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 WEDNESDAY: APRIL 30 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 17.9 9.7 185 28.8 22.6 127 BLACK BEAR 8170 45.7 37.4 122 45.7 41.6 110 BLIND BULL SUM 8650 38.1 23.4 163 24.7 21.2 117 COTTONWOOD CREEK 7670 27.9 15.7 178 37.2 27.3 136 EAST RIM DIVIDE 7930 12.0 8.3 145 16.6 12.8 130 GRAND TARGHEE 9260 55.5 44.4 125 -M 34.4 * GRANITE CREEK 6770 19.8 8.5 233 26.2 21.3 123 GRASSY LAKE 7265 39.3 29.4 134 44.0 39.1 113 GROS VENTRE SUMMIT 8750 14.6 11.7 125 15.8 14.5 109 GUNSIGHT PASS 9820 20.6 12.8 161 20.5 16.0 128 LEWIS LAKE DIVIDE 7850 43.2 30.3 143 44.0 38.4 115 PHILLIPS BENCH 8200 36.7 25.6 143 38.3 30.5 126 SALT RIVER SUMMIT 7760 14.2 8.0 178 20.7 18.3 113 SNAKE RIVER STATION 6920 14.9 7.9 189 28.4 24.6 115 SPRING CREEK DIVIDE 9000 38.3 24.3 158 34.6 26.1 133 THUMB DIVIDE 7980 20.6 12.9 160 22.0 20.8 106 TOGWOTEE PASS 9580 35.1 24.7 142 36.0 27.1 133 TWO OCEAN PLATEAU 9240 39.6 29.7 133 37.7 29.9 126 WILLOW CREEK 8380 40.1 23.5 171 44.7 37.4 120 YOUNTS PEAK 8350 -M 15.4 * -M 17.5 * ----- ----- Basin Index (%) 148 121 MADISON-GALLATIN BLACK BEAR 8170 45.7 37.4 122 45.7 41.6 110 CANYON 7870 15.4 10.8 143 19.2 17.9 107 MADISON PLATEAU 7750 27.5 21.6 127 29.1 28.8 101 WEST YELLOWSTONE 6700 5.5 2.5 220 18.7 15.9 118 WHISKEY CREEK 6800 17.5 14.9 117 24.7 22.2 111 ----- ----- Basin Index (%) 128 109 YELLOWSTONE BEARTOOTH LAKE 9360 34.8 22.9 152 33.2 21.8 152 BURNT MTN 5880 5.7 .0 * 22.5 15.5 145 CANYON 7870 15.4 10.8 143 19.2 17.9 107 COLE CREEK 7850 25.7 16.4 157 19.6 16.2 121 EVENING STAR 9200 42.4 24.9 170 44.9 30.2 149 FISHER CREEK 9100 47.9 32.8 146 44.5 35.0 127 NORTHEAST ENTRANCE 7350 11.5 3.5 329 18.0 13.7 131 PARKER PEAK 9400 37.7 21.4 176 33.6 19.9 169 SYLVAN LAKE 8420 25.6 20.1 127 33.4 24.9 134 THUMB DIVIDE 7980 20.6 12.9 160 22.0 20.8 106 TWO OCEAN PLATEAU 9240 39.6 29.7 133 37.7 29.9 126 WHITE MILL 8700 36.3 23.8 153 32.8 26.1 126 WOLVERINE 7650 13.0 3.1 419 20.0 13.7 146 ----- ----- Basin Index (%) 160 134 WIND RIVER BURROUGHS CREEK 8750 -M 13.0 * -M 17.8 * CASTLE CREEK 8400 6.3 -M * 13.3 -M * COLD SPRINGS 9630 6.6 1.4 471 14.2 12.4 115 DEER PARK 9700 18.0 16.1 112 21.3 23.2 92 HOBBS PARK 10100 15.7 16.0 98 15.5 16.5 94 KIRWIN 9550 19.0 10.4 183 19.8 13.6 146 LITTLE WARM 9370 13.5 8.8 153 18.4 15.3 120 OWL CREEK 8975 2.5 1.2 208 8.7 7.8 112 SOUTH PASS 9040 14.8 15.0 99 16.5 20.2 82 ST. LAWRENCE ALT 8620 .0 3.0 0 10.5 11.4 92 TOGWOTEE PASS 9580 35.1 24.7 142 36.0 27.1 133 TOWNSEND CREEK 8700 5.2 7.8 67 10.9 14.8 74 ----- ----- Basin Index (%) 125 106 BIGHORN BASIN BALD MTN. 9380 29.9 20.5 146 23.2 19.5 119 BEAR TRAP MEADOW 8200 7.9 1.1 718 12.7 10.4 122 BONE SPRINGS DIV 9350 26.0 16.6 157 20.2 18.0 112 GRAVE SPRINGS 8550 13.1 9.4 139 