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 SATURDAY: MAY 17 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 8.6 .0 * 30.3 24.2 125 BLACK BEAR 8170 45.9 35.3 130 48.4 44.3 109 BLIND BULL SUM 8650 37.1 21.5 173 26.0 23.0 113 COTTONWOOD CREEK 7670 21.8 8.9 245 39.6 29.6 134 EAST RIM DIVIDE 7930 .1 2.6 4 17.8 14.0 127 GRAND TARGHEE 9260 51.9 44.0 118 44.8 36.7 122 GRANITE CREEK 6770 11.9 .0 * 27.6 22.7 122 GRASSY LAKE 7265 30.9 20.4 151 46.5 41.5 112 GROS VENTRE SUMMIT 8750 11.7 7.6 154 17.0 15.9 107 GUNSIGHT PASS 9820 19.0 11.7 162 22.2 17.5 127 LEWIS LAKE DIVIDE 7850 38.9 24.5 159 46.9 40.6 116 PHILLIPS BENCH 8200 32.5 21.0 155 39.6 32.6 121 SALT RIVER SUMMIT 7760 5.3 .6 883* 22.3 19.7 113 SNAKE RIVER STATION 6920 3.6 .0 * 30.4 26.2 116 SPRING CREEK DIVIDE 9000 36.1 22.0 164 36.4 27.8 131 THUMB DIVIDE 7980 12.3 3.6 342 23.6 22.5 105 TOGWOTEE PASS 9580 33.2 23.8 139 37.5 29.4 128 TWO OCEAN PLATEAU 9240 41.2 29.0 142 39.8 32.4 123 WILLOW CREEK 8380 32.0 18.8 170 47.3 40.4 117 YOUNTS PEAK 8350 -M 12.9 * -M 19.2 * ----- ----- Basin Index (%) 161 119 MADISON-GALLATIN BLACK BEAR 8170 45.9 35.3 130 48.4 44.3 109 CANYON 7870 9.9 4.2 236 20.2 19.6 103 MADISON PLATEAU 7750 24.0 15.9 151 30.7 31.1 99 WEST YELLOWSTONE 6700 .1 .0 * 19.5 17.4 112 WHISKEY CREEK 6800 13.0 7.6 171 26.0 24.0 108 ----- ----- Basin Index (%) 147 106 YELLOWSTONE BEARTOOTH LAKE 9360 33.7 22.3 151 34.8 23.9 146 BURNT MTN 5880 .2 .0 * 25.9 18.9 137 CANYON 7870 9.9 4.2 236 20.2 19.6 103 COLE CREEK 7850 26.0 16.8 155 22.7 19.2 118 EVENING STAR 9200 38.8 24.9 156 46.6 32.9 142 FISHER CREEK 9100 47.4 33.6 141 46.9 37.9 124 NORTHEAST ENTRANCE 7350 2.0 .0 * 19.4 15.3 127 PARKER PEAK 9400 38.0 20.9 182 35.4 22.1 160 SYLVAN LAKE 8420 22.6 16.3 139 35.3 27.2 130 THUMB DIVIDE 7980 12.3 3.6 342 23.6 22.5 105 TWO OCEAN PLATEAU 9240 41.2 29.0 142 39.8 32.4 123 WHITE MILL 8700 36.0 23.7 152 35.0 28.6 122 WOLVERINE 7650 2.1 .0 * 21.2 15.3 139 ----- ----- Basin Index (%) 159 129 WIND RIVER BURROUGHS CREEK 8750 -M 10.8 * -M 19.6 * CASTLE CREEK 8400 .0 -M * 14.8 -M * COLD SPRINGS 9630 .8 .0 * 15.4 14.2 108 DEER PARK 9700 -M 12.4 * 24.1 25.7 94 HOBBS PARK 10100 15.9 14.4 110 18.3 19.0 96 KIRWIN 9550 19.0 9.7 196 22.1 15.6 142 LITTLE WARM 9370 10.1 4.9 206 20.2 17.1 118 OWL CREEK 8975 .2 .0 * 9.4 9.4 100 SOUTH PASS 9040 12.8 9.2 139 19.2 22.2 86 ST. LAWRENCE ALT 8620 .2 .0 * 12.8 13.2 97 TOGWOTEE PASS 9580 33.2 23.8 139 37.5 29.4 128 TOWNSEND CREEK 8700 1.9 .3 633* 14.1 16.8 84 ----- ----- Basin Index (%) 151* 106 BIGHORN BASIN BALD MTN. 9380 31.7 20.3 156 25.4 21.8 117 BEAR TRAP MEADOW 8200 .7 .0 * 14.0 12.4 113 BONE SPRINGS DIV 9350 26.5 15.3 173 22.2 20.5 108 GRAVE SPRINGS 8550 10.0 