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 MONDAY: APRIL 14 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 22.7 13.5 168 27.0 21.2 127 BLACK BEAR 8170 -M 36.5 * -M 38.8 * BLIND BULL SUM 8650 36.4 23.8 153 23.5 19.7 119 COTTONWOOD CREEK 7670 30.7 20.1 153 34.9 25.1 139 EAST RIM DIVIDE 7930 -M 10.0 * -M 11.9 * GRAND TARGHEE 9260 51.2 40.7 126 -M 31.7 * GRANITE CREEK 6770 23.0 12.7 181 24.3 19.8 123 GRASSY LAKE 7265 -M 31.4 * -M 36.4 * GROS VENTRE SUMMIT 8750 -M 12.9 * -M 13.2 * GUNSIGHT PASS 9820 21.4 13.5 159 18.9 14.2 133 LEWIS LAKE DIVIDE 7850 -M 30.2 * -M 35.9 * PHILLIPS BENCH 8200 34.8 26.0 134 34.7 28.5 122 SALT RIVER SUMMIT 7760 -M 11.5 * -M 17.0 * SNAKE RIVER STATION 6920 -M 13.2 * -M 22.8 * SPRING CREEK DIVIDE 9000 36.2 23.1 157 33.2 24.2 137 THUMB DIVIDE 7980 20.3 14.5 140 19.4 18.9 103 TOGWOTEE PASS 9580 31.9 22.9 139 33.5 24.8 135 TWO OCEAN PLATEAU 9240 40.8 27.0 151 -M 27.7 * WILLOW CREEK 8380 39.9 26.9 148 42.1 34.3 123 YOUNTS PEAK 8350 -M 14.7 * -M 16.1 * ----- ----- Basin Index (%) 147 126 MADISON-GALLATIN BLACK BEAR 8170 -M 36.5 * -M 38.8 * CANYON 7870 15.8 12.3 128 17.0 16.5 103 MADISON PLATEAU 7750 -M 22.4 * -M 26.7 * WEST YELLOWSTONE 6700 -M 8.4 * -M 14.3 * WHISKEY CREEK 6800 -M 14.7 * -M 20.6 * ----- ----- Basin Index (%) 128* 103* YELLOWSTONE BEARTOOTH LAKE 9360 32.2 22.2 145 30.4 20.2 150 BURNT MTN 5880 10.8 1.0 1080 21.1 13.4 157 CANYON 7870 15.8 12.3 128 17.0 16.5 103 COLE CREEK 7850 25.1 15.5 162 18.3 13.8 133 EVENING STAR 9200 39.8 24.6 162 41.8 27.9 150 FISHER CREEK 9100 44.3 31.8 139 40.3 32.4 124 NORTHEAST ENTRANCE 7350 14.8 8.2 180 15.8 12.6 125 PARKER PEAK 9400 33.1 20.4 162 30.0 18.1 166 SYLVAN LAKE 8420 -M 19.9 * -M 22.8 * THUMB DIVIDE 7980 20.3 14.5 140 19.4 18.9 103 TWO OCEAN PLATEAU 9240 40.8 27.0 151 -M 27.7 * WHITE MILL 8700 -M 23.4 * -M 24.2 * WOLVERINE 7650 -M 8.9 * 17.3 12.5 138 ----- ----- Basin Index (%) 156 135 WIND RIVER BURROUGHS CREEK 8750 -M 12.9 * -M 16.2 * CASTLE CREEK 8400 9.5 -M * 12.8 -M * COLD SPRINGS 9630 9.8 5.9 166 13.7 10.3 133 DEER PARK 9700 16.9 16.1 105 19.9 20.6 97 HOBBS PARK 10100 15.8 14.9 106 14.2 14.1 101 KIRWIN 9550 19.8 9.9 200 18.5 11.9 155 LITTLE WARM 9370 14.6 10.3 142 17.3 13.3 130 OWL CREEK 8975 7.7 5.3 145 8.2 6.3 130 SOUTH PASS 9040 15.6 15.8 99 15.5 18.0 86 ST. LAWRENCE ALT 8620 3.7 6.6 56 8.8 9.4 94 TOGWOTEE PASS 9580 31.9 22.9 139 33.5 24.8 135 TOWNSEND CREEK 8700 7.9 10.0 79 9.7 12.7 76 ----- ----- Basin Index (%) 122 113 BIGHORN BASIN BALD MTN. 9380 27.4 19.4 141 21.5 17.6 122 BEAR TRAP MEADOW 8200 11.0 4.5 244 12.2 9.0 136 BONE SPRINGS DIV 9350 23.4 16.9 138 18.3 16.1 114 GRAVE SPRINGS 