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: APRIL 28 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.4 13.1 41 16.2 24.1 67 COTTONWOOD CREEK 7600 14.1 20.6 68 24.5 31.5 78 GRANITE CREEK 6770 7.6 13.6 56 16.6 22.2 75 GRASSY LAKE 7265 20.0 34.1 59 27.3 40.4 68 GROS VENTRE SUMMIT 8750 10.5 13.5 78 12.2 15.1 81 LEWIS LAKE DIVIDE 7850 -M 35.0 * 24.5 41.2 59 PHILLIPS BENCH 8200 21.2 29.6 72 24.4 32.7 75 SALT RIVER SUMMIT 7600 10.1 11.3 89 18.3 21.3 86 SNAKE RIVER STATION 6920 3.4 13.2 26 15.1 25.2 60 SPRING CREEK DIVIDE 9000 25.2 28.6 88 24.4 29.9 82 THUMB DIVIDE 7980 9.8 15.6 63 14.4 21.7 66 TOGWOTEE PASS 9580 17.7 27.7 64 19.0 28.6 66 TWO OCEAN PLATEAU 9240 25.9 31.6 82 20.7 31.7 65 WILLOW CREEK 8450 22.0 30.8 71 33.3 37.2 90 ----- ----- Basin wide percent of average 68 72 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.7 25.8 65 15.8 23.2 68 BLACK BEAR 8170 34.3 40.1 86 33.6 45.3 74 CANYON 8090 7.3 11.8 62 11.8 17.5 67 FISHER CREEK 9100 26.0 37.6 69 27.4 41.4 66 MADISON PLATEAU 7750 19.4 24.6 79 22.9 30.1 76 NORTHEAST ENTRANCE 7350 .0 7.8 0 8.7 14.6 60 PARKER PEAK 9400 16.8 24.3 69 14.8 19.2 77 SYLVAN LAKE 8420 12.0 23.9 50 18.8 24.3 77 THUMB DIVIDE 7980 9.8 15.6 63 14.4 21.7 66 TWO OCEAN PLATEAU 9240 25.9 31.6 82 20.7 31.7 65 WHISKEY CREEK 6800 11.9 15.7 76 18.2 23.9 76 WHITE MILL 8700 18.5 26.3 70 17.6 30.8 57 WOLVERINE 7650 -M 7.9 * 8.2 15.0 55 ----- ----- Basin wide percent of average 70 69 WIND RIVER BURROUGHS CREEK 8750 11.0 13.9 79 12.2 19.0 64 COLD SPRINGS 9630 3.2 5.2 62 10.1 13.6 74 DEER PARK 9700 23.7 18.3 130 27.2 26.5 103 HOBBS PARK 10100 17.5 17.8 98 17.1 16.5 104 LITTLE WARM 9370 7.1 11.4 62 11.2 16.5 68 SOUTH PASS 9040 19.3 17.9 108 22.6 22.3 101 ST. LAWRENCE ALT 8620 5.7 6.3 90 11.2 11.8 95 TOGWOTEE PASS 9580 17.7 27.7 64 19.0 28.6 66 TOWNSEND CREEK 8700 10.2 9.2 111 16.5 15.1 109 ----- ----- Basin wide percent of average 90 87 BIGHORN BASIN BALD MTN. 9380 16.5 23.3 71 17.1 20.9 82 BEAR TRAP MEADOW 8200 .8 2.9 28 9.1 10.6 86 BLACKWATER 9780 16.7 28.4 59 16.1 24.3 66 BONE SPRINGS DIV 9350 14.2 18.2 78 16.3 17.9 91 EVENING STAR 9200 17.8 33.1 54 21.9 29.5 74 GRAVE SPRINGS 8550 5.5 11.0 50 9.5 12.8 74 KIRWIN 9550 8.9 12.9 69 10.6 13.9 76 MARQUETTE 8760 5.7 11.2 51 9.5 13.3 71 MIDDLE POWDER 7760 9.0 14.2 63 9.2 15.5 59 OWL CREEK 8975 1.7 4.2 40 7.4 8.0 92 POWDER RIVER PASS 9480 8.0 10.9 73 14.2 15.5 92 SHELL CREEK 9580 15.2 16.7 91 14.6 16.5 88 SYLVAN LAKE 8420 12.0 23.9 50 18.8 24.3 77 SYLVAN ROAD 7120 4.3 8.8 49 12.2 20.2 60 TIMBER CREEK 7950 2.0 5.0 40 6.8 10.2 67 YOUNTS PEAK 8350 11.6 18.1 64 12.8 18.6 69 ----- ----- Basin wide percent of average 62 76 SHOSHONE RIVER BLACKWATER 9780 16.7 28.4 59 16.1 24.3 66 EVENING STAR 9200 17.8 33.1 54 21.9 29.5 74 KIRWIN 9550 8.9 12.9 69 10.6 13.9 76 MARQUETTE 8760 5.7 11.2 51 9.5 13.3 71 SYLVAN LAKE 8420 12.0 23.9 50 18.8 24.3 77 SYLVAN ROAD 7120 4.3 8.8 49 12.2 20.2 60 YOUNTS PEAK 8350 11.6 18.1 64 12.8 18.6 69 ----- ----- Basin wide percent of average 56 71 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 2.9 28 9.1 10.6 86 BIG GOOSE 7990 8.4 11.8 71 12.1 12.5 97 BONE SPRINGS DIV 9350 14.2 18.2 78 16.3 17.9 91 BURGESS JUNCTION 7880 10.6 13.3 80 12.5 15.1 83 CLOUD PEAK RESERVOIR 9860 14.7 16.0 92 14.9 16.7 89 DOME LAKE 8880 8.9 13.6 65 14.4 16.4 88 GRAVE