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 SATURDAY: MAY 10 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 13.1 4.4 298 29.8 23.6 126 BLACK BEAR 8170 45.5 36.8 124 47.8 43.1 111 BLIND BULL SUM 8650 38.1 22.4 170 25.6 22.2 115 COTTONWOOD CREEK 7670 23.9 12.8 187 38.3 28.8 133 EAST RIM DIVIDE 7930 4.6 5.9 78 17.3 13.5 128 GRAND TARGHEE 9260 53.3 46.4 115 44.6 36.1 124 GRANITE CREEK 6770 14.9 5.5 271 27.4 22.1 124 GRASSY LAKE 7265 34.0 25.9 131 45.8 40.6 113 GROS VENTRE SUMMIT 8750 13.4 9.6 140 16.8 15.4 109 GUNSIGHT PASS 9820 19.8 12.1 164 21.9 16.9 130 LEWIS LAKE DIVIDE 7850 40.8 29.3 139 45.8 39.7 115 PHILLIPS BENCH 8200 35.5 23.1 154 39.4 31.8 124 SALT RIVER SUMMIT 7760 8.1 4.5 180 21.7 19.1 114 SNAKE RIVER STATION 6920 8.2 2.5 328 29.7 25.6 116 SPRING CREEK DIVIDE 9000 35.8 23.7 151 35.6 27.1 131 THUMB DIVIDE 7980 15.7 8.4 187 23.2 21.8 106 TOGWOTEE PASS 9580 34.4 25.4 135 37.3 28.5 131 TWO OCEAN PLATEAU 9240 40.1 29.6 135 39.0 31.2 125 WILLOW CREEK 8380 33.8 21.1 160 46.1 39.2 118 YOUNTS PEAK 8350 -M 15.4 * -M 18.5 * ----- ----- Basin Index (%) 147 120 MADISON-GALLATIN BLACK BEAR 8170 45.5 36.8 124 47.8 43.1 111 CANYON 7870 12.6 7.4 170 19.9 18.8 106 MADISON PLATEAU 7750 26.0 20.0 130 30.5 30.0 102 WEST YELLOWSTONE 6700 .1 .0 * 19.4 16.6 117 WHISKEY CREEK 6800 15.4 10.7 144 25.8 23.1 112 ----- ----- Basin Index (%) 133 109 YELLOWSTONE BEARTOOTH LAKE 9360 34.1 23.0 148 34.3 23.1 148 BURNT MTN 5880 .4 .0 * 24.6 17.4 141 CANYON 7870 12.6 7.4 170 19.9 18.8 106 COLE CREEK 7850 25.1 17.2 146 21.1 18.0 117 EVENING STAR 9200 41.6 25.4 164 46.0 31.8 145 FISHER CREEK 9100 48.7 34.3 142 46.1 36.6 126 NORTHEAST ENTRANCE 7350 6.1 .9 678* 19.1 14.6 131 PARKER PEAK 9400 38.2 22.0 174 34.9 21.2 165 SYLVAN LAKE 8420 23.6 18.1 130 34.7 26.3 132 THUMB DIVIDE 7980 15.7 8.4 187 23.2 21.8 106 TWO OCEAN PLATEAU 9240 40.1 29.6 135 39.0 31.2 125 WHITE MILL 8700 36.7 24.7 149 34.5 27.5 125 WOLVERINE 7650 8.3 .0 * 20.9 14.6 143 ----- ----- Basin Index (%) 157 131 WIND RIVER BURROUGHS CREEK 8750 -M 11.6 * -M 18.8 * CASTLE CREEK 8400 1.0 -M * 14.5 -M * COLD SPRINGS 9630 2.3 1.5 153 14.8 13.4 110 DEER PARK 9700 -M 14.4 * 22.4 24.6 91 HOBBS PARK 10100 14.6 15.9 92 16.5 17.8 93 KIRWIN 9550 19.5 10.9 179 21.1 14.8 143 LITTLE WARM 9370 11.1 6.6 168 19.7 16.2 122 OWL CREEK 8975 .1 .5 20* 9.1 8.6 106 SOUTH PASS 9040 11.9 11.8 101 17.1 21.3 80 ST. LAWRENCE ALT 8620 .2 1.0 20 11.4 12.4 92 TOGWOTEE PASS 9580 34.4 25.4 135 37.3 28.5 131 TOWNSEND CREEK 8700 1.1 3.9 28 11.8 15.8 75 ----- ----- Basin Index (%) 123 104 BIGHORN BASIN BALD MTN. 9380 30.7 20.6 149 24.5 21.1 116 BEAR TRAP MEADOW 8200 3.1 .0 * 13.1 11.6 113 BONE SPRINGS DIV 9350 25.4 16.6 153 21.3 19.7 108 GRAVE SPRINGS 8550 