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 SATURDAY: SEPTEMBER 5 , 2009 ----------------------------------------------------------------------------- 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 32.5 31.8 102 COTTONWOOD CREEK 7670 .0 .0 100 48.9 41.0 119 GRAND TARGHEE 9260 .0 -M * 53.0 -M * GRANITE CREEK 6770 .0 .0 100 32.4 29.3 111 GRASSY LAKE 7265 .1 .0 53.1 51.6 103 GROS VENTRE SUMMIT 8750 .0 .0 100 25.9 23.2 112 GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 51.0 51.5 99 PHILLIPS BENCH 8200 .1 .0 45.0 42.0 107 SALT RIVER SUMMIT 7760 .2 .0 28.2 28.1 100 SNAKE RIVER STATION 6920 .0 .0 100 36.6 33.7 109 SPRING CREEK DIVIDE 9000 .0 .0 100 41.0 37.7 109 THUMB DIVIDE 7980 .1 .0 35.0 29.2 120 TOGWOTEE PASS 9580 .0 .0 100 46.2 38.7 119 TWO OCEAN PLATEAU 9240 .0 .0 100 48.3 43.1 112 WILLOW CREEK 8380 .0 .0 100 60.2 49.3 122 ----- ----- Basin wide percent of average * 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100 37.2 33.6 111 BLACK BEAR 8170 .0 .0 100 53.8 57.5 94 CANYON 7870 .0 .0 100 28.6 26.2 109 FISHER CREEK 9100 -M .0 * 53.6 55.8 96 MADISON PLATEAU 7750 .0 .0 100 39.1 40.3 97 NORTHEAST ENTRANCE 7350 .0 .0 100 26.1 24.3 107 PARKER PEAK 9400 .0 .0 100 33.1 29.3 113 SYLVAN LAKE 8420 .0 .0 100 39.8 35.5 112 THUMB DIVIDE 7980 .1 .0 35.0 29.2 120 TWO OCEAN PLATEAU 9240 .0 .0 100 48.3 43.1 112 WHISKEY CREEK 6800 .0 .0 100 31.8 33.3 95 WHITE MILL 8700 .0 .0 100 41.0 43.2 95 WOLVERINE 7650 .0 .0 100 24.5 24.1 102 ----- ----- Basin wide percent of average * 103 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 30.5 28.0 109 COLD SPRINGS 9630 .0 .0 100 22.0 22.2 99 DEER PARK 9700 .0 .0 100 32.7 36.3 90 HOBBS PARK 10100 .0 .0 100 28.0 26.7 105 LITTLE WARM 9370 .0 .0 100 28.1 25.6 110 SOUTH PASS 9040 .0 .0 100 28.4 30.5 93 ST. LAWRENCE ALT 8620 .0 .0 100 20.4 20.1 101 TOGWOTEE PASS 9580 .0 .0 100 46.2 38.7 119 TOWNSEND CREEK 8700 .0 .0 100 24.5 23.7 103 ----- ----- Basin wide percent of average * 104 BIGHORN BASIN BALD MTN. 9380 .0 .0 100 29.4 31.8 92 BEAR TRAP MEADOW 8200 .0 .0 100 21.9 19.6 112 BLACKWATER 9780 .0 .0 100 39.5 36.4 109 BONE SPRINGS DIV 9350 .1 .0 28.1 29.7 95 EVENING STAR 9200 .0 .0 100 49.0 42.2 116 GRAVE SPRINGS 8550 .0 .0 100 18.5 21.4 86 KIRWIN 9550 .0 .0 100 30.1 25.0 120 MARQUETTE 8760 .0 .0 100 21.2 25.1 84 MIDDLE POWDER 7760 .0 .0 100 23.7 24.5 97 OWL CREEK 8975 .0 .0 100 21.1 16.5 128 POWDER RIVER PASS 9480 .0 .0 100 28.8 25.5 113 SHELL CREEK 9580 .0 .0 100 29.1 27.3 107 SYLVAN LAKE 8420 .0 .0 100 39.8 35.5 112 SYLVAN ROAD 7120 .0 .0 100 32.8 28.8 114 TIMBER CREEK 7950 .0 .0 100 19.8 20.1 99 YOUNTS PEAK 8350 .0 .0 100 28.5 29.1 98 ----- ----- Basin wide percent of average * 105 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100 39.5 36.4 109 EVENING STAR 9200 .0 .0 100 49.0 42.2 116 KIRWIN 9550 .0 .0 100 30.1 25.0 120 MARQUETTE 8760 .0 .0 100 21.2 25.1 84 SYLVAN LAKE 8420 .0 .0 100 39.8 35.5 112 SYLVAN ROAD 7120 .0 .0 100 32.8 28.8 114 YOUNTS PEAK 8350 .0 .0 100 28.5 29.1 98 ----- ----- Basin wide percent of average * 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100 21.9 19.6 112 BIG GOOSE 7990 .0 .0 100 23.4 21.1 111 BONE SPRINGS DIV 9350 .1 .0 28.1 29.7 95 BURGESS JUNCTION 7880 .2 .0 24.3 24.7 98 CLOUD