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 SATURDAY: MAY 14 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.2 7.0 289 34.0 25.5 133 COTTONWOOD CREEK 7670 35.6 14.4 247 46.8 33.7 139 GRAND TARGHEE 9260 67.1 -M * 45.8 -M * GRANITE CREEK 6770 21.5 8.2 262 32.8 23.5 140 GRASSY LAKE 7265 45.3 27.1 167 54.9 42.7 129 GROS VENTRE SUMMIT 8750 19.6 10.2 192 22.3 16.3 137 GUNSIGHT PASS 9820 -M -M * 25.4 -M * LEWIS LAKE DIVIDE 7850 55.3 29.5 187 49.2 43.3 114 PHILLIPS BENCH 8200 43.1 24.6 175 45.5 34.7 131 SALT RIVER SUMMIT 7760 16.9 5.3 319 27.8 22.7 122 SNAKE RIVER STATION 6920 -M 6.2 * 35.3 26.8 132 SPRING CREEK DIVIDE 9000 44.6 25.1 178 41.8 31.5 133 THUMB DIVIDE 7980 24.7 10.1 245 28.6 23.3 123 TOGWOTEE PASS 9580 41.2 27.5 150 43.0 30.7 140 TWO OCEAN PLATEAU 9240 52.0 30.8 169 42.8 34.0 126 WILLOW CREEK 8380 48.0 25.8 186 55.1 40.0 138 ----- ----- Basin wide percent of average 191 131 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 34.0 25.6 133 33.4 25.1 133 BLACK BEAR 8170 57.4 37.0 155 58.1 47.9 121 CANYON 7870 17.1 7.4 231 24.8 18.9 131 FISHER CREEK 9100 52.5 36.8 143 52.4 44.0 119 MADISON PLATEAU 7750 36.1 20.1 180 41.2 32.0 129 NORTHEAST ENTRANCE 7350 9.5 3.8 250 21.1 15.9 133 PARKER PEAK 9400 40.4 24.1 168 -M 21.1 * SYLVAN LAKE 8420 31.0 20.8 149 38.6 26.5 146 THUMB DIVIDE 7980 24.7 10.1 245 28.6 23.3 123 TWO OCEAN PLATEAU 9240 52.0 30.8 169 42.8 34.0 126 WHISKEY CREEK 6800 20.6 10.3 200 31.0 25.5 122 WHITE MILL 8700 37.1 24.9 149 38.0 33.0 115 WOLVERINE 7650 11.4 3.5 326 20.0 16.6 120 ----- ----- Basin wide percent of average 166 125 WIND RIVER BURROUGHS CREEK 8750 22.3 10.6 210 25.9 20.8 125 CASTLE CREEK 8400 1.5 -M * 12.2 -M * COLD SPRINGS 9630 8.4 3.5 240 14.5 15.4 94 DEER PARK 9700 21.0 17.3 121 27.1 28.7 94 HOBBS PARK 10100 18.7 16.9 111 18.7 18.8 99 LITTLE WARM 9370 17.0 8.0 213 20.4 18.3 111 SOUTH PASS 9040 15.9 14.4 110 17.7 24.4 73 ST. LAWRENCE ALT 8620 1.1 4.0 28 13.1 13.6 96 TOGWOTEE PASS 9580 41.2 27.5 150 43.0 30.7 140 TOWNSEND CREEK 8700 4.7 5.9 80 14.7 17.1 86 ----- ----- Basin wide percent of average 139 104 BIGHORN BASIN BALD MTN. 9380 33.3 23.2 144 27.7 23.3 119 BEAR TRAP MEADOW 8200 9.6 .9 1067 14.4 12.4 116 BLACKWATER 9780 39.5 28.9 137 37.6 26.5 142 BONE SPRINGS DIV 9350 28.3 16.5 172 24.3 20.1 121 EVENING STAR 9200 42.2 32.6 129 46.8 31.8 147 GRAVE SPRINGS 8550 10.8 8.4 129 13.8 14.6 95 KIRWIN 