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 MONDAY: JULY 13 , 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 30.4 29.4 103 COTTONWOOD CREEK 7670 .0 .0 100 -M 38.3 * GRAND TARGHEE 9260 .0 -M * 50.6 -M * GRANITE CREEK 6770 -M .0 * 31.4 27.1 116 GRASSY LAKE 7265 .2 .0 47.6 48.7 98 GROS VENTRE SUMMIT 8750 -M .0 * -M 20.3 * GUNSIGHT PASS 9820 -M -M * -M -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 48.9 48.7 100 PHILLIPS BENCH 8200 .2 .0 42.8 39.3 109 SALT RIVER SUMMIT 7760 .0 .0 100 -M 25.9 * SNAKE RIVER STATION 6920 -M .0 * 34.8 31.2 112 SPRING CREEK DIVIDE 9000 .0 .0 100 -M 35.2 * THUMB DIVIDE 7980 .2 .0 32.6 27.3 119 TOGWOTEE PASS 9580 .1 .0 44.1 35.5 124 TWO OCEAN PLATEAU 9240 .0 .0 100 45.8 39.9 115 WILLOW CREEK 8380 .2 .0 -M 45.8 * ----- ----- Basin wide percent of average * 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .7 0 34.3 30.6 112 BLACK BEAR 8170 .0 .0 100 51.1 54.2 94 CANYON 7870 .0 .0 100 26.6 23.3 114 FISHER CREEK 9100 .0 .2 0 50.3 51.5 98 MADISON PLATEAU 7750 .0 .0 100 36.6 37.5 98 NORTHEAST ENTRANCE 7350 .0 .0 100 23.0 21.0 110 PARKER PEAK 9400 .0 .9 0 29.9 26.7 112 SYLVAN LAKE 8420 .0 .0 100 36.7 32.8 112 THUMB DIVIDE 7980 .2 .0 32.6 27.3 119 TWO OCEAN PLATEAU 9240 .0 .0 100 45.8 39.9 115 WHISKEY CREEK 6800 .1 .0 30.3 30.6 99 WHITE MILL 8700 .0 .0 100 37.6 39.4 95 WOLVERINE 7650 .1 .0 21.5 21.1 102 ----- ----- Basin wide percent of average 0 105 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100 29.1 25.2 115 COLD SPRINGS 9630 .0 .0 100 20.5 19.8 104 DEER PARK 9700 .0 .0 100 31.1 33.9 92 HOBBS PARK 10100 .0 .0 100 26.4 24.0 110 LITTLE WARM 9370 .0 .0 100 26.3 22.8 115 SOUTH PASS 9040 .0 .0 100 26.9 28.5 94 ST. LAWRENCE ALT 8620 .0 .0 100 19.1 17.9 107 TOGWOTEE PASS 9580 .1 .0 44.1 35.5 124 TOWNSEND CREEK 8700 .0 .0 100 22.7 21.5 106 ----- ----- Basin wide percent of average * 107 BIGHORN BASIN BALD MTN. 9380 .0 .1 0 26.8 29.0 92 BEAR TRAP MEADOW 8200 -M .0 * -M 17.5 * BLACKWATER 9780 .0 1.2 0 37.1 33.1 112 BONE SPRINGS DIV 9350 .0 .0 100 25.1 26.3 95 EVENING STAR 9200 .0 1.3 0 44.5 38.8 115 GRAVE SPRINGS 8550 .0 .0 100 16.2 19.4 84 KIRWIN 9550 .0 .0 100 26.4 21.2 125 MARQUETTE 8760 .0 .0 100 17.8 21.8 82 MIDDLE POWDER 7760 .0 .0 100 18.6 22.4 83 OWL CREEK 8975 .0 .0 100 18.7 14.0 134 POWDER RIVER PASS 9480 .0 .0 100 25.9 23.1 112 SHELL CREEK 9580 .0 .0 100 26.1 24.6 106 SYLVAN LAKE 8420 .0 .0 100 36.7 32.8 112 SYLVAN ROAD 7120 .0 .0 100 30.4 26.4 115 TIMBER CREEK 7950 .0 .0 100 18.0 17.2 105 YOUNTS PEAK 8350 .0 .0 100 26.4 25.5 104 ----- ----- Basin wide percent of average 0 105 SHOSHONE RIVER BLACKWATER 9780 .0 1.2 0 37.1 33.1 112 EVENING STAR 9200 .0 1.3 0 44.5 38.8 115 KIRWIN 9550 .0 .0 100 26.4 21.2 125 MARQUETTE 8760 .0 .0 100 17.8 21.8 82 SYLVAN LAKE 8420 .0 .0 100 36.7 32.8 112 SYLVAN ROAD 7120 .0 .0 100 30.4 26.4 115 YOUNTS PEAK 8350 .0 .0 100 26.4 25.5 104 ----- ----- Basin wide percent of average 0 110 POWDER-TONGUE BEAR TRAP MEADOW 8200 -M .0 * -M 17.5 * BIG GOOSE 7990 .0 .0 100 20.3 18.7 109 BONE SPRINGS DIV 9350 .0 .0 100 25.1 26.3 95 BURGESS JUNCTION 7880 .0 .0 100 21.1 22.0 96 CLOUD PEAK RESERVOIR 9860 .0 .0 100 27.5 25.7 107 DOME LAKE 