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 FRIDAY: MAY 16 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 9.5 .0 * 30.3 24.1 126 BLACK BEAR 8170 46.2 35.8 129 48.3 44.0 110 BLIND BULL SUM 8650 36.9 21.8 169 25.9 22.9 113 COTTONWOOD CREEK 7670 22.5 9.6 234 39.4 29.6 133 EAST RIM DIVIDE 7930 .6 3.3 18 17.4 13.9 125 GRAND TARGHEE 9260 53.0 44.6 119 44.7 36.7 122 GRANITE CREEK 6770 12.5 .4 3125* 27.5 22.6 122 GRASSY LAKE 7265 32.3 21.3 152 46.5 41.3 113 GROS VENTRE SUMMIT 8750 12.2 8.2 149 17.0 15.8 108 GUNSIGHT PASS 9820 19.5 12.0 162 22.1 17.5 126 LEWIS LAKE DIVIDE 7850 39.6 25.3 157 46.7 40.5 115 PHILLIPS BENCH 8200 33.7 21.5 157 39.6 32.5 122 SALT RIVER SUMMIT 7760 6.5 1.0 650* 22.1 19.6 113 SNAKE RIVER STATION 6920 4.7 .0 * 30.3 26.1 116 SPRING CREEK DIVIDE 9000 36.7 22.3 165 36.4 27.8 131 THUMB DIVIDE 7980 13.2 4.3 307 23.5 22.4 105 TOGWOTEE PASS 9580 34.0 24.1 141 37.4 29.2 128 TWO OCEAN PLATEAU 9240 40.7 29.1 140 39.7 32.3 123 WILLOW CREEK 8380 33.2 19.3 172 47.2 40.3 117 YOUNTS PEAK 8350 -M 13.3 * -M 19.2 * ----- ----- Basin Index (%) 160 119 MADISON-GALLATIN BLACK BEAR 8170 46.2 35.8 129 48.3 44.0 110 CANYON 7870 10.8 4.8 225 20.3 19.5 104 MADISON PLATEAU 7750 25.0 16.5 152 30.7 30.9 99 WEST YELLOWSTONE 6700 .0 .0 * 19.5 17.2 113 WHISKEY CREEK 6800 13.7 8.1 169 26.1 23.8 110 ----- ----- Basin Index (%) 147 107 YELLOWSTONE BEARTOOTH LAKE 9360 34.1 22.5 152 34.8 23.8 146 BURNT MTN 5880 .0 .0 * 25.8 18.8 137 CANYON 7870 10.8 4.8 225 20.3 19.5 104 COLE CREEK 7850 26.3 16.9 156 22.7 19.0 119 EVENING STAR 9200 40.2 25.1 160 46.5 32.7 142 FISHER CREEK 9100 47.9 33.9 141 46.8 37.7 124 NORTHEAST ENTRANCE 7350 3.2 .0 * 19.4 15.1 128 PARKER PEAK 9400 38.2 21.3 179 35.3 22.0 160 SYLVAN LAKE 8420 22.6 16.7 135 35.3 27.1 130 THUMB DIVIDE 7980 13.2 4.3 307 23.5 22.4 105 TWO OCEAN PLATEAU 9240 40.7 29.1 140 39.7 32.3 123 WHITE MILL 8700 36.5 24.1 151 35.0 28.4 123 WOLVERINE 7650 4.1 .0 * 21.2 15.2 139 ----- ----- Basin Index (%) 160 129 WIND RIVER BURROUGHS CREEK 8750 -M 11.1 * -M 19.5 * CASTLE CREEK 8400 .0 -M * 14.7 -M * COLD SPRINGS 9630 .9 .0 * 15.7 14.1 111 DEER PARK 9700 16.9 13.0 130 24.1 25.6 94 HOBBS PARK 10100 15.9 14.6 109 18.4 18.7 98 KIRWIN 9550 19.5 10.1 193 22.1 15.5 143 LITTLE WARM 9370 10.4 5.6 186 20.1 17.0 118 OWL CREEK 8975 .0 .0 * 9.4 9.3 101 SOUTH PASS 9040 12.9 9.7 133 19.1 22.2 86 ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.2 96 TOGWOTEE PASS 9580 34.0 24.1 141 37.4 29.2 128 TOWNSEND CREEK 8700 2.2 .6 367* 14.1 16.7 84 ----- ----- Basin Index (%) 145 106 BIGHORN BASIN BALD MTN. 9380 31.7 20.5 155 25.3 21.8 116 BEAR TRAP MEADOW 8200 1.1 .0 * 14.0 12.2 115 BONE SPRINGS DIV 9350 26.5 15.6 