PEAK RESERVOIR 9860 .2 .0 30.7 28.9 106 DOME LAKE 8880 .0 .0 100 27.6 26.9 103 GRAVE SPRINGS 8550 .0 .0 100 18.5 21.4 86 HANSEN SAWMILL 8360 .0 .0 100 21.1 20.5 103 MIDDLE POWDER 7760 .0 .0 100 23.7 24.5 97 POWDER RIVER PASS 9480 .0 .0 100 28.8 25.5 113 SUCKER CREEK 8880 .0 .0 100 31.3 28.1 111 TIE CREEK 6870 .1 .0 28.3 23.2 122 ----- ----- Basin wide percent of average * 105 BELLE FOURCHE BLIND PARK 6890 .1 .0 27.6 25.6 108 COLE CANYON 5910 .3 .0 27.1 21.3 127 NORTH RAPID CREEK 6130 .2 .0 22.6 24.2 93 ----- ----- Basin wide percent of average * 109 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 38.3 36.6 105 DIVIDE PEAK 8880 .2 .0 41.6 31.8 131 ELK RIVER 8700 .0 .0 100 33.1 30.9 107 JOE WRIGHT 10120 .0 .0 100 44.0 42.5 104 NORTH FRENCH CREEK 10130 .0 .0 100 48.1 40.7 118 OLD BATTLE 10000 .0 .0 100 -M 49.5 * SAGE CREEK BASIN 7850 .0 .0 100 26.1 18.5 141 SOUTH BRUSH CREEK 8440 .0 .0 100 27.4 29.2 94 TOWER 10500 .0 .0 100 60.4 56.2 107 WEBBER SPRINGS 9250 .0 .0 100 43.1 39.7 109 WILLOW CREEK PASS 9540 .0 .0 100 23.2 25.0 93 ----- ----- Basin wide percent of average * 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 34.3 36.9 93 CASPER MTN. 7900 .1 .0 26.7 28.8 93 DEADMAN HILL 10220 .0 .0 100 28.9 30.0 96 DEER PARK 9700 .0 .0 100 32.7 36.3 90 LAPRELE CREEK 8375 -M .0 * 23.5 26.2 90 RENO HILL 8400 .1 .0 28.4 29.8 95 ROACH 9700 .0 .0 100 32.4 31.9 102 SAND LAKE 10050 .0 .0 100 45.5 40.1 113 SOUTH PASS 9040 .0 .0 100 28.4 30.5 93 WINDY PEAK 7900 .0 .0 100 23.2 22.5 103 ----- ----- Basin wide percent of average * 97 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 28.9 24.2 119 DIVIDE PEAK 8880 .2 .0 41.6 31.8 131 OLD BATTLE 10000 .0 .0 100 -M 49.5 * SANDSTONE RS 8150 -M .0 * 32.1 29.3 110 WHISKEY PARK 8950 .0 .0 100 48.5 43.1 113 ----- ----- Basin wide percent of average * 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 27.0 23.3 116 BLIND BULL SUM 8650 .0 .0 100 32.9 32.9 100 EAST RIM DIVIDE 7930 -M .0 * 21.8 20.0 109 ELKHART PARK G.S. 9400 .1 .0 28.1 24.4 115 GROS VENTRE SUMMIT 8750 .0 .0 100 25.9 23.2 112 GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .1 .0 24.3 22.7 107 LOOMIS PARK 8240 .1 .0 30.6 27.3 112 NEW FORK LAKE 8340 .0 .0 100 21.9 20.5 107 SNIDER BASIN 8060 .0 .0 100 23.7 23.7 100 SPRING CREEK DIVIDE 9000 .0 .0 100 41.0 37.7 109 TRIPLE PEAK 8500 .0 .0 100 41.5 36.9 112 ----- ----- Basin wide percent of average * 109 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 23.1 20.7 112 HEWINTA 9519 .0 .0 100 23.3 26.0 90 HICKERSON PARK 9145 .0 .0 100 23.1 18.0 128 HOLE-IN-ROCK 9150 .0 .0 100 19.5 17.9 109 INDIAN CREEK 9425 .1 .0 34.2 36.7 93 KELLEY R.S. 8180 .2 .0 30.6 30.1 102 STEEL CREEK PARK 10200 .0 .0 100 28.1 29.1 97 ----- ----- Basin wide percent of average * 102 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 -M 28.8 * HAYDEN FORK 9212 .0 .0 100 33.9 33.7 101 KELLEY R.S. 8180 .2 .0 30.6 30.1 102 LILY LAKE 9156 .1 .0 28.1 29.1 97 MONTE CRISTO 8960 .0 .0 100 39.7 38.3 104 SALT RIVER SUMMIT 7760 .2 .0 28.2 28.1 100 TRIAL LAKE 9992 .0 .0 100 38.6 39.7 97 ----- ----- Basin wide percent of average * 100 ----------------------------------------------------------------------------- -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.