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 THURSDAY: MAY 1 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 18.3 9.3 197 28.8 22.8 126 BLACK BEAR 8170 45.9 37.4 123 45.7 41.7 110 BLIND BULL SUM 8650 38.3 23.1 166 24.7 21.3 116 COTTONWOOD CREEK 7670 28.2 15.3 184 37.2 27.4 136 EAST RIM DIVIDE 7930 11.6 8.2 141 16.6 12.9 129 GRAND TARGHEE 9260 55.5 44.8 124 -M 34.6 * GRANITE CREEK 6770 19.4 8.3 234 26.2 21.3 123 GRASSY LAKE 7265 39.5 29.1 136 44.1 39.3 112 GROS VENTRE SUMMIT 8750 14.3 11.6 123 15.8 14.6 108 GUNSIGHT PASS 9820 20.7 12.5 166 20.6 16.0 129 LEWIS LAKE DIVIDE 7850 43.1 30.1 143 44.1 38.5 115 PHILLIPS BENCH 8200 36.7 25.4 144 38.4 30.7 125 SALT RIVER SUMMIT 7760 13.9 7.9 176 20.7 18.4 112 SNAKE RIVER STATION 6920 15.1 7.4 204 28.4 24.8 115 SPRING CREEK DIVIDE 9000 38.4 24.3 158 34.6 26.2 132 THUMB DIVIDE 7980 20.2 12.4 163 22.0 20.9 105 TOGWOTEE PASS 9580 35.2 24.7 143 36.1 27.2 133 TWO OCEAN PLATEAU 9240 39.7 29.7 134 37.7 30.1 125 WILLOW CREEK 8380 40.3 23.0 175 44.7 37.6 119 YOUNTS PEAK 8350 -M 15.5 * -M 17.6 * ----- ----- Basin Index (%) 149 120 MADISON-GALLATIN BLACK BEAR 8170 45.9 37.4 123 45.7 41.7 110 CANYON 7870 15.4 10.4 148 19.2 18.0 107 MADISON PLATEAU 7750 27.4 21.3 129 29.1 28.9 101 WEST YELLOWSTONE 6700 4.2 1.8 233 18.7 16.0 117 WHISKEY CREEK 6800 17.4 14.6 119 24.7 22.3 111 ----- ----- Basin Index (%) 129 108 YELLOWSTONE BEARTOOTH LAKE 9360 34.9 22.8 153 33.2 21.9 152 BURNT MTN 5880 5.2 .0 * 22.7 15.9 143 CANYON 7870 15.4 10.4 148 19.2 18.0 107 COLE CREEK 7850 25.7 16.6 155 19.6 16.4 120 EVENING STAR 9200 42.5 24.9 171 44.9 30.4 148 FISHER CREEK 9100 47.9 32.7 146 44.5 35.1 127 NORTHEAST ENTRANCE 7350 11.4 3.0 380 18.0 13.8 130 PARKER PEAK 9400 37.7 21.3 177 33.7 20.0 168 SYLVAN LAKE 8420 25.4 19.8 128 33.4 25.1 133 THUMB DIVIDE 7980 20.2 12.4 163 22.0 20.9 105 TWO OCEAN PLATEAU 9240 39.7 29.7 134 37.7 30.1 125 WHITE MILL 8700 36.5 23.8 153 32.8 26.3 125 WOLVERINE 7650 12.7 2.5 508 20.0 13.7 146 ----- ----- Basin Index (%) 162 133 WIND RIVER BURROUGHS CREEK 8750 -M 12.9 * -M 17.9 * CASTLE CREEK 8400 5.9 -M * 13.3 -M * COLD SPRINGS 9630 6.2 1.3 477 14.3 12.4 115 DEER PARK 9700 18.2 16.0 114 21.7 23.4 93 HOBBS PARK 10100 16.3 16.0 102 15.7 16.6 95 KIRWIN 9550 19.2 10.4 185 19.9 13.8 144 LITTLE WARM 9370 13.4 8.7 154 18.4 15.4 119 OWL CREEK 8975 1.8 1.0 180 8.8 7.9 111 SOUTH PASS 9040 15.2 14.9 102 16.8 20.3 83 ST. LAWRENCE ALT 8620 .0 2.5 0 10.5 11.5 91 TOGWOTEE PASS 9580 35.2 24.7 143 36.1 27.2 133 TOWNSEND CREEK 8700 5.3 7.5 71 10.9 14.9 73 ----- ----- Basin Index (%) 127 106 BIGHORN BASIN BALD MTN. 9380 30.0 20.5 146 23.3 19.7 118 BEAR TRAP MEADOW 8200 8.0 .9 889 12.8 10.6 121 BONE SPRINGS DIV 9350 25.4 16.5 154 20.2 18.2 111 GRAVE