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 WEDNESDAY: APRIL 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 18.3 11.3 162 27.3 22.0 124 BLACK BEAR 8170 44.1 36.8 120 42.4 40.3 105 BLIND BULL SUM 8650 36.9 24.3 152 23.8 20.5 116 COTTONWOOD CREEK 7670 25.7 17.8 144 35.5 26.2 135 EAST RIM DIVIDE 7930 12.4 9.3 133 16.0 12.3 130 GRAND TARGHEE 9260 53.1 42.7 124 -M 33.0 * GRANITE CREEK 6770 20.1 10.0 201 24.7 20.5 120 GRASSY LAKE 7265 38.8 30.6 127 41.9 37.8 111 GROS VENTRE SUMMIT 8750 14.6 12.9 113 15.1 13.9 109 GUNSIGHT PASS 9820 19.7 13.6 145 19.5 15.2 128 LEWIS LAKE DIVIDE 7850 40.5 30.7 132 42.1 37.2 113 PHILLIPS BENCH 8200 33.8 25.3 134 35.4 29.5 120 SALT RIVER SUMMIT 7760 -M 8.9 * 19.4 17.6 110 SNAKE RIVER STATION 6920 14.9 10.9 137 27.2 23.8 114 SPRING CREEK DIVIDE 9000 37.7 23.6 160 33.7 25.2 134 THUMB DIVIDE 7980 19.8 14.3 138 20.6 20.0 103 TOGWOTEE PASS 9580 32.3 24.3 133 34.4 26.0 132 TWO OCEAN PLATEAU 9240 37.7 28.7 131 35.8 28.9 124 WILLOW CREEK 8380 39.9 26.4 151 43.1 35.8 120 YOUNTS PEAK 8350 -M 15.1 * -M 16.9 * ----- ----- Basin Index (%) 137 119 MADISON-GALLATIN BLACK BEAR 8170 44.1 36.8 120 42.4 40.3 105 CANYON 7870 14.5 12.0 121 17.9 17.2 104 MADISON PLATEAU 7750 24.8 22.8 109 26.6 27.8 96 WEST YELLOWSTONE 6700 7.1 6.0 118 17.2 15.3 112 WHISKEY CREEK 6800 16.9 15.4 110 22.3 21.5 104 ----- ----- Basin Index (%) 115 104 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 23.6 141 31.5 21.0 150 BURNT MTN 5880 7.3 .0 * 21.3 14.5 147 CANYON 7870 14.5 12.0 121 17.9 17.2 104 COLE CREEK 7850 24.6 16.4 150 18.3 14.9 123 EVENING STAR 9200 40.7 24.4 167 42.8 29.1 147 FISHER CREEK 9100 46.1 33.0 140 41.7 33.8 123 NORTHEAST ENTRANCE 7350 12.2 5.7 214 16.8 13.1 128 PARKER PEAK 9400 34.9 21.4 163 31.4 19.1 164 SYLVAN LAKE 8420 23.3 20.3 115 31.1 24.0 130 THUMB DIVIDE 7980 19.8 14.3 138 20.6 20.0 103 TWO OCEAN PLATEAU 9240 37.7 28.7 131 35.8 28.9 124 WHITE MILL 8700 33.4 23.7 141 30.6 25.2 121 WOLVERINE 7650 15.2 6.2 245 18.5 13.1 141 ----- ----- Basin Index (%) 149 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.2 * -M 17.0 * CASTLE CREEK 8400 7.6 -M * 13.1 -M * COLD SPRINGS 9630 8.0 3.9 205 13.8 11.3 122 DEER PARK 9700 17.4 16.4 106 20.5 22.1 93 HOBBS PARK 10100 15.5 15.3 101 15.1 15.3 99 KIRWIN 9550 17.6 10.1 174 19.3 12.8 151 LITTLE WARM 9370 13.5 9.9 136 17.8 14.2 125 OWL CREEK 8975 4.2 3.2 131 8.5 7.1 120 SOUTH PASS 9040 15.3 15.3 100 16.0 19.0 84 ST. LAWRENCE ALT 8620 .0 5.1 0 10.0 10.3 97 TOGWOTEE PASS 9580 32.3 24.3 133 34.4 26.0 132 TOWNSEND CREEK 8700 6.5 9.0 72 10.5 13.7 77 ----- ----- Basin Index (%) 116 109 BIGHORN BASIN BALD MTN. 9380 27.6 20.1 137 22.3 18.5 121 BEAR TRAP MEADOW 8200 9.3 2.5 372 12.6 9.7 130 BONE SPRINGS DIV 9350 24.0 16.3 147 