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: MAY 27 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.6 1.0 1160* 35.6 26.7 133 COTTONWOOD CREEK 7670 30.0 7.8 385 49.2 35.3 139 GRAND TARGHEE 9260 70.5 -M * -M -M * GRANITE CREEK 6770 14.1 3.0 470 33.5 24.5 137 GRASSY LAKE 7265 35.7 18.2 196 56.5 44.4 127 GROS VENTRE SUMMIT 8750 16.8 5.7 295 23.1 17.3 134 GUNSIGHT PASS 9820 -M -M * 27.3 -M * LEWIS LAKE DIVIDE 7850 45.3 21.6 210 50.0 44.9 111 PHILLIPS BENCH 8200 37.8 17.2 220 47.3 36.1 131 SALT RIVER SUMMIT 7760 9.7 .0 * 28.7 23.8 121 SNAKE RIVER STATION 6920 -M .0 * 36.3 28.0 130 SPRING CREEK DIVIDE 9000 41.8 18.3 228 43.0 32.7 131 THUMB DIVIDE 7980 15.3 4.3 356 29.5 24.4 121 TOGWOTEE PASS 9580 41.4 24.1 172 44.7 32.2 139 TWO OCEAN PLATEAU 9240 53.2 27.3 195 44.4 35.7 124 WILLOW CREEK 8380 41.5 17.9 232 57.7 41.9 138 ----- ----- Basin wide percent of average 237 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 32.8 22.6 145 36.1 26.5 136 BLACK BEAR 8170 51.2 30.2 170 60.7 49.7 122 CANYON 7870 13.4 2.9 462 25.8 20.1 128 FISHER CREEK 9100 53.3 32.3 165 55.3 46.0 120 MADISON PLATEAU 7750 29.3 12.3 238 43.8 33.7 130 NORTHEAST ENTRANCE 7350 .5 .7 71* 22.7 17.1 133 PARKER PEAK 9400 39.0 20.8 188 40.0 22.6 177 SYLVAN LAKE 8420 28.2 14.5 194 40.1 28.3 142 THUMB DIVIDE 7980 15.3 4.3 356 29.5 24.4 121 TWO OCEAN PLATEAU 9240 53.2 27.3 195 44.4 35.7 124 WHISKEY CREEK 6800 12.5 3.2 391 32.8 26.8 122 WHITE MILL 8700 35.1 20.4 172 39.8 34.6 115 WOLVERINE 7650 2.8 .4 700* 21.1 17.9 118 ----- ----- Basin wide percent of average 191 128 WIND RIVER BURROUGHS CREEK 8750 19.8 5.5 360 27.3 22.1 124 CASTLE CREEK 8400 .0 -M * 13.8 -M * COLD SPRINGS 9630 9.6 1.2 800 18.2 16.7 109 DEER PARK 9700 23.2 12.0 193 31.6 30.4 104 HOBBS PARK 10100 24.2 12.3 197 25.3 20.5 123 LITTLE WARM 9370 15.6 3.2 488 21.0 19.6 107 SOUTH PASS 9040 18.9 8.4 225 23.6 25.6 92 ST. LAWRENCE ALT 8620 .9 .9 100 17.6 14.8 119 TOGWOTEE PASS 9580 41.4 24.1 172 44.7 32.2 139 TOWNSEND CREEK 8700 6.7 2.5 268 20.1 18.4 109 ----- ----- Basin wide percent of average 229 115 BIGHORN BASIN BALD MTN. 9380 39.1 19.2 204 32.4 24.8 131 BEAR TRAP MEADOW 8200 7.6 .1 7600* 17.9 13.7 131 BLACKWATER 9780 40.5 27.0 150 39.5 28.2 140 BONE SPRINGS DIV 9350 31.9 11.4 280 28.4 21.7 131 EVENING STAR 9200 40.1 28.9 139 49.1 33.7 146 GRAVE SPRINGS 8550 11.9 2.7 441 19.1 15.7 122 KIRWIN 9550 17.9 7.5 239 23.1 17.0 136 MARQUETTE 8760 12.6 -M * 18.9 17.4 109 MIDDLE POWDER 7760 12.3 5.0 246 20.5 18.7 110 OWL CREEK 8975 1.0 .9 111 13.3 10.7 124 POWDER RIVER PASS 9480 22.1 3.6 614 28.9 19.0 152 SHELL CREEK 9580 27.5 12.8 215 27.5 20.0 138 SYLVAN LAKE 8420 28.2 14.5 194 40.1 28.3 142 SYLVAN ROAD 7120 .0 .3 0* 29.9 22.9 131 TIMBER CREEK 7950 2.4 1.1 218 14.9 13.8 108 YOUNTS PEAK 8350 20.1 10.0 201 24.6 21.6 114 ----- ----- Basin wide percent of average 209 131 SHOSHONE RIVER BLACKWATER 9780 40.5 27.0 150 39.5 28.2 140 EVENING STAR 9200 40.1 28.9 139 49.1 33.7 146 KIRWIN 9550 17.9 7.5 239 23.1 17.0 136 MARQUETTE 8760 12.6 -M * 18.9 17.4 109 SYLVAN LAKE 8420 28.2 14.5 194 40.1 28.3 142 SYLVAN ROAD 7120 .0 .3 0* 29.9 22.9 131 YOUNTS PEAK 8350 20.1 10.0 201 24.6 21.6 114 ----- ----- Basin wide percent of average 166 133 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.6 .1 7600* 17.9 13.7 131 BIG GOOSE 7990 13.2 5.4 244 22.9 16.0 143 BONE SPRINGS DIV 9350 31.9 11.4 280 28.4 21.7 131 BURGESS JUNCTION 7880 15.1 5.1 296 24.5 18.1 135 CLOUD PEAK RESERVOIR 9860 25.7 10.5 245 27.7 21.1 131 DOME LAKE 8880 19.6 4.9 400 25.2 20.1 125 GRAVE SPRINGS 8550 11.9 