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 THURSDAY: APRIL 17 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 22.5 12.5 180 27.0 21.5 126 BLACK BEAR 8170 -M 36.8 * -M 39.3 * BLIND BULL SUM 8650 37.1 23.9 155 23.6 20.0 118 COTTONWOOD CREEK 7670 30.7 19.3 159 35.1 25.3 139 EAST RIM DIVIDE 7930 -M 9.7 * -M 12.0 * GRAND TARGHEE 9260 51.3 41.5 124 -M 32.3 * GRANITE CREEK 6770 22.7 11.7 194 24.4 20.1 121 GRASSY LAKE 7265 41.9 31.6 133 40.6 36.9 110 GROS VENTRE SUMMIT 8750 14.5 13.1 111 14.9 13.5 110 GUNSIGHT PASS 9820 21.7 13.4 162 19.3 14.6 132 LEWIS LAKE DIVIDE 7850 -M 30.2 * -M 36.4 * PHILLIPS BENCH 8200 35.2 25.9 136 35.0 28.8 122 SALT RIVER SUMMIT 7760 -M 10.6 * -M 17.1 * SNAKE RIVER STATION 6920 20.4 12.1 169 26.4 23.2 114 SPRING CREEK DIVIDE 9000 36.5 23.4 156 33.3 24.4 136 THUMB DIVIDE 7980 20.7 14.4 144 19.5 19.3 101 TOGWOTEE PASS 9580 33.2 23.3 142 34.0 25.2 135 TWO OCEAN PLATEAU 9240 40.9 27.6 148 34.7 28.1 123 WILLOW CREEK 8380 40.5 26.7 152 42.1 34.6 122 YOUNTS PEAK 8350 -M 14.9 * -M 16.4 * ----- ----- Basin Index (%) 147 122 MADISON-GALLATIN BLACK BEAR 8170 -M 36.8 * -M 39.3 * CANYON 7870 15.7 12.4 127 17.1 16.8 102 MADISON PLATEAU 7750 -M 22.7 * -M 27.1 * WEST YELLOWSTONE 6700 -M 8.1 * -M 14.8 * WHISKEY CREEK 6800 -M 14.9 * -M 20.9 * ----- ----- Basin Index (%) 127* 102* YELLOWSTONE BEARTOOTH LAKE 9360 32.7 22.8 143 30.8 20.4 151 BURNT MTN 5880 10.6 .0 * 21.2 13.7 155 CANYON 7870 15.7 12.4 127 17.1 16.8 102 COLE CREEK 7850 25.3 15.9 159 18.4 14.2 130 EVENING STAR 9200 40.4 25.0 162 42.0 28.3 148 FISHER CREEK 9100 44.5 32.1 139 40.6 32.9 123 NORTHEAST ENTRANCE 7350 14.5 7.6 191 16.0 12.7 126 PARKER PEAK 9400 34.0 20.7 164 30.3 18.4 165 SYLVAN LAKE 8420 25.0 20.2 124 29.7 23.2 128 THUMB DIVIDE 7980 20.7 14.4 144 19.5 19.3 101 TWO OCEAN PLATEAU 9240 40.9 27.6 148 34.7 28.1 123 WHITE MILL 8700 34.2 23.6 145 29.8 24.6 121 WOLVERINE 7650 16.2 8.1 200 17.9 12.6 142 ----- ----- Basin Index (%) 154 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.0 * -M 16.5 * CASTLE CREEK 8400 9.8 -M * 13.1 -M * COLD SPRINGS 9630 9.2 5.4 170 13.8 10.6 130 DEER PARK 9700 17.6 16.0 110 20.1 21.0 96 HOBBS PARK 10100 16.5 14.8 111 14.9 14.4 103 KIRWIN 9550 20.4 10.0 204 19.0 12.2 156 LITTLE WARM 9370 14.8 10.2 145 17.7 13.6 130 OWL CREEK 8975 7.6 4.7 162 8.5 6.6 129 SOUTH PASS 9040 16.5 15.7 105 15.9 18.2 87 ST. LAWRENCE ALT 8620 3.4 6.0 57 9.1 9.6 95 TOGWOTEE PASS 9580 33.2 23.3 142 34.0 25.2 135 TOWNSEND CREEK 8700 8.1 9.8 83 10.1 12.9 78 ----- ----- Basin Index (%) 127 113 BIGHORN BASIN BALD MTN. 9380 27.9 19.5 143 22.0 17.9 123 BEAR TRAP MEADOW 8200 11.3 4.0 282 12.4 9.2 135 BONE SPRINGS DIV 9350 23.8 16.4 145 18.7 16.4 114 GRAVE SPRINGS 8550 13.6 9.6 142 