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 THURSDAY: SEPTEMBER 1 , 2011 ----------------------------------------------------------------------------- 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 * 40.2 31.6 127 COTTONWOOD CREEK 7670 .0 .0 100* 57.3 40.8 140 GRAND TARGHEE 9260 .0 -M * 64.1 -M * GRANITE CREEK 6770 .0 .0 100* 39.3 29.2 135 GRASSY LAKE 7265 .0 .0 100* 66.1 51.4 129 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.7 23.0 116 GUNSIGHT PASS 9820 .0 -M * 32.7 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100* 59.5 51.3 116 PHILLIPS BENCH 8200 .0 .0 100* 53.3 41.8 128 SALT RIVER SUMMIT 7760 .0 .0 100* 34.2 28.0 122 SNAKE RIVER STATION 6920 .0 .0 100* 44.5 33.6 132 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.5 * THUMB DIVIDE 7980 .1 .0 * 36.1 29.1 124 TOGWOTEE PASS 9580 .0 .0 100* 51.0 38.5 132 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.9 120 WILLOW CREEK 8380 .0 .0 100* 66.1 49.1 135 ----- ----- Basin wide percent of average * 128 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .0 100* 43.2 33.4 129 BLACK BEAR 8170 .0 .0 100* 73.2 57.3 128 CANYON 7870 .0 .0 100* 29.8 26.0 115 FISHER CREEK 9100 .0 .0 100* 61.5 55.5 111 MADISON PLATEAU 7750 .0 .0 100* 52.3 40.1 130 NORTHEAST ENTRANCE 7350 .0 .0 100* 27.8 24.1 115 PARKER PEAK 9400 .0 .0 100* 46.5 29.2 159 SYLVAN LAKE 8420 .0 .0 100* 48.1 35.4 136 THUMB DIVIDE 7980 .1 .0 * 36.1 29.1 124 TWO OCEAN PLATEAU 9240 .0 .0 100* 51.3 42.9 120 WHISKEY CREEK 6800 .0 .0 100* 40.5 33.1 122 WHITE MILL 8700 .0 .0 100* 44.9 43.0 104 WOLVERINE 7650 .0 .0 100* 27.3 23.9 114 ----- ----- Basin wide percent of average * 123 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 31.7 27.8 114 CASTLE CREEK 8400 .0 -M * 17.3 -M * COLD SPRINGS 9630 .0 .0 100* 22.8 22.0 104 DEER PARK 9700 .0 .0 100* 37.8 36.1 105 HOBBS PARK 10100 .0 .0 100* 31.0 26.5 117 LITTLE WARM 9370 .0 .0 100* 27.5 25.4 108 SOUTH PASS 9040 .0 .0 100* 28.5 30.4 94 ST. LAWRENCE ALT 8620 .0 .0 100* 22.5 20.0 113 TOGWOTEE PASS 9580 .0 .0 100* 51.0 38.5 132 TOWNSEND CREEK 8700 .0 .0 100* 25.4 23.5 108 ----- ----- Basin wide percent of average * 111 BIGHORN BASIN BALD MTN. 9380 .0 .0 100* 38.1 31.6 121 BEAR TRAP MEADOW 8200 .0 .0 100* 22.9 19.4 118 BLACKWATER 9780 .0 .0 100* 44.8 36.2 124 BONE SPRINGS DIV 9350 .0 .0 100* 35.5 29.5 120 EVENING STAR 9200 .0 .0 100* 58.2 42.0 139 GRAVE SPRINGS 8550 .0 .0 100* 24.3 21.3 114 KIRWIN 9550 .0 .0 100* 27.0 24.8 109 MARQUETTE 8760 .0 -M * 22.1 24.9 89 MIDDLE POWDER 7760 .0 .0 100* 25.5 24.3 105 OWL CREEK 8975 .0 .0 100* 16.4 16.3 101 POWDER RIVER PASS 9480 .0 .0 100* 33.7 25.4 133 SHELL CREEK 9580 .0 .0 100* 33.8 27.1 125 SYLVAN LAKE 8420 .0 .0 100* 48.1 35.4 136 SYLVAN ROAD 7120 .0 .0 100* 35.4 28.6 124 TIMBER CREEK 7950 .0 .0 100* 19.2 19.9 96 YOUNTS PEAK 8350 .0 .0 100* 29.9 28.9 103 ----- ----- Basin wide percent of average * 118 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 44.8 36.2 124 EVENING STAR 9200 .0 .0 100* 58.2 42.0 139 KIRWIN 9550 .0 .0 100* 27.0 24.8 109 MARQUETTE 8760 .0 -M * 22.1 24.9 89 SYLVAN LAKE 8420 .0 .0 100* 48.1 35.4 136 SYLVAN ROAD 7120 .0 .0 100* 35.4 28.6 124 YOUNTS PEAK 8350 .0 .0 100* 29.9 28.9 103 ----- ----- Basin wide percent of average * 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100* 22.9 19.4 118 BIG GOOSE 7990 .0 .0 100* 28.2 21.0 134 BONE SPRINGS DIV 9350 .0 .0 100* 35.5 29.5 120 BURGESS JUNCTION 7880 .0 .0 100* 30.6 24.6 124 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.4 28.7 123 DOME LAKE 8880 .0 .0 100* 