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 SUNDAY: SEPTEMBER 28 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .3 .0 36.4 33.0 110 COTTONWOOD CREEK 7670 .0 .0 100 36.1 42.7 85 GRAND TARGHEE 9260 .0 -M * 52.1 -M * GRANITE CREEK 6770 .1 .0 34.6 30.5 113 GRASSY LAKE 7265 .1 .0 58.9 53.6 110 GROS VENTRE SUMMIT 8750 .1 .0 22.9 24.8 92 GUNSIGHT PASS 9820 .3 -M * 25.1 -M * LEWIS LAKE DIVIDE 7850 .0 .0 100 50.3 53.2 95 PHILLIPS BENCH 8200 .0 .0 100 47.6 43.6 109 SALT RIVER SUMMIT 7760 .0 .0 100 24.8 29.5 84 SNAKE RIVER STATION 6920 .2 .0 38.1 35.1 109 SPRING CREEK DIVIDE 9000 .0 .0 100 34.7 39.2 89 THUMB DIVIDE 7980 .3 .0 30.8 30.3 102 TOGWOTEE PASS 9580 .0 .0 100 44.1 40.5 109 TWO OCEAN PLATEAU 9240 .3 .0 47.1 44.9 105 WILLOW CREEK 8380 .5 .0 57.5 51.5 112 ----- ----- Basin wide percent of average * 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 .1 .4 25 37.7 35.0 108 BLACK BEAR 8170 .0 .2 0 59.2 59.5 99 CANYON 7870 .0 .1 0 30.3 27.5 110 FISHER CREEK 9100 .1 .3 33 57.0 58.0 98 MADISON PLATEAU 7750 .0 .1 0 45.7 41.9 109 NORTHEAST ENTRANCE 7350 .0 .0 100 23.6 25.8 91 PARKER PEAK 9400 .0 .5 0 42.7 30.8 139 SYLVAN LAKE 8420 .0 .2 0 42.6 37.1 115 THUMB DIVIDE 7980 .3 .0 30.8 30.3 102 TWO OCEAN PLATEAU 9240 .3 .0 47.1 44.9 105 WHISKEY CREEK 6800 .0 .0 100 37.1 35.1 106 WHITE MILL 8700 .1 .2 50 41.3 45.2 91 WOLVERINE 7650 .1 .0 24.8 25.5 97 ----- ----- Basin wide percent of average 15 105 WIND RIVER BURROUGHS CREEK 8750 .1 .2 50 28.9 29.7 97 COLD SPRINGS 9630 .1 .2 50 21.2 23.8 89 DEER PARK 9700 .0 .7 0 34.1 37.8 90 HOBBS PARK 10100 .1 .2 50 27.8 28.3 98 LITTLE WARM 9370 .0 .1 0 26.2 27.3 96 SOUTH PASS 9040 .1 .3 33 30.4 31.8 96 ST. LAWRENCE ALT 8620 .1 .2 50 18.9 21.4 88 TOGWOTEE PASS 9580 .0 .0 100 44.1 40.5 109 TOWNSEND CREEK 8700 .1 .1 100 24.8 25.4 98 ----- ----- Basin wide percent of average 30 96 BIGHORN BASIN BALD MTN. 9380 .0 .5 0 32.9 33.7 98 BEAR TRAP MEADOW 8200 .1 .1 100 25.9 21.2 122 BLACKWATER 9780 .0 .5 0 41.3 38.4 108 BONE SPRINGS DIV 9350 .0 .4 0 34.4 32.0 108 EVENING STAR 9200 .1 .4 25 54.2 44.1 123 GRAVE SPRINGS 8550 .1 .1 100 22.2 22.7 98 KIRWIN 9550 .1 .4 25 27.0 27.1 100 MARQUETTE 8760 .0 .3 0 26.5 27.2 97 MIDDLE POWDER 7760 .3 .1 300 24.1 26.1 92 OWL CREEK 8975 .1 .2 50 17.7 17.9 99 POWDER RIVER PASS 9480 .0 .3 0 31.0 27.3 114 SHELL CREEK 9580 .1 .7 14 32.8 29.1 113 SYLVAN LAKE 8420 .0 .2 0 42.6 37.1 115 SYLVAN ROAD 7120 .1 .0 33.0 30.1 110 TIMBER CREEK 7950 .0 .2 0 23.9 21.9 109 YOUNTS PEAK 8350 .0 .1 0 29.0 31.1 93 ----- ----- Basin wide percent of average 20 107 SHOSHONE RIVER BLACKWATER 9780 .0 .5 0 41.3 38.4 108 EVENING STAR 9200 .1 .4 25 54.2 44.1 123 KIRWIN 9550 .1 .4 25 27.0 27.1 100 MARQUETTE 8760 .0 .3 0 26.5 27.2 97 SYLVAN LAKE 8420 .0 .2 0 42.6 37.1 115 SYLVAN ROAD 7120 .1 .0 33.0 30.1 110 YOUNTS PEAK 8350 .0 .1 0 29.0 31.1 93 ----- ----- Basin wide percent of average 11 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .1 100 25.9 21.2 122 BIG GOOSE 7990 .0 .0 100 27.7 22.8 121 BONE SPRINGS DIV 9350 .0 .4 0 34.4 32.0 108 BURGESS JUNCTION 7880 .0 .3 0 30.6 26.4 116 CLOUD PEAK RESERVOIR 9860 .1 .0 36.3 31.0 117 DOME LAKE 8880 .0 .3 0 33.4 