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 SATURDAY: MAY 3 , 2014 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 15.8 8.4 188 28.8 22.9 126 BLACK BEAR 8170 45.8 37.3 123 45.7 42.0 109 BLIND BULL SUM 8650 37.6 22.9 164 24.7 21.5 115 COTTONWOOD CREEK 7670 24.7 14.7 168 37.2 27.7 134 EAST RIM DIVIDE 7930 8.9 7.9 113 16.6 13.0 128 GRAND TARGHEE 9260 53.9 45.5 118 -M 34.9 * GRANITE CREEK 6770 17.9 7.8 229 26.2 21.5 122 GRASSY LAKE 7265 38.4 28.3 136 44.1 39.5 112 GROS VENTRE SUMMIT 8750 13.9 11.3 123 15.8 14.8 107 GUNSIGHT PASS 9820 20.5 12.1 169 20.8 16.2 128 LEWIS LAKE DIVIDE 7850 41.9 29.7 141 44.1 38.8 114 PHILLIPS BENCH 8200 36.5 24.8 147 38.4 30.9 124 SALT RIVER SUMMIT 7760 11.6 7.6 153 20.8 18.5 112 SNAKE RIVER STATION 6920 11.8 6.2 190 28.4 24.9 114 SPRING CREEK DIVIDE 9000 38.0 24.3 156 34.6 26.4 131 THUMB DIVIDE 7980 18.4 11.3 163 22.1 21.1 105 TOGWOTEE PASS 9580 34.1 24.7 138 36.1 27.5 131 TWO OCEAN PLATEAU 9240 39.4 29.9 132 37.7 30.3 124 WILLOW CREEK 8380 38.1 22.3 171 44.7 37.8 118 YOUNTS PEAK 8350 -M 15.7 * -M 17.8 * ----- ----- Basin Index (%) 145 119 MADISON-GALLATIN BLACK BEAR 8170 45.8 37.3 123 45.7 42.0 109 CANYON 7870 14.8 9.6 154 19.2 18.1 106 MADISON PLATEAU 7750 26.4 21.0 126 29.0 29.1 100 WEST YELLOWSTONE 6700 1.2 .6 200* 18.6 16.0 116 WHISKEY CREEK 6800 16.8 13.8 122 24.7 22.5 110 ----- ----- Basin Index (%) 128 107 YELLOWSTONE BEARTOOTH LAKE 9360 33.2 22.7 146 33.4 22.1 151 BURNT MTN 5880 2.7 .0 * 23.1 16.1 143 CANYON 7870 14.8 9.6 154 19.2 18.1 106 COLE CREEK 7850 24.0 16.7 144 19.4 16.6 117 EVENING STAR 9200 42.1 24.8 170 45.0 30.6 147 FISHER CREEK 9100 48.6 32.6 149 44.5 35.4 126 NORTHEAST ENTRANCE 7350 9.2 2.0 460 18.0 13.9 129 PARKER PEAK 9400 38.0 21.2 179 33.7 20.2 167 SYLVAN LAKE 8420 24.8 19.3 128 33.4 25.2 133 THUMB DIVIDE 7980 18.4 11.3 163 22.1 21.1 105 TWO OCEAN PLATEAU 9240 39.4 29.9 132 37.7 30.3 124 WHITE MILL 8700 35.8 23.9 150 32.9 26.5 124 WOLVERINE 7650 12.0 1.4 857 20.2 13.9 145 ----- ----- Basin Index (%) 159 132 WIND RIVER BURROUGHS CREEK 8750 -M 12.8 * -M 18.1 * CASTLE CREEK 8400 4.0 -M * 13.3 -M * COLD SPRINGS 9630 4.9 1.3 377 14.0 12.6 111 DEER PARK 9700 -M 15.7 * 21.8 23.6 92 HOBBS PARK 10100 14.9 16.0 93 15.9 16.9 94 KIRWIN 9550 19.6 10.6 185 20.0 14.0 143 LITTLE WARM 9370 12.2 8.4 145 18.5 15.5 119 OWL CREEK 8975 .4 .7 57 8.8 8.1 109 SOUTH PASS 9040 14.2 14.4 99 17.0 20.5 83 ST. LAWRENCE ALT 8620 .3 2.1 14 10.7 11.7 91 TOGWOTEE PASS 9580 34.1 24.7 138 36.1 27.5 131 TOWNSEND CREEK 8700 4.3 6.9 62 11.3 15.1 75 ----- ----- Basin Index (%) 123 105 BIGHORN BASIN BALD MTN. 9380 30.0 20.5 146 23.4 19.9 118 BEAR TRAP MEADOW 8200 6.4 .6 1067 12.8 10.8 119 BONE SPRINGS DIV 9350 23.0 16.4 140 20.5 