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 SUNDAY: FEBRUARY 25 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.1 15.5 85 16.8 18.1 93 COTTONWOOD CREEK 7600 14.8 17.8 83 17.8 22.4 79 GRANITE CREEK 6770 10.1 15.6 65 13.3 16.9 79 GRASSY LAKE 7265 22.2 28.6 78 29.0 30.1 96 GROS VENTRE SUMMIT 8750 8.2 11.2 73 9.7 10.5 92 LEWIS LAKE DIVIDE 7850 21.8 28.8 76 26.4 30.6 86 PHILLIPS BENCH 8200 15.2 23.1 66 19.4 23.9 81 SALT RIVER SUMMIT 7600 8.9 11.8 75 11.2 15.3 73 SNAKE RIVER STATION 6920 12.7 16.0 79 20.0 18.9 106 SPRING CREEK DIVIDE 9000 14.8 21.5 69 15.6 21.9 71 THUMB DIVIDE 7980 11.0 14.9 74 12.5 15.5 81 TOGWOTEE PASS 9580 15.4 20.2 76 17.4 20.1 87 TWO OCEAN PLATEAU 9240 20.6 22.7 91 19.6 22.7 86 WILLOW CREEK 8450 18.6 24.6 76 23.3 26.3 89 ----- ----- Basin wide percent of average 76 86 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 15.9 19.3 82 15.5 16.7 93 BLACK BEAR 8170 26.6 31.8 84 28.9 32.3 89 CANYON 8090 9.8 11.0 89 12.8 12.7 101 FISHER CREEK 9100 25.5 28.7 89 25.8 29.7 87 MADISON PLATEAU 7750 14.8 20.2 73 18.3 21.4 86 NORTHEAST ENTRANCE 7350 7.5 9.4 80 11.0 10.5 105 PARKER PEAK 9400 15.8 17.7 89 14.7 13.3 111 SYLVAN LAKE 8420 13.0 18.2 71 18.2 17.5 104 THUMB DIVIDE 7980 11.0 14.9 74 12.5 15.5 81 TWO OCEAN PLATEAU 9240 20.6 22.7 91 19.6 22.7 86 WHISKEY CREEK 6800 10.1 13.9 73 14.8 16.9 88 WHITE MILL 8700 15.9 19.7 81 16.8 22.1 76 WOLVERINE 7650 8.0 10.3 78 9.7 10.9 89 ----- ----- Basin wide percent of average 82 90 WIND RIVER BURROUGHS CREEK 8750 10.4 12.2 85 12.1 13.4 90 COLD SPRINGS 9630 4.7 7.0 67 6.1 8.2 74 DEER PARK 9700 8.7 14.2 61 11.9 17.3 69 HOBBS PARK 10100 7.9 11.6 68 7.7 9.7 79 LITTLE WARM 9370 6.3 9.2 68 7.5 10.6 71 SOUTH PASS 9040 9.5 13.6 70 10.8 14.6 74 ST. LAWRENCE ALT 8620 4.0 5.7 70 5.3 6.8 78 TOGWOTEE PASS 9580 15.4 20.2 76 17.4 20.1 87 TOWNSEND CREEK 8700 5.1 6.7 76 7.7 8.7 89 ----- ----- Basin wide percent of average 72 79 BIGHORN BASIN BALD MTN. 9380 14.6 15.6 94 11.2 13.8 81 BEAR TRAP MEADOW 8200 4.2 4.2 100 4.8 6.3 76 BLACKWATER 9780 16.7 19.8 84 15.9 16.8 95 BONE SPRINGS DIV 9350 12.9 12.8 101 11.5 11.3 102 EVENING STAR 9200 18.9 24.2 78 22.1 21.2 104 GRAVE SPRINGS 8550 5.2 7.1 73 5.5 7.6 72 KIRWIN 9550 7.6 8.9 85 8.9 9.0 99 MARQUETTE 8760 2.1 6.7 31 5.6 7.3 77 MIDDLE POWDER 7760 7.3 8.7 84 6.4 9.4 68 OWL CREEK 8975 4.6 4.0 115 5.1 4.3 119 POWDER RIVER PASS 9480 7.1 8.5 84 7.9 9.8 81 SHELL CREEK 9580 10.9 11.5 95 8.6 10.6 81 SYLVAN LAKE 8420 13.0 18.2 71 18.2 17.5 104 SYLVAN ROAD 7120 8.0 11.1 72 14.0 15.3 92 TIMBER CREEK 7950 2.3 4.1 56 5.5 5.3 104 YOUNTS PEAK 8350 9.7 14.2 68 11.3 13.3 85 ----- ----- Basin wide percent of average 81 91 SHOSHONE RIVER BLACKWATER 9780 16.7 19.8 84 15.9 16.8 95 EVENING STAR 9200 18.9 24.2 78 22.1 21.2 104 KIRWIN 9550 7.6 8.9 85 8.9 9.0 99 MARQUETTE 8760 2.1 6.7 31 5.6 7.3 77 SYLVAN LAKE 8420 13.0 18.2 71 18.2 17.5 104 SYLVAN ROAD 7120 8.0 11.1 72 14.0 15.3 92 YOUNTS PEAK 8350 9.7 14.2 68 11.3 13.3 85 ----- ----- Basin wide percent of average 74 96 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.2 4.2 100 4.8 6.3 76 BIG GOOSE 7990 5.2 7.4 70 6.5 6.6 98 BONE SPRINGS DIV 9350 12.9 12.8 101 11.5 11.3 102 BURGESS JUNCTION 7880 8.4 8.7 97 9.2 9.3 99 CLOUD PEAK RESERVOIR 9860 9.1 9.7 94 7.4 9.6 77 DOME LAKE 8880 8.0 9.3 86 9.0 