Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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 20 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.8 4.3 367 34.0 26.1 130 COTTONWOOD CREEK 7670 32.4 11.5 282 47.4 34.5 137 GRAND TARGHEE 9260 68.1 -M * -M -M * GRANITE CREEK 6770 17.9 5.9 303 33.0 24.0 138 GRASSY LAKE 7265 40.5 23.3 174 55.1 43.5 127 GROS VENTRE SUMMIT 8750 18.5 8.2 226 22.6 16.7 135 GUNSIGHT PASS 9820 -M -M * 26.2 -M * LEWIS LAKE DIVIDE 7850 50.5 26.2 193 49.3 44.0 112 PHILLIPS BENCH 8200 40.2 21.4 188 45.7 35.4 129 SALT RIVER SUMMIT 7760 13.2 2.5 528 28.0 23.2 121 SNAKE RIVER STATION 6920 -M 3.1 * 35.4 27.3 130 SPRING CREEK DIVIDE 9000 42.6 22.3 191 42.3 32.1 132 THUMB DIVIDE 7980 18.9 7.5 252 28.7 23.8 121 TOGWOTEE PASS 9580 41.1 26.3 156 43.4 31.4 138 TWO OCEAN PLATEAU 9240 51.9 29.6 175 43.1 34.8 124 WILLOW CREEK 8380 42.8 22.5 190 55.4 40.9 135 ----- ----- Basin wide percent of average 202 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 33.1 24.4 136 33.8 25.8 131 BLACK BEAR 8170 52.9 34.5 153 58.4 48.7 120 CANYON 7870 17.1 5.2 329 25.0 19.4 129 FISHER CREEK 9100 52.1 35.0 149 52.8 44.9 118 MADISON PLATEAU 7750 31.6 16.9 187 41.3 32.8 126 NORTHEAST ENTRANCE 7350 5.4 1.7 318 21.1 16.5 128 PARKER PEAK 9400 38.0 23.1 165 36.4 21.8 167 SYLVAN LAKE 8420 27.6 18.2 152 38.8 27.3 142 THUMB DIVIDE 7980 18.9 7.5 252 28.7 23.8 121 TWO OCEAN PLATEAU 9240 51.9 29.6 175 43.1 34.8 124 WHISKEY CREEK 6800 16.4 7.2 228 30.9 26.1 118 WHITE MILL 8700 36.3 23.4 155 38.4 33.7 114 WOLVERINE 7650 7.7 1.7 453 19.9 17.2 116 ----- ----- Basin wide percent of average 170 126 WIND RIVER BURROUGHS CREEK 8750 22.1 8.8 251 26.4 21.4 123 CASTLE CREEK 8400 .6 -M * 13.1 -M * COLD SPRINGS 9630 11.4 2.3 496 17.9 16.0 112 DEER PARK 9700 23.5 16.4 143 30.5 29.5 103 HOBBS PARK 10100 23.8 15.5 154 23.2 19.6 118 LITTLE WARM 9370 17.3 5.9 293 20.7 18.9 110 SOUTH PASS 9040 19.8 11.6 171 22.5 25.0 90 ST. LAWRENCE ALT 8620 4.2 2.2 191 17.3 14.2 122 TOGWOTEE PASS 9580 41.1 26.3 156 43.4 31.4 138 TOWNSEND CREEK 8700 8.4 4.3 195 19.6 17.7 111 ----- ----- Basin wide percent of average 184 114 BIGHORN BASIN BALD MTN. 9380 34.5 22.0 157 28.7 24.0 120 BEAR TRAP MEADOW 8200 9.7 .1 9700* 15.9 13.0 122 BLACKWATER 9780 39.5 28.7 138 38.0 27.3 139 BONE SPRINGS DIV 9350 28.8 14.6 197 25.4 20.9 122 EVENING STAR 9200 40.2 31.3 128 47.2 32.7 144 GRAVE SPRINGS 8550 