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 TUESDAY: APRIL 15 , 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 13.2 170 26.9 21.3 126 BLACK BEAR 8170 -M 36.6 * -M 39.0 * BLIND BULL SUM 8650 -M 23.8 * -M 19.8 * COTTONWOOD CREEK 7670 30.7 19.8 155 35.0 25.2 139 EAST RIM DIVIDE 7930 -M 10.0 * -M 11.9 * GRAND TARGHEE 9260 51.2 41.0 125 37.5 32.0 117 GRANITE CREEK 6770 -M 12.3 * -M 19.9 * GRASSY LAKE 7265 -M 31.5 * -M 36.6 * GROS VENTRE SUMMIT 8750 14.3 13.0 110 14.8 13.3 111 GUNSIGHT PASS 9820 20.8 13.4 155 19.1 14.3 134 LEWIS LAKE DIVIDE 7850 -M 30.2 * -M 36.1 * PHILLIPS BENCH 8200 35.0 26.0 135 34.8 28.6 122 SALT RIVER SUMMIT 7760 -M 11.2 * -M 17.0 * SNAKE RIVER STATION 6920 21.0 12.8 164 26.4 22.9 115 SPRING CREEK DIVIDE 9000 36.4 23.2 157 33.2 24.3 137 THUMB DIVIDE 7980 20.6 14.4 143 19.4 19.0 102 TOGWOTEE PASS 9580 32.5 23.0 141 33.5 24.9 135 TWO OCEAN PLATEAU 9240 40.7 27.2 150 34.3 27.9 123 WILLOW CREEK 8380 40.2 26.7 151 42.1 34.4 122 YOUNTS PEAK 8350 -M 14.7 * -M 16.2 * ----- ----- Basin Index (%) 144 124 MADISON-GALLATIN BLACK BEAR 8170 -M 36.6 * -M 39.0 * CANYON 7870 15.7 12.4 127 17.1 16.6 103 MADISON PLATEAU 7750 -M 22.5 * -M 26.8 * WEST YELLOWSTONE 6700 -M 8.2 * -M 14.4 * WHISKEY CREEK 6800 -M 14.8 * -M 20.6 * ----- ----- Basin Index (%) 127* 103* YELLOWSTONE BEARTOOTH LAKE 9360 32.3 22.4 144 30.4 20.3 150 BURNT MTN 5880 10.8 .2 5400* 21.2 13.5 157 CANYON 7870 15.7 12.4 127 17.1 16.6 103 COLE CREEK 7850 25.3 15.6 162 18.4 14.0 131 EVENING STAR 9200 40.2 24.7 163 41.8 28.1 149 FISHER CREEK 9100 44.2 31.9 139 40.3 32.6 124 NORTHEAST ENTRANCE 7350 14.6 8.0 182 15.9 12.6 126 PARKER PEAK 9400 33.3 20.5 162 30.1 18.2 165 SYLVAN LAKE 8420 -M 20.0 * -M 22.9 * THUMB DIVIDE 7980 20.6 14.4 143 19.4 19.0 102 TWO OCEAN PLATEAU 9240 40.7 27.2 150 34.3 27.9 123 WHITE MILL 8700 -M 23.5 * -M 24.4 * WOLVERINE 7650 17.3 8.6 201 17.9 12.6 142 ----- ----- Basin Index (%) 159 133 WIND RIVER BURROUGHS CREEK 8750 -M 12.9 * -M 16.3 * CASTLE CREEK 8400 9.7 -M * 12.9 -M * COLD SPRINGS 9630 9.6 5.8 166 13.7 10.4 132 DEER PARK 9700 17.1 16.0 107 20.0 20.7 97 HOBBS PARK 10100 16.4 14.9 110 14.7 14.2 104 KIRWIN 9550 20.0 9.9 202 18.8 12.0 157 LITTLE WARM 9370 14.7 10.2 144 17.5 13.4 131 OWL CREEK 8975 7.8 5.1 153 8.4 6.4 131 SOUTH PASS 9040 15.9 15.8 101 15.8 18.0 88 ST. LAWRENCE ALT 8620 3.9 6.4 61 9.6 9.4 102 TOGWOTEE PASS 9580 32.5 23.0 141 33.5 24.9 135 TOWNSEND CREEK 8700 8.2 10.0 82 10.1 12.8 79 ----- ----- Basin Index (%) 125 114 BIGHORN BASIN BALD MTN. 9380 27.3 19.4 141 21.7 17.7 123 BEAR TRAP MEADOW 8200 11.1 4.4 252 12.3 9.1 135 BONE SPRINGS DIV 9350 23.4 16.8 139 18.3 16.2 113 GRAVE SPRINGS 8550 13.1 9.6 136 13.6 11.2 121 KIRWIN 9550 20.0 