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 11 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 24.0 14.7 163 26.8 21.0 128 BLACK BEAR 8170 41.9 36.7 114 40.6 38.4 106 BLIND BULL SUM 8650 36.5 23.5 155 23.6 19.6 120 COTTONWOOD CREEK 7670 31.3 20.7 151 34.9 24.8 141 EAST RIM DIVIDE 7930 16.7 10.2 164 15.6 11.8 132 GRAND TARGHEE 9260 51.3 39.6 130 -M 31.2 * GRANITE CREEK 6770 23.7 13.6 174 24.3 19.7 123 GRASSY LAKE 7265 43.0 31.4 137 -M 36.1 * GROS VENTRE SUMMIT 8750 14.5 12.8 113 14.8 13.1 113 GUNSIGHT PASS 9820 20.9 13.8 151 19.1 14.1 135 LEWIS LAKE DIVIDE 7850 40.5 30.2 134 -M 35.6 * PHILLIPS BENCH 8200 35.3 25.8 137 34.7 28.3 123 SALT RIVER SUMMIT 7760 17.9 12.3 146 19.4 16.8 115 SNAKE RIVER STATION 6920 -M 14.2 * -M 22.6 * SPRING CREEK DIVIDE 9000 36.1 22.7 159 33.2 23.9 139 THUMB DIVIDE 7980 21.0 14.6 144 18.8 18.8 100 TOGWOTEE PASS 9580 31.7 22.6 140 33.4 24.5 136 TWO OCEAN PLATEAU 9240 40.8 26.6 153 -M 27.4 * WILLOW CREEK 8380 40.6 27.8 146 41.9 33.9 124 YOUNTS PEAK 8350 -M 14.5 * -M 15.9 * ----- ----- Basin Index (%) 142 123 MADISON-GALLATIN BLACK BEAR 8170 41.9 36.7 114 40.6 38.4 106 CANYON 7870 15.4 12.3 125 17.0 16.3 104 MADISON PLATEAU 7750 25.4 22.0 115 25.3 26.4 96 WEST YELLOWSTONE 6700 13.2 8.8 150 16.3 14.2 115 WHISKEY CREEK 6800 17.5 14.7 119 21.2 20.3 104 ----- ----- Basin Index (%) 120 104 YELLOWSTONE BEARTOOTH LAKE 9360 32.0 21.7 147 30.2 19.9 152 BURNT MTN 5880 10.0 3.0 333 19.7 13.2 149 CANYON 7870 15.4 12.3 125 17.0 16.3 104 COLE CREEK 7850 22.6 15.2 149 16.3 13.3 123 EVENING STAR 9200 39.7 24.1 165 40.9 27.6 148 FISHER CREEK 9100 44.4 31.5 141 40.2 31.8 126 NORTHEAST ENTRANCE 7350 15.1 8.6 176 16.0 12.3 130 PARKER PEAK 9400 32.6 20.0 163 29.5 17.8 166 SYLVAN LAKE 8420 25.3 19.7 128 29.1 22.5 129 THUMB DIVIDE 7980 21.0 14.6 144 18.8 18.8 100 TWO OCEAN PLATEAU 9240 40.8 26.6 153 -M 27.4 * WHITE MILL 8700 33.9 22.9 148 29.4 23.9 123 WOLVERINE 7650 17.4 9.4 185 17.2 12.3 140 ----- ----- Basin Index (%) 153 132 WIND RIVER BURROUGHS CREEK 8750 -M 13.0 * -M 16.0 * CASTLE CREEK 8400 9.8 -M * 12.5 -M * COLD SPRINGS 9630 9.7 6.3 154 13.5 10.2 132 DEER PARK 9700 17.1 16.1 106 19.8 20.4 97 HOBBS PARK 10100 16.2 14.6 111 14.5 13.8 105 KIRWIN 9550 19.6 9.7 202 18.4 11.7 157 LITTLE WARM 9370 14.8 10.2 145 17.4 13.0 134 OWL CREEK 8975 8.0 5.7 140 8.3 6.2 134 SOUTH PASS 9040 16.3 15.6 104 15.5 17.7 88 ST. LAWRENCE ALT 8620 4.7 6.9 68 9.4 9.2 102 TOGWOTEE PASS 9580 31.7 22.6 140 33.4 24.5 136 TOWNSEND CREEK 8700 8.1 9.9 82 10.0 12.4 81 ----- ----- Basin Index (%) 124 115 BIGHORN BASIN BALD MTN. 9380 26.6 19.3 138 20.7 17.3 120 BEAR TRAP MEADOW 8200 11.3 4.7 240 11.8 8.8 134 BONE SPRINGS DIV 9350 22.4 17.0 132 17.8 15.8 113 GRAVE SPRINGS 8550 13.2 9.5 139 13.3 11.0 121 KIRWIN 9550 