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 2 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 17.2 8.9 193 28.8 22.9 126 BLACK BEAR 8170 46.0 37.4 123 45.7 41.8 109 BLIND BULL SUM 8650 38.0 23.0 165 24.7 21.4 115 COTTONWOOD CREEK 7670 26.3 15.0 175 37.2 27.6 135 EAST RIM DIVIDE 7930 10.4 8.2 127 16.6 13.0 128 GRAND TARGHEE 9260 54.6 45.1 121 40.6 34.8 117 GRANITE CREEK 6770 18.7 8.1 231 26.2 21.4 122 GRASSY LAKE 7265 39.1 28.7 136 44.1 39.4 112 GROS VENTRE SUMMIT 8750 14.3 11.5 124 15.8 14.7 107 GUNSIGHT PASS 9820 20.5 12.3 167 20.8 16.1 129 LEWIS LAKE DIVIDE 7850 42.9 29.9 143 44.2 38.6 115 PHILLIPS BENCH 8200 36.8 25.1 147 38.4 30.7 125 SALT RIVER SUMMIT 7760 13.1 7.8 168 20.8 18.4 113 SNAKE RIVER STATION 6920 13.0 6.8 191 28.4 24.8 115 SPRING CREEK DIVIDE 9000 38.3 24.3 158 34.6 26.3 132 THUMB DIVIDE 7980 19.5 11.9 164 22.1 21.0 105 TOGWOTEE PASS 9580 34.7 24.8 140 36.1 27.4 132 TWO OCEAN PLATEAU 9240 39.7 29.8 133 37.7 30.2 125 WILLOW CREEK 8380 39.5 22.6 175 44.7 37.7 119 YOUNTS PEAK 8350 -M 15.6 * -M 17.7 * ----- ----- Basin Index (%) 148 120 MADISON-GALLATIN BLACK BEAR 8170 46.0 37.4 123 45.7 41.8 109 CANYON 7870 14.8 10.0 148 19.2 18.1 106 MADISON PLATEAU 7750 27.0 21.2 127 29.1 29.0 100 WEST YELLOWSTONE 6700 2.9 1.2 242 18.7 16.0 117 WHISKEY CREEK 6800 17.1 14.2 120 24.7 22.4 110 ----- ----- Basin Index (%) 128 108 YELLOWSTONE BEARTOOTH LAKE 9360 34.6 22.7 152 33.3 22.0 151 BURNT MTN 5880 4.2 .0 * 22.9 16.0 143 CANYON 7870 14.8 10.0 148 19.2 18.1 106 COLE CREEK 7850 25.4 16.6 153 19.6 16.5 119 EVENING STAR 9200 42.5 24.8 171 45.0 30.5 148 FISHER CREEK 9100 48.5 32.6 149 44.6 35.2 127 NORTHEAST ENTRANCE 7350 10.5 2.4 438 18.0 13.8 130 PARKER PEAK 9400 38.0 21.2 179 33.7 20.1 168 SYLVAN LAKE 8420 25.2 19.5 129 33.4 25.2 133 THUMB DIVIDE 7980 19.5 11.9 164 22.1 21.0 105 TWO OCEAN PLATEAU 9240 39.7 29.8 133 37.7 30.2 125 WHITE MILL 8700 36.3 23.8 153 32.8 26.4 124 WOLVERINE 7650 12.3 1.9 647 20.2 13.8 146 ----- ----- Basin Index (%) 162 132 WIND RIVER BURROUGHS CREEK 8750 -M 12.8 * -M 18.0 * CASTLE CREEK 8400 4.9 -M * 13.3 -M * COLD SPRINGS 9630 5.8 1.2 483 14.3 12.5 114 DEER PARK 9700 17.7 15.8 112 21.7 23.5 92 HOBBS PARK 10100 15.4 16.0 96 15.9 16.8 95 KIRWIN 9550 19.2 10.5 183 20.0 13.9 144 LITTLE WARM 9370 12.8 8.6 149 18.5 15.4 120 OWL CREEK 8975 1.0 .8 125 8.8 8.0 110 SOUTH PASS 9040 14.8 14.7 101 16.9 20.4 83 ST. LAWRENCE ALT 8620 .0 2.1 0 10.4 11.6 90 TOGWOTEE PASS 9580 34.7 24.8 140 36.1 27.4 132 TOWNSEND CREEK 8700 5.0 7.3 68 11.1 15.0 74 ----- ----- Basin Index (%) 124 106 BIGHORN BASIN BALD MTN. 9380 29.9 20.5 146 23.4 19.8 118 BEAR TRAP MEADOW 8200 7.3 .7 1043 12.8 10.7 120 BONE SPRINGS DIV 9350 25.5 16.5 155 20.5 18.3 112 GRAVE SPRINGS 