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 THURSDAY: MAY 26 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.2 1.4 871* 35.5 26.6 133 COTTONWOOD CREEK 7670 30.0 8.3 361 49.2 35.2 140 GRAND TARGHEE 9260 71.0 -M * -M -M * GRANITE CREEK 6770 14.7 3.4 432 33.5 24.4 137 GRASSY LAKE 7265 36.2 19.0 191 56.2 44.3 127 GROS VENTRE SUMMIT 8750 17.1 6.0 285 23.1 17.2 134 GUNSIGHT PASS 9820 -M -M * 27.2 -M * LEWIS LAKE DIVIDE 7850 46.3 22.3 208 49.9 44.7 112 PHILLIPS BENCH 8200 38.1 17.8 214 47.2 36.0 131 SALT RIVER SUMMIT 7760 10.3 .0 * 28.8 23.7 122 SNAKE RIVER STATION 6920 -M .0 * 36.3 27.9 130 SPRING CREEK DIVIDE 9000 42.5 18.9 225 43.0 32.6 132 THUMB DIVIDE 7980 16.1 4.8 335 29.6 24.3 122 TOGWOTEE PASS 9580 41.5 24.4 170 44.7 32.1 139 TWO OCEAN PLATEAU 9240 53.2 27.7 192 44.2 35.6 124 WILLOW CREEK 8380 42.0 18.6 226 57.6 41.8 138 ----- ----- Basin wide percent of average 232 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 32.1 22.9 140 35.5 26.4 134 BLACK BEAR 8170 50.8 30.9 164 60.2 49.5 122 CANYON 7870 13.2 3.1 426 25.4 20.0 127 FISHER CREEK 9100 52.6 32.7 161 54.7 45.8 119 MADISON PLATEAU 7750 28.9 13.0 222 42.9 33.5 128 NORTHEAST ENTRANCE 7350 .9 .8 113* 22.5 17.0 132 PARKER PEAK 9400 39.1 21.1 185 40.0 22.5 178 SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141 THUMB DIVIDE 7980 16.1 4.8 335 29.6 24.3 122 TWO OCEAN PLATEAU 9240 53.2 27.7 192 44.2 35.6 124 WHISKEY CREEK 6800 12.1 3.9 310 32.1 26.7 120 WHITE MILL 8700 34.8 20.9 167 39.6 34.5 115 WOLVERINE 7650 3.3 .4 825* 21.1 17.8 119 ----- ----- Basin wide percent of average 185 128 WIND RIVER BURROUGHS CREEK 8750 20.3 6.0 338 27.3 22.0 124 CASTLE CREEK 8400 .0 -M * 13.8 -M * COLD SPRINGS 9630 10.2 1.2 850 18.2 16.5 110 DEER PARK 9700 23.4 12.7 184 31.6 30.3 104 HOBBS PARK 10100 24.4 12.8 191 25.3 20.3 125 LITTLE WARM 9370 15.8 3.5 451 21.0 19.5 108 SOUTH PASS 9040 19.4 8.8 220 23.6 25.5 93 ST. LAWRENCE ALT 8620 1.8 1.0 180 17.6 14.7 120 TOGWOTEE PASS 9580 41.5 24.4 170 44.7 32.1 139 TOWNSEND CREEK 8700 7.4 2.6 285 20.1 18.3 110 ----- ----- Basin wide percent of average 225 115 BIGHORN BASIN BALD MTN. 9380 39.2 19.5 201 32.4 24.7 131 BEAR TRAP MEADOW 8200 8.2 .1 8200* 17.9 13.6 132 BLACKWATER 9780 40.5 27.3 148 39.5 28.1 141 BONE SPRINGS DIV 9350 32.4 11.8 275 28.4 21.6 131 EVENING STAR 9200 40.4 29.1 139 48.9 33.5 146 GRAVE SPRINGS 8550 12.6 2.8 450 19.1 15.6 122 KIRWIN 9550 18.5 7.8 237 23.1 16.9 137 MARQUETTE 8760 13.3 -M * 18.9 17.3 109 MIDDLE POWDER 7760 13.1 5.5 238 20.5 18.6 110 OWL CREEK 8975 2.4 1.0 240 13.4 10.6 126 POWDER RIVER PASS 9480 22.3 3.9 572 28.9 18.9 153 SHELL CREEK 9580 27.7 13.1 211 27.5 19.9 138 SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141 SYLVAN ROAD 7120 .0 .3 0* 29.7 22.8 130 TIMBER CREEK 7950 3.3 1.1 300 14.9 13.7 109 YOUNTS PEAK 8350 20.6 10.3 200 24.6 21.5 114 ----- ----- Basin wide percent of average 208 131 SHOSHONE RIVER BLACKWATER 9780 40.5 27.3 148 39.5 28.1 141 EVENING STAR 9200 40.4 29.1 139 48.9 33.5 146 KIRWIN 9550 18.5 7.8 237 23.1 16.9 137 MARQUETTE 8760 13.3 -M * 18.9 17.3 109 SYLVAN LAKE 8420 28.0 15.0 187 39.9 28.2 141 SYLVAN ROAD 7120 .0 .3 0* 29.7 22.8 130 YOUNTS PEAK 8350 20.6 10.3 200 24.6 21.5 114 ----- ----- Basin wide percent of average 165 133 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.2 .1 8200* 17.9 13.6 132 BIG GOOSE 7990 13.8 5.8 238 22.9 15.9 144 BONE SPRINGS DIV 9350 32.4 11.8 275 28.4 21.6 131 BURGESS JUNCTION 7880 15.7 5.5 285 24.5 18.0 136 CLOUD PEAK RESERVOIR 9860 25.8 10.9 237 27.7 20.9 133 DOME LAKE 8880 20.4 5.3 385 25.2 20.0 126 