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 TUESDAY: MAY 20 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 5.5 .0 * 30.3 24.5 124 BLACK BEAR 8170 43.5 33.8 129 48.5 44.6 109 BLIND BULL SUM 8650 38.9 19.9 195 26.1 23.2 112 COTTONWOOD CREEK 7670 19.2 6.3 305 39.6 30.0 132 EAST RIM DIVIDE 7930 .0 .5 0* 17.8 14.1 126 GRAND TARGHEE 9260 49.6 42.3 117 44.8 36.8 122 GRANITE CREEK 6770 9.4 .0 * 27.6 22.9 121 GRASSY LAKE 7265 26.6 17.4 153 46.4 41.8 111 GROS VENTRE SUMMIT 8750 9.5 5.6 170 16.8 16.1 104 GUNSIGHT PASS 9820 17.4 10.4 167 22.1 17.7 125 LEWIS LAKE DIVIDE 7850 34.8 22.4 155 46.8 41.0 114 PHILLIPS BENCH 8200 29.6 19.2 154 39.7 32.8 121 SALT RIVER SUMMIT 7760 2.1 .0 * 22.2 19.9 112 SNAKE RIVER STATION 6920 .0 .0 * 30.4 26.5 115 SPRING CREEK DIVIDE 9000 -M 20.3 * -M 28.0 * THUMB DIVIDE 7980 9.4 1.4 671* 23.6 22.8 104 TOGWOTEE PASS 9580 31.6 23.0 137 37.5 29.7 126 TWO OCEAN PLATEAU 9240 40.1 28.3 142 39.9 32.8 122 WILLOW CREEK 8380 28.1 16.6 169 47.4 40.8 116 YOUNTS PEAK 8350 -M 11.8 * -M 19.5 * ----- ----- Basin Index (%) 160 117 MADISON-GALLATIN BLACK BEAR 8170 43.5 33.8 129 48.5 44.6 109 CANYON 7870 8.0 2.2 364 20.3 19.9 102 MADISON PLATEAU 7750 21.0 14.3 147 30.8 31.5 98 WEST YELLOWSTONE 6700 .0 .0 * 19.7 17.5 113 WHISKEY CREEK 6800 10.5 5.6 188 26.1 24.3 107 ----- ----- Basin Index (%) 148 106 YELLOWSTONE BEARTOOTH LAKE 9360 32.8 21.6 152 34.9 24.1 145 BURNT MTN 5880 .0 .0 * 26.0 19.1 136 CANYON 7870 8.0 2.2 364 20.3 19.9 102 COLE CREEK 7850 26.1 16.2 161 22.6 19.5 116 EVENING STAR 9200 37.9 23.7 160 46.6 33.3 140 FISHER CREEK 9100 46.7 32.8 142 47.2 38.3 123 NORTHEAST ENTRANCE 7350 .0 .0 * 19.4 15.5 125 PARKER PEAK 9400 36.2 19.8 183 35.5 22.4 158 SYLVAN LAKE 8420 19.8 15.1 131 35.4 27.6 128 THUMB DIVIDE 7980 9.4 1.4 671* 23.6 22.8 104 TWO OCEAN PLATEAU 9240 40.1 28.3 142 39.9 32.8 122 WHITE MILL 8700 35.0 22.3 157 35.0 28.9 121 WOLVERINE 7650 .5 .0 * 21.2 15.5 137 ----- ----- Basin Index (%) 159 127 WIND RIVER BURROUGHS CREEK 8750 -M 9.3 * -M 19.9 * CASTLE CREEK 8400 .0 -M * 14.8 -M * COLD SPRINGS 9630 .0 .0 * 15.7 14.4 109 DEER PARK 9700 14.8 10.5 141 24.3 25.9 94 HOBBS PARK 10100 14.7 13.1 112 18.4 19.4 95 KIRWIN 9550 17.1 8.4 204 22.1 15.9 139 LITTLE WARM 9370 7.8 2.7 289 20.2 17.4 116 OWL CREEK 8975 .0 .0 * 9.5 9.6 99 SOUTH PASS 9040 10.3 6.8 151 19.2 22.4 86 ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.5 94 TOGWOTEE PASS 9580 31.6 23.0 137 37.5 29.7 126 TOWNSEND CREEK 8700 .0 .0 * 14.6 17.1 85 ----- ----- Basin Index (%) 149 105 BIGHORN BASIN BALD MTN. 9380 31.5 19.2 164 25.4 22.1 115 BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.6 113 BONE SPRINGS DIV 9350 24.5 14.3 171 22.3 