8550 13.0 9.5 137 14.5 13.0 112 KIRWIN 9550 19.2 10.5 183 20.0 13.9 144 MARQUETTE 8760 15.8 -M * 15.6 -M * MIDDLE POWDER 7760 18.9 11.5 164 16.7 14.2 118 OWL CREEK 8975 1.0 .8 125 8.8 8.0 110 POWDER RIVER PASS 9480 14.7 9.2 160 18.7 15.2 123 SHELL CREEK 9580 21.8 15.9 137 19.5 16.4 119 TIMBER CREEK 7950 .0 3.0 0 11.1 10.1 110 ----- ----- Basin Index (%) 154 119 SHOSHONE RIVER BLACKWATER 9780 36.0 25.5 141 33.4 23.6 142 EVENING STAR 9200 42.5 24.8 171 45.0 30.5 148 MARQUETTE 8760 15.8 -M * 15.6 -M * SYLVAN ROAD 7120 6.4 5.2 123 24.6 18.6 132 YOUNTS PEAK 8350 -M 15.6 * -M 17.7 * ----- ----- Basin Index (%) 153 142 POWDER RIVER BEAR TRAP MEADOW 8200 7.3 .7 1043 12.8 10.7 120 CLOUD PEAK RESERVOIR 9860 24.5 16.4 149 23.1 16.8 138 GRAVE SPRINGS 8550 13.0 9.5 137 14.5 13.0 112 HANSEN SAWMILL 8360 7.9 2.1 376 14.5 11.0 132 MIDDLE POWDER 7760 18.9 11.5 164 16.7 14.2 118 POWDER RIVER PASS 9480 14.7 9.2 160 18.7 15.2 123 SOLDIER PARK 8720 12.3 -M * 14.5 -M * ----- ----- Basin Index (%) 175 124 TONGUE RIVER BIG GOOSE 7990 13.0 9.2 141 18.0 14.2 127 BONE SPRINGS DIV 9350 25.5 16.5 155 20.5 18.3 112 BURGESS JUNCTION 7880 18.3 12.0 152 19.6 14.9 132 DOME LAKE 8880 18.1 11.4 159 18.6 16.6 112 LITTLE GOOSE 8870 15.4 -M * 20.6 -M * SUCKER CREEK 8880 19.0 12.0 158 23.5 17.5 134 TIE CREEK 6870 7.0 2.6 269 18.1 14.6 124 ----- ----- Basin Index (%) 158 123 BELLE FOURCHE COLE CANYON 5910 4.0 .4 1000* 15.9 12.1 131 ----- ----- Basin Index (%) 1000* 131 CHEYENNE RIVER BASIN BLIND PARK 6890 2.7 .3 900* 19.3 14.5 133 NORTH RAPID CREEK 6130 3.7 .7 529 18.7 12.4 151 ----- ----- Basin Index (%) 640 141 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.8 22.3 134 30.9 26.3 117 BLACKHALL MTN 9820 39.6 -M * -M -M * COLUMBINE 9160 31.0 17.8 174 -M 28.7 * DIVIDE PEAK 8880 15.7 18.0 87 25.4 24.4 104 JOE WRIGHT 10120 29.1 23.1 126 37.6 30.0 125 LAPRELE CREEK 8375 6.5 5.8 112 14.4 15.1 95 MED BOW 10500 -M -M * 44.9 -M * NORTH FRENCH CREEK 10130 40.5 32.8 123 39.6 30.8 129 NEVER SUMMER 10280 28.9 21.8 133 23.8 -M * OLD BATTLE 10000 35.9 34.7 103 40.2 39.3 102 RAWAH 9020 9.7 5.6 173 20.5 17.3 118 SAGE CREEK BASIN 7850 .8 1.1 73* 14.0 16.2 86 SAND LAKE 10050 37.2 31.4 118 37.1 29.2 127 SOUTH BRUSH CREEK 8440 8.5 8.8 97 18.3 17.9 102 TOWER 10500 54.7 50.2 109 56.0 44.9 125 WEBBER SPRINGS 9250 22.9 21.5 107 31.2 30.1 104 WILLOW CREEK PASS 9540 17.0 14.3 119 17.3 15.8 109 ZIRKEL 9340 37.6 20.9 180 -M 31.1 * ----- ----- Basin Index (%) 123 113 SWEETWATER DEER PARK 9700 17.7 15.8 112 21.7 23.5 92 LARSEN CREEK 9000 7.2 8.9 81 16.6 -M * SOUTH PASS 9040 14.8 14.7 101 16.9 20.4 83 ----- ----- Basin Index (%) 101 88 LOWER N. PLATTE CASPER MTN. 7900 18.3 13.0 141 19.0 18.1 105 LAPRELE CREEK 8375 6.5 5.8 112 14.4 