SPRINGS 8550 5.5 11.0 50 9.5 12.8 74 HANSEN SAWMILL 8360 1.5 5.1 29 10.6 10.7 99 MIDDLE POWDER 7760 9.0 14.2 63 9.2 15.5 59 POWDER RIVER PASS 9480 8.0 10.9 73 14.2 15.5 92 SUCKER CREEK 8880 11.5 13.2 87 16.2 17.0 95 TIE CREEK 6870 .2 4.2 5 10.9 13.1 83 ----- ----- Basin wide percent of average 69 86 BELLE FOURCHE BLIND PARK 6890 .2 4.7 4 10.0 13.9 72 COLE CANYON 5910 .1 5.4 2 8.3 -M * NORTH RAPID CREEK 6130 .2 4.7 4 7.9 11.1 71 ----- ----- Basin wide percent of average 3 72 UPPER N. PLATTE RIVER COLUMBINE 9160 10.6 21.6 49 -M 28.8 * DIVIDE PEAK 8860 16.6 19.6 85 24.6 23.9 103 ELK RIVER 8700 12.5 15.9 79 22.3 22.7 98 JOE WRIGHT 10120 21.1 24.8 85 23.9 29.6 81 NORTH FRENCH CREEK 10130 25.1 34.1 74 25.4 29.2 87 OLD BATTLE 9920 35.8 36.5 98 37.0 39.4 94 SAGE CREEK BASIN 7850 1.5 11.4 13 16.7 13.9 120 SOUTH BRUSH CREEK 8440 6.4 11.5 56 14.7 19.7 75 TOWER 10500 38.8 51.7 75 40.5 44.5 91 WEBBER SPRINGS 9250 19.6 25.3 77 28.3 30.7 92 WILLOW CREEK PASS 9540 15.2 14.1 108 14.5 15.4 94 ----- ----- Basin wide percent of average 76 92 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 17.2 27.9 62 19.9 26.5 75 CASPER MTN. 7850 9.2 17.0 54 14.1 19.0 74 DEADMAN HILL 10220 16.6 19.4 86 16.3 20.6 79 DEER PARK 9700 23.7 18.3 130 27.2 26.5 103 LAPRELE CREEK 8375 .3 7.7 4 10.6 16.1 66 RENO HILL 8500 8.8 14.9 59 13.3 19.7 68 ROACH 9700 13.6 18.5 74 18.8 22.0 85 SAND LAKE 10050 24.0 36.6 66 24.1 28.8 84 SOUTH PASS 9040 19.3 17.9 108 22.6 22.3 101 WINDY PEAK 7900 2.4 5.5 44 9.2 13.2 70 ----- ----- Basin wide percent of average 74 82 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 5.4 2 16.1 18.3 88 DIVIDE PEAK 8860 16.6 19.6 85 24.6 23.9 103 OLD BATTLE 9920 35.8 36.5 98 37.0 39.4 94 SANDSTONE RS 8150 6.1 10.2 60 20.3 21.6 94 WHISKEY PARK 8950 24.1 30.5 79 27.1 33.3 81 ----- ----- Basin wide percent of average 81 92 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.3 13.8 104 16.2 15.7 103 BLIND BULL SUM 8900 19.5 28.1 69 17.7 24.9 71 EAST RIM DIVIDE 7930 3.8 13.3 29 11.1 13.7 81 ELKHART PARK G.S. 9400 12.5 13.0 96 16.2 15.7 103 GROS VENTRE SUMMIT 8750 10.5 13.5 78 12.2 15.1 81 KENDALL R.S. 7740 4.5 10.7 42 13.8 16.4 84 LOOMIS PARK 8240 9.5 14.8 64 17.1 19.7 87 NEW FORK LAKE 8340 8.6 8.9 97 12.2 13.2 92 SNIDER BASIN 8060 10.9 13.0 84 14.9 18.3 81 SPRING CREEK DIVIDE 9000 25.2 28.6 88 24.4 29.9 82 TRIPLE PEAK 8500 15.0 24.1 62 22.1 28.2 78 ----- ----- Basin wide percent of average 74 84 LOWER GREEN RIVER HAMS FORK 7840 5.2 6.8 76 15.2 14.5 105 HEWINTA 9500 3.4 9.9 34 13.4 17.5 77 HICKERSON PARK 9100 2.6 6.2 42 11.7 10.0 117 HOLE-IN-ROCK 9150 1.4 5.2 27 10.9 9.5 115 INDIAN CREEK 9425 31.0 28.5 109 27.3 29.1 94 KELLEY R.S. 8180 13.9 14.7 95 21.3 23.3 91 STEEL CREEK PARK 10100 16.9 18.4 92 17.7 19.8 89 ----- ----- Basin wide percent of average 83 95 UPPER BEAR RIVER BUG LAKE 7950 19.8 18.7 106 25.1 22.1 114 HAYDEN FORK 9100 9.3 13.7 68 26.4 24.7 107 KELLEY R.S. 8180 13.9 14.7 95 21.3 23.3 91 LILY LAKE 9050 10.0 11.7 85 24.0 20.8 115 MONTE CRISTO 8960 30.9 28.7 108 32.8 29.8 110 SALT RIVER SUMMIT 7600 10.1 11.3 89 18.3 21.3 86 TRIAL LAKE 9960 31.5 26.5 119 32.7 29.0 113 ----- ----- Basin wide percent of average 100 106 ----------------------------------------------------------------------------- -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.