9.9 202 18.8 12.0 157 MARQUETTE 8760 15.9 -M * 14.3 -M * MIDDLE POWDER 7760 18.6 12.4 150 15.3 12.4 123 OWL CREEK 8975 7.8 5.1 153 8.4 6.4 131 POWDER RIVER PASS 9480 16.6 10.2 163 17.6 13.2 133 SHELL CREEK 9580 20.9 15.5 135 18.0 14.4 125 TIMBER CREEK 7950 7.2 5.2 138 10.2 7.9 129 ----- ----- Basin Index (%) 153 128 SHOSHONE RIVER BLACKWATER 9780 33.5 23.7 141 30.5 21.3 143 EVENING STAR 9200 40.2 24.7 163 41.8 28.1 149 MARQUETTE 8760 15.9 -M * 14.3 -M * SYLVAN ROAD 7120 14.4 10.3 140 22.4 17.1 131 YOUNTS PEAK 8350 -M 14.7 * -M 16.2 * ----- ----- Basin Index (%) 150 142 POWDER RIVER BEAR TRAP MEADOW 8200 11.1 4.4 252 12.3 9.1 135 CLOUD PEAK RESERVOIR 9860 22.3 15.4 145 20.2 14.2 142 GRAVE SPRINGS 8550 13.1 9.6 136 13.6 11.2 121 HANSEN SAWMILL 8360 11.1 5.9 188 13.7 9.1 151 MIDDLE POWDER 7760 18.6 12.4 150 15.3 12.4 123 POWDER RIVER PASS 9480 16.6 10.2 163 17.6 13.2 133 SOLDIER PARK 8720 14.4 -M * 13.2 -M * ----- ----- Basin Index (%) 160 134 TONGUE RIVER BIG GOOSE 7990 13.5 9.7 139 16.5 12.1 136 BONE SPRINGS DIV 9350 23.4 16.8 139 18.3 16.2 113 BURGESS JUNCTION 7880 17.5 12.1 145 17.5 13.0 135 DOME LAKE 8880 17.5 12.0 146 16.6 14.3 116 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 19.2 12.6 152 21.0 15.1 139 TIE CREEK 6870 9.5 4.8 198 16.4 12.3 133 ----- ----- Basin Index (%) 148 128 BELLE FOURCHE COLE CANYON 5910 7.3 3.2 228 14.6 10.0 146 ----- ----- Basin Index (%) 228 146 CHEYENNE RIVER BASIN BLIND PARK 6890 8.0 5.1 157 17.0 12.4 137 NORTH RAPID CREEK 6130 7.6 5.5 138 15.5 10.4 149 ----- ----- Basin Index (%) 147 143 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.8 21.6 138 29.3 23.7 124 BLACKHALL MTN 9820 39.5 -M * -M -M * COLUMBINE 9160 36.7 21.8 168 -M 26.4 * DIVIDE PEAK 8880 20.9 20.0 104 24.8 22.2 112 JOE WRIGHT 10120 25.8 22.1 117 34.9 26.9 130 LAPRELE CREEK 8375 9.6 9.0 107 12.3 13.2 93 MED BOW 10500 -M -M * 37.3 -M * NORTH FRENCH CREEK 10130 38.6 31.8 121 36.4 27.8 131 NEVER SUMMER 10280 26.8 20.5 131 21.3 -M * OLD BATTLE 10000 36.2 32.2 112 38.9 36.2 107 RAWAH 9020 13.5 9.6 141 18.6 15.0 124 SAGE CREEK BASIN 7850 12.2 8.8 139 13.7 15.0 91 SAND LAKE 10050 35.6 30.4 117 34.1 25.9 132 SOUTH BRUSH CREEK 8440 12.4 10.9 114 16.1 15.9 101 TOWER 10500 -M 47.4 * -M 41.1 * WEBBER SPRINGS 9250 27.5 23.3 118 30.5 27.7 110 WILLOW CREEK PASS 9540 16.7 12.7 131 16.4 14.0 117 ZIRKEL 9340 41.7 23.9 174 -M 29.2 * ----- ----- Basin Index (%) 129 116 SWEETWATER DEER PARK 9700 17.1 16.0 107 20.0 20.7 97 LARSEN CREEK 9000 12.0 10.8 111 16.1 -M * SOUTH PASS 9040 15.9 15.8 101 15.8 18.0 88 ----- ----- Basin Index (%) 106 93 LOWER N. PLATTE CASPER MTN. 7900 19.4 14.4 135 17.0 16.0 106 LAPRELE CREEK 8375 9.6 9.0 107 12.3 13.2 93 RENO HILL 8400 