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 13 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M .0 * -M 30.8 * COTTONWOOD CREEK 7670 .0 .0 100 48.3 39.7 122 GRAND TARGHEE 9260 .0 -M * 51.7 -M * GRANITE CREEK 6770 .1 .0 31.9 28.4 112 GRASSY LAKE 7265 .1 .0 51.9 50.2 103 GROS VENTRE SUMMIT 8750 .0 .0 100 25.4 22.0 115 GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 50.0 50.2 100 PHILLIPS BENCH 8200 .0 .0 100 44.5 40.8 109 SALT RIVER SUMMIT 7760 .1 .0 27.8 27.1 103 SNAKE RIVER STATION 6920 .0 .0 100 35.8 32.7 109 SPRING CREEK DIVIDE 9000 .0 .0 100 40.4 36.5 111 THUMB DIVIDE 7980 .1 .0 33.8 28.3 119 TOGWOTEE PASS 9580 .0 .0 100 45.4 37.5 121 TWO OCEAN PLATEAU 9240 .0 .0 100 47.5 41.8 114 WILLOW CREEK 8380 .0 .0 100 59.1 47.8 124 ----- ----- Basin wide percent of average * 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100 36.5 32.5 112 BLACK BEAR 8170 .0 .0 100 52.2 56.0 93 CANYON 7870 .0 .0 100 28.2 25.0 113 FISHER CREEK 9100 .0 .0 100 52.9 54.0 98 MADISON PLATEAU 7750 .0 .0 100 37.8 39.0 97 NORTHEAST ENTRANCE 7350 .0 .0 100 25.1 22.9 110 PARKER PEAK 9400 .0 .0 100 31.8 28.3 112 SYLVAN LAKE 8420 .0 .0 100 39.1 34.6 113 THUMB DIVIDE 7980 .1 .0 33.8 28.3 119 TWO OCEAN PLATEAU 9240 .0 .0 100 47.5 41.8 114 WHISKEY CREEK 6800 .0 .0 100 30.7 32.0 96 WHITE MILL 8700 .0 .0 100 39.8 41.7 95 WOLVERINE 7650 .1 .0 24.2 22.9 106 ----- ----- Basin wide percent of average * 104 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 30.3 26.9 113 COLD SPRINGS 9630 .0 .0 100 21.6 21.3 101 DEER PARK 9700 .0 .0 100 32.0 35.3 91 HOBBS PARK 10100 .0 .0 100 27.5 25.6 107 LITTLE WARM 9370 .0 .0 100 27.4 24.5 112 SOUTH PASS 9040 .0 .0 100 27.7 29.7 93 ST. LAWRENCE ALT 8620 .0 .0 100 19.9 19.4 103 TOGWOTEE PASS 9580 .0 .0 100 45.4 37.5 121 TOWNSEND CREEK 8700 .0 .0 100 24.0 22.8 105 ----- ----- Basin wide percent of average * 105 BIGHORN BASIN BALD MTN. 9380 .0 .0 100 28.1 30.9 91 BEAR TRAP MEADOW 8200 -M .0 * -M 18.8 * BLACKWATER 9780 .0 .0 100 38.5 35.2 109 BONE SPRINGS DIV 9350 .0 .0 100 27.5 28.5 96 EVENING STAR 9200 .0 .0 100 47.8 41.0 117 GRAVE SPRINGS 8550 .0 .0 100 17.0 20.9 81 KIRWIN 9550 .0 .0 100 28.3 23.7 119 MARQUETTE 8760 .0 .0 100 20.6 23.9 86 MIDDLE POWDER 7760 .0 .0 100 20.0 23.8 84 OWL CREEK 8975 .0 .0 100 20.5 15.7 131 POWDER RIVER PASS 9480 .0 .0 100 27.0 24.7 109 SHELL CREEK 9580 .0 .0 100 27.7 26.3 105 SYLVAN LAKE 8420 .0 .0 100 39.1 34.6 113 SYLVAN ROAD 7120 .0 .0 100 32.3 27.8 116 TIMBER CREEK 7950 .0 .0 100 19.4 19.0 102 YOUNTS PEAK 8350 .0 .0 100 28.0 27.6 101 ----- ----- Basin wide percent of average * 105 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100 38.5 35.2 109 EVENING STAR 9200 .0 .0 100 47.8 41.0 117 KIRWIN 9550 .0 .0 100 28.3 23.7 119 MARQUETTE 8760 .0 .0 100 20.6 23.9 86 SYLVAN LAKE 8420 .0 .0 100 39.1 34.6 113 SYLVAN ROAD 7120 .0 .0 100 32.3 27.8 116 YOUNTS PEAK 8350 .0 .0 100 28.0 27.6 101 ----- ----- Basin wide percent of average * 110 POWDER-TONGUE BEAR TRAP MEADOW 8200 -M .0 * -M 18.8 * BIG GOOSE 7990 .0 .0 100 22.5 19.9 113 BONE SPRINGS DIV 9350 .0 .0 100 27.5 28.5 96 BURGESS JUNCTION 7880 .0 .0 100 23.4 24.0 98 CLOUD PEAK RESERVOIR 9860 .0 .0 100 29.6 27.8 106 DOME LAKE 8880 .0 .0 100 26.6 25.8 103 GRAVE SPRINGS 