14.4 12.6 114 KIRWIN 9550 19.0 10.4 183 19.8 13.6 146 MARQUETTE 8760 15.7 -M * 15.5 -M * MIDDLE POWDER 7760 18.9 11.8 160 16.5 14.0 118 OWL CREEK 8975 2.5 1.2 208 8.7 7.8 112 POWDER RIVER PASS 9480 15.4 9.6 160 18.5 14.9 124 SHELL CREEK 9580 21.9 16.0 137 19.4 16.1 120 TIMBER CREEK 7950 2.2 3.2 69 11.1 9.8 113 ----- ----- Basin Index (%) 157 120 SHOSHONE RIVER BLACKWATER 9780 36.0 25.2 143 33.3 23.3 143 EVENING STAR 9200 42.4 24.9 170 44.9 30.2 149 MARQUETTE 8760 15.7 -M * 15.5 -M * SYLVAN ROAD 7120 8.8 6.3 140 24.6 18.5 133 YOUNTS PEAK 8350 -M 15.4 * -M 17.5 * ----- ----- Basin Index (%) 155 143 POWDER RIVER BEAR TRAP MEADOW 8200 7.9 1.1 718 12.7 10.4 122 CLOUD PEAK RESERVOIR 9860 24.5 16.5 148 22.6 16.4 138 GRAVE SPRINGS 8550 13.1 9.4 139 14.4 12.6 114 HANSEN SAWMILL 8360 8.3 2.9 286 14.3 10.7 134 MIDDLE POWDER 7760 18.9 11.8 160 16.5 14.0 118 POWDER RIVER PASS 9480 15.4 9.6 160 18.5 14.9 124 SOLDIER PARK 8720 12.6 -M * 14.4 -M * ----- ----- Basin Index (%) 172 125 TONGUE RIVER BIG GOOSE 7990 13.2 9.2 143 17.7 13.8 128 BONE SPRINGS DIV 9350 26.0 16.6 157 20.2 18.0 112 BURGESS JUNCTION 7880 18.3 12.1 151 19.4 14.6 133 DOME LAKE 8880 18.0 11.5 157 18.3 16.2 113 LITTLE GOOSE 8870 15.5 -M * 20.4 -M * SUCKER CREEK 8880 19.2 12.3 156 23.3 17.1 136 TIE CREEK 6870 7.3 2.7 270 18.1 14.1 128 ----- ----- Basin Index (%) 158 125 BELLE FOURCHE COLE CANYON 5910 3.9 .3 1300* 15.8 11.5 137 ----- ----- Basin Index (%) 1300* 137 CHEYENNE RIVER BASIN BLIND PARK 6890 2.8 1.3 215 19.2 14.1 136 NORTH RAPID CREEK 6130 3.8 1.3 292 18.7 12.0 156 ----- ----- Basin Index (%) 254 145 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.6 22.3 133 30.4 26.0 117 BLACKHALL MTN 9820 39.2 -M * -M -M * COLUMBINE 9160 31.0 18.6 167 -M 28.4 * DIVIDE PEAK 8880 15.7 18.0 87 25.3 24.1 105 JOE WRIGHT 10120 28.5 23.4 122 36.4 29.6 123 LAPRELE CREEK 8375 6.5 6.4 102 14.1 14.9 95 MED BOW 10500 -M -M * 43.6 -M * NORTH FRENCH CREEK 10130 40.2 32.9 122 39.3 30.5 129 NEVER SUMMER 10280 28.6 21.7 132 23.3 -M * OLD BATTLE 10000 35.6 34.7 103 39.7 39.0 102 RAWAH 9020 9.8 6.5 151 20.3 17.1 119 SAGE CREEK BASIN 7850 2.1 1.1 191* 14.0 16.1 87 SAND LAKE 10050 36.7 31.3 117 35.9 28.9 124 SOUTH BRUSH CREEK 8440 8.6 9.6 90 18.1 17.7 102 TOWER 10500 54.4 49.9 109 55.8 44.5 125 WEBBER SPRINGS 9250 22.2 21.9 101 31.0 29.8 104 WILLOW CREEK PASS 9540 16.6 14.1 118 16.8 15.6 108 ZIRKEL 9340 37.5 21.2 177 -M 30.8 * ----- ----- Basin Index (%) 121 113 SWEETWATER DEER PARK 9700 18.0 16.1 112 21.3 23.2 92 LARSEN CREEK 9000 7.7 9.3 83 16.5 -M * SOUTH PASS 9040 14.8 15.0 99 16.5 20.2 82 ----- ----- Basin Index (%) 100 87 LOWER N. PLATTE CASPER MTN. 7900 18.1 13.7 132 18.8 17.8 106 LAPRELE CREEK 8375 6.5 6.4 102 14.1 14.9 95 RENO HILL 8400 19.6 12.8 153 23.2 18.7 124 