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 9 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 12.9 5.0 258 29.3 23.6 124 BLACK BEAR 8170 43.9 36.8 119 46.1 42.9 107 BLIND BULL SUM 8650 38.1 22.5 169 25.3 22.1 114 COTTONWOOD CREEK 7670 23.7 13.1 181 38.1 28.6 133 EAST RIM DIVIDE 7930 4.8 6.2 77 17.2 13.4 128 GRAND TARGHEE 9260 52.6 46.4 113 -M 35.9 * GRANITE CREEK 6770 14.9 5.9 253 27.1 22.0 123 GRASSY LAKE 7265 33.2 26.4 126 44.7 40.4 111 GROS VENTRE SUMMIT 8750 13.2 9.8 135 16.7 15.2 110 GUNSIGHT PASS 9820 19.7 11.9 166 21.8 16.8 130 LEWIS LAKE DIVIDE 7850 39.2 29.5 133 44.5 39.6 112 PHILLIPS BENCH 8200 35.2 23.3 151 38.9 31.7 123 SALT RIVER SUMMIT 7760 8.1 5.1 159 21.4 19.0 113 SNAKE RIVER STATION 6920 7.9 3.1 255 28.9 25.5 113 SPRING CREEK DIVIDE 9000 35.5 23.8 149 35.3 27.0 131 THUMB DIVIDE 7980 15.0 8.9 169 22.6 21.7 104 TOGWOTEE PASS 9580 33.8 25.3 134 36.9 28.4 130 TWO OCEAN PLATEAU 9240 39.5 29.7 133 38.5 31.1 124 WILLOW CREEK 8380 33.4 21.3 157 45.6 39.0 117 YOUNTS PEAK 8350 -M 15.5 * -M 18.4 * ----- ----- Basin Index (%) 143 119 MADISON-GALLATIN BLACK BEAR 8170 43.9 36.8 119 46.1 42.9 107 CANYON 7870 12.2 7.7 158 19.3 18.8 103 MADISON PLATEAU 7750 25.1 20.4 123 29.5 29.9 99 WEST YELLOWSTONE 6700 .0 .0 * 18.9 16.6 114 WHISKEY CREEK 6800 15.0 11.1 135 25.0 23.0 109 ----- ----- Basin Index (%) 127 106 YELLOWSTONE BEARTOOTH LAKE 9360 33.6 23.0 146 34.1 23.0 148 BURNT MTN 5880 1.0 .0 * 24.5 17.0 144 CANYON 7870 12.2 7.7 158 19.3 18.8 103 COLE CREEK 7850 24.7 17.1 144 21.0 17.8 118 EVENING STAR 9200 41.4 25.3 164 45.7 31.7 144 FISHER CREEK 9100 47.6 34.0 140 45.3 36.5 124 NORTHEAST ENTRANCE 7350 6.0 1.0 600 18.6 14.5 128 PARKER PEAK 9400 37.4 21.8 172 34.5 21.1 164 SYLVAN LAKE 8420 23.1 18.1 128 34.1 26.2 130 THUMB DIVIDE 7980 15.0 8.9 169 22.6 21.7 104 TWO OCEAN PLATEAU 9240 39.5 29.7 133 38.5 31.1 124 WHITE MILL 8700 35.7 24.6 145 33.7 27.4 123 WOLVERINE 7650 8.6 .4 2150* 20.8 14.5 143 ----- ----- Basin Index (%) 154 130 WIND RIVER BURROUGHS CREEK 8750 -M 11.7 * -M 18.7 * CASTLE CREEK 8400 1.4 -M * 14.5 -M * COLD SPRINGS 9630 2.7 1.7 159 15.0 13.3 113 DEER PARK 9700 15.7 14.5 108 22.1 24.4 91 HOBBS PARK 10100 14.5 15.9 91 16.6 17.7 94 KIRWIN 9550 19.5 10.9 179 21.1 14.7 144 LITTLE WARM 9370 11.3 6.7 169 19.7 16.1 122 OWL CREEK 8975 .0 .6 0 9.1 8.5 107 SOUTH PASS 9040 11.7 12.2 96 17.1 21.2 81 ST. LAWRENCE ALT 8620 .7 1.4 50 11.4 12.3 93 TOGWOTEE PASS 9580 33.8 25.3 134 36.9 28.4 130 TOWNSEND CREEK 8700 1.2 4.4 27 11.7 15.7 75 ----- ----- Basin Index (%) 119 105 BIGHORN BASIN BALD MTN. 9380 30.3 20.5 148 24.2 20.9 116 BEAR TRAP MEADOW 8200 3.1 .2 1550* 13.1 11.5 114 BONE SPRINGS DIV 9350 25.0 16.5 152 21.0 19.5 108 