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: SEPTEMBER 11 , 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 32.7 32.1 102 COTTONWOOD CREEK 7670 .0 .0 100 48.9 41.4 118 GRAND TARGHEE 9260 .1 -M * .0 -M * GRANITE CREEK 6770 .1 .0 32.6 29.6 110 GRASSY LAKE 7265 .1 .0 53.5 52.0 103 GROS VENTRE SUMMIT 8750 .0 .0 100 26.0 23.6 110 GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 51.1 51.9 98 PHILLIPS BENCH 8200 .1 .0 45.0 42.4 106 SALT RIVER SUMMIT 7760 .2 .0 28.2 28.5 99 SNAKE RIVER STATION 6920 .0 .0 100 36.8 34.1 108 SPRING CREEK DIVIDE 9000 .0 .0 100 41.0 38.1 108 THUMB DIVIDE 7980 .0 .0 100 35.0 29.4 119 TOGWOTEE PASS 9580 .0 .0 100 46.6 39.1 119 TWO OCEAN PLATEAU 9240 .0 .0 100 48.4 43.5 111 WILLOW CREEK 8380 .0 .0 100 60.2 49.7 121 ----- ----- Basin wide percent of average * 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .1 0 37.4 33.9 110 BLACK BEAR 8170 .0 .0 100 53.8 58.0 93 CANYON 7870 .0 .0 100 28.9 26.5 109 FISHER CREEK 9100 .0 .0 100 53.7 56.3 95 MADISON PLATEAU 7750 .0 .0 100 39.1 40.7 96 NORTHEAST ENTRANCE 7350 .0 .0 100 26.2 24.7 106 PARKER PEAK 9400 .0 .1 0 33.1 29.6 112 SYLVAN LAKE 8420 .0 .0 100 39.9 35.9 111 THUMB DIVIDE 7980 .0 .0 100 35.0 29.4 119 TWO OCEAN PLATEAU 9240 .0 .0 100 48.4 43.5 111 WHISKEY CREEK 6800 .0 .0 100 31.9 33.8 94 WHITE MILL 8700 .0 .0 100 41.0 43.7 94 WOLVERINE 7650 .0 .0 100 24.7 24.4 101 ----- ----- Basin wide percent of average 0 103 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 30.8 28.4 108 COLD SPRINGS 9630 .0 .0 100 22.0 22.6 97 DEER PARK 9700 .0 .0 100 32.7 36.8 89 HOBBS PARK 10100 .0 .0 100 28.1 27.0 104 LITTLE WARM 9370 .0 .0 100 28.2 26.0 108 SOUTH PASS 9040 .0 .0 100 28.4 30.8 92 ST. LAWRENCE ALT 8620 .0 .0 100 20.5 20.4 100 TOGWOTEE PASS 9580 .0 .0 100 46.6 39.1 119 TOWNSEND CREEK 8700 .0 .0 100 24.5 24.0 102 ----- ----- Basin wide percent of average * 103 BIGHORN BASIN BALD MTN. 9380 .0 .0 100 29.4 32.2 91 BEAR TRAP MEADOW 8200 .0 .0 100 22.0 19.9 111 BLACKWATER 9780 .0 .1 0 39.7 36.8 108 BONE SPRINGS DIV 9350 .0 .1 0 28.3 30.2 94 EVENING STAR 9200 .0 .0 100 49.0 42.6 115 GRAVE SPRINGS 8550 .0 .0 100 18.6 21.7 86 KIRWIN 9550 .0 .0 100 30.1 25.6 118 MARQUETTE 8760 .0 .0 100 21.1 25.6 82 MIDDLE POWDER 7760 .0 .0 100 23.9 24.8 96 OWL CREEK 8975 .0 .0 100 21.2 16.8 126 POWDER RIVER PASS 9480 .0 .0 100 28.7 25.9 111 SHELL CREEK 9580 .0 .1 0 29.3 27.7 106 SYLVAN LAKE 8420 .0 .0 100 39.9 35.9 111 SYLVAN ROAD 7120 .0 .0 100 33.0 29.1 113 TIMBER CREEK 7950 .0 .0 100 19.8 20.5 97 YOUNTS PEAK 8350 .0 .0 100 29.0 29.6 98 ----- ----- Basin wide percent of average 0 104 SHOSHONE RIVER BLACKWATER 9780 .0 .1 0 39.7 36.8 108 EVENING STAR 9200 .0 .0 100 49.0 42.6 115 KIRWIN 9550 .0 .0 100 30.1 25.6 118 MARQUETTE 8760 .0 .0 100 21.1 25.6 82 SYLVAN LAKE 8420 .0 .0 100 39.9 35.9 111 SYLVAN ROAD 7120 .0 .0 100 33.0 29.1 113 YOUNTS PEAK 8350 .0 .0 100 29.0 29.6 98 ----- ----- Basin wide percent of average 0 107 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100 22.0 19.9 111 BIG GOOSE 7990 .0 .0 100 23.4 21.5 109 BONE SPRINGS DIV 9350 .0 .1 0 28.3 30.2 94 BURGESS JUNCTION 7880 .0 .0 100 24.4 25.1 97 CLOUD PEAK RESERVOIR 9860 .0 .0 100 30.7 29.3 105 DOME LAKE 8880 .0 .0 100 27.6 