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: APRIL 18 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 21.5 12.2 176 27.0 21.6 125 BLACK BEAR 8170 42.0 36.8 114 40.9 39.5 104 BLIND BULL SUM 8650 37.3 23.9 156 23.7 20.0 118 COTTONWOOD CREEK 7670 30.1 19.1 158 35.1 25.5 138 EAST RIM DIVIDE 7930 15.9 9.6 166 16.0 12.1 132 GRAND TARGHEE 9260 51.4 41.7 123 -M 32.3 * GRANITE CREEK 6770 22.4 11.4 196 24.4 20.2 121 GRASSY LAKE 7265 42.2 31.5 134 40.6 37.1 109 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.6 110 GUNSIGHT PASS 9820 21.0 13.5 156 19.4 14.6 133 LEWIS LAKE DIVIDE 7850 40.4 30.2 134 40.7 36.5 112 PHILLIPS BENCH 8200 34.5 25.8 134 35.0 28.9 121 SALT RIVER SUMMIT 7760 16.4 10.3 159 19.5 17.2 113 SNAKE RIVER STATION 6920 19.1 11.7 163 26.4 23.3 113 SPRING CREEK DIVIDE 9000 36.5 23.5 155 33.3 24.6 135 THUMB DIVIDE 7980 20.7 14.5 143 19.5 19.5 100 TOGWOTEE PASS 9580 33.0 23.5 140 34.0 25.4 134 TWO OCEAN PLATEAU 9240 41.1 27.8 148 34.7 28.2 123 WILLOW CREEK 8380 41.3 26.8 154 42.1 34.9 121 YOUNTS PEAK 8350 -M 15.0 * -M 16.4 * ----- ----- Basin Index (%) 143 119 MADISON-GALLATIN BLACK BEAR 8170 42.0 36.8 114 40.9 39.5 104 CANYON 7870 15.4 12.4 124 17.1 16.8 102 MADISON PLATEAU 7750 25.3 22.8 111 25.5 27.2 94 WEST YELLOWSTONE 6700 10.7 8.0 134 16.3 14.9 109 WHISKEY CREEK 6800 17.1 15.1 113 21.2 21.0 101 ----- ----- Basin Index (%) 116 101 YELLOWSTONE BEARTOOTH LAKE 9360 32.7 23.0 142 30.9 20.5 151 BURNT MTN 5880 10.3 .0 * 21.2 13.9 153 CANYON 7870 15.4 12.4 124 17.1 16.8 102 COLE CREEK 7850 25.3 16.0 158 18.4 14.2 130 EVENING STAR 9200 40.6 25.0 162 42.0 28.4 148 FISHER CREEK 9100 44.6 32.2 139 40.6 33.0 123 NORTHEAST ENTRANCE 7350 14.6 7.3 200 16.0 12.8 125 PARKER PEAK 9400 34.1 20.8 164 30.4 18.5 164 SYLVAN LAKE 8420 24.7 20.3 122 29.8 23.3 128 THUMB DIVIDE 7980 20.7 14.5 143 19.5 19.5 100 TWO OCEAN PLATEAU 9240 41.1 27.8 148 34.7 28.2 123 WHITE MILL 8700 34.2 23.6 145 29.9 24.7 121 WOLVERINE 7650 15.6 7.8 200 18.0 12.7 142 ----- ----- Basin Index (%) 153 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.1 * -M 16.6 * CASTLE CREEK 8400 9.6 -M * 13.0 -M * COLD SPRINGS 9630 9.4 5.1 184 13.8 10.7 129 DEER PARK 9700 -M 16.1 * 20.2 21.1 96 HOBBS PARK 10100 16.4 14.8 111 14.9 14.5 103 KIRWIN 9550 20.3 10.0 203 19.2 12.2 157 LITTLE WARM 9370 14.6 10.2 143 17.7 13.7 129 OWL CREEK 8975 7.3 4.4 166 8.5 6.6 129 SOUTH PASS 9040 15.9 15.7 101 15.9 18.3 87 ST. LAWRENCE ALT 8620 3.2 5.7 56 9.3 9.7 96 TOGWOTEE PASS 9580 33.0 23.5 140 34.0 25.4 134 TOWNSEND CREEK 8700 8.1 9.7 84 10.3 13.0 79 ----- ----- Basin Index (%) 129 113 BIGHORN BASIN BALD MTN. 9380 27.9 19.6 142 22.1 18.0 123 BEAR TRAP MEADOW 8200 11.4 3.8 300 12.6 9.2 137 BONE SPRINGS DIV 9350 23.9 16.3 147 18.9 16.5 115 GRAVE SPRINGS 8550 13.6 9.7 140 14.1 