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 28 , 2011 ----------------------------------------------------------------------------- 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* 41.4 33.0 125 COTTONWOOD CREEK 7670 .0 .0 100* 58.2 42.7 136 GRAND TARGHEE 9260 .0 -M * 66.9 -M * GRANITE CREEK 6770 .0 .0 100* 40.0 30.5 131 GRASSY LAKE 7265 .1 .0 * 67.2 53.6 125 GROS VENTRE SUMMIT 8750 .0 .0 100* 27.0 24.8 109 GUNSIGHT PASS 9820 .0 -M * 33.2 -M * LEWIS LAKE DIVIDE 7850 .1 .0 * 60.0 53.2 113 PHILLIPS BENCH 8200 .1 .0 * 53.7 43.6 123 SALT RIVER SUMMIT 7760 .1 .0 * 35.2 29.5 119 SNAKE RIVER STATION 6920 .0 .0 100* 44.9 35.1 128 SPRING CREEK DIVIDE 9000 .2 .0 * 49.8 39.2 127 THUMB DIVIDE 7980 .1 .0 * 36.6 30.3 121 TOGWOTEE PASS 9580 .0 .0 100* 51.5 40.5 127 TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 44.9 116 WILLOW CREEK 8380 .0 .0 100* 67.0 51.5 130 ----- ----- Basin wide percent of average * 124 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .0 .4 0* 43.4 35.0 124 BLACK BEAR 8170 .0 .2 0* 73.7 59.5 124 CANYON 7870 .0 .1 0* 30.2 27.5 110 FISHER CREEK 9100 .0 .3 0* 62.3 58.0 107 MADISON PLATEAU 7750 .0 .1 0* 53.1 41.9 127 NORTHEAST ENTRANCE 7350 .0 .0 100* 28.2 25.8 109 PARKER PEAK 9400 .0 .5 0* 47.3 30.8 154 SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131 THUMB DIVIDE 7980 .1 .0 * 36.6 30.3 121 TWO OCEAN PLATEAU 9240 .0 .0 100* 52.0 44.9 116 WHISKEY CREEK 6800 .0 .0 100* 42.6 35.1 121 WHITE MILL 8700 .0 .2 0* 45.6 45.2 101 WOLVERINE 7650 .0 .0 100* 27.9 25.5 109 ----- ----- Basin wide percent of average 5* 119 WIND RIVER BURROUGHS CREEK 8750 .0 .2 0* 32.0 29.7 108 CASTLE CREEK 8400 .0 -M * 17.6 -M * COLD SPRINGS 9630 .0 .2 0* 23.7 23.8 100 DEER PARK 9700 .0 .7 0* 38.4 37.8 102 HOBBS PARK 10100 .0 .2 0* 33.0 28.3 117 LITTLE WARM 9370 .0 .1 0* 28.0 27.3 103 SOUTH PASS 9040 .0 .3 0* 29.2 31.8 92 ST. LAWRENCE ALT 8620 .0 .2 0* 23.2 21.4 108 TOGWOTEE PASS 9580 .0 .0 100* 51.5 40.5 127 TOWNSEND CREEK 8700 .0 .1 0* 26.5 25.4 104 ----- ----- Basin wide percent of average 0* 107 BIGHORN BASIN BALD MTN. 9380 .0 .5 0* 38.9 33.7 115 BEAR TRAP MEADOW 8200 .0 .1 0* 23.7 21.2 112 BLACKWATER 9780 .0 .5 0* 46.1 38.4 120 BONE SPRINGS DIV 9350 .0 .4 0* 36.1 32.0 113 EVENING STAR 9200 .0 .4 0* 59.3 44.1 134 GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.7 110 KIRWIN 9550 .0 .4 0* 28.2 27.1 104 MARQUETTE 8760 .0 -M * 22.5 27.2 83 MIDDLE POWDER 7760 .0 .1 0* 26.9 26.2 103 OWL CREEK 8975 .0 .2 0* 16.5 17.9 92 POWDER RIVER PASS 9480 .0 .3 0* 34.4 27.3 126 SHELL CREEK 9580 .0 .7 0* 34.3 29.2 117 SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131 SYLVAN ROAD 7120 .0 .0 100* 35.4 30.1 118 TIMBER CREEK 7950 .0 .2 0* 19.4 21.9 89 YOUNTS PEAK 8350 .0 .1 0* 30.4 31.1 98 ----- ----- Basin wide percent of average 0* 113 SHOSHONE RIVER BLACKWATER 9780 .0 .5 0* 46.1 38.4 120 EVENING STAR 9200 .0 .4 0* 59.3 44.1 134 KIRWIN 9550 .0 .4 0* 28.2 27.1 104 MARQUETTE 8760 .0 -M * 22.5 27.2 83 SYLVAN LAKE 8420 .0 .2 0* 48.7 37.1 131 SYLVAN ROAD 7120 .0 .0 100* 35.4 30.1 118 YOUNTS PEAK 8350 .0 .1 0* 30.4 31.1 98 ----- ----- Basin wide percent of average 0* 115 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .1 0* 23.7 21.2 112 BIG GOOSE 7990 .0 .0 100* 28.9 22.8 127 BONE SPRINGS DIV 9350 .0 .4 0* 36.1 32.0 113 BURGESS JUNCTION 7880 .0 .3 0* 30.7 26.4 116 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 36.5 31.0 118 DOME LAKE 8880 .0 .3 0* 31.8 28.8 110 GRAVE