20.8 107 GRAVE SPRINGS 8550 7.9 2.6 304 15.5 15.0 103 KIRWIN 9550 17.1 8.4 204 22.1 15.9 139 MARQUETTE 8760 12.9 -M * 17.8 -M * MIDDLE POWDER 7760 12.1 5.3 228 17.5 16.2 108 OWL CREEK 8975 .0 .0 * 9.5 9.6 99 POWDER RIVER PASS 9480 12.0 5.4 222 20.2 17.3 117 SHELL CREEK 9580 21.5 15.3 141 21.5 18.5 116 TIMBER CREEK 7950 .0 .0 * 13.5 12.2 111 ----- ----- Basin Index (%) 180 113 SHOSHONE RIVER BLACKWATER 9780 34.3 24.3 141 34.8 26.0 134 EVENING STAR 9200 37.9 23.7 160 46.6 33.3 140 MARQUETTE 8760 12.9 -M * 17.8 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.3 127 YOUNTS PEAK 8350 -M 11.8 * -M 19.5 * ----- ----- Basin Index (%) 150* 135 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.6 113 CLOUD PEAK RESERVOIR 9860 24.6 14.8 166 26.0 19.6 133 GRAVE SPRINGS 8550 7.9 2.6 304 15.5 15.0 103 HANSEN SAWMILL 8360 1.4 .0 * 16.2 12.9 126 MIDDLE POWDER 7760 12.1 5.3 228 17.5 16.2 108 POWDER RIVER PASS 9480 12.0 5.4 222 20.2 17.3 117 SOLDIER PARK 8720 7.7 -M * 16.5 -M * ----- ----- Basin Index (%) 206 117 TONGUE RIVER BIG GOOSE 7990 10.5 4.8 219 20.1 17.2 117 BONE SPRINGS DIV 9350 24.5 14.3 171 22.3 20.8 107 BURGESS JUNCTION 7880 15.2 8.1 188 21.2 17.0 125 DOME LAKE 8880 16.0 6.2 258 21.0 19.0 111 LITTLE GOOSE 8870 13.2 -M * 23.2 -M * SUCKER CREEK 8880 16.7 8.6 194 25.5 20.2 126 TIE CREEK 6870 1.3 .0 * 19.9 17.2 116 ----- ----- Basin Index (%) 200 117 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 17.9 14.9 120 ----- ----- Basin Index (%) * 120 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.8 16.6 125 NORTH RAPID CREEK 6130 .0 .0 * 20.1 14.5 139 ----- ----- Basin Index (%) * 132 UPPER N. PLATTE ARAPAHO RIDGE 10960 30.3 18.1 167 34.5 28.5 121 BLACKHALL MTN 9820 37.8 -M * 43.5 -M * COLUMBINE 9160 20.5 3.0 683 41.6 30.6 136 DIVIDE PEAK 8880 8.2 5.7 144 29.7 26.5 112 JOE WRIGHT 10120 32.6 21.1 155 41.1 32.8 125 LAPRELE CREEK 8375 .2 .0 * 17.0 16.9 101 MED BOW 10500 -M -M * 48.4 -M * NORTH FRENCH CREEK 10130 38.8 29.6 131 42.3 33.7 126 NEVER SUMMER 10280 27.7 20.3 136 25.8 -M * OLD BATTLE 10000 39.1 32.5 120 43.7 42.1 104 RAWAH 9020 5.2 .4 1300* 23.1 18.9 122 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84 SAND LAKE 10050 39.8 27.8 143 41.9 31.9 131 SOUTH BRUSH CREEK 8440 .0 .0 * 19.7 20.1 98 TOWER 10500 55.0 47.7 115 60.4 47.9 126 WEBBER SPRINGS 9250 18.4 12.0 153 35.8 32.1 112 WILLOW CREEK PASS 9540 13.5 9.3 145 19.3 17.3 112 ZIRKEL 9340 29.8 9.7 307 -M 33.4 * ----- ----- Basin Index (%) 151 117 SWEETWATER DEER PARK 9700 14.8 10.5 141 24.3 25.9 94 LARSEN CREEK 9000 .0 3.6 0 17.9 -M * SOUTH PASS 9040 10.3 6.8 151 19.2 22.4 86 ----- ----- Basin Index (%) 120 90 LOWER N. PLATTE CASPER MTN. 7900 12.0 4.5 