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 SUNDAY: AUGUST 16 , 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 30.9 * COTTONWOOD CREEK 7670 .0 .0 100 48.3 39.8 121 GRAND TARGHEE 9260 .0 -M * 51.9 -M * GRANITE CREEK 6770 .1 .0 32.0 28.5 112 GRASSY LAKE 7265 .0 .0 100 51.8 50.4 103 GROS VENTRE SUMMIT 8750 .0 .0 100 25.5 22.1 115 GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 49.9 50.4 99 PHILLIPS BENCH 8200 .0 .0 100 44.4 40.9 109 SALT RIVER SUMMIT 7760 .1 .0 27.9 27.2 103 SNAKE RIVER STATION 6920 .0 .0 100 35.8 32.8 109 SPRING CREEK DIVIDE 9000 .0 .0 100 40.4 36.6 110 THUMB DIVIDE 7980 .0 .0 100 33.6 28.4 118 TOGWOTEE PASS 9580 .1 .0 45.8 37.7 121 TWO OCEAN PLATEAU 9240 .0 .0 100 47.5 42.0 113 WILLOW CREEK 8380 .0 .0 100 59.2 48.0 123 ----- ----- Basin wide percent of average * 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100 36.0 32.6 110 BLACK BEAR 8170 .0 .0 100 52.2 56.2 93 CANYON 7870 .0 .0 100 28.2 25.1 112 FISHER CREEK 9100 -M .0 * 52.2 54.2 96 MADISON PLATEAU 7750 .0 .0 100 37.7 39.1 96 NORTHEAST ENTRANCE 7350 .0 .0 100 25.1 23.1 109 PARKER PEAK 9400 .0 .0 100 31.7 28.5 111 SYLVAN LAKE 8420 .0 .0 100 39.1 34.7 113 THUMB DIVIDE 7980 .0 .0 100 33.6 28.4 118 TWO OCEAN PLATEAU 9240 .0 .0 100 47.5 42.0 113 WHISKEY CREEK 6800 .0 .0 100 -M 32.1 * WHITE MILL 8700 .0 .0 100 39.5 41.9 94 WOLVERINE 7650 .0 .0 100 24.2 23.0 105 ----- ----- Basin wide percent of average * 104 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 30.3 27.0 112 COLD SPRINGS 9630 .0 .0 100 21.9 21.4 102 DEER PARK 9700 .0 .0 100 32.3 35.4 91 HOBBS PARK 10100 .0 .0 100 27.7 25.8 107 LITTLE WARM 9370 .0 .0 100 27.6 24.6 112 SOUTH PASS 9040 .0 .0 100 27.9 29.8 94 ST. LAWRENCE ALT 8620 .0 .0 100 20.1 19.5 103 TOGWOTEE PASS 9580 .1 .0 45.8 37.7 121 TOWNSEND CREEK 8700 .0 .0 100 24.4 22.9 107 ----- ----- Basin wide percent of average * 106 BIGHORN BASIN BALD MTN. 9380 .2 .0 28.9 31.0 93 BEAR TRAP MEADOW 8200 .0 .0 100 21.2 18.9 112 BLACKWATER 9780 .0 .0 100 38.4 35.4 108 BONE SPRINGS DIV 9350 .1 .0 27.8 28.6 97 EVENING STAR 9200 -M .0 * -M 41.1 * GRAVE SPRINGS 8550 .2 .0 18.0 21.0 86 KIRWIN 9550 .0 .0 100 28.3 23.9 118 MARQUETTE 8760 .0 .0 100 20.8 24.1 86 MIDDLE POWDER 7760 .0 .0 100 21.7 23.9 91 OWL CREEK 8975 .0 .0 100 20.8 15.8 132 POWDER RIVER PASS 9480 .0 .0 100 28.3 24.8 114 SHELL CREEK 9580 .1 .0 28.7 26.4 109 SYLVAN LAKE 8420 .0 .0 100 39.1 34.7 113 SYLVAN ROAD 7120 .1 .0 32.5 27.9 116 TIMBER CREEK 7950 .0 .0 100 19.6 19.1 103 YOUNTS PEAK 8350 .0 .0 100 28.2 27.8 101 ----- ----- Basin wide percent of average * 105 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100 38.4 35.4 108 EVENING STAR 9200 -M .0 * -M 41.1 * KIRWIN 9550 .0 .0 100 28.3 23.9 118 MARQUETTE 8760 .0 .0 100 20.8 24.1 86 SYLVAN LAKE 8420 .0 .0 100 39.1 34.7 113 SYLVAN ROAD 7120 .1 .0 32.5 27.9 116 YOUNTS PEAK 8350 .0 .0 100 28.2 27.8 101 ----- ----- Basin wide percent of average * 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100 21.2 18.9 112 BIG GOOSE 7990 .0 .0 100 22.9 20.0 114 BONE SPRINGS DIV 9350 .1 .0 27.8 28.6 97 BURGESS JUNCTION 7880 .1 .0 23.6 24.1 98 CLOUD PEAK RESERVOIR 9860 .4 .0 30.3 28.0 108 DOME LAKE 8880 .0 .0 100 27.2 25.9 105 