GRAVE SPRINGS 8550 10.5 7.9 133 14.5 14.0 104 KIRWIN 9550 19.5 10.9 179 21.1 14.7 144 MARQUETTE 8760 14.9 -M * 16.9 -M * MIDDLE POWDER 7760 15.8 11.0 144 16.8 15.2 111 OWL CREEK 8975 .0 .6 0 9.1 8.5 107 POWDER RIVER PASS 9480 12.7 9.0 141 19.2 16.1 119 SHELL CREEK 9580 20.4 16.7 122 20.1 17.5 115 TIMBER CREEK 7950 1.5 1.7 88 12.9 10.8 119 ----- ----- Basin Index (%) 146 116 SHOSHONE RIVER BLACKWATER 9780 35.4 25.0 142 33.9 24.4 139 EVENING STAR 9200 41.4 25.3 164 45.7 31.7 144 MARQUETTE 8760 14.9 -M * 16.9 -M * SYLVAN ROAD 7120 .0 1.9 0 25.1 19.2 131 YOUNTS PEAK 8350 -M 15.5 * -M 18.4 * ----- ----- Basin Index (%) 147 139 POWDER RIVER BEAR TRAP MEADOW 8200 3.1 .2 1550* 13.1 11.5 114 CLOUD PEAK RESERVOIR 9860 23.5 16.7 141 24.0 18.0 133 GRAVE SPRINGS 8550 10.5 7.9 133 14.5 14.0 104 HANSEN SAWMILL 8360 4.5 1.4 321 15.4 11.8 131 MIDDLE POWDER 7760 15.8 11.0 144 16.8 15.2 111 POWDER RIVER PASS 9480 12.7 9.0 141 19.2 16.1 119 SOLDIER PARK 8720 9.3 -M * 15.7 -M * ----- ----- Basin Index (%) 152 119 TONGUE RIVER BIG GOOSE 7990 10.9 10.4 105 18.6 15.6 119 BONE SPRINGS DIV 9350 25.0 16.5 152 21.0 19.5 108 BURGESS JUNCTION 7880 17.3 11.5 150 20.1 15.9 126 DOME LAKE 8880 16.1 11.2 144 19.3 17.8 108 LITTLE GOOSE 8870 13.5 -M * 21.6 -M * SUCKER CREEK 8880 17.7 12.5 142 24.2 18.8 129 TIE CREEK 6870 5.0 1.7 294 18.9 15.7 120 ----- ----- Basin Index (%) 144 118 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 16.8 13.4 125 ----- ----- Basin Index (%) * 125 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.2 15.3 132 NORTH RAPID CREEK 6130 .0 .0 * 19.2 13.2 145 ----- ----- Basin Index (%) * 138 UPPER N. PLATTE ARAPAHO RIDGE 10960 27.0 22.4 121 30.9 27.3 113 BLACKHALL MTN 9820 35.2 -M * -M -M * COLUMBINE 9160 25.0 13.5 185 -M 29.5 * DIVIDE PEAK 8880 8.8 14.9 59 25.6 25.4 101 JOE WRIGHT 10120 27.9 23.0 121 37.8 31.2 121 LAPRELE CREEK 8375 1.5 3.4 44 14.6 16.0 91 MED BOW 10500 -M -M * 45.0 -M * NORTH FRENCH CREEK 10130 37.6 32.8 115 39.7 32.2 123 NEVER SUMMER 10280 27.3 22.1 124 23.9 -M * OLD BATTLE 10000 34.6 36.6 95 40.1 40.7 99 RAWAH 9020 5.8 3.0 193 20.6 18.0 114 SAGE CREEK BASIN 7850 .0 .0 * 14.0 16.8 83 SAND LAKE 10050 35.7 31.8 112 37.1 30.3 122 SOUTH BRUSH CREEK 8440 2.0 5.8 34 18.4 18.9 97 TOWER 10500 52.8 51.4 103 56.5 46.2 122 WEBBER SPRINGS 9250 16.6 19.8 84 31.3 31.0 101 WILLOW CREEK PASS 9540 14.4 13.7 105 17.3 16.4 105 ZIRKEL 9340 30.2 19.9 152 -M 32.2 * ----- ----- Basin Index (%) 111 110 SWEETWATER DEER PARK 9700 15.7 14.5 108 22.1 24.4 91 LARSEN CREEK 9000 2.8 6.8 41 17.0 -M * SOUTH PASS 9040 11.7 12.2 96 17.1 21.2 81 ----- ----- Basin Index (%) 90 86 LOWER N. PLATTE CASPER MTN. 7900 12.8 11.7 109 19.1 19.3 99 LAPRELE CREEK 8375 