10.3 7.7 134 14.6 14.1 104 KIRWIN 9550 19.5 10.9 179 21.1 14.8 143 MARQUETTE 8760 14.8 -M * 16.9 -M * MIDDLE POWDER 7760 15.7 10.8 145 16.8 15.4 109 OWL CREEK 8975 .1 .5 20* 9.1 8.6 106 POWDER RIVER PASS 9480 12.8 9.0 142 19.3 16.3 118 SHELL CREEK 9580 20.9 16.8 124 20.5 17.6 116 TIMBER CREEK 7950 1.4 1.5 93 12.9 11.0 117 ----- ----- Basin Index (%) 148 115 SHOSHONE RIVER BLACKWATER 9780 36.0 24.8 145 34.2 24.6 139 EVENING STAR 9200 41.6 25.4 164 46.0 31.8 145 MARQUETTE 8760 14.8 -M * 16.9 -M * SYLVAN ROAD 7120 .0 1.5 0 25.6 19.3 133 YOUNTS PEAK 8350 -M 15.4 * -M 18.5 * ----- ----- Basin Index (%) 150 140 POWDER RIVER BEAR TRAP MEADOW 8200 3.1 .0 * 13.1 11.6 113 CLOUD PEAK RESERVOIR 9860 23.7 16.8 141 24.3 18.2 134 GRAVE SPRINGS 8550 10.3 7.7 134 14.6 14.1 104 HANSEN SAWMILL 8360 4.5 1.2 375 15.5 11.9 130 MIDDLE POWDER 7760 15.7 10.8 145 16.8 15.4 109 POWDER RIVER PASS 9480 12.8 9.0 142 19.3 16.3 118 SOLDIER PARK 8720 9.4 -M * 15.7 -M * ----- ----- Basin Index (%) 154 118 TONGUE RIVER BIG GOOSE 7990 11.1 10.4 107 18.7 15.7 119 BONE SPRINGS DIV 9350 25.4 16.6 153 21.3 19.7 108 BURGESS JUNCTION 7880 17.2 11.4 151 20.1 16.1 125 DOME LAKE 8880 16.4 11.2 146 19.5 17.9 109 LITTLE GOOSE 8870 13.7 -M * 21.7 -M * SUCKER CREEK 8880 17.8 12.6 141 24.3 19.0 128 TIE CREEK 6870 4.9 1.5 327 19.1 15.9 120 ----- ----- Basin Index (%) 146 118 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.3 13.5 128 ----- ----- Basin Index (%) * 128 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.3 15.5 131 NORTH RAPID CREEK 6130 .0 .0 * 19.4 13.4 145 ----- ----- Basin Index (%) * 137 UPPER N. PLATTE ARAPAHO RIDGE 10960 27.5 22.4 123 31.3 27.5 114 BLACKHALL MTN 9820 35.8 -M * -M -M * COLUMBINE 9160 25.3 12.7 199 -M 29.6 * DIVIDE PEAK 8880 9.2 14.3 64 25.9 25.5 102 JOE WRIGHT 10120 28.1 23.2 121 38.0 31.4 121 LAPRELE CREEK 8375 1.1 2.8 39 14.6 16.1 91 MED BOW 10500 -M -M * 45.9 -M * NORTH FRENCH CREEK 10130 38.3 32.7 117 40.2 32.4 124 NEVER SUMMER 10280 27.5 22.2 124 24.1 -M * OLD BATTLE 10000 35.5 36.8 96 40.7 40.8 100 RAWAH 9020 6.3 2.7 233 21.2 18.2 116 SAGE CREEK BASIN 7850 .1 .0 * 14.1 16.9 83 SAND LAKE 10050 36.2 31.8 114 37.5 30.5 123 SOUTH BRUSH CREEK 8440 1.9 5.2 37 18.5 19.1 97 TOWER 10500 53.5 51.4 104 57.1 46.4 123 WEBBER SPRINGS 9250 16.8 19.4 87 31.7 31.1 102 WILLOW CREEK PASS 9540 14.4 13.4 107 17.5 16.5 106 ZIRKEL 9340 30.9 19.7 157 -M 32.4 * ----- ----- Basin Index (%) 113 110 SWEETWATER DEER PARK 9700 -M 14.4 * 22.4 24.6 91 LARSEN CREEK 9000 3.4 6.5 52 17.6 -M * SOUTH PASS 9040 11.9 11.8 101 17.1 21.3 80 ----- ----- Basin Index (%) 84 86 LOWER N. PLATTE CASPER MTN. 7900 12.3 11.4 108 19.1 19.4 98 LAPRELE CREEK 8375 1.1 2.8 39 14.6 16.1 91 RENO HILL 8400 16.6 10.5 158 25.2 