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: FEBRUARY 17 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.2 14.6 70 11.8 17.0 69 COTTONWOOD CREEK 7600 12.7 16.4 77 14.8 21.2 70 GRANITE CREEK 6770 10.1 14.5 70 12.6 15.8 80 GRASSY LAKE 7265 18.8 26.7 70 20.1 28.4 71 GROS VENTRE SUMMIT 8750 8.6 10.6 81 8.6 9.9 87 LEWIS LAKE DIVIDE 7850 17.6 26.9 65 17.6 28.7 61 PHILLIPS BENCH 8200 17.3 21.5 80 17.9 22.4 80 SALT RIVER SUMMIT 7600 9.4 11.0 85 12.6 14.4 88 SNAKE RIVER STATION 6920 9.3 14.9 62 11.7 17.8 66 SPRING CREEK DIVIDE 9000 18.1 20.1 90 17.6 20.7 85 THUMB DIVIDE 7980 10.6 13.8 77 10.4 14.6 71 TOGWOTEE PASS 9580 12.5 19.1 65 12.6 19.0 66 TWO OCEAN PLATEAU 9240 17.5 21.4 82 14.6 21.3 69 WILLOW CREEK 8450 17.8 23.1 77 20.6 24.8 83 ----- ----- Basin wide percent of average 75 74 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 10.9 18.4 59 9.8 15.8 62 BLACK BEAR 8170 26.3 29.6 89 23.7 30.2 78 CANYON 8090 7.1 10.3 69 8.4 12.1 69 FISHER CREEK 9100 18.8 27.0 70 17.4 28.0 62 MADISON PLATEAU 7750 15.2 18.8 81 16.6 20.1 83 NORTHEAST ENTRANCE 7350 4.1 8.9 46 5.4 10.0 54 PARKER PEAK 9400 11.6 16.7 69 9.5 12.6 75 SYLVAN LAKE 8420 11.1 17.0 65 12.9 16.6 78 THUMB DIVIDE 7980 10.6 13.8 77 10.4 14.6 71 TWO OCEAN PLATEAU 9240 17.5 21.4 82 14.6 21.3 69 WHISKEY CREEK 6800 10.6 12.9 82 13.4 15.9 84 WHITE MILL 8700 12.1 18.4 66 11.3 20.8 54 WOLVERINE 7650 5.9 9.8 60 5.8 10.3 56 ----- ----- Basin wide percent of average 73 70 WIND RIVER BURROUGHS CREEK 8750 7.3 11.5 63 7.4 12.7 58 COLD SPRINGS 9630 6.1 6.5 94 6.6 7.8 85 DEER PARK 9700 18.9 13.8 137 21.0 16.4 128 HOBBS PARK 10100 12.0 10.9 110 10.8 9.2 117 LITTLE WARM 9370 6.3 8.6 73 7.0 10.1 69 SOUTH PASS 9040 16.5 12.7 130 17.2 13.8 125 ST. LAWRENCE ALT 8620 5.5 5.3 104 6.7 6.4 105 TOGWOTEE PASS 9580 12.5 19.1 65 12.6 19.0 66 TOWNSEND CREEK 8700 8.1 6.4 127 11.4 8.2 139 ----- ----- Basin wide percent of average 98 97 BIGHORN BASIN BALD MTN. 9380 11.4 14.7 78 10.4 13.1 79 BEAR TRAP MEADOW 8200 3.0 4.0 75 5.1 6.0 85 BLACKWATER 9780 10.9 18.6 59 10.2 15.9 64 BONE SPRINGS DIV 9350 10.1 11.9 85 9.6 10.7 90 EVENING STAR 9200 13.0 22.7 57 14.4 20.0 72 GRAVE SPRINGS 8550 4.4 6.6 67 6.2 7.2 86 KIRWIN 9550 5.2 8.4 62 5.8 8.5 68 MARQUETTE 8760 2.6 6.4 41 4.5 6.9 65 MIDDLE POWDER 7760 4.5 8.2 55 5.4 9.0 60 OWL CREEK 8975 2.8 3.8 74 3.0 4.1 73 POWDER RIVER PASS 9480 8.3 8.0 104 8.8 9.3 95 SHELL CREEK 9580 9.9 10.9 91 8.8 10.2 86 SYLVAN LAKE 8420 11.1 17.0 65 12.9 16.6 78 SYLVAN ROAD 7120 6.7 10.4 64 9.3 14.6 64 TIMBER CREEK 7950 1.4 3.9 36 2.3 5.0 46 YOUNTS PEAK 8350 7.9 13.4 59 7.9 12.7 62 ----- ----- Basin wide percent of average 67 73 SHOSHONE RIVER BLACKWATER 9780 10.9 18.6 59 10.2 15.9 64 EVENING STAR 9200 13.0 22.7 57 14.4 20.0 72 KIRWIN 9550 5.2 8.4 62 5.8 8.5 68 MARQUETTE 8760 2.6 6.4 41 4.5 6.9 65 SYLVAN LAKE 8420 11.1 17.0 65 12.9 16.6 78 SYLVAN ROAD 7120 6.7 10.4 64 9.3 14.6 64 YOUNTS PEAK 8350 7.9 13.4 59 7.9 12.7 62 ----- ----- Basin wide percent of average 59 68 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.0 4.0 75 5.1 6.0 85 BIG GOOSE 7990 5.1 6.9 74 6.3 6.3 100 BONE SPRINGS DIV 9350 10.1 11.9 85 9.6 10.7 90 BURGESS JUNCTION 7880 5.7 8.2 70 7.0 8.8 80 CLOUD PEAK RESERVOIR 9860 9.8 9.1 108 8.1 9.1 89 DOME LAKE 8880 7.5 8.8 85 8.3 9.6 86 GRAVE SPRINGS 8550 