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: MAY 25 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.1 1.9 689 35.2 26.5 133 COTTONWOOD CREEK 7670 31.0 8.9 348 49.1 35.1 140 GRAND TARGHEE 9260 71.3 -M * -M -M * GRANITE CREEK 6770 15.7 3.8 413 33.5 24.4 137 GRASSY LAKE 7265 37.1 19.7 188 56.1 44.2 127 GROS VENTRE SUMMIT 8750 17.5 6.4 273 23.1 17.1 135 GUNSIGHT PASS 9820 -M -M * 27.2 -M * LEWIS LAKE DIVIDE 7850 47.0 23.0 204 49.5 44.6 111 PHILLIPS BENCH 8200 38.6 18.4 210 46.8 35.9 130 SALT RIVER SUMMIT 7760 11.2 .0 * 28.7 23.6 122 SNAKE RIVER STATION 6920 -M .5 * 36.2 27.8 130 SPRING CREEK DIVIDE 9000 42.4 19.5 217 43.0 32.5 132 THUMB DIVIDE 7980 16.6 5.2 319 29.5 24.3 121 TOGWOTEE PASS 9580 41.6 24.8 168 44.4 32.0 139 TWO OCEAN PLATEAU 9240 53.0 28.0 189 44.1 35.5 124 WILLOW CREEK 8380 42.4 19.3 220 57.5 41.7 138 ----- ----- Basin wide percent of average 228 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 32.6 23.2 141 35.4 26.3 135 BLACK BEAR 8170 51.1 31.5 162 60.2 49.4 122 CANYON 7870 13.6 3.5 389 25.3 19.9 127 FISHER CREEK 9100 52.8 33.0 160 54.7 45.7 120 MADISON PLATEAU 7750 29.1 13.6 214 42.9 33.4 128 NORTHEAST ENTRANCE 7350 1.9 .9 211* 22.4 16.9 133 PARKER PEAK 9400 39.0 21.5 181 39.3 22.4 175 SYLVAN LAKE 8420 28.5 15.5 184 39.9 28.0 143 THUMB DIVIDE 7980 16.6 5.2 319 29.5 24.3 121 TWO OCEAN PLATEAU 9240 53.0 28.0 189 44.1 35.5 124 WHISKEY CREEK 6800 13.1 4.5 291 32.0 26.6 120 WHITE MILL 8700 35.5 21.3 167 39.3 34.3 115 WOLVERINE 7650 3.5 .6 583* 20.9 17.7 118 ----- ----- Basin wide percent of average 183 128 WIND RIVER BURROUGHS CREEK 8750 20.7 6.3 329 27.1 21.9 124 CASTLE CREEK 8400 .0 -M * 13.8 -M * COLD SPRINGS 9630 10.4 1.3 800 18.2 16.5 110 DEER PARK 9700 23.6 13.2 179 31.5 30.2 104 HOBBS PARK 10100 24.3 13.2 184 25.3 20.2 125 LITTLE WARM 9370 16.3 3.9 418 21.0 19.4 108 SOUTH PASS 9040 19.8 9.2 215 23.4 25.4 92 ST. LAWRENCE ALT 8620 2.4 1.0 240 17.6 14.6 121 TOGWOTEE PASS 9580 41.6 24.8 168 44.4 32.0 139 TOWNSEND CREEK 8700 7.8 2.8 279 20.1 18.2 110 ----- ----- Basin wide percent of average 220 115 BIGHORN BASIN BALD MTN. 9380 39.4 19.9 198 32.3 24.6 131 BEAR TRAP MEADOW 8200 8.7 .1 8700* 17.5 13.5 130 BLACKWATER 9780 40.7 27.7 147 39.2 28.0 140 BONE SPRINGS DIV 9350 32.1 12.2 263 28.2 21.5 131 EVENING STAR 9200 40.0 29.6 135 48.9 33.4 146 GRAVE SPRINGS 8550 13.0 2.9 448 19.0 15.5 123 KIRWIN 