20.1 125 WINDY PEAK 7900 1.1 .8 138 14.9 13.9 107 ----- ----- Basin Index (%) 122 106 LARAMIE RIVER BROOKLYN LAKE 10240 28.2 21.4 132 34.1 26.0 131 CINNABAR PARK 9574 21.5 17.4 124 32.8 28.2 116 CROW CREEK 8330 .0 .0 * 15.2 14.3 106 DEADMAN HILL 10220 26.9 18.5 145 28.2 21.7 130 RAWAH 9020 6.3 2.7 233 21.2 18.2 116 ROACH 9700 16.7 15.9 105 27.5 23.3 118 ----- ----- Basin Index (%) 131 121 S. PLATTE BLACK MOUNTAIN 8920 6.0 -M * -M -M * CROW CREEK 8330 .0 .0 * 15.2 14.3 106 DEADMAN HILL 10220 26.9 18.5 145 28.2 21.7 130 ----- ----- Basin Index (%) 145* 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.4 18.0 108 DIVIDE PEAK 8880 9.2 14.3 64 25.9 25.5 102 ELK RIVER 8700 9.4 7.8 121 25.3 23.7 107 LITTLE SNAKE RIVER 8915 -M 20.4 * -M 34.4 * OLD BATTLE 10000 35.5 36.8 96 40.7 40.8 100 SAGE CREEK BASIN 7850 .1 .0 * 14.1 16.9 83 SANDSTONE RS 8150 .0 1.9 0 19.6 21.8 90 WHISKEY PARK 8950 39.4 26.8 147 44.0 32.9 134 ----- ----- Basin Index (%) 107 105 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.4 8.6 144 16.9 16.1 105 BLIND BULL SUM 8650 38.1 22.4 170 25.6 22.2 115 EAST RIM DIVIDE 7930 4.6 5.9 78 17.3 13.5 128 ELKHART PARK G.S. 9400 16.9 9.6 176 19.7 15.8 125 GROS VENTRE SUMMIT 8750 13.4 9.6 140 16.8 15.4 109 GUNSIGHT PASS 9820 19.8 12.1 164 21.9 16.9 130 KENDALL R.S. 7740 12.4 .0 * 24.8 16.2 153 LOOMIS PARK 8240 17.0 7.3 233 27.2 19.7 138 NEW FORK LAKE 8340 8.3 2.6 319 14.5 12.8 113 POCKET CREEK 9360 12.4 -M * 14.8 -M * SNIDER BASIN 8060 5.0 7.4 68 20.8 16.2 128 SPRING CREEK DIVIDE 9000 35.8 23.7 151 35.6 27.1 131 TRIPLE PEAK 8500 27.7 14.9 186 40.3 29.1 138 ----- ----- Basin Index (%) 170 127 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 15.8 -M * BUCK PASTURE 9700 8.4 -M * 20.4 -M * EF BLACKS FORK GS 9360 .8 -M * 11.9 -M * HAMS FORK 7840 2.5 .1 2500* 16.0 13.8 116 HEWINTA 9519 .0 2.0 0 16.9 17.1 99 HICKERSON PARK 9145 .1 .1 100* 9.7 12.8 76 HOLE-IN-ROCK 9150 .0 .0 * 11.2 12.3 91 INDIAN CREEK 9425 29.9 21.0 142 29.7 26.0 114 KELLEY R.S. 8180 11.9 8.4 142 22.9 21.0 109 SPIRIT LK 10235 3.4 -M * 15.8 -M * STEEL CREEK PARK 10200 19.6 17.7 111 19.2 20.1 96 ----- ----- Basin Index (%) 130* 102 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.9 -M * BUG LAKE 7950 16.1 12.2 132 24.3 22.6 108 BURTS MILLER RANCH 8000 .2 -M * 8.4 -M * CHALK CREEK #1 8993 17.2 21.5 80 27.1 29.7 91 HAYDEN FORK 9212 4.1 5.9 69 24.9 24.8 100 KELLEY R.S. 8180 11.9 8.4 142 22.9 21.0 109 LILY LAKE 9156 6.2 5.4 115 18.3 20.5 89 MONTE CRISTO 8960 20.5 21.5 95 29.5 30.6 96 SALT RIVER SUMMIT 7760 8.1 4.5 180 21.7 19.1 114 ----- ----- Basin Index (%) 106 100 ----------------------------------------------------------------------------- -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.