11.4 124 KIRWIN 9550 20.3 10.0 203 19.2 12.2 157 MARQUETTE 8760 16.0 -M * 14.3 -M * MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.5 127 OWL CREEK 8975 7.3 4.4 166 8.5 6.6 129 POWDER RIVER PASS 9480 16.6 10.1 164 18.0 13.5 133 SHELL CREEK 9580 21.2 15.3 139 18.3 14.6 125 TIMBER CREEK 7950 7.1 5.1 139 10.4 8.2 127 ----- ----- Basin Index (%) 158 129 SHOSHONE RIVER BLACKWATER 9780 33.9 23.8 142 30.9 21.6 143 EVENING STAR 9200 40.6 25.0 162 42.0 28.4 148 MARQUETTE 8760 16.0 -M * 14.3 -M * SYLVAN ROAD 7120 13.3 10.2 130 22.5 17.4 129 YOUNTS PEAK 8350 -M 15.0 * -M 16.4 * ----- ----- Basin Index (%) 149 142 POWDER RIVER BEAR TRAP MEADOW 8200 11.4 3.8 300 12.6 9.2 137 CLOUD PEAK RESERVOIR 9860 22.9 15.6 147 20.6 14.5 142 GRAVE SPRINGS 8550 13.6 9.7 140 14.1 11.4 124 HANSEN SAWMILL 8360 11.1 5.2 213 13.8 9.3 148 MIDDLE POWDER 7760 19.7 12.5 158 15.9 12.5 127 POWDER RIVER PASS 9480 16.6 10.1 164 18.0 13.5 133 SOLDIER PARK 8720 14.8 -M * 13.6 -M * ----- ----- Basin Index (%) 167 135 TONGUE RIVER BIG GOOSE 7990 14.1 9.5 148 17.0 12.4 137 BONE SPRINGS DIV 9350 23.9 16.3 147 18.9 16.5 115 BURGESS JUNCTION 7880 18.0 12.3 146 18.0 13.2 136 DOME LAKE 8880 17.8 11.9 150 17.1 14.6 117 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 19.5 12.7 154 21.7 15.5 140 TIE CREEK 6870 9.7 4.5 216 16.9 12.6 134 ----- ----- Basin Index (%) 153 129 BELLE FOURCHE COLE CANYON 5910 7.5 2.4 312 14.7 10.1 146 ----- ----- Basin Index (%) 312 146 CHEYENNE RIVER BASIN BLIND PARK 6890 8.0 4.4 182 17.4 12.6 138 NORTH RAPID CREEK 6130 7.4 4.6 161 16.1 10.5 153 ----- ----- Basin Index (%) 171 145 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.9 21.4 140 29.5 24.0 123 BLACKHALL MTN 9820 39.8 -M * -M -M * COLUMBINE 9160 36.7 21.0 175 -M 26.6 * DIVIDE PEAK 8880 20.5 19.3 106 24.8 22.5 110 JOE WRIGHT 10120 26.1 22.1 118 33.9 27.4 124 LAPRELE CREEK 8375 9.5 8.6 110 12.5 13.4 93 MED BOW 10500 -M -M * 37.7 -M * NORTH FRENCH CREEK 10130 38.9 32.0 122 36.7 28.1 131 NEVER SUMMER 10280 27.0 20.6 131 21.4 -M * OLD BATTLE 10000 36.0 32.4 111 39.1 36.6 107 RAWAH 9020 13.1 8.9 147 18.7 15.5 121 SAGE CREEK BASIN 7850 10.7 7.1 151 13.6 15.1 90 SAND LAKE 10050 36.0 30.4 118 34.8 26.4 132 SOUTH BRUSH CREEK 8440 10.6 10.1 105 16.3 16.2 101 TOWER 10500 54.2 47.7 114 -M 41.6 * WEBBER SPRINGS 9250 26.9 22.6 119 30.3 28.0 108 WILLOW CREEK PASS 9540 16.5 12.8 129 16.5 14.2 116 ZIRKEL 9340 41.6 23.0 181 -M 29.5 * ----- ----- Basin Index (%) 128 115 SWEETWATER DEER PARK 9700 -M 16.1 * 20.2 21.1 96 LARSEN CREEK 9000 11.7 10.5 111 16.2 -M * SOUTH PASS 9040 15.9 15.7 101 15.9 18.3 87 ----- ----- Basin Index (%) 105 92 LOWER N. PLATTE CASPER MTN. 7900 19.7 14.5 136 17.3 16.2 107 LAPRELE CREEK 8375 9.5 8.6 110 12.5 13.4 93 RENO HILL 8400 20.5 14.0 146 22.6 16.8 135 WINDY