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 TUESDAY: MAY 24 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.6 2.4 567 34.4 26.4 130 COTTONWOOD CREEK 7670 30.3 9.4 322 48.5 35.0 139 GRAND TARGHEE 9260 69.7 -M * -M -M * GRANITE CREEK 6770 16.3 4.2 388 33.1 24.3 136 GRASSY LAKE 7265 37.5 20.5 183 55.2 44.0 125 GROS VENTRE SUMMIT 8750 17.7 6.8 260 22.9 17.0 135 GUNSIGHT PASS 9820 -M -M * 26.9 -M * LEWIS LAKE DIVIDE 7850 47.5 23.6 201 49.3 44.5 111 PHILLIPS BENCH 8200 38.8 19.0 204 46.2 35.8 129 SALT RIVER SUMMIT 7760 11.1 .5 2220* 28.4 23.5 121 SNAKE RIVER STATION 6920 -M 1.1 * 35.4 27.7 128 SPRING CREEK DIVIDE 9000 42.6 20.1 212 42.8 32.5 132 THUMB DIVIDE 7980 16.3 5.7 286 28.8 24.2 119 TOGWOTEE PASS 9580 41.1 25.1 164 44.0 31.9 138 TWO OCEAN PLATEAU 9240 52.4 28.4 185 43.5 35.3 123 WILLOW CREEK 8380 42.2 19.9 212 56.5 41.5 136 ----- ----- Basin wide percent of average 220 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 32.3 23.5 137 34.7 26.2 132 BLACK BEAR 8170 51.4 32.1 160 59.0 49.3 120 CANYON 7870 13.6 3.8 358 25.1 19.8 127 FISHER CREEK 9100 52.7 33.2 159 54.2 45.5 119 MADISON PLATEAU 7750 29.2 14.2 206 41.8 33.3 126 NORTHEAST ENTRANCE 7350 2.5 1.0 250* 21.9 16.8 130 PARKER PEAK 9400 38.0 21.7 175 38.7 22.3 174 SYLVAN LAKE 8420 28.6 16.0 179 39.1 27.9 140 THUMB DIVIDE 7980 16.3 5.7 286 28.8 24.2 119 TWO OCEAN PLATEAU 9240 52.4 28.4 185 43.5 35.3 123 WHISKEY CREEK 6800 13.6 5.0 272 30.8 26.5 116 WHITE MILL 8700 35.8 21.7 165 39.2 34.2 115 WOLVERINE 7650 3.3 .7 471* 20.2 17.6 115 ----- ----- Basin wide percent of average 179 126 WIND RIVER BURROUGHS CREEK 8750 20.9 6.7 312 26.8 21.8 123 CASTLE CREEK 8400 .0 -M * 13.4 -M * COLD SPRINGS 9630 10.5 1.5 700 18.1 16.4 110 DEER PARK 9700 23.7 13.8 172 31.3 30.0 104 HOBBS PARK 10100 24.5 13.6 180 25.0 20.1 124 LITTLE WARM 9370 16.5 4.2 393 20.9 19.3 108 SOUTH PASS 9040 19.9 9.5 209 23.2 25.4 91 ST. LAWRENCE ALT 8620 2.8 1.2 233 17.5 14.5 121 TOGWOTEE PASS 9580 41.1 25.1 164 44.0 31.9 138 TOWNSEND CREEK 8700 8.0 3.0 267 20.1 18.1 111 ----- ----- Basin wide percent of average 214 115 BIGHORN BASIN BALD MTN. 9380 39.1 20.2 194 31.8 24.5 130 BEAR TRAP MEADOW 8200 9.5 .0 * 17.3 13.4 129 BLACKWATER 9780 40.0 27.9 143 38.8 27.8 140 BONE SPRINGS DIV 9350 31.9 12.6 253 27.8 21.4 130 EVENING STAR 9200 39.8 29.9 133 48.2 33.3 145 GRAVE SPRINGS 8550 13.6 3.0 453 18.9 15.5 122 