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 MONDAY: MAY 30 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.5 .0 * 35.8 26.9 133 COTTONWOOD CREEK 7670 29.8 6.2 481 50.1 35.6 141 GRAND TARGHEE 9260 68.7 -M * -M -M * GRANITE CREEK 6770 13.5 1.7 794* 34.2 24.8 138 GRASSY LAKE 7265 35.6 15.7 227 57.2 44.8 128 GROS VENTRE SUMMIT 8750 15.9 4.5 353 23.2 17.5 133 GUNSIGHT PASS 9820 -M -M * 27.5 -M * LEWIS LAKE DIVIDE 7850 44.4 19.4 229 50.3 45.2 111 PHILLIPS BENCH 8200 37.7 15.3 246 47.7 36.4 131 SALT RIVER SUMMIT 7760 9.4 .0 * 29.2 24.0 122 SNAKE RIVER STATION 6920 -M .0 * 36.9 28.2 131 SPRING CREEK DIVIDE 9000 42.4 16.3 260 44.2 32.9 134 THUMB DIVIDE 7980 16.0 2.9 552 30.6 24.7 124 TOGWOTEE PASS 9580 42.0 22.8 184 45.4 32.5 140 TWO OCEAN PLATEAU 9240 53.7 26.1 206 45.1 36.1 125 WILLOW CREEK 8380 41.5 15.8 263 58.5 42.3 138 ----- ----- Basin wide percent of average 267 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 33.8 21.1 160 36.5 26.8 136 BLACK BEAR 8170 53.1 27.6 192 62.7 50.0 125 CANYON 7870 -M 2.0 * 26.9 20.3 133 FISHER CREEK 9100 53.7 30.8 174 55.6 46.4 120 MADISON PLATEAU 7750 30.9 10.2 303 45.4 34.1 133 NORTHEAST ENTRANCE 7350 .1 .5 20* 23.0 17.4 132 PARKER PEAK 9400 41.1 19.4 212 41.5 23.0 180 SYLVAN LAKE 8420 -M 12.7 * 41.7 28.7 145 THUMB DIVIDE 7980 16.0 2.9 552 30.6 24.7 124 TWO OCEAN PLATEAU 9240 53.7 26.1 206 45.1 36.1 125 WHISKEY CREEK 6800 -M 1.8 * 34.2 27.1 126 WHITE MILL 8700 34.9 19.0 184 40.3 35.0 115 WOLVERINE 7650 -M .0 * 21.8 18.1 120 ----- ----- Basin wide percent of average 201 130 WIND RIVER BURROUGHS CREEK 8750 -M 4.2 * 28.1 22.4 125 CASTLE CREEK 8400 .0 -M * 14.2 -M * COLD SPRINGS 9630 10.7 1.1 973 19.8 16.9 117 DEER PARK 9700 -M 9.2 * -M 30.7 * HOBBS PARK 10100 25.8 10.9 237 26.7 20.8 128 LITTLE WARM 9370 15.8 2.4 658 21.9 19.8 111 SOUTH PASS 9040 20.3 7.3 278 25.3 25.9 98 ST. LAWRENCE ALT 8620 -M .7 * 19.7 15.0 131 TOGWOTEE PASS 9580 42.0 22.8 184 45.4 32.5 140 TOWNSEND CREEK 8700 7.8 2.0 390 21.7 18.6 117 ----- ----- Basin wide percent of average 263 121 BIGHORN BASIN BALD MTN. 9380 39.8 17.5 227 33.0 25.1 131 BEAR TRAP MEADOW 8200 -M .0 * 19.4 14.0 139 BLACKWATER 9780 -M 25.5 * 41.4 28.6 145 BONE SPRINGS DIV 9350 32.4 9.4 345 28.9 22.1 131 EVENING STAR 9200 42.2 27.4 154 51.5 34.1 151 GRAVE SPRINGS 8550 -M 2.2 * -M 15.9 * KIRWIN 9550 18.5 6.2 298 23.9 17.3 138 MARQUETTE 8760 14.4 -M * 20.0 17.7 113 MIDDLE POWDER 7760 12.3 3.5 351 21.1 18.9 112 OWL CREEK 8975 -M .6 * 14.5 10.9 133 POWDER RIVER PASS 9480 22.6 2.9 779 29.9 19.4 154 SHELL CREEK 9580 28.9 11.4 254 28.7 20.3 141 SYLVAN LAKE 8420 -M 12.7 * 41.7 28.7 145 SYLVAN ROAD 7120 .0 .2 0* 31.0 23.1 134 TIMBER CREEK 7950 2.0 .7 286 16.2 14.2 114 YOUNTS PEAK 8350 20.2 8.1 249 25.0 21.9 114 ----- ----- Basin wide percent of average 251 135 SHOSHONE RIVER BLACKWATER 9780 -M 25.5 * 41.4 28.6 145 EVENING STAR 9200 42.2 27.4 154 51.5 34.1 151 KIRWIN 9550 18.5 6.2 298 23.9 17.3 138 MARQUETTE 8760 14.4 -M * 20.0 17.7 113 SYLVAN LAKE 8420 -M 12.7 * 41.7 28.7 145 SYLVAN ROAD 7120 .0 .2 0* 31.0 23.1 134 YOUNTS PEAK 8350 20.2 8.1 249 25.0 21.9 114 ----- ----- Basin wide percent of average 193* 137 POWDER-TONGUE BEAR TRAP MEADOW 8200 -M .0 * 19.4 14.0 139 BIG GOOSE 7990 13.6 3.9 349 23.9 16.3 147 BONE SPRINGS DIV 9350 32.4 9.4 345 28.9 22.1 131 BURGESS JUNCTION 7880 15.2 3.5 434 25.2 18.3 138 CLOUD PEAK RESERVOIR 9860 -M 8.7 * 29.6 21.5 138 DOME LAKE 8880 20.5 3.9 526 26.3 20.4 129 GRAVE SPRINGS 8550 -M 2.2 * -M 15.9 * HANSEN SAWMILL 