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 27 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 17.8 10.4 171 28.1 22.3 126 BLACK BEAR 8170 45.2 37.0 122 45.2 41.0 110 BLIND BULL SUM 8650 37.5 24.1 156 24.5 20.8 118 COTTONWOOD CREEK 7670 27.2 16.7 163 36.9 26.8 138 EAST RIM DIVIDE 7930 11.7 8.8 133 16.6 12.5 133 GRAND TARGHEE 9260 55.0 43.6 126 -M 33.6 * GRANITE CREEK 6770 19.9 9.0 221 25.8 20.8 124 GRASSY LAKE 7265 39.0 30.0 130 43.6 38.5 113 GROS VENTRE SUMMIT 8750 14.8 12.1 122 15.5 14.2 109 GUNSIGHT PASS 9820 20.5 13.3 154 20.6 15.5 133 LEWIS LAKE DIVIDE 7850 42.3 30.7 138 43.5 37.8 115 PHILLIPS BENCH 8200 36.3 25.6 142 37.8 30.0 126 SALT RIVER SUMMIT 7760 13.7 8.2 167 20.5 18.0 114 SNAKE RIVER STATION 6920 14.7 9.4 156 28.2 24.2 117 SPRING CREEK DIVIDE 9000 37.8 24.0 158 34.3 25.6 134 THUMB DIVIDE 7980 20.5 13.9 147 21.8 20.4 107 TOGWOTEE PASS 9580 34.0 24.6 138 35.4 26.6 133 TWO OCEAN PLATEAU 9240 38.8 29.3 132 37.1 29.5 126 WILLOW CREEK 8380 40.3 24.9 162 44.5 36.7 121 YOUNTS PEAK 8350 -M 15.1 * -M 17.2 * ----- ----- Basin Index (%) 143 121 MADISON-GALLATIN BLACK BEAR 8170 45.2 37.0 122 45.2 41.0 110 CANYON 7870 15.3 11.5 133 18.8 17.6 107 MADISON PLATEAU 7750 27.1 22.2 122 28.8 28.3 102 WEST YELLOWSTONE 6700 6.6 4.2 157 18.6 15.6 119 WHISKEY CREEK 6800 17.6 15.4 114 24.2 21.9 111 ----- ----- Basin Index (%) 124 109 YELLOWSTONE BEARTOOTH LAKE 9360 34.6 23.4 148 33.0 21.4 154 BURNT MTN 5880 6.0 .0 * 22.3 15.0 149 CANYON 7870 15.3 11.5 133 18.8 17.6 107 COLE CREEK 7850 25.7 16.3 158 19.0 15.7 121 EVENING STAR 9200 42.2 24.6 172 44.4 29.7 149 FISHER CREEK 9100 48.1 33.2 145 43.9 34.4 128 NORTHEAST ENTRANCE 7350 11.9 4.6 259 17.9 13.4 134 PARKER PEAK 9400 -M 21.8 * 33.0 19.6 168 SYLVAN LAKE 8420 24.9 20.3 123 32.7 24.5 133 THUMB DIVIDE 7980 20.5 13.9 147 21.8 20.4 107 TWO OCEAN PLATEAU 9240 38.8 29.3 132 37.1 29.5 126 WHITE MILL 8700 36.0 23.7 152 32.6 25.7 127 WOLVERINE 7650 14.6 4.8 304 19.9 13.4 149 ----- ----- Basin Index (%) 155 134 WIND RIVER BURROUGHS CREEK 8750 -M 13.0 * -M 17.4 * CASTLE CREEK 8400 6.8 -M * 13.3 -M * COLD SPRINGS 9630 7.5 2.4 312 13.7 11.9 115 DEER PARK 9700 -M 16.3 * 20.9 22.9 91 HOBBS PARK 10100 15.3 15.8 97 15.1 16.2 93 KIRWIN 9550 18.7 10.2 183 19.6 13.3 147 LITTLE WARM 9370 13.2 9.2 143 18.0 14.7 122 OWL CREEK 8975 2.4 2.0 120 8.6 7.5 115 SOUTH PASS 9040 14.5 15.2 95 16.3 19.8 82 ST. LAWRENCE ALT 8620 .2 4.2 5 9.3 11.0 85 TOGWOTEE PASS 9580 34.0 24.6 138 35.4 26.6 133 TOWNSEND CREEK 8700 4.9 8.4 58 10.6 14.5 73 ----- ----- Basin Index (%) 120 106 BIGHORN BASIN BALD MTN. 9380 28.4 20.6 138 22.5 19.1 118 BEAR TRAP MEADOW 8200 7.8 1.6 488 12.6 10.1 125 BONE SPRINGS DIV 9350 24.7 16.5 150 19.5 17.6 111 GRAVE SPRINGS 8550 12.0 9.1 132 14.0 