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: AUGUST 25 , 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 * 40.0 31.3 128 COTTONWOOD CREEK 7670 .0 .0 100* 56.9 40.4 141 GRAND TARGHEE 9260 .0 -M * 63.2 -M * GRANITE CREEK 6770 .0 .0 100* 39.2 28.9 136 GRASSY LAKE 7265 .0 .0 100* 66.0 50.9 130 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.6 118 GUNSIGHT PASS 9820 .0 -M * 32.5 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.3 50.9 117 PHILLIPS BENCH 8200 .1 .0 * 53.1 41.4 128 SALT RIVER SUMMIT 7760 .1 .0 * 33.4 27.6 121 SNAKE RIVER STATION 6920 .0 .0 100* 44.4 33.3 133 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.1 * THUMB DIVIDE 7980 .1 .0 * 35.8 28.8 124 TOGWOTEE PASS 9580 .0 .0 100* 50.0 38.2 131 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.5 120 WILLOW CREEK 8380 .1 .0 * 65.7 48.6 135 ----- ----- Basin wide percent of average * 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100* 41.6 33.0 126 BLACK BEAR 8170 .0 .0 100* 73.2 56.8 129 CANYON 7870 .0 .0 100* 29.9 25.6 117 FISHER CREEK 9100 .0 .0 100* 61.4 55.0 112 MADISON PLATEAU 7750 .0 .0 100* 52.2 39.7 131 NORTHEAST ENTRANCE 7350 .0 .0 100* 27.5 23.7 116 PARKER PEAK 9400 .0 .0 100* 46.2 28.9 160 SYLVAN LAKE 8420 .0 .0 100* 47.8 35.1 136 THUMB DIVIDE 7980 .1 .0 * 35.8 28.8 124 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.2 42.5 120 WHISKEY CREEK 6800 .0 .0 100* 40.6 32.6 125 WHITE MILL 8700 .0 .0 100* 44.8 42.5 105 WOLVERINE 7650 .0 .0 100* 26.4 23.5 112 ----- ----- Basin wide percent of average * 124 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 31.4 27.5 114 CASTLE CREEK 8400 .0 -M * 16.7 -M * COLD SPRINGS 9630 .0 .0 100* 22.7 21.8 104 DEER PARK 9700 .0 .0 100* 37.0 35.8 103 HOBBS PARK 10100 .0 .0 100* 30.2 26.2 115 LITTLE WARM 9370 .0 .0 100* 27.3 25.0 109 SOUTH PASS 9040 .0 .0 100* 27.5 30.1 91 ST. LAWRENCE ALT 8620 .0 .0 100* 21.9 19.8 111 TOGWOTEE PASS 9580 .0 .0 100* 50.0 38.2 131 TOWNSEND CREEK 8700 .0 .0 100* 24.4 23.2 105 ----- ----- Basin wide percent of average * 110 BIGHORN BASIN BALD MTN. 9380 .0 .0 100* 38.3 31.3 122 BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.2 115 BLACKWATER 9780 .0 .0 100* 44.7 35.8 125 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 29.1 121 EVENING STAR 9200 .0 .0 100* 58.0 41.6 139 GRAVE SPRINGS 8550 .0 .0 100* 24.1 21.2 114 KIRWIN 9550 .0 .0 100* 26.7 24.4 109 MARQUETTE 8760 .0 -M * 22.1 24.5 90 MIDDLE POWDER 7760 .0 .0 100* 25.5 24.1 106 OWL CREEK 8975 .0 .0 100* 16.5 16.1 102 POWDER RIVER PASS 9480 .0 .0 100* 33.5 25.1 133 SHELL CREEK 9580 .0 .0 100* 33.7 26.8 126 SYLVAN LAKE 8420 .0 .0 100* 47.8 35.1 136 SYLVAN ROAD 7120 .0 .0 100* 35.5 28.3 125 TIMBER CREEK 7950 .0 .0 100* 18.5 19.6 94 YOUNTS PEAK 8350 .0 .0 100* 29.6 28.4 104 ----- ----- Basin wide percent of average * 119 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 44.7 35.8 125 EVENING STAR 9200 .0 .0 100* 58.0 41.6 139 KIRWIN 9550 .0 .0 100* 26.7 24.4 109 MARQUETTE 8760 .0 -M * 22.1 24.5 90 SYLVAN LAKE 8420 .0 .0 100* 47.8 35.1 136 SYLVAN ROAD 7120 .0 .0 100* 35.5 28.3 125 YOUNTS PEAK 8350 .0 .0 100* 29.6 28.4 104 ----- ----- Basin wide percent of average * 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100* 22.0 19.2 115 BIG GOOSE 7990 .0 .0 100* 28.0 20.4 137 BONE SPRINGS DIV 9350 .0 .0 100* 35.3 29.1 121 BURGESS JUNCTION 7880 .0 .0 100* 30.4 24.4 125 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.9 