15.1 95 RENO HILL 8400 19.6 12.4 158 24.9 19.0 131 WINDY PEAK 7900 6.7 3.7 181 14.6 13.0 112 ----- ----- Basin Index (%) 146 112 LARAMIE RIVER BROOKLYN LAKE 10240 31.2 23.3 134 33.9 24.8 137 CINNABAR PARK 9574 24.3 19.2 127 32.4 27.0 120 CROW CREEK 8330 1.4 .0 * 14.4 13.5 107 DEADMAN HILL 10220 27.5 19.1 144 27.1 20.8 130 RAWAH 9020 9.7 5.6 173 20.5 17.3 118 ROACH 9700 20.8 17.1 122 26.9 22.4 120 ----- ----- Basin Index (%) 136 123 S. PLATTE BLACK MOUNTAIN 8920 10.8 -M * -M -M * CROW CREEK 8330 1.4 .0 * 14.4 13.5 107 DEADMAN HILL 10220 27.5 19.1 144 27.1 20.8 130 ----- ----- Basin Index (%) 151* 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.2 111 DIVIDE PEAK 8880 15.7 18.0 87 25.4 24.4 104 ELK RIVER 8700 15.8 12.9 122 24.8 22.8 109 LITTLE SNAKE RIVER 8915 26.2 22.1 119 37.3 32.9 113 OLD BATTLE 10000 35.9 34.7 103 40.2 39.3 102 SAGE CREEK BASIN 7850 .8 1.1 73* 14.0 16.2 86 SANDSTONE RS 8150 4.5 5.6 80 19.4 20.8 93 WHISKEY PARK 8950 38.0 26.6 143 43.1 31.6 136 ----- ----- Basin Index (%) 113 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.0 10.2 137 15.6 15.2 103 BLIND BULL SUM 8650 38.0 23.0 165 24.7 21.4 115 EAST RIM DIVIDE 7930 10.4 8.2 127 16.6 13.0 128 ELKHART PARK G.S. 9400 18.1 11.1 163 18.3 15.1 121 GROS VENTRE SUMMIT 8750 14.3 11.5 124 15.8 14.7 107 GUNSIGHT PASS 9820 20.5 12.3 167 20.8 16.1 129 KENDALL R.S. 7740 15.7 3.8 413 23.9 15.6 153 LOOMIS PARK 8240 21.6 10.8 200 26.4 19.0 139 NEW FORK LAKE 8340 11.3 6.3 179 14.0 12.2 115 POCKET CREEK 9360 12.2 -M * 13.5 -M * SNIDER BASIN 8060 11.9 9.1 131 20.5 15.7 131 SPRING CREEK DIVIDE 9000 38.3 24.3 158 34.6 26.3 132 TRIPLE PEAK 8500 32.3 17.1 189 39.2 28.0 140 ----- ----- Basin Index (%) 167 127 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.3 -M * 15.2 -M * BUCK PASTURE 9700 11.7 -M * 19.7 -M * EF BLACKS FORK GS 9360 5.9 -M * 11.6 -M * HAMS FORK 7840 7.9 2.5 316 15.1 13.2 114 HEWINTA 9519 6.5 4.6 141 16.3 16.3 100 HICKERSON PARK 9145 .2 3.9 5 9.6 12.1 79 HOLE-IN-ROCK 9150 .0 2.2 0 11.0 11.6 95 INDIAN CREEK 9425 32.2 22.8 141 28.5 25.1 114 KELLEY R.S. 8180 14.8 11.2 132 21.8 20.2 108 SPIRIT LK 10235 8.3 -M * 15.8 -M * STEEL CREEK PARK 10200 21.9 17.2 127 18.6 19.2 97 ----- ----- Basin Index (%) 130 103 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.3 -M * BUG LAKE 7950 19.8 14.7 135 22.3 21.8 102 BURTS MILLER RANCH 8000 .2 -M * 7.9 -M * CHALK CREEK #1 8993 20.5 24.0 85 26.0 28.6 91 HAYDEN FORK 9212 9.3 9.1 102 24.1 23.9 101 KELLEY R.S. 8180 14.8 11.2 132 21.8 20.2 108 LILY LAKE 9156 10.5 10.0 105 17.4 19.6 89 MONTE CRISTO 8960 23.5 26.2 90 28.2 29.3 96 SALT RIVER SUMMIT 7760 13.1 7.8 168 20.8 18.4 113 ----- ----- Basin Index (%) 108 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.