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 31 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .8 .7 114* 5.3 2.0 265 COTTONWOOD CREEK 7600 1.7 .9 189* 5.1 3.0 170 GRANITE CREEK 6770 .8 .6 133* 4.2 1.7 247 GRASSY LAKE 7265 1.2 1.4 86* 6.7 3.4 197 GROS VENTRE SUMMIT 8750 2.2 1.4 157* 4.0 1.8 222 LEWIS LAKE DIVIDE 7850 1.3 1.2 108* 6.0 3.2 188 PHILLIPS BENCH 8200 1.3 1.4 93* 5.3 2.4 221 SALT RIVER SUMMIT 7600 .0 .4 0* 2.5 1.9 132 SNAKE RIVER STATION 6920 .0 .6 0* 5.2 2.2 236 SPRING CREEK DIVIDE 9000 1.9 1.5 127* 3.4 2.6 131 THUMB DIVIDE 7980 .5 .9 56* 4.5 2.0 225 TOGWOTEE PASS 9580 4.8 2.6 185* 5.8 2.8 207 TWO OCEAN PLATEAU 9240 6.2 3.1 200* 6.5 3.1 210 WILLOW CREEK 8450 2.2 1.8 122* 6.8 3.7 184 ----- ----- Basin wide percent of average 135* 199 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.9 2.6 188 4.7 2.1 224 BLACK BEAR 8170 4.3 2.8 154* 6.8 3.5 194 CANYON 8090 1.4 .7 200* 4.2 1.8 233 FISHER CREEK 9100 5.9 2.7 219* 7.0 3.3 212 MADISON PLATEAU 7750 1.7 1.6 106* 5.0 2.5 200 NORTHEAST ENTRANCE 7350 .0 .3 0* 3.3 1.5 220 PARKER PEAK 9400 4.7 2.5 188 5.7 2.3 248 SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231 THUMB DIVIDE 7980 .5 .9 56* 4.5 2.0 225 TWO OCEAN PLATEAU 9240 6.2 3.1 200* 6.5 3.1 210 WHISKEY CREEK 6800 .9 .8 112* 4.5 2.2 205 WHITE MILL 8700 4.3 2.0 215* 5.4 2.7 200 WOLVERINE 7650 .2 .5 40* 3.6 1.8 200 ----- ----- Basin wide percent of average 165* 214 WIND RIVER BURROUGHS CREEK 8750 2.1 1.0 210* 4.2 1.6 262 COLD SPRINGS 9630 .0 1.0 0 2.4 1.9 126 DEER PARK 9700 1.7 2.6 65 3.2 2.5 128 HOBBS PARK 10100 1.5 2.2 68 3.2 2.1 152 LITTLE WARM 9370 1.2 1.1 109* 3.1 1.7 182 SOUTH PASS 9040 .1 1.5 7* 2.4 2.1 114 ST. LAWRENCE ALT 8620 .0 .9 0 1.5 1.7 88 TOGWOTEE PASS 9580 4.8 2.6 185* 5.8 2.8 207 TOWNSEND CREEK 8700 .2 1.1 18 2.6 2.1 124 ----- ----- Basin wide percent of average 83 154 BIGHORN BASIN BALD MTN. 9380 3.1 2.7 115 3.6 2.4 150 BEAR TRAP MEADOW 8200 .1 .6 17 2.1 1.7 124 BLACKWATER 9780 5.2 3.1 168 4.9 2.7 181 BONE SPRINGS DIV 9350 2.6 2.6 100 4.1 2.5 164 EVENING STAR 9200 4.3 2.7 159* 6.5 2.8 232 GRAVE SPRINGS 8550 1.3 1.1 118 2.8 2.1 133 KIRWIN 9550 3.6 1.8 200 5.0 1.8 278 MARQUETTE 8760 .2 1.9 11 3.1 2.3 135 MIDDLE POWDER 7760 1.9 1.3 146* 2.8 2.6 108 OWL CREEK 8975 .9 .9 100 2.6 1.2 217 POWDER RIVER PASS 9480 1.6 1.3 123 3.5 1.9 184 SHELL CREEK 9580 4.4 2.6 169 5.0 2.0 250 SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231 SYLVAN ROAD 7120 .0 .5 0* 5.2 2.1 248 TIMBER CREEK 7950 .3 1.0 30 3.5 1.6 219 YOUNTS PEAK 8350 2.2 1.4 157* 5.5 1.8 306 ----- ----- Basin wide percent of average 123 194 SHOSHONE RIVER BLACKWATER 9780 5.2 3.1 168 4.9 2.7 181 EVENING STAR 9200 4.3 2.7 159* 6.5 2.8 232 KIRWIN 9550 3.6 1.8 200 5.0 1.8 278 MARQUETTE 8760 .2 1.9 11 3.1 2.3 135 SYLVAN LAKE 8420 2.0 1.9 105* 6.0 2.6 231 SYLVAN ROAD 7120 .0 .5 0* 5.2 2.1 248 YOUNTS PEAK 8350 2.2 1.4 157* 5.5 1.8 306 ----- ----- Basin wide percent of average 132* 225 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .6 17 2.1 1.7 124 BIG GOOSE 7990 1.5 .9 167* 4.2 2.1 200 BONE SPRINGS DIV 9350 2.6 2.6 100 4.1 2.5 164 BURGESS JUNCTION 7880 1.5 1.5 100 3.5 2.2 159 CLOUD PEAK RESERVOIR 9860 3.1 1.5 207* 5.2 2.6 200 DOME LAKE 8880 