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 TUESDAY: OCTOBER 30 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .9 .6 150* 5.0 2.0 250 COTTONWOOD CREEK 7600 1.8 .9 200* 5.0 2.9 172 GRANITE CREEK 6770 1.0 .5 200* 4.1 1.7 241 GRASSY LAKE 7265 1.2 1.4 86* 5.9 3.3 179 GROS VENTRE SUMMIT 8750 2.1 1.3 162* 4.0 1.8 222 LEWIS LAKE DIVIDE 7850 1.3 1.2 108* 5.7 3.1 184 PHILLIPS BENCH 8200 1.5 1.3 115* 5.0 2.3 217 SALT RIVER SUMMIT 7600 .1 .4 25* 2.6 1.9 137 SNAKE RIVER STATION 6920 .1 .5 20* 4.6 2.2 209 SPRING CREEK DIVIDE 9000 1.9 1.4 136* 3.4 2.5 136 THUMB DIVIDE 7980 .6 .8 75* 4.4 2.0 220 TOGWOTEE PASS 9580 4.6 2.5 184* 5.8 2.7 215 TWO OCEAN PLATEAU 9240 5.7 3.0 190* 6.1 3.0 203 WILLOW CREEK 8450 2.1 1.7 124* 6.4 3.6 178 ----- ----- Basin wide percent of average 142* 194 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.5 2.5 180* 4.4 2.1 210 BLACK BEAR 8170 3.7 2.7 137* 6.0 3.4 176 CANYON 8090 1.2 .6 200* 4.0 1.8 222 FISHER CREEK 9100 5.7 2.6 219* 6.8 3.2 212 MADISON PLATEAU 7750 1.6 1.5 107* 4.7 2.4 196 NORTHEAST ENTRANCE 7350 .0 .3 0* 3.3 1.5 220 PARKER PEAK 9400 4.1 2.4 171* 5.3 2.2 241 SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228 THUMB DIVIDE 7980 .6 .8 75* 4.4 2.0 220 TWO OCEAN PLATEAU 9240 5.7 3.0 190* 6.1 3.0 203 WHISKEY CREEK 6800 .8 .7 114* 4.4 2.2 200 WHITE MILL 8700 4.1 1.9 216* 5.2 2.6 200 WOLVERINE 7650 .0 .5 0* 3.4 1.8 189 ----- ----- Basin wide percent of average 158* 207 WIND RIVER BURROUGHS CREEK 8750 2.0 .9 222* 4.0 1.6 250 COLD SPRINGS 9630 .0 1.0 0 2.3 1.9 121 DEER PARK 9700 1.6 2.5 64 3.1 2.4 129 HOBBS PARK 10100 1.5 2.1 71 3.2 2.1 152 LITTLE WARM 9370 1.3 1.0 130* 3.1 1.7 182 SOUTH PASS 9040 .0 1.5 0* 2.3 2.1 110 ST. LAWRENCE ALT 8620 .0 .8 0 1.4 1.7 82 TOGWOTEE PASS 9580 4.6 2.5 184* 5.8 2.7 215 TOWNSEND CREEK 8700 .0 1.0 0 2.5 2.1 119 ----- ----- Basin wide percent of average 83 151 BIGHORN BASIN BALD MTN. 9380 3.0 2.6 115 3.6 2.3 157 BEAR TRAP MEADOW 8200 .6 .6 100 1.9 1.7 112 BLACKWATER 9780 5.1 3.0 170 4.9 2.6 188 BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.4 162 EVENING STAR 9200 4.1 2.6 158* 6.3 2.7 233 GRAVE SPRINGS 8550 1.1 1.1 100* 2.5 2.1 119 KIRWIN 9550 3.5 1.8 194 4.8 1.8 267 MARQUETTE 8760 .0 1.9 0 3.0 2.2 136 MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.5 96 OWL CREEK 8975 .6 .8 75 2.4 1.1 218 POWDER RIVER PASS 9480 1.2 1.2 100 3.1 1.9 163 SHELL CREEK 9580 4.0 2.6 154 4.6 2.0 230 SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228 SYLVAN ROAD 7120 .0 .5 0* 5.0 2.1 238 TIMBER CREEK 7950 .0 1.0 0 3.0 1.6 188 YOUNTS PEAK 8350 2.3 1.3 177* 5.3 1.8 294 ----- ----- Basin wide percent of average 118 187 SHOSHONE RIVER BLACKWATER 9780 5.1 3.0 170 4.9 2.6 188 EVENING STAR 9200 4.1 2.6 158* 6.3 2.7 233 KIRWIN 9550 3.5 1.8 194 4.8 1.8 267 MARQUETTE 8760 .0 1.9 0 3.0 2.2 136 SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228 SYLVAN ROAD 7120 .0 .5 0* 5.0 2.1 238 YOUNTS PEAK 8350 2.3 1.3 177* 5.3 1.8 294 ----- ----- Basin wide percent of average 130* 223 POWDER-TONGUE BEAR TRAP MEADOW 8200 .6 .6 100 1.9 1.7 112 BIG GOOSE 7990 1.4 .8 175* 4.1 2.1 195 BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.4 162 BURGESS JUNCTION 7880 1.4 1.5 93 3.3 2.2 150 CLOUD PEAK RESERVOIR 9860 2.7 1.5 180* 5.1 