19.1 17.1 112 GRAVE SPRINGS 8550 12.7 9.4 135 14.0 11.9 118 KIRWIN 9550 17.6 10.1 174 19.3 12.8 151 MARQUETTE 8760 14.8 -M * 14.3 -M * MIDDLE POWDER 7760 18.6 12.4 150 15.9 13.1 121 OWL CREEK 8975 4.2 3.2 131 8.5 7.1 120 POWDER RIVER PASS 9480 15.0 10.2 147 18.1 14.0 129 SHELL CREEK 9580 19.4 15.7 124 18.4 15.1 122 TIMBER CREEK 7950 4.6 4.2 110 10.4 8.8 118 ----- ----- Basin Index (%) 147 124 SHOSHONE RIVER BLACKWATER 9780 34.4 24.1 143 31.6 22.2 142 EVENING STAR 9200 40.7 24.4 167 42.8 29.1 147 MARQUETTE 8760 14.8 -M * 14.3 -M * SYLVAN ROAD 7120 8.6 8.9 97 23.2 17.8 130 YOUNTS PEAK 8350 -M 15.1 * -M 16.9 * ----- ----- Basin Index (%) 146 141 POWDER RIVER BEAR TRAP MEADOW 8200 9.3 2.5 372 12.6 9.7 130 CLOUD PEAK RESERVOIR 9860 22.3 16.1 139 20.8 15.3 136 GRAVE SPRINGS 8550 12.7 9.4 135 14.0 11.9 118 HANSEN SAWMILL 8360 9.1 4.5 202 14.1 9.9 142 MIDDLE POWDER 7760 18.6 12.4 150 15.9 13.1 121 POWDER RIVER PASS 9480 15.0 10.2 147 18.1 14.0 129 SOLDIER PARK 8720 12.7 -M * 13.5 -M * ----- ----- Basin Index (%) 158 129 TONGUE RIVER BIG GOOSE 7990 13.1 9.2 142 17.1 13.1 131 BONE SPRINGS DIV 9350 24.0 16.3 147 19.1 17.1 112 BURGESS JUNCTION 7880 17.5 12.6 139 18.0 13.7 131 DOME LAKE 8880 16.9 11.8 143 17.3 15.2 114 LITTLE GOOSE 8870 15.3 -M * 19.3 -M * SUCKER CREEK 8880 18.5 12.7 146 21.7 16.1 135 TIE CREEK 6870 7.6 3.9 195 16.9 13.2 128 ----- ----- Basin Index (%) 147 125 BELLE FOURCHE COLE CANYON 5910 5.5 1.4 393 14.8 10.7 138 ----- ----- Basin Index (%) 393 138 CHEYENNE RIVER BASIN BLIND PARK 6890 4.3 3.9 110 17.3 13.4 129 NORTH RAPID CREEK 6130 4.0 3.9 103 16.2 11.4 142 ----- ----- Basin Index (%) 106 135 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.0 21.5 135 29.4 24.7 119 BLACKHALL MTN 9820 39.5 -M * -M -M * COLUMBINE 9160 33.3 20.7 161 -M 27.3 * DIVIDE PEAK 8880 17.2 18.3 94 24.8 23.2 107 JOE WRIGHT 10120 25.0 22.7 110 34.0 28.3 120 LAPRELE CREEK 8375 6.7 7.4 91 12.6 14.0 90 MED BOW 10500 -M -M * 42.4 -M * NORTH FRENCH CREEK 10130 37.8 32.2 117 37.0 29.1 127 NEVER SUMMER 10280 27.1 20.9 130 21.8 -M * OLD BATTLE 10000 36.4 33.5 109 39.1 37.5 104 RAWAH 9020 9.8 8.1 121 18.9 15.8 120 SAGE CREEK BASIN 7850 6.3 4.2 150 13.7 15.4 89 SAND LAKE 10050 35.4 30.7 115 34.8 27.3 127 SOUTH BRUSH CREEK 8440 7.8 9.8 80 16.4 16.8 98 TOWER 10500 54.5 48.8 112 -M 42.8 * WEBBER SPRINGS 9250 23.5 21.8 108 30.3 28.8 105 WILLOW CREEK PASS 9540 16.4 13.5 121 16.6 14.7 113 ZIRKEL 9340 39.5 22.5 176 -M 30.0 * ----- ----- Basin Index (%) 121 112 SWEETWATER DEER PARK 9700 17.4 16.4 106 20.5 22.1 93 LARSEN CREEK 9000 9.5 10.0 95 16.4 -M * SOUTH PASS 9040 15.3 15.3 100 16.0 19.0 84 ----- ----- Basin Index (%) 101 89 LOWER N. PLATTE CASPER MTN. 7900 17.5 14.2 123 17.3 16.9 102 LAPRELE CREEK 8375 6.7 7.4 