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 SATURDAY: MARCH 19 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.0 17.5 63 13.6 20.4 67 COTTONWOOD CREEK 7600 15.9 22.1 72 18.2 25.8 71 GRANITE CREEK 6770 11.1 18.1 61 14.0 19.0 74 GRASSY LAKE 7265 21.6 33.6 64 22.4 34.1 66 GROS VENTRE SUMMIT 8750 9.4 13.3 71 9.3 12.1 77 LEWIS LAKE DIVIDE 7850 19.8 33.5 59 20.3 34.8 58 PHILLIPS BENCH 8200 20.1 27.1 74 19.9 27.4 73 SALT RIVER SUMMIT 7600 10.9 13.7 80 14.3 17.7 81 SNAKE RIVER STATION 6920 10.6 18.5 57 13.0 21.2 61 SPRING CREEK DIVIDE 9000 21.3 25.0 85 20.2 25.0 81 THUMB DIVIDE 7980 11.6 17.8 65 11.4 17.8 64 TOGWOTEE PASS 9580 14.8 23.3 64 14.9 23.1 65 TWO OCEAN PLATEAU 9240 20.4 26.3 78 16.7 26.1 64 WILLOW CREEK 8450 22.1 28.6 77 24.8 30.3 82 ----- ----- Basin wide percent of average 69 70 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 13.6 22.3 61 12.3 19.0 65 BLACK BEAR 8170 28.8 37.2 77 26.6 37.7 71 CANYON 8090 8.2 13.0 63 9.6 14.5 66 FISHER CREEK 9100 22.1 33.0 67 20.8 34.2 61 MADISON PLATEAU 7750 16.3 23.7 69 17.4 25.0 70 NORTHEAST ENTRANCE 7350 5.3 10.8 49 6.7 12.0 56 PARKER PEAK 9400 13.7 20.4 67 11.4 15.3 75 SYLVAN LAKE 8420 13.0 21.1 62 14.7 19.8 74 THUMB DIVIDE 7980 11.6 17.8 65 11.4 17.8 64 TWO OCEAN PLATEAU 9240 20.4 26.3 78 16.7 26.1 64 WHISKEY CREEK 6800 11.3 16.3 69 14.2 19.6 72 WHITE MILL 8700 14.7 22.8 64 13.7 25.4 54 WOLVERINE 7650 7.0 11.4 61 6.7 12.2 55 ----- ----- Basin wide percent of average 67 65 WIND RIVER BURROUGHS CREEK 8750 8.6 13.8 62 8.9 15.3 58 COLD SPRINGS 9630 6.7 8.2 82 7.3 9.7 75 DEER PARK 9700 20.4 15.7 130 22.6 20.3 111 HOBBS PARK 10100 13.2 13.6 97 11.8 11.6 102 LITTLE WARM 9370 7.1 10.9 65 8.0 12.4 65 SOUTH PASS 9040 18.3 15.7 117 18.5 17.1 108 ST. LAWRENCE ALT 8620 6.3 6.8 93 7.5 8.1 93 TOGWOTEE PASS 9580 14.8 23.3 64 14.9 23.1 65 TOWNSEND CREEK 8700 9.2 7.9 116 12.1 10.5 115 ----- ----- Basin wide percent of average 90 87 BIGHORN BASIN BALD MTN. 9380 14.6 18.1 81 13.4 16.1 83 BEAR TRAP MEADOW 8200 4.1 5.0 82 6.4 7.5 85 BLACKWATER 9780 12.8 23.0 56 11.9 19.2 62 BONE SPRINGS DIV 9350 13.0 14.9 87 12.7 13.4 95 EVENING STAR 9200 15.5 28.0 55 17.2 23.9 72 GRAVE SPRINGS 8550 5.9 8.5 69 7.2 8.9 81 KIRWIN 9550 6.0 10.4 58 6.8 10.4 65 MARQUETTE 8760 3.8 7.9 48 5.5 8.8 62 MIDDLE POWDER 7760 6.7 10.5 64 6.4 11.2 57 OWL CREEK 8975 3.3 4.9 67 3.4 5.3 64 POWDER RIVER PASS 9480 10.1 10.0 101 11.1 11.4 97 SHELL CREEK 9580 12.2 13.4 91 10.8 12.3 88 SYLVAN LAKE 8420 13.0 21.1 62 14.7 19.8 74 SYLVAN ROAD 7120 8.1 12.4 65 10.6 16.9 63 TIMBER CREEK 7950 2.4 5.1 47 3.1 6.6 47 YOUNTS PEAK 8350 9.5 16.1 59 9.4 15.2 62 ----- ----- Basin wide percent of average 67 73 SHOSHONE RIVER BLACKWATER 9780 12.8 23.0 56 11.9 19.2 62 EVENING STAR 9200 15.5 28.0 55 17.2 23.9 72 KIRWIN 9550 6.0 10.4 58 6.8 10.4 65 MARQUETTE 8760 3.8 7.9 48 5.5 8.8 62 SYLVAN LAKE 8420 13.0 21.1 62 14.7 19.8 74 SYLVAN ROAD 7120 8.1 12.4 65 10.6 16.9 63 YOUNTS PEAK 8350 9.5 16.1 59 9.4 15.2 62 ----- ----- Basin wide percent of average 58 67 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.1 5.0 82 6.4 7.5 85 BIG GOOSE 7990 7.0 9.2 76 8.1 7.8 104 BONE SPRINGS DIV 9350 13.0 14.9 87 12.7 13.4 95 BURGESS JUNCTION 7880 8.6 10.4 83 9.5 11.1 86 CLOUD PEAK RESERVOIR 9860 12.6 11.9 106 10.2 11.6 88 DOME LAKE 8880 9.6 11.0 87 10.4 11.9 87 GRAVE SPRINGS 