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 22 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 19.0 11.5 165 27.3 21.9 125 BLACK BEAR 8170 43.4 36.9 118 41.8 40.2 104 BLIND BULL SUM 8650 37.3 24.2 154 23.7 20.4 116 COTTONWOOD CREEK 7670 26.1 18.1 144 35.2 26.0 135 EAST RIM DIVIDE 7930 13.3 9.4 141 16.1 12.3 131 GRAND TARGHEE 9260 52.7 42.5 124 -M 32.9 * GRANITE CREEK 6770 20.7 10.3 201 24.7 20.4 121 GRASSY LAKE 7265 39.7 30.8 129 41.5 37.7 110 GROS VENTRE SUMMIT 8750 14.6 13.0 112 15.1 13.8 109 GUNSIGHT PASS 9820 20.1 13.7 147 19.5 15.0 130 LEWIS LAKE DIVIDE 7850 41.0 30.6 134 41.8 37.1 113 PHILLIPS BENCH 8200 34.0 25.3 134 35.3 29.4 120 SALT RIVER SUMMIT 7760 14.1 9.2 153 19.5 17.5 111 SNAKE RIVER STATION 6920 16.0 11.1 144 27.0 23.7 114 SPRING CREEK DIVIDE 9000 37.3 23.6 158 33.5 25.0 134 THUMB DIVIDE 7980 20.2 14.4 140 20.3 19.8 103 TOGWOTEE PASS 9580 32.8 24.2 136 34.3 25.9 132 TWO OCEAN PLATEAU 9240 39.0 28.5 137 35.4 28.8 123 WILLOW CREEK 8380 40.4 26.6 152 42.4 35.6 119 YOUNTS PEAK 8350 -M 15.2 * -M 16.8 * ----- ----- Basin Index (%) 139 119 MADISON-GALLATIN BLACK BEAR 8170 43.4 36.9 118 41.8 40.2 104 CANYON 7870 15.1 12.1 125 17.8 17.2 103 MADISON PLATEAU 7750 25.0 22.9 109 26.2 27.7 95 WEST YELLOWSTONE 6700 7.8 6.5 120 17.0 15.2 112 WHISKEY CREEK 6800 17.1 15.4 111 22.3 21.4 104 ----- ----- Basin Index (%) 116 103 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 23.6 141 31.4 20.9 150 BURNT MTN 5880 8.2 .0 * 21.3 14.5 147 CANYON 7870 15.1 12.1 125 17.8 17.2 103 COLE CREEK 7850 24.8 16.4 151 18.3 14.8 124 EVENING STAR 9200 40.7 24.6 165 42.7 29.0 147 FISHER CREEK 9100 46.1 32.8 141 41.6 33.7 123 NORTHEAST ENTRANCE 7350 13.0 6.0 217 16.6 13.1 127 PARKER PEAK 9400 34.2 21.2 161 31.1 18.9 165 SYLVAN LAKE 8420 23.0 20.4 113 30.5 23.8 128 THUMB DIVIDE 7980 20.2 14.4 140 20.3 19.8 103 TWO OCEAN PLATEAU 9240 39.0 28.5 137 35.4 28.8 123 WHITE MILL 8700 33.9 23.7 143 30.5 25.1 122 WOLVERINE 7650 15.5 6.6 235 18.3 13.0 141 ----- ----- Basin Index (%) 151 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.2 * -M 16.9 * CASTLE CREEK 8400 8.0 -M * 13.0 -M * COLD SPRINGS 9630 8.4 4.1 205 13.8 11.1 124 DEER PARK 9700 16.9 16.3 104 20.4 21.8 94 HOBBS PARK 10100 15.6 15.1 103 15.0 15.1 99 KIRWIN 9550 18.1 10.0 181 19.3 12.7 152 LITTLE WARM 9370 14.0 10.0 140 17.8 14.0 127 OWL CREEK 8975 4.8 3.5 137 8.5 7.0 121 SOUTH PASS 9040 14.8 15.4 96 15.9 18.8 85 ST. LAWRENCE ALT 8620 .0 5.1 0 10.0 10.1 99 TOGWOTEE PASS 9580 32.8 24.2 136 34.3 25.9 132 TOWNSEND CREEK 8700 7.0 9.1 77 10.4 13.5 77 ----- ----- Basin Index (%) 117 110 BIGHORN BASIN BALD MTN. 9380 27.8 20.0 139 22.2 18.4 121 BEAR TRAP MEADOW 8200 9.7 2.7 359 12.6 9.6 131 BONE SPRINGS DIV 9350 23.8 16.2 147 18.9 17.0 111 GRAVE SPRINGS 