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 18 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 7.3 .0 * 30.3 24.3 125 BLACK BEAR 8170 45.9 34.8 132 48.4 44.4 109 BLIND BULL SUM 8650 38.2 21.0 182 26.1 23.1 113 COTTONWOOD CREEK 7670 20.8 8.2 254 39.6 29.8 133 EAST RIM DIVIDE 7930 .0 1.8 0 17.8 14.0 127 GRAND TARGHEE 9260 51.3 43.4 118 44.8 36.7 122 GRANITE CREEK 6770 10.8 .0 * 27.6 22.8 121 GRASSY LAKE 7265 29.2 19.5 150 46.5 41.7 112 GROS VENTRE SUMMIT 8750 10.8 7.0 154 16.9 16.0 106 GUNSIGHT PASS 9820 18.5 11.4 162 22.1 17.6 126 LEWIS LAKE DIVIDE 7850 37.4 23.8 157 46.9 40.8 115 PHILLIPS BENCH 8200 31.2 20.5 152 39.6 32.7 121 SALT RIVER SUMMIT 7760 3.9 .0 * 22.3 19.8 113 SNAKE RIVER STATION 6920 1.8 .0 * 30.4 26.3 116 SPRING CREEK DIVIDE 9000 35.1 21.5 163 36.5 27.9 131 THUMB DIVIDE 7980 11.2 2.8 400 23.6 22.6 104 TOGWOTEE PASS 9580 32.2 23.5 137 37.5 29.5 127 TWO OCEAN PLATEAU 9240 41.1 28.7 143 39.9 32.6 122 WILLOW CREEK 8380 30.6 18.2 168 47.3 40.6 117 YOUNTS PEAK 8350 -M 12.5 * -M 19.3 * ----- ----- Basin Index (%) 160 119 MADISON-GALLATIN BLACK BEAR 8170 45.9 34.8 132 48.4 44.4 109 CANYON 7870 9.1 3.5 260 20.3 19.7 103 MADISON PLATEAU 7750 22.7 15.3 148 30.8 31.2 99 WEST YELLOWSTONE 6700 .0 .0 * 19.6 17.4 113 WHISKEY CREEK 6800 12.0 6.9 174 26.1 24.1 108 ----- ----- Basin Index (%) 148 106 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 22.1 150 34.8 24.0 145 BURNT MTN 5880 .2 .0 * 26.0 18.9 138 CANYON 7870 9.1 3.5 260 20.3 19.7 103 COLE CREEK 7850 25.7 16.7 154 22.7 19.3 118 EVENING STAR 9200 36.8 24.5 150 46.5 33.1 140 FISHER CREEK 9100 46.9 33.3 141 46.9 38.1 123 NORTHEAST ENTRANCE 7350 .9 .0 * 19.4 15.3 127 PARKER PEAK 9400 37.4 20.6 182 35.5 22.2 160 SYLVAN LAKE 8420 21.3 15.9 134 35.4 27.3 130 THUMB DIVIDE 7980 11.2 2.8 400 23.6 22.6 104 TWO OCEAN PLATEAU 9240 41.1 28.7 143 39.9 32.6 122 WHITE MILL 8700 35.7 23.2 154 35.0 28.7 122 WOLVERINE 7650 1.5 .0 * 21.2 15.4 138 ----- ----- Basin Index (%) 157 128 WIND RIVER BURROUGHS CREEK 8750 -M 10.3 * -M 19.7 * CASTLE CREEK 8400 .0 -M * 14.8 -M * COLD SPRINGS 9630 .2 .0 * 15.3 14.3 107 DEER PARK 9700 -M 11.8 * 24.2 25.9 93 HOBBS PARK 10100 15.4 14.0 110 18.2 19.1 95 KIRWIN 9550 18.2 9.3 196 22.1 15.7 141 LITTLE WARM 9370 9.1 4.2 217 20.1 17.2 117 OWL CREEK 8975 .1 .0 * 9.5 9.5 100 SOUTH PASS 9040 11.9 8.5 140 19.2 22.3 86 ST. LAWRENCE ALT 8620 .1 .0 * 12.4 13.4 93 TOGWOTEE PASS 9580 32.2 23.5 137 37.5 29.5 127 TOWNSEND CREEK 8700 1.0 .2 500* 14.4 17.0 85 ----- ----- Basin Index (%) 148* 105 BIGHORN BASIN BALD MTN. 9380 31.6 20.0 158 25.4 21.9 116 BEAR TRAP MEADOW 8200 .1 .0 * 14.1 12.5 113 BONE SPRINGS DIV 9350 25.3 15.0 169 22.3 