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 FRIDAY: MAY 20 , 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 4.6 2 19.0 26.1 73 COTTONWOOD CREEK 7600 7.5 11.3 66 29.7 34.3 87 GRANITE CREEK 6770 .1 5.7 2 20.3 23.9 85 GRASSY LAKE 7265 8.5 22.8 37 30.9 43.5 71 GROS VENTRE SUMMIT 8750 5.8 8.1 72 14.7 16.8 87 LEWIS LAKE DIVIDE 7850 9.1 25.7 35 28.4 43.9 65 PHILLIPS BENCH 8200 19.3 21.1 91 30.2 35.2 86 SALT RIVER SUMMIT 7600 .6 3.5 17 21.7 23.1 94 SNAKE RIVER STATION 6920 .3 4.0 8 17.4 27.3 64 SPRING CREEK DIVIDE 9000 22.7 21.8 104 27.9 32.0 87 THUMB DIVIDE 7980 .2 7.4 3 16.9 23.7 71 TOGWOTEE PASS 9580 18.8 25.8 73 23.2 31.3 74 TWO OCEAN PLATEAU 9240 24.5 29.1 84 23.8 34.7 69 WILLOW CREEK 8450 18.1 22.1 82 39.7 40.7 98 ----- ----- Basin wide percent of average 64 79 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.4 23.9 73 18.9 25.6 74 BLACK BEAR 8170 28.7 33.4 86 38.7 48.6 80 CANYON 8090 .1 5.4 2 13.7 19.4 71 FISHER CREEK 9100 25.6 34.7 74 31.8 44.8 71 MADISON PLATEAU 7750 12.9 16.4 79 26.4 32.8 80 NORTHEAST ENTRANCE 7350 .2 2.4 8 11.2 16.5 68 PARKER PEAK 9400 16.9 22.4 75 18.3 21.8 84 SYLVAN LAKE 8420 7.7 17.7 44 22.4 27.3 82 THUMB DIVIDE 7980 .2 7.4 3 16.9 23.7 71 TWO OCEAN PLATEAU 9240 24.5 29.1 84 23.8 34.7 69 WHISKEY CREEK 6800 2.7 7.3 37 20.7 26.1 79 WHITE MILL 8700 16.8 22.7 74 21.3 33.7 63 WOLVERINE 7650 .2 2.3 9 11.1 17.1 65 ----- ----- Basin wide percent of average 68 74 WIND RIVER BURROUGHS CREEK 8750 9.4 8.3 113 15.9 21.3 75 COLD SPRINGS 9630 1.2 2.7 44 14.8 15.9 93 DEER PARK 9700 24.6 14.5 170 32.1 29.4 109 HOBBS PARK 10100 17.7 14.8 120 21.1 19.4 109 LITTLE WARM 9370 6.4 6.1 105 16.0 18.8 85 SOUTH PASS 9040 15.8 11.8 134 27.0 24.7 109 ST. LAWRENCE ALT 8620 -M 2.8 * 14.7 14.0 105 TOGWOTEE PASS 9580 18.8 25.8 73 23.2 31.3 74 TOWNSEND CREEK 8700 3.0 4.5 67 19.6 17.5 112 ----- ----- Basin wide percent of average 109 96 BIGHORN BASIN BALD MTN. 9380 20.1 21.1 95 23.3 23.8 98 BEAR TRAP MEADOW 8200 .1 .5 20* 13.3 12.9 103 BLACKWATER 9780 17.9 27.6 65 21.0 27.3 77 BONE SPRINGS DIV 9350 17.0 13.8 123 23.3 20.8 112 EVENING STAR 9200 17.3 30.8 56 27.6 32.7 84 GRAVE SPRINGS 8550 2.3 6.1 38 13.3 14.9 89 KIRWIN 9550 10.0 9.4 106 16.1 16.2 99 MARQUETTE 8760 6.4 7.5 85 15.6 16.3 96 MIDDLE POWDER 7760 4.8 8.6 56 11.9 17.8 67 OWL CREEK 8975 1.3 1.8 72 12.7 10.0 127 POWDER RIVER PASS 9480 5.7 6.4 89 18.3 18.1 101 SHELL CREEK 9580 18.1 14.6 124 20.6 19.1 108 SYLVAN LAKE 8420 7.7 17.7 44 22.4 27.3 82 SYLVAN ROAD 7120 .2 1.9 11 14.1 22.2 64 TIMBER CREEK 7950 .8 1.7 47 12.4 12.9 96 YOUNTS PEAK 8350 9.2 12.9 71 16.5 20.8 79 ----- ----- Basin wide percent of average 76 90 SHOSHONE RIVER BLACKWATER 9780 17.9 27.6 65 21.0 27.3 77 EVENING STAR 9200 17.3 30.8 56 27.6 32.7 84 KIRWIN 9550 10.0 9.4 106 16.1 16.2 99 MARQUETTE 8760 6.4 7.5 85 15.6 16.3 96 SYLVAN LAKE 8420 7.7 17.7 44 22.4 27.3 82 SYLVAN ROAD 7120 .2 1.9 11 14.1 22.2 64 YOUNTS PEAK 8350 9.2 12.9 71 16.5 20.8 79 ----- ----- Basin wide percent of average 64 82 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .5 20* 13.3 12.9 103 BIG GOOSE 7990 6.7 7.2 93 18.9 15.0 126 BONE SPRINGS DIV 9350 17.0 13.8 123 23.3 20.8 112 BURGESS JUNCTION 7880 7.4 8.0 92 18.0 17.3 104 CLOUD PEAK RESERVOIR 9860 18.3 12.7 144 22.4 19.9 113 DOME LAKE 8880 7.9 8.3 95 21.1 19.1 