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 FRIDAY: AUGUST 19 , 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* 40.1 31.1 129 COTTONWOOD CREEK 7670 .0 .0 100* 57.0 40.0 143 GRAND TARGHEE 9260 .0 -M * 63.3 -M * GRANITE CREEK 6770 .0 .0 100* 39.3 28.7 137 GRASSY LAKE 7265 .0 .0 100* 65.9 50.6 130 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.3 119 GUNSIGHT PASS 9820 .0 -M * 32.6 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.2 50.6 117 PHILLIPS BENCH 8200 .1 .0 * 53.0 41.1 129 SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 27.3 122 SNAKE RIVER STATION 6920 .0 .0 100* 44.4 33.0 135 SPRING CREEK DIVIDE 9000 -M .0 * -M 36.8 * THUMB DIVIDE 7980 .1 .0 * 35.8 28.6 125 TOGWOTEE PASS 9580 .0 .0 100* 50.0 37.9 132 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.2 121 WILLOW CREEK 8380 .0 .0 100* 65.7 48.2 136 ----- ----- Basin wide percent of average * 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100* 41.6 32.8 127 BLACK BEAR 8170 .0 .0 100* 73.1 56.4 130 CANYON 7870 .0 .0 100* 29.8 25.3 118 FISHER CREEK 9100 .0 .0 100* 61.3 54.5 112 MADISON PLATEAU 7750 .0 .0 100* 52.1 39.3 133 NORTHEAST ENTRANCE 7350 .0 .0 100* 27.5 23.3 118 PARKER PEAK 9400 .0 .0 100* -M 28.6 * SYLVAN LAKE 8420 .0 .0 100* 47.8 34.9 137 THUMB DIVIDE 7980 .1 .0 * 35.8 28.6 125 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.2 121 WHISKEY CREEK 6800 .0 .0 100* 40.8 32.3 126 WHITE MILL 8700 .0 .0 100* 44.6 42.1 106 WOLVERINE 7650 -M .0 * 26.4 23.3 113 ----- ----- Basin wide percent of average * 122 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 31.4 27.2 115 CASTLE CREEK 8400 .1 -M * 16.6 -M * COLD SPRINGS 9630 .0 .0 100* 22.7 21.6 105 DEER PARK 9700 -M .0 * 37.0 35.6 104 HOBBS PARK 10100 .0 .0 100* 30.2 25.9 117 LITTLE WARM 9370 .0 .0 100* 27.3 24.8 110 SOUTH PASS 9040 .1 .0 * 27.1 29.9 91 ST. LAWRENCE ALT 8620 .0 .0 100* 21.8 19.6 111 TOGWOTEE PASS 9580 .0 .0 100* 50.0 37.9 132 TOWNSEND CREEK 8700 .0 .0 100* 24.1 23.0 105 ----- ----- Basin wide percent of average * 111 BIGHORN BASIN BALD MTN. 9380 -M .0 * 38.1 31.1 123 BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.0 116 BLACKWATER 9780 .0 .0 100* 43.7 35.5 123 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 28.8 123 EVENING STAR 9200 1.4 .0 * -M 41.3 * GRAVE SPRINGS 8550 .1 .0 * 24.1 21.0 115 KIRWIN 9550 .0 .0 100* 26.7 24.1 111 MARQUETTE 8760 .0 -M * 22.1 24.3 91 MIDDLE POWDER 7760 .0 .0 100* 25.4 23.9 106 OWL CREEK 8975 .0 .0 100* 16.4 15.9 103 POWDER RIVER PASS 9480 .0 .0 100* 33.5 24.9 135 SHELL CREEK 9580 .0 .0 100* 33.6 26.6 126 SYLVAN LAKE 8420 .0 .0 100* 47.8 34.9 137 SYLVAN ROAD 7120 .1 .0 * 35.5 28.0 127 TIMBER CREEK 7950 .0 .0 100* 18.6 19.3 96 YOUNTS PEAK 8350 .0 .0 100* 29.5 28.0 105 ----- ----- Basin wide percent of average * 117 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 43.7 35.5 123 EVENING STAR 9200 1.4 .0 * -M 41.3 * KIRWIN 9550 .0 .0 100* 26.7 24.1 111 MARQUETTE 8760 .0 -M * 22.1 24.3 91 SYLVAN LAKE 8420 .0 .0 100* 47.8 34.9 137 SYLVAN ROAD 7120 .1 .0 * 35.5 28.0 127 YOUNTS PEAK 8350 .0 .0 100* 29.5 28.0 105 ----- ----- Basin wide percent of average * 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.0 116 BIG GOOSE 7990 .0 .0 100* 27.9 20.0 140 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 28.8 123 BURGESS JUNCTION 7880 .0 .0 100* 30.4 24.2 126 CLOUD PEAK