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 FRIDAY: OCTOBER 17 , 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 .1 0 1.6 1.0 160 COTTONWOOD CREEK 7670 .0 .2 0 1.4 1.4 100 GRAND TARGHEE 9260 1.0 -M * 3.1 -M * GRANITE CREEK 6770 .4 .1 400 1.6 .8 200 GRASSY LAKE 7265 .7 .4 175 2.0 1.6 125 GROS VENTRE SUMMIT 8750 1.3 .7 186 1.8 1.0 180 GUNSIGHT PASS 9820 .7 -M * 1.1 -M * LEWIS LAKE DIVIDE 7850 .5 .2 250 2.1 1.4 150 PHILLIPS BENCH 8200 .9 .3 300 1.6 1.1 145 SALT RIVER SUMMIT 7760 .0 .0 100 1.1 .9 122 SNAKE RIVER STATION 6920 .0 .0 100 1.3 1.1 118 SPRING CREEK DIVIDE 9000 .8 .4 200 1.2 1.1 109 THUMB DIVIDE 7980 .6 .2 300 2.2 1.1 200 TOGWOTEE PASS 9580 1.4 1.2 117 1.9 1.4 136 TWO OCEAN PLATEAU 9240 1.2 1.4 86 1.5 1.5 100 WILLOW CREEK 8380 .4 .6 67 2.0 1.8 111 ----- ----- Basin wide percent of average 141 135 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 1.3 1.5 87 1.3 1.0 130 BLACK BEAR 8170 1.1 .9 122 3.2 1.5 213 CANYON 7870 .0 .3 0 .7 .8 87 FISHER CREEK 9100 1.1 1.1 100 1.9 1.5 127 MADISON PLATEAU 7750 .8 .5 160 1.8 1.3 138 NORTHEAST ENTRANCE 7350 .0 .1 0 1.0 .8 125 PARKER PEAK 9400 1.5 1.5 100 1.5 1.3 115 SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123 THUMB DIVIDE 7980 .6 .2 300 2.2 1.1 200 TWO OCEAN PLATEAU 9240 1.2 1.4 86 1.5 1.5 100 WHISKEY CREEK 6800 .5 .1 500 1.3 1.0 130 WHITE MILL 8700 1.1 .8 138 1.4 1.3 108 WOLVERINE 7650 .6 .2 300 1.1 1.0 110 ----- ----- Basin wide percent of average 102 133 WIND RIVER BURROUGHS CREEK 8750 1.7 .3 567 2.0 .8 250 COLD SPRINGS 9630 1.7 .4 425 2.2 .9 244 DEER PARK 9700 1.3 1.1 118 2.4 1.1 218 HOBBS PARK 10100 2.1 1.1 191 2.4 1.1 218 LITTLE WARM 9370 1.3 .5 260 1.7 .9 189 SOUTH PASS 9040 1.5 .6 250 2.9 1.0 290 ST. LAWRENCE ALT 8620 1.8 .3 600 2.2 .9 244 TOGWOTEE PASS 9580 1.4 1.2 117 1.9 1.4 136 TOWNSEND CREEK 8700 1.9 .5 380 2.7 1.1 245 ----- ----- Basin wide percent of average 245 222 BIGHORN BASIN BALD MTN. 9380 1.8 1.7 106 2.4 1.3 185 BEAR TRAP MEADOW 8200 .8 .3 267 1.7 .9 189 BLACKWATER 9780 1.4 1.8 78 1.7 1.4 121 BONE SPRINGS DIV 9350 1.5 1.5 100 1.8 1.4 129 EVENING STAR 9200 1.4 1.4 100 2.1 1.4 150 GRAVE SPRINGS 8550 1.1 .4 275 1.7 1.2 142 KIRWIN 9550 1.4 1.0 140 1.5 .9 167 MARQUETTE 8760 1.7 1.2 142 1.9 1.2 158 MIDDLE POWDER 7760 1.1 .8 138 1.8 1.4 129 OWL CREEK 8975 1.8 .5 360 1.7 .6 283 POWDER RIVER PASS 9480 .9 .6 150 1.7 1.1 155 SHELL CREEK 9580 2.0 1.7 118 2.4 1.1 218 SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123 SYLVAN ROAD 7120 .0 .2 0 1.1 .9 122 TIMBER CREEK 7950 1.4 .6 233 2.1 .8 262 YOUNTS PEAK 8350 1.0 .6 167 1.3 1.0 130 ----- ----- Basin wide percent of average 126 159 SHOSHONE RIVER BLACKWATER 9780 1.4 1.8 78 1.7 1.4 121 EVENING STAR 9200 1.4 1.4 100 2.1 1.4 150 KIRWIN 9550 1.4 1.0 140 1.5 .9 167 MARQUETTE 8760 1.7 1.2 142 1.9 1.2 158 SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123 SYLVAN ROAD 7120 .0 .2 0 1.1 .9 122 YOUNTS PEAK 8350 1.0 .6 167 1.3 1.0 130 ----- ----- Basin wide percent of average 96 138 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .3 267 1.7 .9 189 BIG GOOSE 7990 .8 .4 200 1.7 1.2 142 BONE SPRINGS DIV 9350 1.5 1.5 100 1.8 1.4 129 BURGESS JUNCTION 7880 1.0 .8 125 1.8 1.2 150 CLOUD