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 TUESDAY: AUGUST 16 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 100* 40.2 30.9 130 COTTONWOOD CREEK 7670 .0 .0 100* 57.0 39.9 143 GRAND TARGHEE 9260 .0 -M * 63.3 -M * GRANITE CREEK 6770 .0 .0 100* 39.1 28.6 137 GRASSY LAKE 7265 .0 .0 100* 65.9 50.4 131 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.2 120 GUNSIGHT PASS 9820 .0 -M * 32.3 -M * LEWIS LAKE DIVIDE 7850 .1 .0 * 59.2 50.4 117 PHILLIPS BENCH 8200 .0 .0 100* 52.9 41.0 129 SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 27.2 122 SNAKE RIVER STATION 6920 .0 .0 100* 44.4 32.9 135 SPRING CREEK DIVIDE 9000 -M .0 * -M 36.7 * THUMB DIVIDE 7980 .1 .0 * 35.8 28.5 126 TOGWOTEE PASS 9580 .0 .0 100* 50.1 37.7 133 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.0 122 WILLOW CREEK 8380 .0 .0 100* 65.7 48.0 137 ----- ----- Basin wide percent of average * 130 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100* 41.7 32.6 128 BLACK BEAR 8170 .0 .0 100* 73.1 56.3 130 CANYON 7870 .0 .0 100* 29.6 25.1 118 FISHER CREEK 9100 .0 .0 100* 61.1 54.3 113 MADISON PLATEAU 7750 .0 .0 100* 52.1 39.2 133 NORTHEAST ENTRANCE 7350 .0 .0 100* 27.5 23.2 119 PARKER PEAK 9400 .0 .0 100* 45.7 28.5 160 SYLVAN LAKE 8420 .0 .0 100* 47.8 34.8 137 THUMB DIVIDE 7980 .1 .0 * 35.8 28.5 126 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.0 122 WHISKEY CREEK 6800 .0 .0 100* 40.6 32.2 126 WHITE MILL 8700 .0 .0 100* 44.4 41.9 106 WOLVERINE 7650 -M .0 * 26.4 23.1 114 ----- ----- Basin wide percent of average * 125 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 31.1 27.0 115 CASTLE CREEK 8400 .1 -M * 16.6 -M * COLD SPRINGS 9630 .0 .0 100* 22.2 21.5 103 DEER PARK 9700 .0 .0 100* 36.9 35.5 104 HOBBS PARK 10100 .0 .0 100* 30.0 25.8 116 LITTLE WARM 9370 .0 .0 100* 27.0 24.7 109 SOUTH PASS 9040 .1 .0 * 26.9 29.8 90 ST. LAWRENCE ALT 8620 .0 .0 100* 21.9 19.5 112 TOGWOTEE PASS 9580 .0 .0 100* 50.1 37.7 133 TOWNSEND CREEK 8700 .0 .0 100* 24.0 22.9 105 ----- ----- Basin wide percent of average * 111 BIGHORN BASIN BALD MTN. 9380 -M .0 * 38.1 31.0 123 BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.9 117 BLACKWATER 9780 .0 .0 100* 43.5 35.4 123 BONE SPRINGS DIV 9350 .0 .0 100* 34.9 28.7 122 EVENING STAR 9200 .1 .0 * 57.9 41.2 141 GRAVE SPRINGS 8550 .2 .0 * 24.1 21.0 115 KIRWIN 9550 .0 .0 100* 26.5 24.0 110 MARQUETTE 8760 .0 -M * 21.6 24.1 90 MIDDLE POWDER 7760 .1 .0 * 25.4 23.9 106 OWL CREEK 8975 .0 .0 100* 16.3 15.8 103 POWDER RIVER PASS 9480 .0 .0 100* 33.4 24.8 135 SHELL CREEK 9580 .0 .0 100* 33.4 26.5 126 SYLVAN LAKE 8420 .0 .0 100* 47.8 34.8 137 SYLVAN ROAD 7120 .1 .0 * 35.3 27.9 127 TIMBER CREEK 7950 .0 .0 100* 18.6 19.2 97 YOUNTS PEAK 8350 .0 .0 100* 29.6 27.9 106 ----- ----- Basin wide percent of average * 120 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 43.5 35.4 123 EVENING STAR 9200 .1 .0 * 57.9 41.2 141 KIRWIN 9550 .0 .0 100* 26.5 24.0 110 MARQUETTE 8760 .0 -M * 21.6 24.1 90 SYLVAN LAKE 8420 .0 .0 100* 47.8 34.8 137 SYLVAN ROAD 7120 .1 .0 * 35.3 27.9 127 YOUNTS PEAK 8350 .0 .0 100* 29.6 27.9 106 ----- ----- Basin wide percent of average * 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100* 22.1 18.9 117 BIG GOOSE 7990 .0 .0 100* 27.8 20.0 139 BONE SPRINGS DIV 9350 .0 .0 100* 34.9 28.7 122 BURGESS JUNCTION 7880 .0 .0 100* 30.4 24.1 126 CLOUD PEAK RESERVOIR 9860 .1 .0 * 34.6 28.0 124 DOME LAKE 8880 .0 .0 100* 30.8 26.0 118 GRAVE SPRINGS 8550 .2 .0 * 24.1 21.0 115 HANSEN SAWMILL 8360 .0 .0 100* 23.9 19.7 121 LITTLE GOOSE 8870 .0 -M * 31.9 -M * MIDDLE POWDER 7760 .1 .0 * 25.4 23.9 106 POWDER RIVER PASS 9480 .0 .0 100* 33.4 24.8 135 SOLDIER PARK 8720 -M -M * 24.0 -M * SUCKER CREEK 8880 -M .0 * 35.3 27.3 129 TIE CREEK 6870 .0 .0 100* 29.3 22.3 131 ----- ----- Basin wide percent of average * 124 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 32.3 24.8 130 COLE CANYON 5910 .1 .0 * 31.0 20.4 152 NORTH RAPID CREEK 6130 .1 .0 * 31.1 23.3 133 ----- ----- Basin wide percent of average * 138 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .0 -M * 62.4 -M * CINNABAR PARK 9574 .0 .0 100* 50.8 30.7 165 COLUMBINE 9160 .0 .0 100* 52.1 35.9 145 DIVIDE PEAK 8880 .0 .0 100* 44.1 31.0 142 ELK RIVER 8700 .0 .0 100* 41.2 29.9 138 JOE WRIGHT 10120 .0 .0 100* 60.5 41.0 148 NORTH FRENCH CREEK 10130 -M .0 * -M 39.7 * OLD BATTLE 10000 .0 .0 100* 70.4 48.4 145 SAGE CREEK BASIN 7850 .0 .0 100* 28.3 18.0 157 SOUTH BRUSH CREEK 8440 .0 .0 100* 36.5 28.2 129 TOWER 10500 -M .0 * 90.0 55.0 164 WEBBER SPRINGS 9250 .0 .0 100* 53.4 38.7 138 WILLOW CREEK PASS 9540 .0 .0 100* 35.3 23.9 148 ----- ----- Basin wide percent of average * 148 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 49.5 35.9 138 CASPER MTN. 7900 .0 .0 100* 27.6 28.2 98 DEADMAN HILL 10220 .0 .0 100* 37.9 29.0 131 DEER PARK 9700 .0 .0 100* 36.9 35.5 104 LAPRELE CREEK 8375 .0 .0 100* 25.5 25.1 102 RENO HILL 8400 .0 .0 100* 30.9 29.0 107 ROACH 9700 .1 .0 * 39.6 31.0 128 SAND LAKE 10050 .0 .0 100* 57.1 39.2 146 SOUTH PASS 9040 .1 .0 * 26.9 29.8 90 WINDY PEAK 7900 .0 .0 100* 22.6 21.8 104 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * -M 23.6 * DIVIDE PEAK 8880 .0 .0 100* 44.1 31.0 142 OLD BATTLE 10000 .0 .0 100* 70.4 48.4 145 SANDSTONE RS 8150 -M .0 * 42.1 28.3 149 WHISKEY PARK 8950 .0 .0 100* 64.6 42.3 153 ----- ----- Basin wide percent of average * 147 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100* 27.0 22.4 121 BLIND BULL SUM 8650 .0 .0 100* 37.3 31.9 117 EAST RIM DIVIDE 7930 .3 .0 * 23.9 19.2 124 ELKHART PARK G.S. 9400 .0 .0 100* 23.9 23.1 103 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.2 120 GUNSIGHT PASS 9820 .0 -M * 32.3 -M * KENDALL R.S. 7740 .0 .0 100* 24.9 21.9 114 LOOMIS PARK 8240 .1 .0 * 34.1 26.1 131 NEW FORK LAKE 8340 .1 .0 * 19.2 19.6 98 POCKET CREEK 9360 .0 -M * 25.2 -M * SNIDER BASIN 8060 .0 .0 100* 28.8 23.0 125 SPRING CREEK DIVIDE 9000 -M .0 * -M 36.7 * TRIPLE PEAK 8500 .0 .0 100* 51.4 35.9 143 ----- ----- Basin wide percent of average * 121 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 * 25.6 20.1 127 HEWINTA 9519 .0 .0 100* 33.3 24.8 134 HICKERSON PARK 9145 .0 .0 100* 23.3 16.7 140 HOLE-IN-ROCK 9150 .3 .0 * 25.6 16.6 154 INDIAN CREEK 9425 .0 .0 100* 41.6 35.8 116 KELLEY R.S. 8180 .0 .0 100* 37.1 29.3 127 STEEL CREEK PARK 10200 .0 .0 100* 37.7 27.9 135 ----- ----- Basin wide percent of average * 131 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 45.4 28.0 162 HAYDEN FORK 9212 .0 .0 100* 48.0 32.6 147 KELLEY R.S. 8180 .0 .0 100* 37.1 29.3 127 LILY LAKE 9156 .0 .0 100* 38.1 27.9 137 MONTE CRISTO 8960 .2 .0 * 58.2 37.3 156 SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 27.2 122 TRIAL LAKE 9992 .1 .0 * 53.0 38.3 138 ----- ----- Basin wide percent of average * 142 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average 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 Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average 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. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -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.