SPRINGS 8550 13.3 9.4 141 14.4 12.8 112 KIRWIN 9550 19.2 10.4 185 19.9 13.8 144 MARQUETTE 8760 15.7 -M * 15.5 -M * MIDDLE POWDER 7760 18.9 11.6 163 16.6 14.1 118 OWL CREEK 8975 1.8 1.0 180 8.8 7.9 111 POWDER RIVER PASS 9480 15.8 9.4 168 18.6 15.1 123 SHELL CREEK 9580 22.1 15.9 139 19.5 16.3 120 TIMBER CREEK 7950 1.4 3.1 45 11.1 10.0 111 ----- ----- Basin Index (%) 158 119 SHOSHONE RIVER BLACKWATER 9780 36.0 25.3 142 33.4 23.4 143 EVENING STAR 9200 42.5 24.9 171 44.9 30.4 148 MARQUETTE 8760 15.7 -M * 15.5 -M * SYLVAN ROAD 7120 7.9 5.8 136 24.6 18.6 132 YOUNTS PEAK 8350 -M 15.5 * -M 17.6 * ----- ----- Basin Index (%) 154 142 POWDER RIVER BEAR TRAP MEADOW 8200 8.0 .9 889 12.8 10.6 121 CLOUD PEAK RESERVOIR 9860 24.6 16.5 149 22.7 16.6 137 GRAVE SPRINGS 8550 13.3 9.4 141 14.4 12.8 112 HANSEN SAWMILL 8360 8.4 2.5 336 14.3 10.8 132 MIDDLE POWDER 7760 18.9 11.6 163 16.6 14.1 118 POWDER RIVER PASS 9480 15.8 9.4 168 18.6 15.1 123 SOLDIER PARK 8720 12.9 -M * 14.5 -M * ----- ----- Basin Index (%) 177 124 TONGUE RIVER BIG GOOSE 7990 13.2 9.2 143 17.8 14.0 127 BONE SPRINGS DIV 9350 25.4 16.5 154 20.2 18.2 111 BURGESS JUNCTION 7880 18.4 12.1 152 19.5 14.8 132 DOME LAKE 8880 18.0 11.4 158 18.4 16.4 112 LITTLE GOOSE 8870 15.6 -M * 20.5 -M * SUCKER CREEK 8880 19.2 12.2 157 23.4 17.3 135 TIE CREEK 6870 7.3 2.7 270 18.2 14.3 127 ----- ----- Basin Index (%) 158 124 BELLE FOURCHE COLE CANYON 5910 4.0 .3 1333* 15.8 11.8 134 ----- ----- Basin Index (%) 1333* 134 CHEYENNE RIVER BASIN BLIND PARK 6890 3.0 .8 375 19.3 14.3 135 NORTH RAPID CREEK 6130 3.8 .8 475 18.7 12.2 153 ----- ----- Basin Index (%) 425 143 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.8 22.3 134 30.6 26.2 117 BLACKHALL MTN 9820 39.6 -M * -M -M * COLUMBINE 9160 31.3 18.2 172 -M 28.5 * DIVIDE PEAK 8880 15.7 18.0 87 25.3 24.3 104 JOE WRIGHT 10120 28.9 23.3 124 37.3 29.8 125 LAPRELE CREEK 8375 6.7 6.1 110 14.3 15.0 95 MED BOW 10500 -M -M * 43.8 -M * NORTH FRENCH CREEK 10130 40.6 32.9 123 39.6 30.7 129 NEVER SUMMER 10280 28.9 21.8 133 23.7 -M * OLD BATTLE 10000 35.9 34.7 103 39.8 39.2 102 RAWAH 9020 10.0 6.1 164 20.4 17.2 119 SAGE CREEK BASIN 7850 1.8 1.1 164* 14.0 16.1 87 SAND LAKE 10050 37.0 31.4 118 37.0 29.0 128 SOUTH BRUSH CREEK 8440 8.8 9.2 96 18.3 17.8 103 TOWER 10500 54.8 50.0 110 55.9 44.7 125 WEBBER SPRINGS 9250 22.7 21.7 105 31.2 29.9 104 WILLOW CREEK PASS 9540 16.7 14.2 118 17.4 15.8 110 ZIRKEL 9340 37.7 21.0 180 -M 31.0 * ----- ----- Basin Index (%) 123 114 SWEETWATER DEER PARK 9700 18.2 16.0 114 21.7 23.4 93 LARSEN CREEK 9000 7.8 9.2 85 16.5 -M * SOUTH PASS 9040 15.2 14.9 102 16.8 20.3 83 ----- ----- Basin Index (%) 103 88 LOWER N. PLATTE CASPER MTN. 7900 18.2 13.3 137 18.8 17.9 105 LAPRELE CREEK 8375 6.7 6.1 110 14.3 15.0 