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 6 , 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 10.2 18 16.8 24.8 68 COTTONWOOD CREEK 7600 12.2 17.7 69 25.9 32.5 80 GRANITE CREEK 6770 4.8 11.0 44 17.5 22.8 77 GRASSY LAKE 7265 16.3 30.9 53 27.7 41.6 67 GROS VENTRE SUMMIT 8750 10.3 12.1 85 12.9 15.7 82 LEWIS LAKE DIVIDE 7850 17.7 32.6 54 24.9 42.2 59 PHILLIPS BENCH 8200 20.0 27.5 73 25.0 33.7 74 SALT RIVER SUMMIT 7600 8.6 8.6 100 19.3 22.0 88 SNAKE RIVER STATION 6920 .3 9.9 3 15.4 26.0 59 SPRING CREEK DIVIDE 9000 25.8 27.2 95 25.6 30.7 83 THUMB DIVIDE 7980 6.4 13.0 49 14.8 22.5 66 TOGWOTEE PASS 9580 18.2 27.7 66 19.5 29.6 66 TWO OCEAN PLATEAU 9240 26.2 31.4 83 21.1 32.8 64 WILLOW CREEK 8450 20.5 28.7 71 34.8 38.5 90 ----- ----- Basin wide percent of average 66 73 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.0 25.8 70 16.3 24.1 68 BLACK BEAR 8170 33.9 38.7 88 34.4 46.5 74 CANYON 8090 5.1 9.8 52 12.0 18.2 66 FISHER CREEK 9100 24.0 37.4 64 28.4 42.7 67 MADISON PLATEAU 7750 17.7 22.5 79 23.2 31.0 75 NORTHEAST ENTRANCE 7350 .0 5.7 0 8.9 15.3 58 PARKER PEAK 9400 16.5 24.3 68 15.2 20.1 76 SYLVAN LAKE 8420 10.2 22.6 45 19.2 25.4 76 THUMB DIVIDE 7980 6.4 13.0 49 14.8 22.5 66 TWO OCEAN PLATEAU 9240 26.2 31.4 83 21.1 32.8 64 WHISKEY CREEK 6800 10.3 13.3 77 18.3 24.7 74 WHITE MILL 8700 18.6 25.8 72 18.1 31.8 57 WOLVERINE 7650 .0 5.8 0 9.0 15.7 57 ----- ----- Basin wide percent of average 68 68 WIND RIVER BURROUGHS CREEK 8750 11.4 12.5 91 13.2 19.8 67 COLD SPRINGS 9630 3.3 4.3 77 10.7 14.4 74 DEER PARK 9700 25.1 18.1 139 28.7 27.6 104 HOBBS PARK 10100 18.0 17.5 103 17.8 17.6 101 LITTLE WARM 9370 7.1 9.9 72 11.9 17.3 69 SOUTH PASS 9040 19.9 16.6 120 23.7 23.2 102 ST. LAWRENCE ALT 8620 5.3 5.2 102 11.6 12.6 92 TOGWOTEE PASS 9580 18.2 27.7 66 19.5 29.6 66 TOWNSEND CREEK 8700 9.7 7.9 123 17.2 16.0 108 ----- ----- Basin wide percent of average 99 87 BIGHORN BASIN BALD MTN. 9380 17.0 23.4 73 17.9 21.9 82 BEAR TRAP MEADOW 8200 .2 1.9 11 9.5 11.4 83 BLACKWATER 9780 16.8 28.8 58 16.9 25.4 67 BONE SPRINGS DIV 9350 14.5 17.6 82 17.2 18.9 91 EVENING STAR 9200 17.8 33.0 54 22.4 30.6 73 GRAVE SPRINGS 8550 5.3 10.0 53 10.0 13.6 74 KIRWIN 9550 9.3 12.3 76 11.3 14.7 77 MARQUETTE 8760 6.0 10.4 58 9.9 14.4 69 MIDDLE POWDER 7760 8.8 13.2 67 9.6 16.3 59 OWL CREEK 8975 2.0 3.4 59 8.1 8.7 93 POWDER RIVER PASS 9480 6.9 9.8 70 14.7 16.4 90 SHELL CREEK 9580 15.5 16.6 93 15.1 17.4 87 SYLVAN LAKE 8420 10.2 22.6 45 19.2 25.4 76 SYLVAN ROAD 7120 .5 6.2 8 12.2 21.0 58 TIMBER CREEK 7950 1.9 3.9 49 7.0 11.1 63 YOUNTS PEAK 8350 11.4 17.1 67 13.3 19.3 69 ----- ----- Basin wide percent of average 63 75 SHOSHONE RIVER BLACKWATER 9780 16.8 28.8 58 16.9 25.4 67 EVENING STAR 9200 17.8 33.0 54 22.4 30.6 73 KIRWIN 9550 9.3 12.3 76 11.3 14.7 77 MARQUETTE 8760 6.0 10.4 58 9.9 14.4 69 SYLVAN LAKE 8420 10.2 22.6 45 19.2 25.4 76 SYLVAN ROAD 7120 .5 6.2 8 12.2 21.0 58 YOUNTS PEAK 8350 11.4 17.1 67 13.3 19.3 69 ----- ----- Basin wide percent of average 55 70 POWDER-TONGUE BEAR TRAP MEADOW 8200 .2 1.9 11 9.5 11.4 83 BIG GOOSE 7990 8.1 10.7 76 12.8 13.5 95 BONE SPRINGS DIV 9350 14.5 17.6 82 17.2 18.9 91 BURGESS JUNCTION 7880 10.2 12.2 84 13.4 15.9 84 CLOUD PEAK RESERVOIR 9860 15.1 15.7 96 15.7 17.8 88 DOME LAKE 8880 7.9 12.4 64 14.8 17.4 85 GRAVE SPRINGS 