PEAK 7900 9.3 6.9 135 13.5 11.4 118 ----- ----- Basin Index (%) 134 114 LARAMIE RIVER BROOKLYN LAKE 10240 32.7 22.1 148 32.0 22.4 143 CINNABAR PARK 9574 26.6 20.5 130 31.3 25.2 124 CROW CREEK 8330 6.4 1.7 376 12.9 11.9 108 DEADMAN HILL 10220 26.3 16.6 158 25.3 18.6 136 RAWAH 9020 13.1 8.9 147 18.7 15.5 121 ROACH 9700 23.1 16.5 140 26.3 20.3 130 ----- ----- Basin Index (%) 149 129 S. PLATTE BLACK MOUNTAIN 8920 13.1 -M * -M -M * CROW CREEK 8330 6.4 1.7 376 12.9 11.9 108 DEADMAN HILL 10220 26.3 16.6 158 25.3 18.6 136 ----- ----- Basin Index (%) 179 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.8 5.4 144 18.8 15.8 119 DIVIDE PEAK 8880 20.5 19.3 106 24.8 22.5 110 ELK RIVER 8700 21.0 16.1 130 23.9 21.0 114 LITTLE SNAKE RIVER 8915 31.1 25.0 124 36.4 31.0 117 OLD BATTLE 10000 36.0 32.4 111 39.1 36.6 107 SAGE CREEK BASIN 7850 10.7 7.1 151 13.6 15.1 90 SANDSTONE RS 8150 10.3 10.8 95 19.2 19.2 100 WHISKEY PARK 8950 41.5 26.2 158 42.0 29.3 143 ----- ----- Basin Index (%) 126 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.4 12.7 121 15.3 13.9 110 BLIND BULL SUM 8650 37.3 23.9 156 23.7 20.0 118 EAST RIM DIVIDE 7930 15.9 9.6 166 16.0 12.1 132 ELKHART PARK G.S. 9400 18.2 12.0 152 17.4 13.9 125 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.6 110 GUNSIGHT PASS 9820 21.0 13.5 156 19.4 14.6 133 KENDALL R.S. 7740 20.7 9.0 230 23.2 14.6 159 LOOMIS PARK 8240 24.6 13.2 186 25.3 17.8 142 NEW FORK LAKE 8340 14.9 9.2 162 13.7 11.2 122 POCKET CREEK 9360 12.5 -M * 12.9 -M * SNIDER BASIN 8060 17.2 11.1 155 19.8 14.6 136 SPRING CREEK DIVIDE 9000 36.5 23.5 155 33.3 24.6 135 TRIPLE PEAK 8500 35.1 19.3 182 37.6 26.1 144 ----- ----- Basin Index (%) 159 132 LOWER GREEN RIVER BLACKS FORK JCT 8870 7.0 -M * 14.1 -M * BUCK PASTURE 9700 14.9 -M * 17.9 -M * EF BLACKS FORK GS 9360 9.0 -M * 10.6 -M * HAMS FORK 7840 13.4 7.5 179 14.3 11.8 121 HEWINTA 9519 9.3 8.7 107 15.4 14.8 104 HICKERSON PARK 9145 5.0 5.8 86 9.5 10.9 87 HOLE-IN-ROCK 9150 5.1 6.2 82 10.4 10.4 100 INDIAN CREEK 9425 33.1 23.3 142 27.5 23.3 118 KELLEY R.S. 8180 17.8 13.1 136 21.2 18.7 113 SPIRIT LK 10235 10.1 -M * 14.8 -M * STEEL CREEK PARK 10200 20.9 16.1 130 17.3 17.5 99 ----- ----- Basin Index (%) 130 108 UPPER BEAR RIVER BEAR RIVER RS 8777 5.5 -M * 13.3 -M * BUG LAKE 7950 23.0 18.0 128 21.2 20.1 105 BURTS MILLER RANCH 8000 .6 -M * 7.3 -M * CHALK CREEK #1 8993 22.9 24.8 92 24.3 26.4 92 HAYDEN FORK 9212 13.8 12.6 110 22.3 22.1 101 KELLEY R.S. 8180 17.8 13.1 136 21.2 18.7 113 LILY LAKE 9156 12.9 11.3 114 16.0 18.1 88 MONTE CRISTO 8960 26.0 27.6 94 26.4 27.0 98 SALT RIVER SUMMIT 7760 16.4 10.3 159 19.5 17.2 113 ----- ----- Basin Index (%) 113 101 ----------------------------------------------------------------------------- -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.