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 FRIDAY: MAY 23 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 2.0 .0 * 30.3 24.8 122 BLACK BEAR 8170 40.7 32.3 126 48.6 45.0 108 BLIND BULL SUM 8650 38.5 18.3 210 26.1 23.6 111 COTTONWOOD CREEK 7670 16.8 3.4 494 39.6 30.4 130 EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.4 124 GRAND TARGHEE 9260 48.4 41.4 117 44.9 37.4 120 GRANITE CREEK 6770 6.0 .0 * 27.6 23.2 119 GRASSY LAKE 7265 21.7 14.3 152 46.5 42.3 110 GROS VENTRE SUMMIT 8750 6.3 3.5 180 16.8 16.4 102 GUNSIGHT PASS 9820 15.6 8.7 179 22.4 18.0 124 LEWIS LAKE DIVIDE 7850 29.1 20.2 144 46.8 41.4 113 PHILLIPS BENCH 8200 26.8 16.7 160 39.7 33.3 119 SALT RIVER SUMMIT 7760 .0 .0 * 22.2 20.2 110 SNAKE RIVER STATION 6920 .0 .0 * 30.3 26.8 113 SPRING CREEK DIVIDE 9000 30.8 18.3 168 36.6 28.4 129 THUMB DIVIDE 7980 4.8 .3 1600* 23.7 23.1 103 TOGWOTEE PASS 9580 29.5 22.7 130 37.6 30.1 125 TWO OCEAN PLATEAU 9240 39.4 27.9 141 39.9 33.3 120 WILLOW CREEK 8380 23.2 13.6 171 47.3 41.3 115 YOUNTS PEAK 8350 -M 10.7 * -M 19.9 * ----- ----- Basin Index (%) 157 116 MADISON-GALLATIN BLACK BEAR 8170 40.7 32.3 126 48.6 45.0 108 CANYON 7870 4.4 .6 733* 20.3 20.2 100 MADISON PLATEAU 7750 17.8 12.9 138 30.8 32.0 96 WEST YELLOWSTONE 6700 .0 .0 * 19.6 17.8 110 WHISKEY CREEK 6800 7.7 3.7 208 26.0 24.6 106 ----- ----- Basin Index (%) 143 104 YELLOWSTONE BEARTOOTH LAKE 9360 31.4 20.8 151 34.9 24.4 143 BURNT MTN 5880 .0 .0 * 26.2 19.7 133 CANYON 7870 4.4 .6 733* 20.3 20.2 100 COLE CREEK 7850 25.1 14.7 171 22.6 19.9 114 EVENING STAR 9200 36.7 22.6 162 46.8 33.7 139 FISHER CREEK 9100 43.5 31.9 136 47.3 38.8 122 NORTHEAST ENTRANCE 7350 .0 .0 * 19.5 15.9 123 PARKER PEAK 9400 33.1 19.2 172 35.7 22.8 157 SYLVAN LAKE 8420 16.2 13.7 118 35.4 28.1 126 THUMB DIVIDE 7980 4.8 .3 1600* 23.7 23.1 103 TWO OCEAN PLATEAU 9240 39.4 27.9 141 39.9 33.3 120 WHITE MILL 8700 32.9 21.4 154 35.1 29.3 120 WOLVERINE 7650 .0 .0 * 21.2 15.8 134 ----- ----- Basin Index (%) 155 126 WIND RIVER BURROUGHS CREEK 8750 -M 7.4 * -M 20.2 * CASTLE CREEK 8400 .0 -M * 15.0 -M * COLD SPRINGS 9630 .0 .0 * 15.8 14.6 108 DEER PARK 9700 12.5 9.1 137 24.3 26.3 92 HOBBS PARK 10100 13.4 11.8 114 18.5 19.6 94 KIRWIN 9550 15.1 7.0 216 22.6 16.2 140 LITTLE WARM 9370 5.7 1.0 570* 20.2 17.7 114 OWL CREEK 8975 .0 .0 * 9.8 9.9 99 SOUTH PASS 9040 7.6 4.1 185 19.2 22.7 85 ST. LAWRENCE ALT 8620 .0 .0 * 12.8 13.7 93 TOGWOTEE PASS 9580 29.5 22.7 130 37.6 30.1 125 TOWNSEND CREEK 8700 .0 .0 * 14.9 17.4 86 ----- ----- Basin Index (%) 150* 104 BIGHORN BASIN BALD MTN. 9380 29.8 18.0 166 25.6 22.4 114 BEAR TRAP MEADOW 8200 .0 .0 * 14.5 12.9 112 BONE SPRINGS DIV 9350 22.4 13.4 167 22.5 21.3 106 GRAVE SPRINGS 8550 5.3 .3 1767* 15.8 