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 SUNDAY: MAY 4 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 14.6 7.8 187 28.8 23.1 125 BLACK BEAR 8170 45.9 37.3 123 45.7 42.2 108 BLIND BULL SUM 8650 36.6 22.8 161 24.7 21.6 114 COTTONWOOD CREEK 7670 24.0 14.4 167 37.2 27.8 134 EAST RIM DIVIDE 7930 7.3 7.7 95 16.6 13.1 127 GRAND TARGHEE 9260 52.8 45.7 116 -M 35.2 * GRANITE CREEK 6770 16.9 7.6 222 26.2 21.6 121 GRASSY LAKE 7265 36.8 27.9 132 44.1 39.7 111 GROS VENTRE SUMMIT 8750 13.5 11.1 122 15.7 14.9 105 GUNSIGHT PASS 9820 19.7 12.0 164 20.8 16.3 128 LEWIS LAKE DIVIDE 7850 40.7 29.6 138 44.1 39.0 113 PHILLIPS BENCH 8200 36.1 24.5 147 38.4 31.0 124 SALT RIVER SUMMIT 7760 10.3 7.4 139 20.8 18.6 112 SNAKE RIVER STATION 6920 10.6 5.6 189 28.4 25.0 114 SPRING CREEK DIVIDE 9000 37.4 24.3 154 34.6 26.5 131 THUMB DIVIDE 7980 17.1 10.8 158 22.1 21.2 104 TOGWOTEE PASS 9580 33.1 24.7 134 36.1 27.7 130 TWO OCEAN PLATEAU 9240 39.2 29.9 131 37.7 30.5 124 WILLOW CREEK 8380 36.1 22.0 164 44.7 38.1 117 YOUNTS PEAK 8350 -M 15.8 * -M 18.0 * ----- ----- Basin Index (%) 142 119 MADISON-GALLATIN BLACK BEAR 8170 45.9 37.3 123 45.7 42.2 108 CANYON 7870 13.7 9.1 151 19.2 18.2 105 MADISON PLATEAU 7750 25.8 20.9 123 29.1 29.2 100 WEST YELLOWSTONE 6700 .3 .2 150* 18.6 16.2 115 WHISKEY CREEK 6800 16.2 13.3 122 24.6 22.6 109 ----- ----- Basin Index (%) 126 107 YELLOWSTONE BEARTOOTH LAKE 9360 31.1 22.7 137 33.4 22.2 150 BURNT MTN 5880 2.3 .0 * 22.9 16.2 141 CANYON 7870 13.7 9.1 151 19.2 18.2 105 COLE CREEK 7850 23.6 16.7 141 19.4 16.7 116 EVENING STAR 9200 41.5 24.9 167 45.0 30.8 146 FISHER CREEK 9100 48.4 32.7 148 44.5 35.5 125 NORTHEAST ENTRANCE 7350 8.0 1.6 500 18.1 14.0 129 PARKER PEAK 9400 37.9 21.2 179 33.7 20.3 166 SYLVAN LAKE 8420 24.2 19.0 127 33.5 25.4 132 THUMB DIVIDE 7980 17.1 10.8 158 22.1 21.2 104 TWO OCEAN PLATEAU 9240 39.2 29.9 131 37.7 30.5 124 WHITE MILL 8700 35.2 24.0 147 32.9 26.6 124 WOLVERINE 7650 10.4 1.1 945 20.2 14.0 144 ----- ----- Basin Index (%) 156 131 WIND RIVER BURROUGHS CREEK 8750 -M 12.6 * -M 18.2 * CASTLE CREEK 8400 2.7 -M * 13.3 -M * COLD SPRINGS 9630 3.7 1.4 264 13.8 12.7 109 DEER PARK 9700 -M 15.4 * 21.8 23.8 92 HOBBS PARK 10100 14.3 16.0 89 15.8 17.0 93 KIRWIN 9550 19.7 10.6 186 19.9 14.1 141 LITTLE WARM 9370 11.3 8.1 140 18.5 15.6 119 OWL CREEK 8975 .1 .6 17 8.8 8.1 109 SOUTH PASS 9040 13.6 14.1 96 16.9 20.7 82 ST. LAWRENCE ALT 8620 .3 2.0 15 10.4 11.8 88 TOGWOTEE PASS 9580 33.1 24.7 134 36.1 27.7 130 TOWNSEND CREEK 8700 2.9 6.6 44 11.5 15.2 76 ----- ----- Basin Index (%) 118 104 BIGHORN BASIN BALD MTN. 9380 30.1 20.4 148 23.4 20.0 117 BEAR TRAP MEADOW 8200 5.3 .4 1325* 12.8 10.9 117 BONE SPRINGS DIV 9350 23.8 16.4 145 20.5 18.6 110 GRAVE SPRINGS 8550 12.0 9.3 