170 22.2 20.4 109 GRAVE SPRINGS 8550 10.1 5.9 171 15.3 14.8 103 KIRWIN 9550 19.5 10.1 193 22.1 15.5 143 MARQUETTE 8760 15.6 -M * 17.8 -M * MIDDLE POWDER 7760 15.3 8.3 184 17.4 15.9 109 OWL CREEK 8975 .0 .0 * 9.4 9.3 101 POWDER RIVER PASS 9480 13.2 8.0 165 20.2 16.8 120 SHELL CREEK 9580 21.9 16.4 134 21.2 18.2 116 TIMBER CREEK 7950 .0 .0 * 13.4 11.8 114 ----- ----- Basin Index (%) 164 115 SHOSHONE RIVER BLACKWATER 9780 36.1 24.9 145 34.7 25.4 137 EVENING STAR 9200 40.2 25.1 160 46.5 32.7 142 MARQUETTE 8760 15.6 -M * 17.8 -M * SYLVAN ROAD 7120 .0 .0 * 25.6 19.9 129 YOUNTS PEAK 8350 -M 13.3 * -M 19.2 * ----- ----- Basin Index (%) 153* 137 POWDER RIVER BEAR TRAP MEADOW 8200 1.1 .0 * 14.0 12.2 115 CLOUD PEAK RESERVOIR 9860 25.3 16.1 157 25.8 19.1 135 GRAVE SPRINGS 8550 10.1 5.9 171 15.3 14.8 103 HANSEN SAWMILL 8360 4.6 .0 * 16.1 12.5 129 MIDDLE POWDER 7760 15.3 8.3 184 17.4 15.9 109 POWDER RIVER PASS 9480 13.2 8.0 165 20.2 16.8 120 SOLDIER PARK 8720 9.8 -M * 16.5 -M * ----- ----- Basin Index (%) 182 119 TONGUE RIVER BIG GOOSE 7990 11.9 8.2 145 19.8 16.7 119 BONE SPRINGS DIV 9350 26.5 15.6 170 22.2 20.4 109 BURGESS JUNCTION 7880 17.6 10.2 173 21.0 16.6 127 DOME LAKE 8880 17.4 9.2 189 20.6 18.6 111 LITTLE GOOSE 8870 14.7 -M * 22.9 -M * SUCKER CREEK 8880 18.5 10.8 171 25.2 19.8 127 TIE CREEK 6870 4.5 .0 * 19.7 16.9 117 ----- ----- Basin Index (%) 179 118 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.5 14.5 121 ----- ----- Basin Index (%) * 121 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.6 16.3 126 NORTH RAPID CREEK 6130 .0 .0 * 19.7 14.2 139 ----- ----- Basin Index (%) * 132 UPPER N. PLATTE ARAPAHO RIDGE 10960 31.1 21.1 147 34.5 28.4 121 BLACKHALL MTN 9820 39.7 -M * -M -M * COLUMBINE 9160 27.0 7.5 360 -M 30.3 * DIVIDE PEAK 8880 12.5 9.6 130 29.6 26.1 113 JOE WRIGHT 10120 31.2 22.6 138 40.5 32.3 125 LAPRELE CREEK 8375 2.3 .0 * 16.7 16.5 101 MED BOW 10500 -M -M * 48.3 -M * NORTH FRENCH CREEK 10130 40.3 31.8 127 42.1 33.2 127 NEVER SUMMER 10280 29.0 22.0 132 25.3 -M * OLD BATTLE 10000 40.0 34.5 116 43.5 41.6 105 RAWAH 9020 7.5 1.2 625 22.7 18.8 121 SAGE CREEK BASIN 7850 1.9 .0 * 14.5 17.2 84 SAND LAKE 10050 40.3 29.9 135 41.7 31.4 133 SOUTH BRUSH CREEK 8440 1.3 1.0 130* 19.5 19.7 99 TOWER 10500 56.1 49.5 113 60.0 47.3 127 WEBBER SPRINGS 9250 20.5 15.6 131 35.8 31.8 113 WILLOW CREEK PASS 9540 15.7 11.0 143 19.1 17.0 112 ZIRKEL 9340 34.0 15.6 218 -M 33.3 * ----- ----- Basin Index (%) 143 116 SWEETWATER DEER PARK 9700 16.9 13.0 130 24.1 25.6 94 LARSEN CREEK 9000 1.6 4.7 34 17.9 -M * SOUTH PASS 9040 12.9 9.7 133 19.1 22.2 86 ----- ----- Basin Index (%) 115 90 LOWER N. PLATTE CASPER MTN. 7900 14.8 8.3 178 20.8 20.0 104 