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 WEDNESDAY: SEPTEMBER 10 , 2008 ----------------------------------------------------------------------------- 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 36.4 32.1 113 COTTONWOOD CREEK 7670 .0 .0 100 -M 41.4 * GRAND TARGHEE 9260 .0 -M * 51.1 -M * GRANITE CREEK 6770 .0 .0 100 33.9 29.6 115 GRASSY LAKE 7265 .1 .0 58.5 52.0 112 GROS VENTRE SUMMIT 8750 .2 .0 22.0 23.6 93 GUNSIGHT PASS 9820 .3 -M * 23.9 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 50.1 51.9 97 PHILLIPS BENCH 8200 .0 .0 100 47.2 42.4 111 SALT RIVER SUMMIT 7760 -M .0 * -M 28.5 * SNAKE RIVER STATION 6920 .0 .0 100 37.8 34.1 111 SPRING CREEK DIVIDE 9000 -M .0 * 34.3 38.1 90 THUMB DIVIDE 7980 .3 .0 30.6 29.4 104 TOGWOTEE PASS 9580 .0 .0 100 43.2 39.1 110 TWO OCEAN PLATEAU 9240 .2 .0 46.4 43.5 107 WILLOW CREEK 8380 .0 .0 100 56.2 49.7 113 ----- ----- Basin wide percent of average * 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .1 .1 100 36.9 33.9 109 BLACK BEAR 8170 .0 .0 100 58.4 58.0 101 CANYON 7870 .0 .0 100 30.1 26.5 114 FISHER CREEK 9100 .1 .0 56.1 56.3 100 MADISON PLATEAU 7750 .0 .0 100 45.2 40.7 111 NORTHEAST ENTRANCE 7350 .0 .0 100 23.2 24.7 94 PARKER PEAK 9400 .1 .1 100 42.0 29.6 142 SYLVAN LAKE 8420 .0 .0 100 42.3 35.9 118 THUMB DIVIDE 7980 .3 .0 30.6 29.4 104 TWO OCEAN PLATEAU 9240 .2 .0 46.4 43.5 107 WHISKEY CREEK 6800 .0 .0 100 36.8 33.8 109 WHITE MILL 8700 .2 .0 40.8 43.7 93 WOLVERINE 7650 .1 .0 24.3 24.4 100 ----- ----- Basin wide percent of average 100 107 WIND RIVER BURROUGHS CREEK 8750 .1 .0 28.0 28.4 99 COLD SPRINGS 9630 .1 .0 20.4 22.6 90 DEER PARK 9700 .0 .0 100 33.1 36.8 90 HOBBS PARK 10100 .1 .0 27.1 27.0 100 LITTLE WARM 9370 .0 .0 100 25.4 26.0 98 SOUTH PASS 9040 .1 .0 29.6 30.8 96 ST. LAWRENCE ALT 8620 .1 .0 18.6 20.4 91 TOGWOTEE PASS 9580 .0 .0 100 43.2 39.1 110 TOWNSEND CREEK 8700 .1 .0 24.5 24.0 102 ----- ----- Basin wide percent of average * 98 BIGHORN BASIN BALD MTN. 9380 .4 .0 32.1 32.2 100 BEAR TRAP MEADOW 8200 .1 .0 25.0 19.9 126 BLACKWATER 9780 .0 .1 0 40.7 36.8 111 BONE SPRINGS DIV 9350 .0 .1 0 33.3 30.2 110 EVENING STAR 9200 .1 .0 53.5 42.6 126 GRAVE SPRINGS 8550 .1 .0 21.9 21.7 101 KIRWIN 9550 .1 .0 26.2 25.6 102 MARQUETTE 8760 .0 .0 100 26.3 25.6 103 MIDDLE POWDER 7760 .2 .0 23.6 24.8 95 OWL CREEK 8975 .1 .0 17.4 16.8 104 POWDER RIVER PASS 9480 .0 .0 100 30.2 25.9 117 SHELL CREEK 9580 1.3 .1 1300 31.4 27.7 113 SYLVAN LAKE 8420 .0 .0 100 42.3 35.9 118 SYLVAN ROAD 7120 .1 .0 32.7 29.1 112 TIMBER CREEK 7950 .0 .0 100 23.5 20.5 115 YOUNTS PEAK 8350 .0 .0 100 28.3 29.6 96 ----- ----- Basin wide percent of average 433 110 SHOSHONE RIVER BLACKWATER 9780 .0 .1 0 40.7 36.8 111 EVENING STAR 9200 .1 .0 53.5 42.6 126 KIRWIN 9550 .1 .0 26.2 25.6 102 MARQUETTE 8760 .0 .0 100 26.3 25.6 103 SYLVAN LAKE 8420 .0 .0 100 42.3 35.9 118 SYLVAN ROAD 7120 .1 .0 32.7 29.1 112 YOUNTS PEAK 8350 .0 .0 100 28.3 29.6 96 ----- ----- Basin wide percent of average 0 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .0 25.0 19.9 126 BIG GOOSE 7990 .0 .0 100 26.9 21.5 125 BONE SPRINGS DIV 9350 .0 .1 0 33.3 30.2 110 BURGESS JUNCTION 7880 .0 .0 100 30.0 25.1 120 CLOUD PEAK RESERVOIR 