.3 138 KELLEY R.S. 8180 1.1 .1 1100* 1.5 1.0 150 STEEL CREEK PARK 10100 1.2 1.0 120* 1.3 1.3 100 ----- ----- Basin wide percent of average 293* 119 UPPER BEAR RIVER BUG LAKE 7950 .8 .7 114* 1.3 1.8 72 HAYDEN FORK 9400 .0 .4 0* 1.5 1.4 107 KELLEY R.S. 8180 1.1 .1 1100* 1.5 1.0 150 LILY LAKE 9050 .4 .5 80* 1.4 1.5 93 MONTE CRISTO 8960 .7 .8 87* 1.7 1.9 89 SALT RIVER SUMMIT 7600 .2 .0 * 1.8 .9 200 TRIAL LAKE 9960 .7 .9 78* 1.7 1.6 106 ----- ----- Basin wide percent of average 109* 108 ----------------------------------------------------------------------------- -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 1961-90. 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.