110 GRAVE SPRINGS 8550 2.3 6.1 38 13.3 14.9 89 HANSEN SAWMILL 8360 .1 1.6 6 15.5 12.9 120 MIDDLE POWDER 7760 4.8 8.6 56 11.9 17.8 67 POWDER RIVER PASS 9480 5.7 6.4 89 18.3 18.1 101 SUCKER CREEK 8880 12.6 8.3 152 23.3 19.9 117 TIE CREEK 6870 .2 .9 22 19.2 15.8 122 ----- ----- Basin wide percent of average 101 107 BELLE FOURCHE BLIND PARK 6890 .1 .1 100* 14.2 16.5 86 COLE CANYON 5910 .0 2.3 0 13.7 -M * NORTH RAPID CREEK 6130 .0 .4 0* 11.5 13.0 88 ----- ----- Basin wide percent of average 4* 87 UPPER N. PLATTE RIVER COLUMBINE 9160 1.1 9.8 11 -M 31.0 * DIVIDE PEAK 8860 10.6 10.1 105 28.9 26.3 110 ELK RIVER 8700 2.8 5.7 49 26.2 24.8 106 JOE WRIGHT 10120 21.5 21.8 99 27.6 33.0 84 NORTH FRENCH CREEK 10130 29.0 30.5 95 32.3 32.5 99 OLD BATTLE 9920 39.7 32.6 122 37.0 42.5 87 SAGE CREEK BASIN 7850 .1 5.8 2 19.4 15.2 128 SOUTH BRUSH CREEK 8440 .1 5.1 2 19.6 22.2 88 TOWER 10500 40.0 48.9 82 47.1 48.1 98 WEBBER SPRINGS 9250 15.3 14.7 104 33.0 33.3 99 WILLOW CREEK PASS 9540 13.5 8.8 153 16.5 17.6 94 ----- ----- Basin wide percent of average 90 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 16.7 19.7 85 24.7 29.5 84 CASPER MTN. 7850 .4 9.5 4 17.2 22.3 77 DEADMAN HILL 10220 16.1 16.0 101 19.4 23.3 83 DEER PARK 9700 24.6 14.5 170 32.1 29.4 109 LAPRELE CREEK 8375 .0 2.8 0 14.9 18.7 80 RENO HILL 8500 2.0 7.8 26 17.3 23.0 75 ROACH 9700 11.5 11.2 103 23.0 24.9 92 SAND LAKE 10050 25.1 32.6 77 29.9 32.4 92 SOUTH PASS 9040 15.8 11.8 134 27.0 24.7 109 WINDY PEAK 7900 .7 1.2 58 12.1 15.7 77 ----- ----- Basin wide percent of average 89 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .4 0* 20.1 20.0 101 DIVIDE PEAK 8860 10.6 10.1 105 28.9 26.3 110 OLD BATTLE 9920 39.7 32.6 122 37.0 42.5 87 SANDSTONE RS 8150 .2 2.7 7 24.6 23.7 104 WHISKEY PARK 8950 22.4 22.7 99 31.8 36.3 88 ----- ----- Basin wide percent of average 106 96 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.1 6.8 163 19.8 17.6 112 BLIND BULL SUM 8900 17.5 22.8 77 21.0 27.0 78 EAST RIM DIVIDE 7930 .1 6.9 1 14.1 15.2 93 ELKHART PARK G.S. 9400 11.4 7.6 150 20.0 17.8 112 GROS VENTRE SUMMIT 8750 5.8 8.1 72 14.7 16.8 87 KENDALL R.S. 7740 .1 2.6 4 16.3 17.8 92 LOOMIS PARK 8240 4.5 7.5 60 20.6 21.5 96 NEW FORK LAKE 8340 2.5 2.7 93 15.8 14.9 106 SNIDER BASIN 8060 1.2 5.4 22 17.0 19.7 86 SPRING CREEK DIVIDE 9000 22.7 21.8 104 27.9 32.0 87 TRIPLE PEAK 8500 8.3 13.5 61 26.2 30.6 86 ----- ----- Basin wide percent of average 81 92 LOWER GREEN RIVER HAMS FORK 7840 .2 .8 25* 18.5 16.1 115 HEWINTA 9500 .0 3.4 0 16.5 19.3 85 HICKERSON PARK 9100 .0 1.5 0 14.2 11.7 121 HOLE-IN-ROCK 9150 .0 1.2 0 13.6 11.2 121 INDIAN CREEK 9425 30.1 21.1 143 31.2 31.3 100 KELLEY R.S. 8180 9.2 6.8 135 24.9 25.2 99 STEEL CREEK PARK 10100 18.2 16.2 112 20.9 22.0 95 ----- ----- Basin wide percent of average 113 102 UPPER BEAR RIVER BUG LAKE 7950 12.9 8.5 152 29.0 24.1 120 HAYDEN FORK 9100 2.4 5.6 43 30.7 27.2 113 KELLEY R.S. 8180 9.2 6.8 135 24.9 25.2 99 LILY LAKE 9050 2.4 4.9 49 23.0 22.9 100 MONTE CRISTO 8960 27.4 19.7 139 38.0 32.6 117 SALT RIVER SUMMIT 7600 .6 3.5 17 21.7 23.1 94 TRIAL LAKE 9960 31.8 20.6 154 37.7 31.8 119 ----- ----- Basin wide percent of average 125 110 ----------------------------------------------------------------------------- -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.