14.0 11.3 124 KIRWIN 9550 20.4 10.0 204 19.0 12.2 156 MARQUETTE 8760 15.9 -M * 14.2 -M * MIDDLE POWDER 7760 19.7 12.5 158 15.8 12.5 126 OWL CREEK 8975 7.6 4.7 162 8.5 6.6 129 POWDER RIVER PASS 9480 16.6 10.1 164 17.9 13.4 134 SHELL CREEK 9580 21.2 15.3 139 18.2 14.5 126 TIMBER CREEK 7950 7.5 5.1 147 10.4 8.1 128 ----- ----- Basin Index (%) 158 129 SHOSHONE RIVER BLACKWATER 9780 33.8 23.7 143 30.8 21.5 143 EVENING STAR 9200 40.4 25.0 162 42.0 28.3 148 MARQUETTE 8760 15.9 -M * 14.2 -M * SYLVAN ROAD 7120 14.0 10.2 137 22.4 17.2 130 YOUNTS PEAK 8350 -M 14.9 * -M 16.4 * ----- ----- Basin Index (%) 150 142 POWDER RIVER BEAR TRAP MEADOW 8200 11.3 4.0 282 12.4 9.2 135 CLOUD PEAK RESERVOIR 9860 22.7 15.5 146 20.5 14.4 142 GRAVE SPRINGS 8550 13.6 9.6 142 14.0 11.3 124 HANSEN SAWMILL 8360 11.1 5.4 206 13.7 9.3 147 MIDDLE POWDER 7760 19.7 12.5 158 15.8 12.5 126 POWDER RIVER PASS 9480 16.6 10.1 164 17.9 13.4 134 SOLDIER PARK 8720 14.7 -M * 13.4 -M * ----- ----- Basin Index (%) 166 135 TONGUE RIVER BIG GOOSE 7990 14.0 9.6 146 16.8 12.2 138 BONE SPRINGS DIV 9350 23.8 16.4 145 18.7 16.4 114 BURGESS JUNCTION 7880 18.0 12.2 148 17.8 13.1 136 DOME LAKE 8880 17.8 11.9 150 17.0 14.5 117 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 19.6 12.7 154 21.5 15.4 140 TIE CREEK 6870 9.8 4.5 218 16.7 12.4 135 ----- ----- Basin Index (%) 153 129 BELLE FOURCHE COLE CANYON 5910 7.5 2.6 288 14.7 10.1 146 ----- ----- Basin Index (%) 288 146 CHEYENNE RIVER BASIN BLIND PARK 6890 8.1 4.6 176 17.4 12.5 139 NORTH RAPID CREEK 6130 7.6 4.8 158 15.9 10.5 151 ----- ----- Basin Index (%) 167 145 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.9 21.5 139 29.4 23.9 123 BLACKHALL MTN 9820 39.7 -M * -M -M * COLUMBINE 9160 36.6 21.2 173 -M 26.6 * DIVIDE PEAK 8880 20.7 19.6 106 24.7 22.4 110 JOE WRIGHT 10120 25.9 22.1 117 34.0 27.2 125 LAPRELE CREEK 8375 9.5 8.8 108 12.4 13.3 93 MED BOW 10500 -M -M * 37.4 -M * NORTH FRENCH CREEK 10130 38.9 32.0 122 36.5 28.0 130 NEVER SUMMER 10280 27.1 20.6 132 21.4 -M * OLD BATTLE 10000 36.0 32.3 111 39.0 36.4 107 RAWAH 9020 13.6 9.2 148 18.7 15.3 122 SAGE CREEK BASIN 7850 11.5 7.6 151 13.7 15.0 91 SAND LAKE 10050 35.7 30.4 117 34.6 26.2 132 SOUTH BRUSH CREEK 8440 11.5 10.3 112 16.2 16.1 101 TOWER 10500 54.1 47.5 114 -M 41.4 * WEBBER SPRINGS 9250 27.3 22.8 120 30.3 27.9 109 WILLOW CREEK PASS 9540 16.6 12.7 131 16.5 14.1 117 ZIRKEL 9340 41.6 23.2 179 -M 29.5 * ----- ----- Basin Index (%) 128 115 SWEETWATER DEER PARK 9700 17.6 16.0 110 20.1 21.0 96 LARSEN CREEK 9000 11.8 10.6 111 16.0 -M * SOUTH PASS 9040 16.5 15.7 105 15.9 18.2 87 ----- ----- Basin Index (%) 109 92 LOWER N. PLATTE CASPER MTN. 7900 19.7 14.4 137 17.2 16.2 106 LAPRELE CREEK 8375 9.5 8.8 108 12.4 13.3 