9550 17.1 11.3 151 19.8 15.7 126 MARQUETTE 8760 9.6 -M * 13.3 15.6 85 MIDDLE POWDER 7760 14.6 11.5 127 15.3 17.4 88 OWL CREEK 8975 3.7 2.5 148 10.4 9.4 111 POWDER RIVER PASS 9480 20.9 8.4 249 25.9 17.5 148 SHELL CREEK 9580 24.9 16.5 151 23.7 18.5 128 SYLVAN LAKE 8420 31.0 20.8 149 38.6 26.5 146 SYLVAN ROAD 7120 9.6 3.1 310 28.9 21.8 133 TIMBER CREEK 7950 4.4 2.3 191 11.5 12.3 93 YOUNTS PEAK 8350 24.4 15.8 154 24.0 20.2 119 ----- ----- Basin wide percent of average 155 124 SHOSHONE RIVER BLACKWATER 9780 39.5 28.9 137 37.6 26.5 142 EVENING STAR 9200 42.2 32.6 129 46.8 31.8 147 KIRWIN 9550 17.1 11.3 151 19.8 15.7 126 MARQUETTE 8760 9.6 -M * 13.3 15.6 85 SYLVAN LAKE 8420 31.0 20.8 149 38.6 26.5 146 SYLVAN ROAD 7120 9.6 3.1 310 28.9 21.8 133 YOUNTS PEAK 8350 24.4 15.8 154 24.0 20.2 119 ----- ----- Basin wide percent of average 146 132 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.6 .9 1067 14.4 12.4 116 BIG GOOSE 7990 12.4 9.3 133 16.9 14.7 115 BONE SPRINGS DIV 9350 28.3 16.5 172 24.3 20.1 121 BURGESS JUNCTION 7880 15.1 10.5 144 18.3 16.9 108 CLOUD PEAK RESERVOIR 9860 20.8 15.0 139 22.5 19.2 117 DOME LAKE 8880 18.6 10.7 174 20.8 18.6 112 GRAVE SPRINGS 8550 10.8 8.4 129 13.8 14.6 95 HANSEN SAWMILL 8360 9.0 2.4 375 13.9 12.3 113 LITTLE GOOSE 8870 15.3 -M * 21.5 -M * MIDDLE POWDER 7760 14.6 11.5 127 15.3 17.4 88 POWDER RIVER PASS 9480 20.9 8.4 249 25.9 17.5 148 SOLDIER PARK 8720 10.7 -M * 14.5 -M * SUCKER CREEK 8880 19.0 10.5 181 23.0 19.4 119 TIE CREEK 6870 5.9 1.5 393 15.9 15.3 104 ----- ----- Basin wide percent of average 175 113 BELLE FOURCHE BLIND PARK 6890 4.7 .2 2350* 22.9 15.8 145 COLE CANYON 5910 3.1 .9 344 18.0 11.1 162 NORTH RAPID CREEK 6130 .0 .7 0* 17.8 12.6 141 ----- ----- Basin wide percent of average 433* 149 UPPER N. PLATTE RIVER CINNABAR PARK 9574 31.9 11.5 277 43.1 25.3 170 COLUMBINE 9160 34.8 13.8 252 45.2 30.6 148 DIVIDE PEAK 8880 30.5 13.3 229 38.2 25.8 148 ELK RIVER 8700 25.5 8.1 315 34.9 24.4 143 JOE WRIGHT 10120 49.9 24.0 208 49.8 32.3 154 NORTH FRENCH CREEK 10130 62.8 33.4 188 61.6 31.9 193 OLD BATTLE 10000 57.8 35.8 161 61.7 42.0 147 SAGE CREEK BASIN 7850 9.5 7.7 123 24.3 15.0 162 SOUTH BRUSH CREEK 8440 20.0 6.9 290 31.6 21.8 145 TOWER 10500 74.2 51.7 144 68.4 47.6 144 WEBBER SPRINGS 9250 36.2 18.8 193 47.7 32.9 145 WILLOW CREEK PASS 9540 25.9 11.6 223 26.3 17.0 155 ----- ----- Basin wide percent of average 194 