8550 13.0 9.4 138 14.0 11.8 119 KIRWIN 9550 18.1 10.0 181 19.3 12.7 152 MARQUETTE 8760 15.1 -M * 14.3 -M * MIDDLE POWDER 7760 19.0 12.4 153 15.9 13.0 122 OWL CREEK 8975 4.8 3.5 137 8.5 7.0 121 POWDER RIVER PASS 9480 15.3 10.2 150 18.1 13.9 130 SHELL CREEK 9580 20.2 15.6 129 18.4 15.0 123 TIMBER CREEK 7950 5.3 4.4 120 10.4 8.6 121 ----- ----- Basin Index (%) 150 125 SHOSHONE RIVER BLACKWATER 9780 34.1 24.0 142 31.3 22.0 142 EVENING STAR 9200 40.7 24.6 165 42.7 29.0 147 MARQUETTE 8760 15.1 -M * 14.3 -M * SYLVAN ROAD 7120 9.9 9.2 108 22.9 17.8 129 YOUNTS PEAK 8350 -M 15.2 * -M 16.8 * ----- ----- Basin Index (%) 147 141 POWDER RIVER BEAR TRAP MEADOW 8200 9.7 2.7 359 12.6 9.6 131 CLOUD PEAK RESERVOIR 9860 22.6 16.0 141 20.8 15.2 137 GRAVE SPRINGS 8550 13.0 9.4 138 14.0 11.8 119 HANSEN SAWMILL 8360 9.7 4.5 216 13.9 9.8 142 MIDDLE POWDER 7760 19.0 12.4 153 15.9 13.0 122 POWDER RIVER PASS 9480 15.3 10.2 150 18.1 13.9 130 SOLDIER PARK 8720 13.2 -M * 13.5 -M * ----- ----- Basin Index (%) 162 130 TONGUE RIVER BIG GOOSE 7990 13.6 9.2 148 17.0 12.9 132 BONE SPRINGS DIV 9350 23.8 16.2 147 18.9 17.0 111 BURGESS JUNCTION 7880 17.6 12.7 139 17.9 13.6 132 DOME LAKE 8880 17.4 11.8 147 17.2 15.1 114 LITTLE GOOSE 8870 15.6 -M * 19.3 -M * SUCKER CREEK 8880 18.9 12.7 149 21.7 16.0 136 TIE CREEK 6870 8.2 4.1 200 16.9 13.1 129 ----- ----- Basin Index (%) 149 125 BELLE FOURCHE COLE CANYON 5910 6.1 1.6 381 14.7 10.6 139 ----- ----- Basin Index (%) 381 139 CHEYENNE RIVER BASIN BLIND PARK 6890 5.1 3.9 131 17.4 13.3 131 NORTH RAPID CREEK 6130 4.8 3.9 123 16.1 11.3 142 ----- ----- Basin Index (%) 127 136 UPPER N. PLATTE ARAPAHO RIDGE 10960 28.4 21.4 133 29.4 24.6 120 BLACKHALL MTN 9820 39.6 -M * -M -M * COLUMBINE 9160 33.5 20.6 163 -M 27.2 * DIVIDE PEAK 8880 18.1 18.4 98 24.7 23.0 107 JOE WRIGHT 10120 25.3 22.5 112 34.0 28.2 121 LAPRELE CREEK 8375 7.2 7.7 94 12.5 13.9 90 MED BOW 10500 -M -M * 42.3 -M * NORTH FRENCH CREEK 10130 38.1 32.1 119 36.9 28.9 128 NEVER SUMMER 10280 27.1 20.8 130 21.8 -M * OLD BATTLE 10000 36.1 33.2 109 39.1 37.4 105 RAWAH 9020 10.5 8.2 128 18.8 15.7 120 SAGE CREEK BASIN 7850 7.3 4.9 149 13.6 15.3 89 SAND LAKE 10050 35.7 30.6 117 34.8 27.2 128 SOUTH BRUSH CREEK 8440 8.3 9.7 86 16.4 16.7 98 TOWER 10500 54.1 48.5 112 -M 42.5 * WEBBER SPRINGS 9250 25.3 21.8 116 30.3 28.6 106 WILLOW CREEK PASS 9540 16.5 13.4 123 16.6 14.6 114 ZIRKEL 9340 40.2 22.6 178 -M 29.9 * ----- ----- Basin Index (%) 122 112 SWEETWATER DEER PARK 9700 16.9 16.3 104 20.4 21.8 94 LARSEN CREEK 9000 9.7 10.1 96 16.2 -M * SOUTH PASS 9040 14.8 15.4 96 15.9 18.8 85 ----- ----- Basin Index (%) 99 89 LOWER N. PLATTE CASPER MTN. 7900 18.0 14.3 126 17.3 16.8 103 LAPRELE CREEK 8375 7.2 7.7 94 12.5 13.9 90 RENO HILL 8400 18.8 14.0 134 22.6 17.4 130 WINDY