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 MONDAY: AUGUST 29 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .0 * 40.1 31.5 127 COTTONWOOD CREEK 7670 .0 .0 100* 57.4 40.6 141 GRAND TARGHEE 9260 .0 -M * 64.1 -M * GRANITE CREEK 6770 .0 .0 100* 39.4 29.0 136 GRASSY LAKE 7265 .0 .0 100* 66.0 51.2 129 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.8 117 GUNSIGHT PASS 9820 .0 -M * 32.6 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.4 51.1 116 PHILLIPS BENCH 8200 .1 .0 * 53.3 41.7 128 SALT RIVER SUMMIT 7760 .1 .0 * 34.2 27.8 123 SNAKE RIVER STATION 6920 .0 .0 100* 44.5 33.4 133 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.4 * THUMB DIVIDE 7980 .1 .0 * 36.0 28.9 125 TOGWOTEE PASS 9580 .0 .0 100* 50.9 38.4 133 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.7 120 WILLOW CREEK 8380 .1 .0 * 66.0 48.9 135 ----- ----- Basin wide percent of average * 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100* 42.6 33.3 128 BLACK BEAR 8170 .0 .0 100* 73.2 57.1 128 CANYON 7870 .0 .0 100* 29.9 25.8 116 FISHER CREEK 9100 .0 .0 100* 61.5 55.3 111 MADISON PLATEAU 7750 .0 .0 100* 52.3 39.9 131 NORTHEAST ENTRANCE 7350 .0 .0 100* 27.6 23.9 115 PARKER PEAK 9400 .0 .0 100* 46.4 29.1 159 SYLVAN LAKE 8420 .0 .0 100* 47.9 35.3 136 THUMB DIVIDE 7980 .1 .0 * 36.0 28.9 125 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.7 120 WHISKEY CREEK 6800 .0 .0 100* 40.7 32.9 124 WHITE MILL 8700 .0 .0 100* 44.8 42.8 105 WOLVERINE 7650 .0 .0 100* 27.1 23.8 114 ----- ----- Basin wide percent of average * 123 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 31.6 27.7 114 CASTLE CREEK 8400 .0 -M * 17.1 -M * COLD SPRINGS 9630 .0 .0 100* 22.8 21.9 104 DEER PARK 9700 .0 .0 100* 37.8 36.0 105 HOBBS PARK 10100 .0 .0 100* 30.9 26.4 117 LITTLE WARM 9370 .0 .0 100* 27.4 25.2 109 SOUTH PASS 9040 .1 .0 * 28.5 30.3 94 ST. LAWRENCE ALT 8620 .0 .0 100* 22.5 19.9 113 TOGWOTEE PASS 9580 .0 .0 100* 50.9 38.4 133 TOWNSEND CREEK 8700 .0 .0 100* 25.3 23.4 108 ----- ----- Basin wide percent of average * 111 BIGHORN BASIN BALD MTN. 9380 .0 .0 100* 38.3 31.5 122 BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.3 114 BLACKWATER 9780 .0 .0 100* 44.7 36.0 124 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 29.3 120 EVENING STAR 9200 .0 .0 100* 58.0 41.8 139 GRAVE SPRINGS 8550 .0 .0 100* 24.2 21.2 114 KIRWIN 9550 .0 .0 100* 27.0 24.6 110 MARQUETTE 8760 .0 -M * 22.0 24.7 89 MIDDLE POWDER 7760 .0 .0 100* 25.5 24.2 105 OWL CREEK 8975 .0 .0 100* 16.4 16.2 101 POWDER RIVER PASS 9480 .0 .0 100* 33.8 25.3 134 SHELL CREEK 9580 .0 .0 100* 33.9 27.0 126 SYLVAN LAKE 8420 .0 .0 100* 47.9 35.3 136 SYLVAN ROAD 7120 .0 .0 100* 35.5 28.5 125 TIMBER CREEK 7950 .0 .0 100* 18.9 19.8 95 YOUNTS PEAK 8350 .0 .0 100* 29.8 28.7 104 ----- ----- Basin wide percent of average * 118 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 44.7 36.0 124 EVENING STAR 9200 .0 .0 100* 58.0 41.8 139 KIRWIN 9550 .0 .0 100* 27.0 24.6 110 MARQUETTE 8760 .0 -M * 22.0 24.7 89 SYLVAN LAKE 8420 .0 .0 100* 47.9 35.3 136 SYLVAN ROAD 7120 .0 .0 100* 35.5 28.5 125 YOUNTS PEAK 8350 .0 .0 100* 29.8 28.7 104 ----- ----- Basin wide percent of average * 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.3 114 BIG GOOSE 7990 .0 .0 100* 28.2 20.8 136 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 29.3 120 BURGESS JUNCTION 7880 .0 .0 100* 30.5 24.5 124 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.3 28.6 123 DOME LAKE 8880 .0 .0 100* 31.3 26.5 