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 25 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 18.4 10.8 170 27.4 22.1 124 BLACK BEAR 8170 43.9 36.9 119 43.9 40.7 108 BLIND BULL SUM 8650 36.8 24.3 151 24.0 20.7 116 COTTONWOOD CREEK 7670 26.5 17.3 153 35.8 26.5 135 EAST RIM DIVIDE 7930 12.2 9.0 136 16.0 12.4 129 GRAND TARGHEE 9260 53.4 43.1 124 -M 33.5 * GRANITE CREEK 6770 19.8 9.5 208 24.8 20.6 120 GRASSY LAKE 7265 38.4 30.2 127 42.6 38.2 112 GROS VENTRE SUMMIT 8750 14.5 12.5 116 15.0 14.0 107 GUNSIGHT PASS 9820 19.5 13.5 144 19.6 15.4 127 LEWIS LAKE DIVIDE 7850 41.5 30.7 135 42.8 37.5 114 PHILLIPS BENCH 8200 34.0 25.4 134 35.8 29.8 120 SALT RIVER SUMMIT 7760 13.6 8.5 160 19.8 17.8 111 SNAKE RIVER STATION 6920 15.2 10.1 150 27.6 24.0 115 SPRING CREEK DIVIDE 9000 -M 23.7 * -M 25.4 * THUMB DIVIDE 7980 20.1 14.2 142 21.0 20.2 104 TOGWOTEE PASS 9580 32.6 24.4 134 34.5 26.3 131 TWO OCEAN PLATEAU 9240 37.6 29.0 130 36.2 29.2 124 WILLOW CREEK 8380 39.2 25.7 153 43.2 36.3 119 YOUNTS PEAK 8350 -M 15.1 * -M 17.0 * ----- ----- Basin Index (%) 138 118 MADISON-GALLATIN BLACK BEAR 8170 43.9 36.9 119 43.9 40.7 108 CANYON 7870 14.8 11.7 126 18.1 17.4 104 MADISON PLATEAU 7750 26.0 22.6 115 27.6 28.0 99 WEST YELLOWSTONE 6700 7.1 5.1 139 17.8 15.4 116 WHISKEY CREEK 6800 17.3 15.5 112 23.3 21.7 107 ----- ----- Basin Index (%) 119 106 YELLOWSTONE BEARTOOTH LAKE 9360 33.4 23.6 142 31.8 21.2 150 BURNT MTN 5880 6.2 .0 * 21.4 14.9 144 CANYON 7870 14.8 11.7 126 18.1 17.4 104 COLE CREEK 7850 24.4 16.3 150 18.2 15.2 120 EVENING STAR 9200 41.1 24.5 168 43.5 29.4 148 FISHER CREEK 9100 46.6 33.2 140 42.3 34.1 124 NORTHEAST ENTRANCE 7350 11.9 5.1 233 17.1 13.3 129 PARKER PEAK 9400 35.5 21.8 163 32.0 19.3 166 SYLVAN LAKE 8420 23.9 20.3 118 31.7 24.2 131 THUMB DIVIDE 7980 20.1 14.2 142 21.0 20.2 104 TWO OCEAN PLATEAU 9240 37.6 29.0 130 36.2 29.2 124 WHITE MILL 8700 34.4 23.8 145 31.2 25.4 123 WOLVERINE 7650 14.7 5.6 262 18.6 13.2 141 ----- ----- Basin Index (%) 150 131 WIND RIVER BURROUGHS CREEK 8750 -M 13.1 * -M 17.2 * CASTLE CREEK 8400 7.2 -M * 13.1 -M * COLD SPRINGS 9630 7.4 3.1 239 13.9 11.6 120 DEER PARK 9700 17.3 16.3 106 20.7 22.7 91 HOBBS PARK 10100 15.7 15.6 101 15.4 15.7 98 KIRWIN 9550 18.1 10.1 179 19.4 13.0 149 LITTLE WARM 9370 13.4 9.5 141 17.9 14.5 123 OWL CREEK 8975 3.1 2.7 115 8.5 7.3 116 SOUTH PASS 9040 15.0 15.2 99 16.2 19.4 84 ST. LAWRENCE ALT 8620 .0 4.9 0 10.1 10.6 95 TOGWOTEE PASS 9580 32.6 24.4 134 34.5 26.3 131 TOWNSEND CREEK 8700 5.9 8.8 67 10.6 14.1 75 ----- ----- Basin Index (%) 116 108 BIGHORN BASIN BALD MTN. 9380 28.4 20.4 139 22.4 18.7 120 BEAR TRAP MEADOW 8200 8.8 2.0 440 12.6 9.9 127 BONE SPRINGS DIV 9350 24.5 16.4 149 19.5 17.3 113 GRAVE SPRINGS 8550 12.4 9.2 135 14.0 12.2 