WINDY PEAK 7900 6.8 4.4 155 14.5 12.9 112 ----- ----- Basin Index (%) 137 110 LARAMIE RIVER BROOKLYN LAKE 10240 31.1 23.3 133 33.2 24.5 136 CINNABAR PARK 9574 24.5 19.7 124 32.3 26.8 121 CROW CREEK 8330 1.5 .0 * 14.3 13.3 108 DEADMAN HILL 10220 27.3 18.9 144 26.4 20.5 129 RAWAH 9020 9.8 6.5 151 20.3 17.1 119 ROACH 9700 20.7 17.2 120 26.7 22.2 120 ----- ----- Basin Index (%) 134 123 S. PLATTE BLACK MOUNTAIN 8920 10.4 -M * -M -M * CROW CREEK 8330 1.5 .0 * 14.3 13.3 108 DEADMAN HILL 10220 27.3 18.9 144 26.4 20.5 129 ----- ----- Basin Index (%) 152* 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 19.1 17.0 112 DIVIDE PEAK 8880 15.7 18.0 87 25.3 24.1 105 ELK RIVER 8700 15.6 13.6 115 24.8 22.6 110 LITTLE SNAKE RIVER 8915 26.2 22.5 116 37.3 32.5 115 OLD BATTLE 10000 35.6 34.7 103 39.7 39.0 102 SAGE CREEK BASIN 7850 2.1 1.1 191* 14.0 16.1 87 SANDSTONE RS 8150 5.0 6.3 79 19.3 20.6 94 WHISKEY PARK 8950 37.5 26.3 143 43.0 31.3 137 ----- ----- Basin Index (%) 113 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.6 10.9 134 15.6 15.1 103 BLIND BULL SUM 8650 38.1 23.4 163 24.7 21.2 117 EAST RIM DIVIDE 7930 12.0 8.3 145 16.6 12.8 130 ELKHART PARK G.S. 9400 18.4 11.5 160 18.1 14.9 121 GROS VENTRE SUMMIT 8750 14.6 11.7 125 15.8 14.5 109 GUNSIGHT PASS 9820 20.6 12.8 161 20.5 16.0 128 KENDALL R.S. 7740 16.9 4.8 352 23.8 15.4 155 LOOMIS PARK 8240 22.9 11.2 204 26.3 18.8 140 NEW FORK LAKE 8340 12.3 6.6 186 14.0 12.0 117 POCKET CREEK 9360 12.6 -M * 13.5 -M * SNIDER BASIN 8060 13.7 9.5 144 20.4 15.5 132 SPRING CREEK DIVIDE 9000 38.3 24.3 158 34.6 26.1 133 TRIPLE PEAK 8500 33.3 17.9 186 39.2 27.8 141 ----- ----- Basin Index (%) 167 128 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.6 -M * 15.3 -M * BUCK PASTURE 9700 12.0 -M * 19.7 -M * EF BLACKS FORK GS 9360 6.1 -M * 11.7 -M * HAMS FORK 7840 9.9 3.3 300 15.0 13.0 115 HEWINTA 9519 6.3 5.0 126 16.3 16.0 102 HICKERSON PARK 9145 .1 4.5 2 9.6 11.9 81 HOLE-IN-ROCK 9150 .3 2.9 10 11.0 11.4 96 INDIAN CREEK 9425 32.5 23.3 139 28.4 24.9 114 KELLEY R.S. 8180 16.0 11.7 137 21.7 20.1 108 SPIRIT LK 10235 8.3 -M * 15.8 -M * STEEL CREEK PARK 10200 22.1 17.0 130 18.6 18.9 98 ----- ----- Basin Index (%) 129 104 UPPER BEAR RIVER BEAR RIVER RS 8777 .2 -M * 14.3 -M * BUG LAKE 7950 20.3 15.4 132 22.2 21.6 103 BURTS MILLER RANCH 8000 .2 -M * 7.9 -M * CHALK CREEK #1 8993 20.8 24.4 85 26.0 28.2 92 HAYDEN FORK 9212 9.8 9.5 103 24.1 23.6 102 KELLEY R.S. 8180 16.0 11.7 137 21.7 20.1 108 LILY LAKE 9156 10.8 9.9 109 17.5 19.4 90 MONTE CRISTO 8960 24.2 26.9 90 28.1 29.1 97 SALT RIVER SUMMIT 7760 14.2 8.0 178 20.7 18.3 113 ----- ----- Basin Index (%) 110 100 ----------------------------------------------------------------------------- -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.