31.2 26.7 117 GRAVE SPRINGS 8550 .0 .0 100* 24.3 21.3 114 HANSEN SAWMILL 8360 .0 .0 100* 24.4 20.3 120 LITTLE GOOSE 8870 .0 -M * 32.4 -M * MIDDLE POWDER 7760 .0 .0 100* 25.5 24.3 105 POWDER RIVER PASS 9480 .0 .0 100* 33.7 25.4 133 SOLDIER PARK 8720 .0 -M * 24.4 -M * SUCKER CREEK 8880 .0 .0 100* 35.9 27.9 129 TIE CREEK 6870 .0 .0 100* 29.5 23.1 128 ----- ----- Basin wide percent of average * 122 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 33.4 25.5 131 COLE CANYON 5910 .0 .0 100* 31.7 21.2 150 NORTH RAPID CREEK 6130 .0 .0 100* 32.0 24.1 133 ----- ----- Basin wide percent of average * 137 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .0 -M * 63.4 -M * CINNABAR PARK 9574 .1 .0 * 51.8 31.6 164 COLUMBINE 9160 .0 .0 100* 52.8 36.5 145 DIVIDE PEAK 8880 .0 .0 100* 44.6 31.7 141 ELK RIVER 8700 .0 .0 100* 41.5 30.7 135 JOE WRIGHT 10120 .0 .0 100* 61.7 42.2 146 NORTH FRENCH CREEK 10130 .0 .0 100* 80.6 40.5 199 OLD BATTLE 10000 .0 .0 100* 72.2 49.3 146 SAGE CREEK BASIN 7850 .0 .0 100* 28.4 18.4 154 SOUTH BRUSH CREEK 8440 .0 .0 100* 37.3 29.0 129 TOWER 10500 .2 .0 * 90.4 56.0 161 WEBBER SPRINGS 9250 .1 .0 * 55.0 39.5 139 WILLOW CREEK PASS 9540 .0 .0 100* 35.6 24.8 144 ----- ----- Basin wide percent of average * 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 50.0 36.7 136 CASPER MTN. 7900 .0 .0 100* 27.4 28.7 95 DEADMAN HILL 10220 .0 .0 100* 38.8 29.8 130 DEER PARK 9700 .0 .0 100* 37.8 36.1 105 LAPRELE CREEK 8375 .0 .0 100* 25.8 26.0 99 RENO HILL 8400 .0 .0 100* 30.7 29.7 103 ROACH 9700 .0 .0 100* 40.5 31.8 127 SAND LAKE 10050 .0 .0 100* 57.8 40.0 145 SOUTH PASS 9040 .0 .0 100* 28.5 30.4 94 WINDY PEAK 7900 .0 .0 100* 22.8 22.4 102 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .0 * -M 24.1 * DIVIDE PEAK 8880 .0 .0 100* 44.6 31.7 141 OLD BATTLE 10000 .0 .0 100* 72.2 49.3 146 SANDSTONE RS 8150 .0 .0 100* 42.5 29.2 146 WHISKEY PARK 8950 .0 .0 100* 64.9 43.0 151 ----- ----- Basin wide percent of average * 146 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 .0 * 27.9 23.1 121 BLIND BULL SUM 8650 .0 .0 100* 37.6 32.7 115 EAST RIM DIVIDE 7930 .2 .0 * 24.5 19.9 123 ELKHART PARK G.S. 9400 .0 .0 100* 24.8 24.2 102 GROS VENTRE SUMMIT 8750 .0 .0 100* 26.7 23.0 116 GUNSIGHT PASS 9820 .0 -M * 32.7 -M * KENDALL R.S. 7740 .0 .0 100* 24.9 22.5 111 LOOMIS PARK 8240 .1 .0 * 34.3 27.1 127 NEW FORK LAKE 8340 .2 .0 * 19.3 20.4 95 POCKET CREEK 9360 .0 -M * 26.5 -M * SNIDER BASIN 8060 .0 .0 100* 29.2 23.6 124 SPRING CREEK DIVIDE 9000 -M .0 * -M 37.5 * TRIPLE PEAK 8500 .0 .0 100* 52.4 36.7 143 ----- ----- Basin wide percent of average * 119 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 * 25.8 20.6 125 HEWINTA 9519 .0 .0 100* 34.6 25.8 134 HICKERSON PARK 9145 .0 .0 100* 25.0 17.8 140 HOLE-IN-ROCK 9150 .3 .0 * 27.4 17.7 155 INDIAN CREEK 9425 .2 .0 * 42.0 36.5 115 KELLEY R.S. 8180 .0 .0 100* 37.5 29.9 125 STEEL CREEK PARK 10200 .0 .0 100* 38.9 28.9 135 ----- ----- Basin wide percent of average * 130 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 45.4 28.7 158 HAYDEN FORK 9212 .0 .0 100* 48.4 33.5 144 KELLEY R.S. 8180 .0 .0 100* 37.5 29.9 125 LILY LAKE 9156 .0 .0 100* 39.6 28.9 137 MONTE CRISTO 8960 .0 .0 100* 58.5 38.1 154 SALT RIVER SUMMIT 7760 .0 .0 100* 34.2 28.0 122 TRIAL LAKE 9992 .0 .0 100* 53.4 39.4 136 ----- ----- Basin wide percent of average * 140 ----------------------------------------------------------------------------- -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 1971-2000. 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.