GRAVE SPRINGS 8550 .2 .0 18.0 21.0 86 HANSEN SAWMILL 8360 .0 .0 100 19.3 19.7 98 MIDDLE POWDER 7760 .0 .0 100 21.7 23.9 91 POWDER RIVER PASS 9480 .0 .0 100 28.3 24.8 114 SUCKER CREEK 8880 .0 .0 100 30.8 27.2 113 TIE CREEK 6870 .1 .0 27.7 22.2 125 ----- ----- Basin wide percent of average * 105 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 27.0 24.7 109 COLE CANYON 5910 .0 .0 100 26.6 20.3 131 NORTH RAPID CREEK 6130 .1 .0 22.0 23.2 95 ----- ----- Basin wide percent of average * 111 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 38.0 35.8 106 DIVIDE PEAK 8880 .1 .0 41.5 31.0 134 ELK RIVER 8700 .0 .0 100 -M 29.8 * JOE WRIGHT 10120 .0 .0 100 43.5 41.0 106 NORTH FRENCH CREEK 10130 -M .0 * -M 39.7 * OLD BATTLE 10000 .0 .0 100 -M 48.4 * SAGE CREEK BASIN 7850 .0 .0 100 25.7 18.0 143 SOUTH BRUSH CREEK 8440 .0 .0 100 27.0 28.1 96 TOWER 10500 .0 .0 100 -M 55.0 * WEBBER SPRINGS 9250 .0 .0 100 42.4 38.6 110 WILLOW CREEK PASS 9540 .0 .0 100 22.6 23.8 95 ----- ----- Basin wide percent of average * 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 34.1 35.9 95 CASPER MTN. 7900 .0 .0 100 26.6 28.1 95 DEADMAN HILL 10220 .0 .0 100 30.0 28.9 104 DEER PARK 9700 .0 .0 100 32.3 35.4 91 LAPRELE CREEK 8375 -M .0 * 23.2 25.0 93 RENO HILL 8400 .0 .0 100 28.4 28.9 98 ROACH 9700 .0 .0 100 31.9 30.9 103 SAND LAKE 10050 .0 .0 100 44.6 39.2 114 SOUTH PASS 9040 .0 .0 100 27.9 29.8 94 WINDY PEAK 7900 .0 .0 100 22.7 21.8 104 ----- ----- Basin wide percent of average * 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 29.0 23.6 123 DIVIDE PEAK 8880 .1 .0 41.5 31.0 134 OLD BATTLE 10000 .0 .0 100 -M 48.4 * SANDSTONE RS 8150 .3 .0 31.9 28.3 113 WHISKEY PARK 8950 .0 .0 100 48.1 42.2 114 ----- ----- Basin wide percent of average * 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 26.7 22.4 119 BLIND BULL SUM 8650 .0 .0 100 32.4 31.8 102 EAST RIM DIVIDE 7930 -M .0 * 21.5 19.1 113 ELKHART PARK G.S. 9400 .0 .0 100 27.8 23.1 120 GROS VENTRE SUMMIT 8750 .0 .0 100 25.5 22.1 115 GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .0 .0 100 24.0 21.8 110 LOOMIS PARK 8240 .0 .0 100 30.5 26.1 117 NEW FORK LAKE 8340 .0 .0 100 21.2 19.5 109 SNIDER BASIN 8060 .0 .0 100 23.2 23.0 101 SPRING CREEK DIVIDE 9000 .0 .0 100 40.4 36.6 110 TRIPLE PEAK 8500 .0 .0 100 41.0 35.9 114 ----- ----- Basin wide percent of average * 112 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 22.9 20.0 114 HEWINTA 9519 .0 .0 100 22.9 24.8 92 HICKERSON PARK 9145 .0 .0 100 22.8 16.7 137 HOLE-IN-ROCK 9150 .0 .0 100 19.3 16.5 117 INDIAN CREEK 9425 .0 .0 100 33.5 35.8 94 KELLEY R.S. 8180 .1 .0 29.9 29.3 102 STEEL CREEK PARK 10200 .0 .0 100 27.9 27.8 100 ----- ----- Basin wide percent of average * 105 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 27.2 28.0 97 HAYDEN FORK 9212 .0 .0 100 33.5 32.5 103 KELLEY R.S. 8180 .1 .0 29.9 29.3 102 LILY LAKE 9156 .0 .0 100 27.7 27.9 99 MONTE CRISTO 8960 .0 .0 100 39.1 37.2 105 SALT RIVER SUMMIT 7760 .1 .0 27.9 27.2 103 TRIAL LAKE 9992 .0 .0 100 38.5 38.2 101 ----- ----- Basin wide percent of average * 102 ----------------------------------------------------------------------------- -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.