KIRWIN 9550 18.8 8.5 221 22.8 16.7 137 MARQUETTE 8760 13.7 -M * 18.0 17.0 106 MIDDLE POWDER 7760 14.9 6.3 237 19.9 18.4 108 OWL CREEK 8975 3.3 1.2 275 13.0 10.4 125 POWDER RIVER PASS 9480 22.4 4.6 487 28.5 18.7 152 SHELL CREEK 9580 27.3 13.7 199 26.9 19.6 137 SYLVAN LAKE 8420 28.6 16.0 179 39.1 27.9 140 SYLVAN ROAD 7120 .0 .4 0* 29.1 22.6 129 TIMBER CREEK 7950 4.0 1.2 333 14.4 13.5 107 YOUNTS PEAK 8350 21.6 11.3 191 24.5 21.2 116 ----- ----- Basin wide percent of average 201 130 SHOSHONE RIVER BLACKWATER 9780 40.0 27.9 143 38.8 27.8 140 EVENING STAR 9200 39.8 29.9 133 48.2 33.3 145 KIRWIN 9550 18.8 8.5 221 22.8 16.7 137 MARQUETTE 8760 13.7 -M * 18.0 17.0 106 SYLVAN LAKE 8420 28.6 16.0 179 39.1 27.9 140 SYLVAN ROAD 7120 .0 .4 0* 29.1 22.6 129 YOUNTS PEAK 8350 21.6 11.3 191 24.5 21.2 116 ----- ----- Basin wide percent of average 158 132 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.5 .0 * 17.3 13.4 129 BIG GOOSE 7990 14.1 6.6 214 21.3 15.7 136 BONE SPRINGS DIV 9350 31.9 12.6 253 27.8 21.4 130 BURGESS JUNCTION 7880 16.4 6.4 256 23.9 17.9 134 CLOUD PEAK RESERVOIR 9860 25.0 11.5 217 26.7 20.7 129 DOME LAKE 8880 20.4 6.2 329 24.5 19.8 124 GRAVE SPRINGS 8550 13.6 3.0 453 18.9 15.5 122 HANSEN SAWMILL 8360 8.5 .8 1063 16.6 13.3 125 LITTLE GOOSE 8870 18.2 -M * 25.8 -M * MIDDLE POWDER 7760 14.9 6.3 237 19.9 18.4 108 POWDER RIVER PASS 9480 22.4 4.6 487 28.5 18.7 152 SOLDIER PARK 8720 10.7 -M * 17.3 -M * SUCKER CREEK 8880 23.7 6.8 349 29.2 20.6 142 TIE CREEK 6870 4.9 .0 * 22.1 16.4 135 ----- ----- Basin wide percent of average 317 131 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 26.8 17.0 158 COLE CANYON 5910 .0 .0 100* 22.5 12.1 186 NORTH RAPID CREEK 6130 .0 .0 100* 22.8 13.4 170 ----- ----- Basin wide percent of average * 170 UPPER N. PLATTE RIVER CINNABAR PARK 9574 29.4 5.5 535 46.0 26.2 176 COLUMBINE 9160 32.0 6.5 492 48.2 31.6 153 DIVIDE PEAK 8880 27.8 7.6 366 40.7 26.8 152 ELK RIVER 8700 21.1 3.4 621 37.0 25.3 146 JOE WRIGHT 10120 52.0 21.0 248 52.6 33.8 156 NORTH FRENCH CREEK 10130 64.9 29.3 222 -M 33.3 * OLD BATTLE 10000 60.0 31.1 193 65.6 43.3 152 SAGE CREEK BASIN 7850 .3 4.4 7 25.8 15.5 166 SOUTH BRUSH CREEK 8440 16.4 3.6 456 33.4 22.9 146 TOWER 10500 79.6 48.2 165 69.2 49.0 141 WEBBER SPRINGS 9250 34.1 11.8 289 50.0 34.0 147 WILLOW CREEK PASS 9540 26.1 6.9 378 28.5 18.0 158 ----- ----- Basin wide percent of average 