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 28 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.2 .5 2240* 35.6 26.8 133 COTTONWOOD CREEK 7670 30.0 7.3 411 49.7 35.4 140 GRAND TARGHEE 9260 69.5 -M * -M -M * GRANITE CREEK 6770 13.8 2.5 552 33.6 24.6 137 GRASSY LAKE 7265 35.4 17.4 203 56.5 44.6 127 GROS VENTRE SUMMIT 8750 16.4 5.3 309 23.1 17.4 133 GUNSIGHT PASS 9820 -M -M * 27.3 -M * LEWIS LAKE DIVIDE 7850 44.8 20.9 214 50.0 45.0 111 PHILLIPS BENCH 8200 37.8 16.5 229 47.3 36.2 131 SALT RIVER SUMMIT 7760 9.6 .0 * 28.9 23.8 121 SNAKE RIVER STATION 6920 -M .0 * 36.4 28.1 130 SPRING CREEK DIVIDE 9000 42.1 17.6 239 43.6 32.8 133 THUMB DIVIDE 7980 15.3 3.8 403 29.8 24.5 122 TOGWOTEE PASS 9580 41.4 23.7 175 44.8 32.3 139 TWO OCEAN PLATEAU 9240 53.3 26.9 198 44.6 35.8 125 WILLOW CREEK 8380 41.4 17.2 241 58.1 42.1 138 ----- ----- Basin wide percent of average 246 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 33.3 22.1 151 36.2 26.6 136 BLACK BEAR 8170 51.6 29.4 176 61.2 49.8 123 CANYON 7870 -M 2.6 * 26.5 20.2 131 FISHER CREEK 9100 54.1 31.8 170 55.5 46.1 120 MADISON PLATEAU 7750 29.6 11.6 255 44.2 33.8 131 NORTHEAST ENTRANCE 7350 .5 .7 71* 22.8 17.2 133 PARKER PEAK 9400 39.8 20.4 195 40.9 22.7 180 SYLVAN LAKE 8420 -M 14.0 * 40.9 28.4 144 THUMB DIVIDE 7980 15.3 3.8 403 29.8 24.5 122 TWO OCEAN PLATEAU 9240 53.3 26.9 198 44.6 35.8 125 WHISKEY CREEK 6800 12.6 2.7 467 33.0 26.9 123 WHITE MILL 8700 35.1 19.9 176 40.0 34.7 115 WOLVERINE 7650 -M .2 * 21.4 17.9 120 ----- ----- Basin wide percent of average 192 129 WIND RIVER BURROUGHS CREEK 8750 19.7 5.1 386 27.3 22.2 123 CASTLE CREEK 8400 .0 -M * 13.8 -M * COLD SPRINGS 9630 9.4 1.2 783 18.3 16.7 110 DEER PARK 9700 23.3 11.3 206 31.6 30.5 104 HOBBS PARK 10100 24.2 11.8 205 25.3 20.6 123 LITTLE WARM 9370 15.3 3.0 510 21.0 19.7 107 SOUTH PASS 9040 18.7 8.3 225 23.6 25.7 92 ST. LAWRENCE ALT 8620 .3 .9 33 17.6 14.9 118 TOGWOTEE PASS 9580 41.4 23.7 175 44.8 32.3 139 TOWNSEND CREEK 8700 6.4 2.4 267 20.1 18.5 109 ----- ----- Basin wide percent of average 234 114 BIGHORN BASIN BALD MTN. 9380 39.0 18.6 210 32.4 24.9 130 BEAR TRAP MEADOW 8200 7.1 .0 * 17.9 13.8 130 BLACKWATER 9780 41.6 26.7 156 40.3 28.4 142 BONE SPRINGS DIV 9350 31.7 10.8 294 28.3 21.9 129 EVENING STAR 9200 40.9 28.5 144 50.3 33.8 149 GRAVE SPRINGS 8550 11.7 2.5 468 19.1 15.8 121 KIRWIN 9550 17.9 7.1 252 23.1 17.1 135 MARQUETTE 8760 12.8 -M * 19.0 17.5 109 MIDDLE POWDER 7760 12.0 4.5 267 20.5 18.7 110 OWL CREEK 8975 .5 .8 63 13.3 10.7 124 POWDER RIVER PASS 9480 22.0 3.4 647 29.0 19.2 151 SHELL CREEK 9580 27.7 12.4 223 27.6 20.1 137 SYLVAN LAKE 8420 -M 14.0 * 40.9 28.4 144 SYLVAN ROAD 7120 .5 .3 167* 30.6 23.0 133 TIMBER CREEK 7950 1.3 1.0 130 14.9 14.0 106 YOUNTS PEAK 8350 20.0 9.5 211 24.7 21.7 114 ----- ----- Basin wide percent of average 217 131 SHOSHONE RIVER BLACKWATER 9780 41.6 26.7 156 40.3 28.4 142 EVENING STAR 9200 40.9 28.5 144 50.3 33.8 149 KIRWIN 9550 17.9 7.1 252 23.1 17.1 135 MARQUETTE 8760 12.8 -M * 19.0 17.5 109 SYLVAN LAKE 8420 -M 14.0 * 40.9 28.4 144 SYLVAN ROAD 7120 .5 .3 167* 30.6 23.0 133 YOUNTS PEAK 8350 20.0 9.5 211 24.7 21.7 114 ----- ----- Basin wide percent of average 168 135 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.1 .0 * 17.9 13.8 130 BIG GOOSE 7990 12.9 4.9 263 22.9 16.1 142 BONE SPRINGS DIV 9350 31.7 10.8 294 28.3 21.9 129 BURGESS JUNCTION 7880 14.9 4.7 317 24.5 18.2 135 CLOUD PEAK RESERVOIR 9860 25.8 9.9 261 27.7 21.2 131 DOME LAKE 8880 19.5 4.5 433 25.2 20.2 125 GRAVE SPRINGS 8550 11.7 2.5 468 19.1 