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 THURSDAY: MAY 15 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 10.7 1.2 892* 30.2 24.0 126 BLACK BEAR 8170 46.1 36.0 128 48.3 43.8 110 BLIND BULL SUM 8650 36.8 22.0 167 25.8 22.8 113 COTTONWOOD CREEK 7670 23.5 10.3 228 39.4 29.5 134 EAST RIM DIVIDE 7930 1.9 3.9 49 17.5 13.9 126 GRAND TARGHEE 9260 53.1 45.1 118 44.7 36.6 122 GRANITE CREEK 6770 13.5 1.2 1125* 27.5 22.5 122 GRASSY LAKE 7265 33.3 22.2 150 46.5 41.2 113 GROS VENTRE SUMMIT 8750 12.9 8.6 150 17.1 15.7 109 GUNSIGHT PASS 9820 19.7 12.2 161 22.1 17.4 127 LEWIS LAKE DIVIDE 7850 40.6 26.2 155 46.7 40.3 116 PHILLIPS BENCH 8200 34.5 21.9 158 39.5 32.4 122 SALT RIVER SUMMIT 7760 7.8 1.5 520 22.2 19.5 114 SNAKE RIVER STATION 6920 6.2 .0 * 30.4 26.0 117 SPRING CREEK DIVIDE 9000 36.7 22.6 162 36.4 27.7 131 THUMB DIVIDE 7980 14.5 5.1 284 23.5 22.3 105 TOGWOTEE PASS 9580 35.0 24.5 143 37.4 29.1 129 TWO OCEAN PLATEAU 9240 40.8 29.2 140 39.7 32.2 123 WILLOW CREEK 8380 34.2 19.5 175 47.2 40.1 118 YOUNTS PEAK 8350 -M 13.8 * -M 19.0 * ----- ----- Basin Index (%) 160 120 MADISON-GALLATIN BLACK BEAR 8170 46.1 36.0 128 48.3 43.8 110 CANYON 7870 11.9 5.3 225 20.3 19.4 105 MADISON PLATEAU 7750 25.6 17.2 149 30.7 30.6 100 WEST YELLOWSTONE 6700 .0 .0 * 19.5 17.0 115 WHISKEY CREEK 6800 14.4 8.6 167 26.1 23.6 111 ----- ----- Basin Index (%) 146 108 YELLOWSTONE BEARTOOTH LAKE 9360 34.8 22.6 154 34.8 23.7 147 BURNT MTN 5880 .0 .0 * 25.6 18.8 136 CANYON 7870 11.9 5.3 225 20.3 19.4 105 COLE CREEK 7850 26.7 17.1 156 22.7 19.0 119 EVENING STAR 9200 42.0 25.3 166 46.5 32.6 143 FISHER CREEK 9100 48.7 34.1 143 46.8 37.5 125 NORTHEAST ENTRANCE 7350 4.4 .0 * 19.3 15.1 128 PARKER PEAK 9400 38.5 21.6 178 35.3 21.8 162 SYLVAN LAKE 8420 23.5 17.0 138 35.3 26.9 131 THUMB DIVIDE 7980 14.5 5.1 284 23.5 22.3 105 TWO OCEAN PLATEAU 9240 40.8 29.2 140 39.7 32.2 123 WHITE MILL 8700 36.8 24.4 151 35.0 28.3 124 WOLVERINE 7650 5.6 .0 * 21.1 15.1 140 ----- ----- Basin Index (%) 163 130 WIND RIVER BURROUGHS CREEK 8750 -M 11.3 * -M 19.4 * CASTLE CREEK 8400 .0 -M * 14.7 -M * COLD SPRINGS 9630 1.4 .2 700* 15.7 14.0 112 DEER PARK 9700 17.2 13.5 127 24.0 25.5 94 HOBBS PARK 10100 15.9 15.0 106 18.2 18.6 98 KIRWIN 9550 19.9 10.4 191 22.1 15.4 144 LITTLE WARM 9370 10.9 6.1 179 20.1 16.9 119 OWL CREEK 8975 .0 .0 * 9.4 9.2 102 SOUTH PASS 9040 13.2 10.1 131 19.1 22.1 86 ST. LAWRENCE ALT 8620 .8 .1 800* 12.6 13.1 96 TOGWOTEE PASS 9580 35.0 24.5 143 37.4 29.1 129 TOWNSEND CREEK 8700 2.5 1.2 208 13.9 16.6 84 ----- ----- Basin Index (%) 144 107 BIGHORN BASIN BALD MTN. 9380 31.6 20.7 153 25.3 21.7 117 BEAR TRAP MEADOW 8200 2.4 .0 * 13.9 12.2 114 BONE SPRINGS DIV 9350 26.2 15.9 165 22.0 