2.7 441 19.1 15.7 122 HANSEN SAWMILL 8360 6.9 .5 1380* 17.4 13.6 128 LITTLE GOOSE 8870 17.3 -M * 26.7 -M * MIDDLE POWDER 7760 12.3 5.0 246 20.5 18.7 110 POWDER RIVER PASS 9480 22.1 3.6 614 28.9 19.0 152 SOLDIER PARK 8720 9.7 -M * 18.2 -M * SUCKER CREEK 8880 23.1 5.6 413 30.2 21.0 144 TIE CREEK 6870 3.0 .0 * 23.3 16.7 140 ----- ----- Basin wide percent of average 351 133 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 27.4 17.3 158 COLE CANYON 5910 .0 .0 100* 23.3 12.4 188 NORTH RAPID CREEK 6130 .0 .0 100* 23.4 13.6 172 ----- ----- Basin wide percent of average * 171 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.4 3.8 747 46.2 26.4 175 COLUMBINE 9160 28.5 4.6 620 48.3 31.8 152 DIVIDE PEAK 8880 25.1 6.0 418 40.8 27.1 151 ELK RIVER 8700 18.1 2.4 754 37.0 25.6 145 JOE WRIGHT 10120 52.1 19.7 264 53.1 34.2 155 NORTH FRENCH CREEK 10130 64.8 27.5 236 -M 33.7 * OLD BATTLE 10000 59.0 29.2 202 65.9 43.7 151 SAGE CREEK BASIN 7850 .0 3.5 0 25.8 15.7 164 SOUTH BRUSH CREEK 8440 14.4 2.8 514 33.4 23.2 144 TOWER 10500 79.3 46.4 171 70.2 49.4 142 WEBBER SPRINGS 9250 31.5 9.7 325 50.2 34.2 147 WILLOW CREEK PASS 9540 25.6 5.4 474 28.8 18.3 157 ----- ----- Basin wide percent of average 265 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 15.1 * 46.6 30.6 152 CASPER MTN. 7900 6.2 6.0 103 22.7 23.4 97 DEADMAN HILL 10220 32.0 13.7 234 34.6 24.2 143 DEER PARK 9700 23.2 12.0 193 31.6 30.4 104 LAPRELE CREEK 8375 5.8 1.4 414 21.5 19.6 110 RENO HILL 8400 13.6 4.9 278 26.3 24.2 109 ROACH 9700 24.9 8.0 311 35.2 25.9 136 SAND LAKE 10050 52.9 29.6 179 52.4 33.6 156 SOUTH PASS 9040 18.9 8.4 225 23.6 25.6 92 WINDY PEAK 7900 .0 .4 0* 19.2 16.5 116 ----- ----- Basin wide percent of average 210 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.2 20.6 122 DIVIDE PEAK 8880 25.1 6.0 418 40.8 27.1 151 OLD BATTLE 10000 59.0 29.2 202 65.9 43.7 151 SANDSTONE RS 8150 10.0 .8 1250* 36.7 24.4 150 WHISKEY PARK 8950 -M 18.0 * 58.2 37.3 156 ----- ----- Basin wide percent of average 261* 148 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.7 3.8 334 22.1 18.2 121 BLIND BULL SUM 8650 43.1 20.3 212 31.4 27.7 113 EAST RIM DIVIDE 7930 .1 3.9 3 19.1 15.7 122 ELKHART PARK G.S. 9400 13.6 5.2 262 19.5 18.6 105 GROS VENTRE SUMMIT 8750 16.8 5.7 295 23.1 17.3 134 GUNSIGHT PASS 9820 -M -M * 27.3 -M * KENDALL R.S. 7740 3.8 .0 * 22.7 18.3 124 LOOMIS PARK 8240 14.8 4.6 322 29.9 22.1 135 NEW FORK LAKE 8340 4.3 .0 * 16.3 15.5 105 POCKET CREEK 9360 13.2 -M * 20.9 -M * SNIDER BASIN 8060 10.7 2.0 535 25.6 20.2 127 SPRING CREEK DIVIDE 9000 41.8 18.3 228 43.0 32.7 131 TRIPLE PEAK 8500 32.1 8.7 369 45.7 31.5 145 ----- ----- Basin wide percent of average 267 125 LOWER GREEN RIVER HAMS FORK 7840 1.2 .0 * 22.0 16.7 132 HEWINTA 9519 11.1 1.3 854 27.2 19.9 137 HICKERSON PARK 9145 .0 .2 0* 17.0 12.3 138 HOLE-IN-ROCK 9150 .3 .2 150* 19.0 11.9 160 INDIAN CREEK 9425 37.2 17.7 210 36.7 32.1 114 KELLEY R.S. 8180 16.7 3.8 439 32.3 25.8 125 STEEL CREEK PARK 10200 28.3 14.1 201 31.7 22.8 139 ----- ----- Basin wide percent of average 254 131 UPPER BEAR RIVER BUG LAKE 7950 29.8 4.6 648 39.9 24.8 161 HAYDEN FORK 9212 17.6 2.7 652 41.7 28.0 149 KELLEY R.S. 8180 16.7 3.8 439 32.3 25.8 125 LILY LAKE 9156 22.0 2.5 880 32.8 23.7 138 MONTE CRISTO 8960 47.2 15.7 301 51.5 33.6 153 SALT RIVER SUMMIT 7760 9.7 .0 * 28.7 23.8 121 TRIAL LAKE 9992 51.2 17.4 294 46.9 32.8 143 ----- ----- Basin wide percent of average 416 142 ----------------------------------------------------------------------------- -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.