PEAK 7900 7.7 6.4 120 13.4 11.8 114 ----- ----- Basin Index (%) 122 110 LARAMIE RIVER BROOKLYN LAKE 10240 31.8 22.4 142 32.1 23.1 139 CINNABAR PARK 9574 26.4 19.9 133 31.2 25.7 121 CROW CREEK 8330 3.6 .4 900* 12.9 12.1 107 DEADMAN HILL 10220 26.6 17.4 153 25.2 19.2 131 RAWAH 9020 10.5 8.2 128 18.8 15.7 120 ROACH 9700 21.6 16.6 130 26.3 20.9 126 ----- ----- Basin Index (%) 142 126 S. PLATTE BLACK MOUNTAIN 8920 11.4 -M * -M -M * CROW CREEK 8330 3.6 .4 900* 12.9 12.1 107 DEADMAN HILL 10220 26.6 17.4 153 25.2 19.2 131 ----- ----- Basin Index (%) 170* 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.5 3.5 129 18.8 16.2 116 DIVIDE PEAK 8880 18.1 18.4 98 24.7 23.0 107 ELK RIVER 8700 17.9 15.0 119 23.9 21.5 111 LITTLE SNAKE RIVER 8915 28.3 23.8 119 36.4 31.2 117 OLD BATTLE 10000 36.1 33.2 109 39.1 37.4 105 SAGE CREEK BASIN 7850 7.3 4.9 149 13.6 15.3 89 SANDSTONE RS 8150 7.7 9.8 79 19.2 19.7 97 WHISKEY PARK 8950 40.1 25.7 156 41.9 29.9 140 ----- ----- Basin Index (%) 119 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.3 12.4 123 15.3 14.2 108 BLIND BULL SUM 8650 37.3 24.2 154 23.7 20.4 116 EAST RIM DIVIDE 7930 13.3 9.4 141 16.1 12.3 131 ELKHART PARK G.S. 9400 18.2 11.9 153 17.3 14.2 122 GROS VENTRE SUMMIT 8750 14.6 13.0 112 15.1 13.8 109 GUNSIGHT PASS 9820 20.1 13.7 147 19.5 15.0 130 KENDALL R.S. 7740 18.9 7.7 245 23.3 14.8 157 LOOMIS PARK 8240 23.4 12.5 187 25.4 18.1 140 NEW FORK LAKE 8340 12.9 8.3 155 13.7 11.4 120 POCKET CREEK 9360 12.1 -M * 12.9 -M * SNIDER BASIN 8060 16.0 10.5 152 19.9 14.9 134 SPRING CREEK DIVIDE 9000 37.3 23.6 158 33.5 25.0 134 TRIPLE PEAK 8500 34.1 19.2 178 37.8 26.6 142 ----- ----- Basin Index (%) 157 130 LOWER GREEN RIVER BLACKS FORK JCT 8870 4.8 -M * 14.1 -M * BUCK PASTURE 9700 12.0 -M * 17.9 -M * EF BLACKS FORK GS 9360 7.3 -M * 10.6 -M * HAMS FORK 7840 10.7 6.0 178 14.7 12.2 120 HEWINTA 9519 6.8 7.6 89 15.1 15.2 99 HICKERSON PARK 9145 2.0 5.2 38 9.3 11.2 83 HOLE-IN-ROCK 9150 2.9 5.6 52 10.4 10.7 97 INDIAN CREEK 9425 31.3 23.5 133 27.5 23.8 116 KELLEY R.S. 8180 16.3 12.2 134 21.2 19.1 111 SPIRIT LK 10235 8.9 -M * 14.8 -M * STEEL CREEK PARK 10200 21.0 16.3 129 17.3 18.0 96 ----- ----- Basin Index (%) 119 105 UPPER BEAR RIVER BEAR RIVER RS 8777 2.2 -M * 13.2 -M * BUG LAKE 7950 20.4 16.6 123 21.2 20.6 103 BURTS MILLER RANCH 8000 .2 -M * 7.3 -M * CHALK CREEK #1 8993 20.6 24.5 84 24.2 27.1 89 HAYDEN FORK 9212 9.6 11.2 86 22.3 22.6 99 KELLEY R.S. 8180 16.3 12.2 134 21.2 19.1 111 LILY LAKE 9156 10.4 10.2 102 15.9 18.5 86 MONTE CRISTO 8960 22.8 27.3 84 26.4 27.7 95 SALT RIVER SUMMIT 7760 14.1 9.2 153 19.5 17.5 111 ----- ----- Basin Index (%) 103 98 ----------------------------------------------------------------------------- -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.