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 SUNDAY: OCTOBER 21 , 2001 ----------------------------------------------------------------------------- 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* 1.6 1.3 123 COTTONWOOD CREEK 7600 .4 .2 200* 1.3 1.4 93 GRANITE CREEK 6770 .1 .2 50* 1.5 1.5 100 GRASSY LAKE 7265 1.4 .4 350* 2.2 2.1 105 GROS VENTRE SUMMIT 8775 1.0 .4 250* .6 1.0 60 LEWIS LAKE DIVIDE 7860 1.3 .5 260* 1.9 2.2 86 PHILLIPS BENCH 8200 1.6 .4 400* 1.7 1.7 100 SALT RIVER SUMMIT 7600 .0 .0 100* .8 1.1 73 SNAKE RIVER STATION 6920 .3 .2 150* 1.5 1.5 100 SPRING CREEK DIVIDE 9000 1.6 .5 320* 1.8 1.4 129 THUMB DIVIDE 7980 .7 .2 350* 1.0 1.2 83 TOGWOTEE PASS 9580 2.1 1.5 140* 2.3 1.6 144 TWO OCEAN PLATEAU 9360 1.9 2.1 90* 1.6 1.8 89 WILLOW CREEK 8450 .1 .4 25* 1.3 1.8 72 ----- ----- Basin wide percent of average 174* 98 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 2.1 2.0 105* 2.0 1.2 167 BLACK BEAR 7950 2.6 1.7 153* 3.2 2.3 139 CANYON 7940 .8 .4 200* 1.1 1.2 92 FISHER CREEK 9100 2.3 1.5 153* 2.6 1.9 137 MADISON PLATEAU 7750 1.3 .9 144* 2.1 1.6 131 NORTHEAST ENTRANCE 7350 .0 .1 0* 1.0 1.0 100 PARKER PEAK 9400 1.2 2.4 50 1.0 1.4 71 SYLVAN LAKE 8420 1.8 1.6 112* 2.2 1.7 129 THUMB DIVIDE 7980 .7 .2 350* 1.0 1.2 83 TWO OCEAN PLATEAU 9360 1.9 2.1 90* 1.6 1.8 89 WHISKEY CREEK 6800 1.1 .4 275* 1.4 1.4 100 WHITE MILL 8700 2.0 1.2 167* 1.9 1.7 112 WOLVERINE 7650 .0 .2 0* 1.3 1.0 130 ----- ----- Basin wide percent of average 121* 115 WIND RIVER BURROUGHS CREEK 8750 1.1 .5 220* 1.3 1.0 130 COLD SPRINGS 9630 .1 .5 20* .5 1.2 42 DEER PARK 9700 .9 -M * 1.1 -M * HOBBS PARK 10100 .8 1.3 62* .8 1.3 62 LITTLE WARM 9620 1.1 .6 183* 1.2 1.2 100 SOUTH PASS 9040 .2 1.8 11* 1.1 1.4 79 ST. LAWRENCE ALT 8620 .2 .5 40* .4 1.1 36 TOGWOTEE PASS 9580 2.1 1.5 140* 2.3 1.6 144 TOWNSEND CREEK 8700 .1 .5 20* .4 1.2 33 ----- ----- Basin wide percent of average 79* 80 BIGHORN BASIN BALD MTN. 9375 2.9 1.8 161* 2.7 1.5 180 BEAR TRAP MEADOW 7900 1.0 .4 250* 1.8 1.0 180 BLACKWATER 9780 1.2 1.7 71* 1.2 1.5 80 BONE SPRINGS DIV 9350 2.5 2.1 119 2.8 1.4 200 EVENING STAR 9200 1.8 2.4 75* 2.7 1.9 142 GRAVE SPRINGS 8550 1.1 .7 157* 2.2 1.2 183 KIRWIN 9550 1.1 1.0 110* 1.1 1.0 110 MARQUETTE 8760 .6 .7 86* .8 1.2 67 MIDDLE POWDER 7760 1.3 .8 162* 2.0 1.4 143 OWL CREEK 8975 .0 .4 0* .3 .6 50 POWDER RIVER PASS 9480 1.1 .7 157* 2.1 1.2 175 SHELL CREEK 9580 2.6 1.9 137 2.5 1.2 208 SYLVAN LAKE 8420 1.8 1.6 112* 2.2 1.7 129 SYLVAN ROAD 8120 .6 1.0 60* 1.9 1.4 136 TIMBER CREEK 7950 .2 .2 100* .9 .8 112 YOUNTS PEAK 8350 1.3 1.5 87* 1.3 1.2 108 ----- ----- Basin wide percent of average 112* 141 SHOSHONE RIVER BLACKWATER 9780 1.2 1.7 71* 1.2 1.5 80 EVENING STAR 9200 1.8 2.4 75* 2.7 1.9 142 KIRWIN 9550 1.1 1.0 110* 1.1 1.0 110 MARQUETTE 8760 .6 .7 86* .8 1.2 67 SYLVAN LAKE 8420 1.8 1.6 112* 2.2 1.7 129 SYLVAN ROAD 8120 .6 1.0 60* 1.9 1.4 136 YOUNTS PEAK 8350 1.3 1.5 87* 1.3 1.2 108 ----- ----- Basin wide percent of average 85* 113 POWDER-TONGUE BEAR TRAP MEADOW 7900 1.0 .4 250* 1.8 1.0 180 BIG GOOSE 7990 1.2 -M * 2.8 -M * BONE SPRINGS DIV 9350 2.5 2.1 119 2.8 1.4 200 BURGESS JUNCTION 7880 1.4 1.0 140* 2.6 1.3 200 CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.1 1.4 221 DOME LAKE 8880 1.8 1.3 138* 3.0 1.5 200 GRAVE SPRINGS 8550 1.1 .7 157* 2.2 1.2 183 HANSEN SAWMILL 8760 .2 .5 40* 1.6 1.0 160 MIDDLE POWDER 7760 1.3 .8 162* 2.0 1.4 143 POWDER RIVER PASS 9480 1.1 .7 157* 2.1 1.2 175 SUCKER CREEK 8880 2.2 .8 275* 3.5 1.4 250 TIE CREEK 6870 .1 -M * 2.6 1.2 217 ----- ----- Basin wide percent of average 155* 195 BELLE FOURCHE BLIND PARK 6890 .2 1.1 18* 2.3 1.2 192 COLE CANYON 5910 .0 .3 0* 1.0 .9 111 NORTH RAPID CREEK 6130 .4 -M * 2.1 -M * ----- ----- Basin wide percent of average 14* 157 UPPER N. PLATTE RIVER COLUMBINE 9400 .2 .9 22* 1.7 1.6 106 DIVIDE PEAK 8800 1.0 1.1 91* 1.5 2.0 75 ELK RIVER 8700 .1 .1 100* 1.3 1.5 87 JOE WRIGHT 10120 .9 1.8 50* 1.6 2.3 70 NORTH FRENCH CREEK 10100 2.6 1.2 217* 2.6 1.5 173 OLD BATTLE 10000 1.0 2.4 42* 2.2 2.1 105 SOUTH BRUSH CREEK 8400 .1 .2 50* 1.5 1.5 100 TOWER 10500 1.9 3.5 54* 2.2 2.6 85 WEBBER SPRINGS 9200 .4 1.0 40* 1.5 1.9 79 WILLOW CREEK PASS 9540 .0 .5 0* .6 1.2 50 ----- ----- Basin wide percent of average 65* 92 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 1.6 1.3 123* 2.2 1.5 147 CASPER MTN. 7900 2.2 .7 314* 3.0 1.6 188 DEADMAN HILL 10220 .5 .8 62* 1.1 1.5 73 DEER PARK 9700 .9 -M * 1.1 -M * LAPRELE CREEK 8320 -M .4 * 2.8 1.0 280 RENO HILL 8400 2.2 1.0 220* 2.9 1.6 181 ROACH 9700 .2 .8 25* .9 1.7 53 SAND LAKE 10080 2.8 1.7 165* 2.9 1.7 171 SOUTH PASS 9040 .2 1.8 11* 1.1 1.4 79 WINDY PEAK 7840 .2 .1 200* 2.4 .8 300 ----- ----- Basin wide percent of average 121* 151 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .1 100* 1.1 1.2 92 DIVIDE PEAK 8800 1.0 1.1 91* 1.5 2.0 75 OLD BATTLE 10000 1.0 2.4 42* 2.2 2.1 105 SANDSTONE RS 8150 .0 .3 0* 1.8 1.1 164 WHISKEY PARK 8950 .8 1.2 67* 2.0 1.2 167 ----- ----- Basin wide percent of average 57* 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 .9 .2 450* .5 1.0 50 BLIND BULL SUM 8650 1.8 .8 225* 1.6 1.3 123 EAST RIM DIVIDE 7930 .5 .1 500* .6 1.0 60 ELKHART PARK G.S. 9400 .7 .4 175* .6 1.0 60 GROS VENTRE SUMMIT 8775 1.0 .4 250* .6 1.0 60 KENDALL R.S. 7740 .0 .0 100* .7 1.0 70 LOOMIS PARK 8240 1.1 .2 550* 1.2 1.2 100 NEW FORK LAKE 8340 .5 .0 * .7 .9 78 SNIDER BASIN 8250 .8 .0 * 1.4 1.0 140 SPRING CREEK DIVIDE 9000 1.6 .5 320* 1.8 1.4 129 TRIPLE PEAK 8500 1.3 .4 325* 2.1 1.8 117 ----- ----- Basin wide percent of average 297* 94 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 * .2 .8 25 HEWINTA 9500 .0 .1 0* 1.3 1.5 87 HICKERSON PARK 9150 .1 .1 100* .6 1.4 43 HOLE-IN-ROCK 9150 .0 .0 100* 1.1 1.4 79 INDIAN CREEK 9425 .8 .6 133* .7 1.5 47 KELLEY R.S. 8180 .2 .2 100* .4 1.2 33 STEEL CREEK PARK 10100 .7 1.2 58* .8 1.5 53 ----- ----- Basin wide percent of average 82* 55 UPPER BEAR RIVER BUG LAKE 7950 .0 .8 0* .4 2.1 19 HAYDEN FORK 9400 .0 .5 0* 1.1 1.6 69 KELLEY R.S. 8180 .2 .2 100* .4 1.2 33 LILY LAKE 9050 .0 .6 0* 1.1 1.7 65 MONTE CRISTO 8960 .0 .9 0* .6 2.3 26 SALT RIVER SUMMIT 7600 .0 .0 100* .8 1.1 73 TRIAL LAKE 9960 .0 1.1 0* 1.3 1.9 68 ----- ----- Basin wide percent of average 5* 48 ----------------------------------------------------------------------------- -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.