1.5 3.4 44 14.6 16.0 91 RENO HILL 8400 16.5 11.0 150 25.1 20.0 126 WINDY PEAK 7900 1.4 1.2 117 14.9 13.8 108 ----- ----- Basin Index (%) 118 107 LARAMIE RIVER BROOKLYN LAKE 10240 27.6 21.7 127 33.9 25.8 131 CINNABAR PARK 9574 21.5 17.8 121 32.5 28.2 115 CROW CREEK 8330 .0 .0 * 15.0 14.2 106 DEADMAN HILL 10220 26.4 18.6 142 27.7 21.6 128 RAWAH 9020 5.8 3.0 193 20.6 18.0 114 ROACH 9700 16.5 16.2 102 27.2 23.2 117 ----- ----- Basin Index (%) 127 120 S. PLATTE BLACK MOUNTAIN 8920 6.1 -M * -M -M * CROW CREEK 8330 .0 .0 * 15.0 14.2 106 DEADMAN HILL 10220 26.4 18.6 142 27.7 21.6 128 ----- ----- Basin Index (%) 142* 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.8 107 DIVIDE PEAK 8880 8.8 14.9 59 25.6 25.4 101 ELK RIVER 8700 9.2 8.6 107 25.0 23.6 106 LITTLE SNAKE RIVER 8915 -M 20.7 * -M 34.3 * OLD BATTLE 10000 34.6 36.6 95 40.1 40.7 99 SAGE CREEK BASIN 7850 .0 .0 * 14.0 16.8 83 SANDSTONE RS 8150 .0 2.2 0 19.7 21.6 91 WHISKEY PARK 8950 38.5 26.9 143 43.3 32.8 132 ----- ----- Basin Index (%) 102 105 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.8 8.6 137 16.3 16.0 102 BLIND BULL SUM 8650 38.1 22.5 169 25.3 22.1 114 EAST RIM DIVIDE 7930 4.8 6.2 77 17.2 13.4 128 ELKHART PARK G.S. 9400 16.6 9.7 171 19.5 15.8 123 GROS VENTRE SUMMIT 8750 13.2 9.8 135 16.7 15.2 110 GUNSIGHT PASS 9820 19.7 11.9 166 21.8 16.8 130 KENDALL R.S. 7740 12.4 .0 * 24.5 16.1 152 LOOMIS PARK 8240 16.8 7.6 221 27.0 19.7 137 NEW FORK LAKE 8340 8.4 3.0 280 14.5 12.7 114 POCKET CREEK 9360 11.9 -M * 14.3 -M * SNIDER BASIN 8060 5.7 7.5 76 20.8 16.1 129 SPRING CREEK DIVIDE 9000 35.5 23.8 149 35.3 27.0 131 TRIPLE PEAK 8500 27.5 15.1 182 40.1 29.0 138 ----- ----- Basin Index (%) 167 127 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 15.5 -M * BUCK PASTURE 9700 8.1 -M * 20.2 -M * EF BLACKS FORK GS 9360 .6 -M * 11.8 -M * HAMS FORK 7840 2.3 .2 1150* 15.7 13.7 115 HEWINTA 9519 .0 2.4 0 16.6 17.0 98 HICKERSON PARK 9145 .1 .5 20* 9.6 12.7 76 HOLE-IN-ROCK 9150 .0 .3 0* 11.1 12.2 91 INDIAN CREEK 9425 29.1 21.0 139 29.2 25.9 113 KELLEY R.S. 8180 11.6 8.6 135 22.4 20.9 107 SPIRIT LK 10235 3.9 -M * 15.8 -M * STEEL CREEK PARK 10200 19.3 17.8 108 19.0 20.0 95 ----- ----- Basin Index (%) 123* 101 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.7 -M * BUG LAKE 7950 15.1 12.4 122 23.4 22.4 104 BURTS MILLER RANCH 8000 .2 -M * 8.2 -M * CHALK CREEK #1 8993 16.7 21.9 76 26.5 29.6 90 HAYDEN FORK 9212 3.7 6.3 59 24.5 24.7 99 KELLEY R.S. 8180 11.6 8.6 135 22.4 20.9 107 LILY LAKE 9156 5.9 6.2 95 18.0 20.4 88 MONTE CRISTO 8960 19.7 22.0 90 28.7 30.4 94 SALT RIVER SUMMIT 7760 8.1 5.1 159 21.4 19.0 113 ----- ----- Basin Index (%) 98 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.