8360 -M .3 * -M 13.9 * LITTLE GOOSE 8870 17.9 -M * 27.6 -M * MIDDLE POWDER 7760 12.3 3.5 351 21.1 18.9 112 POWDER RIVER PASS 9480 22.6 2.9 779 29.9 19.4 154 SOLDIER PARK 8720 11.1 -M * 20.3 -M * SUCKER CREEK 8880 23.8 4.3 553 30.8 21.3 145 TIE CREEK 6870 -M .0 * -M 17.0 * ----- ----- Basin wide percent of average 447 137 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 28.6 17.7 162 COLE CANYON 5910 .2 .0 * 24.2 12.7 191 NORTH RAPID CREEK 6130 .0 .0 100* 24.5 13.8 178 ----- ----- Basin wide percent of average * 175 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.2 2.3 1226 46.7 26.6 176 COLUMBINE 9160 24.8 2.9 855 48.7 32.1 152 DIVIDE PEAK 8880 22.8 4.5 507 41.0 27.3 150 ELK RIVER 8700 16.7 1.7 982* 37.7 25.8 146 JOE WRIGHT 10120 51.3 18.1 283 53.5 34.6 155 NORTH FRENCH CREEK 10130 65.2 25.4 257 61.6 34.1 181 OLD BATTLE 10000 -M 27.1 * 66.7 44.0 152 SAGE CREEK BASIN 7850 .0 2.6 0 25.9 15.8 164 SOUTH BRUSH CREEK 8440 -M 2.1 * 33.2 23.5 141 TOWER 10500 79.4 44.2 180 72.0 49.8 145 WEBBER SPRINGS 9250 29.9 7.8 383 50.8 34.5 147 WILLOW CREEK PASS 9540 23.4 4.0 585 28.9 18.6 155 ----- ----- Basin wide percent of average 301 155 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 13.0 * 47.1 30.9 152 CASPER MTN. 7900 5.6 4.8 117 23.4 23.8 98 DEADMAN HILL 10220 30.9 12.3 251 34.9 24.5 142 DEER PARK 9700 -M 9.2 * -M 30.7 * LAPRELE CREEK 8375 4.3 1.0 430* 22.4 19.9 113 RENO HILL 8400 12.6 4.0 315 27.5 24.5 112 ROACH 9700 23.5 6.7 351 35.7 26.2 136 SAND LAKE 10050 52.6 27.4 192 52.8 34.0 155 SOUTH PASS 9040 20.3 7.3 278 25.3 25.9 98 WINDY PEAK 7900 .1 .2 50* 20.4 16.9 121 ----- ----- Basin wide percent of average 235 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.6 20.8 123 DIVIDE PEAK 8880 22.8 4.5 507 41.0 27.3 150 OLD BATTLE 10000 -M 27.1 * 66.7 44.0 152 SANDSTONE RS 8150 8.1 .3 2700* 37.3 24.6 152 WHISKEY PARK 8950 -M 15.3 * 59.2 37.6 157 ----- ----- Basin wide percent of average 644* 149 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.5 2.4 563 23.1 18.4 126 BLIND BULL SUM 8650 42.5 18.8 226 32.1 28.0 115 EAST RIM DIVIDE 7930 .1 2.5 4 19.6 15.9 123 ELKHART PARK G.S. 9400 13.0 4.1 317 19.8 18.9 105 GROS VENTRE SUMMIT 8750 15.9 4.5 353 23.2 17.5 133 GUNSIGHT PASS 9820 -M -M * 27.5 -M * KENDALL R.S. 7740 2.4 .0 * 22.8 18.5 123 LOOMIS PARK 8240 14.2 3.2 444 30.1 22.3 135 NEW FORK LAKE 8340 3.3 .0 * 16.4 15.7 104 POCKET CREEK 9360 13.8 -M * 21.6 -M * SNIDER BASIN 8060 11.1 .5 2220* 26.6 20.3 131 SPRING CREEK DIVIDE 9000 42.4 16.3 260 44.2 32.9 134 TRIPLE PEAK 8500 33.0 6.4 516 46.8 31.8 147 ----- ----- Basin wide percent of average 326 127 LOWER GREEN RIVER HAMS FORK 7840 .3 .0 * 22.5 16.9 133 HEWINTA 9519 11.3 .8 1413* 28.2 20.2 140 HICKERSON PARK 9145 .7 .1 700* 18.7 12.5 150 HOLE-IN-ROCK 9150 1.3 .1 1300* 20.3 12.1 168 INDIAN CREEK 9425 38.1 15.9 240 37.7 32.3 117 KELLEY R.S. 8180 16.9 2.4 704 33.0 26.1 126 STEEL CREEK PARK 10200 28.9 12.7 228 32.7 23.0 142 ----- ----- Basin wide percent of average 305* 135 UPPER BEAR RIVER BUG LAKE 7950 29.6 3.3 897 41.1 25.0 164 HAYDEN FORK 9212 16.4 1.9 863 42.4 28.3 150 KELLEY R.S. 8180 16.9 2.4 704 33.0 26.1 126 LILY LAKE 9156 21.8 1.8 1211 33.8 23.9 141 MONTE CRISTO 8960 48.4 13.8 351 52.7 33.9 155 SALT RIVER SUMMIT 7760 9.4 .0 * 29.2 24.0 122 TRIAL LAKE 9992 51.2 15.7 326 47.4 33.1 143 ----- ----- Basin wide percent of average 498 144 ----------------------------------------------------------------------------- -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.