8550 5.3 10.0 53 10.0 13.6 74 HANSEN SAWMILL 8360 .0 3.9 0 11.2 11.5 97 MIDDLE POWDER 7760 8.8 13.2 67 9.6 16.3 59 POWDER RIVER PASS 9480 6.9 9.8 70 14.7 16.4 90 SUCKER CREEK 8880 10.7 12.1 88 16.9 18.1 93 TIE CREEK 6870 .0 3.0 0 11.2 14.1 79 ----- ----- Basin wide percent of average 72 85 BELLE FOURCHE BLIND PARK 6890 .0 2.6 0 10.3 14.8 70 COLE CANYON 5910 .0 4.5 0 9.2 -M * NORTH RAPID CREEK 6130 .3 2.7 11 8.3 11.8 70 ----- ----- Basin wide percent of average 3 70 UPPER N. PLATTE RIVER COLUMBINE 9160 9.4 18.1 52 -M 29.7 * DIVIDE PEAK 8860 17.3 17.0 102 26.4 24.8 106 ELK RIVER 8700 12.4 12.4 100 24.4 23.5 104 JOE WRIGHT 10120 22.0 24.6 89 25.4 30.9 82 NORTH FRENCH CREEK 10130 26.7 34.0 79 27.4 30.4 90 OLD BATTLE 9920 38.8 36.4 107 -M 40.6 * SAGE CREEK BASIN 7850 .8 9.8 8 17.8 14.4 124 SOUTH BRUSH CREEK 8440 5.0 9.5 53 17.2 20.7 83 TOWER 10500 41.2 52.0 79 43.2 45.9 94 WEBBER SPRINGS 9250 20.8 22.6 92 30.4 31.7 96 WILLOW CREEK PASS 9540 16.1 13.1 123 15.3 16.2 94 ----- ----- Basin wide percent of average 84 95 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 18.0 26.4 68 21.2 27.7 77 CASPER MTN. 7850 8.3 15.2 55 14.8 20.2 73 DEADMAN HILL 10220 17.9 19.1 94 17.9 21.6 83 DEER PARK 9700 25.1 18.1 139 28.7 27.6 104 LAPRELE CREEK 8375 .0 5.8 0 12.1 17.1 71 RENO HILL 8500 8.3 12.9 64 14.4 20.9 69 ROACH 9700 14.6 16.7 87 20.4 23.0 89 SAND LAKE 10050 25.2 36.5 69 25.7 30.1 85 SOUTH PASS 9040 19.9 16.6 120 23.7 23.2 102 WINDY PEAK 7900 2.6 3.8 68 10.9 14.1 77 ----- ----- Basin wide percent of average 82 84 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 3.2 6 17.9 19.0 94 DIVIDE PEAK 8860 17.3 17.0 102 26.4 24.8 106 OLD BATTLE 9920 38.8 36.4 107 -M 40.6 * SANDSTONE RS 8150 4.9 7.5 65 21.6 22.4 96 WHISKEY PARK 8950 25.1 29.1 86 28.8 34.4 84 ----- ----- Basin wide percent of average 93 94 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.4 11.9 121 17.2 16.3 106 BLIND BULL SUM 8900 20.1 26.8 75 18.6 25.7 72 EAST RIM DIVIDE 7930 2.6 11.7 22 12.3 14.3 86 ELKHART PARK G.S. 9400 12.9 11.6 111 17.1 16.5 104 GROS VENTRE SUMMIT 8750 10.3 12.1 85 12.9 15.7 82 KENDALL R.S. 7740 .6 7.8 8 14.5 16.9 86 LOOMIS PARK 8240 8.8 12.7 69 18.2 20.3 90 NEW FORK LAKE 8340 7.6 6.8 112 13.1 13.8 95 SNIDER BASIN 8060 10.4 10.8 96 15.7 18.8 84 SPRING CREEK DIVIDE 9000 25.8 27.2 95 25.6 30.7 83 TRIPLE PEAK 8500 13.7 21.3 64 23.0 29.1 79 ----- ----- Basin wide percent of average 79 86 LOWER GREEN RIVER HAMS FORK 7840 3.6 4.2 86 16.6 15.1 110 HEWINTA 9500 3.3 7.6 43 14.5 18.2 80 HICKERSON PARK 9100 1.5 4.4 34 12.5 10.6 118 HOLE-IN-ROCK 9150 .9 3.6 25 12.2 10.1 121 INDIAN CREEK 9425 32.0 26.7 120 28.6 30.0 95 KELLEY R.S. 8180 13.3 12.3 108 22.6 24.0 94 STEEL CREEK PARK 10100 18.5 18.4 101 19.0 20.7 92 ----- ----- Basin wide percent of average 95 98 UPPER BEAR RIVER BUG LAKE 7950 19.5 15.5 126 27.1 22.8 119 HAYDEN FORK 9100 8.5 11.0 77 27.6 25.6 108 KELLEY R.S. 8180 13.3 12.3 108 22.6 24.0 94 LILY LAKE 9050 8.8 9.4 94 23.3 21.6 108 MONTE CRISTO 8960 31.5 26.3 120 35.0 30.9 113 SALT RIVER SUMMIT 7600 8.6 8.6 100 19.3 22.0 88 TRIAL LAKE 9960 32.8 25.3 130 34.2 30.0 114 ----- ----- Basin wide percent of average 113 107 ----------------------------------------------------------------------------- -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.