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 9 , 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 9.0 1 17.1 25.1 68 COTTONWOOD CREEK 7600 11.1 16.4 68 26.8 32.9 81 GRANITE CREEK 6770 2.5 9.9 25 17.7 23.0 77 GRASSY LAKE 7265 14.5 29.5 49 28.1 42.0 67 GROS VENTRE SUMMIT 8750 9.8 11.4 86 13.1 15.9 82 LEWIS LAKE DIVIDE 7850 15.6 31.4 50 25.0 42.6 59 PHILLIPS BENCH 8200 19.7 26.4 75 25.9 34.0 76 SALT RIVER SUMMIT 7600 7.8 7.3 107 20.2 22.2 91 SNAKE RIVER STATION 6920 .2 8.5 2 15.5 26.2 59 SPRING CREEK DIVIDE 9000 25.6 26.4 97 26.3 30.9 85 THUMB DIVIDE 7980 4.9 11.9 41 14.9 22.7 66 TOGWOTEE PASS 9580 18.2 27.6 66 20.0 30.0 67 TWO OCEAN PLATEAU 9240 26.1 31.2 84 21.8 33.2 66 WILLOW CREEK 8450 19.8 27.6 72 36.0 39.0 92 ----- ----- Basin wide percent of average 64 73 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.2 25.7 67 16.6 24.4 68 BLACK BEAR 8170 33.3 38.0 88 34.9 47.0 74 CANYON 8090 3.8 8.9 43 12.1 18.4 66 FISHER CREEK 9100 24.0 37.1 65 28.5 43.1 66 MADISON PLATEAU 7750 16.5 21.5 77 23.6 31.4 75 NORTHEAST ENTRANCE 7350 .1 4.9 2 9.2 15.5 59 PARKER PEAK 9400 16.2 24.2 67 15.6 20.5 76 SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76 THUMB DIVIDE 7980 4.9 11.9 41 14.9 22.7 66 TWO OCEAN PLATEAU 9240 26.1 31.2 84 21.8 33.2 66 WHISKEY CREEK 6800 9.0 12.1 74 18.4 25.0 74 WHITE MILL 8700 18.1 25.4 71 18.3 32.2 57 WOLVERINE 7650 .2 4.9 4 9.2 16.0 57 ----- ----- Basin wide percent of average 67 68 WIND RIVER BURROUGHS CREEK 8750 10.9 11.8 92 13.3 20.2 66 COLD SPRINGS 9630 1.8 3.9 46 10.7 14.7 73 DEER PARK 9700 25.9 17.8 146 29.6 28.0 106 HOBBS PARK 10100 18.2 17.3 105 18.3 18.0 102 LITTLE WARM 9370 5.9 9.2 64 11.9 17.6 68 SOUTH PASS 9040 19.5 15.8 123 24.5 23.6 104 ST. LAWRENCE ALT 8620 4.1 4.7 87 11.7 12.9 91 TOGWOTEE PASS 9580 18.2 27.6 66 20.0 30.0 67 TOWNSEND CREEK 8700 8.7 7.2 121 17.5 16.4 107 ----- ----- Basin wide percent of average 98 87 BIGHORN BASIN BALD MTN. 9380 18.7 23.3 80 19.8 22.3 89 BEAR TRAP MEADOW 8200 .9 1.5 60 10.6 11.8 90 BLACKWATER 9780 17.2 28.8 60 17.4 25.8 67 BONE SPRINGS DIV 9350 16.6 17.1 97 19.8 19.3 103 EVENING STAR 9200 17.1 32.8 52 22.9 31.1 74 GRAVE SPRINGS 8550 5.3 9.3 57 10.8 13.9 78 KIRWIN 9550 9.0 11.9 76 11.6 15.1 77 MARQUETTE 8760 5.9 9.9 60 10.9 14.8 74 MIDDLE POWDER 7760 8.6 12.5 69 10.1 16.7 60 OWL CREEK 8975 1.3 3.0 43 8.6 8.9 97 POWDER RIVER PASS 9480 7.9 9.2 86 16.5 16.8 98 SHELL CREEK 9580 -M 16.5 * 17.6 17.8 99 SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76 SYLVAN ROAD 7120 .1 5.0 2 12.4 21.2 58 TIMBER CREEK 7950 .6 3.3 18 7.4 11.5 64 YOUNTS PEAK 8350 10.0 16.6 60 13.4 19.7 68 ----- ----- Basin wide percent of average 62 78 SHOSHONE RIVER BLACKWATER 9780 17.2 28.8 60 17.4 25.8 67 EVENING STAR 9200 17.1 32.8 52 22.9 31.1 74 KIRWIN 9550 9.0 11.9 76 11.6 15.1 77 MARQUETTE 8760 5.9 9.9 60 10.9 14.8 74 SYLVAN LAKE 8420 9.4 21.8 43 19.6 25.8 76 SYLVAN ROAD 7120 .1 5.0 2 12.4 21.2 58 YOUNTS PEAK 8350 10.0 16.6 60 13.4 19.7 68 ----- ----- Basin wide percent of average 54 70 POWDER-TONGUE BEAR TRAP MEADOW 8200 .9 1.5 60 10.6 11.8 90 BIG GOOSE 7990 -M 10.2 * -M 13.8 * BONE SPRINGS DIV 9350 16.6 17.1 97 19.8 19.3 103 BURGESS JUNCTION 7880 10.9 11.5 95 15.5 16.2 96 CLOUD PEAK RESERVOIR 9860 17.8 15.4 116 19.1 18.3 104 DOME LAKE 8880 10.1 11.7 86 18.2 17.8 