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 MONDAY: MAY 19 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 6.4 .0 * 30.3 24.4 124 BLACK BEAR 8170 44.1 34.3 129 48.4 44.6 109 BLIND BULL SUM 8650 39.3 20.5 192 26.1 23.1 113 COTTONWOOD CREEK 7670 20.1 7.3 275 39.6 29.9 132 EAST RIM DIVIDE 7930 .0 1.0 0* 17.7 14.1 126 GRAND TARGHEE 9260 50.2 42.8 117 44.8 36.8 122 GRANITE CREEK 6770 10.1 .0 * 27.6 22.9 121 GRASSY LAKE 7265 27.6 18.5 149 46.5 41.8 111 GROS VENTRE SUMMIT 8750 10.2 6.3 162 16.8 16.0 105 GUNSIGHT PASS 9820 17.9 10.9 164 22.1 17.6 126 LEWIS LAKE DIVIDE 7850 36.2 23.1 157 46.9 40.9 115 PHILLIPS BENCH 8200 30.3 19.9 152 39.6 32.8 121 SALT RIVER SUMMIT 7760 3.0 .0 * 22.3 19.9 112 SNAKE RIVER STATION 6920 .0 .0 * 30.4 26.4 115 SPRING CREEK DIVIDE 9000 34.2 21.0 163 36.5 28.0 130 THUMB DIVIDE 7980 10.3 2.0 515 23.6 22.7 104 TOGWOTEE PASS 9580 31.7 23.2 137 37.5 29.6 127 TWO OCEAN PLATEAU 9240 40.6 28.5 142 39.9 32.7 122 WILLOW CREEK 8380 29.3 17.5 167 47.3 40.7 116 YOUNTS PEAK 8350 -M 12.1 * -M 19.4 * ----- ----- Basin Index (%) 160 118 MADISON-GALLATIN BLACK BEAR 8170 44.1 34.3 129 48.4 44.6 109 CANYON 7870 8.3 2.8 296 20.3 19.8 103 MADISON PLATEAU 7750 21.6 14.8 146 30.8 31.5 98 WEST YELLOWSTONE 6700 .0 .0 * 19.6 17.5 112 WHISKEY CREEK 6800 11.2 6.3 178 26.1 24.2 108 ----- ----- Basin Index (%) 146 106 YELLOWSTONE BEARTOOTH LAKE 9360 32.8 21.9 150 34.8 24.1 144 BURNT MTN 5880 .0 .0 * 26.0 19.0 137 CANYON 7870 8.3 2.8 296 20.3 19.8 103 COLE CREEK 7850 25.9 16.5 157 22.7 19.4 117 EVENING STAR 9200 37.3 24.1 155 46.6 33.2 140 FISHER CREEK 9100 46.4 33.0 141 46.9 38.2 123 NORTHEAST ENTRANCE 7350 .0 .0 * 19.4 15.4 126 PARKER PEAK 9400 36.6 20.2 181 35.5 22.3 159 SYLVAN LAKE 8420 20.5 15.5 132 35.4 27.5 129 THUMB DIVIDE 7980 10.3 2.0 515 23.6 22.7 104 TWO OCEAN PLATEAU 9240 40.6 28.5 142 39.9 32.7 122 WHITE MILL 8700 35.3 22.8 155 35.0 28.8 122 WOLVERINE 7650 .9 .0 * 21.2 15.4 138 ----- ----- Basin Index (%) 157 128 WIND RIVER BURROUGHS CREEK 8750 -M 9.9 * -M 19.8 * CASTLE CREEK 8400 .0 -M * 14.8 -M * COLD SPRINGS 9630 .0 .0 * 15.7 14.3 110 DEER PARK 9700 15.3 11.1 138 24.2 25.9 93 HOBBS PARK 10100 15.0 13.6 110 18.4 19.2 96 KIRWIN 9550 17.6 8.8 200 22.1 15.8 140 LITTLE WARM 9370 8.6 3.4 253 20.2 17.3 117 OWL CREEK 8975 .0 .0 * 9.5 9.5 100 SOUTH PASS 9040 11.2 7.7 145 19.2 22.4 86 ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.4 95 TOGWOTEE PASS 9580 31.7 23.2 137 37.5 29.6 127 TOWNSEND CREEK 8700 .6 .0 * 14.6 17.0 86 ----- ----- Basin Index (%) 147 105 BIGHORN BASIN BALD MTN. 9380 31.4 19.6 160 25.4 22.0 115 BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.5 114 BONE SPRINGS DIV 9350 24.6 14.6 168 