11.8 5.2 227 15.8 15.1 105 KIRWIN 9550 18.3 10.0 183 21.9 16.3 134 MARQUETTE 8760 12.6 -M * 16.8 16.5 102 MIDDLE POWDER 7760 14.4 8.5 169 16.1 18.0 89 OWL CREEK 8975 4.0 1.6 250 11.9 10.0 119 POWDER RIVER PASS 9480 21.2 6.4 331 26.9 18.3 147 SHELL CREEK 9580 25.0 15.1 166 24.6 19.2 128 SYLVAN LAKE 8420 27.6 18.2 152 38.8 27.3 142 SYLVAN ROAD 7120 4.0 1.4 286 29.0 22.3 130 TIMBER CREEK 7950 4.9 1.7 288 13.8 13.0 106 YOUNTS PEAK 8350 22.9 13.5 170 24.1 20.8 116 ----- ----- Basin wide percent of average 172 125 SHOSHONE RIVER BLACKWATER 9780 39.5 28.7 138 38.0 27.3 139 EVENING STAR 9200 40.2 31.3 128 47.2 32.7 144 KIRWIN 9550 18.3 10.0 183 21.9 16.3 134 MARQUETTE 8760 12.6 -M * 16.8 16.5 102 SYLVAN LAKE 8420 27.6 18.2 152 38.8 27.3 142 SYLVAN ROAD 7120 4.0 1.4 286 29.0 22.3 130 YOUNTS PEAK 8350 22.9 13.5 170 24.1 20.8 116 ----- ----- Basin wide percent of average 148 132 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.7 .1 9700* 15.9 13.0 122 BIG GOOSE 7990 13.3 7.9 168 19.2 15.3 125 BONE SPRINGS DIV 9350 28.8 14.6 197 25.4 20.9 122 BURGESS JUNCTION 7880 14.6 8.1 180 19.6 17.5 112 CLOUD PEAK RESERVOIR 9860 22.7 13.4 169 24.4 20.1 121 DOME LAKE 8880 19.3 8.5 227 22.5 19.3 117 GRAVE SPRINGS 8550 11.8 5.2 227 15.8 15.1 105 HANSEN SAWMILL 8360 9.2 1.2 767 15.9 12.9 123 LITTLE GOOSE 8870 16.7 -M * 23.5 -M * MIDDLE POWDER 7760 14.4 8.5 169 16.1 18.0 89 POWDER RIVER PASS 9480 21.2 6.4 331 26.9 18.3 147 SOLDIER PARK 8720 11.4 -M * 16.6 -M * SUCKER CREEK 8880 20.2 8.5 238 24.8 20.2 123 TIE CREEK 6870 5.7 .6 950* 18.3 16.0 114 ----- ----- Basin wide percent of average 230 118 BELLE FOURCHE BLIND PARK 6890 1.5 .0 * 24.1 16.5 146 COLE CANYON 5910 .0 .3 0* 18.6 11.7 159 NORTH RAPID CREEK 6130 .3 .2 150* 19.9 13.1 152 ----- ----- Basin wide percent of average 360* 152 UPPER N. PLATTE RIVER CINNABAR PARK 9574 30.9 8.0 386 44.8 25.9 173 COLUMBINE 9160 -M 9.4 * 46.1 31.2 148 DIVIDE PEAK 8880 27.0 9.9 273 39.3 26.4 149 ELK RIVER 8700 21.4 5.1 420 35.6 25.0 142 JOE WRIGHT 10120 50.9 22.5 226 51.1 33.2 154 NORTH FRENCH CREEK 10130 61.9 31.4 197 -M 32.8 * OLD BATTLE 10000 57.3 33.3 172 63.7 42.8 149 SAGE CREEK BASIN 7850 4.6 5.7 81 25.3 15.3 165 SOUTH BRUSH CREEK 8440 16.8 4.8 350 32.4 22.5 144 TOWER 10500 75.1 50.0 150 68.6 48.5 141 WEBBER SPRINGS 9250 34.0 14.6 233 48.6 33.5 145 WILLOW CREEK PASS 9540 25.7 8.9 289 27.8 17.6 158 ----- ----- Basin wide percent