PEAK RESERVOIR 9860 1.4 .7 200 1.8 1.4 129 DOME LAKE 8880 .9 1.0 90 1.5 1.4 107 GRAVE SPRINGS 8550 1.1 .4 275 1.7 1.2 142 HANSEN SAWMILL 8360 1.0 .4 250 1.3 1.0 130 MIDDLE POWDER 7760 1.1 .8 138 1.8 1.4 129 POWDER RIVER PASS 9480 .9 .6 150 1.7 1.1 155 SUCKER CREEK 8880 1.2 .7 171 2.1 1.3 162 TIE CREEK 6870 1.6 .3 533 2.9 1.5 193 ----- ----- Basin wide percent of average 168 145 BELLE FOURCHE BLIND PARK 6890 .0 .1 0 1.1 1.3 85 COLE CANYON 5910 1.1 .4 275 2.5 1.0 250 NORTH RAPID CREEK 6130 .0 .2 0 1.6 1.4 114 ----- ----- Basin wide percent of average 157 141 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .1 100 .3 1.1 27 DIVIDE PEAK 8880 .3 .8 37 1.9 1.4 136 ELK RIVER 8700 .2 .2 100 1.1 1.1 100 JOE WRIGHT 10120 .0 1.0 0 .9 1.7 53 NORTH FRENCH CREEK 10130 .7 1.5 47 1.2 1.5 80 OLD BATTLE 10000 .2 1.3 15 1.4 1.7 82 SAGE CREEK BASIN 7850 .0 .4 0 .8 .8 100 SOUTH BRUSH CREEK 8440 .0 .2 0 .8 1.3 62 TOWER 10500 .0 1.2 0 1.5 1.7 88 WEBBER SPRINGS 9250 .1 .6 17 .9 1.5 60 WILLOW CREEK PASS 9540 .2 .4 50 .6 1.0 60 ----- ----- Basin wide percent of average 23 77 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .4 1.0 40 .5 1.2 42 CASPER MTN. 7900 .5 .7 71 1.6 1.2 133 DEADMAN HILL 10220 1.4 1.1 127 .6 1.3 46 DEER PARK 9700 1.3 1.1 118 2.4 1.1 218 LAPRELE CREEK 8375 .1 .3 33 .5 .9 56 RENO HILL 8400 1.0 .8 125 1.2 1.2 100 ROACH 9700 .6 .3 200 .7 1.2 58 SAND LAKE 10050 .9 1.5 60 .8 1.5 53 SOUTH PASS 9040 1.5 .6 250 2.9 1.0 290 WINDY PEAK 7900 .6 .1 600 .5 .9 56 ----- ----- Basin wide percent of average 111 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 .6 .9 67 DIVIDE PEAK 8880 .3 .8 37 1.9 1.4 136 OLD BATTLE 10000 .2 1.3 15 1.4 1.7 82 SANDSTONE RS 8150 .0 .1 0 .6 1.1 55 WHISKEY PARK 8950 .1 .6 17 1.0 1.5 67 ----- ----- Basin wide percent of average 21 83 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .5 160 1.3 .9 144 BLIND BULL SUM 8650 1.5 .5 300 2.0 1.0 200 EAST RIM DIVIDE 7930 .7 .1 700 1.8 .7 257 ELKHART PARK G.S. 9400 .9 .3 300 1.7 1.0 170 GROS VENTRE SUMMIT 8750 1.3 .7 186 1.8 1.0 180 GUNSIGHT PASS 9820 .7 -M * 1.1 -M * KENDALL R.S. 7740 .6 .0 1.4 .8 175 LOOMIS PARK 8240 1.0 .3 333 2.0 .9 222 NEW FORK LAKE 8340 .5 .1 500 1.3 .8 162 SNIDER BASIN 8060 .8 .2 400 1.1 .7 157 SPRING CREEK DIVIDE 9000 .8 .4 200 1.2 1.1 109 TRIPLE PEAK 8500 1.2 .3 400 1.8 1.1 164 ----- ----- Basin wide percent of average 279 174 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100 1.2 .7 171 HEWINTA 9519 .0 .4 0 1.2 1.2 100 HICKERSON PARK 9145 .0 .1 0 1.2 .9 133 HOLE-IN-ROCK 9150 .5 .1 500 1.7 .9 189 INDIAN CREEK 9425 1.5 .5 300 1.7 1.2 142 KELLEY R.S. 8180 .6 .3 200 1.4 1.0 140 STEEL CREEK PARK 10200 .7 .8 87 1.6 1.2 133 ----- ----- Basin wide percent of average 150 141 UPPER BEAR RIVER BUG LAKE 7950 .3 .6 50 1.3 1.2 108 HAYDEN FORK 9212 .0 .4 0 1.3 1.2 108 KELLEY R.S. 8180 .6 .3 200 1.4 1.0 140 LILY LAKE 9156 .0 .5 0 1.7 1.2 142 MONTE CRISTO 8960 .0 .8 0 1.7 1.4 121 SALT RIVER SUMMIT 7760 .0 .0 100 1.1 .9 122 TRIAL LAKE 9992 .2 .9 22 1.3 1.4 93 ----- ----- Basin wide percent of average 31 118 ----------------------------------------------------------------------------- -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.