GRAVE SPRINGS 8550 12.6 2.8 450 19.1 15.6 122 HANSEN SAWMILL 8360 7.6 .6 1267* 17.4 13.5 129 LITTLE GOOSE 8870 17.8 -M * 26.7 -M * MIDDLE POWDER 7760 13.1 5.5 238 20.5 18.6 110 POWDER RIVER PASS 9480 22.3 3.9 572 28.9 18.9 153 SOLDIER PARK 8720 10.2 -M * 18.2 -M * SUCKER CREEK 8880 23.6 6.0 393 30.1 20.9 144 TIE CREEK 6870 4.0 .0 * 23.3 16.6 140 ----- ----- Basin wide percent of average 343 134 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 27.2 17.2 158 COLE CANYON 5910 .0 .0 100* 23.3 12.3 189 NORTH RAPID CREEK 6130 .0 .0 100* 23.3 13.6 171 ----- ----- Basin wide percent of average * 171 UPPER N. PLATTE RIVER CINNABAR PARK 9574 28.5 4.3 663 46.1 26.4 175 COLUMBINE 9160 29.8 5.2 573 48.2 31.8 152 DIVIDE PEAK 8880 26.4 6.5 406 40.8 27.0 151 ELK RIVER 8700 19.2 2.7 711 37.1 25.5 145 JOE WRIGHT 10120 52.3 20.2 259 52.9 34.1 155 NORTH FRENCH CREEK 10130 64.8 28.1 231 -M 33.6 * OLD BATTLE 10000 59.4 29.9 199 65.8 43.6 151 SAGE CREEK BASIN 7850 .0 3.8 0 25.7 15.6 165 SOUTH BRUSH CREEK 8440 15.4 3.0 513 33.5 23.1 145 TOWER 10500 79.3 47.1 168 69.8 49.3 142 WEBBER SPRINGS 9250 32.5 10.4 313 50.1 34.1 147 WILLOW CREEK PASS 9540 25.9 5.9 439 28.8 18.2 158 ----- ----- Basin wide percent of average 259 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 15.9 * 46.5 30.5 152 CASPER MTN. 7900 6.9 6.4 108 22.7 23.3 97 DEADMAN HILL 10220 32.0 14.1 227 34.6 24.1 144 DEER PARK 9700 23.4 12.7 184 31.6 30.3 104 LAPRELE CREEK 8375 6.5 1.5 433 21.5 19.5 110 RENO HILL 8400 14.3 5.2 275 26.3 24.1 109 ROACH 9700 25.6 8.4 305 35.2 25.8 136 SAND LAKE 10050 53.1 30.3 175 52.3 33.5 156 SOUTH PASS 9040 19.4 8.8 220 23.6 25.5 93 WINDY PEAK 7900 .2 .4 50* 19.3 16.4 118 ----- ----- Basin wide percent of average 207 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.1 20.6 122 DIVIDE PEAK 8880 26.4 6.5 406 40.8 27.0 151 OLD BATTLE 10000 59.4 29.9 199 65.8 43.6 151 SANDSTONE RS 8150 11.5 .9 1278* 36.7 24.3 151 WHISKEY PARK 8950 -M 18.8 * 58.1 37.2 156 ----- ----- Basin wide percent of average 261* 148 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.0 4.3 302 22.1 18.1 122 BLIND BULL SUM 8650 43.6 20.8 210 31.5 27.6 114 EAST RIM DIVIDE 7930 .7 4.4 16 19.1 15.7 122 ELKHART PARK G.S. 9400 13.8 5.6 246 19.5 18.5 105 GROS VENTRE SUMMIT 8750 17.1 6.0 285 23.1 17.2 134 GUNSIGHT PASS 9820 -M -M * 27.2 -M * KENDALL R.S. 7740 4.4 .0 * 22.8 18.2 125 LOOMIS PARK 8240 15.0 5.1 294 29.9 22.1 135 NEW FORK LAKE 8340 4.9 .0 * 16.4 15.4 106 POCKET CREEK 9360 13.4 -M * 21.0 -M * SNIDER BASIN 8060 11.6 2.5 464 25.6 20.1 127 SPRING CREEK DIVIDE 9000 42.5 18.9 225 43.0 32.6 132 TRIPLE PEAK 8500 33.0 9.5 347 45.7 31.4 146 ----- ----- Basin wide percent of average 259 126 LOWER GREEN RIVER HAMS FORK 7840 2.2 .0 * 22.3 16.6 134 HEWINTA 9519 11.8 1.4 843 27.2 19.9 137 HICKERSON PARK 9145 .0 .3 0* 17.1 12.2 140 HOLE-IN-ROCK 9150 .4 .3 133* 19.1 11.8 162 INDIAN CREEK 9425 38.2 18.2 210 36.7 32.0 115 KELLEY R.S. 8180 17.3 4.2 412 32.4 25.8 126 STEEL CREEK PARK 10200 28.8 14.5 199 31.7 22.7 140 ----- ----- Basin wide percent of average 254 132 UPPER BEAR RIVER BUG LAKE 7950 30.7 5.0 614 40.0 24.7 162 HAYDEN FORK 9212 18.7 3.0 623 41.7 27.9 149 KELLEY R.S. 8180 17.3 4.2 412 32.4 25.8 126 LILY LAKE 9156 22.7 2.8 811 33.0 23.6 140 MONTE CRISTO 8960 47.9 16.4 292 51.4 33.5 153 SALT RIVER SUMMIT 7760 10.3 .0 * 28.8 23.7 122 TRIAL LAKE 9992 52.0 18.0 289 46.9 32.7 143 ----- ----- Basin wide percent of average 404 143 ----------------------------------------------------------------------------- -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.