of average 209 150 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 40.5 20.0 203 -M 29.8 * CASPER MTN. 7900 9.6 9.2 104 20.9 22.5 93 DEADMAN HILL 10220 31.3 16.5 190 33.4 23.4 143 DEER PARK 9700 23.5 16.4 143 30.5 29.5 103 LAPRELE CREEK 8375 9.6 2.5 384 20.6 18.9 109 RENO HILL 8400 17.1 7.6 225 25.4 23.3 109 ROACH 9700 26.0 11.1 234 34.0 25.0 136 SAND LAKE 10050 51.1 33.7 152 50.1 32.6 154 SOUTH PASS 9040 19.8 11.6 171 22.5 25.0 90 WINDY PEAK 7900 4.3 1.0 430 18.9 15.8 120 ----- ----- Basin wide percent of average 180 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 23.3 20.2 115 DIVIDE PEAK 8880 27.0 9.9 273 39.3 26.4 149 OLD BATTLE 10000 57.3 33.3 172 63.7 42.8 149 SANDSTONE RS 8150 13.4 2.2 609 35.2 23.8 148 WHISKEY PARK 8950 -M 23.5 * 55.5 36.6 152 ----- ----- Basin wide percent of average 215 145 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.5 7.0 221 21.0 17.6 119 BLIND BULL SUM 8650 43.6 23.3 187 31.1 27.1 115 EAST RIM DIVIDE 7930 5.6 7.1 79 18.8 15.2 124 ELKHART PARK G.S. 9400 15.7 7.8 201 19.1 17.9 107 GROS VENTRE SUMMIT 8750 18.5 8.2 226 22.6 16.7 135 GUNSIGHT PASS 9820 -M -M * 26.2 -M * KENDALL R.S. 7740 8.1 1.1 736* 22.3 17.9 125 LOOMIS PARK 8240 18.7 7.7 243 29.5 21.6 137 NEW FORK LAKE 8340 7.8 1.9 411 15.7 14.9 105 POCKET CREEK 9360 15.1 -M * 20.2 -M * SNIDER BASIN 8060 16.2 5.4 300 25.2 19.7 128 SPRING CREEK DIVIDE 9000 42.6 22.3 191 42.3 32.1 132 TRIPLE PEAK 8500 36.0 13.8 261 44.9 30.8 146 ----- ----- Basin wide percent of average 216 126 LOWER GREEN RIVER HAMS FORK 7840 6.0 .0 * 21.2 16.2 131 HEWINTA 9519 13.1 2.9 452 26.6 19.4 137 HICKERSON PARK 9145 1.3 1.1 118 16.9 11.7 144 HOLE-IN-ROCK 9150 3.4 .9 378 18.6 11.3 165 INDIAN CREEK 9425 37.3 21.4 174 35.8 31.4 114 KELLEY R.S. 8180 18.7 7.0 267 31.2 25.3 123 STEEL CREEK PARK 10200 27.9 16.8 166 30.9 22.1 140 ----- ----- Basin wide percent of average 215 132 UPPER BEAR RIVER BUG LAKE 7950 32.9 8.1 406 39.2 24.2 162 HAYDEN FORK 9212 20.6 5.2 396 40.9 27.3 150 KELLEY R.S. 8180 18.7 7.0 267 31.2 25.3 123 LILY LAKE 9156 23.7 4.6 515 32.3 23.0 140 MONTE CRISTO 8960 47.7 20.0 239 49.8 32.8 152 SALT RIVER SUMMIT 7760 13.2 2.5 528 28.0 23.2 121 TRIAL LAKE 9992 -M 21.0 * 45.9 31.9 144 ----- ----- Basin wide percent of average 331 142 ----------------------------------------------------------------------------- -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.