5.2 192 15.3 14.8 103 KIRWIN 9550 19.0 9.7 196 22.1 15.6 142 MARQUETTE 8760 15.0 -M * 17.8 -M * MIDDLE POWDER 7760 14.9 7.7 194 17.5 16.0 109 OWL CREEK 8975 .2 .0 * 9.4 9.4 100 POWDER RIVER PASS 9480 13.2 7.4 178 20.2 17.0 119 SHELL CREEK 9580 21.9 16.1 136 21.3 18.3 116 TIMBER CREEK 7950 .3 .0 * 13.4 11.9 113 ----- ----- Basin Index (%) 169 115 SHOSHONE RIVER BLACKWATER 9780 35.9 24.9 144 34.7 25.6 136 EVENING STAR 9200 38.8 24.9 156 46.6 32.9 142 MARQUETTE 8760 15.0 -M * 17.8 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.0 128 YOUNTS PEAK 8350 -M 12.9 * -M 19.2 * ----- ----- Basin Index (%) 150* 136 POWDER RIVER BEAR TRAP MEADOW 8200 .7 .0 * 14.0 12.4 113 CLOUD PEAK RESERVOIR 9860 25.2 15.8 159 26.0 19.3 135 GRAVE SPRINGS 8550 10.0 5.2 192 15.3 14.8 103 HANSEN SAWMILL 8360 4.2 .0 * 16.1 12.6 128 MIDDLE POWDER 7760 14.9 7.7 194 17.5 16.0 109 POWDER RIVER PASS 9480 13.2 7.4 178 20.2 17.0 119 SOLDIER PARK 8720 9.5 -M * 16.5 -M * ----- ----- Basin Index (%) 189 118 TONGUE RIVER BIG GOOSE 7990 11.8 7.5 157 20.0 16.8 119 BONE SPRINGS DIV 9350 26.5 15.3 173 22.2 20.5 108 BURGESS JUNCTION 7880 17.0 9.8 173 21.2 16.7 127 DOME LAKE 8880 17.3 8.5 204 20.9 18.8 111 LITTLE GOOSE 8870 14.7 -M * 23.2 -M * SUCKER CREEK 8880 18.5 10.3 180 25.5 19.9 128 TIE CREEK 6870 4.0 .0 * 19.9 16.9 118 ----- ----- Basin Index (%) 185 118 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.4 14.6 119 ----- ----- Basin Index (%) * 119 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.8 16.4 127 NORTH RAPID CREEK 6130 .0 .0 * 20.0 14.3 140 ----- ----- Basin Index (%) * 133 UPPER N. PLATTE ARAPAHO RIDGE 10960 31.2 20.5 152 34.6 28.4 122 BLACKHALL MTN 9820 39.7 -M * -M -M * COLUMBINE 9160 26.4 6.4 412 -M 30.4 * DIVIDE PEAK 8880 12.0 8.6 140 29.7 26.2 113 JOE WRIGHT 10120 32.1 22.3 144 41.0 32.5 126 LAPRELE CREEK 8375 2.2 .0 * 16.8 16.6 101 MED BOW 10500 -M -M * 48.4 -M * NORTH FRENCH CREEK 10130 40.2 31.3 128 42.2 33.4 126 NEVER SUMMER 10280 29.6 21.7 136 25.8 -M * OLD BATTLE 10000 40.2 33.9 119 43.5 41.8 104 RAWAH 9020 7.4 .9 822* 23.1 18.8 123 SAGE CREEK BASIN 7850 1.1 .0 * 14.6 17.2 85 SAND LAKE 10050 40.4 29.3 138 41.7 31.5 132 SOUTH BRUSH CREEK 8440 .4 .5 80* 19.6 19.8 99 TOWER 10500 56.1 49.0 114 60.1 47.5 127 WEBBER SPRINGS 9250 20.5 14.8 139 35.9 31.8 113 WILLOW CREEK PASS 9540 15.7 10.6 148 19.2 17.1 112 ZIRKEL 9340 34.2 14.3 239 -M 33.3 * ----- ----- Basin Index (%) 148 116 SWEETWATER DEER PARK 9700 -M 12.4 * 24.1 25.7 94 LARSEN CREEK 9000 .8 4.5 18 17.9 -M * SOUTH PASS 9040 12.8 9.2 139 19.2 22.2 86 ----- ----- Basin Index (%) 99 90 LOWER N. PLATTE CASPER MTN. 7900 14.9 7.4 201 21.0 20.1 104 LAPRELE CREEK 8375 2.2 .0 * 16.8 16.6 101 RENO HILL 8400 