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 WEDNESDAY: MAY 21 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 4.8 .0 * 30.3 24.6 123 BLACK BEAR 8170 -M 33.2 * -M 44.7 * BLIND BULL SUM 8650 -M 19.4 * -M 23.3 * COTTONWOOD CREEK 7670 18.2 5.4 337 39.6 30.0 132 EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.2 125 GRAND TARGHEE 9260 49.3 41.8 118 44.9 36.8 122 GRANITE CREEK 6770 8.4 .0 * 27.6 23.0 120 GRASSY LAKE 7265 25.1 16.4 153 46.5 42.0 111 GROS VENTRE SUMMIT 8750 -M 4.9 * -M 16.2 * GUNSIGHT PASS 9820 17.2 9.9 174 22.4 17.7 127 LEWIS LAKE DIVIDE 7850 33.1 21.7 153 46.9 41.1 114 PHILLIPS BENCH 8200 28.9 18.4 157 39.7 33.0 120 SALT RIVER SUMMIT 7760 -M .0 * -M 20.0 * SNAKE RIVER STATION 6920 -M .0 * -M 26.6 * SPRING CREEK DIVIDE 9000 -M 19.7 * -M 28.1 * THUMB DIVIDE 7980 -M .8 * -M 22.8 * TOGWOTEE PASS 9580 31.1 22.9 136 37.6 29.8 126 TWO OCEAN PLATEAU 9240 -M 28.2 * -M 33.0 * WILLOW CREEK 8380 -M 15.8 * -M 41.0 * YOUNTS PEAK 8350 -M 11.5 * -M 19.6 * ----- ----- Basin Index (%) 158* 121 MADISON-GALLATIN BLACK BEAR 8170 -M 33.2 * -M 44.7 * CANYON 7870 7.0 1.6 438 20.3 19.9 102 MADISON PLATEAU 7750 20.4 13.8 148 30.8 31.6 97 WEST YELLOWSTONE 6700 -M .0 * -M 17.6 * WHISKEY CREEK 6800 -M 5.0 * -M 24.4 * ----- ----- Basin Index (%) 178* 99* YELLOWSTONE BEARTOOTH LAKE 9360 32.5 21.4 152 34.9 24.2 144 BURNT MTN 5880 .2 .0 * 25.9 19.2 135 CANYON 7870 7.0 1.6 438 20.3 19.9 102 COLE CREEK 7850 25.7 15.8 163 22.8 19.6 116 EVENING STAR 9200 37.8 23.4 162 46.6 33.4 140 FISHER CREEK 9100 48.4 32.5 149 47.2 38.5 123 NORTHEAST ENTRANCE 7350 .0 .0 * 19.5 15.6 125 PARKER PEAK 9400 35.6 19.6 182 35.6 22.5 158 SYLVAN LAKE 8420 -M 14.7 * -M 27.7 * THUMB DIVIDE 7980 -M .8 * -M 22.8 * TWO OCEAN PLATEAU 9240 -M 28.2 * -M 33.0 * WHITE MILL 8700 -M 21.9 * -M 29.0 * WOLVERINE 7650 .0 .0 * 21.2 15.6 136 ----- ----- Basin Index (%) 164* 131 WIND RIVER BURROUGHS CREEK 8750 -M 8.7 * -M 20.0 * CASTLE CREEK 8400 .0 -M * 15.0 -M * COLD SPRINGS 9630 .0 .0 * 15.2 14.4 106 DEER PARK 9700 -M 10.0 * 24.3 26.0 93 HOBBS PARK 10100 14.7 12.7 116 18.4 19.4 95 KIRWIN 9550 17.0 8.0 212 22.2 15.9 140 LITTLE WARM 9370 7.5 2.1 357 20.2 17.4 116 OWL CREEK 8975 .2 .0 * 9.6 9.7 99 SOUTH PASS 9040 9.6 5.8 166 19.2 22.5 85 ST. LAWRENCE ALT 8620 .2 .0 * 12.8 13.5 95 TOGWOTEE PASS 9580 31.1 22.9 136 37.6 29.8 126 TOWNSEND CREEK 8700 .0 .0 * 14.9 17.2 87 ----- ----- Basin Index (%) 156* 105 BIGHORN BASIN BALD MTN. 9380 31.2 18.8 166 25.5 22.1 115 BEAR TRAP MEADOW 8200 .0 .0 * 14.4 12.6 114 BONE SPRINGS DIV 9350 24.1 14.0 172 22.4 20.9 107 GRAVE SPRINGS 8550 7.3 1.9 384 15.5 15.1 103 KIRWIN 9550 17.0 