22.3 20.7 108 GRAVE SPRINGS 8550 8.4 3.5 240 15.5 14.9 104 KIRWIN 9550 17.6 8.8 200 22.1 15.8 140 MARQUETTE 8760 13.6 -M * 18.0 -M * MIDDLE POWDER 7760 13.0 6.2 210 17.5 16.2 108 OWL CREEK 8975 .0 .0 * 9.5 9.5 100 POWDER RIVER PASS 9480 12.7 6.0 212 20.2 17.2 117 SHELL CREEK 9580 21.5 15.6 138 21.4 18.4 116 TIMBER CREEK 7950 .0 .0 * 13.5 12.1 112 ----- ----- Basin Index (%) 174 114 SHOSHONE RIVER BLACKWATER 9780 34.9 24.5 142 34.8 25.8 135 EVENING STAR 9200 37.3 24.1 155 46.6 33.2 140 MARQUETTE 8760 13.6 -M * 18.0 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.2 127 YOUNTS PEAK 8350 -M 12.1 * -M 19.4 * ----- ----- Basin Index (%) 149* 135 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.5 114 CLOUD PEAK RESERVOIR 9860 24.6 15.2 162 26.1 19.5 134 GRAVE SPRINGS 8550 8.4 3.5 240 15.5 14.9 104 HANSEN SAWMILL 8360 2.5 .0 * 16.2 12.8 127 MIDDLE POWDER 7760 13.0 6.2 210 17.5 16.2 108 POWDER RIVER PASS 9480 12.7 6.0 212 20.2 17.2 117 SOLDIER PARK 8720 8.1 -M * 16.5 -M * ----- ----- Basin Index (%) 198 118 TONGUE RIVER BIG GOOSE 7990 10.9 5.7 191 20.1 17.1 118 BONE SPRINGS DIV 9350 24.6 14.6 168 22.3 20.7 108 BURGESS JUNCTION 7880 15.7 8.7 180 21.2 16.9 125 DOME LAKE 8880 16.4 7.0 234 21.0 19.0 111 LITTLE GOOSE 8870 13.6 -M * 23.2 -M * SUCKER CREEK 8880 17.2 9.2 187 25.6 20.1 127 TIE CREEK 6870 2.1 .0 * 19.9 17.2 116 ----- ----- Basin Index (%) 192 117 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.9 14.8 121 ----- ----- Basin Index (%) * 121 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.8 16.6 125 NORTH RAPID CREEK 6130 .0 .0 * 20.1 14.4 140 ----- ----- Basin Index (%) * 132 UPPER N. PLATTE ARAPAHO RIDGE 10960 30.9 19.0 163 34.6 28.4 122 BLACKHALL MTN 9820 38.5 -M * -M -M * COLUMBINE 9160 22.6 4.0 565 -M 30.5 * DIVIDE PEAK 8880 9.6 6.7 143 29.8 26.4 113 JOE WRIGHT 10120 32.8 21.6 152 41.2 32.7 126 LAPRELE CREEK 8375 .9 .0 * 17.0 16.8 101 MED BOW 10500 -M -M * 48.4 -M * NORTH FRENCH CREEK 10130 39.5 30.2 131 42.3 33.6 126 NEVER SUMMER 10280 28.8 20.8 138 25.9 -M * OLD BATTLE 10000 39.6 32.9 120 43.8 42.0 104 RAWAH 9020 6.1 .6 1017* 23.2 18.9 123 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.3 84 SAND LAKE 10050 40.1 28.3 142 41.9 31.8 132 SOUTH BRUSH CREEK 8440 .1 .4 25* 19.7 20.0 98 TOWER 10500 55.7 48.2 116 60.4 47.7 127 WEBBER SPRINGS 9250 19.4 13.0 149 35.9 32.0 112 WILLOW CREEK PASS 9540 14.4 9.8 147 19.3 17.3 112 ZIRKEL 9340 31.4 11.4 275 -M 33.3 * ----- ----- Basin Index (%) 151 116 SWEETWATER DEER PARK 9700 15.3 11.1 138 24.2 25.9 93 LARSEN CREEK 9000 .0 3.9 0 17.9 -M * SOUTH PASS 9040 11.2 7.7 145 19.2 22.4 86 ----- ----- Basin Index (%) 117 90 LOWER N. PLATTE CASPER MTN. 7900 13.3 5.4 246 21.1 