8550 .0 .0 100 17.0 20.9 81 HANSEN SAWMILL 8360 .0 .0 100 19.3 19.5 99 MIDDLE POWDER 7760 .0 .0 100 20.0 23.8 84 POWDER RIVER PASS 9480 .0 .0 100 27.0 24.7 109 SUCKER CREEK 8880 .0 .0 100 30.5 27.1 113 TIE CREEK 6870 .0 .0 100 27.5 22.1 124 ----- ----- Basin wide percent of average * 103 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 26.7 24.5 109 COLE CANYON 5910 .0 .0 100 26.6 20.1 132 NORTH RAPID CREEK 6130 .0 .0 100 21.9 23.1 95 ----- ----- Basin wide percent of average * 111 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 37.9 35.7 106 DIVIDE PEAK 8880 .1 .0 40.7 30.8 132 ELK RIVER 8700 .0 .0 100 -M 29.7 * JOE WRIGHT 10120 .0 .0 100 42.9 40.7 105 NORTH FRENCH CREEK 10130 -M .0 * -M 39.5 * OLD BATTLE 10000 .0 .0 100 -M 48.3 * SAGE CREEK BASIN 7850 .0 .0 100 25.2 17.9 141 SOUTH BRUSH CREEK 8440 .0 .0 100 26.8 28.0 96 TOWER 10500 .0 .0 100 -M 54.8 * WEBBER SPRINGS 9250 .0 .0 100 42.0 38.5 109 WILLOW CREEK PASS 9540 .1 .0 22.5 23.6 95 ----- ----- Basin wide percent of average * 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 33.9 35.7 95 CASPER MTN. 7900 .0 .0 100 26.5 28.0 95 DEADMAN HILL 10220 .1 .0 28.2 28.7 98 DEER PARK 9700 .0 .0 100 32.0 35.3 91 LAPRELE CREEK 8375 -M .0 * 22.9 24.8 92 RENO HILL 8400 .1 .0 28.3 28.8 98 ROACH 9700 .0 .0 100 31.3 30.8 102 SAND LAKE 10050 .0 .0 100 44.6 39.1 114 SOUTH PASS 9040 .0 .0 100 27.7 29.7 93 WINDY PEAK 7900 .0 .0 100 22.0 21.6 102 ----- ----- Basin wide percent of average * 98 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 28.3 23.5 120 DIVIDE PEAK 8880 .1 .0 40.7 30.8 132 OLD BATTLE 10000 .0 .0 100 -M 48.3 * SANDSTONE RS 8150 -M .0 * 31.0 28.2 110 WHISKEY PARK 8950 .0 .0 100 47.5 42.1 113 ----- ----- Basin wide percent of average * 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 26.4 22.2 119 BLIND BULL SUM 8650 .0 .0 100 32.5 31.7 103 EAST RIM DIVIDE 7930 -M .0 * 21.6 19.0 114 ELKHART PARK G.S. 9400 .1 .0 27.4 22.9 120 GROS VENTRE SUMMIT 8750 .0 .0 100 25.4 22.0 115 GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .0 .0 100 24.0 21.7 111 LOOMIS PARK 8240 .1 .0 30.4 25.9 117 NEW FORK LAKE 8340 .0 .0 100 21.2 19.4 109 SNIDER BASIN 8060 .0 .0 100 23.2 22.9 101 SPRING CREEK DIVIDE 9000 .0 .0 100 40.4 36.5 111 TRIPLE PEAK 8500 .1 .0 41.1 35.7 115 ----- ----- Basin wide percent of average * 112 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 22.8 19.9 115 HEWINTA 9519 .0 .0 100 22.6 24.6 92 HICKERSON PARK 9145 .0 .0 100 21.9 16.5 133 HOLE-IN-ROCK 9150 .0 .0 100 18.8 16.3 115 INDIAN CREEK 9425 .0 .0 100 33.6 35.7 94 KELLEY R.S. 8180 .1 .0 29.9 29.2 102 STEEL CREEK PARK 10200 .0 .0 100 27.3 27.7 99 ----- ----- Basin wide percent of average * 104 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 27.0 27.8 97 HAYDEN FORK 9212 .0 .0 100 33.1 32.3 102 KELLEY R.S. 8180 .1 .0 29.9 29.2 102 LILY LAKE 9156 .0 .0 100 27.2 27.7 98 MONTE CRISTO 8960 .0 .0 100 38.8 37.1 105 SALT RIVER SUMMIT 7760 .1 .0 27.8 27.1 103 TRIAL LAKE 9992 .0 .0 100 37.8 38.0 99 ----- ----- Basin wide percent of average * 101 ----------------------------------------------------------------------------- -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 1961-90. 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.