RESERVOIR 9860 .1 .0 * 34.7 28.1 123 DOME LAKE 8880 .0 .0 100* 31.1 26.1 119 GRAVE SPRINGS 8550 .1 .0 * 24.1 21.0 115 HANSEN SAWMILL 8360 .0 .0 100* 24.0 19.8 121 LITTLE GOOSE 8870 .0 -M * 31.9 -M * MIDDLE POWDER 7760 .0 .0 100* 25.4 23.9 106 POWDER RIVER PASS 9480 .0 .0 100* 33.5 24.9 135 SOLDIER PARK 8720 -M -M * 24.0 -M * SUCKER CREEK 8880 -M .0 * 35.7 27.4 130 TIE CREEK 6870 .0 .0 100* 29.3 22.4 131 ----- ----- Basin wide percent of average * 124 BELLE FOURCHE BLIND PARK 6890 .1 .0 * 32.3 24.9 130 COLE CANYON 5910 .1 .0 * 31.0 20.5 151 NORTH RAPID CREEK 6130 .1 .0 * 31.1 23.5 132 ----- ----- Basin wide percent of average * 137 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .0 -M * 62.6 -M * CINNABAR PARK 9574 .0 .0 100* 50.9 30.9 165 COLUMBINE 9160 .1 .0 * 52.7 36.0 146 DIVIDE PEAK 8880 .0 .0 100* 44.2 31.1 142 ELK RIVER 8700 .0 .0 100* 41.1 30.0 137 JOE WRIGHT 10120 .1 .0 * 60.5 41.3 146 NORTH FRENCH CREEK 10130 -M .0 * -M 39.8 * OLD BATTLE 10000 .0 .0 100* 70.4 48.6 145 SAGE CREEK BASIN 7850 .0 .0 100* 28.3 18.0 157 SOUTH BRUSH CREEK 8440 .0 .0 100* 36.4 28.3 129 TOWER 10500 .1 .0 * 90.1 55.2 163 WEBBER SPRINGS 9250 .0 .0 100* 53.4 38.8 138 WILLOW CREEK PASS 9540 .1 .0 * 35.4 24.0 148 ----- ----- Basin wide percent of average * 147 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 49.8 36.0 138 CASPER MTN. 7900 .0 .0 100* 27.5 28.3 97 DEADMAN HILL 10220 .0 .0 100* 38.0 29.1 131 DEER PARK 9700 -M .0 * 37.0 35.6 104 LAPRELE CREEK 8375 .0 .0 100* 25.5 25.3 101 RENO HILL 8400 .0 .0 100* 30.8 29.1 106 ROACH 9700 .0 .0 100* 39.8 31.1 128 SAND LAKE 10050 .0 .0 100* 57.1 39.4 145 SOUTH PASS 9040 .1 .0 * 27.1 29.9 91 WINDY PEAK 7900 .0 .0 100* 22.6 21.9 103 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * -M 23.7 * DIVIDE PEAK 8880 .0 .0 100* 44.2 31.1 142 OLD BATTLE 10000 .0 .0 100* 70.4 48.6 145 SANDSTONE RS 8150 1.7 .0 * 42.3 28.5 148 WHISKEY PARK 8950 .0 .0 100* 64.6 42.4 152 ----- ----- Basin wide percent of average * 147 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100* 27.0 22.5 120 BLIND BULL SUM 8650 .0 .0 100* 37.3 32.0 117 EAST RIM DIVIDE 7930 .2 .0 * 24.0 19.3 124 ELKHART PARK G.S. 9400 .0 .0 100* 23.9 23.3 103 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.3 119 GUNSIGHT PASS 9820 .0 -M * 32.6 -M * KENDALL R.S. 7740 .0 .0 100* 24.9 22.0 113 LOOMIS PARK 8240 .1 .0 * 34.1 26.3 130 NEW FORK LAKE 8340 .2 .0 * 19.4 19.7 98 POCKET CREEK 9360 .0 -M * 25.2 -M * SNIDER BASIN 8060 .0 .0 100* 28.8 23.1 125 SPRING CREEK DIVIDE 9000 -M .0 * -M 36.8 * TRIPLE PEAK 8500 .0 .0 100* 52.1 36.1 144 ----- ----- Basin wide percent of average * 121 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 * 25.6 20.2 127 HEWINTA 9519 .0 .0 100* -M 25.0 * HICKERSON PARK 9145 .0 .0 100* -M 16.9 * HOLE-IN-ROCK 9150 .3 .0 * -M 16.8 * INDIAN CREEK 9425 .0 .0 100* 41.7 35.9 116 KELLEY R.S. 8180 .0 .0 100* 37.1 29.4 126 STEEL CREEK PARK 10200 .0 .0 100* -M 28.1 * ----- ----- Basin wide percent of average * 122* UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 45.3 28.1 161 HAYDEN FORK 9212 .0 .0 100* 47.9 32.7 146 KELLEY R.S. 8180 .0 .0 100* 37.1 29.4 126 LILY LAKE 9156 .0 .0 100* -M 28.1 * MONTE CRISTO 8960 .0 .0 100* 58.1 37.4 155 SALT RIVER SUMMIT 7760 .0 .0 100* 33.2 27.3 122 TRIAL LAKE 9992 .1 .0 * 52.9 38.5 137 ----- ----- 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.