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 THURSDAY: MAY 12 , 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 7.7 1 17.6 25.4 69 COTTONWOOD CREEK 7600 10.6 15.2 70 28.1 33.3 84 GRANITE CREEK 6770 1.5 8.9 17 19.0 23.3 82 GRASSY LAKE 7265 13.3 28.0 48 29.2 42.4 69 GROS VENTRE SUMMIT 8750 9.9 10.6 93 14.0 16.2 86 LEWIS LAKE DIVIDE 7850 14.5 30.2 48 25.7 42.9 60 PHILLIPS BENCH 8200 21.0 25.2 83 27.9 34.3 81 SALT RIVER SUMMIT 7600 6.9 6.1 113 20.9 22.5 93 SNAKE RIVER STATION 6920 .2 7.1 3 16.2 26.5 61 SPRING CREEK DIVIDE 9000 25.4 25.5 100 26.9 31.2 86 THUMB DIVIDE 7980 4.4 10.8 41 15.6 23.0 68 TOGWOTEE PASS 9580 19.5 27.5 71 21.3 30.3 70 TWO OCEAN PLATEAU 9240 26.5 30.9 86 22.5 33.6 67 WILLOW CREEK 8450 19.4 26.4 73 37.1 39.4 94 ----- ----- Basin wide percent of average 67 76 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.4 25.6 72 17.5 24.7 71 BLACK BEAR 8170 33.3 37.2 90 35.9 47.4 76 CANYON 8090 3.5 8.0 44 12.6 18.7 67 FISHER CREEK 9100 25.1 36.9 68 28.9 43.6 66 MADISON PLATEAU 7750 16.5 20.5 80 24.6 31.8 77 NORTHEAST ENTRANCE 7350 .0 4.1 0 9.7 15.8 61 PARKER PEAK 9400 18.2 24.1 76 16.7 20.8 80 SYLVAN LAKE 8420 9.3 21.1 44 20.3 26.2 77 THUMB DIVIDE 7980 4.4 10.8 41 15.6 23.0 68 TWO OCEAN PLATEAU 9240 26.5 30.9 86 22.5 33.6 67 WHISKEY CREEK 6800 8.2 11.0 75 19.2 25.3 76 WHITE MILL 8700 18.3 25.1 73 18.8 32.6 58 WOLVERINE 7650 .2 4.1 5 10.3 16.3 63 ----- ----- Basin wide percent of average 70 70 WIND RIVER BURROUGHS CREEK 8750 11.7 11.1 105 14.8 20.5 72 COLD SPRINGS 9630 4.9 3.6 136 14.5 15.0 97 DEER PARK 9700 27.3 17.5 156 31.5 28.4 111 HOBBS PARK 10100 20.6 17.0 121 20.7 18.4 112 LITTLE WARM 9370 8.7 8.5 102 15.0 17.9 84 SOUTH PASS 9040 19.9 14.9 134 26.2 23.9 110 ST. LAWRENCE ALT 8620 5.4 4.2 129 14.9 13.2 113 TOGWOTEE PASS 9580 19.5 27.5 71 21.3 30.3 70 TOWNSEND CREEK 8700 9.0 6.4 141 19.5 16.7 117 ----- ----- Basin wide percent of average 115 97 BIGHORN BASIN BALD MTN. 9380 20.5 23.1 89 21.6 22.7 95 BEAR TRAP MEADOW 8200 1.6 1.1 145 12.8 12.1 106 BLACKWATER 9780 18.5 28.8 64 19.0 26.2 73 BONE SPRINGS DIV 9350 18.7 16.6 113 21.9 19.7 111 EVENING STAR 9200 18.8 32.7 57 25.0 31.5 79 GRAVE SPRINGS 8550 6.2 8.6 72 12.9 14.2 91 KIRWIN 9550 11.2 11.4 98 14.3 15.4 93 MARQUETTE 8760 9.3 9.4 99 14.7 15.2 97 MIDDLE POWDER 7760 7.9 11.8 67 10.9 17.0 64 OWL CREEK 8975 4.3 2.7 159 11.7 9.2 127 POWDER RIVER PASS 9480 8.6 8.7 99 17.5 17.1 102 SHELL CREEK 9580 19.7 16.4 120 19.6 18.1 108 SYLVAN LAKE 8420 9.3 21.1 44 20.3 26.2 77 SYLVAN ROAD 7120 .0 3.9 0 13.0 21.5 60 TIMBER CREEK 7950 3.6 2.8 129 12.0 11.9 101 YOUNTS PEAK 8350 10.2 16.0 64 14.6 20.0 73 ----- ----- Basin wide percent of average 78 88 SHOSHONE RIVER BLACKWATER 9780 18.5 28.8 64 19.0 26.2 73 EVENING STAR 9200 18.8 32.7 57 25.0 31.5 79 KIRWIN 9550 11.2 11.4 98 14.3 15.4 93 MARQUETTE 8760 9.3 9.4 99 14.7 15.2 97 SYLVAN LAKE 8420 9.3 21.1 44 20.3 26.2 77 SYLVAN ROAD 7120 .0 3.9 0 13.0 21.5 60 YOUNTS PEAK 8350 10.2 16.0 64 14.6 20.0 73 ----- ----- Basin wide percent of average 63 77 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.6 1.1 145 12.8 12.1 106 BIG GOOSE 7990 11.0 9.6 115 18.1 14.1 128 BONE SPRINGS DIV 9350 18.7 16.6 113 21.9 19.7 111 BURGESS JUNCTION 7880 11.3 10.9 104 17.1 16.5 104 CLOUD PEAK RESERVOIR 9860 20.2 15.1 134 21.5 18.7 115 DOME LAKE 8880 12.0 11.1 108 20.6 