20.2 14.1 143 22.2 16.5 135 WINDY PEAK 7900 9.4 7.4 127 13.3 11.2 119 ----- ----- Basin Index (%) 131 114 LARAMIE RIVER BROOKLYN LAKE 10240 32.3 22.2 145 31.9 22.1 144 CINNABAR PARK 9574 26.2 21.0 125 31.2 24.9 125 CROW CREEK 8330 6.5 4.1 159 12.8 11.5 111 DEADMAN HILL 10220 26.2 16.5 159 25.3 18.2 139 RAWAH 9020 13.5 9.6 141 18.6 15.0 124 ROACH 9700 23.1 16.5 140 26.2 20.0 131 ----- ----- Basin Index (%) 142 131 S. PLATTE BLACK MOUNTAIN 8920 12.9 -M * -M -M * CROW CREEK 8330 6.5 4.1 159 12.8 11.5 111 DEADMAN HILL 10220 26.2 16.5 159 25.3 18.2 139 ----- ----- Basin Index (%) 159 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.7 6.7 145 18.7 15.6 120 DIVIDE PEAK 8880 20.9 20.0 104 24.8 22.2 112 ELK RIVER 8700 21.9 17.2 127 23.9 20.7 115 LITTLE SNAKE RIVER 8915 32.2 25.8 125 36.5 30.7 119 OLD BATTLE 10000 36.2 32.2 112 38.9 36.2 107 SAGE CREEK BASIN 7850 12.2 8.8 139 13.7 15.0 91 SANDSTONE RS 8150 11.6 11.8 98 19.1 19.0 101 WHISKEY PARK 8950 41.8 27.0 155 42.3 28.8 147 ----- ----- Basin Index (%) 125 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.3 12.9 119 15.2 13.7 111 BLIND BULL SUM 8650 -M 23.8 * -M 19.8 * EAST RIM DIVIDE 7930 -M 10.0 * -M 11.9 * ELKHART PARK G.S. 9400 18.1 12.0 151 17.2 13.7 126 GROS VENTRE SUMMIT 8750 14.3 13.0 110 14.8 13.3 111 GUNSIGHT PASS 9820 20.8 13.4 155 19.1 14.3 134 KENDALL R.S. 7740 21.1 9.8 215 23.0 14.4 160 LOOMIS PARK 8240 24.8 13.6 182 24.9 17.6 141 NEW FORK LAKE 8340 15.5 9.6 161 13.6 11.0 124 POCKET CREEK 9360 12.2 -M * 12.8 -M * SNIDER BASIN 8060 -M 11.6 * -M 14.5 * SPRING CREEK DIVIDE 9000 36.4 23.2 157 33.2 24.3 137 TRIPLE PEAK 8500 34.3 19.7 174 37.4 25.8 145 ----- ----- Basin Index (%) 158 134 LOWER GREEN RIVER BLACKS FORK JCT 8870 -M -M * -M -M * BUCK PASTURE 9700 -M -M * -M -M * EF BLACKS FORK GS 9360 -M -M * -M -M * HAMS FORK 7840 14.5 8.6 169 14.2 11.7 121 HEWINTA 9519 -M 9.7 * -M 14.5 * HICKERSON PARK 9145 6.5 6.6 98 9.4 10.7 88 HOLE-IN-ROCK 9150 -M 6.8 * -M 10.2 * INDIAN CREEK 9425 -M 23.9 * -M 23.1 * KELLEY R.S. 8180 18.7 13.7 136 21.2 18.5 115 SPIRIT LK 10235 -M -M * -M -M * STEEL CREEK PARK 10200 20.9 16.1 130 17.3 17.2 101 ----- ----- Basin Index (%) 135* 107* UPPER BEAR RIVER BEAR RIVER RS 8777 -M -M * -M -M * BUG LAKE 7950 -M 19.0 * -M 19.9 * BURTS MILLER RANCH 8000 -M -M * -M -M * CHALK CREEK #1 8993 -M 24.9 * -M 26.1 * HAYDEN FORK 9212 -M 13.9 * -M 21.8 * KELLEY R.S. 8180 18.7 13.7 136 21.2 18.5 115 LILY LAKE 9156 -M 12.4 * -M 17.8 * MONTE CRISTO 8960 -M 27.8 * -M 26.8 * SALT RIVER SUMMIT 7760 -M 11.2 * -M 17.0 * ----- ----- Basin Index (%) 136* 115* ----------------------------------------------------------------------------- -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.