27.3 101 GRAVE SPRINGS 8550 .0 .0 100 18.6 21.7 86 HANSEN SAWMILL 8360 .0 .0 100 21.2 20.9 101 MIDDLE POWDER 7760 .0 .0 100 23.9 24.8 96 POWDER RIVER PASS 9480 .0 .0 100 28.7 25.9 111 SUCKER CREEK 8880 .0 .0 100 31.3 28.5 110 TIE CREEK 6870 .0 .0 100 28.5 23.6 121 ----- ----- Basin wide percent of average 0 103 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 27.6 25.9 107 COLE CANYON 5910 .0 .0 100 27.2 21.6 126 NORTH RAPID CREEK 6130 .0 .0 100 23.0 24.3 95 ----- ----- Basin wide percent of average * 108 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 38.6 36.9 105 DIVIDE PEAK 8880 .1 .0 41.6 32.1 130 ELK RIVER 8700 .0 .0 100 33.1 31.2 106 JOE WRIGHT 10120 .1 .0 44.0 42.9 103 NORTH FRENCH CREEK 10130 .0 .0 100 48.4 41.0 118 OLD BATTLE 10000 .0 .0 100 -M 49.9 * SAGE CREEK BASIN 7850 .0 .0 100 26.0 18.6 140 SOUTH BRUSH CREEK 8440 .0 .0 100 27.5 29.6 93 TOWER 10500 .1 .0 60.4 56.6 107 WEBBER SPRINGS 9250 .0 .0 100 43.2 40.1 108 WILLOW CREEK PASS 9540 .0 .0 100 23.5 25.3 93 ----- ----- Basin wide percent of average * 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 34.4 37.2 92 CASPER MTN. 7900 .0 .0 100 26.7 29.1 92 DEADMAN HILL 10220 .0 .0 100 28.9 30.3 95 DEER PARK 9700 .0 .0 100 32.7 36.8 89 LAPRELE CREEK 8375 -M .0 * 23.6 26.5 89 RENO HILL 8400 .0 .0 100 28.4 30.1 94 ROACH 9700 .0 .0 100 32.5 32.2 101 SAND LAKE 10050 .0 .0 100 45.7 40.4 113 SOUTH PASS 9040 .0 .0 100 28.4 30.8 92 WINDY PEAK 7900 .2 .0 23.2 22.8 102 ----- ----- Basin wide percent of average * 96 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 28.9 24.5 118 DIVIDE PEAK 8880 .1 .0 41.6 32.1 130 OLD BATTLE 10000 .0 .0 100 -M 49.9 * SANDSTONE RS 8150 -M .0 * 32.1 29.6 108 WHISKEY PARK 8950 .0 .0 100 48.6 43.5 112 ----- ----- Basin wide percent of average * 117 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 .0 27.2 23.6 115 BLIND BULL SUM 8650 .0 .0 100 33.2 33.2 100 EAST RIM DIVIDE 7930 -M .0 * 21.7 20.3 107 ELKHART PARK G.S. 9400 .1 .0 28.2 24.9 113 GROS VENTRE SUMMIT 8750 .0 .0 100 26.0 23.6 110 GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .0 .0 100 24.3 23.0 106 LOOMIS PARK 8240 .1 .0 30.8 27.7 111 NEW FORK LAKE 8340 .0 .0 100 22.2 20.9 106 SNIDER BASIN 8060 .0 .0 100 23.7 24.0 99 SPRING CREEK DIVIDE 9000 .0 .0 100 41.0 38.1 108 TRIPLE PEAK 8500 .0 .0 100 41.5 37.2 112 ----- ----- Basin wide percent of average * 108 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 23.1 20.9 111 HEWINTA 9519 .0 .0 100 23.4 26.4 89 HICKERSON PARK 9145 .0 .0 100 23.1 18.3 126 HOLE-IN-ROCK 9150 .0 .0 100 19.5 18.2 107 INDIAN CREEK 9425 .1 .0 34.2 37.0 92 KELLEY R.S. 8180 .2 .0 30.6 30.3 101 STEEL CREEK PARK 10200 .0 .0 100 28.3 29.5 96 ----- ----- Basin wide percent of average * 101 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 27.7 29.1 95 HAYDEN FORK 9212 .0 .0 100 34.0 34.1 100 KELLEY R.S. 8180 .2 .0 30.6 30.3 101 LILY LAKE 9156 .0 .0 100 28.2 29.4 96 MONTE CRISTO 8960 .0 .0 100 39.7 38.7 103 SALT RIVER SUMMIT 7760 .2 .0 28.2 28.5 99 TRIAL LAKE 9992 .0 .0 100 38.7 40.1 97 ----- ----- Basin wide percent of average * 99 ----------------------------------------------------------------------------- -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.