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 22 , 2008 ----------------------------------------------------------------------------- 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 1.8 1.3 138 COTTONWOOD CREEK 7670 .0 .4 0 1.5 1.9 79 GRAND TARGHEE 9260 1.1 -M * 3.1 -M * GRANITE CREEK 6770 .1 .2 50 1.7 1.1 155 GRASSY LAKE 7265 .1 .7 14 2.0 2.1 95 GROS VENTRE SUMMIT 8750 1.6 .9 178 2.1 1.3 162 GUNSIGHT PASS 9820 .4 -M * 1.3 -M * LEWIS LAKE DIVIDE 7850 .1 .4 25 2.0 1.9 105 PHILLIPS BENCH 8200 .6 .7 86 1.6 1.5 107 SALT RIVER SUMMIT 7760 .0 .1 0 1.0 1.3 77 SNAKE RIVER STATION 6920 .0 .2 0 1.5 1.5 100 SPRING CREEK DIVIDE 9000 .4 .8 50 1.2 1.5 80 THUMB DIVIDE 7980 .0 .4 0 2.2 1.4 157 TOGWOTEE PASS 9580 2.1 1.6 131 2.7 1.8 150 TWO OCEAN PLATEAU 9240 2.3 1.9 121 1.7 2.0 85 WILLOW CREEK 8380 .4 .9 44 2.1 2.5 84 ----- ----- Basin wide percent of average 82 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.5 1.8 83 1.4 1.4 100 BLACK BEAR 8170 1.1 1.2 92 3.3 2.1 157 CANYON 7870 .0 .3 0 .7 1.1 64 FISHER CREEK 9100 1.5 1.5 100 2.6 2.1 124 MADISON PLATEAU 7750 .5 .7 71 1.8 1.7 106 NORTHEAST ENTRANCE 7350 .1 .1 100 1.1 1.0 110 PARKER PEAK 9400 1.5 1.9 79 1.6 1.6 100 SYLVAN LAKE 8420 .1 1.1 9 1.7 1.7 100 THUMB DIVIDE 7980 .0 .4 0 2.2 1.4 157 TWO OCEAN PLATEAU 9240 2.3 1.9 121 1.7 2.0 85 WHISKEY CREEK 6800 .0 .2 0 1.3 1.4 93 WHITE MILL 8700 1.4 1.1 127 1.5 1.8 83 WOLVERINE 7650 .2 .2 100 1.1 1.3 85 ----- ----- Basin wide percent of average 82 107 WIND RIVER BURROUGHS CREEK 8750 1.8 .5 360 2.2 1.1 200 COLD SPRINGS 9630 1.4 .6 233 2.3 1.2 192 DEER PARK 9700 1.3 1.1 118 2.7 1.7 159 HOBBS PARK 10100 2.0 1.5 133 2.6 1.5 173 LITTLE WARM 9370 1.5 .7 214 2.0 1.2 167 SOUTH PASS 9040 1.5 .8 188 3.3 1.3 254 ST. LAWRENCE ALT 8620 1.1 .5 220 2.3 1.2 192 TOGWOTEE PASS 9580 2.1 1.6 131 2.7 1.8 150 TOWNSEND CREEK 8700 1.8 .6 300 2.8 1.5 187 ----- ----- Basin wide percent of average 184 183 BIGHORN BASIN BALD MTN. 9380 2.4 2.0 120 2.6 1.7 153 BEAR TRAP MEADOW 8200 .5 .4 125 1.7 1.2 142 BLACKWATER 9780 1.7 2.2 77 1.9 1.8 106 BONE SPRINGS DIV 9350 2.1 1.9 111 2.2 1.8 122 EVENING STAR 9200 1.8 1.6 112 2.3 1.8 128 GRAVE SPRINGS 8550 .9 .7 129 1.8 1.5 120 KIRWIN 9550 1.5 1.3 115 1.8 1.2 150 MARQUETTE 8760 1.3 1.4 93 2.0 1.6 125 MIDDLE POWDER 7760 .6 1.0 60 2.0 1.8 111 OWL CREEK 8975 1.9 .6 317 1.8 .8 225 POWDER RIVER PASS 9480 1.3 .8 162 2.1 1.4 150 SHELL CREEK 9580 2.3 2.0 115 2.8 1.4 200 SYLVAN LAKE 8420 .1 1.1 9 1.7 1.7 100 SYLVAN ROAD 7120 .3 .2 150 1.3 1.2 108 TIMBER CREEK 7950 1.1 .6 183 2.3 1.1 209 YOUNTS PEAK 8350 1.1 .9 122 1.5 1.3 115 ----- ----- Basin wide percent of average 112 136 SHOSHONE RIVER BLACKWATER 9780 1.7 2.2 77 1.9 1.8 106 EVENING STAR 9200 1.8 1.6 112 2.3 1.8 128 KIRWIN 9550 1.5 1.3 115 1.8 1.2 150 MARQUETTE 8760 1.3 1.4 93 2.0 1.6 125 SYLVAN LAKE 8420 .1 1.1 9 1.7 1.7 100 SYLVAN ROAD 7120 .3 .2 150 1.3 1.2 108 YOUNTS PEAK 8350 1.1 .9 122 1.5 1.3 115 ----- ----- Basin wide percent of average 90 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 .5 .4 125 1.7 1.2 142 BIG GOOSE 7990 .7 .5 140 1.9 1.6 119 BONE SPRINGS DIV 9350 2.1 1.9 111 2.2 1.8 122 BURGESS JUNCTION 7880 1.4 1.0 140 2.4 