102 GRAVE SPRINGS 8550 5.3 9.3 57 10.8 13.9 78 HANSEN SAWMILL 8360 1.7 3.4 50 12.7 11.8 108 MIDDLE POWDER 7760 8.6 12.5 69 10.1 16.7 60 POWDER RIVER PASS 9480 7.9 9.2 86 16.5 16.8 98 SUCKER CREEK 8880 13.0 11.4 114 19.8 18.5 107 TIE CREEK 6870 .1 2.4 4 14.1 14.5 97 ----- ----- Basin wide percent of average 88 95 BELLE FOURCHE BLIND PARK 6890 .0 1.8 0 11.8 15.2 78 COLE CANYON 5910 .0 4.0 0 9.9 -M * NORTH RAPID CREEK 6130 .1 2.0 5 9.7 12.1 80 ----- ----- Basin wide percent of average 1 79 UPPER N. PLATTE RIVER COLUMBINE 9160 9.7 16.4 59 -M 30.0 * DIVIDE PEAK 8860 17.8 15.6 114 27.9 25.1 111 ELK RIVER 8700 12.3 10.8 114 25.2 23.8 106 JOE WRIGHT 10120 23.2 24.4 95 26.6 31.3 85 NORTH FRENCH CREEK 10130 29.7 33.8 88 30.3 30.9 98 OLD BATTLE 9920 40.9 36.1 113 -M 41.0 * SAGE CREEK BASIN 7850 .2 9.0 2 18.7 14.6 128 SOUTH BRUSH CREEK 8440 5.6 8.5 66 17.9 21.0 85 TOWER 10500 43.9 51.8 85 45.8 46.4 99 WEBBER SPRINGS 9250 20.8 21.1 99 31.7 32.0 99 WILLOW CREEK PASS 9540 16.8 12.5 134 15.9 16.5 96 ----- ----- Basin wide percent of average 92 99 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 18.9 25.3 75 21.9 28.1 78 CASPER MTN. 7850 7.3 14.0 52 15.7 20.7 76 DEADMAN HILL 10220 18.2 18.7 97 18.3 22.0 83 DEER PARK 9700 25.9 17.8 146 29.6 28.0 106 LAPRELE CREEK 8375 .0 5.1 0 12.7 17.4 73 RENO HILL 8500 8.0 11.8 68 15.3 21.4 71 ROACH 9700 15.6 15.6 100 21.8 23.4 93 SAND LAKE 10050 27.0 36.1 75 27.6 30.6 90 SOUTH PASS 9040 19.5 15.8 123 24.5 23.6 104 WINDY PEAK 7900 1.1 3.1 35 10.9 14.4 76 ----- ----- Basin wide percent of average 87 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 2.3 0 18.7 19.2 97 DIVIDE PEAK 8860 17.8 15.6 114 27.9 25.1 111 OLD BATTLE 9920 40.9 36.1 113 -M 41.0 * SANDSTONE RS 8150 4.8 6.2 77 23.2 22.6 103 WHISKEY PARK 8950 26.3 28.2 93 30.8 34.8 89 ----- ----- Basin wide percent of average 102 99 UPPER GREEN RIVER BIG SANDY OPENING 9080 -M 10.9 * -M 16.6 * BLIND BULL SUM 8900 19.3 26.2 74 18.9 25.9 73 EAST RIM DIVIDE 7930 .2 10.9 2 12.4 14.5 86 ELKHART PARK G.S. 9400 12.4 10.9 114 17.4 16.8 104 GROS VENTRE SUMMIT 8750 9.8 11.4 86 13.1 15.9 82 KENDALL R.S. 7740 .2 6.4 3 14.7 17.1 86 LOOMIS PARK 8240 6.6 11.7 56 18.4 20.6 89 NEW FORK LAKE 8340 5.9 5.8 102 13.3 14.0 95 SNIDER BASIN 8060 8.6 9.8 88 16.0 19.0 84 SPRING CREEK DIVIDE 9000 25.6 26.4 97 26.3 30.9 85 TRIPLE PEAK 8500 11.4 19.9 57 23.4 29.5 79 ----- ----- Basin wide percent of average 72 85 LOWER GREEN RIVER HAMS FORK 7840 2.1 3.2 66 17.3 15.3 113 HEWINTA 9500 3.3 6.6 50 15.4 18.4 84 HICKERSON PARK 9100 .5 3.6 14 12.8 10.8 119 HOLE-IN-ROCK 9150 .3 3.0 10 12.7 10.3 123 INDIAN CREEK 9425 32.5 25.7 126 29.5 30.3 97 KELLEY R.S. 8180 13.0 11.2 116 23.5 24.3 97 STEEL CREEK PARK 10100 19.5 18.3 107 19.7 21.0 94 ----- ----- Basin wide percent of average 99 100 UPPER BEAR RIVER BUG LAKE 7950 18.9 13.9 136 27.6 23.1 119 HAYDEN FORK 9100 7.9 9.7 81 28.2 26.0 108 KELLEY R.S. 8180 13.0 11.2 116 23.5 24.3 97 LILY LAKE 9050 8.6 8.4 102 -M 21.9 * MONTE CRISTO 8960 30.6 25.1 122 35.4 31.3 113 SALT RIVER SUMMIT 7600 7.8 7.3 107 20.2 22.2 91 TRIAL LAKE 9960 32.9 24.6 134 34.9 30.4 115 ----- ----- Basin wide percent of average 119 108 ----------------------------------------------------------------------------- -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.