15.8 121 HANSEN SAWMILL 8360 6.2 .5 1240* 17.4 13.7 127 LITTLE GOOSE 8870 17.1 -M * 26.7 -M * MIDDLE POWDER 7760 12.0 4.5 267 20.5 18.7 110 POWDER RIVER PASS 9480 22.0 3.4 647 29.0 19.2 151 SOLDIER PARK 8720 9.5 -M * 18.1 -M * SUCKER CREEK 8880 23.0 5.2 442 30.2 21.1 143 TIE CREEK 6870 2.4 .0 * 23.3 16.8 139 ----- ----- Basin wide percent of average 372 132 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 27.4 17.4 157 COLE CANYON 5910 .2 .0 * 23.3 12.5 186 NORTH RAPID CREEK 6130 .0 .0 100* 23.3 13.7 170 ----- ----- Basin wide percent of average * 170 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.4 3.3 861 46.4 26.5 175 COLUMBINE 9160 27.9 4.0 698 48.5 31.9 152 DIVIDE PEAK 8880 24.2 5.5 440 40.8 27.2 150 ELK RIVER 8700 18.2 2.2 827 37.4 25.7 146 JOE WRIGHT 10120 52.3 19.2 272 53.5 34.4 156 NORTH FRENCH CREEK 10130 64.6 26.8 241 -M 33.8 * OLD BATTLE 10000 59.3 28.5 208 66.2 43.8 151 SAGE CREEK BASIN 7850 .0 3.2 0 25.8 15.8 163 SOUTH BRUSH CREEK 8440 -M 2.5 * 33.5 23.3 144 TOWER 10500 79.7 45.7 174 70.2 49.5 142 WEBBER SPRINGS 9250 30.7 9.0 341 50.4 34.3 147 WILLOW CREEK PASS 9540 25.2 4.9 514 28.8 18.4 157 ----- ----- Basin wide percent of average 270 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 14.4 * 46.6 30.7 152 CASPER MTN. 7900 6.0 5.6 107 22.7 23.5 97 DEADMAN HILL 10220 32.0 13.2 242 34.8 24.3 143 DEER PARK 9700 23.3 11.3 206 31.6 30.5 104 LAPRELE CREEK 8375 5.3 1.2 442 21.5 19.7 109 RENO HILL 8400 13.3 4.6 289 26.3 24.3 108 ROACH 9700 24.8 7.6 326 35.4 26.0 136 SAND LAKE 10050 52.9 28.9 183 52.5 33.8 155 SOUTH PASS 9040 18.7 8.3 225 23.6 25.7 92 WINDY PEAK 7900 .0 .3 0* 19.2 16.6 116 ----- ----- Basin wide percent of average 218 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.4 20.7 123 DIVIDE PEAK 8880 24.2 5.5 440 40.8 27.2 150 OLD BATTLE 10000 59.3 28.5 208 66.2 43.8 151 SANDSTONE RS 8150 9.3 .6 1550* 37.0 24.5 151 WHISKEY PARK 8950 -M 17.1 * 58.6 37.4 157 ----- ----- Basin wide percent of average 268* 148 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.7 3.3 385 22.2 18.3 121 BLIND BULL SUM 8650 43.4 19.9 218 31.6 27.8 114 EAST RIM DIVIDE 7930 .0 3.4 0 19.2 15.8 122 ELKHART PARK G.S. 9400 13.3 4.8 277 19.5 18.7 104 GROS VENTRE SUMMIT 8750 16.4 5.3 309 23.1 17.4 133 GUNSIGHT PASS 9820 -M -M * 27.3 -M * KENDALL R.S. 7740 3.1 .0 * 22.8 18.4 124 LOOMIS PARK 8240 14.5 4.2 345 29.9 22.2 135 NEW FORK LAKE 8340 3.6 .0 * 16.3 15.6 104 POCKET CREEK 9360 13.3 -M * 21.0 -M * SNIDER BASIN 8060 10.8 1.5 720 26.0 20.2 129 SPRING CREEK DIVIDE 9000 42.1 17.6 239 43.6 32.8 133 TRIPLE PEAK 8500 32.5 7.9 411 46.0 31.6 146 ----- ----- Basin wide percent of average 283 126 LOWER GREEN RIVER HAMS FORK 7840 .7 .0 * 22.1 16.7 132 HEWINTA 9519 10.4 1.1 945* 27.2 20.0 136 HICKERSON PARK 9145 .0 .2 0* 17.1 12.3 139 HOLE-IN-ROCK 9150 .2 .1 200* 19.1 12.0 159 INDIAN CREEK 9425 37.4 17.1 219 36.9 32.2 115 KELLEY R.S. 8180 16.7 3.3 506 32.5 25.9 125 STEEL CREEK PARK 10200 28.2 13.6 207 31.8 22.9 139 ----- ----- Basin wide percent of average 264* 131 UPPER BEAR RIVER BUG LAKE 7950 29.1 4.1 710 39.9 24.8 161 HAYDEN FORK 9212 16.5 2.4 688 41.7 28.1 148 KELLEY R.S. 8180 16.7 3.3 506 32.5 25.9 125 LILY LAKE 9156 21.4 2.3 930 32.9 23.8 138 MONTE CRISTO 8960 47.0 15.1 311 51.5 33.7 153 SALT RIVER SUMMIT 7760 9.6 .0 * 28.9 23.8 121 TRIAL LAKE 9992 51.2 16.8 305 47.1 32.9 143 ----- ----- Basin wide percent of average 435 142 ----------------------------------------------------------------------------- -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.