20.3 108 GRAVE SPRINGS 8550 10.3 6.4 161 15.2 14.7 103 KIRWIN 9550 19.9 10.4 191 22.1 15.4 144 MARQUETTE 8760 15.9 -M * 17.8 -M * MIDDLE POWDER 7760 15.9 8.9 179 17.4 15.8 110 OWL CREEK 8975 .0 .0 * 9.4 9.2 102 POWDER RIVER PASS 9480 13.0 8.3 157 20.0 16.8 119 SHELL CREEK 9580 21.8 16.6 131 21.2 18.1 117 TIMBER CREEK 7950 1.4 .0 * 13.4 11.7 115 ----- ----- Basin Index (%) 163 115 SHOSHONE RIVER BLACKWATER 9780 36.2 24.8 146 34.7 25.3 137 EVENING STAR 9200 42.0 25.3 166 46.5 32.6 143 MARQUETTE 8760 15.9 -M * 17.8 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 19.8 130 YOUNTS PEAK 8350 -M 13.8 * -M 19.0 * ----- ----- Basin Index (%) 156* 138 POWDER RIVER BEAR TRAP MEADOW 8200 2.4 .0 * 13.9 12.2 114 CLOUD PEAK RESERVOIR 9860 25.0 16.3 153 25.4 19.0 134 GRAVE SPRINGS 8550 10.3 6.4 161 15.2 14.7 103 HANSEN SAWMILL 8360 4.8 .0 * 16.1 12.5 129 MIDDLE POWDER 7760 15.9 8.9 179 17.4 15.8 110 POWDER RIVER PASS 9480 13.0 8.3 157 20.0 16.8 119 SOLDIER PARK 8720 9.7 -M * 16.3 -M * ----- ----- Basin Index (%) 179 119 TONGUE RIVER BIG GOOSE 7990 11.8 8.8 134 19.7 16.6 119 BONE SPRINGS DIV 9350 26.2 15.9 165 22.0 20.3 108 BURGESS JUNCTION 7880 17.7 10.6 167 21.0 16.6 127 DOME LAKE 8880 17.1 9.7 176 20.6 18.5 111 LITTLE GOOSE 8870 14.6 -M * 22.7 -M * SUCKER CREEK 8880 18.6 11.3 165 25.2 19.7 128 TIE CREEK 6870 4.8 .2 2400* 19.5 16.8 116 ----- ----- Basin Index (%) 170 118 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.2 14.4 119 ----- ----- Basin Index (%) * 119 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.6 16.2 127 NORTH RAPID CREEK 6130 .0 .0 * 19.6 14.2 138 ----- ----- Basin Index (%) * 132 UPPER N. PLATTE ARAPAHO RIDGE 10960 31.0 21.6 144 34.5 28.2 122 BLACKHALL MTN 9820 39.7 -M * -M -M * COLUMBINE 9160 27.5 8.5 324 -M 30.2 * DIVIDE PEAK 8880 13.0 10.5 124 29.6 26.0 114 JOE WRIGHT 10120 30.9 22.8 136 40.4 32.2 125 LAPRELE CREEK 8375 2.3 .0 * 16.6 16.4 101 MED BOW 10500 -M -M * 48.2 -M * NORTH FRENCH CREEK 10130 40.5 32.1 126 42.1 33.0 128 NEVER SUMMER 10280 28.9 22.1 131 25.0 -M * OLD BATTLE 10000 40.1 35.1 114 43.5 41.5 105 RAWAH 9020 7.8 1.4 557 22.6 18.8 120 SAGE CREEK BASIN 7850 2.6 .0 * 14.5 17.2 84 SAND LAKE 10050 40.3 30.5 132 41.7 31.2 134 SOUTH BRUSH CREEK 8440 1.9 1.5 127 19.5 19.6 99 TOWER 10500 56.2 49.9 113 59.6 47.2 126 WEBBER SPRINGS 9250 20.8 16.4 127 35.7 31.7 113 WILLOW CREEK PASS 9540 15.8 11.4 139 19.0 17.0 112 ZIRKEL 9340 34.1 16.7 204 -M 33.2 * ----- ----- Basin Index (%) 140 116 SWEETWATER DEER PARK 9700 17.2 13.5 127 24.0 25.5 94 LARSEN CREEK 9000 2.9 5.0 58 17.8 -M * SOUTH PASS 9040 13.2 10.1 131 19.1 22.1 86 ----- ----- Basin Index (%) 116 91 LOWER N. PLATTE CASPER MTN. 7900 14.9 9.1 164 20.7 19.9 104 