93 RENO HILL 8400 20.6 14.1 146 22.4 16.6 135 WINDY PEAK 7900 9.4 7.1 132 13.5 11.3 119 ----- ----- Basin Index (%) 133 114 LARAMIE RIVER BROOKLYN LAKE 10240 32.8 22.1 148 32.1 22.3 144 CINNABAR PARK 9574 26.7 20.7 129 31.4 25.0 126 CROW CREEK 8330 6.6 2.3 287 12.9 11.7 110 DEADMAN HILL 10220 26.5 16.5 161 25.3 18.4 138 RAWAH 9020 13.6 9.2 148 18.7 15.3 122 ROACH 9700 23.3 16.5 141 26.3 20.2 130 ----- ----- Basin Index (%) 148 130 S. PLATTE BLACK MOUNTAIN 8920 13.1 -M * -M -M * CROW CREEK 8330 6.6 2.3 287 12.9 11.7 110 DEADMAN HILL 10220 26.5 16.5 161 25.3 18.4 138 ----- ----- Basin Index (%) 176 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.7 5.8 150 18.7 15.8 118 DIVIDE PEAK 8880 20.7 19.6 106 24.7 22.4 110 ELK RIVER 8700 21.9 16.5 133 23.7 20.9 113 LITTLE SNAKE RIVER 8915 31.7 25.3 125 36.4 30.9 118 OLD BATTLE 10000 36.0 32.3 111 39.0 36.4 107 SAGE CREEK BASIN 7850 11.5 7.6 151 13.7 15.0 91 SANDSTONE RS 8150 10.7 11.1 96 19.1 19.1 100 WHISKEY PARK 8950 41.8 26.5 158 42.1 29.1 145 ----- ----- Basin Index (%) 126 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.5 12.8 121 15.3 13.8 111 BLIND BULL SUM 8650 37.1 23.9 155 23.6 20.0 118 EAST RIM DIVIDE 7930 -M 9.7 * -M 12.0 * ELKHART PARK G.S. 9400 18.4 12.0 153 17.2 13.8 125 GROS VENTRE SUMMIT 8750 14.5 13.1 111 14.9 13.5 110 GUNSIGHT PASS 9820 21.7 13.4 162 19.3 14.6 132 KENDALL R.S. 7740 21.0 9.3 226 23.2 14.6 159 LOOMIS PARK 8240 25.0 13.3 188 25.2 17.7 142 NEW FORK LAKE 8340 15.4 9.3 166 13.6 11.1 123 POCKET CREEK 9360 12.3 -M * 12.8 -M * SNIDER BASIN 8060 17.7 11.3 157 19.7 14.6 135 SPRING CREEK DIVIDE 9000 36.5 23.4 156 33.3 24.4 136 TRIPLE PEAK 8500 34.8 19.3 180 37.6 26.0 145 ----- ----- Basin Index (%) 160 132 LOWER GREEN RIVER BLACKS FORK JCT 8870 -M -M * -M -M * BUCK PASTURE 9700 15.6 -M * 17.9 -M * EF BLACKS FORK GS 9360 9.4 -M * 10.6 -M * HAMS FORK 7840 14.4 7.8 185 14.2 11.8 120 HEWINTA 9519 10.7 9.1 118 14.9 14.6 102 HICKERSON PARK 9145 5.6 6.1 92 9.4 10.8 87 HOLE-IN-ROCK 9150 5.4 6.4 84 10.3 10.3 100 INDIAN CREEK 9425 33.5 23.5 143 27.5 23.2 119 KELLEY R.S. 8180 18.6 13.4 139 21.1 18.6 113 SPIRIT LK 10235 -M -M * -M -M * STEEL CREEK PARK 10200 21.2 16.1 132 17.3 17.4 99 ----- ----- Basin Index (%) 133 107 UPPER BEAR RIVER BEAR RIVER RS 8777 6.6 -M * 13.3 -M * BUG LAKE 7950 23.5 18.4 128 21.1 20.0 106 BURTS MILLER RANCH 8000 1.7 -M * 7.2 -M * CHALK CREEK #1 8993 23.1 24.9 93 24.3 26.3 92 HAYDEN FORK 9212 15.3 13.0 118 22.2 22.0 101 KELLEY R.S. 8180 18.6 13.4 139 21.1 18.6 113 LILY LAKE 9156 14.0 11.7 120 16.0 18.0 89 MONTE CRISTO 8960 26.8 27.6 97 26.3 26.9 98 SALT RIVER SUMMIT 7760 -M 10.6 * -M 17.1 * ----- ----- Basin Index (%) 111 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.