8550 13.0 9.6 135 13.4 11.1 121 KIRWIN 9550 19.8 9.9 200 18.5 11.9 155 MARQUETTE 8760 15.4 -M * 13.9 -M * MIDDLE POWDER 7760 18.5 12.4 149 15.0 12.3 122 OWL CREEK 8975 7.7 5.3 145 8.2 6.3 130 POWDER RIVER PASS 9480 16.2 10.2 159 17.6 13.1 134 SHELL CREEK 9580 20.8 15.6 133 17.9 14.3 125 TIMBER CREEK 7950 7.1 5.2 137 10.2 7.8 131 ----- ----- Basin Index (%) 151 128 SHOSHONE RIVER BLACKWATER 9780 33.5 23.6 142 30.5 21.2 144 EVENING STAR 9200 39.8 24.6 162 41.8 27.9 150 MARQUETTE 8760 15.4 -M * 13.9 -M * SYLVAN ROAD 7120 -M 10.3 * 22.4 17.0 132 YOUNTS PEAK 8350 -M 14.7 * -M 16.1 * ----- ----- Basin Index (%) 152* 143 POWDER RIVER BEAR TRAP MEADOW 8200 11.0 4.5 244 12.2 9.0 136 CLOUD PEAK RESERVOIR 9860 22.2 15.4 144 19.9 14.0 142 GRAVE SPRINGS 8550 13.0 9.6 135 13.4 11.1 121 HANSEN SAWMILL 8360 10.6 6.0 177 13.3 9.0 148 MIDDLE POWDER 7760 18.5 12.4 149 15.0 12.3 122 POWDER RIVER PASS 9480 16.2 10.2 159 17.6 13.1 134 SOLDIER PARK 8720 14.1 -M * 13.1 -M * ----- ----- Basin Index (%) 157 133 TONGUE RIVER BIG GOOSE 7990 13.3 9.8 136 16.1 12.0 134 BONE SPRINGS DIV 9350 23.4 16.9 138 18.3 16.1 114 BURGESS JUNCTION 7880 17.3 12.2 142 17.3 12.9 134 DOME LAKE 8880 17.3 12.0 144 16.5 14.3 115 LITTLE GOOSE 8870 -M -M * -M -M * SUCKER CREEK 8880 19.2 12.6 152 20.9 15.0 139 TIE CREEK 6870 9.4 5.0 188 16.2 12.2 133 ----- ----- Basin Index (%) 146 128 BELLE FOURCHE COLE CANYON 5910 7.4 3.5 211 14.5 9.9 146 ----- ----- Basin Index (%) 211 146 CHEYENNE RIVER BASIN BLIND PARK 6890 8.0 5.5 145 17.0 12.4 137 NORTH RAPID CREEK 6130 7.5 5.7 132 15.3 10.4 147 ----- ----- Basin Index (%) 138 142 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.8 21.6 138 29.0 23.7 122 BLACKHALL MTN 9820 39.3 -M * -M -M * COLUMBINE 9160 36.4 22.2 164 -M 26.2 * DIVIDE PEAK 8880 20.9 20.2 103 24.6 22.2 111 JOE WRIGHT 10120 25.7 22.0 117 33.9 26.8 126 LAPRELE CREEK 8375 9.1 9.2 99 12.2 13.1 93 MED BOW 10500 -M -M * 37.3 -M * NORTH FRENCH CREEK 10130 38.5 31.5 122 36.3 27.6 132 NEVER SUMMER 10280 26.8 20.6 130 21.2 -M * OLD BATTLE 10000 35.7 32.2 111 38.7 36.0 108 RAWAH 9020 13.3 9.8 136 18.5 15.0 123 SAGE CREEK BASIN 7850 11.4 9.4 121 13.6 15.0 91 SAND LAKE 10050 35.4 30.2 117 34.0 25.8 132 SOUTH BRUSH CREEK 8440 12.0 11.2 107 16.1 15.9 101 TOWER 10500 -M 47.4 * -M 41.0 * WEBBER SPRINGS 9250 27.1 23.5 115 30.2 27.6 109 WILLOW CREEK PASS 9540 16.8 12.6 133 16.2 14.0 116 ZIRKEL 9340 -M 24.3 * -M 29.2 * ----- ----- Basin Index (%) 123 115 SWEETWATER DEER PARK 9700 16.9 16.1 105 19.9 20.6 97 LARSEN CREEK 9000 -M 10.9 * -M -M * SOUTH PASS 9040 15.6 15.8 99 15.5 18.0 86 ----- ----- Basin Index (%) 102 92 LOWER N. PLATTE CASPER MTN. 