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 MONDAY: MAY 16 , 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 6.1 2 17.8 25.7 69 COTTONWOOD CREEK 7600 8.6 13.4 64 28.7 33.8 85 GRANITE CREEK 6770 .2 7.4 3 19.2 23.6 81 GRASSY LAKE 7265 11.3 25.8 44 29.8 42.9 69 GROS VENTRE SUMMIT 8750 7.8 9.5 82 14.0 16.5 85 LEWIS LAKE DIVIDE 7850 12.5 28.3 44 26.4 43.4 61 PHILLIPS BENCH 8200 20.0 23.5 85 28.3 34.8 81 SALT RIVER SUMMIT 7600 4.1 4.6 89 21.2 22.8 93 SNAKE RIVER STATION 6920 .3 5.4 6 16.5 26.9 61 SPRING CREEK DIVIDE 9000 24.6 24.1 102 27.4 31.6 87 THUMB DIVIDE 7980 2.1 9.2 23 15.9 23.4 68 TOGWOTEE PASS 9580 19.0 27.1 70 21.8 30.8 71 TWO OCEAN PLATEAU 9240 26.1 30.4 86 22.9 34.1 67 WILLOW CREEK 8450 19.0 24.7 77 38.4 40.1 96 ----- ----- Basin wide percent of average 65 76 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.9 25.2 71 18.0 25.2 71 BLACK BEAR 8170 30.8 35.9 86 36.6 48.0 76 CANYON 8090 1.7 6.8 25 13.0 19.1 68 FISHER CREEK 9100 24.5 36.2 68 29.5 44.2 67 MADISON PLATEAU 7750 15.5 18.9 82 25.1 32.3 78 NORTHEAST ENTRANCE 7350 .2 3.1 6 10.2 16.2 63 PARKER PEAK 9400 17.6 23.7 74 17.1 21.3 80 SYLVAN LAKE 8420 8.5 19.8 43 21.0 26.8 78 THUMB DIVIDE 7980 2.1 9.2 23 15.9 23.4 68 TWO OCEAN PLATEAU 9240 26.1 30.4 86 22.9 34.1 67 WHISKEY CREEK 6800 6.4 9.3 69 19.5 25.7 76 WHITE MILL 8700 17.8 24.3 73 19.6 33.1 59 WOLVERINE 7650 .2 3.0 7 11.0 16.7 66 ----- ----- Basin wide percent of average 69 71 WIND RIVER BURROUGHS CREEK 8750 10.8 10.0 108 15.1 20.9 72 COLD SPRINGS 9630 3.8 3.2 119 14.6 15.4 95 DEER PARK 9700 26.9 16.7 161 31.5 28.9 109 HOBBS PARK 10100 19.9 16.3 122 20.9 18.9 111 LITTLE WARM 9370 8.0 7.5 107 15.2 18.3 83 SOUTH PASS 9040 18.3 13.6 135 26.5 24.3 109 ST. LAWRENCE ALT 8620 4.2 3.5 120 14.9 13.6 110 TOGWOTEE PASS 9580 19.0 27.1 70 21.8 30.8 71 TOWNSEND CREEK 8700 7.1 5.5 129 19.6 17.1 115 ----- ----- Basin wide percent of average 114 96 BIGHORN BASIN BALD MTN. 9380 20.4 22.6 90 22.2 23.2 96 BEAR TRAP MEADOW 8200 .2 .7 29 12.9 12.5 103 BLACKWATER 9780 18.8 28.6 66 19.5 26.7 73 BONE SPRINGS DIV 9350 18.0 15.7 115 22.3 20.2 110 EVENING STAR 9200 18.4 32.2 57 25.4 32.1 79 GRAVE SPRINGS 8550 5.5 7.5 73 12.8 14.6 88 KIRWIN 9550 10.6 10.7 99 14.5 15.8 92 MARQUETTE 8760 8.8 8.6 102 14.8 15.8 94 MIDDLE POWDER 7760 6.7 10.6 63 11.0 17.4 63 OWL CREEK 8975 3.3 2.2 150 12.0 9.6 125 POWDER RIVER PASS 9480 7.9 7.8 101 17.8 17.6 101 SHELL CREEK 9580 19.2 16.0 120 19.9 18.6 107 SYLVAN LAKE 8420 8.5 19.8 43 21.0 26.8 78 SYLVAN ROAD 7120 .1 2.5 4 13.2 21.9 60 TIMBER CREEK 7950 2.9 2.1 138 12.0 12.4 97 YOUNTS PEAK 8350 9.2 14.9 62 14.9 20.4 73 ----- ----- Basin wide percent of average 78 87 SHOSHONE RIVER BLACKWATER 9780 18.8 28.6 66 19.5 26.7 73 EVENING STAR 9200 18.4 32.2 57 25.4 32.1 79 KIRWIN 9550 10.6 10.7 99 14.5 15.8 92 MARQUETTE 8760 8.8 8.6 102 14.8 15.8 94 SYLVAN LAKE 8420 8.5 19.8 43 21.0 26.8 78 SYLVAN ROAD 7120 .1 2.5 4 13.2 21.9 60 YOUNTS PEAK 8350 9.2 14.9 62 14.9 20.4 73 ----- ----- Basin wide percent of average 63 77 POWDER-TONGUE BEAR TRAP MEADOW 8200 .2 .7 29 12.9 12.5 103 BIG GOOSE 7990 9.8 8.7 113 18.5 14.6 127 BONE SPRINGS DIV 9350 18.0 15.7 115 22.3 20.2 110 BURGESS JUNCTION 7880 10.4 9.8 106 17.6 16.9 104 CLOUD PEAK RESERVOIR 9860 19.9 14.4 138 21.8 19.3 113 DOME LAKE 8880 10.9 10.0 109 20.7 18.6 111 