8550 5.9 8.5 69 7.2 8.9 81 HANSEN SAWMILL 8360 5.3 6.0 88 6.5 7.4 88 MIDDLE POWDER 7760 6.7 10.5 64 6.4 11.2 57 POWDER RIVER PASS 9480 10.1 10.0 101 11.1 11.4 97 SUCKER CREEK 8880 10.7 10.5 102 12.0 12.3 98 TIE CREEK 6870 2.2 5.9 37 7.6 9.1 84 ----- ----- Basin wide percent of average 84 87 BELLE FOURCHE BLIND PARK 6890 4.9 8.4 58 7.0 10.3 68 COLE CANYON 5910 2.8 5.7 49 5.4 -M * NORTH RAPID CREEK 6130 3.7 7.7 48 5.8 8.1 72 ----- ----- Basin wide percent of average 52 70 UPPER N. PLATTE RIVER COLUMBINE 9160 17.5 24.1 73 18.7 23.5 80 DIVIDE PEAK 8860 18.2 18.2 100 20.8 19.2 108 ELK RIVER 8700 18.6 18.1 103 18.6 18.2 102 JOE WRIGHT 10120 16.6 19.6 85 17.4 22.9 76 NORTH FRENCH CREEK 10130 21.4 26.4 81 20.3 22.9 89 OLD BATTLE 9920 30.4 30.0 101 32.0 32.2 99 SAGE CREEK BASIN 7850 13.7 10.6 129 14.7 11.2 131 SOUTH BRUSH CREEK 8440 9.4 12.0 78 10.9 15.1 72 TOWER 10500 32.9 42.3 78 31.6 35.8 88 WEBBER SPRINGS 9250 21.7 24.8 88 24.5 24.8 99 WILLOW CREEK PASS 9540 12.1 11.0 110 11.2 11.9 94 ----- ----- Basin wide percent of average 90 93 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 15.7 21.7 72 14.9 20.2 74 CASPER MTN. 7850 9.2 13.0 71 10.0 13.0 77 DEADMAN HILL 10220 13.6 14.9 91 11.4 15.4 74 DEER PARK 9700 20.4 15.7 130 22.6 20.3 111 LAPRELE CREEK 8375 6.2 10.2 61 8.3 11.5 72 RENO HILL 8500 8.2 12.5 66 8.8 13.5 65 ROACH 9700 12.8 15.7 82 15.2 17.1 89 SAND LAKE 10050 20.2 29.6 68 18.7 22.1 85 SOUTH PASS 9040 18.3 15.7 117 18.5 17.1 108 WINDY PEAK 7900 5.5 7.4 74 7.3 9.7 75 ----- ----- Basin wide percent of average 83 85 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.9 11.2 115 12.7 14.4 88 DIVIDE PEAK 8860 18.2 18.2 100 20.8 19.2 108 OLD BATTLE 9920 30.4 30.0 101 32.0 32.2 99 SANDSTONE RS 8150 11.5 14.3 80 17.0 17.5 97 WHISKEY PARK 8950 24.0 28.0 86 22.5 26.5 85 ----- ----- Basin wide percent of average 95 96 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.1 13.6 104 13.5 12.6 107 BLIND BULL SUM 8900 17.1 26.3 65 14.5 21.1 69 EAST RIM DIVIDE 7930 7.5 12.4 60 8.4 11.4 74 ELKHART PARK G.S. 9400 10.0 12.6 79 11.2 12.4 90 GROS VENTRE SUMMIT 8750 9.4 13.3 71 9.3 12.1 77 KENDALL R.S. 7740 10.1 14.1 72 11.1 13.8 80 LOOMIS PARK 8240 12.4 16.5 75 12.8 16.4 78 NEW FORK LAKE 8340 9.0 10.7 84 8.3 10.6 78 SNIDER BASIN 8060 12.4 13.9 89 12.9 15.2 85 SPRING CREEK DIVIDE 9000 21.3 25.0 85 20.2 25.0 81 TRIPLE PEAK 8500 17.4 23.6 74 18.2 23.3 78 ----- ----- Basin wide percent of average 77 81 LOWER GREEN RIVER HAMS FORK 7840 10.1 12.2 83 11.3 11.5 98 HEWINTA 9500 10.0 10.8 93 10.8 13.4 81 HICKERSON PARK 9100 7.9 6.8 116 9.7 7.2 135 HOLE-IN-ROCK 9150 6.0 6.6 91 8.9 6.8 131 INDIAN CREEK 9425 24.4 25.8 95 20.9 23.8 88 KELLEY R.S. 8180 14.5 16.0 91 16.4 19.2 85 STEEL CREEK PARK 10100 13.1 14.6 90 13.7 14.9 92 ----- ----- Basin wide percent of average 93 95 UPPER BEAR RIVER BUG LAKE 7950 18.8 19.6 96 20.1 18.1 111 HAYDEN FORK 9100 16.7 15.3 109 21.3 19.5 109 KELLEY R.S. 8180 14.5 16.0 91 16.4 19.2 85 LILY LAKE 9050 14.6 12.3 119 15.7 16.2 97 MONTE CRISTO 8960 25.7 28.2 91 25.3 23.8 106 SALT RIVER SUMMIT 7600 10.9 13.7 80 14.3 17.7 81 TRIAL LAKE 9960 26.7 23.5 114 27.4 23.2 118 ----- ----- Basin wide percent of average 99 102 ----------------------------------------------------------------------------- -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.