20.7 108 GRAVE SPRINGS 8550 9.2 4.4 209 15.4 14.9 103 KIRWIN 9550 18.2 9.3 196 22.1 15.7 141 MARQUETTE 8760 14.5 -M * 17.9 -M * MIDDLE POWDER 7760 13.9 7.0 199 17.5 16.2 108 OWL CREEK 8975 .1 .0 * 9.5 9.5 100 POWDER RIVER PASS 9480 13.1 6.8 193 20.2 17.0 119 SHELL CREEK 9580 21.6 15.8 137 21.3 18.4 116 TIMBER CREEK 7950 .2 .0 * 13.5 12.0 112 ----- ----- Basin Index (%) 170 114 SHOSHONE RIVER BLACKWATER 9780 35.4 24.8 143 34.8 25.7 135 EVENING STAR 9200 36.8 24.5 150 46.5 33.1 140 MARQUETTE 8760 14.5 -M * 17.9 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.1 128 YOUNTS PEAK 8350 -M 12.5 * -M 19.3 * ----- ----- Basin Index (%) 146* 136 POWDER RIVER BEAR TRAP MEADOW 8200 .1 .0 * 14.1 12.5 113 CLOUD PEAK RESERVOIR 9860 25.1 15.5 162 26.0 19.4 134 GRAVE SPRINGS 8550 9.2 4.4 209 15.4 14.9 103 HANSEN SAWMILL 8360 3.7 .0 * 16.2 12.7 128 MIDDLE POWDER 7760 13.9 7.0 199 17.5 16.2 108 POWDER RIVER PASS 9480 13.1 6.8 193 20.2 17.0 119 SOLDIER PARK 8720 9.2 -M * 16.5 -M * ----- ----- Basin Index (%) 193 118 TONGUE RIVER BIG GOOSE 7990 11.5 6.6 174 20.0 17.1 117 BONE SPRINGS DIV 9350 25.3 15.0 169 22.3 20.7 108 BURGESS JUNCTION 7880 16.5 9.3 177 21.2 16.8 126 DOME LAKE 8880 16.9 7.8 217 20.9 18.9 111 LITTLE GOOSE 8870 14.5 -M * 23.2 -M * SUCKER CREEK 8880 18.0 9.7 186 25.6 20.0 128 TIE CREEK 6870 3.4 .0 * 19.9 17.2 116 ----- ----- Basin Index (%) 189 117 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.6 14.7 120 ----- ----- Basin Index (%) * 120 CHEYENNE RIVER BASIN BLIND PARK 6890 .1 .0 * 20.8 16.5 126 NORTH RAPID CREEK 6130 .0 .0 * 20.0 14.4 139 ----- ----- Basin Index (%) * 132 UPPER N. PLATTE ARAPAHO RIDGE 10960 31.0 19.8 157 34.6 28.4 122 BLACKHALL MTN 9820 39.4 -M * -M -M * COLUMBINE 9160 24.7 5.2 475 -M 30.5 * DIVIDE PEAK 8880 10.9 7.7 142 29.8 26.3 113 JOE WRIGHT 10120 32.6 21.9 149 41.2 32.6 126 LAPRELE CREEK 8375 1.6 .0 * 16.8 16.8 100 MED BOW 10500 -M -M * 48.4 -M * NORTH FRENCH CREEK 10130 40.0 30.8 130 42.3 33.5 126 NEVER SUMMER 10280 29.5 21.3 138 25.9 -M * OLD BATTLE 10000 40.1 33.4 120 43.7 41.9 104 RAWAH 9020 6.8 .7 971* 23.2 18.8 123 SAGE CREEK BASIN 7850 .1 .0 * 14.6 17.2 85 SAND LAKE 10050 40.4 28.8 140 41.8 31.7 132 SOUTH BRUSH CREEK 8440 .1 .4 25* 19.7 19.9 99 TOWER 10500 55.9 48.6 115 60.4 47.6 127 WEBBER SPRINGS 9250 20.2 13.9 145 35.9 32.0 112 WILLOW CREEK PASS 9540 15.2 10.2 149 19.3 17.2 112 ZIRKEL 9340 33.0 13.0 254 -M 33.3 * ----- ----- Basin Index (%) 149 116 SWEETWATER DEER PARK 9700 -M 11.8 * 24.2 25.9 93 LARSEN CREEK 9000 .0 4.2 0 17.9 -M * SOUTH PASS 9040 11.9 8.5 140 19.2 22.3 86 ----- ----- Basin Index (%) 94 90 LOWER N. PLATTE CASPER MTN. 7900 14.3 6.4 223 21.1 20.3 104 