2.5 204 DOME LAKE 8880 1.9 1.8 106 4.5 2.4 188 GRAVE SPRINGS 8550 1.1 1.1 100* 2.5 2.1 119 HANSEN SAWMILL 8360 .0 .8 0 2.9 1.8 161 MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.5 96 POWDER RIVER PASS 9480 1.2 1.2 100 3.1 1.9 163 SUCKER CREEK 8880 1.7 1.3 131* 3.7 2.3 161 TIE CREEK 6870 .0 .8 0 2.9 2.4 121 ----- ----- Basin wide percent of average 106 153 BELLE FOURCHE BLIND PARK 6890 .0 .5 0* 1.5 2.5 60 COLE CANYON 5910 .0 .8 0 1.1 -M * NORTH RAPID CREEK 6130 .0 .5 0* 1.1 2.4 46 ----- ----- Basin wide percent of average 0* 53 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .8 0* 3.7 2.3 161 DIVIDE PEAK 8860 1.1 1.7 65* 2.6 2.6 100 ELK RIVER 8700 .6 .6 100* 3.4 2.2 155 JOE WRIGHT 10120 2.2 2.5 88* 4.9 3.3 148 NORTH FRENCH CREEK 10130 2.3 3.1 74* 3.8 3.3 115 OLD BATTLE 9920 2.4 3.0 80* 4.4 3.5 126 SAGE CREEK BASIN 7850 .0 .9 0* 2.1 1.5 140 SOUTH BRUSH CREEK 8440 .9 .7 129* 3.2 2.5 128 TOWER 10500 2.7 3.4 79* 4.9 3.8 129 WEBBER SPRINGS 9250 1.3 1.8 72* 3.5 3.0 117 WILLOW CREEK PASS 9540 2.1 1.1 191* 3.0 2.0 150 ----- ----- Basin wide percent of average 80* 132 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.1 2.1 52* 2.6 2.4 108 CASPER MTN. 7850 1.4 1.7 82* 3.3 2.4 138 DEADMAN HILL 10220 2.6 2.1 124 3.3 2.4 138 DEER PARK 9700 1.6 2.5 64 3.1 2.4 129 LAPRELE CREEK 8375 .6 1.0 60* 2.2 1.9 116 RENO HILL 8500 1.9 1.7 112 3.7 2.4 154 ROACH 9700 1.8 1.2 150* 3.2 2.2 145 SAND LAKE 10050 3.6 3.2 112* 4.4 3.0 147 SOUTH PASS 9040 .0 1.5 0* 2.3 2.1 110 WINDY PEAK 7900 .6 .5 120* 1.9 1.7 112 ----- ----- Basin wide percent of average 87* 131 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .5 * 2.2 1.9 116 DIVIDE PEAK 8860 1.1 1.7 65* 2.6 2.6 100 OLD BATTLE 9920 2.4 3.0 80* 4.4 3.5 126 SANDSTONE RS 8150 .0 .5 0* 2.2 2.2 100 WHISKEY PARK 8950 .9 1.6 56* 3.7 2.8 132 ----- ----- Basin wide percent of average 65* 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.4 1.2 117* 2.1 1.8 117 BLIND BULL SUM 8900 1.8 1.6 112* 3.1 2.2 141 EAST RIM DIVIDE 7930 .0 .6 0* 2.1 1.3 162 ELKHART PARK G.S. 9400 1.2 .8 150* 2.6 1.9 137 GROS VENTRE SUMMIT 8750 2.1 1.3 162* 4.0 1.8 222 KENDALL R.S. 7740 .2 .6 33* 2.3 1.5 153 LOOMIS PARK 8240 .9 .9 100* 2.5 1.8 139 NEW FORK LAKE 8340 .5 .5 100* 2.4 1.5 160 SNIDER BASIN 8060 .2 .7 29* 1.9 1.6 119 SPRING CREEK DIVIDE 9000 1.9 1.4 136* 3.4 2.5 136 TRIPLE PEAK 8500 1.5 1.2 125* 4.5 2.2 205 ----- ----- Basin wide percent of average 108* 154 LOWER GREEN RIVER HAMS FORK 7840 .0 .4 0* 1.6 1.4 114 HEWINTA 9500 .0 .8 0* 4.3 2.3 187 HICKERSON PARK 9100 .3 .4 75* 2.9 1.7 171 HOLE-IN-ROCK 9150 .5 .4 125* 3.4 1.6 212 INDIAN CREEK 9425 1.7 1.5 113* 2.8 2.5 112 KELLEY R.S. 8180 .5 .9 56* 2.9 2.1 138 STEEL CREEK PARK 10100 3.8 1.6 237* 4.5 2.2 205 ----- ----- Basin wide percent of average 113* 162 UPPER BEAR RIVER BUG LAKE 7950 .1 1.2 8* 1.7 2.2 77 HAYDEN FORK 9100 .2 .8 25* 3.4 2.3 148 KELLEY R.S. 8180 .5 .9 56* 2.9 2.1 138 LILY LAKE 9050 .2 .9 22* 3.7 2.3 161 MONTE CRISTO 8960 .0 1.6 0* 3.2 2.7 119 SALT RIVER SUMMIT 7600 .1 .4 25* 2.6 1.9 137 TRIAL LAKE 9960 1.1 1.9 58* 2.7 2.7 100 ----- ----- Basin wide percent of average 29* 125 ----------------------------------------------------------------------------- -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.