18.1 114 GRAVE SPRINGS 8550 6.2 8.6 72 12.9 14.2 91 HANSEN SAWMILL 8360 2.7 2.8 96 15.3 12.1 126 MIDDLE POWDER 7760 7.9 11.8 67 10.9 17.0 64 POWDER RIVER PASS 9480 8.6 8.7 99 17.5 17.1 102 SUCKER CREEK 8880 15.0 10.8 139 21.8 18.9 115 TIE CREEK 6870 1.8 1.9 95 18.7 14.8 126 ----- ----- Basin wide percent of average 107 108 BELLE FOURCHE BLIND PARK 6890 .2 .9 22 12.8 15.5 83 COLE CANYON 5910 .4 3.5 11 11.5 -M * NORTH RAPID CREEK 6130 .7 1.3 54 10.9 12.3 89 ----- ----- Basin wide percent of average 23 85 UPPER N. PLATTE RIVER COLUMBINE 9160 8.6 14.8 58 -M 30.3 * DIVIDE PEAK 8860 16.7 14.2 118 28.4 25.4 112 ELK RIVER 8700 11.0 9.2 120 25.5 24.1 106 JOE WRIGHT 10120 23.7 24.1 98 27.3 31.8 86 NORTH FRENCH CREEK 10130 31.1 33.5 93 31.9 31.3 102 OLD BATTLE 9920 41.4 35.8 116 33.9 41.4 82 SAGE CREEK BASIN 7850 .2 8.2 2 18.9 14.7 129 SOUTH BRUSH CREEK 8440 5.6 7.5 75 19.4 21.3 91 TOWER 10500 43.3 51.6 84 46.2 46.8 99 WEBBER SPRINGS 9250 19.7 19.6 101 32.0 32.4 99 WILLOW CREEK PASS 9540 16.3 11.8 138 16.2 16.8 96 ----- ----- Basin wide percent of average 94 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 -M 24.2 * 23.5 28.5 82 CASPER MTN. 7850 5.8 12.9 45 16.6 21.1 79 DEADMAN HILL 10220 18.2 18.4 99 19.4 22.3 87 DEER PARK 9700 27.3 17.5 156 31.5 28.4 111 LAPRELE CREEK 8375 .6 4.3 14 13.9 17.8 78 RENO HILL 8500 7.9 10.8 73 16.7 21.8 77 ROACH 9700 15.4 14.5 106 22.7 23.8 95 SAND LAKE 10050 -M 35.8 * 29.5 31.1 95 SOUTH PASS 9040 19.9 14.9 134 26.2 23.9 110 WINDY PEAK 7900 1.1 2.4 46 11.8 14.8 80 ----- ----- Basin wide percent of average 101 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 1.5 0 19.1 19.4 98 DIVIDE PEAK 8860 16.7 14.2 118 28.4 25.4 112 OLD BATTLE 9920 41.4 35.8 116 33.9 41.4 82 SANDSTONE RS 8150 3.3 5.0 66 23.7 22.9 103 WHISKEY PARK 8950 26.1 27.4 95 31.2 35.2 89 ----- ----- Basin wide percent of average 104 94 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.3 10.0 143 18.7 16.9 111 BLIND BULL SUM 8900 19.8 25.5 78 20.3 26.2 77 EAST RIM DIVIDE 7930 .8 10.0 8 13.5 14.7 92 ELKHART PARK G.S. 9400 13.4 10.1 133 19.0 17.1 111 GROS VENTRE SUMMIT 8750 9.9 10.6 93 14.0 16.2 86 KENDALL R.S. 7740 .2 5.0 4 15.6 17.3 90 LOOMIS PARK 8240 7.0 10.7 65 19.8 20.8 95 NEW FORK LAKE 8340 6.2 4.8 129 14.6 14.3 102 SNIDER BASIN 8060 7.6 8.8 86 16.5 19.2 86 SPRING CREEK DIVIDE 9000 25.4 25.5 100 26.9 31.2 86 TRIPLE PEAK 8500 11.9 18.5 64 24.9 29.8 84 ----- ----- Basin wide percent of average 84 91 LOWER GREEN RIVER HAMS FORK 7840 1.4 2.1 67 18.2 15.5 117 HEWINTA 9500 2.9 5.5 53 15.9 18.7 85 HICKERSON PARK 9100 .0 2.9 0 13.4 11.1 121 HOLE-IN-ROCK 9150 .1 2.3 4 13.2 10.6 125 INDIAN CREEK 9425 33.0 24.7 134 30.6 30.6 100 KELLEY R.S. 8180 13.1 10.2 128 24.3 24.5 99 STEEL CREEK PARK 10100 20.1 18.2 110 20.5 21.3 96 ----- ----- Basin wide percent of average 107 103 UPPER BEAR RIVER BUG LAKE 7950 18.7 12.4 151 28.4 23.4 121 HAYDEN FORK 9100 8.9 8.5 105 30.1 26.3 114 KELLEY R.S. 8180 13.1 10.2 128 24.3 24.5 99 LILY LAKE 9050 9.6 7.3 132 -M 22.2 * MONTE CRISTO 8960 31.5 23.9 132 36.8 31.6 116 SALT RIVER SUMMIT 7600 6.9 6.1 113 20.9 22.5 93 TRIAL LAKE 9960 34.9 23.9 146 36.9 30.8 120 ----- ----- Basin wide percent of average 134 112 ----------------------------------------------------------------------------- -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.