SPRINGS 8550 .0 .1 0* 24.9 22.7 110 HANSEN SAWMILL 8360 .0 .1 0* 25.1 22.1 114 LITTLE GOOSE 8870 .0 -M * 32.8 -M * MIDDLE POWDER 7760 .0 .1 0* 26.9 26.2 103 POWDER RIVER PASS 9480 .0 .3 0* 34.4 27.3 126 SOLDIER PARK 8720 .0 -M * 25.4 -M * SUCKER CREEK 8880 .0 .2 0* 36.4 29.9 122 TIE CREEK 6870 .0 .2 0* 29.9 24.9 120 ----- ----- Basin wide percent of average 0* 116 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 34.1 26.6 128 COLE CANYON 5910 .0 .0 100* 32.8 22.6 145 NORTH RAPID CREEK 6130 .0 .0 100* 32.6 24.9 131 ----- ----- Basin wide percent of average * 134 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 .1 -M * 65.8 -M * CINNABAR PARK 9574 .1 .0 * 53.2 34.1 156 COLUMBINE 9160 .0 .0 100* 54.6 37.9 144 DIVIDE PEAK 8880 .0 .0 100* 46.0 33.2 139 ELK RIVER 8700 .0 .0 100* 43.8 32.2 136 JOE WRIGHT 10120 .0 .0 100* 64.4 44.6 144 NORTH FRENCH CREEK 10130 .0 .0 100* 82.4 42.3 195 OLD BATTLE 10000 .0 .1 0* 74.4 51.3 145 SAGE CREEK BASIN 7850 .0 .0 100* 28.5 19.3 148 SOUTH BRUSH CREEK 8440 .1 .0 * 38.2 30.9 124 TOWER 10500 .0 .0 100* 93.2 58.1 160 WEBBER SPRINGS 9250 .1 .1 100* 56.4 41.5 136 WILLOW CREEK PASS 9540 .0 .0 100* 37.1 26.2 142 ----- ----- Basin wide percent of average 150* 149 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 51.3 38.3 134 CASPER MTN. 7900 .1 .0 * 27.2 30.0 91 DEADMAN HILL 10220 .0 .1 0* 39.8 31.5 126 DEER PARK 9700 .0 .7 0* 38.4 37.8 102 LAPRELE CREEK 8375 .0 .0 100* 26.0 27.4 95 RENO HILL 8400 .0 .0 100* 30.9 31.1 99 ROACH 9700 .0 .0 100* 41.9 33.4 125 SAND LAKE 10050 .1 .2 50* 58.9 41.6 142 SOUTH PASS 9040 .0 .3 0* 29.2 31.8 92 WINDY PEAK 7900 .1 .0 * 22.9 23.7 97 ----- ----- Basin wide percent of average 23* 112 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 31.3 25.3 124 DIVIDE PEAK 8880 .0 .0 100* 46.0 33.2 139 OLD BATTLE 10000 .0 .1 0* 74.4 51.3 145 SANDSTONE RS 8150 .0 .0 100* 43.8 30.6 143 WHISKEY PARK 8950 .0 .0 100* 67.1 44.7 150 ----- ----- Basin wide percent of average 0* 142 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100* 29.3 24.6 119 BLIND BULL SUM 8650 .0 .0 100* 38.7 34.2 113 EAST RIM DIVIDE 7930 .3 .0 * 24.9 21.1 118 ELKHART PARK G.S. 9400 .0 .0 100* 25.8 26.2 98 GROS VENTRE SUMMIT 8750 .0 .0 100* 27.0 24.8 109 GUNSIGHT PASS 9820 .0 -M * 33.2 -M * KENDALL R.S. 7740 .0 .0 100* 26.2 23.9 110 LOOMIS PARK 8240 .1 .0 * 34.9 28.9 121 NEW FORK LAKE 8340 .3 .0 * 20.2 21.9 92 POCKET CREEK 9360 .0 -M * 27.9 -M * SNIDER BASIN 8060 .1 .0 * 29.5 24.8 119 SPRING CREEK DIVIDE 9000 .2 .0 * 49.8 39.2 127 TRIPLE PEAK 8500 .0 .0 100* 53.1 38.3 139 ----- ----- Basin wide percent of average * 117 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 * 26.4 21.7 122 HEWINTA 9519 .0 .0 100* 36.1 27.7 130 HICKERSON PARK 9145 .0 .0 100* 26.6 19.3 138 HOLE-IN-ROCK 9150 .2 .0 * 28.7 19.2 149 INDIAN CREEK 9425 .2 .0 * 42.5 38.0 112 KELLEY R.S. 8180 .0 .0 100* 38.5 31.3 123 STEEL CREEK PARK 10200 -M .2 * 40.5 30.7 132 ----- ----- Basin wide percent of average * 127 UPPER BEAR RIVER BUG LAKE 7950 .0 .1 0* 46.2 30.2 153 HAYDEN FORK 9212 .0 .1 0* 49.7 35.5 140 KELLEY R.S. 8180 .0 .0 100* 38.5 31.3 123 LILY LAKE 9156 .0 .1 0* 41.1 30.5 135 MONTE CRISTO 8960 .1 .1 100* 59.7 40.0 149 SALT RIVER SUMMIT 7760 .1 .0 * 35.2 29.5 119 TRIAL LAKE 9992 .1 .3 33* 54.6 41.6 131 ----- ----- Basin wide percent of average 43* 136 ----------------------------------------------------------------------------- -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.