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 SUNDAY: MAY 29 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.4 .0 * 35.6 26.8 133 COTTONWOOD CREEK 7670 29.4 6.7 439 49.8 35.5 140 GRAND TARGHEE 9260 68.8 -M * -M -M * GRANITE CREEK 6770 13.3 2.1 633 33.5 24.7 136 GRASSY LAKE 7265 35.5 16.6 214 56.7 44.7 127 GROS VENTRE SUMMIT 8750 15.9 4.9 324 23.1 17.4 133 GUNSIGHT PASS 9820 -M -M * 27.3 -M * LEWIS LAKE DIVIDE 7850 44.2 20.2 219 50.2 45.1 111 PHILLIPS BENCH 8200 37.4 15.9 235 47.3 36.3 130 SALT RIVER SUMMIT 7760 9.3 .0 * 29.0 23.9 121 SNAKE RIVER STATION 6920 -M .0 * 36.4 28.1 130 SPRING CREEK DIVIDE 9000 42.2 17.0 248 43.8 32.9 133 THUMB DIVIDE 7980 15.2 3.4 447 29.9 24.6 122 TOGWOTEE PASS 9580 41.3 23.3 177 44.9 32.4 139 TWO OCEAN PLATEAU 9240 53.3 26.5 201 44.8 36.0 124 WILLOW CREEK 8380 41.2 16.5 250 58.1 42.2 138 ----- ----- Basin wide percent of average 254 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 33.5 21.6 155 36.3 26.7 136 BLACK BEAR 8170 52.1 28.4 183 61.7 49.9 124 CANYON 7870 -M 2.3 * 26.8 20.3 132 FISHER CREEK 9100 54.0 31.3 173 55.5 46.3 120 MADISON PLATEAU 7750 29.8 10.9 273 44.4 33.9 131 NORTHEAST ENTRANCE 7350 .3 .6 50* 22.9 17.3 132 PARKER PEAK 9400 40.4 19.9 203 41.3 22.9 180 SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145 THUMB DIVIDE 7980 15.2 3.4 447 29.9 24.6 122 TWO OCEAN PLATEAU 9240 53.3 26.5 201 44.8 36.0 124 WHISKEY CREEK 6800 12.6 2.2 573 33.1 27.0 123 WHITE MILL 8700 35.1 19.4 181 40.3 34.8 116 WOLVERINE 7650 -M .1 * 21.7 18.0 121 ----- ----- Basin wide percent of average 199 130 WIND RIVER BURROUGHS CREEK 8750 19.3 4.6 420 27.3 22.3 122 CASTLE CREEK 8400 .0 -M * 13.8 -M * COLD SPRINGS 9630 9.5 1.1 864 18.5 16.8 110 DEER PARK 9700 23.4 10.1 232 31.7 30.6 104 HOBBS PARK 10100 24.6 11.3 218 25.6 20.7 124 LITTLE WARM 9370 14.9 2.7 552 21.1 19.8 107 SOUTH PASS 9040 18.8 7.9 238 23.7 25.8 92 ST. LAWRENCE ALT 8620 .6 .7 86* 18.1 15.0 121 TOGWOTEE PASS 9580 41.3 23.3 177 44.9 32.4 139 TOWNSEND CREEK 8700 6.4 2.2 291 20.2 18.6 109 ----- ----- Basin wide percent of average 249 114 BIGHORN BASIN BALD MTN. 9380 39.1 18.0 217 32.5 25.0 130 BEAR TRAP MEADOW 8200 6.3 .0 * 18.0 13.9 129 BLACKWATER 9780 41.9 26.1 161 40.8 28.5 143 BONE SPRINGS DIV 9350 31.6 10.2 310 28.4 22.0 129 EVENING STAR 9200 41.9 28.0 150 51.0 34.0 150 GRAVE SPRINGS 8550 11.0 2.4 458 19.2 15.9 121 KIRWIN 9550 18.0 6.6 273 23.3 17.2 135 MARQUETTE 8760 13.0 -M * 19.1 17.6 109 MIDDLE POWDER 7760 11.2 4.0 280 20.5 18.8 109 OWL CREEK 8975 .4 .7 57 13.4 10.8 124 POWDER RIVER PASS 9480 21.9 3.1 706 29.2 19.3 151 SHELL CREEK 9580 27.9 12.0 233 27.8 20.2 138 SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145 SYLVAN ROAD 7120 .0 .2 0* 30.9 23.0 134 TIMBER CREEK 7950 .9 .8 113 15.1 14.1 107 YOUNTS PEAK 8350 19.9 8.8 226 24.7 21.8 113 ----- ----- Basin wide percent of average 225 132 SHOSHONE RIVER BLACKWATER 9780 41.9 26.1 161 40.8 28.5 143 EVENING STAR 9200 41.9 28.0 150 51.0 34.0 150 KIRWIN 9550 18.0 6.6 273 23.3 17.2 135 MARQUETTE 8760 13.0 -M * 19.1 17.6 109 SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145 SYLVAN ROAD 7120 .0 .2 0* 30.9 23.0 134 YOUNTS PEAK 8350 19.9 8.8 226 24.7 21.8 113 ----- ----- Basin wide percent of average 175 136 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.3 .0 * 18.0 13.9 129 BIG GOOSE 7990 12.7 4.4 289 22.9 16.2 141 BONE SPRINGS DIV 9350 31.6 10.2 310 28.4 22.0 129 BURGESS JUNCTION 7880 14.8 4.1 361 24.7 18.3 135 CLOUD PEAK RESERVOIR 9860 25.8 9.3 277 27.9 21.3 131 DOME LAKE 8880 19.5 4.2 464 25.4 20.3 125 GRAVE SPRINGS 