18.4 111 GRAVE SPRINGS 8550 12.8 9.4 136 14.5 13.0 112 KIRWIN 9550 19.6 10.6 185 20.0 14.0 143 MARQUETTE 8760 15.4 -M * 15.6 -M * MIDDLE POWDER 7760 18.5 11.4 162 16.7 14.3 117 OWL CREEK 8975 .4 .7 57 8.8 8.1 109 POWDER RIVER PASS 9480 13.8 9.1 152 18.7 15.2 123 SHELL CREEK 9580 20.4 16.0 128 19.5 16.5 118 TIMBER CREEK 7950 .3 2.7 11 11.1 10.2 109 ----- ----- Basin Index (%) 149 118 SHOSHONE RIVER BLACKWATER 9780 35.8 25.7 139 33.4 23.7 141 EVENING STAR 9200 42.1 24.8 170 45.0 30.6 147 MARQUETTE 8760 15.4 -M * 15.6 -M * SYLVAN ROAD 7120 5.0 4.6 109 24.5 18.7 131 YOUNTS PEAK 8350 -M 15.7 * -M 17.8 * ----- ----- Basin Index (%) 150 141 POWDER RIVER BEAR TRAP MEADOW 8200 6.4 .6 1067 12.8 10.8 119 CLOUD PEAK RESERVOIR 9860 24.2 16.4 148 23.1 16.9 137 GRAVE SPRINGS 8550 12.8 9.4 136 14.5 13.0 112 HANSEN SAWMILL 8360 7.2 1.8 400 14.5 11.0 132 MIDDLE POWDER 7760 18.5 11.4 162 16.7 14.3 117 POWDER RIVER PASS 9480 13.8 9.1 152 18.7 15.2 123 SOLDIER PARK 8720 11.6 -M * 14.5 -M * ----- ----- Basin Index (%) 170 124 TONGUE RIVER BIG GOOSE 7990 12.3 9.3 132 18.0 14.3 126 BONE SPRINGS DIV 9350 23.0 16.4 140 20.5 18.4 111 BURGESS JUNCTION 7880 18.0 11.8 153 19.6 15.0 131 DOME LAKE 8880 17.5 11.3 155 18.6 16.6 112 LITTLE GOOSE 8870 15.1 -M * 20.5 -M * SUCKER CREEK 8880 18.6 12.0 155 23.5 17.6 134 TIE CREEK 6870 6.4 2.5 256 18.1 14.6 124 ----- ----- Basin Index (%) 151 123 BELLE FOURCHE COLE CANYON 5910 3.5 .1 3500* 16.0 12.3 130 ----- ----- Basin Index (%) 3500* 130 CHEYENNE RIVER BASIN BLIND PARK 6890 1.9 .2 950* 19.3 14.6 132 NORTH RAPID CREEK 6130 3.1 .5 620* 18.7 12.6 148 ----- ----- Basin Index (%) 714* 140 UPPER N. PLATTE ARAPAHO RIDGE 10960 29.7 22.3 133 30.8 26.4 117 BLACKHALL MTN 9820 39.6 -M * -M -M * COLUMBINE 9160 29.8 17.5 170 -M 28.8 * DIVIDE PEAK 8880 14.8 17.8 83 25.5 24.6 104 JOE WRIGHT 10120 29.5 22.9 129 37.6 30.2 125 LAPRELE CREEK 8375 6.0 5.6 107 14.4 15.2 95 MED BOW 10500 -M -M * 44.9 -M * NORTH FRENCH CREEK 10130 40.3 32.8 123 39.6 31.0 128 NEVER SUMMER 10280 29.0 21.8 133 23.8 -M * OLD BATTLE 10000 35.8 34.7 103 40.2 39.5 102 RAWAH 9020 9.3 5.2 179 20.5 17.5 117 SAGE CREEK BASIN 7850 .3 1.0 30* 13.9 16.3 85 SAND LAKE 10050 37.2 31.5 118 37.1 29.3 127 SOUTH BRUSH CREEK 8440 7.9 8.4 94 18.4 18.1 102 TOWER 10500 54.7 50.4 109 56.0 45.1 124 WEBBER SPRINGS 9250 21.8 21.3 102 31.2 30.2 103 WILLOW CREEK PASS 9540 16.8 14.5 116 17.3 16.0 108 ZIRKEL 9340 37.7 20.8 181 -M 31.2 * ----- ----- Basin Index (%) 122 113 SWEETWATER DEER PARK 9700 -M 15.7 * 21.8 23.6 92 LARSEN CREEK 9000 6.2 8.6 72 16.6 -M * SOUTH PASS 9040 14.2 14.4 99 17.0 20.5 83 ----- ----- Basin Index (%) 89 88 LOWER N. PLATTE CASPER MTN. 7900 17.8 12.8 139 19.1 18.3 104 LAPRELE CREEK 8375 