19.6 9.7 202 18.4 11.7 157 MARQUETTE 8760 15.7 -M * 13.9 -M * MIDDLE POWDER 7760 18.3 12.3 149 14.9 12.0 124 OWL CREEK 8975 8.0 5.7 140 8.3 6.2 134 POWDER RIVER PASS 9480 16.0 10.3 155 17.5 12.9 136 SHELL CREEK 9580 20.3 15.5 131 17.4 14.0 124 TIMBER CREEK 7950 6.7 5.1 131 9.4 7.6 124 ----- ----- Basin Index (%) 149 127 SHOSHONE RIVER BLACKWATER 9780 33.1 23.1 143 29.9 20.8 144 EVENING STAR 9200 39.7 24.1 165 40.9 27.6 148 MARQUETTE 8760 15.7 -M * 13.9 -M * SYLVAN ROAD 7120 15.6 10.4 150 22.0 16.8 131 YOUNTS PEAK 8350 -M 14.5 * -M 15.9 * ----- ----- Basin Index (%) 153 142 POWDER RIVER BEAR TRAP MEADOW 8200 11.3 4.7 240 11.8 8.8 134 CLOUD PEAK RESERVOIR 9860 21.4 15.2 141 19.2 13.7 140 GRAVE SPRINGS 8550 13.2 9.5 139 13.3 11.0 121 HANSEN SAWMILL 8360 10.5 6.1 172 12.9 8.8 147 MIDDLE POWDER 7760 18.3 12.3 149 14.9 12.0 124 POWDER RIVER PASS 9480 16.0 10.3 155 17.5 12.9 136 SOLDIER PARK 8720 13.5 -M * 12.4 -M * ----- ----- Basin Index (%) 156 133 TONGUE RIVER BIG GOOSE 7990 12.8 9.9 129 15.3 11.9 129 BONE SPRINGS DIV 9350 22.4 17.0 132 17.8 15.8 113 BURGESS JUNCTION 7880 16.3 12.2 134 16.6 12.7 131 DOME LAKE 8880 16.6 11.9 139 15.5 14.0 111 LITTLE GOOSE 8870 14.9 -M * 17.7 -M * SUCKER CREEK 8880 18.7 12.5 150 20.1 14.8 136 TIE CREEK 6870 9.2 5.3 174 15.6 12.1 129 ----- ----- Basin Index (%) 140 124 BELLE FOURCHE COLE CANYON 5910 7.8 4.3 181 14.4 9.7 148 ----- ----- Basin Index (%) 181 148 CHEYENNE RIVER BASIN BLIND PARK 6890 8.8 6.4 138 16.8 12.2 138 NORTH RAPID CREEK 6130 8.2 6.2 132 15.4 10.2 151 ----- ----- Basin Index (%) 135 144 UPPER N. PLATTE ARAPAHO RIDGE 10960 28.6 21.3 134 27.9 23.2 120 BLACKHALL MTN 9820 39.4 -M * -M -M * COLUMBINE 9160 37.0 23.0 161 -M 25.9 * DIVIDE PEAK 8880 21.3 20.3 105 24.2 21.8 111 JOE WRIGHT 10120 24.5 21.8 112 32.6 26.2 124 LAPRELE CREEK 8375 9.6 9.4 102 11.8 12.8 92 MED BOW 10500 8.9 -M * 36.4 -M * NORTH FRENCH CREEK 10130 38.9 30.7 127 32.9 27.2 121 NEVER SUMMER 10280 25.7 20.5 125 19.9 -M * OLD BATTLE 10000 35.8 31.9 112 38.6 35.5 109 RAWAH 9020 13.7 10.4 132 17.9 14.8 121 SAGE CREEK BASIN 7850 13.0 10.8 120 13.5 14.9 91 SAND LAKE 10050 35.7 29.8 120 34.1 25.2 135 SOUTH BRUSH CREEK 8440 13.3 11.6 115 16.1 15.6 103 TOWER 10500 53.5 46.9 114 -M 40.3 * WEBBER SPRINGS 9250 27.3 23.3 117 29.7 27.1 110 WILLOW CREEK PASS 9540 15.3 12.5 122 15.1 13.7 110 ZIRKEL 9340 42.2 25.5 165 -M 29.0 * ----- ----- Basin Index (%) 125 114 SWEETWATER DEER PARK 9700 17.1 16.1 106 19.8 20.4 97 LARSEN CREEK 9000 12.9 11.2 115 16.1 -M * SOUTH PASS 9040 16.3 15.6 104 15.5 17.7 88 ----- ----- Basin Index (%) 108 93 LOWER N. PLATTE CASPER MTN. 7900 18.9 14.5 130 16.5 15.4 107 LAPRELE CREEK 8375 9.6 9.4 102 11.8 12.8 92 RENO HILL 8400 19.3 14.2 136 21.3 15.9 134 WINDY PEAK 7900 9.1 7.6 120 