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 SUNDAY: APRIL 20 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 20.8 11.9 175 27.3 21.7 126 BLACK BEAR 8170 43.4 36.9 118 41.8 39.8 105 BLIND BULL SUM 8650 37.6 24.0 157 23.7 20.2 117 COTTONWOOD CREEK 7670 28.8 18.6 155 35.2 25.8 136 EAST RIM DIVIDE 7930 15.3 9.5 161 16.0 12.2 131 GRAND TARGHEE 9260 52.1 42.0 124 -M 32.6 * GRANITE CREEK 6770 21.7 10.8 201 24.7 20.3 122 GRASSY LAKE 7265 41.4 31.3 132 41.6 37.3 112 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.1 13.7 110 GUNSIGHT PASS 9820 21.3 13.6 157 19.5 14.9 131 LEWIS LAKE DIVIDE 7850 41.5 30.4 137 41.8 36.8 114 PHILLIPS BENCH 8200 34.3 25.6 134 35.3 29.2 121 SALT RIVER SUMMIT 7760 15.5 9.7 160 19.5 17.4 112 SNAKE RIVER STATION 6920 18.3 11.3 162 27.0 23.5 115 SPRING CREEK DIVIDE 9000 36.9 23.5 157 33.5 24.7 136 THUMB DIVIDE 7980 21.1 14.5 146 20.3 19.6 104 TOGWOTEE PASS 9580 33.6 23.8 141 34.2 25.7 133 TWO OCEAN PLATEAU 9240 41.1 28.1 146 35.1 28.5 123 WILLOW CREEK 8380 41.5 26.8 155 42.4 35.3 120 YOUNTS PEAK 8350 -M 15.1 * -M 16.6 * ----- ----- Basin Index (%) 143 120 MADISON-GALLATIN BLACK BEAR 8170 43.4 36.9 118 41.8 39.8 105 CANYON 7870 15.8 12.2 130 17.8 17.0 105 MADISON PLATEAU 7750 25.6 22.9 112 26.3 27.5 96 WEST YELLOWSTONE 6700 9.9 7.4 134 17.0 15.1 113 WHISKEY CREEK 6800 17.6 15.3 115 22.3 21.2 105 ----- ----- Basin Index (%) 119 104 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 23.4 142 31.3 20.8 150 BURNT MTN 5880 9.3 .0 * 21.3 14.2 150 CANYON 7870 15.8 12.2 130 17.8 17.0 105 COLE CREEK 7850 25.1 16.3 154 18.3 14.5 126 EVENING STAR 9200 40.9 24.8 165 42.2 28.7 147 FISHER CREEK 9100 45.5 32.4 140 41.4 33.3 124 NORTHEAST ENTRANCE 7350 14.4 6.7 215 16.6 13.0 128 PARKER PEAK 9400 34.7 20.9 166 30.8 18.7 165 SYLVAN LAKE 8420 24.3 20.4 119 30.5 23.6 129 THUMB DIVIDE 7980 21.1 14.5 146 20.3 19.6 104 TWO OCEAN PLATEAU 9240 41.1 28.1 146 35.1 28.5 123 WHITE MILL 8700 34.5 23.7 146 30.5 24.9 122 WOLVERINE 7650 15.5 7.2 215 18.2 12.8 142 ----- ----- Basin Index (%) 154 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.1 * -M 16.8 * CASTLE CREEK 8400 9.0 -M * 13.0 -M * COLD SPRINGS 9630 8.8 4.6 191 13.6 10.9 125 DEER PARK 9700 -M 16.3 * 20.3 21.5 94 HOBBS PARK 10100 16.5 14.8 111 14.9 14.8 101 KIRWIN 9550 20.1 10.0 201 19.2 12.4 155 LITTLE WARM 9370 14.6 10.1 145 17.8 13.9 128 OWL CREEK 8975 6.5 4.0 162 8.5 6.9 123 SOUTH PASS 9040 15.4 15.5 99 15.9 18.6 85 ST. LAWRENCE ALT 8620 1.9 5.3 36 9.2 9.9 93 TOGWOTEE PASS 9580 33.6 23.8 141 34.2 25.7 133 TOWNSEND CREEK 8700 7.7 9.4 82 10.3 13.3 77 ----- ----- Basin Index (%) 128 111 BIGHORN BASIN BALD MTN. 9380 28.2 19.8 142 22.2 18.2 122 BEAR TRAP MEADOW 8200 10.7 3.2 334 12.5 9.4 133 BONE SPRINGS DIV 9350 24.0 16.1 149 