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: MARCH 31 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.8 18.1 115 25.0 21.6 116 COTTONWOOD CREEK 7600 29.4 24.0 122 31.2 27.6 113 GRANITE CREEK 6770 20.8 18.6 112 23.2 20.0 116 GRASSY LAKE 7265 38.1 35.9 106 41.5 36.2 115 GROS VENTRE SUMMIT 8750 12.3 14.3 86 12.7 12.9 98 LEWIS LAKE DIVIDE 7850 40.8 35.6 115 38.8 37.0 105 PHILLIPS BENCH 8200 33.9 29.0 117 33.8 29.2 116 SALT RIVER SUMMIT 7600 16.5 14.5 114 19.1 18.9 101 SNAKE RIVER STATION 6920 21.3 19.1 112 25.9 22.4 116 SPRING CREEK DIVIDE 9000 31.1 26.8 116 -M 26.7 * THUMB DIVIDE 7980 19.1 19.1 100 18.7 19.0 98 TOGWOTEE PASS 9580 24.6 25.1 98 25.6 24.8 103 TWO OCEAN PLATEAU 9240 34.7 28.2 123 28.4 27.9 102 WILLOW CREEK 8450 36.0 30.4 118 40.1 32.4 124 ----- ----- Basin wide percent of average 112 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.3 23.5 91 18.8 20.2 93 BLACK BEAR 8170 48.3 39.6 122 -M 40.7 * CANYON 8090 14.7 13.8 107 17.1 15.5 110 FISHER CREEK 9100 38.7 35.2 110 36.6 36.6 100 MADISON PLATEAU 7750 27.0 25.4 106 31.9 26.9 119 NORTHEAST ENTRANCE 7350 10.2 11.3 90 12.3 12.7 97 PARKER PEAK 9400 18.6 21.8 85 16.8 16.3 103 SYLVAN LAKE 8420 18.0 22.7 79 22.0 21.0 105 THUMB DIVIDE 7980 19.1 19.1 100 18.7 19.0 98 TWO OCEAN PLATEAU 9240 34.7 28.2 123 28.4 27.9 102 WHISKEY CREEK 6800 16.0 17.3 92 23.0 21.1 109 WHITE MILL 8700 25.4 24.5 104 23.1 27.2 85 WOLVERINE 7650 8.5 11.6 73 8.9 12.8 70 ----- ----- Basin wide percent of average 102 100 WIND RIVER BURROUGHS CREEK 8750 13.7 14.7 93 15.8 16.3 97 COLD SPRINGS 9630 5.7 8.9 64 8.5 10.6 80 DEER PARK 9700 17.2 17.0 101 20.5 22.0 93 HOBBS PARK 10100 11.0 15.0 73 11.4 12.8 89 LITTLE WARM 9370 9.1 11.9 76 11.7 13.4 87 SOUTH PASS 9040 16.3 16.6 98 16.8 18.5 91 ST. LAWRENCE ALT 8620 4.0 7.4 54 6.5 8.8 74 TOGWOTEE PASS 9580 24.6 25.1 98 25.6 24.8 103 TOWNSEND CREEK 8700 6.4 8.7 74 9.3 11.6 80 ----- ----- Basin wide percent of average 86 91 BIGHORN BASIN BALD MTN. 9380 16.2 19.8 82 13.2 17.4 76 BEAR TRAP MEADOW 8200 6.1 5.2 117 7.8 8.2 95 BLACKWATER 9780 22.0 24.7 89 19.8 20.6 96 BONE SPRINGS DIV 9350 14.1 16.3 87 14.8 14.6 101 EVENING STAR 9200 24.4 29.9 82 27.0 25.4 106 GRAVE SPRINGS 8550 9.8 9.3 105 11.6 9.6 121 KIRWIN 9550 9.6 11.4 84 10.4 11.2 93 MARQUETTE 8760 2.4 8.9 27 7.2 9.7 74 MIDDLE POWDER 7760 12.8 11.7 109 9.9 12.3 80 OWL CREEK 8975 3.3 5.5 60 5.8 5.9 98 POWDER RIVER PASS 9480 10.1 10.8 94 11.8 12.3 96 SHELL CREEK 9580 13.9 14.8 94 13.0 13.3 98 SYLVAN LAKE 8420 18.0 22.7 79 22.0 21.0 105 SYLVAN ROAD 7120 10.7 12.9 83 16.3 17.7 92 TIMBER CREEK 7950 2.6 5.7 46 5.0 7.3 68 YOUNTS PEAK 8350 14.1 17.2 82 17.1 16.2 106 ----- ----- Basin wide percent of average 84 96 SHOSHONE RIVER BLACKWATER 9780 22.0 24.7 89 19.8 20.6 96 EVENING STAR 9200 24.4 29.9 82 27.0 25.4 106 KIRWIN 9550 9.6 11.4 84 10.4 11.2 93 MARQUETTE 8760 2.4 8.9 27 7.2 9.7 74 SYLVAN LAKE 8420 18.0 22.7 79 22.0 21.0 105 SYLVAN ROAD 7120 10.7 12.9 83 16.3 17.7 92 YOUNTS PEAK 8350 14.1 17.2 82 17.1 16.2 106 ----- ----- Basin wide percent of average 79 98 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 5.2 117 7.8 8.2 95 BIG GOOSE 7990 6.7 10.6 63 8.8 8.4 105 BONE SPRINGS DIV 9350 14.1 16.3 87 14.8 14.6 101 BURGESS JUNCTION 7880 