267 21.1 20.4 103 LAPRELE CREEK 8375 .2 .0 * 17.0 16.9 101 RENO HILL 8400 17.2 3.6 478 28.2 21.4 132 WINDY PEAK 7900 .2 .0 * 16.8 14.9 113 ----- ----- Basin Index (%) 365 113 LARAMIE RIVER BROOKLYN LAKE 10240 28.8 16.4 176 37.9 27.2 139 CINNABAR PARK 9574 21.1 12.3 172 36.7 29.5 124 CROW CREEK 8330 .8 .0 * 17.7 15.1 117 DEADMAN HILL 10220 27.2 16.5 165 30.4 23.0 132 RAWAH 9020 5.2 .4 1300* 23.1 18.9 122 ROACH 9700 17.6 11.5 153 30.9 24.7 125 ----- ----- Basin Index (%) 176 128 S. PLATTE BLACK MOUNTAIN 8920 2.4 -M * 19.1 -M * CROW CREEK 8330 .8 .0 * 17.7 15.1 117 DEADMAN HILL 10220 27.2 16.5 165 30.4 23.0 132 ----- ----- Basin Index (%) 170* 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.6 108 DIVIDE PEAK 8880 8.2 5.7 144 29.7 26.5 112 ELK RIVER 8700 4.9 .0 * 26.9 24.6 109 LITTLE SNAKE RIVER 8915 -M 13.3 * -M 35.2 * OLD BATTLE 10000 39.1 32.5 120 43.7 42.1 104 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84 SANDSTONE RS 8150 -M .0 * 20.9 22.5 93 WHISKEY PARK 8950 29.9 21.9 137 45.8 33.8 136 ----- ----- Basin Index (%) 137* 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.1 3.1 294 17.3 16.8 103 BLIND BULL SUM 8650 38.9 19.9 195 26.1 23.2 112 EAST RIM DIVIDE 7930 .0 .5 0* 17.8 14.1 126 ELKHART PARK G.S. 9400 13.9 5.7 244 20.3 16.7 122 GROS VENTRE SUMMIT 8750 9.5 5.6 170 16.8 16.1 104 GUNSIGHT PASS 9820 17.4 10.4 167 22.1 17.7 125 KENDALL R.S. 7740 6.1 .0 * 24.9 16.8 148 LOOMIS PARK 8240 12.1 2.6 465 27.7 20.5 135 NEW FORK LAKE 8340 2.5 .0 * 15.0 13.5 111 POCKET CREEK 9360 9.4 -M * 15.2 -M * SNIDER BASIN 8060 .0 .4 0* 21.7 16.8 129 SPRING CREEK DIVIDE 9000 -M 20.3 * -M 28.0 * TRIPLE PEAK 8500 22.2 8.4 264 41.3 30.2 137 ----- ----- Basin Index (%) 233 124 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.7 -M * BUCK PASTURE 9700 3.3 -M * 21.2 -M * EF BLACKS FORK GS 9360 -M -M * 13.7 -M * HAMS FORK 7840 .0 .0 * 16.8 14.4 117 HEWINTA 9519 .0 .0 * 18.4 17.7 104 HICKERSON PARK 9145 .1 .0 * 12.1 13.4 90 HOLE-IN-ROCK 9150 .0 .0 * 13.3 13.0 102 INDIAN CREEK 9425 26.0 18.5 141 30.7 27.0 114 KELLEY R.S. 8180 7.1 2.8 254 23.6 21.8 108 SPIRIT LK 10235 2.9 -M * 18.8 -M * STEEL CREEK PARK 10200 18.8 14.7 128 21.1 21.0 100 ----- ----- Basin Index (%) 144* 106 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 9.7 4.9 198 24.4 23.5 104 BURTS MILLER RANCH 8000 .1 -M * 8.7 -M * CHALK CREEK #1 8993 12.6 15.6 81 27.6 30.8 90 HAYDEN FORK 9212 .1 .0 * 25.1 25.8 97 KELLEY R.S. 8180 7.1 2.8 254 23.6 21.8 108 LILY LAKE 9156 .2 .0 * 18.7 21.3 88 MONTE CRISTO 8960 15.6 14.9 105 30.0 31.6 95 SALT RIVER SUMMIT 7760 2.1 .0 * 22.2 19.9 112 ----- ----- Basin Index (%) 124* 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.