8.0 212 22.2 15.9 140 MARQUETTE 8760 12.8 -M * 18.0 -M * MIDDLE POWDER 7760 11.2 4.4 255 17.5 16.3 107 OWL CREEK 8975 .2 .0 * 9.6 9.7 99 POWDER RIVER PASS 9480 12.0 4.7 255 20.4 17.3 118 SHELL CREEK 9580 21.4 14.9 144 21.5 18.5 116 TIMBER CREEK 7950 .3 .0 * 14.0 12.2 115 ----- ----- Basin Index (%) 187 114 SHOSHONE RIVER BLACKWATER 9780 34.0 24.0 142 34.9 26.1 134 EVENING STAR 9200 37.8 23.4 162 46.6 33.4 140 MARQUETTE 8760 12.8 -M * 18.0 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.3 127 YOUNTS PEAK 8350 -M 11.5 * -M 19.6 * ----- ----- Basin Index (%) 151* 134 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .0 * 14.4 12.6 114 CLOUD PEAK RESERVOIR 9860 24.8 14.3 173 26.6 19.7 135 GRAVE SPRINGS 8550 7.3 1.9 384 15.5 15.1 103 HANSEN SAWMILL 8360 1.2 .0 * 17.0 13.0 131 MIDDLE POWDER 7760 11.2 4.4 255 17.5 16.3 107 POWDER RIVER PASS 9480 12.0 4.7 255 20.4 17.3 118 SOLDIER PARK 8720 7.9 -M * 17.3 -M * ----- ----- Basin Index (%) 223 119 TONGUE RIVER BIG GOOSE 7990 10.4 3.8 274 20.1 17.2 117 BONE SPRINGS DIV 9350 24.1 14.0 172 22.4 20.9 107 BURGESS JUNCTION 7880 14.5 7.6 191 21.1 17.0 124 DOME LAKE 8880 16.1 5.4 298 21.1 19.1 110 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 16.2 8.1 200 25.6 20.3 126 TIE CREEK 6870 .8 .0 * 19.9 17.3 115 ----- ----- Basin Index (%) 211 116 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.9 14.9 120 ----- ----- Basin Index (%) * 120 CHEYENNE RIVER BASIN BLIND PARK 6890 .1 .0 * 20.9 16.7 125 NORTH RAPID CREEK 6130 .0 .0 * 20.2 14.6 138 ----- ----- Basin Index (%) * 131 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.6 17.3 171 34.5 28.5 121 BLACKHALL MTN 9820 36.9 -M * 43.7 -M * COLUMBINE 9160 19.3 1.7 1135* 41.7 30.7 136 DIVIDE PEAK 8880 6.2 4.7 132 29.7 26.5 112 JOE WRIGHT 10120 32.2 20.7 156 41.1 33.0 125 LAPRELE CREEK 8375 .2 .0 * 17.2 17.0 101 MED BOW 10500 -M -M * 48.4 -M * NORTH FRENCH CREEK 10130 38.2 28.9 132 42.3 33.8 125 NEVER SUMMER 10280 26.7 19.7 136 25.8 -M * OLD BATTLE 10000 -M 32.2 * -M 42.2 * RAWAH 9020 3.9 .4 975* 23.1 18.9 122 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84 SAND LAKE 10050 39.4 27.4 144 41.9 32.0 131 SOUTH BRUSH CREEK 8440 .0 .0 * 19.7 20.2 98 TOWER 10500 54.1 47.3 114 60.4 47.9 126 WEBBER SPRINGS 9250 17.6 10.9 161 35.8 32.1 112 WILLOW CREEK PASS 9540 12.5 8.8 142 19.3 17.4 111 ZIRKEL 9340 28.2 8.1 348 -M 33.4 * ----- ----- Basin Index (%) 157 119 SWEETWATER DEER PARK 9700 -M 10.0 * 24.3 26.0 93 LARSEN CREEK 9000 .0 3.3 0 17.9 -M * SOUTH PASS 9040 9.6 5.8 166 19.2 22.5 85 ----- ----- Basin Index (%) 105 90 LOWER N. PLATTE CASPER MTN. 7900 11.1 3.6 308 21.1 20.5 