7900 19.2 14.5 132 16.6 15.9 104 LAPRELE CREEK 8375 9.1 9.2 99 12.2 13.1 93 RENO HILL 8400 20.0 14.2 141 21.5 16.4 131 WINDY PEAK 7900 9.2 7.5 123 13.3 11.1 120 ----- ----- Basin Index (%) 127 113 LARAMIE RIVER BROOKLYN LAKE 10240 32.3 22.3 145 31.6 21.9 144 CINNABAR PARK 9574 26.0 21.2 123 31.0 24.8 125 CROW CREEK 8330 6.5 4.8 135 12.5 11.4 110 DEADMAN HILL 10220 26.0 16.6 157 25.0 18.1 138 RAWAH 9020 13.3 9.8 136 18.5 15.0 123 ROACH 9700 22.7 16.5 138 25.9 19.9 130 ----- ----- Basin Index (%) 139 130 S. PLATTE BLACK MOUNTAIN 8920 12.6 -M * -M -M * CROW CREEK 8330 6.5 4.8 135 12.5 11.4 110 DEADMAN HILL 10220 26.0 16.6 157 25.0 18.1 138 ----- ----- Basin Index (%) 152 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.4 7.2 131 18.7 15.5 121 DIVIDE PEAK 8880 20.9 20.2 103 24.6 22.2 111 ELK RIVER 8700 21.4 17.5 122 23.9 20.7 115 LITTLE SNAKE RIVER 8915 31.8 25.9 123 36.5 30.7 119 OLD BATTLE 10000 35.7 32.2 111 38.7 36.0 108 SAGE CREEK BASIN 7850 11.4 9.4 121 13.6 15.0 91 SANDSTONE RS 8150 11.6 12.1 96 19.1 18.9 101 WHISKEY PARK 8950 41.3 27.2 152 42.1 28.7 147 ----- ----- Basin Index (%) 121 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.1 12.9 117 15.1 13.6 111 BLIND BULL SUM 8650 36.4 23.8 153 23.5 19.7 119 EAST RIM DIVIDE 7930 -M 10.0 * -M 11.9 * ELKHART PARK G.S. 9400 18.0 12.1 149 17.0 13.6 125 GROS VENTRE SUMMIT 8750 -M 12.9 * -M 13.2 * GUNSIGHT PASS 9820 21.4 13.5 159 18.9 14.2 133 KENDALL R.S. 7740 21.1 10.1 209 23.1 14.4 160 LOOMIS PARK 8240 24.5 13.7 179 24.9 17.5 142 NEW FORK LAKE 8340 15.4 9.7 159 13.5 10.9 124 POCKET CREEK 9360 12.1 -M * 12.6 -M * SNIDER BASIN 8060 -M 11.8 * -M 14.4 * SPRING CREEK DIVIDE 9000 36.2 23.1 157 33.2 24.2 137 TRIPLE PEAK 8500 33.8 20.0 169 37.5 25.6 146 ----- ----- Basin Index (%) 160 134 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 14.3 8.9 161 14.1 11.6 122 HEWINTA 9519 -M 10.0 * -M 14.5 * HICKERSON PARK 9145 6.3 6.9 91 9.3 10.6 88 HOLE-IN-ROCK 9150 -M 7.0 * -M 10.1 * INDIAN CREEK 9425 32.5 24.1 135 27.2 23.0 118 KELLEY R.S. 8180 18.7 13.9 135 21.3 18.4 116 SPIRIT LK 10235 -M -M * -M -M * STEEL CREEK PARK 10200 -M 16.1 * -M 17.2 * ----- ----- Basin Index (%) 133* 113* UPPER BEAR RIVER BEAR RIVER RS 8777 -M -M * -M -M * BUG LAKE 7950 -M 19.2 * -M 19.9 * BURTS MILLER RANCH 8000 -M -M * -M -M * CHALK CREEK #1 8993 -M 24.8 * -M 26.0 * HAYDEN FORK 9212 -M 14.2 * -M 21.7 * KELLEY R.S. 8180 18.7 13.9 135 21.3 18.4 116 LILY LAKE 9156 13.8 12.6 110 16.1 17.7 91 MONTE CRISTO 8960 27.0 27.8 97 26.3 26.7 99 SALT RIVER SUMMIT 7760 -M 11.5 * -M 17.0 * ----- ----- Basin Index (%) 110* 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.