LAPRELE CREEK 8375 1.6 .0 * 16.8 16.8 100 RENO HILL 8400 18.8 5.6 336 28.2 21.2 133 WINDY PEAK 7900 1.2 .0 * 16.9 14.7 115 ----- ----- Basin Index (%) 299 114 LARAMIE RIVER BROOKLYN LAKE 10240 30.1 18.0 167 37.9 27.0 140 CINNABAR PARK 9574 21.5 13.8 156 36.7 29.4 125 CROW CREEK 8330 .6 .0 * 17.8 15.0 119 DEADMAN HILL 10220 28.4 17.6 161 30.5 22.8 134 RAWAH 9020 6.8 .7 971* 23.2 18.8 123 ROACH 9700 19.3 12.6 153 30.9 24.5 126 ----- ----- Basin Index (%) 170 129 S. PLATTE BLACK MOUNTAIN 8920 5.5 -M * 19.0 -M * CROW CREEK 8330 .6 .0 * 17.8 15.0 119 DEADMAN HILL 10220 28.4 17.6 161 30.5 22.8 134 ----- ----- Basin Index (%) 165* 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.5 109 DIVIDE PEAK 8880 10.9 7.7 142 29.8 26.3 113 ELK RIVER 8700 8.1 .3 2700* 26.9 24.4 110 LITTLE SNAKE RIVER 8915 -M 15.5 * -M 35.0 * OLD BATTLE 10000 40.1 33.4 120 43.7 41.9 104 SAGE CREEK BASIN 7850 .1 .0 * 14.6 17.2 85 SANDSTONE RS 8150 -M .0 * 20.7 22.4 92 WHISKEY PARK 8950 30.5 23.2 131 45.9 33.7 136 ----- ----- Basin Index (%) 139* 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.0 5.2 192 17.2 16.8 102 BLIND BULL SUM 8650 38.2 21.0 182 26.1 23.1 113 EAST RIM DIVIDE 7930 .0 1.8 0 17.8 14.0 127 ELKHART PARK G.S. 9400 15.3 6.9 222 20.3 16.6 122 GROS VENTRE SUMMIT 8750 10.8 7.0 154 16.9 16.0 106 GUNSIGHT PASS 9820 18.5 11.4 162 22.1 17.6 126 KENDALL R.S. 7740 7.8 .0 * 24.9 16.7 149 LOOMIS PARK 8240 13.1 4.0 328 27.7 20.4 136 NEW FORK LAKE 8340 3.9 .0 * 15.0 13.4 112 POCKET CREEK 9360 10.6 -M * 15.2 -M * SNIDER BASIN 8060 .0 1.7 0 21.7 16.7 130 SPRING CREEK DIVIDE 9000 35.1 21.5 163 36.5 27.9 131 TRIPLE PEAK 8500 24.2 10.3 235 41.4 30.1 138 ----- ----- Basin Index (%) 195 125 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.7 -M * BUCK PASTURE 9700 5.6 -M * 21.2 -M * EF BLACKS FORK GS 9360 -M -M * 13.9 -M * HAMS FORK 7840 .0 .0 * 16.8 14.3 117 HEWINTA 9519 .0 .0 * 18.3 17.6 104 HICKERSON PARK 9145 .2 .0 * 12.1 13.3 91 HOLE-IN-ROCK 9150 .0 .0 * 13.3 12.9 103 INDIAN CREEK 9425 27.7 20.0 138 30.7 26.9 114 KELLEY R.S. 8180 8.7 4.3 202 23.6 21.6 109 SPIRIT LK 10235 4.3 -M * 18.7 -M * STEEL CREEK PARK 10200 20.1 15.5 130 21.1 20.9 101 ----- ----- Basin Index (%) 142* 107 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 11.5 7.4 155 24.4 23.3 105 BURTS MILLER RANCH 8000 .1 -M * 8.7 -M * CHALK CREEK #1 8993 14.7 17.2 85 27.5 30.7 90 HAYDEN FORK 9212 .1 .4 25* 25.1 25.6 98 KELLEY R.S. 8180 8.7 4.3 202 23.6 21.6 109 LILY LAKE 9156 2.5 .0 * 18.6 21.2 88 MONTE CRISTO 8960 17.3 16.7 104 30.0 31.4 96 SALT RIVER SUMMIT 7760 3.9 .0 * 22.3 19.8 113 ----- ----- Basin Index (%) 128* 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.