1.6 150 CLOUD PEAK RESERVOIR 9860 1.9 1.0 190 2.0 1.9 105 DOME LAKE 8880 1.3 1.2 108 2.1 1.8 117 GRAVE SPRINGS 8550 .9 .7 129 1.8 1.5 120 HANSEN SAWMILL 8360 .5 .4 125 1.4 1.3 108 MIDDLE POWDER 7760 .6 1.0 60 2.0 1.8 111 POWDER RIVER PASS 9480 1.3 .8 162 2.1 1.4 150 SUCKER CREEK 8880 1.5 .8 188 2.4 1.7 141 TIE CREEK 6870 .4 .3 133 3.2 1.9 168 ----- ----- Basin wide percent of average 131 129 BELLE FOURCHE BLIND PARK 6890 .0 .1 0 1.3 1.8 72 COLE CANYON 5910 .0 .6 0 2.7 1.3 208 NORTH RAPID CREEK 6130 .0 .3 0 1.8 1.8 100 ----- ----- Basin wide percent of average 0 118 UPPER N. PLATTE RIVER COLUMBINE 9160 .2 .2 100 .7 1.5 47 DIVIDE PEAK 8880 .4 1.1 36 2.2 1.9 116 ELK RIVER 8700 .4 .3 133 1.4 1.5 93 JOE WRIGHT 10120 .6 1.5 40 1.9 2.3 83 NORTH FRENCH CREEK 10130 1.0 2.1 48 1.6 2.2 73 OLD BATTLE 10000 .8 1.8 44 2.0 2.3 87 SAGE CREEK BASIN 7850 .0 .6 0 .9 1.1 82 SOUTH BRUSH CREEK 8440 .2 .3 67 .9 1.8 50 TOWER 10500 .8 1.8 44 1.9 2.5 76 WEBBER SPRINGS 9250 .9 1.0 90 1.9 2.0 95 WILLOW CREEK PASS 9540 .2 .6 33 1.1 1.4 79 ----- ----- Basin wide percent of average 49 80 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .1 1.4 7 1.5 1.6 94 CASPER MTN. 7900 .8 1.1 73 2.2 1.7 129 DEADMAN HILL 10220 2.0 1.4 143 1.3 1.7 76 DEER PARK 9700 1.3 1.1 118 2.7 1.7 159 LAPRELE CREEK 8375 .0 .5 0 .6 1.3 46 RENO HILL 8400 .8 1.1 73 1.5 1.7 88 ROACH 9700 .8 .6 133 1.4 1.6 87 SAND LAKE 10050 1.8 2.0 90 1.5 2.0 75 SOUTH PASS 9040 1.5 .8 188 3.3 1.3 254 WINDY PEAK 7900 .6 .2 300 .5 1.2 42 ----- ----- Basin wide percent of average 95 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .2 50 .6 1.3 46 DIVIDE PEAK 8880 .4 1.1 36 2.2 1.9 116 OLD BATTLE 10000 .8 1.8 44 2.0 2.3 87 SANDSTONE RS 8150 .0 .2 0 .9 1.6 56 WHISKEY PARK 8950 .7 .9 78 1.7 2.0 85 ----- ----- Basin wide percent of average 48 81 UPPER GREEN RIVER BIG SANDY OPENING 9080 .7 .7 100 1.2 1.2 100 BLIND BULL SUM 8650 1.4 .8 175 2.1 1.4 150 EAST RIM DIVIDE 7930 .0 .2 0 1.8 .9 200 ELKHART PARK G.S. 9400 .7 .5 140 1.7 1.3 131 GROS VENTRE SUMMIT 8750 1.6 .9 178 2.1 1.3 162 GUNSIGHT PASS 9820 .4 -M * 1.3 -M * KENDALL R.S. 7740 .0 .3 0 1.5 1.0 150 LOOMIS PARK 8240 .6 .5 120 2.2 1.2 183 NEW FORK LAKE 8340 .2 .2 100 1.2 1.0 120 SNIDER BASIN 8060 .3 .3 100 1.0 1.0 100 SPRING CREEK DIVIDE 9000 .4 .8 50 1.2 1.5 80 TRIPLE PEAK 8500 1.0 .5 200 1.9 1.4 136 ----- ----- Basin wide percent of average 121 136 LOWER GREEN RIVER HAMS FORK 7840 .0 .1 0 1.2 .9 133 HEWINTA 9519 -M .6 * 1.2 1.6 75 HICKERSON PARK 9145 .0 .2 0 1.2 1.2 100 HOLE-IN-ROCK 9150 .0 .2 0 1.7 1.2 142 INDIAN CREEK 9425 1.0 .8 125 1.5 1.6 94 KELLEY R.S. 8180 .0 .5 0 1.3 1.4 93 STEEL CREEK PARK 10200 -M 1.1 * 1.7 1.6 106 ----- ----- Basin wide percent of average 56 103 UPPER BEAR RIVER BUG LAKE 7950 -M .8 * 1.3 1.6 81 HAYDEN FORK 9212 .0 .5 0 1.3 1.6 81 KELLEY R.S. 8180 .0 .5 0 1.3 1.4 93 LILY LAKE 9156 .0 .6 0 1.8 1.6 112 MONTE CRISTO 8960 .0 1.0 0 1.6 1.9 84 SALT RIVER SUMMIT 7760 .0 .1 0 1.0 1.3 77 TRIAL LAKE 9992 .1 1.2 8 1.4 1.8 78 ----- ----- Basin wide percent of average 3 87 ----------------------------------------------------------------------------- -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.