18.9 16.7 113 GRAVE SPRINGS 8550 13.5 9.6 141 14.0 11.7 120 KIRWIN 9550 20.1 10.0 201 19.2 12.4 155 MARQUETTE 8760 15.4 -M * 14.4 -M * MIDDLE POWDER 7760 19.4 12.5 155 15.9 12.8 124 OWL CREEK 8975 6.5 4.0 162 8.5 6.9 123 POWDER RIVER PASS 9480 16.2 10.2 159 18.0 13.7 131 SHELL CREEK 9580 21.2 15.4 138 18.3 14.8 124 TIMBER CREEK 7950 6.4 4.8 133 10.4 8.4 124 ----- ----- Basin Index (%) 157 126 SHOSHONE RIVER BLACKWATER 9780 34.4 23.8 145 31.3 21.8 144 EVENING STAR 9200 40.9 24.8 165 42.2 28.7 147 MARQUETTE 8760 15.4 -M * 14.4 -M * SYLVAN ROAD 7120 12.3 9.8 126 22.9 17.6 130 YOUNTS PEAK 8350 -M 15.1 * -M 16.6 * ----- ----- Basin Index (%) 150 142 POWDER RIVER BEAR TRAP MEADOW 8200 10.7 3.2 334 12.5 9.4 133 CLOUD PEAK RESERVOIR 9860 22.8 15.8 144 20.8 14.9 140 GRAVE SPRINGS 8550 13.5 9.6 141 14.0 11.7 120 HANSEN SAWMILL 8360 10.4 4.8 217 13.9 9.6 145 MIDDLE POWDER 7760 19.4 12.5 155 15.9 12.8 124 POWDER RIVER PASS 9480 16.2 10.2 159 18.0 13.7 131 SOLDIER PARK 8720 14.0 -M * 13.5 -M * ----- ----- Basin Index (%) 166 132 TONGUE RIVER BIG GOOSE 7990 13.9 9.3 149 17.0 12.6 135 BONE SPRINGS DIV 9350 24.0 16.1 149 18.9 16.7 113 BURGESS JUNCTION 7880 17.9 12.5 143 17.9 13.4 134 DOME LAKE 8880 17.7 11.8 150 17.2 14.9 115 LITTLE GOOSE 8870 15.9 -M * 19.3 -M * SUCKER CREEK 8880 19.2 12.7 151 21.7 15.8 137 TIE CREEK 6870 9.1 4.4 207 16.9 12.8 132 ----- ----- Basin Index (%) 152 127 BELLE FOURCHE COLE CANYON 5910 6.8 2.0 340 14.7 10.4 141 ----- ----- Basin Index (%) 340 141 CHEYENNE RIVER BASIN BLIND PARK 6890 6.5 4.1 159 17.3 13.1 132 NORTH RAPID CREEK 6130 6.1 4.2 145 16.1 11.0 146 ----- ----- Basin Index (%) 152 139 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.4 21.4 137 29.4 24.3 121 BLACKHALL MTN 9820 39.4 -M * -M -M * COLUMBINE 9160 35.6 20.6 173 -M 26.9 * DIVIDE PEAK 8880 19.5 18.9 103 24.8 22.8 109 JOE WRIGHT 10120 25.5 22.2 115 34.0 27.8 122 LAPRELE CREEK 8375 8.5 8.0 106 12.5 13.7 91 MED BOW 10500 -M -M * 41.6 -M * NORTH FRENCH CREEK 10130 38.6 32.0 121 36.9 28.6 129 NEVER SUMMER 10280 27.1 20.7 131 21.6 -M * OLD BATTLE 10000 35.9 32.7 110 39.1 37.0 106 RAWAH 9020 11.7 8.4 139 18.8 15.5 121 SAGE CREEK BASIN 7850 9.2 6.0 153 13.6 15.3 89 SAND LAKE 10050 36.0 30.5 118 34.8 26.8 130 SOUTH BRUSH CREEK 8440 9.5 9.8 97 16.3 16.5 99 TOWER 10500 54.1 48.0 113 -M 42.0 * WEBBER SPRINGS 9250 26.4 22.0 120 30.3 28.4 107 WILLOW CREEK PASS 9540 16.8 13.1 128 16.6 14.4 115 ZIRKEL 9340 41.4 22.7 182 -M 29.7 * ----- ----- Basin Index (%) 126 113 SWEETWATER DEER PARK 9700 -M 16.3 * 20.3 21.5 94 LARSEN CREEK 9000 11.2 10.3 109 16.3 -M * SOUTH PASS 9040 15.4 15.5 99 15.9 18.6 85 ----- ----- Basin Index (%) 103 90 LOWER N. PLATTE CASPER MTN. 7900 18.8 14.4 131 17.4 16.6 105 LAPRELE CREEK 8375 8.5 8.0 106 12.5 13.7 