20.3 104 LAPRELE CREEK 8375 .9 .0 * 17.0 16.8 101 RENO HILL 8400 18.1 4.6 393 28.2 21.3 132 WINDY PEAK 7900 .5 .0 * 16.8 14.7 114 ----- ----- Basin Index (%) 328 114 LARAMIE RIVER BROOKLYN LAKE 10240 29.6 17.2 172 38.0 27.1 140 CINNABAR PARK 9574 21.0 13.1 160 36.7 29.5 124 CROW CREEK 8330 .7 .0 * 17.7 15.1 117 DEADMAN HILL 10220 27.9 17.1 163 30.4 22.9 133 RAWAH 9020 6.1 .6 1017* 23.2 18.9 123 ROACH 9700 18.6 12.1 154 30.9 24.5 126 ----- ----- Basin Index (%) 173 128 S. PLATTE BLACK MOUNTAIN 8920 3.9 -M * 19.0 -M * CROW CREEK 8330 .7 .0 * 17.7 15.1 117 DEADMAN HILL 10220 27.9 17.1 163 30.4 22.9 133 ----- ----- Basin Index (%) 167* 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.2 18.6 109 DIVIDE PEAK 8880 9.6 6.7 143 29.8 26.4 113 ELK RIVER 8700 6.4 .0 * 27.0 24.5 110 LITTLE SNAKE RIVER 8915 -M 14.4 * -M 35.0 * OLD BATTLE 10000 39.6 32.9 120 43.8 42.0 104 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.3 84 SANDSTONE RS 8150 -M .0 * 20.8 22.4 93 WHISKEY PARK 8950 29.3 22.6 130 45.8 33.8 136 ----- ----- Basin Index (%) 136* 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.6 4.2 229 17.3 16.8 103 BLIND BULL SUM 8650 39.3 20.5 192 26.1 23.1 113 EAST RIM DIVIDE 7930 .0 1.0 0* 17.7 14.1 126 ELKHART PARK G.S. 9400 14.6 6.2 235 20.3 16.7 122 GROS VENTRE SUMMIT 8750 10.2 6.3 162 16.8 16.0 105 GUNSIGHT PASS 9820 17.9 10.9 164 22.1 17.6 126 KENDALL R.S. 7740 7.0 .0 * 24.9 16.7 149 LOOMIS PARK 8240 12.6 3.3 382 27.7 20.5 135 NEW FORK LAKE 8340 3.3 .0 * 15.0 13.5 111 POCKET CREEK 9360 10.0 -M * 15.3 -M * SNIDER BASIN 8060 .0 .8 0* 21.7 16.8 129 SPRING CREEK DIVIDE 9000 34.2 21.0 163 36.5 28.0 130 TRIPLE PEAK 8500 23.1 9.5 243 41.4 30.1 138 ----- ----- Basin Index (%) 205 125 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.8 -M * BUCK PASTURE 9700 4.3 -M * 21.3 -M * EF BLACKS FORK GS 9360 .0 -M * 13.8 -M * HAMS FORK 7840 .0 .0 * 16.8 14.3 117 HEWINTA 9519 .0 .0 * 18.4 17.7 104 HICKERSON PARK 9145 .0 .0 * 12.1 13.4 90 HOLE-IN-ROCK 9150 .0 .0 * 13.3 13.0 102 INDIAN CREEK 9425 26.8 19.3 139 30.7 27.0 114 KELLEY R.S. 8180 8.1 3.5 231 23.6 21.7 109 SPIRIT LK 10235 3.3 -M * 18.7 -M * STEEL CREEK PARK 10200 19.3 15.2 127 21.1 21.0 100 ----- ----- Basin Index (%) 143* 106 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 10.6 6.1 174 24.4 23.4 104 BURTS MILLER RANCH 8000 .0 -M * 8.7 -M * CHALK CREEK #1 8993 13.7 16.4 84 27.6 30.8 90 HAYDEN FORK 9212 .0 .0 * 25.2 25.7 98 KELLEY R.S. 8180 8.1 3.5 231 23.6 21.7 109 LILY LAKE 9156 1.0 .0 * 18.7 21.3 88 MONTE CRISTO 8960 16.3 15.8 103 30.0 31.5 95 SALT RIVER SUMMIT 7760 3.0 .0 * 22.3 19.9 112 ----- ----- Basin Index (%) 126* 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.