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 21 , 2004 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .7 .3 233* 1.2 1.4 86 COTTONWOOD CREEK 7600 .6 .4 150* 2.0 2.0 100 GRANITE CREEK 6770 1.0 .3 333* 2.1 1.2 175 GRASSY LAKE 7265 .8 .7 114* 1.4 2.3 61 GROS VENTRE SUMMIT 8750 1.5 .9 167* 1.4 1.2 117 LEWIS LAKE DIVIDE 7850 2.0 .5 400* 2.1 2.1 100 PHILLIPS BENCH 8200 2.0 .7 286* 2.3 1.6 144 SALT RIVER SUMMIT 7600 .9 .1 900* 2.0 1.3 154 SNAKE RIVER STATION 6920 .5 .2 250* 1.2 1.5 80 SPRING CREEK DIVIDE 9000 2.6 .8 325* 2.7 1.7 159 THUMB DIVIDE 7980 .7 .4 175* 1.1 1.4 79 TOGWOTEE PASS 9580 1.5 1.6 94* 1.5 1.9 79 TWO OCEAN PLATEAU 9240 1.6 1.9 84* 1.7 2.1 81 WILLOW CREEK 8450 1.3 .9 144* 2.3 2.5 92 ----- ----- Basin wide percent of average 182* 103 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .8 1.8 44* 1.1 1.4 79 BLACK BEAR 8170 2.3 1.5 153* 2.5 2.3 109 CANYON 8090 .4 .4 100* 1.1 1.2 92 FISHER CREEK 9100 1.3 1.6 81* 2.1 2.2 95 MADISON PLATEAU 7750 1.0 .9 111* 1.8 1.7 106 NORTHEAST ENTRANCE 7350 .1 .2 50* .6 1.0 60 PARKER PEAK 9400 1.0 1.7 59* 1.2 1.5 80 SYLVAN LAKE 8420 .9 1.3 69* 1.4 1.7 82 THUMB DIVIDE 7980 .7 .4 175* 1.1 1.4 79 TWO OCEAN PLATEAU 9240 1.6 1.9 84* 1.7 2.1 81 WHISKEY CREEK 6800 .7 .3 233* 1.4 1.5 93 WHITE MILL 8700 .8 1.2 67* 1.4 1.8 78 WOLVERINE 7650 .1 .2 50* .7 1.2 58 ----- ----- Basin wide percent of average 87* 86 WIND RIVER BURROUGHS CREEK 8750 .8 .5 160* .9 1.1 82 COLD SPRINGS 9630 1.2 .5 240* 1.5 1.3 115 DEER PARK 9700 2.0 1.5 133* -M 1.7 * HOBBS PARK 10100 1.7 1.3 131* 1.9 1.4 136 LITTLE WARM 9370 1.0 .6 167* 1.2 1.2 100 SOUTH PASS 9040 1.1 .8 138* 1.6 1.4 114 ST. LAWRENCE ALT 8620 .5 .4 125* 1.1 1.2 92 TOGWOTEE PASS 9580 1.5 1.6 94* 1.5 1.9 79 TOWNSEND CREEK 8700 .2 .6 33* 1.9 1.4 136 ----- ----- Basin wide percent of average 128* 106 BIGHORN BASIN BALD MTN. 9380 2.1 2.0 105* 2.2 1.6 138 BEAR TRAP MEADOW 8200 .3 .3 100* 1.5 1.2 125 BLACKWATER 9780 .8 2.1 38* 1.1 1.8 61 BONE SPRINGS DIV 9350 2.4 1.8 133* 2.6 1.7 153 EVENING STAR 9200 .7 1.8 39* 1.4 1.9 74 GRAVE SPRINGS 8550 .1 .6 17* .9 1.4 64 KIRWIN 9550 1.2 1.2 100* 1.3 1.2 108 MARQUETTE 8760 .2 1.3 15 .6 1.5 40 MIDDLE POWDER 7760 .1 .8 12* 1.2 1.7 71 OWL CREEK 8975 .1 .5 20* .3 .8 37 POWDER RIVER PASS 9480 2.0 .8 250* 2.3 1.3 177 SHELL CREEK 9580 2.3 2.0 115 2.1 1.4 150 SYLVAN LAKE 8420 .9 1.3 69* 1.4 1.7 82 SYLVAN ROAD 7120 .1 .2 50* 1.2 1.4 86 TIMBER CREEK 7950 .0 .5 0* .4 1.1 36 YOUNTS PEAK 8350 .8 .9 89* 1.4 1.2 117 ----- ----- Basin wide percent of average 78* 96 SHOSHONE RIVER BLACKWATER 9780 .8 2.1 38* 1.1 1.8 61 EVENING STAR 9200 .7 1.8 39* 1.4 1.9 74 KIRWIN 9550 1.2 1.2 100* 1.3 1.2 108 MARQUETTE 8760 .2 1.3 15 .6 1.5 40 SYLVAN LAKE 8420 .9 1.3 69* 1.4 1.7 82 SYLVAN ROAD 7120 .1 .2 50* 1.2 1.4 86 YOUNTS PEAK 8350 .8 .9 89* 1.4 1.2 117 ----- ----- Basin wide percent of average 53* 79 POWDER-TONGUE BEAR TRAP MEADOW 8200 .3 .3 100* 1.5 1.2 125 BIG GOOSE 7990 .3 .5 60* 1.4 1.4 100 BONE SPRINGS DIV 9350 2.4 1.8 133* 2.6 1.7 153 BURGESS JUNCTION 7880 .3 1.0 30* 1.6 1.5 107 CLOUD PEAK RESERVOIR 9860 1.4 .8 175* 2.0 1.7 118 DOME LAKE 8880 1.4 1.1 127* 1.9 1.7 112 GRAVE