91 12.6 14.0 90 RENO HILL 8400 18.3 14.0 131 22.6 17.5 129 WINDY PEAK 7900 7.3 6.3 116 13.5 12.0 112 ----- ----- Basin Index (%) 119 109 LARAMIE RIVER BROOKLYN LAKE 10240 31.3 22.5 139 32.0 23.3 137 CINNABAR PARK 9574 26.0 19.9 131 31.2 25.8 121 CROW CREEK 8330 3.5 .2 1750* 13.0 12.2 107 DEADMAN HILL 10220 26.5 17.7 150 25.2 19.4 130 RAWAH 9020 9.8 8.1 121 18.9 15.8 120 ROACH 9700 20.8 16.7 125 26.2 21.0 125 ----- ----- Basin Index (%) 139 125 S. PLATTE BLACK MOUNTAIN 8920 11.1 -M * -M -M * CROW CREEK 8330 3.5 .2 1750* 13.0 12.2 107 DEADMAN HILL 10220 26.5 17.7 150 25.2 19.4 130 ----- ----- Basin Index (%) 168* 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.5 2.9 121 18.8 16.3 115 DIVIDE PEAK 8880 17.2 18.3 94 24.8 23.2 107 ELK RIVER 8700 17.0 14.8 115 24.0 21.7 111 LITTLE SNAKE RIVER 8915 27.3 23.6 116 36.5 31.3 117 OLD BATTLE 10000 36.4 33.5 109 39.1 37.5 104 SAGE CREEK BASIN 7850 6.3 4.2 150 13.7 15.4 89 SANDSTONE RS 8150 7.0 9.6 73 19.2 19.8 97 WHISKEY PARK 8950 39.1 25.6 153 41.9 30.1 139 ----- ----- Basin Index (%) 116 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.4 12.3 125 15.3 14.4 106 BLIND BULL SUM 8650 36.9 24.3 152 23.8 20.5 116 EAST RIM DIVIDE 7930 12.4 9.3 133 16.0 12.3 130 ELKHART PARK G.S. 9400 18.0 11.8 153 17.4 14.3 122 GROS VENTRE SUMMIT 8750 14.6 12.9 113 15.1 13.9 109 GUNSIGHT PASS 9820 19.7 13.6 145 19.5 15.2 128 KENDALL R.S. 7740 18.4 7.3 252 23.3 14.9 156 LOOMIS PARK 8240 22.8 12.3 185 25.4 18.2 140 NEW FORK LAKE 8340 12.6 8.1 156 13.7 11.5 119 POCKET CREEK 9360 12.1 -M * 12.9 -M * SNIDER BASIN 8060 15.5 10.4 149 19.9 15.0 133 SPRING CREEK DIVIDE 9000 37.7 23.6 160 33.7 25.2 134 TRIPLE PEAK 8500 33.6 19.2 175 37.9 26.7 142 ----- ----- Basin Index (%) 156 129 LOWER GREEN RIVER BLACKS FORK JCT 8870 4.1 -M * 14.4 -M * BUCK PASTURE 9700 11.4 -M * 18.1 -M * EF BLACKS FORK GS 9360 6.1 -M * 10.8 -M * HAMS FORK 7840 10.1 5.7 177 14.6 12.3 119 HEWINTA 9519 5.9 7.4 80 15.3 15.3 100 HICKERSON PARK 9145 .9 5.1 18 9.3 11.3 82 HOLE-IN-ROCK 9150 1.6 5.5 29 10.5 10.8 97 INDIAN CREEK 9425 30.8 23.5 131 27.5 24.0 115 KELLEY R.S. 8180 15.9 12.0 132 21.1 19.3 109 SPIRIT LK 10235 8.1 -M * 14.9 -M * STEEL CREEK PARK 10200 20.7 16.4 126 17.5 18.1 97 ----- ----- Basin Index (%) 114 104 UPPER BEAR RIVER BEAR RIVER RS 8777 1.3 -M * 13.5 -M * BUG LAKE 7950 19.7 16.4 120 21.2 20.7 102 BURTS MILLER RANCH 8000 .3 -M * 7.4 -M * CHALK CREEK #1 8993 20.3 24.5 83 24.6 27.2 90 HAYDEN FORK 9212 9.0 11.0 82 22.8 22.7 100 KELLEY R.S. 8180 15.9 12.0 132 21.1 19.3 109 LILY LAKE 9156 10.1 10.1 100 16.3 18.6 88 MONTE CRISTO 8960 22.5 27.3 82 26.5 27.8 95 SALT RIVER SUMMIT 7760 -M 8.9 * 19.4 17.6 110 ----- ----- Basin Index (%) 96 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.