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: MAY 11 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 8.2 1 17.4 25.3 69 COTTONWOOD CREEK 7600 10.6 15.6 68 27.6 33.2 83 GRANITE CREEK 6770 1.4 9.2 15 18.3 23.2 79 GRASSY LAKE 7265 13.8 28.5 48 29.1 42.3 69 GROS VENTRE SUMMIT 8750 9.7 10.9 89 13.8 16.1 86 LEWIS LAKE DIVIDE 7850 14.9 30.6 49 25.7 42.8 60 PHILLIPS BENCH 8200 19.8 25.6 77 26.8 34.2 78 SALT RIVER SUMMIT 7600 6.9 6.5 106 20.7 22.4 92 SNAKE RIVER STATION 6920 .3 7.6 4 16.1 26.4 61 SPRING CREEK DIVIDE 9000 25.4 25.8 98 26.9 31.1 86 THUMB DIVIDE 7980 4.6 11.2 41 15.6 22.9 68 TOGWOTEE PASS 9580 18.6 27.5 68 20.6 30.2 68 TWO OCEAN PLATEAU 9240 26.6 31.0 86 22.4 33.5 67 WILLOW CREEK 8450 19.2 26.8 72 36.7 39.3 93 ----- ----- Basin wide percent of average 65 75 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.7 25.6 69 17.2 24.6 70 BLACK BEAR 8170 33.3 37.5 89 35.7 47.3 75 CANYON 8090 3.6 8.3 43 12.6 18.6 68 FISHER CREEK 9100 24.9 36.9 67 28.9 43.4 67 MADISON PLATEAU 7750 16.5 20.8 79 24.5 31.7 77 NORTHEAST ENTRANCE 7350 .1 4.4 2 9.7 15.7 62 PARKER PEAK 9400 17.2 24.1 71 16.3 20.7 79 SYLVAN LAKE 8420 9.2 21.3 43 20.2 26.1 77 THUMB DIVIDE 7980 4.6 11.2 41 15.6 22.9 68 TWO OCEAN PLATEAU 9240 26.6 31.0 86 22.4 33.5 67 WHISKEY CREEK 6800 8.4 11.3 74 18.9 25.2 75 WHITE MILL 8700 18.3 25.2 73 18.9 32.5 58 WOLVERINE 7650 .2 4.3 5 9.9 16.2 61 ----- ----- Basin wide percent of average 69 70 WIND RIVER BURROUGHS CREEK 8750 11.1 11.3 98 14.1 20.4 69 COLD SPRINGS 9630 2.5 3.7 68 12.1 14.9 81 DEER PARK 9700 26.4 17.6 150 30.6 28.3 108 HOBBS PARK 10100 19.1 17.1 112 19.4 18.2 107 LITTLE WARM 9370 6.8 8.7 78 13.0 17.8 73 SOUTH PASS 9040 19.1 15.2 126 25.1 23.8 105 ST. LAWRENCE ALT 8620 3.6 4.4 82 12.9 13.1 98 TOGWOTEE PASS 9580 18.6 27.5 68 20.6 30.2 68 TOWNSEND CREEK 8700 8.0 6.7 119 18.3 16.6 110 ----- ----- Basin wide percent of average 103 91 BIGHORN BASIN BALD MTN. 9380 19.9 23.2 86 21.0 22.6 93 BEAR TRAP MEADOW 8200 .3 1.2 25 11.3 12.0 94 BLACKWATER 9780 17.8 28.8 62 18.0 26.1 69 BONE SPRINGS DIV 9350 18.3 16.8 109 21.6 19.6 110 EVENING STAR 9200 17.8 32.7 54 24.0 31.4 76 GRAVE SPRINGS 8550 4.9 8.8 56 11.7 14.1 83 KIRWIN 9550 10.4 11.6 90 13.2 15.3 86 MARQUETTE 8760 7.2 9.6 75 12.8 15.1 85 MIDDLE POWDER 7760 7.6 12.0 63 10.5 16.9 62 OWL CREEK 8975 -M 2.8 * 10.1 9.1 111 POWDER RIVER PASS 9480 8.1 8.8 92 17.1 17.0 101 SHELL CREEK 9580 19.2 16.4 117 19.1 18.0 106 SYLVAN LAKE 8420 9.2 21.3 43 20.2 26.1 77 SYLVAN ROAD 7120 .2 4.2 5 12.9 21.4 60 TIMBER CREEK 7950 1.6 2.9 55 9.9 11.8 84 YOUNTS PEAK 8350 10.2 16.2 63 14.4 19.9 72 ----- ----- Basin wide percent of average 71 84 SHOSHONE RIVER BLACKWATER 9780 17.8 28.8 62 18.0 26.1 69 EVENING STAR 9200 17.8 32.7 54 24.0 31.4 76 KIRWIN 9550 10.4 11.6 90 13.2 15.3 86 MARQUETTE 8760 7.2 9.6 75 12.8 15.1 85 SYLVAN LAKE 8420 9.2 21.3 43 20.2 26.1 77 SYLVAN ROAD 7120 .2 4.2 5 12.9 21.4 60 YOUNTS PEAK 8350 10.2 16.2 63 14.4 19.9 72 ----- ----- Basin wide percent of average 59 74 POWDER-TONGUE BEAR TRAP MEADOW 8200 .3 1.2 25 11.3 12.0 94 BIG GOOSE 7990 10.3 9.8 105 17.3 14.0 124 BONE SPRINGS DIV 9350 18.3 16.8 109 21.6 19.6 110 BURGESS JUNCTION 7880 11.1 11.1 100 16.7 16.4 102 CLOUD PEAK RESERVOIR 9860 19.1 15.2 126 20.5 18.6 110 DOME LAKE 8880 11.2 11.3 99 19.6 18.0 109 GRAVE