19.0 6.4 297 28.0 21.0 133 WINDY PEAK 7900 2.0 .0 * 16.9 14.4 117 ----- ----- Basin Index (%) 276 115 LARAMIE RIVER BROOKLYN LAKE 10240 30.5 18.7 163 37.8 26.9 141 CINNABAR PARK 9574 21.8 14.4 151 36.7 29.4 125 CROW CREEK 8330 .3 .0 * 17.7 15.0 118 DEADMAN HILL 10220 28.6 17.9 160 30.4 22.7 134 RAWAH 9020 7.4 .9 822* 23.1 18.8 123 ROACH 9700 19.6 13.1 150 30.9 24.3 127 ----- ----- Basin Index (%) 166 129 S. PLATTE BLACK MOUNTAIN 8920 6.4 -M * 19.0 -M * CROW CREEK 8330 .3 .0 * 17.7 15.0 118 DEADMAN HILL 10220 28.6 17.9 160 30.4 22.7 134 ----- ----- Basin Index (%) 161* 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.5 109 DIVIDE PEAK 8880 12.0 8.6 140 29.7 26.2 113 ELK RIVER 8700 9.3 1.2 775* 26.9 24.4 110 LITTLE SNAKE RIVER 8915 -M 16.5 * -M 35.0 * OLD BATTLE 10000 40.2 33.9 119 43.5 41.8 104 SAGE CREEK BASIN 7850 1.1 .0 * 14.6 17.2 85 SANDSTONE RS 8150 -M .0 * 20.6 22.3 92 WHISKEY PARK 8950 32.4 23.8 136 45.8 33.7 136 ----- ----- Basin Index (%) 141* 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.1 6.1 182 17.3 16.6 104 BLIND BULL SUM 8650 37.1 21.5 173 26.0 23.0 113 EAST RIM DIVIDE 7930 .1 2.6 4 17.8 14.0 127 ELKHART PARK G.S. 9400 16.2 7.5 216 20.3 16.5 123 GROS VENTRE SUMMIT 8750 11.7 7.6 154 17.0 15.9 107 GUNSIGHT PASS 9820 19.0 11.7 162 22.2 17.5 127 KENDALL R.S. 7740 8.9 .0 * 24.9 16.6 150 LOOMIS PARK 8240 14.3 4.8 298 27.5 20.4 135 NEW FORK LAKE 8340 5.1 .4 1275* 14.9 13.4 111 POCKET CREEK 9360 11.6 -M * 15.2 -M * SNIDER BASIN 8060 .0 2.9 0 21.7 16.6 131 SPRING CREEK DIVIDE 9000 36.1 22.0 164 36.4 27.8 131 TRIPLE PEAK 8500 25.6 11.1 231 41.2 30.0 137 ----- ----- Basin Index (%) 189 126 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.8 -M * BUCK PASTURE 9700 6.8 -M * 21.2 -M * EF BLACKS FORK GS 9360 .0 -M * 13.8 -M * HAMS FORK 7840 .0 .0 * 16.8 14.2 118 HEWINTA 9519 .0 .0 * 18.4 17.6 105 HICKERSON PARK 9145 .1 .0 * 12.1 13.3 91 HOLE-IN-ROCK 9150 .0 .0 * 13.4 12.8 105 INDIAN CREEK 9425 28.8 20.5 140 30.8 26.8 115 KELLEY R.S. 8180 9.9 5.1 194 23.6 21.6 109 SPIRIT LK 10235 5.0 -M * 18.8 -M * STEEL CREEK PARK 10200 20.7 15.8 131 21.1 20.8 101 ----- ----- Basin Index (%) 144* 107 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 13.0 8.4 155 24.5 23.2 106 BURTS MILLER RANCH 8000 .1 -M * 8.8 -M * CHALK CREEK #1 8993 15.8 18.0 88 27.5 30.6 90 HAYDEN FORK 9212 .7 1.1 64* 25.2 25.6 98 KELLEY R.S. 8180 9.9 5.1 194 23.6 21.6 109 LILY LAKE 9156 3.9 .0 * 18.7 21.2 88 MONTE CRISTO 8960 18.6 17.5 106 30.0 31.4 96 SALT RIVER SUMMIT 7760 5.3 .6 883* 22.3 19.7 113 ----- ----- Basin Index (%) 133* 99 ----------------------------------------------------------------------------- -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.