118 GRAVE SPRINGS 8550 .0 .0 100* 24.2 21.2 114 HANSEN SAWMILL 8360 .0 .0 100* 24.3 20.2 120 LITTLE GOOSE 8870 .0 -M * 32.3 -M * MIDDLE POWDER 7760 .0 .0 100* 25.5 24.2 105 POWDER RIVER PASS 9480 .0 .0 100* 33.8 25.3 134 SOLDIER PARK 8720 .0 -M * 24.4 -M * SUCKER CREEK 8880 .0 .0 100* 36.0 27.8 129 TIE CREEK 6870 .0 .0 100* 29.4 23.0 128 ----- ----- Basin wide percent of average * 122 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 32.3 25.4 127 COLE CANYON 5910 .0 .0 100* 31.1 21.1 147 NORTH RAPID CREEK 6130 .0 .0 100* 31.1 24.0 130 ----- ----- Basin wide percent of average * 134 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .0 -M * 63.1 -M * CINNABAR PARK 9574 .1 .0 * 51.5 31.5 163 COLUMBINE 9160 .1 .0 * 52.8 36.4 145 DIVIDE PEAK 8880 .0 .0 100* 44.1 31.5 140 ELK RIVER 8700 .0 .0 100* 41.5 30.6 136 JOE WRIGHT 10120 .0 .0 100* 61.5 42.0 146 NORTH FRENCH CREEK 10130 .0 .0 100* 80.6 40.4 200 OLD BATTLE 10000 .0 .0 100* 71.8 49.1 146 SAGE CREEK BASIN 7850 .0 .0 100* 28.3 18.3 155 SOUTH BRUSH CREEK 8440 .0 .0 100* 37.2 28.8 129 TOWER 10500 .0 .0 100* 90.3 55.8 162 WEBBER SPRINGS 9250 .1 .0 * 54.8 39.3 139 WILLOW CREEK PASS 9540 .1 .0 * 35.6 24.6 145 ----- ----- Basin wide percent of average * 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 49.9 36.5 137 CASPER MTN. 7900 .0 .0 100* 27.3 28.6 95 DEADMAN HILL 10220 .0 .0 100* 38.6 29.6 130 DEER PARK 9700 .0 .0 100* 37.8 36.0 105 LAPRELE CREEK 8375 .0 .0 100* 25.6 25.9 99 RENO HILL 8400 .0 .0 100* 30.7 29.6 104 ROACH 9700 .1 .0 * 40.5 31.6 128 SAND LAKE 10050 .0 .0 100* 57.7 39.8 145 SOUTH PASS 9040 .1 .0 * 28.5 30.3 94 WINDY PEAK 7900 .0 .0 100* 22.8 22.3 102 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 30.1 24.0 125 DIVIDE PEAK 8880 .0 .0 100* 44.1 31.5 140 OLD BATTLE 10000 .0 .0 100* 71.8 49.1 146 SANDSTONE RS 8150 .1 .0 * 42.4 29.0 146 WHISKEY PARK 8950 .0 .0 100* 64.8 42.8 151 ----- ----- Basin wide percent of average * 144 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100* 27.8 23.0 121 BLIND BULL SUM 8650 .0 .0 100* 37.6 32.5 116 EAST RIM DIVIDE 7930 .0 .0 100* 24.5 19.7 124 ELKHART PARK G.S. 9400 .0 .0 100* 24.7 24.0 103 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.8 117 GUNSIGHT PASS 9820 .0 -M * 32.6 -M * KENDALL R.S. 7740 .0 .0 100* 24.9 22.4 111 LOOMIS PARK 8240 .0 .0 100* 34.3 26.9 128 NEW FORK LAKE 8340 .0 .0 100* 19.5 20.2 97 POCKET CREEK 9360 .0 -M * 26.1 -M * SNIDER BASIN 8060 .0 .0 100* 29.3 23.5 125 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.4 * TRIPLE PEAK 8500 .0 .0 100* 52.1 36.6 142 ----- ----- Basin wide percent of average * 120 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 25.6 20.5 125 HEWINTA 9519 .0 .0 100* 34.3 25.6 134 HICKERSON PARK 9145 .0 .0 100* 24.9 17.6 141 HOLE-IN-ROCK 9150 .3 .0 * 27.0 17.5 154 INDIAN CREEK 9425 .0 .0 100* 41.8 36.4 115 KELLEY R.S. 8180 .0 .0 100* 37.4 29.8 126 STEEL CREEK PARK 10200 .0 .0 100* 38.8 28.7 135 ----- ----- Basin wide percent of average * 130 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 45.4 28.5 159 HAYDEN FORK 9212 .0 .0 100* 48.3 33.3 145 KELLEY R.S. 8180 .0 .0 100* 37.4 29.8 126 LILY LAKE 9156 .0 .0 100* 39.6 28.7 138 MONTE CRISTO 8960 .0 .0 100* 58.4 37.9 154 SALT RIVER SUMMIT 7760 .1 .0 * 34.2 27.8 123 TRIAL LAKE 9992 .2 .0 * 53.3 39.2 136 ----- ----- Basin wide percent of average * 141 ----------------------------------------------------------------------------- -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.