4.4 6.6 67 6.2 7.2 86 HANSEN SAWMILL 8360 4.3 4.7 91 5.5 5.9 93 MIDDLE POWDER 7760 4.5 8.2 55 5.4 9.0 60 POWDER RIVER PASS 9480 8.3 8.0 104 8.8 9.3 95 SUCKER CREEK 8880 7.6 8.2 93 8.9 9.8 91 TIE CREEK 6870 .5 4.6 11 5.5 7.4 74 ----- ----- Basin wide percent of average 79 85 BELLE FOURCHE BLIND PARK 6890 3.5 6.1 57 5.7 8.7 66 COLE CANYON 5910 1.9 4.6 41 4.7 -M * NORTH RAPID CREEK 6130 2.3 6.0 38 4.4 7.0 63 ----- ----- Basin wide percent of average 46 64 UPPER N. PLATTE RIVER COLUMBINE 9160 14.2 19.7 72 15.5 19.1 81 DIVIDE PEAK 8860 16.9 14.3 118 19.4 15.6 124 ELK RIVER 8700 16.6 14.5 114 16.8 14.6 115 JOE WRIGHT 10120 13.9 15.8 88 14.1 18.5 76 NORTH FRENCH CREEK 10130 18.6 20.6 90 18.1 18.6 97 OLD BATTLE 9920 27.6 23.5 117 29.3 25.9 113 SAGE CREEK BASIN 7850 12.0 8.3 145 13.9 9.0 154 SOUTH BRUSH CREEK 8440 7.9 8.8 90 9.6 12.3 78 TOWER 10500 27.9 34.3 81 27.2 29.1 93 WEBBER SPRINGS 9250 19.4 18.8 103 22.2 20.3 109 WILLOW CREEK PASS 9540 11.3 8.7 130 10.1 9.5 106 ----- ----- Basin wide percent of average 99 102 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 13.0 17.4 75 12.8 16.1 80 CASPER MTN. 7850 7.8 10.3 76 8.9 10.2 87 DEADMAN HILL 10220 11.9 11.9 100 9.8 12.1 81 DEER PARK 9700 18.9 13.8 137 21.0 16.4 128 LAPRELE CREEK 8375 5.0 8.1 62 6.9 9.2 75 RENO HILL 8500 6.4 9.5 67 6.9 10.6 65 ROACH 9700 11.6 12.7 91 14.3 13.5 106 SAND LAKE 10050 17.1 22.6 76 15.6 17.8 88 SOUTH PASS 9040 16.5 12.7 130 17.2 13.8 125 WINDY PEAK 7900 4.4 5.4 81 6.1 7.9 77 ----- ----- Basin wide percent of average 91 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.9 8.8 112 11.7 11.3 104 DIVIDE PEAK 8860 16.9 14.3 118 19.4 15.6 124 OLD BATTLE 9920 27.6 23.5 117 29.3 25.9 113 SANDSTONE RS 8150 9.5 11.3 84 15.5 14.3 108 WHISKEY PARK 8950 19.5 21.5 91 21.2 21.7 98 ----- ----- Basin wide percent of average 105 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.5 11.0 114 12.1 10.3 117 BLIND BULL SUM 8900 14.6 21.0 70 12.8 17.5 73 EAST RIM DIVIDE 7930 6.4 9.9 65 7.4 9.3 80 ELKHART PARK G.S. 9400 8.6 10.1 85 9.8 10.0 98 GROS VENTRE SUMMIT 8750 8.6 10.6 81 8.6 9.9 87 KENDALL R.S. 7740 8.7 11.2 78 9.8 11.3 87 LOOMIS PARK 8240 10.3 13.0 79 11.0 13.5 81 NEW FORK LAKE 8340 7.5 8.7 86 7.0 8.9 79 SNIDER BASIN 8060 10.9 11.3 96 11.5 12.6 91 SPRING CREEK DIVIDE 9000 18.1 20.1 90 17.6 20.7 85 TRIPLE PEAK 8500 14.0 18.9 74 -M 18.8 * ----- ----- Basin wide percent of average 82 87 LOWER GREEN RIVER HAMS FORK 7840 9.5 9.8 97 10.5 9.5 111 HEWINTA 9500 7.5 8.0 94 10.0 10.6 94 HICKERSON PARK 9100 6.4 5.2 123 8.8 5.8 152 HOLE-IN-ROCK 9150 5.5 5.0 110 8.1 5.4 150 INDIAN CREEK 9425 21.3 20.1 106 18.8 19.3 97 KELLEY R.S. 8180 12.9 12.5 103 14.7 15.8 93 STEEL CREEK PARK 10100 12.0 11.2 107 12.5 11.7 107 ----- ----- Basin wide percent of average 105 107 UPPER BEAR RIVER BUG LAKE 7950 16.7 15.4 108 18.7 14.8 126 HAYDEN FORK 9100 14.8 11.7 126 19.9 15.6 128 KELLEY R.S. 8180 12.9 12.5 103 14.7 15.8 93 LILY LAKE 9050 12.6 9.7 130 14.7 13.1 112 MONTE CRISTO 8960 23.5 21.9 107 23.6 19.2 123 SALT RIVER SUMMIT 7600 9.4 11.0 85 12.6 14.4 88 TRIAL LAKE 9960 24.1 18.4 131 25.1 18.5 136 ----- ----- Basin wide percent of average 113 116 ----------------------------------------------------------------------------- -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.