2.0 1.8 111 4.6 2.5 184 GRAVE SPRINGS 8550 1.3 1.1 118 2.8 2.1 133 HANSEN SAWMILL 8360 .5 .9 56 3.3 1.8 183 MIDDLE POWDER 7760 1.9 1.3 146* 2.8 2.6 108 POWDER RIVER PASS 9480 1.6 1.3 123 3.5 1.9 184 SUCKER CREEK 8880 1.9 1.3 146* 3.9 2.4 162 TIE CREEK 6870 .1 .8 12 3.1 2.5 124 ----- ----- Basin wide percent of average 116 160 BELLE FOURCHE BLIND PARK 6890 .0 .6 0* 1.5 2.6 58 COLE CANYON 5910 .0 .8 0 1.1 -M * NORTH RAPID CREEK 6130 .0 .5 0* 1.1 2.5 44 ----- ----- Basin wide percent of average 0* 51 UPPER N. PLATTE RIVER COLUMBINE 9160 .2 .8 25* 3.9 2.4 162 DIVIDE PEAK 8860 1.5 1.7 88* 3.2 2.7 119 ELK RIVER 8700 .6 .7 86* 3.4 2.2 155 JOE WRIGHT 10120 2.3 2.6 88 5.1 3.4 150 NORTH FRENCH CREEK 10130 3.2 3.2 100* 4.6 3.4 135 OLD BATTLE 9920 2.9 3.1 94* 4.7 3.6 131 SAGE CREEK BASIN 7850 .1 1.0 10* 2.7 1.5 180 SOUTH BRUSH CREEK 8440 1.2 .8 150* 3.7 2.6 142 TOWER 10500 3.3 3.5 94* 5.0 4.0 125 WEBBER SPRINGS 9250 1.5 1.9 79* 3.8 3.1 123 WILLOW CREEK PASS 9540 2.3 1.1 209* 3.1 2.0 155 ----- ----- Basin wide percent of average 94* 140 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.6 2.2 73* 2.9 2.5 116 CASPER MTN. 7850 1.2 1.7 71 3.6 2.5 144 DEADMAN HILL 10220 2.6 2.2 118 3.5 2.5 140 DEER PARK 9700 1.7 2.6 65 3.2 2.5 128 LAPRELE CREEK 8375 .3 1.1 27* 2.2 1.9 116 RENO HILL 8500 2.1 1.7 124 4.0 2.5 160 ROACH 9700 1.9 1.2 158* 3.4 2.3 148 SAND LAKE 10050 4.3 3.3 130* 5.1 3.1 165 SOUTH PASS 9040 .1 1.5 7* 2.4 2.1 114 WINDY PEAK 7900 .5 .6 83* 1.7 1.7 100 ----- ----- Basin wide percent of average 90* 136 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .6 * 2.4 1.9 126 DIVIDE PEAK 8860 1.5 1.7 88* 3.2 2.7 119 OLD BATTLE 9920 2.9 3.1 94* 4.7 3.6 131 SANDSTONE RS 8150 .0 .6 0* 2.4 2.3 104 WHISKEY PARK 8950 1.3 1.7 76* 4.2 2.9 145 ----- ----- Basin wide percent of average 80* 126 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.4 1.2 117* 2.1 1.8 117 BLIND BULL SUM 8900 1.8 1.7 106* 3.2 2.2 145 EAST RIM DIVIDE 7930 .0 .7 0* 2.0 1.4 143 ELKHART PARK G.S. 9400 1.1 .9 122* 2.4 1.9 126 GROS VENTRE SUMMIT 8750 2.2 1.4 157* 4.0 1.8 222 KENDALL R.S. 7740 .2 .7 29* 2.3 1.5 153 LOOMIS PARK 8240 .7 1.0 70* 2.4 1.8 133 NEW FORK LAKE 8340 .3 .6 50* 2.1 1.5 140 SNIDER BASIN 8060 .1 .8 12* 1.8 1.6 112 SPRING CREEK DIVIDE 9000 1.9 1.5 127* 3.4 2.6 131 TRIPLE PEAK 8500 1.5 1.2 125* 4.6 2.2 209 ----- ----- Basin wide percent of average 96* 149 LOWER GREEN RIVER HAMS FORK 7840 .0 .5 0* 1.6 1.5 107 HEWINTA 9500 .0 .9 0* 4.5 2.4 188 HICKERSON PARK 9100 .3 .5 60* 2.9 1.7 171 HOLE-IN-ROCK 9150 .4 .5 80* 3.4 1.6 212 INDIAN CREEK 9425 1.7 1.5 113* 2.8 2.6 108 KELLEY R.S. 8180 .2 1.0 20* 2.9 2.1 138 STEEL CREEK PARK 10100 4.1 1.6 256* 4.7 2.3 204 ----- ----- Basin wide percent of average 103* 161 UPPER BEAR RIVER BUG LAKE 7950 .1 1.3 8* 1.4 2.3 61 HAYDEN FORK 9100 .3 .9 33* 3.6 2.4 150 KELLEY R.S. 8180 .2 1.0 20* 2.9 2.1 138 LILY LAKE 9050 .3 1.0 30* 3.8 2.4 158 MONTE CRISTO 8960 .0 1.6 0* 2.9 2.8 104 SALT RIVER SUMMIT 7600 .0 .4 0* 2.5 1.9 132 TRIAL LAKE 9960 1.3 1.9 68* 2.9 2.8 104 ----- ----- Basin wide percent of average 27* 120 ----------------------------------------------------------------------------- -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.