LAPRELE CREEK 8375 2.3 .0 * 16.6 16.4 101 RENO HILL 8400 19.0 7.8 244 27.7 20.8 133 WINDY PEAK 7900 2.4 .0 * 16.7 14.2 118 ----- ----- Basin Index (%) 228 115 LARAMIE RIVER BROOKLYN LAKE 10240 31.1 19.7 158 37.8 26.6 142 CINNABAR PARK 9574 23.2 15.3 152 36.7 29.2 126 CROW CREEK 8330 .9 .0 * 17.6 14.9 118 DEADMAN HILL 10220 28.7 18.3 157 30.2 22.4 135 RAWAH 9020 7.8 1.4 557 22.6 18.8 120 ROACH 9700 20.0 13.9 144 30.8 24.0 128 ----- ----- Basin Index (%) 163 129 S. PLATTE BLACK MOUNTAIN 8920 7.3 -M * -M -M * CROW CREEK 8330 .9 .0 * 17.6 14.9 118 DEADMAN HILL 10220 28.7 18.3 157 30.2 22.4 135 ----- ----- Basin Index (%) 162* 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.9 18.4 108 DIVIDE PEAK 8880 13.0 10.5 124 29.6 26.0 114 ELK RIVER 8700 10.2 3.3 309 26.6 24.2 110 LITTLE SNAKE RIVER 8915 -M 18.0 * -M 34.9 * OLD BATTLE 10000 40.1 35.1 114 43.5 41.5 105 SAGE CREEK BASIN 7850 2.6 .0 * 14.5 17.2 84 SANDSTONE RS 8150 -M .0 * 20.4 22.2 92 WHISKEY PARK 8950 34.8 24.6 141 45.6 33.5 136 ----- ----- Basin Index (%) 137 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.1 7.6 159 17.2 16.5 104 BLIND BULL SUM 8650 36.8 22.0 167 25.8 22.8 113 EAST RIM DIVIDE 7930 1.9 3.9 49 17.5 13.9 126 ELKHART PARK G.S. 9400 17.1 8.5 201 20.3 16.4 124 GROS VENTRE SUMMIT 8750 12.9 8.6 150 17.1 15.7 109 GUNSIGHT PASS 9820 19.7 12.2 161 22.1 17.4 127 KENDALL R.S. 7740 10.4 .0 * 24.8 16.5 150 LOOMIS PARK 8240 16.2 5.9 275 27.5 20.2 136 NEW FORK LAKE 8340 7.2 1.1 655 14.8 13.2 112 POCKET CREEK 9360 12.5 -M * 15.1 -M * SNIDER BASIN 8060 2.2 4.8 46 21.5 16.6 130 SPRING CREEK DIVIDE 9000 36.7 22.6 162 36.4 27.7 131 TRIPLE PEAK 8500 27.4 12.7 216 41.2 29.8 138 ----- ----- Basin Index (%) 183 126 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.8 -M * BUCK PASTURE 9700 8.8 -M * 21.3 -M * EF BLACKS FORK GS 9360 .8 -M * 13.3 -M * HAMS FORK 7840 .4 .0 * 16.7 14.2 118 HEWINTA 9519 1.4 .1 1400* 18.3 17.5 105 HICKERSON PARK 9145 2.1 .0 * 12.1 13.2 92 HOLE-IN-ROCK 9150 .7 .0 * 13.3 12.7 105 INDIAN CREEK 9425 30.7 21.2 145 30.7 26.6 115 KELLEY R.S. 8180 11.8 6.4 184 23.5 21.5 109 SPIRIT LK 10235 5.8 -M * 18.7 -M * STEEL CREEK PARK 10200 21.5 16.5 130 21.1 20.7 102 ----- ----- Basin Index (%) 155* 107 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 15.1 10.2 148 24.4 23.1 106 BURTS MILLER RANCH 8000 .1 -M * 8.7 -M * CHALK CREEK #1 8993 17.3 19.4 89 27.6 30.4 91 HAYDEN FORK 9212 2.3 3.1 74 25.2 25.5 99 KELLEY R.S. 8180 11.8 6.4 184 23.5 21.5 109 LILY LAKE 9156 5.9 1.2 492* 18.7 21.0 89 MONTE CRISTO 8960 20.6 19.0 108 29.9 31.2 96 SALT RIVER SUMMIT 7760 7.8 1.5 520 22.2 19.5 114 ----- ----- Basin Index (%) 133 100 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.