103 LAPRELE CREEK 8375 .2 .0 * 17.2 17.0 101 RENO HILL 8400 16.7 2.6 642 28.3 21.5 132 WINDY PEAK 7900 .2 .0 * 16.9 14.9 113 ----- ----- Basin Index (%) 455 113 LARAMIE RIVER BROOKLYN LAKE 10240 27.7 15.5 179 38.0 27.3 139 CINNABAR PARK 9574 21.1 11.5 183 36.7 29.6 124 CROW CREEK 8330 .6 .0 * 17.7 15.2 116 DEADMAN HILL 10220 26.1 16.0 163 30.4 23.1 132 RAWAH 9020 3.9 .4 975* 23.1 18.9 122 ROACH 9700 16.7 10.8 155 30.9 24.7 125 ----- ----- Basin Index (%) 177 127 S. PLATTE BLACK MOUNTAIN 8920 1.1 -M * 19.0 -M * CROW CREEK 8330 .6 .0 * 17.7 15.2 116 DEADMAN HILL 10220 26.1 16.0 163 30.4 23.1 132 ----- ----- Basin Index (%) 167* 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.6 108 DIVIDE PEAK 8880 6.2 4.7 132 29.7 26.5 112 ELK RIVER 8700 3.3 .0 * 26.9 24.6 109 LITTLE SNAKE RIVER 8915 -M 12.2 * -M 35.2 * OLD BATTLE 10000 -M 32.2 * -M 42.2 * SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84 SANDSTONE RS 8150 -M .0 * 21.0 22.5 93 WHISKEY PARK 8950 30.0 20.9 144 45.8 33.9 135 ----- ----- Basin Index (%) 154* 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.5 2.2 386 17.3 16.9 102 BLIND BULL SUM 8650 -M 19.4 * -M 23.3 * EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.2 125 ELKHART PARK G.S. 9400 13.2 5.2 254 20.3 16.8 121 GROS VENTRE SUMMIT 8750 -M 4.9 * -M 16.2 * GUNSIGHT PASS 9820 17.2 9.9 174 22.4 17.7 127 KENDALL R.S. 7740 5.2 .0 * 25.0 16.8 149 LOOMIS PARK 8240 -M 1.9 * -M 20.6 * NEW FORK LAKE 8340 1.8 .0 * 15.0 13.6 110 POCKET CREEK 9360 8.9 -M * 15.2 -M * SNIDER BASIN 8060 .0 .0 * 21.7 16.8 129 SPRING CREEK DIVIDE 9000 -M 19.7 * -M 28.1 * TRIPLE PEAK 8500 21.1 7.4 285 41.4 30.3 137 ----- ----- Basin Index (%) 271* 126 LOWER GREEN RIVER BLACKS FORK JCT 8870 -M -M * -M -M * BUCK PASTURE 9700 -M -M * -M -M * EF BLACKS FORK GS 9360 -M -M * 13.8 -M * HAMS FORK 7840 .0 .0 * 16.8 14.4 117 HEWINTA 9519 .0 .0 * 18.3 17.8 103 HICKERSON PARK 9145 .0 .0 * 12.1 13.5 90 HOLE-IN-ROCK 9150 .0 .0 * 13.4 13.0 103 INDIAN CREEK 9425 25.2 17.8 142 30.7 27.1 113 KELLEY R.S. 8180 -M 2.1 * -M 21.8 * SPIRIT LK 10235 -M -M * -M -M * STEEL CREEK PARK 10200 18.0 14.2 127 21.0 21.1 100 ----- ----- Basin Index (%) 135* 105 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 8.7 3.8 229 24.5 23.6 104 BURTS MILLER RANCH 8000 .1 -M * 8.7 -M * CHALK CREEK #1 8993 11.7 14.6 80 27.5 30.9 89 HAYDEN FORK 9212 .0 .0 * 25.1 25.9 97 KELLEY R.S. 8180 -M 2.1 * -M 21.8 * LILY LAKE 9156 .0 .0 * 18.7 21.4 87 MONTE CRISTO 8960 14.8 13.9 106 30.0 31.6 95 SALT RIVER SUMMIT 7760 -M .0 * -M 20.0 * ----- ----- Basin Index (%) 109* 94 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.