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: JULY 29 , 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 31.3 30.2 104 COTTONWOOD CREEK 7670 .0 .0 100 48.1 38.9 124 GRAND TARGHEE 9260 .0 -M * 50.8 -M * GRANITE CREEK 6770 .1 .0 31.7 27.8 114 GRASSY LAKE 7265 .0 .0 100 51.2 49.5 103 GROS VENTRE SUMMIT 8750 .0 .0 100 24.9 21.2 117 GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 49.3 49.5 100 PHILLIPS BENCH 8200 .0 .0 100 43.9 40.1 109 SALT RIVER SUMMIT 7760 .0 .0 100 27.6 26.5 104 SNAKE RIVER STATION 6920 .0 .0 100 35.2 32.0 110 SPRING CREEK DIVIDE 9000 .0 .0 100 40.0 35.8 112 THUMB DIVIDE 7980 .1 .0 33.1 27.8 119 TOGWOTEE PASS 9580 .1 .0 45.2 36.6 123 TWO OCEAN PLATEAU 9240 .0 .0 100 46.2 40.9 113 WILLOW CREEK 8380 .0 .0 100 58.7 46.8 125 ----- ----- Basin wide percent of average * 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .1 .0 35.2 31.6 111 BLACK BEAR 8170 .0 .0 100 51.4 55.1 93 CANYON 7870 .0 .0 100 27.3 24.2 113 FISHER CREEK 9100 -M .0 * 51.3 52.9 97 MADISON PLATEAU 7750 .0 .0 100 37.4 38.3 98 NORTHEAST ENTRANCE 7350 .0 .0 100 23.9 22.0 109 PARKER PEAK 9400 .0 .0 100 30.6 27.6 111 SYLVAN LAKE 8420 .0 .0 100 37.8 33.8 112 THUMB DIVIDE 7980 .1 .0 33.1 27.8 119 TWO OCEAN PLATEAU 9240 .0 .0 100 46.2 40.9 113 WHISKEY CREEK 6800 .1 .0 29.8 31.3 95 WHITE MILL 8700 .0 .0 100 38.2 40.6 94 WOLVERINE 7650 .1 .0 23.2 22.0 105 ----- ----- Basin wide percent of average * 104 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 29.4 26.0 113 COLD SPRINGS 9630 .0 .0 100 20.9 20.6 101 DEER PARK 9700 .0 .0 100 31.3 34.6 90 HOBBS PARK 10100 .0 .0 100 26.9 24.9 108 LITTLE WARM 9370 .0 .0 100 26.9 23.8 113 SOUTH PASS 9040 .1 .0 27.3 29.1 94 ST. LAWRENCE ALT 8620 .1 .0 19.3 18.7 103 TOGWOTEE PASS 9580 .1 .0 45.2 36.6 123 TOWNSEND CREEK 8700 .0 .0 100 22.7 22.2 102 ----- ----- Basin wide percent of average * 106 BIGHORN BASIN BALD MTN. 9380 .1 .0 27.5 30.1 91 BEAR TRAP MEADOW 8200 .1 .0 19.7 18.3 108 BLACKWATER 9780 .0 .0 100 37.6 34.3 110 BONE SPRINGS DIV 9350 .0 .0 100 27.1 27.5 99 EVENING STAR 9200 -M .0 * -M 40.1 * GRAVE SPRINGS 8550 .1 .0 16.5 20.3 81 KIRWIN 9550 .0 .0 100 27.8 22.6 123 MARQUETTE 8760 .0 .0 100 19.3 23.0 84 MIDDLE POWDER 7760 .0 .0 100 19.5 23.2 84 OWL CREEK 8975 .1 .0 19.6 14.9 132 POWDER RIVER PASS 9480 .0 .0 100 26.7 24.0 111 SHELL CREEK 9580 .0 .0 100 27.3 25.6 107 SYLVAN LAKE 8420 .0 .0 100 37.8 33.8 112 SYLVAN ROAD 7120 .0 .0 100 31.4 27.1 116 TIMBER CREEK 7950 .0 .0 100 18.6 18.1 103 YOUNTS PEAK 8350 .0 .0 100 27.4 26.7 103 ----- ----- Basin wide percent of average * 104 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100 37.6 34.3 110 EVENING STAR 9200 -M .0 * -M 40.1 * KIRWIN 9550 .0 .0 100 27.8 22.6 123 MARQUETTE 8760 .0 .0 100 19.3 23.0 84 SYLVAN LAKE 8420 .0 .0 100 37.8 33.8 112 SYLVAN ROAD 7120 .0 .0 100 31.4 27.1 116 YOUNTS PEAK 8350 .0 .0 100 27.4 26.7 103 ----- ----- Basin wide percent of average * 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .0 19.7 18.3 108 BIG GOOSE 7990 .0 .0 100 21.6 19.6 110 BONE SPRINGS DIV 9350 .0 .0 100 27.1 27.5 99 BURGESS JUNCTION 7880 .1 .0 23.0 23.2 99 CLOUD PEAK RESERVOIR 9860 .1 .0 29.3 26.9 109 DOME LAKE 8880 .1 .0 26.0 24.9 104 