247 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 41.7 17.3 241 46.2 30.3 152 CASPER MTN. 7900 8.8 7.2 122 22.2 23.1 96 DEADMAN HILL 10220 32.2 15.0 215 34.5 23.9 144 DEER PARK 9700 23.7 13.8 172 31.3 30.0 104 LAPRELE CREEK 8375 7.8 1.8 433 21.5 19.3 111 RENO HILL 8400 15.6 6.0 260 26.3 23.8 111 ROACH 9700 26.2 9.3 282 35.1 25.5 138 SAND LAKE 10050 53.0 31.6 168 52.0 33.2 157 SOUTH PASS 9040 19.9 9.5 209 23.2 25.4 91 WINDY PEAK 7900 .9 .6 150* 19.2 16.2 119 ----- ----- Basin wide percent of average 205 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 25.0 20.5 122 DIVIDE PEAK 8880 27.8 7.6 366 40.7 26.8 152 OLD BATTLE 10000 60.0 31.1 193 65.6 43.3 152 SANDSTONE RS 8150 13.2 1.3 1015* 36.7 24.2 152 WHISKEY PARK 8950 -M 20.5 * 57.9 37.0 156 ----- ----- Basin wide percent of average 253* 149 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 5.2 262 21.8 18.0 121 BLIND BULL SUM 8650 43.6 21.7 201 31.3 27.4 114 EAST RIM DIVIDE 7930 2.4 5.3 45 18.9 15.5 122 ELKHART PARK G.S. 9400 14.6 6.4 228 19.3 18.3 105 GROS VENTRE SUMMIT 8750 17.7 6.8 260 22.9 17.0 135 GUNSIGHT PASS 9820 -M -M * 26.9 -M * KENDALL R.S. 7740 6.2 .0 * 22.7 18.1 125 LOOMIS PARK 8240 16.2 5.9 275 29.5 21.9 135 NEW FORK LAKE 8340 5.9 .4 1475* 16.0 15.3 105 POCKET CREEK 9360 13.8 -M * 20.7 -M * SNIDER BASIN 8060 13.5 3.5 386 25.5 20.0 128 SPRING CREEK DIVIDE 9000 42.6 20.1 212 42.8 32.5 132 TRIPLE PEAK 8500 34.3 11.0 312 45.5 31.2 146 ----- ----- Basin wide percent of average 244 126 LOWER GREEN RIVER HAMS FORK 7840 3.9 .0 * 21.7 16.5 132 HEWINTA 9519 12.6 1.8 700 27.1 19.7 138 HICKERSON PARK 9145 .0 .5 0* 17.1 12.0 143 HOLE-IN-ROCK 9150 2.3 .4 575* 19.0 11.6 164 INDIAN CREEK 9425 37.7 19.3 195 36.3 31.8 114 KELLEY R.S. 8180 17.7 5.2 340 31.9 25.6 125 STEEL CREEK PARK 10200 28.6 15.3 187 31.6 22.5 140 ----- ----- Basin wide percent of average 242 132 UPPER BEAR RIVER BUG LAKE 7950 31.4 6.0 523 39.7 24.5 162 HAYDEN FORK 9212 19.5 3.7 527 41.5 27.7 150 KELLEY R.S. 8180 17.7 5.2 340 31.9 25.6 125 LILY LAKE 9156 23.5 3.4 691 32.8 23.4 140 MONTE CRISTO 8960 47.7 17.6 271 51.0 33.3 153 SALT RIVER SUMMIT 7760 11.1 .5 2220* 28.4 23.5 121 TRIAL LAKE 9992 51.8 19.0 273 46.7 32.4 144 ----- ----- Basin wide percent of average 366 143 ----------------------------------------------------------------------------- -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.