SPRINGS 8550 .1 .6 17* .9 1.4 64 HANSEN SAWMILL 8360 .2 .4 50* 1.2 1.2 100 MIDDLE POWDER 7760 .1 .8 12* 1.2 1.7 71 POWDER RIVER PASS 9480 2.0 .8 250* 2.3 1.3 177 SUCKER CREEK 8880 1.3 .8 162* 1.9 1.6 119 TIE CREEK 6870 .0 .3 0* 1.2 1.7 71 ----- ----- Basin wide percent of average 107* 109 BELLE FOURCHE BLIND PARK 6890 .0 .2 0* 1.1 1.7 65 COLE CANYON 5910 .0 .3 0* .8 -M * NORTH RAPID CREEK 6130 .0 .2 0* 1.2 1.7 71 ----- ----- Basin wide percent of average 0* 68 UPPER N. PLATTE RIVER COLUMBINE 9160 .5 .3 167* 1.4 1.6 87 DIVIDE PEAK 8860 .2 1.1 18* 1.9 1.8 106 ELK RIVER 8700 .2 .3 67* 1.6 1.5 107 JOE WRIGHT 10120 1.2 1.5 80* .8 2.3 35 NORTH FRENCH CREEK 10130 .6 2.1 29* 1.2 2.3 52 OLD BATTLE 9920 2.3 1.8 128* 2.9 2.4 121 SAGE CREEK BASIN 7850 .4 .5 80* 1.8 1.0 180 SOUTH BRUSH CREEK 8440 .1 .4 25* 1.0 1.7 59 TOWER 10500 3.3 2.0 165* 2.2 2.6 85 WEBBER SPRINGS 9250 1.4 1.0 140* 2.4 2.1 114 WILLOW CREEK PASS 9540 1.0 .6 167* 1.4 1.4 100 ----- ----- Basin wide percent of average 97* 90 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 .2 1.4 14* 1.1 1.7 65 CASPER MTN. 7850 .3 1.0 30* 1.3 1.7 76 DEADMAN HILL 10220 2.5 1.4 179* 1.6 1.7 94 DEER PARK 9700 2.0 1.5 133* -M 1.7 * LAPRELE CREEK 8375 .0 .6 0* 1.3 1.3 100 RENO HILL 8500 .1 1.1 9* 1.0 1.7 59 ROACH 9700 .7 .7 100* -M 1.5 * SAND LAKE 10050 2.6 2.0 130* 1.6 2.1 76 SOUTH PASS 9040 1.1 .8 138* 1.6 1.4 114 WINDY PEAK 7900 .0 .3 0* .9 1.2 75 ----- ----- Basin wide percent of average 88* 81 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .2 50* 1.0 1.3 77 DIVIDE PEAK 8860 .2 1.1 18* 1.9 1.8 106 OLD BATTLE 9920 2.3 1.8 128* 2.9 2.4 121 SANDSTONE RS 8150 .0 .3 0* 1.1 1.5 73 WHISKEY PARK 8950 .6 1.0 60* 1.2 1.9 63 ----- ----- Basin wide percent of average 73* 91 UPPER GREEN RIVER BIG SANDY OPENING 9080 -M .7 * 2.8 1.2 233 BLIND BULL SUM 8900 1.4 .9 156* 1.6 1.5 107 EAST RIM DIVIDE 7930 .4 .2 200* 1.0 .9 111 ELKHART PARK G.S. 9400 -M .4 * 2.7 1.3 208 GROS VENTRE SUMMIT 8750 1.5 .9 167* 1.4 1.2 117 KENDALL R.S. 7740 .7 .2 350* 1.5 1.0 150 LOOMIS PARK 8240 1.3 .5 260* 1.7 1.2 142 NEW FORK LAKE 8340 .8 .2 400* 1.0 1.0 100 SNIDER BASIN 8060 1.7 .3 567* 2.2 1.1 200 SPRING CREEK DIVIDE 9000 2.6 .8 325* 2.7 1.7 159 TRIPLE PEAK 8500 1.0 .6 167* 1.4 1.5 93 ----- ----- Basin wide percent of average 248* 147 LOWER GREEN RIVER HAMS FORK 7840 1.4 .2 700* 2.4 1.0 240 HEWINTA 9500 .1 .6 17* .9 1.6 56 HICKERSON PARK 9100 .3 .2 150* 1.1 1.2 92 HOLE-IN-ROCK 9150 .2 .2 100* 1.0 1.1 91 INDIAN CREEK 9425 3.4 .8 425* 3.4 1.7 200 KELLEY R.S. 8180 2.8 .5 560* 3.0 1.4 214 STEEL CREEK PARK 10100 1.1 1.1 100* 1.4 1.5 93 ----- ----- Basin wide percent of average 258* 139 UPPER BEAR RIVER BUG LAKE 7950 1.4 .8 175* 2.6 1.5 173 HAYDEN FORK 9100 1.6 .6 267* 3.3 1.6 206 KELLEY R.S. 8180 2.8 .5 560* 3.0 1.4 214 LILY LAKE 9050 .6 .6 100* 2.4 1.6 150 MONTE CRISTO 8960 3.6 1.1 327* 3.6 1.9 189 SALT RIVER SUMMIT 7600 .9 .1 900* 2.0 1.3 154 TRIAL LAKE 9960 3.1 1.2 258* 3.8 1.9 200 ----- ----- Basin wide percent of average 286* 185 ----------------------------------------------------------------------------- -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.