12.3 114 KIRWIN 9550 18.7 10.2 183 19.6 13.3 147 MARQUETTE 8760 15.6 -M * 15.4 -M * MIDDLE POWDER 7760 17.5 12.2 143 15.9 13.7 116 OWL CREEK 8975 2.4 2.0 120 8.6 7.5 115 POWDER RIVER PASS 9480 15.1 10.0 151 18.3 14.5 126 SHELL CREEK 9580 20.8 15.9 131 18.8 15.7 120 TIMBER CREEK 7950 2.9 3.6 81 11.0 9.3 118 ----- ----- Basin Index (%) 148 121 SHOSHONE RIVER BLACKWATER 9780 35.7 24.7 145 32.8 22.8 144 EVENING STAR 9200 42.2 24.6 172 44.4 29.7 149 MARQUETTE 8760 15.6 -M * 15.4 -M * SYLVAN ROAD 7120 8.7 7.5 116 24.3 18.1 134 YOUNTS PEAK 8350 -M 15.1 * -M 17.2 * ----- ----- Basin Index (%) 152 144 POWDER RIVER BEAR TRAP MEADOW 8200 7.8 1.6 488 12.6 10.1 125 CLOUD PEAK RESERVOIR 9860 22.6 16.5 137 21.2 16.0 132 GRAVE SPRINGS 8550 12.0 9.1 132 14.0 12.3 114 HANSEN SAWMILL 8360 8.1 3.8 213 14.1 10.4 136 MIDDLE POWDER 7760 17.5 12.2 143 15.9 13.7 116 POWDER RIVER PASS 9480 15.1 10.0 151 18.3 14.5 126 SOLDIER PARK 8720 11.9 -M * 13.7 -M * ----- ----- Basin Index (%) 156 125 TONGUE RIVER BIG GOOSE 7990 12.5 9.1 137 17.1 13.5 127 BONE SPRINGS DIV 9350 24.7 16.5 150 19.5 17.6 111 BURGESS JUNCTION 7880 17.0 12.3 138 18.2 14.3 127 DOME LAKE 8880 16.5 11.7 141 17.5 15.9 110 LITTLE GOOSE 8870 14.5 -M * 19.6 -M * SUCKER CREEK 8880 17.7 12.5 142 21.9 16.7 131 TIE CREEK 6870 6.5 3.0 217 17.1 13.7 125 ----- ----- Basin Index (%) 146 121 BELLE FOURCHE COLE CANYON 5910 3.5 .4 875* 15.0 11.2 134 ----- ----- Basin Index (%) 875* 134 CHEYENNE RIVER BASIN BLIND PARK 6890 1.4 2.7 52 17.5 13.8 127 NORTH RAPID CREEK 6130 1.4 2.7 52 16.5 11.8 140 ----- ----- Basin Index (%) 52 133 UPPER N. PLATTE ARAPAHO RIDGE 10960 28.9 22.1 131 29.8 25.7 116 BLACKHALL MTN 9820 38.7 -M * -M -M * COLUMBINE 9160 30.7 19.9 154 -M 28.0 * DIVIDE PEAK 8880 15.6 17.9 87 25.1 23.8 105 JOE WRIGHT 10120 25.7 23.4 110 34.4 29.2 118 LAPRELE CREEK 8375 5.1 7.1 72 12.6 14.6 86 MED BOW 10500 -M -M * 43.1 -M * NORTH FRENCH CREEK 10130 38.2 32.9 116 37.5 30.0 125 NEVER SUMMER 10280 27.1 21.4 127 22.1 -M * OLD BATTLE 10000 36.0 34.4 105 39.4 38.4 103 RAWAH 9020 8.9 7.8 114 19.5 16.8 116 SAGE CREEK BASIN 7850 3.3 1.7 194 13.9 15.8 88 SAND LAKE 10050 35.0 31.2 112 34.9 28.4 123 SOUTH BRUSH CREEK 8440 7.1 10.0 71 16.7 17.4 96 TOWER 10500 54.6 49.7 110 -M 43.8 * WEBBER SPRINGS 9250 21.3 22.0 97 30.7 29.4 104 WILLOW CREEK PASS 9540 16.2 13.8 117 16.8 15.3 110 ZIRKEL 9340 37.7 21.9 172 -M 30.5 * ----- ----- Basin Index (%) 116 109 SWEETWATER DEER PARK 9700 -M 16.3 * 20.9 22.9 91 LARSEN CREEK 9000 8.3 9.6 86 16.5 -M * SOUTH PASS 9040 14.5 15.2 95 16.3 19.8 82 ----- ----- Basin Index (%) 92 87 LOWER N. PLATTE CASPER MTN. 7900 16.1 14.1 114 17.4 17.5 99 LAPRELE CREEK 8375 5.1 7.1 72 12.6 14.6 86 RENO HILL 8400 17.3 13.6 127 22.6 18.3 123 WINDY PEAK 7900 6.0 