15.2 104 KIRWIN 9550 15.1 7.0 216 22.6 16.2 140 MARQUETTE 8760 10.6 -M * 18.2 -M * MIDDLE POWDER 7760 9.1 2.6 350 17.6 16.5 107 OWL CREEK 8975 .0 .0 * 9.8 9.9 99 POWDER RIVER PASS 9480 10.2 3.2 319 20.5 17.7 116 SHELL CREEK 9580 20.5 14.4 142 21.6 18.9 114 TIMBER CREEK 7950 .0 .0 * 14.2 12.5 114 ----- ----- Basin Index (%) 191 113 SHOSHONE RIVER BLACKWATER 9780 30.5 23.6 129 34.9 26.3 133 EVENING STAR 9200 36.7 22.6 162 46.8 33.7 139 MARQUETTE 8760 10.6 -M * 18.2 -M * SYLVAN ROAD 7120 .0 .0 * 25.7 20.6 125 YOUNTS PEAK 8350 -M 10.7 * -M 19.9 * ----- ----- Basin Index (%) 145* 133 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .0 * 14.5 12.9 112 CLOUD PEAK RESERVOIR 9860 23.2 13.2 176 26.6 20.0 133 GRAVE SPRINGS 8550 5.3 .3 1767* 15.8 15.2 104 HANSEN SAWMILL 8360 .0 .0 * 17.1 13.3 129 MIDDLE POWDER 7760 9.1 2.6 350 17.6 16.5 107 POWDER RIVER PASS 9480 10.2 3.2 319 20.5 17.7 116 SOLDIER PARK 8720 5.6 -M * 17.3 -M * ----- ----- Basin Index (%) 248* 117 TONGUE RIVER BIG GOOSE 7990 8.6 2.1 410 20.3 17.5 116 BONE SPRINGS DIV 9350 22.4 13.4 167 22.5 21.3 106 BURGESS JUNCTION 7880 12.7 6.2 205 21.2 17.3 123 DOME LAKE 8880 14.6 4.0 365 21.5 19.4 111 LITTLE GOOSE 8870 11.0 -M * 23.5 -M * SUCKER CREEK 8880 14.2 7.0 203 25.6 20.6 124 TIE CREEK 6870 .0 .0 * 19.8 17.6 112 ----- ----- Basin Index (%) 222 115 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 18.1 15.1 120 ----- ----- Basin Index (%) * 120 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 20.9 17.2 122 NORTH RAPID CREEK 6130 .0 .0 * 20.2 14.9 136 ----- ----- Basin Index (%) * 128 UPPER N. PLATTE ARAPAHO RIDGE 10960 28.4 15.5 183 34.5 28.7 120 BLACKHALL MTN 9820 35.2 -M * 43.9 -M * COLUMBINE 9160 19.6 .1 19600* 41.7 30.8 135 DIVIDE PEAK 8880 3.7 3.0 123 29.7 26.7 111 JOE WRIGHT 10120 31.0 19.7 157 41.2 33.2 124 LAPRELE CREEK 8375 .2 .0 * 17.6 17.1 103 MED BOW 10500 -M -M * 48.5 -M * NORTH FRENCH CREEK 10130 36.9 27.5 134 42.6 34.1 125 NEVER SUMMER 10280 25.8 18.8 137 27.1 -M * OLD BATTLE 10000 37.4 31.3 119 43.7 42.4 103 RAWAH 9020 2.2 .1 2200* 23.1 19.1 121 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.5 83 SAND LAKE 10050 38.8 26.4 147 42.0 32.2 130 SOUTH BRUSH CREEK 8440 .0 .0 * 19.8 20.4 97 TOWER 10500 52.6 46.4 113 60.4 48.2 125 WEBBER SPRINGS 9250 16.0 8.8 182 35.8 32.3 111 WILLOW CREEK PASS 9540 10.7 7.5 143 19.3 17.6 110 ZIRKEL 9340 25.4 5.0 508 -M 33.5 * ----- ----- Basin Index (%) 156 116 SWEETWATER DEER PARK 9700 12.5 9.1 137 24.3 26.3 92 LARSEN CREEK 9000 .0 2.7 0 17.9 -M * SOUTH PASS 9040 7.6 4.1 185 19.2 22.7 85 ----- ----- Basin Index (%) 126 89 LOWER N. PLATTE CASPER MTN. 7900 8.5 2.2 386 21.2 20.6 103 LAPRELE CREEK 8375 .2 .0 * 17.6 17.1 103 RENO HILL 8400 14.7 .8 1838* 