95 RENO HILL 8400 19.7 12.6 156 24.8 18.9 131 WINDY PEAK 7900 6.9 4.0 172 14.6 13.0 112 ----- ----- Basin Index (%) 143 112 LARAMIE RIVER BROOKLYN LAKE 10240 31.2 23.3 134 33.8 24.7 137 CINNABAR PARK 9574 24.4 19.4 126 32.5 26.9 121 CROW CREEK 8330 1.6 .0 * 14.4 13.4 107 DEADMAN HILL 10220 27.4 19.0 144 27.0 20.6 131 RAWAH 9020 10.0 6.1 164 20.4 17.2 119 ROACH 9700 20.9 17.2 122 26.8 22.2 121 ----- ----- Basin Index (%) 136 124 S. PLATTE BLACK MOUNTAIN 8920 10.5 -M * -M -M * CROW CREEK 8330 1.6 .0 * 14.4 13.4 107 DEADMAN HILL 10220 27.4 19.0 144 27.0 20.6 131 ----- ----- Basin Index (%) 153* 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 * 19.1 17.1 112 DIVIDE PEAK 8880 15.7 18.0 87 25.3 24.3 104 ELK RIVER 8700 15.9 13.2 120 24.7 22.7 109 LITTLE SNAKE RIVER 8915 26.2 22.3 117 37.3 32.7 114 OLD BATTLE 10000 35.9 34.7 103 39.8 39.2 102 SAGE CREEK BASIN 7850 1.8 1.1 164* 14.0 16.1 87 SANDSTONE RS 8150 5.0 5.9 85 19.3 20.8 93 WHISKEY PARK 8950 37.9 26.5 143 43.2 31.5 137 ----- ----- Basin Index (%) 114 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.4 10.6 136 15.6 15.1 103 BLIND BULL SUM 8650 38.3 23.1 166 24.7 21.3 116 EAST RIM DIVIDE 7930 11.6 8.2 141 16.6 12.9 129 ELKHART PARK G.S. 9400 18.4 11.3 163 18.3 15.0 122 GROS VENTRE SUMMIT 8750 14.3 11.6 123 15.8 14.6 108 GUNSIGHT PASS 9820 20.7 12.5 166 20.6 16.0 129 KENDALL R.S. 7740 16.5 4.3 384 23.8 15.5 154 LOOMIS PARK 8240 22.9 11.0 208 26.3 18.9 139 NEW FORK LAKE 8340 12.1 6.5 186 14.0 12.1 116 POCKET CREEK 9360 12.5 -M * 13.5 -M * SNIDER BASIN 8060 12.8 9.4 136 20.4 15.6 131 SPRING CREEK DIVIDE 9000 38.4 24.3 158 34.6 26.2 132 TRIPLE PEAK 8500 32.7 17.5 187 39.2 27.9 141 ----- ----- Basin Index (%) 168 128 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.8 -M * 15.3 -M * BUCK PASTURE 9700 12.2 -M * 19.8 -M * EF BLACKS FORK GS 9360 6.1 -M * 11.6 -M * HAMS FORK 7840 9.2 2.9 317 15.0 13.1 115 HEWINTA 9519 6.9 4.8 144 16.3 16.1 101 HICKERSON PARK 9145 .0 4.2 0 9.5 12.0 79 HOLE-IN-ROCK 9150 .0 2.5 0 11.0 11.4 96 INDIAN CREEK 9425 32.7 23.0 142 28.4 25.0 114 KELLEY R.S. 8180 15.7 11.5 137 21.7 20.2 107 SPIRIT LK 10235 8.9 -M * 15.7 -M * STEEL CREEK PARK 10200 21.8 17.1 127 18.7 19.1 98 ----- ----- Basin Index (%) 131 103 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.3 -M * BUG LAKE 7950 20.0 15.1 132 22.2 21.7 102 BURTS MILLER RANCH 8000 .0 -M * 7.8 -M * CHALK CREEK #1 8993 20.8 24.2 86 26.0 28.4 92 HAYDEN FORK 9212 10.0 9.3 108 24.1 23.8 101 KELLEY R.S. 8180 15.7 11.5 137 21.7 20.2 107 LILY LAKE 9156 10.8 9.9 109 17.5 19.5 90 MONTE CRISTO 8960 24.2 26.5 91 28.1 29.2 96 SALT RIVER SUMMIT 7760 13.9 7.9 176 20.7 18.4 112 ----- ----- Basin Index (%) 111 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.