28.4 123 DOME LAKE 8880 .0 .0 100* 31.3 26.3 119 GRAVE SPRINGS 8550 .0 .0 100* 24.1 21.2 114 HANSEN SAWMILL 8360 .0 .0 100* 24.1 20.0 121 LITTLE GOOSE 8870 .0 -M * 31.9 -M * MIDDLE POWDER 7760 .0 .0 100* 25.5 24.1 106 POWDER RIVER PASS 9480 .0 .0 100* 33.5 25.1 133 SOLDIER PARK 8720 .0 -M * 24.0 -M * SUCKER CREEK 8880 .0 .0 100* 35.8 27.6 130 TIE CREEK 6870 .0 .0 100* 29.3 22.7 129 ----- ----- Basin wide percent of average * 123 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 32.3 25.2 128 COLE CANYON 5910 .0 .0 100* 31.0 20.9 148 NORTH RAPID CREEK 6130 .0 .0 100* 31.2 23.8 131 ----- ----- Basin wide percent of average * 135 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .0 -M * 62.9 -M * CINNABAR PARK 9574 .9 .0 * -M 31.2 * COLUMBINE 9160 .0 .0 100* 52.7 36.2 146 DIVIDE PEAK 8880 .0 .0 100* 44.2 31.4 141 ELK RIVER 8700 .0 .0 100* 41.2 30.3 136 JOE WRIGHT 10120 .0 .0 100* 60.8 41.7 146 NORTH FRENCH CREEK 10130 .0 .0 100* -M 40.1 * OLD BATTLE 10000 .0 .0 100* -M 48.8 * SAGE CREEK BASIN 7850 .0 .0 100* 28.3 18.2 155 SOUTH BRUSH CREEK 8440 .0 .0 100* -M 28.6 * TOWER 10500 .0 .0 100* 90.0 55.5 162 WEBBER SPRINGS 9250 .0 .0 100* 53.4 39.1 137 WILLOW CREEK PASS 9540 .1 .0 * 35.6 24.4 146 ----- ----- Basin wide percent of average * 147 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 49.9 36.3 137 CASPER MTN. 7900 .0 .0 100* 27.4 28.5 96 DEADMAN HILL 10220 .0 .0 100* 38.4 29.4 131 DEER PARK 9700 .0 .0 100* 37.0 35.8 103 LAPRELE CREEK 8375 .0 .0 100* 25.5 25.6 100 RENO HILL 8400 .0 .0 100* 30.7 29.4 104 ROACH 9700 .0 .0 100* 40.3 31.4 128 SAND LAKE 10050 .0 .0 100* 57.3 39.6 145 SOUTH PASS 9040 .0 .0 100* 27.5 30.1 91 WINDY PEAK 7900 .0 .0 100* 22.6 22.1 102 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * 30.0 23.9 126 DIVIDE PEAK 8880 .0 .0 100* 44.2 31.4 141 OLD BATTLE 10000 .0 .0 100* -M 48.8 * SANDSTONE RS 8150 -M .0 * -M 28.8 * WHISKEY PARK 8950 .0 .0 100* 64.8 42.7 152 ----- ----- Basin wide percent of average * 142 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 .0 * 27.0 22.8 118 BLIND BULL SUM 8650 .0 .0 100* 37.4 32.3 116 EAST RIM DIVIDE 7930 .3 .0 * 24.0 19.5 123 ELKHART PARK G.S. 9400 .0 .0 100* 24.0 23.7 101 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.6 22.6 118 GUNSIGHT PASS 9820 .0 -M * 32.5 -M * KENDALL R.S. 7740 .0 .0 100* 24.9 22.2 112 LOOMIS PARK 8240 .1 .0 * 34.2 26.7 128 NEW FORK LAKE 8340 .2 .0 * 19.4 20.0 97 POCKET CREEK 9360 .0 -M * 25.2 -M * SNIDER BASIN 8060 .0 .0 100* 28.9 23.3 124 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.1 * TRIPLE PEAK 8500 .0 .0 100* 52.2 36.3 144 ----- ----- Basin wide percent of average * 120 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 * 25.6 20.4 125 HEWINTA 9519 .0 .0 100* -M 25.3 * HICKERSON PARK 9145 .0 .0 100* -M 17.3 * HOLE-IN-ROCK 9150 .3 .0 * -M 17.2 * INDIAN CREEK 9425 .2 .0 * 41.8 36.2 115 KELLEY R.S. 8180 .0 .0 100* 37.3 29.6 126 STEEL CREEK PARK 10200 .0 .0 100* -M 28.4 * ----- ----- Basin wide percent of average * 121* UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 45.3 28.3 160 HAYDEN FORK 9212 .0 .0 100* 48.1 33.1 145 KELLEY R.S. 8180 .0 .0 100* 37.3 29.6 126 LILY LAKE 9156 .0 .0 100* -M 28.4 * MONTE CRISTO 8960 .0 .0 100* 58.3 37.7 155 SALT RIVER SUMMIT 7760 .1 .0 * 33.4 27.6 121 TRIAL LAKE 9992 .1 .0 * 52.9 38.9 136 ----- ----- 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.