115 KIRWIN 9550 18.1 10.1 179 19.4 13.0 149 MARQUETTE 8760 14.3 -M * 14.3 -M * MIDDLE POWDER 7760 18.3 12.3 149 15.8 13.3 119 OWL CREEK 8975 3.1 2.7 115 8.5 7.3 116 POWDER RIVER PASS 9480 15.5 10.2 152 18.2 14.2 128 SHELL CREEK 9580 21.3 15.8 135 18.6 15.3 122 TIMBER CREEK 7950 3.4 3.7 92 10.4 9.0 116 ----- ----- Basin Index (%) 150 122 SHOSHONE RIVER BLACKWATER 9780 34.8 24.4 143 32.3 22.5 144 EVENING STAR 9200 41.1 24.5 168 43.5 29.4 148 MARQUETTE 8760 14.3 -M * 14.3 -M * SYLVAN ROAD 7120 9.2 8.3 111 23.8 17.9 133 YOUNTS PEAK 8350 -M 15.1 * -M 17.0 * ----- ----- Basin Index (%) 149 143 POWDER RIVER BEAR TRAP MEADOW 8200 8.8 2.0 440 12.6 9.9 127 CLOUD PEAK RESERVOIR 9860 22.4 16.3 137 20.8 15.6 133 GRAVE SPRINGS 8550 12.4 9.2 135 14.0 12.2 115 HANSEN SAWMILL 8360 8.6 4.3 200 14.1 10.1 140 MIDDLE POWDER 7760 18.3 12.3 149 15.8 13.3 119 POWDER RIVER PASS 9480 15.5 10.2 152 18.2 14.2 128 SOLDIER PARK 8720 12.0 -M * 13.5 -M * ----- ----- Basin Index (%) 158 127 TONGUE RIVER BIG GOOSE 7990 12.7 9.1 140 17.1 13.4 128 BONE SPRINGS DIV 9350 24.5 16.4 149 19.5 17.3 113 BURGESS JUNCTION 7880 17.6 12.4 142 18.1 13.9 130 DOME LAKE 8880 17.0 11.8 144 17.4 15.4 113 LITTLE GOOSE 8870 14.7 -M * 19.3 -M * SUCKER CREEK 8880 18.4 12.7 145 21.8 16.4 133 TIE CREEK 6870 7.2 3.5 206 17.0 13.6 125 ----- ----- Basin Index (%) 148 123 BELLE FOURCHE COLE CANYON 5910 4.4 .8 550 14.8 10.9 136 ----- ----- Basin Index (%) 550 136 CHEYENNE RIVER BASIN BLIND PARK 6890 2.8 3.6 78 17.3 13.6 127 NORTH RAPID CREEK 6130 2.6 3.5 74 16.3 11.6 141 ----- ----- Basin Index (%) 76 133 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.1 21.8 133 29.5 25.4 116 BLACKHALL MTN 9820 39.4 -M * -M -M * COLUMBINE 9160 32.1 20.6 156 -M 27.7 * DIVIDE PEAK 8880 17.1 18.1 94 25.1 23.5 107 JOE WRIGHT 10120 25.7 23.2 111 34.1 28.8 118 LAPRELE CREEK 8375 5.6 7.3 77 12.5 14.3 87 MED BOW 10500 -M -M * 42.8 -M * NORTH FRENCH CREEK 10130 38.0 32.6 117 37.3 29.5 126 NEVER SUMMER 10280 26.9 21.1 127 21.8 -M * OLD BATTLE 10000 36.1 34.1 106 39.3 37.9 104 RAWAH 9020 9.8 8.0 122 19.0 16.6 114 SAGE CREEK BASIN 7850 5.3 2.7 196 13.9 15.6 89 SAND LAKE 10050 35.3 31.0 114 34.8 27.9 125 SOUTH BRUSH CREEK 8440 7.8 10.0 78 16.6 17.0 98 TOWER 10500 54.3 49.3 110 -M 43.3 * WEBBER SPRINGS 9250 23.5 21.9 107 30.6 29.0 106 WILLOW CREEK PASS 9540 16.2 13.7 118 16.6 15.1 110 ZIRKEL 9340 38.6 22.3 173 -M 30.3 * ----- ----- Basin Index (%) 119 110 SWEETWATER DEER PARK 9700 17.3 16.3 106 20.7 22.7 91 LARSEN CREEK 9000 8.9 9.8 91 16.4 -M * SOUTH PASS 9040 15.0 15.2 99 16.2 19.4 84 ----- ----- Basin Index (%) 100 88 LOWER N. PLATTE CASPER MTN. 7900 16.6 14.2 117 17.2 17.1 101 LAPRELE CREEK 8375 5.6 7.3 77 12.5 14.3 87 RENO HILL 8400 18.0 13.8 130 22.6 17.9 126 WINDY PEAK 