LAPRELE CREEK 8375 2.3 .0 * 16.7 16.5 101 RENO HILL 8400 18.9 7.2 262 28.0 21.0 133 WINDY PEAK 7900 2.2 .0 * 16.8 14.3 117 ----- ----- Basin Index (%) 246 115 LARAMIE RIVER BROOKLYN LAKE 10240 30.8 19.2 160 37.8 26.7 142 CINNABAR PARK 9574 22.5 14.8 152 36.6 29.2 125 CROW CREEK 8330 .3 .0 * 17.6 15.0 117 DEADMAN HILL 10220 28.6 18.2 157 30.1 22.5 134 RAWAH 9020 7.5 1.2 625 22.7 18.8 121 ROACH 9700 19.6 13.5 145 30.8 24.1 128 ----- ----- Basin Index (%) 163 129 S. PLATTE BLACK MOUNTAIN 8920 6.9 -M * 18.9 -M * CROW CREEK 8330 .3 .0 * 17.6 15.0 117 DEADMAN HILL 10220 28.6 18.2 157 30.1 22.5 134 ----- ----- Basin Index (%) 159* 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.0 18.4 109 DIVIDE PEAK 8880 12.5 9.6 130 29.6 26.1 113 ELK RIVER 8700 9.8 2.2 445 26.7 24.3 110 LITTLE SNAKE RIVER 8915 -M 17.3 * -M 35.0 * OLD BATTLE 10000 40.0 34.5 116 43.5 41.6 105 SAGE CREEK BASIN 7850 1.9 .0 * 14.5 17.2 84 SANDSTONE RS 8150 -M .0 * 20.5 22.3 92 WHISKEY PARK 8950 33.4 24.2 138 45.6 33.6 136 ----- ----- Basin Index (%) 138 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.7 7.0 167 17.2 16.6 104 BLIND BULL SUM 8650 36.9 21.8 169 25.9 22.9 113 EAST RIM DIVIDE 7930 .6 3.3 18 17.4 13.9 125 ELKHART PARK G.S. 9400 16.8 8.0 210 20.3 16.4 124 GROS VENTRE SUMMIT 8750 12.2 8.2 149 17.0 15.8 108 GUNSIGHT PASS 9820 19.5 12.0 162 22.1 17.5 126 KENDALL R.S. 7740 9.6 .0 * 24.8 16.5 150 LOOMIS PARK 8240 15.2 5.4 281 27.5 20.3 135 NEW FORK LAKE 8340 6.0 .7 857* 14.9 13.3 112 POCKET CREEK 9360 12.1 -M * 15.1 -M * SNIDER BASIN 8060 .7 3.9 18 21.7 16.6 131 SPRING CREEK DIVIDE 9000 36.7 22.3 165 36.4 27.8 131 TRIPLE PEAK 8500 26.7 12.0 222 41.1 29.9 137 ----- ----- Basin Index (%) 184 126 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.7 -M * BUCK PASTURE 9700 7.9 -M * 21.2 -M * EF BLACKS FORK GS 9360 .0 -M * 13.5 -M * HAMS FORK 7840 .0 .0 * 16.8 14.2 118 HEWINTA 9519 .2 .0 * 18.3 17.5 105 HICKERSON PARK 9145 1.1 .0 * 12.1 13.2 92 HOLE-IN-ROCK 9150 .0 .0 * 13.4 12.8 105 INDIAN CREEK 9425 29.9 20.9 143 30.7 26.7 115 KELLEY R.S. 8180 10.8 5.8 186 23.6 21.5 110 SPIRIT LK 10235 5.2 -M * 18.7 -M * STEEL CREEK PARK 10200 20.9 16.1 130 21.1 20.7 102 ----- ----- Basin Index (%) 147* 107 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 13.9 9.4 148 24.4 23.2 105 BURTS MILLER RANCH 8000 .2 -M * 8.8 -M * CHALK CREEK #1 8993 16.5 18.7 88 27.6 30.5 90 HAYDEN FORK 9212 1.3 2.1 62 25.2 25.5 99 KELLEY R.S. 8180 10.8 5.8 186 23.6 21.5 110 LILY LAKE 9156 4.8 .7 686* 18.6 21.1 88 MONTE CRISTO 8960 19.6 18.4 107 30.0 31.3 96 SALT RIVER SUMMIT 7760 6.5 1.0 650* 22.1 19.6 113 ----- ----- Basin Index (%) 131 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.