6.0 5.6 107 14.4 15.2 95 RENO HILL 8400 19.1 12.2 157 24.9 19.2 130 WINDY PEAK 7900 6.2 3.4 182 14.6 13.2 111 ----- ----- Basin Index (%) 144 111 LARAMIE RIVER BROOKLYN LAKE 10240 31.0 23.1 134 33.8 25.0 135 CINNABAR PARK 9574 24.0 19.0 126 32.4 27.3 119 CROW CREEK 8330 .5 .0 * 14.4 13.6 106 DEADMAN HILL 10220 27.6 19.2 144 27.1 20.9 130 RAWAH 9020 9.3 5.2 179 20.5 17.5 117 ROACH 9700 20.2 17.1 118 26.9 22.5 120 ----- ----- Basin Index (%) 135 122 S. PLATTE BLACK MOUNTAIN 8920 10.0 -M * -M -M * CROW CREEK 8330 .5 .0 * 14.4 13.6 106 DEADMAN HILL 10220 27.6 19.2 144 27.1 20.9 130 ----- ----- Basin Index (%) 146* 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.3 110 DIVIDE PEAK 8880 14.8 17.8 83 25.5 24.6 104 ELK RIVER 8700 15.1 12.5 121 24.9 23.0 108 LITTLE SNAKE RIVER 8915 25.4 21.8 117 37.3 33.1 113 OLD BATTLE 10000 35.8 34.7 103 40.2 39.5 102 SAGE CREEK BASIN 7850 .3 1.0 30* 13.9 16.3 85 SANDSTONE RS 8150 3.4 5.1 67 19.4 21.0 92 WHISKEY PARK 8950 37.6 26.8 140 43.1 31.8 136 ----- ----- Basin Index (%) 111 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 9.8 139 15.7 15.3 103 BLIND BULL SUM 8650 37.6 22.9 164 24.7 21.5 115 EAST RIM DIVIDE 7930 8.9 7.9 113 16.6 13.0 128 ELKHART PARK G.S. 9400 17.6 10.8 163 18.3 15.2 120 GROS VENTRE SUMMIT 8750 13.9 11.3 123 15.8 14.8 107 GUNSIGHT PASS 9820 20.5 12.1 169 20.8 16.2 128 KENDALL R.S. 7740 14.8 3.2 462 23.8 15.6 153 LOOMIS PARK 8240 19.8 10.5 189 26.3 19.1 138 NEW FORK LAKE 8340 10.4 6.0 173 14.0 12.3 114 POCKET CREEK 9360 12.4 -M * 13.6 -M * SNIDER BASIN 8060 11.2 8.9 126 20.5 15.7 131 SPRING CREEK DIVIDE 9000 38.0 24.3 156 34.6 26.4 131 TRIPLE PEAK 8500 31.1 16.7 186 39.3 28.1 140 ----- ----- Basin Index (%) 164 127 LOWER GREEN RIVER BLACKS FORK JCT 8870 2.4 -M * 15.2 -M * BUCK PASTURE 9700 11.3 -M * 19.7 -M * EF BLACKS FORK GS 9360 5.0 -M * 11.6 -M * HAMS FORK 7840 6.5 2.0 325 15.1 13.2 114 HEWINTA 9519 5.5 4.4 125 16.2 16.4 99 HICKERSON PARK 9145 .1 3.5 3 9.6 12.2 79 HOLE-IN-ROCK 9150 .0 2.0 0 11.1 11.6 96 INDIAN CREEK 9425 31.5 22.5 140 28.5 25.2 113 KELLEY R.S. 8180 13.9 10.8 129 21.8 20.3 107 SPIRIT LK 10235 7.7 -M * 15.8 -M * STEEL CREEK PARK 10200 21.5 17.4 124 18.6 19.3 96 ----- ----- Basin Index (%) 126 102 UPPER BEAR RIVER BEAR RIVER RS 8777 .0 -M * 14.3 -M * BUG LAKE 7950 18.7 14.2 132 22.3 21.8 102 BURTS MILLER RANCH 8000 .2 -M * 7.9 -M * CHALK CREEK #1 8993 19.9 23.8 84 25.9 28.7 90 HAYDEN FORK 9212 8.2 8.8 93 24.1 24.0 100 KELLEY R.S. 8180 13.9 10.8 129 21.8 20.3 107 LILY LAKE 9156 9.8 9.9 99 17.4 19.8 88 MONTE CRISTO 8960 22.8 25.8 88 28.1 29.5 95 SALT RIVER SUMMIT 7760 11.6 7.6 153 20.8 18.5 112 ----- ----- Basin Index (%) 104 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.