154 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 40.4 23.7 170 42.3 29.0 146 CASPER MTN. 7900 10.9 12.2 89 19.8 21.6 92 DEADMAN HILL 10220 30.9 18.3 169 32.3 22.7 142 DEER PARK 9700 21.0 17.3 121 27.1 28.7 94 LAPRELE CREEK 8375 11.1 3.8 292 19.5 18.1 108 RENO HILL 8400 17.7 10.1 175 24.7 22.4 110 ROACH 9700 26.6 13.9 191 32.6 24.3 134 SAND LAKE 10050 50.5 35.8 141 48.7 31.7 154 SOUTH PASS 9040 15.9 14.4 110 17.7 24.4 73 WINDY PEAK 7900 5.5 1.9 289 17.8 15.1 118 ----- ----- Basin wide percent of average 152 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .9 * 22.4 19.7 114 DIVIDE PEAK 8880 30.5 13.3 229 38.2 25.8 148 OLD BATTLE 10000 57.8 35.8 161 61.7 42.0 147 SANDSTONE RS 8150 17.4 4.1 424 34.3 23.3 147 WHISKEY PARK 8950 -M 27.0 * 54.9 35.9 153 ----- ----- Basin wide percent of average 199 144 UPPER GREEN RIVER BIG SANDY OPENING 9080 17.6 9.4 187 20.7 17.1 121 BLIND BULL SUM 8650 45.2 25.2 179 31.1 26.5 117 EAST RIM DIVIDE 7930 10.1 9.6 105 18.5 14.8 125 ELKHART PARK G.S. 9400 17.2 9.7 177 18.7 17.3 108 GROS VENTRE SUMMIT 8750 19.6 10.2 192 22.3 16.3 137 GUNSIGHT PASS 9820 -M -M * 25.4 -M * KENDALL R.S. 7740 10.8 4.2 257 21.9 17.4 126 LOOMIS PARK 8240 22.3 10.1 221 29.0 21.1 137 NEW FORK LAKE 8340 10.8 4.2 257 15.6 14.5 108 POCKET CREEK 9360 15.9 -M * 19.3 -M * SNIDER BASIN 8060 18.8 8.1 232 24.5 19.4 126 SPRING CREEK DIVIDE 9000 44.6 25.1 178 41.8 31.5 133 TRIPLE PEAK 8500 39.7 17.7 224 44.9 30.2 149 ----- ----- Basin wide percent of average 192 128 LOWER GREEN RIVER HAMS FORK 7840 8.4 1.5 560 19.7 15.8 125 HEWINTA 9519 13.8 4.8 288 24.6 19.0 129 HICKERSON PARK 9145 .0 2.3 0 14.5 11.3 128 HOLE-IN-ROCK 9150 4.9 1.9 258 16.3 10.8 151 INDIAN CREEK 9425 39.4 24.2 163 34.6 30.9 112 KELLEY R.S. 8180 21.1 9.5 222 30.6 24.8 123 STEEL CREEK PARK 10200 26.4 18.3 144 28.8 21.5 134 ----- ----- Basin wide percent of average 182 126 UPPER BEAR RIVER BUG LAKE 7950 33.8 11.4 296 36.9 23.7 156 HAYDEN FORK 9212 23.6 7.8 303 39.1 26.7 146 KELLEY R.S. 8180 21.1 9.5 222 30.6 24.8 123 LILY LAKE 9156 24.0 6.7 358 30.3 22.5 135 MONTE CRISTO 8960 47.9 23.2 206 47.7 32.1 149 SALT RIVER SUMMIT 7760 16.9 5.3 319 27.8 22.7 122 TRIAL LAKE 9992 50.1 23.6 212 44.0 31.2 141 ----- ----- Basin wide percent of average 248 140 ----------------------------------------------------------------------------- -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.