91 RENO HILL 8400 19.6 13.9 141 22.6 17.2 131 WINDY PEAK 7900 8.5 6.6 129 13.4 11.6 116 ----- ----- Basin Index (%) 129 112 LARAMIE RIVER BROOKLYN LAKE 10240 32.3 22.2 145 32.0 22.8 140 CINNABAR PARK 9574 26.7 20.1 133 31.2 25.3 123 CROW CREEK 8330 5.5 .7 786* 13.0 12.0 108 DEADMAN HILL 10220 26.0 17.0 153 25.2 18.9 133 RAWAH 9020 11.7 8.4 139 18.8 15.5 121 ROACH 9700 22.5 16.6 136 26.2 20.6 127 ----- ----- Basin Index (%) 147 127 S. PLATTE BLACK MOUNTAIN 8920 12.6 -M * -M -M * CROW CREEK 8330 5.5 .7 786* 13.0 12.0 108 DEADMAN HILL 10220 26.0 17.0 153 25.2 18.9 133 ----- ----- Basin Index (%) 178* 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.2 4.3 144 18.8 16.1 117 DIVIDE PEAK 8880 19.5 18.9 103 24.8 22.8 109 ELK RIVER 8700 19.5 15.5 126 23.9 21.2 113 LITTLE SNAKE RIVER 8915 29.9 24.3 123 36.4 31.2 117 OLD BATTLE 10000 35.9 32.7 110 39.1 37.0 106 SAGE CREEK BASIN 7850 9.2 6.0 153 13.6 15.3 89 SANDSTONE RS 8150 9.2 10.1 91 19.2 19.5 98 WHISKEY PARK 8950 40.6 25.9 157 41.9 29.6 142 ----- ----- Basin Index (%) 123 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.4 12.7 121 15.3 14.1 109 BLIND BULL SUM 8650 37.6 24.0 157 23.7 20.2 117 EAST RIM DIVIDE 7930 15.3 9.5 161 16.0 12.2 131 ELKHART PARK G.S. 9400 18.2 11.9 153 17.4 14.0 124 GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.1 13.7 110 GUNSIGHT PASS 9820 21.3 13.6 157 19.5 14.9 131 KENDALL R.S. 7740 20.2 8.4 240 23.3 14.8 157 LOOMIS PARK 8240 24.6 13.0 189 25.3 18.0 141 NEW FORK LAKE 8340 14.3 8.8 162 13.6 11.3 120 POCKET CREEK 9360 12.1 -M * 12.9 -M * SNIDER BASIN 8060 16.6 10.7 155 19.9 14.8 134 SPRING CREEK DIVIDE 9000 36.9 23.5 157 33.5 24.7 136 TRIPLE PEAK 8500 35.4 19.3 183 37.8 26.3 144 ----- ----- Basin Index (%) 160 131 LOWER GREEN RIVER BLACKS FORK JCT 8870 6.0 -M * 14.1 -M * BUCK PASTURE 9700 13.5 -M * 17.9 -M * EF BLACKS FORK GS 9360 8.3 -M * 10.7 -M * HAMS FORK 7840 12.3 6.7 184 14.5 12.0 121 HEWINTA 9519 8.2 8.1 101 15.1 15.0 101 HICKERSON PARK 9145 3.6 5.4 67 9.3 11.0 85 HOLE-IN-ROCK 9150 3.9 5.9 66 10.4 10.5 99 INDIAN CREEK 9425 32.7 23.3 140 27.5 23.6 117 KELLEY R.S. 8180 17.4 12.7 137 21.2 18.9 112 SPIRIT LK 10235 9.6 -M * 14.8 -M * STEEL CREEK PARK 10200 21.0 16.2 130 17.3 17.8 97 ----- ----- Basin Index (%) 127 106 UPPER BEAR RIVER BEAR RIVER RS 8777 4.0 -M * 13.3 -M * BUG LAKE 7950 21.8 17.2 127 21.2 20.4 104 BURTS MILLER RANCH 8000 .2 -M * 7.2 -M * CHALK CREEK #1 8993 22.1 24.6 90 24.3 26.7 91 HAYDEN FORK 9212 11.7 11.8 99 22.3 22.4 100 KELLEY R.S. 8180 17.4 12.7 137 21.2 18.9 112 LILY LAKE 9156 11.5 10.6 108 15.9 18.3 87 MONTE CRISTO 8960 24.7 27.5 90 26.4 27.3 97 SALT RIVER SUMMIT 7760 15.5 9.7 160 19.5 17.4 112 ----- ----- Basin Index (%) 109 100 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.