5.5 109 13.6 12.6 108 ----- ----- Basin Index (%) 110 105 LARAMIE RIVER BROOKLYN LAKE 10240 29.9 23.0 130 32.1 24.1 133 CINNABAR PARK 9574 24.0 20.1 119 31.4 26.4 119 CROW CREEK 8330 .0 .0 * 13.1 13.0 101 DEADMAN HILL 10220 25.7 18.5 139 25.4 20.1 126 RAWAH 9020 8.9 7.8 114 19.5 16.8 116 ROACH 9700 20.0 17.0 118 26.5 21.8 122 ----- ----- Basin Index (%) 126 121 S. PLATTE BLACK MOUNTAIN 8920 9.8 -M * -M -M * CROW CREEK 8330 .0 .0 * 13.1 13.0 101 DEADMAN HILL 10220 25.7 18.5 139 25.4 20.1 126 ----- ----- Basin Index (%) 139* 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .9 1.0 90* 19.0 16.8 113 DIVIDE PEAK 8880 15.6 17.9 87 25.1 23.8 105 ELK RIVER 8700 15.2 14.3 106 24.4 22.2 110 LITTLE SNAKE RIVER 8915 25.8 23.1 112 36.9 32.0 115 OLD BATTLE 10000 36.0 34.4 105 39.4 38.4 103 SAGE CREEK BASIN 7850 3.3 1.7 194 13.9 15.8 88 SANDSTONE RS 8150 4.9 7.7 64 19.2 20.4 94 WHISKEY PARK 8950 37.5 25.7 146 42.5 30.8 138 ----- ----- Basin Index (%) 111 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.1 11.8 128 15.5 14.8 105 BLIND BULL SUM 8650 37.5 24.1 156 24.5 20.8 118 EAST RIM DIVIDE 7930 11.7 8.8 133 16.6 12.5 133 ELKHART PARK G.S. 9400 18.3 11.8 155 17.9 14.6 123 GROS VENTRE SUMMIT 8750 14.8 12.1 122 15.5 14.2 109 GUNSIGHT PASS 9820 20.5 13.3 154 20.6 15.5 133 KENDALL R.S. 7740 17.8 5.9 302 23.8 15.1 158 LOOMIS PARK 8240 22.8 11.5 198 26.0 18.5 141 NEW FORK LAKE 8340 12.6 7.1 177 13.9 11.7 119 POCKET CREEK 9360 12.8 -M * 13.4 -M * SNIDER BASIN 8060 14.2 10.0 142 20.2 15.2 133 SPRING CREEK DIVIDE 9000 37.8 24.0 158 34.3 25.6 134 TRIPLE PEAK 8500 33.4 18.8 178 38.8 27.3 142 ----- ----- Basin Index (%) 161 130 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.4 -M * 14.9 -M * BUCK PASTURE 9700 11.4 -M * 19.1 -M * EF BLACKS FORK GS 9360 5.5 -M * 11.2 -M * HAMS FORK 7840 9.3 4.4 211 14.9 12.7 117 HEWINTA 9519 5.6 6.1 92 15.9 15.7 101 HICKERSON PARK 9145 .0 5.0 0 9.5 11.7 81 HOLE-IN-ROCK 9150 .3 4.2 7 10.8 11.2 96 INDIAN CREEK 9425 31.9 23.8 134 28.2 24.4 116 KELLEY R.S. 8180 15.9 11.8 135 21.6 19.7 110 SPIRIT LK 10235 8.1 -M * 15.6 -M * STEEL CREEK PARK 10200 21.4 16.7 128 18.2 18.6 98 ----- ----- Basin Index (%) 117 104 UPPER BEAR RIVER BEAR RIVER RS 8777 .5 -M * 14.2 -M * BUG LAKE 7950 19.9 16.1 124 22.0 21.2 104 BURTS MILLER RANCH 8000 .4 -M * 7.6 -M * CHALK CREEK #1 8993 20.3 24.7 82 25.6 27.8 92 HAYDEN FORK 9212 9.2 10.1 91 23.9 23.2 103 KELLEY R.S. 8180 15.9 11.8 135 21.6 19.7 110 LILY LAKE 9156 10.4 9.7 107 17.3 19.0 91 MONTE CRISTO 8960 23.5 27.3 86 27.5 28.6 96 SALT RIVER SUMMIT 7760 13.7 8.2 167 20.5 18.0 114 ----- ----- Basin Index (%) 105 101 ----------------------------------------------------------------------------- -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.