7900 6.6 6.1 108 13.4 12.3 109 ----- ----- Basin Index (%) 113 107 LARAMIE RIVER BROOKLYN LAKE 10240 30.7 22.8 135 32.1 23.7 135 CINNABAR PARK 9574 25.4 20.0 127 31.3 26.1 120 CROW CREEK 8330 1.6 .0 * 13.0 12.8 102 DEADMAN HILL 10220 26.2 18.1 145 25.3 19.8 128 RAWAH 9020 9.8 8.0 122 19.0 16.6 114 ROACH 9700 21.1 16.8 126 26.4 21.4 123 ----- ----- Basin Index (%) 134 122 S. PLATTE BLACK MOUNTAIN 8920 10.4 -M * -M -M * CROW CREEK 8330 1.6 .0 * 13.0 12.8 102 DEADMAN HILL 10220 26.2 18.1 145 25.3 19.8 128 ----- ----- Basin Index (%) 154* 117 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.8 1.9 147 19.0 16.5 115 DIVIDE PEAK 8880 17.1 18.1 94 25.1 23.5 107 ELK RIVER 8700 17.5 14.6 120 24.1 21.9 110 LITTLE SNAKE RIVER 8915 27.6 23.3 118 36.7 31.7 116 OLD BATTLE 10000 36.1 34.1 106 39.3 37.9 104 SAGE CREEK BASIN 7850 5.3 2.7 196 13.9 15.6 89 SANDSTONE RS 8150 6.3 8.6 73 19.2 20.1 96 WHISKEY PARK 8950 38.6 25.6 151 42.3 30.4 139 ----- ----- Basin Index (%) 117 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.2 12.1 126 15.3 14.6 105 BLIND BULL SUM 8650 36.8 24.3 151 24.0 20.7 116 EAST RIM DIVIDE 7930 12.2 9.0 136 16.0 12.4 129 ELKHART PARK G.S. 9400 17.8 11.8 151 17.3 14.4 120 GROS VENTRE SUMMIT 8750 14.5 12.5 116 15.0 14.0 107 GUNSIGHT PASS 9820 19.5 13.5 144 19.6 15.4 127 KENDALL R.S. 7740 18.2 6.6 276 23.4 15.0 156 LOOMIS PARK 8240 22.7 11.9 191 25.4 18.3 139 NEW FORK LAKE 8340 12.3 7.4 166 13.7 11.6 118 POCKET CREEK 9360 12.1 -M * 12.9 -M * SNIDER BASIN 8060 15.1 10.1 150 19.9 15.1 132 SPRING CREEK DIVIDE 9000 -M 23.7 * -M 25.4 * TRIPLE PEAK 8500 33.1 19.0 174 38.2 27.0 141 ----- ----- Basin Index (%) 157 128 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.7 -M * 14.4 -M * BUCK PASTURE 9700 11.4 -M * 18.2 -M * EF BLACKS FORK GS 9360 6.0 -M * 10.8 -M * HAMS FORK 7840 9.9 5.0 198 14.7 12.6 117 HEWINTA 9519 5.7 6.9 83 15.4 15.5 99 HICKERSON PARK 9145 .2 5.0 4 9.2 11.5 80 HOLE-IN-ROCK 9150 .9 5.0 18 10.5 11.0 95 INDIAN CREEK 9425 31.1 23.7 131 27.6 24.2 114 KELLEY R.S. 8180 15.7 11.9 132 21.1 19.5 108 SPIRIT LK 10235 -M -M * -M -M * STEEL CREEK PARK 10200 21.1 16.5 128 17.5 18.4 95 ----- ----- Basin Index (%) 114 103 UPPER BEAR RIVER BEAR RIVER RS 8777 .7 -M * 13.6 -M * BUG LAKE 7950 19.8 16.2 122 21.4 20.9 102 BURTS MILLER RANCH 8000 .2 -M * 7.4 -M * CHALK CREEK #1 8993 20.0 24.6 81 24.7 27.5 90 HAYDEN FORK 9212 9.7 10.7 91 23.0 22.9 100 KELLEY R.S. 8180 15.7 11.9 132 21.1 19.5 108 LILY LAKE 9156 10.0 9.9 101 16.5 18.8 88 MONTE CRISTO 8960 22.6 27.4 82 26.8 28.2 95 SALT RIVER SUMMIT 7760 13.6 8.5 160 19.8 17.8 111 ----- ----- Basin Index (%) 102 99 ----------------------------------------------------------------------------- -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.