28.5 21.6 132 WINDY PEAK 7900 .2 .0 * 17.1 15.1 113 ----- ----- Basin Index (%) 787* 113 LARAMIE RIVER BROOKLYN LAKE 10240 25.9 13.8 188 38.0 27.5 138 CINNABAR PARK 9574 21.1 9.5 222 36.7 29.8 123 CROW CREEK 8330 .2 .0 * 17.7 15.5 114 DEADMAN HILL 10220 24.3 14.6 166 30.5 23.3 131 RAWAH 9020 2.2 .1 2200* 23.1 19.1 121 ROACH 9700 15.3 9.2 166 30.9 24.9 124 ----- ----- Basin Index (%) 189 126 S. PLATTE BLACK MOUNTAIN 8920 .3 -M * 19.5 -M * CROW CREEK 8330 .2 .0 * 17.7 15.5 114 DEADMAN HILL 10220 24.3 14.6 166 30.5 23.3 131 ----- ----- Basin Index (%) 168* 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.7 107 DIVIDE PEAK 8880 3.7 3.0 123 29.7 26.7 111 ELK RIVER 8700 .9 .0 * 26.9 24.8 108 LITTLE SNAKE RIVER 8915 -M 9.9 * -M 35.4 * OLD BATTLE 10000 37.4 31.3 119 43.7 42.4 103 SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.5 83 SANDSTONE RS 8150 .0 .0 * 21.0 22.7 93 WHISKEY PARK 8950 29.0 18.8 154 46.3 34.0 136 ----- ----- Basin Index (%) 134* 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.6 .4 1650* 17.3 17.1 101 BLIND BULL SUM 8650 38.5 18.3 210 26.1 23.6 111 EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.4 124 ELKHART PARK G.S. 9400 11.4 4.2 271 20.4 17.1 119 GROS VENTRE SUMMIT 8750 6.3 3.5 180 16.8 16.4 102 GUNSIGHT PASS 9820 15.6 8.7 179 22.4 18.0 124 KENDALL R.S. 7740 2.8 .0 * 25.0 17.0 147 LOOMIS PARK 8240 9.5 .5 1900* 27.7 20.8 133 NEW FORK LAKE 8340 .0 .0 * 15.3 13.8 111 POCKET CREEK 9360 7.0 -M * 15.3 -M * SNIDER BASIN 8060 .0 .0 * 21.8 17.0 128 SPRING CREEK DIVIDE 9000 30.8 18.3 168 36.6 28.4 129 TRIPLE PEAK 8500 18.6 5.5 338 41.4 30.6 135 ----- ----- Basin Index (%) 236* 123 LOWER GREEN RIVER BLACKS FORK JCT 8870 .0 -M * 16.7 -M * BUCK PASTURE 9700 .0 -M * 21.2 -M * EF BLACKS FORK GS 9360 -M -M * 14.1 -M * HAMS FORK 7840 .0 .0 * 16.9 14.7 115 HEWINTA 9519 .0 .0 * 18.3 17.9 102 HICKERSON PARK 9145 .0 .0 * 12.1 13.7 88 HOLE-IN-ROCK 9150 .0 .0 * 13.3 13.3 100 INDIAN CREEK 9425 23.0 16.3 141 30.7 27.3 112 KELLEY R.S. 8180 3.6 .7 514* 23.7 22.1 107 SPIRIT LK 10235 .2 -M * 18.8 -M * STEEL CREEK PARK 10200 16.4 13.3 123 21.0 21.3 99 ----- ----- Basin Index (%) 142* 104 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 15.3 -M * BUG LAKE 7950 6.4 1.2 533* 24.4 23.8 103 BURTS MILLER RANCH 8000 .1 -M * 8.7 -M * CHALK CREEK #1 8993 9.3 12.8 73 27.5 31.1 88 HAYDEN FORK 9212 .0 .0 * 25.1 26.1 96 KELLEY R.S. 8180 3.6 .7 514* 23.7 22.1 107 LILY LAKE 9156 .0 .0 * 18.6 21.6 86 MONTE CRISTO 8960 12.8 11.9 108 30.0 32.0 94 SALT RIVER SUMMIT 7760 .0 .0 * 22.2 20.2 110 ----- ----- Basin Index (%) 121* 97 ----------------------------------------------------------------------------- -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.