129 14.4 13.1 110 KIRWIN 9550 19.7 10.6 186 19.9 14.1 141 MARQUETTE 8760 14.7 -M * 15.6 -M * MIDDLE POWDER 7760 17.8 11.4 156 16.7 14.4 116 OWL CREEK 8975 .1 .6 17 8.8 8.1 109 POWDER RIVER PASS 9480 13.3 9.1 146 18.7 15.4 121 SHELL CREEK 9580 19.1 16.0 119 19.5 16.6 117 TIMBER CREEK 7950 .2 2.5 8 11.1 10.2 109 ----- ----- Basin Index (%) 146 117 SHOSHONE RIVER BLACKWATER 9780 35.5 25.8 138 33.3 23.8 140 EVENING STAR 9200 41.5 24.9 167 45.0 30.8 146 MARQUETTE 8760 14.7 -M * 15.6 -M * SYLVAN ROAD 7120 3.6 4.1 88 24.5 18.8 130 YOUNTS PEAK 8350 -M 15.8 * -M 18.0 * ----- ----- Basin Index (%) 147 140 POWDER RIVER BEAR TRAP MEADOW 8200 5.3 .4 1325* 12.8 10.9 117 CLOUD PEAK RESERVOIR 9860 23.7 16.3 145 23.1 17.0 136 GRAVE SPRINGS 8550 12.0 9.3 129 14.4 13.1 110 HANSEN SAWMILL 8360 6.1 1.7 359 14.4 11.1 130 MIDDLE POWDER 7760 17.8 11.4 156 16.7 14.4 116 POWDER RIVER PASS 9480 13.3 9.1 146 18.7 15.4 121 SOLDIER PARK 8720 10.6 -M * 14.5 -M * ----- ----- Basin Index (%) 162 122 TONGUE RIVER BIG GOOSE 7990 11.5 9.4 122 18.0 14.4 125 BONE SPRINGS DIV 9350 23.8 16.4 145 20.5 18.6 110 BURGESS JUNCTION 7880 17.6 11.8 149 19.6 15.0 131 DOME LAKE 8880 16.0 11.3 142 18.6 16.7 111 LITTLE GOOSE 8870 14.2 -M * 20.6 -M * SUCKER CREEK 8880 18.0 11.9 151 23.5 17.7 133 TIE CREEK 6870 6.1 2.5 244 18.1 14.7 123 ----- ----- Basin Index (%) 147 122 BELLE FOURCHE COLE CANYON 5910 3.2 .0 * 16.1 12.4 130 ----- ----- Basin Index (%) * 130 CHEYENNE RIVER BASIN BLIND PARK 6890 .7 .2 350* 19.3 14.6 132 NORTH RAPID CREEK 6130 2.4 .0 * 18.7 12.6 148 ----- ----- Basin Index (%) 1550* 140 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.4 22.3 132 30.8 26.6 116 BLACKHALL MTN 9820 38.8 -M * -M -M * COLUMBINE 9160 28.5 17.1 167 -M 28.9 * DIVIDE PEAK 8880 13.4 17.5 77 25.5 24.8 103 JOE WRIGHT 10120 29.5 22.9 129 37.5 30.4 123 LAPRELE CREEK 8375 5.3 5.4 98 14.5 15.3 95 MED BOW 10500 -M -M * 44.8 -M * NORTH FRENCH CREEK 10130 40.1 32.7 123 39.6 31.2 127 NEVER SUMMER 10280 28.7 21.8 132 23.8 -M * OLD BATTLE 10000 35.7 34.8 103 40.2 39.7 101 RAWAH 9020 8.6 4.8 179 20.6 17.6 117 SAGE CREEK BASIN 7850 .1 .8 12* 13.8 16.4 84 SAND LAKE 10050 37.0 31.6 117 37.1 29.5 126 SOUTH BRUSH CREEK 8440 6.9 7.9 87 18.4 18.2 101 TOWER 10500 54.7 50.7 108 56.1 45.3 124 WEBBER SPRINGS 9250 21.3 21.1 101 31.2 30.3 103 WILLOW CREEK PASS 9540 16.5 14.5 114 17.3 16.0 108 ZIRKEL 9340 36.7 20.7 177 -M 31.3 * ----- ----- Basin Index (%) 120 112 SWEETWATER DEER PARK 9700 -M 15.4 * 21.8 23.8 92 LARSEN CREEK 9000 5.1 8.3 61 16.6 -M * SOUTH PASS 9040 13.6 14.1 96 16.9 20.7 82 ----- ----- Basin Index (%) 83 87 LOWER N. PLATTE CASPER MTN. 7900 16.8 12.5 134 19.0 18.4 103 LAPRELE CREEK 8375 5.3 5.4 98 14.5 15.3 95 RENO HILL 8400 18.3 12.1 151 25.0 19.3 130 