12.3 10.8 114 ----- ----- Basin Index (%) 125 113 LARAMIE RIVER BROOKLYN LAKE 10240 32.7 22.3 147 31.5 21.5 147 CINNABAR PARK 9574 25.6 21.4 120 30.5 24.6 124 CROW CREEK 8330 6.4 6.3 102 11.7 11.2 104 DEADMAN HILL 10220 26.0 16.5 158 24.5 17.7 138 RAWAH 9020 13.7 10.4 132 17.9 14.8 121 ROACH 9700 22.3 16.6 134 25.0 19.6 128 ----- ----- Basin Index (%) 136 129 S. PLATTE BLACK MOUNTAIN 8920 12.4 -M * -M -M * CROW CREEK 8330 6.4 6.3 102 11.7 11.2 104 DEADMAN HILL 10220 26.0 16.5 158 24.5 17.7 138 ----- ----- Basin Index (%) 142 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.0 8.4 131 18.6 15.2 122 DIVIDE PEAK 8880 21.3 20.3 105 24.2 21.8 111 ELK RIVER 8700 22.4 18.4 122 23.4 20.4 115 LITTLE SNAKE RIVER 8915 32.5 26.0 125 36.2 30.5 119 OLD BATTLE 10000 35.8 31.9 112 38.6 35.5 109 SAGE CREEK BASIN 7850 13.0 10.8 120 13.5 14.9 91 SANDSTONE RS 8150 12.9 12.6 102 19.2 18.6 103 WHISKEY PARK 8950 42.8 27.6 155 41.4 28.3 146 ----- ----- Basin Index (%) 123 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.4 12.9 119 15.2 13.5 113 BLIND BULL SUM 8650 36.5 23.5 155 23.6 19.6 120 EAST RIM DIVIDE 7930 16.7 10.2 164 15.6 11.8 132 ELKHART PARK G.S. 9400 17.8 12.3 145 16.9 13.4 126 GROS VENTRE SUMMIT 8750 14.5 12.8 113 14.8 13.1 113 GUNSIGHT PASS 9820 20.9 13.8 151 19.1 14.1 135 KENDALL R.S. 7740 22.0 10.9 202 23.1 14.3 162 LOOMIS PARK 8240 25.0 13.7 182 24.9 17.4 143 NEW FORK LAKE 8340 16.3 10.1 161 13.6 10.9 125 POCKET CREEK 9360 12.4 -M * 12.7 -M * SNIDER BASIN 8060 19.0 12.2 156 19.6 14.3 137 SPRING CREEK DIVIDE 9000 36.1 22.7 159 33.2 23.9 139 TRIPLE PEAK 8500 -M 21.0 * 37.5 25.5 147 ----- ----- Basin Index (%) 155 134 LOWER GREEN RIVER BLACKS FORK JCT 8870 8.1 -M * 13.8 -M * BUCK PASTURE 9700 16.1 -M * 17.3 -M * EF BLACKS FORK GS 9360 10.6 -M * 10.4 -M * HAMS FORK 7840 15.1 9.7 156 13.9 11.5 121 HEWINTA 9519 12.0 10.6 113 14.7 14.4 102 HICKERSON PARK 9145 7.3 7.7 95 9.3 10.5 89 HOLE-IN-ROCK 9150 6.3 7.1 89 9.9 10.0 99 INDIAN CREEK 9425 33.5 24.8 135 27.2 22.7 120 KELLEY R.S. 8180 19.0 14.3 133 21.3 18.2 117 SPIRIT LK 10235 10.8 -M * 14.5 -M * STEEL CREEK PARK 10200 20.5 16.0 128 16.9 16.9 100 ----- ----- Basin Index (%) 126 109 UPPER BEAR RIVER BEAR RIVER RS 8777 7.8 -M * 12.6 -M * BUG LAKE 7950 24.3 19.0 128 21.2 19.6 108 BURTS MILLER RANCH 8000 4.1 -M * 6.9 -M * CHALK CREEK #1 8993 22.9 24.7 93 23.1 25.6 90 HAYDEN FORK 9212 16.6 14.9 111 21.2 21.4 99 KELLEY R.S. 8180 19.0 14.3 133 21.3 18.2 117 LILY LAKE 9156 14.1 12.7 111 15.4 17.5 88 MONTE CRISTO 8960 27.8 27.9 100 26.2 26.3 100 SALT RIVER SUMMIT 7760 17.9 12.3 146 19.4 16.8 115 ----- ----- Basin Index (%) 113 102 ----------------------------------------------------------------------------- -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.