SPRINGS 8550 4.9 8.8 56 11.7 14.1 83 HANSEN SAWMILL 8360 1.4 3.0 47 14.2 12.0 118 MIDDLE POWDER 7760 7.6 12.0 63 10.5 16.9 62 POWDER RIVER PASS 9480 8.1 8.8 92 17.1 17.0 101 SUCKER CREEK 8880 14.2 11.0 129 21.3 18.7 114 TIE CREEK 6870 .2 2.0 10 16.7 14.7 114 ----- ----- Basin wide percent of average 96 103 BELLE FOURCHE BLIND PARK 6890 .0 1.2 0 12.1 15.4 79 COLE CANYON 5910 .0 3.7 0 10.6 -M * NORTH RAPID CREEK 6130 .0 1.5 0 10.2 12.2 84 ----- ----- Basin wide percent of average 0 81 UPPER N. PLATTE RIVER COLUMBINE 9160 8.8 15.3 58 -M 30.2 * DIVIDE PEAK 8860 16.4 14.7 112 28.0 25.3 111 ELK RIVER 8700 11.2 9.7 115 25.4 24.0 106 JOE WRIGHT 10120 22.9 24.2 95 26.7 31.6 84 NORTH FRENCH CREEK 10130 29.6 33.6 88 30.5 31.2 98 OLD BATTLE 9920 40.8 35.9 114 -M 41.3 * SAGE CREEK BASIN 7850 .1 8.5 1 18.7 14.7 127 SOUTH BRUSH CREEK 8440 4.7 7.8 60 18.0 21.2 85 TOWER 10500 43.4 51.7 84 46.1 46.7 99 WEBBER SPRINGS 9250 20.0 20.1 100 31.9 32.3 99 WILLOW CREEK PASS 9540 16.1 12.1 133 16.1 16.7 96 ----- ----- Basin wide percent of average 92 99 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 18.5 24.6 75 22.3 28.3 79 CASPER MTN. 7850 5.5 13.2 42 15.8 21.0 75 DEADMAN HILL 10220 17.5 18.5 95 18.4 22.2 83 DEER PARK 9700 26.4 17.6 150 30.6 28.3 108 LAPRELE CREEK 8375 .0 4.6 0 13.3 17.7 75 RENO HILL 8500 7.0 11.1 63 15.7 21.7 72 ROACH 9700 14.7 14.9 99 21.9 23.7 92 SAND LAKE 10050 27.1 35.9 75 28.1 30.9 91 SOUTH PASS 9040 19.1 15.2 126 25.1 23.8 105 WINDY PEAK 7900 .8 2.6 31 11.1 14.7 76 ----- ----- Basin wide percent of average 86 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 1.7 0 19.0 19.3 98 DIVIDE PEAK 8860 16.4 14.7 112 28.0 25.3 111 OLD BATTLE 9920 40.8 35.9 114 -M 41.3 * SANDSTONE RS 8150 3.0 5.4 56 23.1 22.8 101 WHISKEY PARK 8950 26.1 27.6 95 30.8 35.1 88 ----- ----- Basin wide percent of average 101 98 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.2 10.3 138 18.5 16.8 110 BLIND BULL SUM 8900 19.4 25.8 75 19.7 26.1 75 EAST RIM DIVIDE 7930 .3 10.3 3 12.8 14.6 88 ELKHART PARK G.S. 9400 12.9 10.4 124 18.3 17.0 108 GROS VENTRE SUMMIT 8750 9.7 10.9 89 13.8 16.1 86 KENDALL R.S. 7740 .2 5.5 4 15.2 17.2 88 LOOMIS PARK 8240 6.3 11.0 57 19.1 20.7 92 NEW FORK LAKE 8340 5.7 5.1 112 13.9 14.2 98 SNIDER BASIN 8060 7.8 9.1 86 16.4 19.1 86 SPRING CREEK DIVIDE 9000 25.4 25.8 98 26.9 31.1 86 TRIPLE PEAK 8500 11.3 19.0 59 24.3 29.7 82 ----- ----- Basin wide percent of average 79 89 LOWER GREEN RIVER HAMS FORK 7840 1.3 2.5 52 17.9 15.4 116 HEWINTA 9500 2.6 5.9 44 15.6 18.6 84 HICKERSON PARK 9100 .0 3.1 0 13.2 11.0 120 HOLE-IN-ROCK 9150 .1 2.6 4 12.9 10.5 123 INDIAN CREEK 9425 32.5 25.0 130 30.1 30.5 99 KELLEY R.S. 8180 13.0 10.5 124 24.1 24.4 99 STEEL CREEK PARK 10100 19.9 18.2 109 20.3 21.2 96 ----- ----- Basin wide percent of average 102 102 UPPER BEAR RIVER BUG LAKE 7950 18.4 12.9 143 28.2 23.3 121 HAYDEN FORK 9100 8.9 8.9 100 29.8 26.2 114 KELLEY R.S. 8180 13.0 10.5 124 24.1 24.4 99 LILY LAKE 9050 9.5 7.7 123 -M 22.1 * MONTE CRISTO 8960 31.2 24.3 128 36.3 31.5 115 SALT RIVER SUMMIT 7600 6.9 6.5 106 20.7 22.4 92 TRIAL LAKE 9960 34.4 24.1 143 36.3 30.7 118 ----- ----- Basin wide percent of average 129 111 ----------------------------------------------------------------------------- -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.