WINDY PEAK 7900 5.3 3.1 171 14.5 13.2 110 ----- ----- Basin Index (%) 138 110 LARAMIE RIVER BROOKLYN LAKE 10240 30.7 23.0 133 33.9 25.1 135 CINNABAR PARK 9574 24.0 18.8 128 32.4 27.3 119 CROW CREEK 8330 .0 .0 * 14.4 13.7 105 DEADMAN HILL 10220 27.7 19.1 145 27.1 21.0 129 RAWAH 9020 8.6 4.8 179 20.6 17.6 117 ROACH 9700 19.0 17.1 111 26.9 22.6 119 ----- ----- Basin Index (%) 133 122 S. PLATTE BLACK MOUNTAIN 8920 9.1 -M * -M -M * CROW CREEK 8330 .0 .0 * 14.4 13.7 105 DEADMAN HILL 10220 27.7 19.1 145 27.1 21.0 129 ----- ----- Basin Index (%) 145* 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.4 110 DIVIDE PEAK 8880 13.4 17.5 77 25.5 24.8 103 ELK RIVER 8700 13.5 12.0 112 24.9 23.1 108 LITTLE SNAKE RIVER 8915 23.8 21.7 110 37.3 33.2 112 OLD BATTLE 10000 35.7 34.8 103 40.2 39.7 101 SAGE CREEK BASIN 7850 .1 .8 12* 13.8 16.4 84 SANDSTONE RS 8150 1.9 4.6 41 19.4 21.0 92 WHISKEY PARK 8950 36.2 26.9 135 43.0 32.0 134 ----- ----- Basin Index (%) 105 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.8 9.4 136 15.6 15.5 101 BLIND BULL SUM 8650 36.6 22.8 161 24.7 21.6 114 EAST RIM DIVIDE 7930 7.3 7.7 95 16.6 13.1 127 ELKHART PARK G.S. 9400 16.8 10.6 158 18.3 15.2 120 GROS VENTRE SUMMIT 8750 13.5 11.1 122 15.7 14.9 105 GUNSIGHT PASS 9820 19.7 12.0 164 20.8 16.3 128 KENDALL R.S. 7740 13.9 2.6 535 23.9 15.7 152 LOOMIS PARK 8240 18.6 10.0 186 26.4 19.2 138 NEW FORK LAKE 8340 9.5 5.5 173 14.0 12.3 114 POCKET CREEK 9360 12.0 -M * 13.6 -M * SNIDER BASIN 8060 10.3 8.5 121 20.5 15.8 130 SPRING CREEK DIVIDE 9000 37.4 24.3 154 34.6 26.5 131 TRIPLE PEAK 8500 29.8 16.3 183 39.3 28.2 139 ----- ----- Basin Index (%) 161 126 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.4 -M * 15.2 -M * BUCK PASTURE 9700 10.1 -M * 19.6 -M * EF BLACKS FORK GS 9360 3.6 -M * 11.7 -M * HAMS FORK 7840 5.2 1.5 347 15.1 13.3 114 HEWINTA 9519 4.2 4.2 100 16.2 16.5 98 HICKERSON PARK 9145 .2 3.2 6 9.6 12.2 79 HOLE-IN-ROCK 9150 .0 1.7 0 11.1 11.8 94 INDIAN CREEK 9425 30.3 22.1 137 28.5 25.3 113 KELLEY R.S. 8180 12.9 10.4 124 21.8 20.5 106 SPIRIT LK 10235 6.9 -M * 15.8 -M * STEEL CREEK PARK 10200 20.8 17.4 120 18.6 19.5 95 ----- ----- Basin Index (%) 122 102 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.2 -M * BUG LAKE 7950 17.1 13.8 124 22.3 22.0 101 BURTS MILLER RANCH 8000 .1 -M * 7.9 -M * CHALK CREEK #1 8993 18.9 23.4 81 25.9 28.9 90 HAYDEN FORK 9212 6.7 8.6 78 24.1 24.1 100 KELLEY R.S. 8180 12.9 10.4 124 21.8 20.5 106 LILY LAKE 9156 8.6 9.7 89 17.4 19.9 87 MONTE CRISTO 8960 21.5 25.3 85 28.2 29.7 95 SALT RIVER SUMMIT 7760 10.3 7.4 139 20.8 18.6 112 ----- ----- Basin Index (%) 97 98 ----------------------------------------------------------------------------- -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.