10.0 90 GRAVE SPRINGS 8550 5.2 7.1 73 5.5 7.6 72 HANSEN SAWMILL 8360 2.5 5.0 50 3.9 6.2 63 MIDDLE POWDER 7760 7.3 8.7 84 6.4 9.4 68 POWDER RIVER PASS 9480 7.1 8.5 84 7.9 9.8 81 SUCKER CREEK 8880 9.9 8.8 112 10.8 10.3 105 TIE CREEK 6870 3.9 4.8 81 8.2 7.7 106 ----- ----- Basin wide percent of average 88 88 BELLE FOURCHE BLIND PARK 6890 4.6 6.8 68 7.8 9.1 86 COLE CANYON 5910 4.7 4.9 96 6.7 -M * NORTH RAPID CREEK 6130 5.2 6.5 80 6.2 7.3 85 ----- ----- Basin wide percent of average 80 85 UPPER N. PLATTE RIVER COLUMBINE 9160 15.3 21.2 72 16.7 20.3 82 DIVIDE PEAK 8860 14.7 15.2 97 16.0 16.5 97 ELK RIVER 8700 14.0 15.6 90 14.0 15.6 90 JOE WRIGHT 10120 15.8 16.8 94 17.7 19.6 90 NORTH FRENCH CREEK 10130 19.2 22.0 87 19.1 19.7 97 OLD BATTLE 9920 19.5 25.4 77 23.4 27.6 85 SAGE CREEK BASIN 7850 10.5 8.8 119 10.3 9.6 107 SOUTH BRUSH CREEK 8440 10.5 9.6 109 11.8 13.0 91 TOWER 10500 24.3 36.5 67 25.5 31.0 82 WEBBER SPRINGS 9250 15.0 20.5 73 19.2 21.5 89 WILLOW CREEK PASS 9540 10.9 9.3 117 10.5 10.1 104 ----- ----- Basin wide percent of average 84 90 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 15.3 18.5 83 15.7 17.0 92 CASPER MTN. 7850 8.8 11.0 80 9.7 10.8 90 DEADMAN HILL 10220 13.1 12.6 104 14.1 12.9 109 DEER PARK 9700 8.7 14.2 61 11.9 17.3 69 LAPRELE CREEK 8375 6.6 8.6 77 7.7 9.7 79 RENO HILL 8500 10.4 10.1 103 11.1 11.2 99 ROACH 9700 13.2 13.5 98 15.0 14.4 104 SAND LAKE 10050 19.5 24.3 80 19.1 18.8 102 SOUTH PASS 9040 9.5 13.6 70 10.8 14.6 74 WINDY PEAK 7900 6.2 5.8 107 7.6 8.3 92 ----- ----- Basin wide percent of average 84 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.1 9.4 76 10.4 12.0 87 DIVIDE PEAK 8860 14.7 15.2 97 16.0 16.5 97 OLD BATTLE 9920 19.5 25.4 77 23.4 27.6 85 SANDSTONE RS 8150 8.9 12.1 74 12.4 15.2 82 WHISKEY PARK 8950 16.6 23.0 72 19.6 22.8 86 ----- ----- Basin wide percent of average 78 87 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.5 11.7 81 9.1 11.0 83 BLIND BULL SUM 8900 17.5 22.4 78 14.0 18.6 75 EAST RIM DIVIDE 7930 6.8 10.6 64 7.9 9.9 80 ELKHART PARK G.S. 9400 7.4 10.8 69 8.7 10.6 82 GROS VENTRE SUMMIT 8750 8.2 11.2 73 9.7 10.5 92 KENDALL R.S. 7740 8.4 12.0 70 10.0 12.1 83 LOOMIS PARK 8240 9.3 14.0 66 11.8 14.4 82 NEW FORK LAKE 8340 6.9 9.3 74 7.4 9.4 79 SNIDER BASIN 8060 8.4 12.0 70 9.4 13.3 71 SPRING CREEK DIVIDE 9000 14.8 21.5 69 15.6 21.9 71 TRIPLE PEAK 8500 15.0 20.2 74 17.8 20.1 89 ----- ----- Basin wide percent of average 72 80 LOWER GREEN RIVER HAMS FORK 7840 7.1 10.6 67 7.2 10.1 71 HEWINTA 9500 5.9 8.7 68 10.5 11.3 93 HICKERSON PARK 9100 5.4 5.6 96 8.0 6.1 131 HOLE-IN-ROCK 9150 5.9 5.5 107 7.6 5.7 133 INDIAN CREEK 9425 15.8 21.6 73 14.0 20.5 68 KELLEY R.S. 8180 9.9 13.5 73 12.2 16.7 73 STEEL CREEK PARK 10100 9.0 12.2 74 11.0 12.5 88 ----- ----- Basin wide percent of average 76 85 UPPER BEAR RIVER BUG LAKE 7950 10.4 16.5 63 11.5 15.7 73 HAYDEN FORK 9100 9.0 12.7 71 15.6 16.6 94 KELLEY R.S. 8180 9.9 13.5 73 12.2 16.7 73 LILY LAKE 9050 -M 10.4 * -M 13.9 * MONTE CRISTO 8960 15.7 23.8 66 16.5 20.5 80 SALT RIVER SUMMIT 7600 8.9 11.8 75 11.2 15.3 73 TRIAL LAKE 9960 11.7 19.9 59 15.3 19.8 77 ----- ----- Basin wide percent of average 67 79 ----------------------------------------------------------------------------- -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.