GRAVE SPRINGS 8550 5.5 7.5 73 12.8 14.6 88 HANSEN SAWMILL 8360 1.0 2.1 48 15.5 12.5 124 MIDDLE POWDER 7760 6.7 10.6 63 11.0 17.4 63 POWDER RIVER PASS 9480 7.9 7.8 101 17.8 17.6 101 SUCKER CREEK 8880 14.4 9.8 147 22.1 19.4 114 TIE CREEK 6870 .3 1.2 25 18.9 15.3 124 ----- ----- Basin wide percent of average 107 107 BELLE FOURCHE BLIND PARK 6890 .0 .1 0* 12.9 16.0 81 COLE CANYON 5910 .0 2.9 0 12.6 -M * NORTH RAPID CREEK 6130 .0 .6 0* 11.2 12.7 88 ----- ----- Basin wide percent of average 0* 84 UPPER N. PLATTE RIVER COLUMBINE 9160 5.9 12.4 48 -M 30.7 * DIVIDE PEAK 8860 15.0 12.3 122 28.7 25.8 111 ELK RIVER 8700 9.5 7.2 132 26.2 24.5 107 JOE WRIGHT 10120 23.6 23.4 101 27.8 32.4 86 NORTH FRENCH CREEK 10130 30.8 32.7 94 32.4 31.9 102 OLD BATTLE 9920 41.3 34.9 118 33.7 42.0 80 SAGE CREEK BASIN 7850 .2 7.1 3 19.3 15.0 129 SOUTH BRUSH CREEK 8440 4.4 6.2 71 19.6 21.8 90 TOWER 10500 41.7 51.0 82 46.9 47.5 99 WEBBER SPRINGS 9250 18.8 17.4 108 32.8 32.8 100 WILLOW CREEK PASS 9540 15.8 10.7 148 16.5 17.2 96 ----- ----- Basin wide percent of average 96 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 19.3 22.4 86 24.3 29.0 84 CASPER MTN. 7850 4.3 11.3 38 17.2 21.7 79 DEADMAN HILL 10220 18.0 17.6 102 19.5 22.8 86 DEER PARK 9700 26.9 16.7 161 31.5 28.9 109 LAPRELE CREEK 8375 .0 3.4 0 14.7 18.2 81 RENO HILL 8500 6.8 9.3 73 17.3 22.4 77 ROACH 9700 14.4 13.0 111 23.0 24.3 95 SAND LAKE 10050 28.7 34.9 82 29.9 31.7 94 SOUTH PASS 9040 18.3 13.6 135 26.5 24.3 109 WINDY PEAK 7900 .7 1.6 44 12.4 15.2 82 ----- ----- Basin wide percent of average 96 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .6 33* 20.2 19.7 103 DIVIDE PEAK 8860 15.0 12.3 122 28.7 25.8 111 OLD BATTLE 9920 41.3 34.9 118 33.7 42.0 80 SANDSTONE RS 8150 .3 3.6 8 24.2 23.3 104 WHISKEY PARK 8950 25.3 25.7 98 31.8 35.7 89 ----- ----- Basin wide percent of average 106 95 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.5 8.6 145 19.0 17.2 110 BLIND BULL SUM 8900 18.6 24.5 76 20.5 26.6 77 EAST RIM DIVIDE 7930 .1 8.7 1 13.8 15.0 92 ELKHART PARK G.S. 9400 12.6 9.0 140 19.5 17.5 111 GROS VENTRE SUMMIT 8750 7.8 9.5 82 14.0 16.5 85 KENDALL R.S. 7740 .2 3.5 6 15.8 17.6 90 LOOMIS PARK 8240 5.9 9.3 63 20.3 21.2 96 NEW FORK LAKE 8340 4.4 3.6 122 15.4 14.6 105 SNIDER BASIN 8060 4.3 7.2 60 16.6 19.4 86 SPRING CREEK DIVIDE 9000 24.6 24.1 102 27.4 31.6 87 TRIPLE PEAK 8500 10.0 16.4 61 25.4 30.2 84 ----- ----- Basin wide percent of average 81 91 LOWER GREEN RIVER HAMS FORK 7840 .3 1.0 30* 18.3 15.8 116 HEWINTA 9500 .1 4.3 2 16.1 19.0 85 HICKERSON PARK 9100 .0 2.0 0 13.8 11.4 121 HOLE-IN-ROCK 9150 .1 1.6 6 13.0 10.9 119 INDIAN CREEK 9425 32.0 23.2 138 30.9 31.0 100 KELLEY R.S. 8180 10.9 8.6 127 24.4 24.9 98 STEEL CREEK PARK 10100 19.7 17.7 111 20.7 21.7 95 ----- ----- Basin wide percent of average 108 102 UPPER BEAR RIVER BUG LAKE 7950 16.6 10.4 160 28.7 23.7 121 HAYDEN FORK 9100 6.0 7.0 86 30.4 26.7 114 KELLEY R.S. 8180 10.9 8.6 127 24.4 24.9 98 LILY LAKE 9050 7.4 6.0 123 24.2 22.6 107 MONTE CRISTO 8960 29.9 22.1 135 37.2 32.1 116 SALT RIVER SUMMIT 7600 4.1 4.6 89 21.2 22.8 93 TRIAL LAKE 9960 33.9 22.7 149 37.2 31.3 119 ----- ----- Basin wide percent of average 134 110 ----------------------------------------------------------------------------- -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.