9550 18.8 8.2 229 23.1 16.8 138 MARQUETTE 8760 13.9 -M * 18.8 17.1 110 MIDDLE POWDER 7760 14.1 6.0 235 20.3 18.5 110 OWL CREEK 8975 2.9 1.1 264 13.2 10.5 126 POWDER RIVER PASS 9480 22.2 4.3 516 28.6 18.8 152 SHELL CREEK 9580 27.6 13.4 206 27.3 19.8 138 SYLVAN LAKE 8420 28.5 15.5 184 39.9 28.0 143 SYLVAN ROAD 7120 .0 .4 0* 29.7 22.7 131 TIMBER CREEK 7950 3.7 1.1 336 14.9 13.6 110 YOUNTS PEAK 8350 21.0 10.8 194 24.6 21.3 115 ----- ----- Basin wide percent of average 204 131 SHOSHONE RIVER BLACKWATER 9780 40.7 27.7 147 39.2 28.0 140 EVENING STAR 9200 40.0 29.6 135 48.9 33.4 146 KIRWIN 9550 18.8 8.2 229 23.1 16.8 138 MARQUETTE 8760 13.9 -M * 18.8 17.1 110 SYLVAN LAKE 8420 28.5 15.5 184 39.9 28.0 143 SYLVAN ROAD 7120 .0 .4 0* 29.7 22.7 131 YOUNTS PEAK 8350 21.0 10.8 194 24.6 21.3 115 ----- ----- Basin wide percent of average 162 134 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.7 .1 8700* 17.5 13.5 130 BIG GOOSE 7990 14.2 6.2 229 22.5 15.8 142 BONE SPRINGS DIV 9350 32.1 12.2 263 28.2 21.5 131 BURGESS JUNCTION 7880 16.0 5.9 271 24.4 17.9 136 CLOUD PEAK RESERVOIR 9860 25.2 11.2 225 27.0 20.8 130 DOME LAKE 8880 20.4 5.7 358 24.8 19.9 125 GRAVE SPRINGS 8550 13.0 2.9 448 19.0 15.5 123 HANSEN SAWMILL 8360 8.0 .7 1143 16.9 13.4 126 LITTLE GOOSE 8870 18.0 -M * 26.4 -M * MIDDLE POWDER 7760 14.1 6.0 235 20.3 18.5 110 POWDER RIVER PASS 9480 22.2 4.3 516 28.6 18.8 152 SOLDIER PARK 8720 10.3 -M * 17.6 -M * SUCKER CREEK 8880 23.9 6.5 368 29.9 20.8 144 TIE CREEK 6870 4.5 .0 * 23.1 16.5 140 ----- ----- Basin wide percent of average 328 133 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 26.9 17.1 157 COLE CANYON 5910 .0 .0 100* 23.1 12.2 189 NORTH RAPID CREEK 6130 .0 .0 100* 23.3 13.5 173 ----- ----- Basin wide percent of average * 171 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.9 4.9 590 46.1 26.3 175 COLUMBINE 9160 30.4 5.8 524 48.3 31.7 152 DIVIDE PEAK 8880 26.8 7.0 383 40.8 26.9 152 ELK RIVER 8700 20.0 3.1 645 37.0 25.4 146 JOE WRIGHT 10120 52.4 20.6 254 52.9 34.0 156 NORTH FRENCH CREEK 10130 64.6 28.7 225 -M 33.4 * OLD BATTLE 10000 58.7 30.5 192 65.8 43.5 151 SAGE CREEK BASIN 7850 .0 4.1 0 25.8 15.6 165 SOUTH BRUSH CREEK 8440 15.7 3.3 476 33.5 23.0 146 TOWER 10500 79.1 47.6 166 69.4 49.1 141 WEBBER SPRINGS 9250 32.9 11.1 296 50.1 34.0 147 WILLOW CREEK PASS 9540 25.9 6.4 405 28.7 18.1 159 ----- ----- Basin wide percent of