GRAVE SPRINGS 8550 .1 .0 16.5 20.3 81 HANSEN SAWMILL 8360 .0 .0 100 18.3 18.7 98 MIDDLE POWDER 7760 .0 .0 100 19.5 23.2 84 POWDER RIVER PASS 9480 .0 .0 100 26.7 24.0 111 SUCKER CREEK 8880 .0 .0 100 30.1 26.3 114 TIE CREEK 6870 .1 .0 27.3 21.3 128 ----- ----- Basin wide percent of average * 104 BELLE FOURCHE BLIND PARK 6890 .2 .0 25.1 23.5 107 COLE CANYON 5910 .1 .0 23.0 18.9 122 NORTH RAPID CREEK 6130 .2 .0 20.0 21.7 92 ----- ----- Basin wide percent of average * 106 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 37.5 35.0 107 DIVIDE PEAK 8880 -M .0 * 40.6 30.2 134 ELK RIVER 8700 .2 .0 31.9 28.9 110 JOE WRIGHT 10120 -M .0 * 42.1 39.4 107 NORTH FRENCH CREEK 10130 -M .0 * -M 38.6 * OLD BATTLE 10000 .0 .0 100 53.2 47.5 112 SAGE CREEK BASIN 7850 .0 .0 100 23.9 17.5 137 SOUTH BRUSH CREEK 8440 .0 .0 100 26.4 27.2 97 TOWER 10500 -M .0 * 59.1 53.9 110 WEBBER SPRINGS 9250 .0 .0 100 41.5 37.7 110 WILLOW CREEK PASS 9540 .1 .0 22.5 22.6 100 ----- ----- Basin wide percent of average * 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 32.6 34.9 93 CASPER MTN. 7900 .0 .0 100 25.7 27.4 94 DEADMAN HILL 10220 .0 .0 100 27.7 27.8 100 DEER PARK 9700 .0 .0 100 31.3 34.6 90 LAPRELE CREEK 8375 -M .0 * 22.4 23.7 95 RENO HILL 8400 .0 .0 100 27.6 27.9 99 ROACH 9700 .0 .0 100 31.2 29.8 105 SAND LAKE 10050 -M .0 * 43.7 38.2 114 SOUTH PASS 9040 .1 .0 27.3 29.1 94 WINDY PEAK 7900 -M .0 * 21.6 20.7 104 ----- ----- Basin wide percent of average * 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 28.1 23.0 122 DIVIDE PEAK 8880 -M .0 * 40.6 30.2 134 OLD BATTLE 10000 .0 .0 100 53.2 47.5 112 SANDSTONE RS 8150 -M .0 * 30.7 27.5 112 WHISKEY PARK 8950 .0 .0 100 47.2 41.3 114 ----- ----- Basin wide percent of average * 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 25.9 21.6 120 BLIND BULL SUM 8650 .0 .0 100 32.2 31.0 104 EAST RIM DIVIDE 7930 .0 .0 100 21.1 18.4 115 ELKHART PARK G.S. 9400 .0 .0 100 27.1 22.2 122 GROS VENTRE SUMMIT 8750 .0 .0 100 24.9 21.2 117 GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .0 .0 100 23.3 21.1 110 LOOMIS PARK 8240 .1 .0 30.0 25.1 120 NEW FORK LAKE 8340 .0 .0 100 20.5 18.8 109 SNIDER BASIN 8060 .0 .0 100 23.2 22.4 104 SPRING CREEK DIVIDE 9000 .0 .0 100 40.0 35.8 112 TRIPLE PEAK 8500 .0 .0 100 40.9 35.1 117 ----- ----- Basin wide percent of average * 113 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 22.3 19.4 115 HEWINTA 9519 .0 .0 100 22.3 23.7 94 HICKERSON PARK 9145 .0 .0 100 21.4 15.5 138 HOLE-IN-ROCK 9150 .0 .0 100 18.5 15.3 121 INDIAN CREEK 9425 .0 .0 100 33.4 35.0 95 KELLEY R.S. 8180 .0 .0 100 29.6 28.6 103 STEEL CREEK PARK 10200 .0 .0 100 26.9 26.7 101 ----- ----- Basin wide percent of average * 106 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 26.9 27.3 99 HAYDEN FORK 9212 .0 .0 100 32.6 31.5 103 KELLEY R.S. 8180 .0 .0 100 29.6 28.6 103 LILY LAKE 9156 .0 .0 100 27.2 26.9 101 MONTE CRISTO 8960 .0 .0 100 38.7 36.6 106 SALT RIVER SUMMIT 7760 .0 .0 100 27.6 26.5 104 TRIAL LAKE 9992 .0 .0 100 37.5 36.8 102 ----- ----- Basin wide percent of average * 103 ----------------------------------------------------------------------------- -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.