8880 .0 .0 100 24.5 23.9 103 GRAVE SPRINGS 8550 .0 .0 100 16.2 19.4 84 HANSEN SAWMILL 8360 .0 .0 100 18.2 17.7 103 MIDDLE POWDER 7760 .0 .0 100 18.6 22.4 83 POWDER RIVER PASS 9480 .0 .0 100 25.9 23.1 112 SUCKER CREEK 8880 .0 .0 100 27.9 25.3 110 TIE CREEK 6870 .0 .0 100 24.4 20.6 118 ----- ----- Basin wide percent of average * 102 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 24.5 22.0 111 COLE CANYON 5910 .0 .0 100 22.1 17.5 126 NORTH RAPID CREEK 6130 .0 .0 100 19.8 19.4 102 ----- ----- Basin wide percent of average * 113 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 37.2 34.2 109 DIVIDE PEAK 8880 .0 .0 100 39.1 29.4 133 ELK RIVER 8700 .2 .0 31.3 28.1 111 JOE WRIGHT 10120 .0 .0 100 41.6 38.1 109 NORTH FRENCH CREEK 10130 -M .0 * -M 37.4 * OLD BATTLE 10000 .0 .0 100 -M 46.6 * SAGE CREEK BASIN 7850 .0 .0 100 23.3 17.1 136 SOUTH BRUSH CREEK 8440 .0 .0 100 26.3 26.3 100 TOWER 10500 .0 2.4 0 58.8 53.0 111 WEBBER SPRINGS 9250 .0 .0 100 41.0 36.9 111 WILLOW CREEK PASS 9540 .1 .0 22.3 21.7 103 ----- ----- Basin wide percent of average 0 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M .0 * 33.6 33.9 99 CASPER MTN. 7900 .0 .0 100 25.0 26.6 94 DEADMAN HILL 10220 .1 .0 27.3 26.9 101 DEER PARK 9700 .0 .0 100 31.1 33.9 92 LAPRELE CREEK 8375 .0 .0 100 21.5 22.6 95 RENO HILL 8400 .0 .0 100 26.9 27.0 100 ROACH 9700 .0 .0 100 30.7 28.9 106 SAND LAKE 10050 .0 .2 0 43.9 37.3 118 SOUTH PASS 9040 .0 .0 100 26.9 28.5 94 WINDY PEAK 7900 .3 .0 20.1 19.7 102 ----- ----- Basin wide percent of average 0 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 28.1 22.5 125 DIVIDE PEAK 8880 .0 .0 100 39.1 29.4 133 OLD BATTLE 10000 .0 .0 100 -M 46.6 * SANDSTONE RS 8150 -M .0 * 30.6 26.7 115 WHISKEY PARK 8950 -M .0 * 47.1 40.4 117 ----- ----- Basin wide percent of average * 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 -M 20.9 * BLIND BULL SUM 8650 .0 .0 100 -M 30.3 * EAST RIM DIVIDE 7930 .0 .0 100 -M 17.8 * ELKHART PARK G.S. 9400 -M .0 * -M 21.4 * GROS VENTRE SUMMIT 8750 -M .0 * -M 20.3 * GUNSIGHT PASS 9820 -M -M * -M -M * KENDALL R.S. 7740 .0 .0 100 -M 20.6 * LOOMIS PARK 8240 .1 .0 -M 24.4 * NEW FORK LAKE 8340 -M .0 * -M 18.1 * SNIDER BASIN 8060 .0 .0 100 -M 22.0 * SPRING CREEK DIVIDE 9000 .0 .0 100 -M 35.2 * TRIPLE PEAK 8500 1.8 .0 -M 34.4 * ----- ----- Basin wide percent of average * * LOWER GREEN RIVER HAMS FORK 7840 .1 .0 -M 18.8 * HEWINTA 9519 .0 .0 100 21.6 22.6 96 HICKERSON PARK 9145 .0 .0 100 20.7 14.6 142 HOLE-IN-ROCK 9150 .0 .0 100 17.9 14.5 123 INDIAN CREEK 9425 -M .0 * -M 34.4 * KELLEY R.S. 8180 .0 .0 100 -M 28.1 * STEEL CREEK PARK 10200 .0 .0 100 25.9 25.6 101 ----- ----- Basin wide percent of average * 111 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100 26.9 26.8 100 HAYDEN FORK 9212 .0 .0 100 32.8 30.7 107 KELLEY R.S. 8180 .0 .0 100 -M 28.1 * LILY LAKE 9156 .0 .0 100 27.0 26.1 103 MONTE CRISTO 8960 -M .0 * 38.4 36.0 107 SALT RIVER SUMMIT 7760 .0 .0 100 -M 25.9 * TRIAL LAKE 9992 .0 .0 100 37.4 35.8 104 ----- ----- Basin wide percent of average * 105 ----------------------------------------------------------------------------- -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.