9860 .1 .0 35.8 29.3 122 DOME LAKE 8880 .0 .0 100 32.0 27.3 117 GRAVE SPRINGS 8550 .1 .0 21.9 21.7 101 HANSEN SAWMILL 8360 .0 .0 100 27.2 20.9 130 MIDDLE POWDER 7760 .2 .0 23.6 24.8 95 POWDER RIVER PASS 9480 .0 .0 100 30.2 25.9 117 SUCKER CREEK 8880 .1 .0 35.4 28.5 124 TIE CREEK 6870 .0 .0 100 27.8 23.6 118 ----- ----- Basin wide percent of average 0 117 BELLE FOURCHE BLIND PARK 6890 .1 .0 29.8 25.9 115 COLE CANYON 5910 .3 .0 28.9 21.6 134 NORTH RAPID CREEK 6130 .0 .0 100 36.0 24.3 148 ----- ----- Basin wide percent of average * 132 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 39.2 36.9 106 DIVIDE PEAK 8880 .1 .0 34.9 32.1 109 ELK RIVER 8700 .3 .0 33.5 31.2 107 JOE WRIGHT 10120 .1 .0 43.9 42.9 102 NORTH FRENCH CREEK 10130 .0 .0 100 43.8 41.0 107 OLD BATTLE 10000 -M .0 * -M 49.9 * SAGE CREEK BASIN 7850 .0 .0 100 25.2 18.6 135 SOUTH BRUSH CREEK 8440 .1 .0 25.7 29.6 87 TOWER 10500 .0 .0 100 56.2 56.6 99 WEBBER SPRINGS 9250 .0 .0 100 43.8 40.1 109 WILLOW CREEK PASS 9540 .2 .0 26.9 25.3 106 ----- ----- Basin wide percent of average * 105 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 32.9 37.2 88 CASPER MTN. 7900 .0 .0 100 32.3 29.1 111 DEADMAN HILL 10220 .2 .0 31.2 30.3 103 DEER PARK 9700 .0 .0 100 33.1 36.8 90 LAPRELE CREEK 8375 .0 .0 100 24.0 26.5 91 RENO HILL 8400 .0 .0 100 34.6 30.1 115 ROACH 9700 .1 .0 33.6 32.2 104 SAND LAKE 10050 .1 .0 45.3 40.4 112 SOUTH PASS 9040 .1 .0 29.6 30.8 96 WINDY PEAK 7900 .5 .0 23.6 22.8 104 ----- ----- Basin wide percent of average * 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 24.6 24.5 100 DIVIDE PEAK 8880 .1 .0 34.9 32.1 109 OLD BATTLE 10000 -M .0 * -M 49.9 * SANDSTONE RS 8150 -M .0 * 31.6 29.6 107 WHISKEY PARK 8950 .0 .0 100 48.5 43.5 111 ----- ----- Basin wide percent of average * 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 .0 21.0 23.6 89 BLIND BULL SUM 8650 .0 .0 100 26.8 33.2 81 EAST RIM DIVIDE 7930 .0 .0 100 17.0 20.3 84 ELKHART PARK G.S. 9400 .1 .0 19.3 24.9 78 GROS VENTRE SUMMIT 8750 .2 .0 22.0 23.6 93 GUNSIGHT PASS 9820 .3 -M * 23.9 -M * KENDALL R.S. 7740 .0 .0 100 20.2 23.0 88 LOOMIS PARK 8240 .0 .0 100 25.5 27.7 92 NEW FORK LAKE 8340 .2 .0 16.8 20.9 80 SNIDER BASIN 8060 .2 .0 20.6 24.0 86 SPRING CREEK DIVIDE 9000 -M .0 * 34.3 38.1 90 TRIPLE PEAK 8500 -M .0 * 41.5 37.2 112 ----- ----- Basin wide percent of average * 89 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100 16.5 20.9 79 HEWINTA 9519 .0 .0 100 29.5 26.4 112 HICKERSON PARK 9145 .0 .0 100 21.9 18.3 120 HOLE-IN-ROCK 9150 .0 .0 100 19.8 18.2 109 INDIAN CREEK 9425 .4 .0 32.5 37.0 88 KELLEY R.S. 8180 .3 .0 26.2 30.3 86 STEEL CREEK PARK 10200 .9 .0 31.9 29.5 108 ----- ----- Basin wide percent of average * 99 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 25.5 29.1 88 HAYDEN FORK 9212 .0 .0 100 34.2 34.1 100 KELLEY R.S. 8180 .3 .0 26.2 30.3 86 LILY LAKE 9156 .1 .0 27.8 29.4 95 MONTE CRISTO 8960 .0 .0 100 35.0 38.7 90 SALT RIVER SUMMIT 7760 -M .0 * -M 28.5 * TRIAL LAKE 9992 -M .0 * 36.3 40.1 91 ----- ----- Basin wide percent of average * 92 ----------------------------------------------------------------------------- -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.