28.8 116 GRAVE SPRINGS 8550 .1 .1 100 22.2 22.7 98 HANSEN SAWMILL 8360 .0 .1 0 28.3 22.1 128 MIDDLE POWDER 7760 .3 .1 300 24.1 26.1 92 POWDER RIVER PASS 9480 .0 .3 0 31.0 27.3 114 SUCKER CREEK 8880 .0 .2 0 36.0 29.9 120 TIE CREEK 6870 .0 .2 0 28.3 24.9 114 ----- ----- Basin wide percent of average 24 114 BELLE FOURCHE BLIND PARK 6890 .1 .0 30.5 26.6 115 COLE CANYON 5910 .4 .0 29.7 22.6 131 NORTH RAPID CREEK 6130 .0 .0 100 36.5 24.9 147 ----- ----- Basin wide percent of average * 130 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 .0 100 -M 37.9 * DIVIDE PEAK 8880 .1 .0 36.9 33.2 111 ELK RIVER 8700 .4 .0 35.0 32.2 109 JOE WRIGHT 10120 .2 .0 -M 44.6 * NORTH FRENCH CREEK 10130 .0 .0 100 45.7 42.3 108 OLD BATTLE 10000 2.4 .1 2400 57.0 51.3 111 SAGE CREEK BASIN 7850 .0 .0 100 26.8 19.3 139 SOUTH BRUSH CREEK 8440 .1 .0 27.9 30.9 90 TOWER 10500 .0 .0 100 57.5 58.1 99 WEBBER SPRINGS 9250 .0 .1 0 46.2 41.5 111 WILLOW CREEK PASS 9540 .1 .0 29.2 26.2 111 ----- ----- Basin wide percent of average 1200 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100 33.7 38.3 88 CASPER MTN. 7900 .0 .0 100 33.3 30.0 111 DEADMAN HILL 10220 .1 .1 100 32.3 31.5 103 DEER PARK 9700 .0 .7 0 34.1 37.8 90 LAPRELE CREEK 8375 -M .0 * 24.5 27.4 89 RENO HILL 8400 .0 .0 100 35.4 31.1 114 ROACH 9700 .0 .0 100 35.4 33.4 106 SAND LAKE 10050 .1 .2 50 47.3 41.6 114 SOUTH PASS 9040 .1 .3 33 30.4 31.8 96 WINDY PEAK 7900 .3 .0 23.9 23.7 101 ----- ----- Basin wide percent of average 23 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 25.9 25.3 102 DIVIDE PEAK 8880 .1 .0 36.9 33.2 111 OLD BATTLE 10000 2.4 .1 2400 57.0 51.3 111 SANDSTONE RS 8150 -M .0 * 33.8 30.6 110 WHISKEY PARK 8950 .0 .0 100 50.1 44.7 112 ----- ----- Basin wide percent of average 2400 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 .0 22.3 24.6 91 BLIND BULL SUM 8650 1.9 .0 28.3 34.2 83 EAST RIM DIVIDE 7930 1.8 .0 17.9 21.1 85 ELKHART PARK G.S. 9400 .1 .0 20.6 26.2 79 GROS VENTRE SUMMIT 8750 .1 .0 22.9 24.8 92 GUNSIGHT PASS 9820 .3 -M * 25.1 -M * KENDALL R.S. 7740 .0 .0 100 20.9 23.9 87 LOOMIS PARK 8240 .0 .0 100 26.4 28.9 91 NEW FORK LAKE 8340 .2 .0 17.8 21.9 81 SNIDER BASIN 8060 .2 .0 20.9 24.8 84 SPRING CREEK DIVIDE 9000 .0 .0 100 34.7 39.2 89 TRIPLE PEAK 8500 2.3 .0 42.6 38.3 111 ----- ----- Basin wide percent of average * 89 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100 17.6 21.7 81 HEWINTA 9519 1.1 .0 29.8 27.7 108 HICKERSON PARK 9145 .0 .0 100 22.2 19.3 115 HOLE-IN-ROCK 9150 .0 .0 100 20.4 19.2 106 INDIAN CREEK 9425 .1 .0 33.1 38.0 87 KELLEY R.S. 8180 .2 .0 26.6 31.3 85 STEEL CREEK PARK 10200 1.5 .2 750 32.3 30.7 105 ----- ----- Basin wide percent of average 750 97 UPPER BEAR RIVER BUG LAKE 7950 .0 .1 0 25.9 30.2 86 HAYDEN FORK 9212 .0 .1 0 35.3 35.5 99 KELLEY R.S. 8180 .2 .0 26.6 31.3 85 LILY LAKE 9156 .1 .1 100 28.7 30.5 94 MONTE CRISTO 8960 .0 .1 0 35.8 40.0 89 SALT RIVER SUMMIT 7760 .0 .0 100 24.8 29.5 84 TRIAL LAKE 9992 .1 .3 33 37.2 41.6 89 ----- ----- Basin wide percent of average 29 90 ----------------------------------------------------------------------------- -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.