average 252 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 41.1 16.6 248 46.5 30.4 153 CASPER MTN. 7900 7.8 6.8 115 22.5 23.2 97 DEADMAN HILL 10220 32.1 14.6 220 34.6 24.0 144 DEER PARK 9700 23.6 13.2 179 31.5 30.2 104 LAPRELE CREEK 8375 7.1 1.7 418 21.5 19.4 111 RENO HILL 8400 14.8 5.6 264 26.3 23.9 110 ROACH 9700 25.8 8.9 290 35.2 25.6 138 SAND LAKE 10050 53.1 30.9 172 52.3 33.4 157 SOUTH PASS 9040 19.8 9.2 215 23.4 25.4 92 WINDY PEAK 7900 .6 .5 120* 19.2 16.3 118 ----- ----- Basin wide percent of average 209 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.2 20.5 123 DIVIDE PEAK 8880 26.8 7.0 383 40.8 26.9 152 OLD BATTLE 10000 58.7 30.5 192 65.8 43.5 151 SANDSTONE RS 8150 11.8 1.1 1073* 36.8 24.3 151 WHISKEY PARK 8950 -M 19.7 * 58.1 37.1 157 ----- ----- Basin wide percent of average 252* 149 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.8 4.7 294 22.1 18.0 123 BLIND BULL SUM 8650 44.0 21.3 207 31.3 27.5 114 EAST RIM DIVIDE 7930 2.0 4.9 41 19.2 15.6 123 ELKHART PARK G.S. 9400 14.6 6.0 243 19.5 18.4 106 GROS VENTRE SUMMIT 8750 17.5 6.4 273 23.1 17.1 135 GUNSIGHT PASS 9820 -M -M * 27.2 -M * KENDALL R.S. 7740 5.8 .0 * 22.8 18.2 125 LOOMIS PARK 8240 15.8 5.5 287 29.6 22.0 135 NEW FORK LAKE 8340 5.9 .0 * 16.3 15.4 106 POCKET CREEK 9360 13.9 -M * 21.0 -M * SNIDER BASIN 8060 12.8 3.0 427 25.7 20.0 129 SPRING CREEK DIVIDE 9000 42.4 19.5 217 43.0 32.5 132 TRIPLE PEAK 8500 33.7 10.2 330 45.6 31.3 146 ----- ----- Basin wide percent of average 256 126 LOWER GREEN RIVER HAMS FORK 7840 3.6 .0 * 21.8 16.5 132 HEWINTA 9519 12.8 1.6 800 27.2 19.8 137 HICKERSON PARK 9145 .0 .4 0* 17.0 12.1 140 HOLE-IN-ROCK 9150 1.8 .3 600* 19.0 11.7 162 INDIAN CREEK 9425 37.7 18.8 201 36.6 31.9 115 KELLEY R.S. 8180 17.7 4.7 377 32.3 25.7 126 STEEL CREEK PARK 10200 28.7 14.9 193 31.7 22.6 140 ----- ----- Basin wide percent of average 251 132 UPPER BEAR RIVER BUG LAKE 7950 30.9 5.5 562 39.9 24.6 162 HAYDEN FORK 9212 19.7 3.4 579 41.7 27.8 150 KELLEY R.S. 8180 17.7 4.7 377 32.3 25.7 126 LILY LAKE 9156 23.4 3.1 755 32.9 23.5 140 MONTE CRISTO 8960 48.0 17.0 282 51.4 33.4 154 SALT RIVER SUMMIT 7760 11.2 .0 * 28.7 23.6 122 TRIAL LAKE 9992 51.6 18.5 279 46.9 32.5 144 ----- ----- Basin wide percent of average 388 143 ----------------------------------------------------------------------------- -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.