8550 11.0 2.4 458 19.2 15.9 121 HANSEN SAWMILL 8360 5.6 .4 1400* 17.7 13.8 128 LITTLE GOOSE 8870 17.0 -M * 26.7 -M * MIDDLE POWDER 7760 11.2 4.0 280 20.5 18.8 109 POWDER RIVER PASS 9480 21.9 3.1 706 29.2 19.3 151 SOLDIER PARK 8720 9.2 -M * 18.4 -M * SUCKER CREEK 8880 22.8 4.8 475 30.2 21.2 142 TIE CREEK 6870 2.2 .0 * 23.4 16.9 138 ----- ----- Basin wide percent of average 395 132 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 27.5 17.5 157 COLE CANYON 5910 .2 .0 * 23.5 12.6 187 NORTH RAPID CREEK 6130 .0 .0 100* 23.4 13.8 170 ----- ----- Basin wide percent of average * 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.4 2.8 1014 46.7 26.6 176 COLUMBINE 9160 26.9 3.4 791 48.6 32.0 152 DIVIDE PEAK 8880 24.0 5.0 480 41.1 27.2 151 ELK RIVER 8700 18.2 1.9 958* 37.8 25.8 147 JOE WRIGHT 10120 52.2 18.7 279 53.5 34.5 155 NORTH FRENCH CREEK 10130 65.3 26.1 250 -M 34.0 * OLD BATTLE 10000 -M 27.8 * 66.7 43.9 152 SAGE CREEK BASIN 7850 .0 2.9 0 25.9 15.8 164 SOUTH BRUSH CREEK 8440 -M 2.3 * 33.7 23.4 144 TOWER 10500 80.1 45.0 178 70.7 49.6 143 WEBBER SPRINGS 9250 30.9 8.4 368 50.7 34.4 147 WILLOW CREEK PASS 9540 24.6 4.4 559 28.9 18.5 156 ----- ----- Basin wide percent of average 296 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 13.7 * 46.9 30.8 152 CASPER MTN. 7900 5.8 5.2 112 23.1 23.7 97 DEADMAN HILL 10220 32.0 12.7 252 34.9 24.4 143 DEER PARK 9700 23.4 10.1 232 31.7 30.6 104 LAPRELE CREEK 8375 5.4 1.1 491 22.1 19.8 112 RENO HILL 8400 13.2 4.3 307 26.9 24.4 110 ROACH 9700 25.0 7.2 347 35.7 26.1 137 SAND LAKE 10050 53.2 28.1 189 52.8 33.9 156 SOUTH PASS 9040 18.8 7.9 238 23.7 25.8 92 WINDY PEAK 7900 .4 .2 200* 19.8 16.8 118 ----- ----- Basin wide percent of average 231 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.6 20.8 123 DIVIDE PEAK 8880 24.0 5.0 480 41.1 27.2 151 OLD BATTLE 10000 -M 27.8 * 66.7 43.9 152 SANDSTONE RS 8150 9.4 .5 1880* 37.3 24.6 152 WHISKEY PARK 8950 -M 16.2 * 59.2 37.5 158 ----- ----- Basin wide percent of average 607* 149 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.8 2.9 441 22.3 18.4 121 BLIND BULL SUM 8650 43.1 19.4 222 31.8 27.9 114 EAST RIM DIVIDE 7930 .1 3.0 3 19.2 15.9 121 ELKHART PARK G.S. 9400 13.1 4.5 291 19.6 18.8 104 GROS VENTRE SUMMIT 8750 15.9 4.9 324 23.1 17.4 133 GUNSIGHT PASS 9820 -M -M * 27.3 -M * KENDALL R.S. 7740 2.7 .0 * 22.8 18.4 124 LOOMIS PARK 8240 14.2 3.7 384 29.9 22.3 134 NEW FORK LAKE 8340 3.3 .0 * 16.3 15.7 104 POCKET CREEK 9360 13.5 -M * 21.1 -M * SNIDER BASIN 8060 10.8 1.0 1080* 26.1 20.3 129 SPRING CREEK DIVIDE 9000 42.2 17.0 248 43.8 32.9 133 TRIPLE PEAK 8500 32.7 7.2 454 46.2 31.7 146 ----- ----- Basin wide percent of average 300 126 LOWER GREEN RIVER HAMS FORK 7840 .5 .0 * 22.3 16.8 133 HEWINTA 9519 10.5 1.0 1050* 27.6 20.1 137 HICKERSON PARK 9145 .1 .1 100* 17.5 12.4 141 HOLE-IN-ROCK 9150 .4 .1 400* 19.3 12.0 161 INDIAN CREEK 9425 37.9 16.5 230 37.2 32.2 116 KELLEY R.S. 8180 16.8 2.8 600 32.7 26.0 126 STEEL CREEK PARK 10200 28.4 13.2 215 32.1 22.9 140 ----- ----- Basin wide percent of average 281* 133 UPPER BEAR RIVER BUG LAKE 7950 29.4 3.7 795 40.6 24.9 163 HAYDEN FORK 9212 16.6 2.1 790 42.0 28.2 149 KELLEY R.S. 8180 16.8 2.8 600 32.7 26.0 126 LILY LAKE 9156 21.4 2.1 1019 33.2 23.9 139 MONTE CRISTO 8960 47.8 14.5 330 52.1 33.8 154 SALT RIVER SUMMIT 7760 9.3 .0 * 29.0 23.9 121 TRIAL LAKE 9992 51.4 16.3 315 47.2 33.0 143 ----- ----- Basin wide percent of average 464 143 ----------------------------------------------------------------------------- -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.