9.6 11.6 83 10.7 12.1 88 CLOUD PEAK RESERVOIR 9860 12.9 13.4 96 12.1 12.8 95 DOME LAKE 8880 10.3 12.5 82 11.0 13.1 84 GRAVE SPRINGS 8550 9.8 9.3 105 11.6 9.6 121 HANSEN SAWMILL 8360 5.1 6.5 78 7.2 8.1 89 MIDDLE POWDER 7760 12.8 11.7 109 9.9 12.3 80 POWDER RIVER PASS 9480 10.1 10.8 94 11.8 12.3 96 SUCKER CREEK 8880 10.3 11.7 88 13.4 13.5 99 TIE CREEK 6870 5.0 6.1 82 9.8 9.8 100 ----- ----- Basin wide percent of average 90 96 BELLE FOURCHE BLIND PARK 6890 7.8 8.7 90 10.7 11.0 97 COLE CANYON 5910 5.2 6.2 84 9.1 -M * NORTH RAPID CREEK 6130 6.8 8.3 82 8.8 8.6 102 ----- ----- Basin wide percent of average 85 99 UPPER N. PLATTE RIVER COLUMBINE 9160 30.6 24.9 123 33.0 25.2 131 DIVIDE PEAK 8860 19.5 19.9 98 21.9 20.7 106 ELK RIVER 8700 20.8 19.5 107 21.0 19.6 107 JOE WRIGHT 10120 21.9 21.4 102 25.7 24.7 104 NORTH FRENCH CREEK 10130 33.6 29.3 115 32.2 24.7 130 OLD BATTLE 9920 37.5 32.2 116 40.9 34.6 118 SAGE CREEK BASIN 7850 13.3 11.5 116 14.4 12.0 120 SOUTH BRUSH CREEK 8440 12.9 13.1 98 16.8 16.3 103 TOWER 10500 50.9 45.5 112 46.7 38.4 122 WEBBER SPRINGS 9250 28.5 26.3 108 34.1 26.6 128 WILLOW CREEK PASS 9540 12.1 12.0 101 13.5 12.8 105 ----- ----- Basin wide percent of average 110 117 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 25.6 23.7 108 22.0 22.0 100 CASPER MTN. 7850 16.1 14.5 111 16.3 14.3 114 DEADMAN HILL 10220 16.5 16.3 101 17.9 16.9 106 DEER PARK 9700 17.2 17.0 101 20.5 22.0 93 LAPRELE CREEK 8375 10.1 10.9 93 11.5 12.5 92 RENO HILL 8500 15.2 14.2 107 16.8 14.9 113 ROACH 9700 16.6 17.1 97 19.5 18.6 105 SAND LAKE 10050 32.2 32.5 99 31.0 24.0 129 SOUTH PASS 9040 16.3 16.6 98 16.8 18.5 91 WINDY PEAK 7900 7.8 8.0 98 10.1 10.5 96 ----- ----- Basin wide percent of average 102 105 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.5 11.0 123 16.4 15.8 104 DIVIDE PEAK 8860 19.5 19.9 98 21.9 20.7 106 OLD BATTLE 9920 37.5 32.2 116 40.9 34.6 118 SANDSTONE RS 8150 16.3 14.8 110 21.3 18.7 114 WHISKEY PARK 8950 40.8 30.2 135 33.9 28.6 119 ----- ----- Basin wide percent of average 118 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.4 14.6 105 15.5 13.4 116 BLIND BULL SUM 8900 28.4 28.1 101 21.5 22.4 96 EAST RIM DIVIDE 7930 11.1 13.2 84 11.5 12.1 95 ELKHART PARK G.S. 9400 14.2 13.5 105 14.9 13.3 112 GROS VENTRE SUMMIT 8750 12.3 14.3 86 12.7 12.9 98 KENDALL R.S. 7740 14.9 14.6 102 15.0 14.6 103 LOOMIS PARK 8240 19.9 17.4 114 19.6 17.5 112 NEW FORK LAKE 8340 10.9 11.3 96 10.4 11.3 92 SNIDER BASIN 8060 18.7 14.6 128 17.3 16.2 107 SPRING CREEK DIVIDE 9000 31.1 26.8 116 -M 26.7 * TRIPLE PEAK 8500 31.0 25.1 124 31.1 25.0 124 ----- ----- Basin wide percent of average 107 107 LOWER GREEN RIVER HAMS FORK 7840 16.0 12.0 133 14.1 12.2 116 HEWINTA 9500 13.1 12.0 109 15.0 14.6 103 HICKERSON PARK 9100 6.0 7.6 79 8.1 7.9 103 HOLE-IN-ROCK 9150 7.8 7.2 108 8.5 7.4 115 INDIAN CREEK 9425 31.6 28.0 113 -M 25.6 * KELLEY R.S. 8180 20.4 17.0 120 22.2 20.5 108 STEEL CREEK PARK 10100 16.0 15.8 101 17.3 16.2 107 ----- ----- Basin wide percent of average 111 108 UPPER BEAR RIVER BUG LAKE 7950 25.6 21.1 121 22.7 19.4 117 HAYDEN FORK 9100 -M 16.5 * -M 21.1 * KELLEY R.S. 8180 20.4 17.0 120 22.2 20.5 108 LILY LAKE 9050 15.5 13.4 116 16.6 17.5 95 MONTE CRISTO 8960 36.1 30.0 120 32.1 25.6 125 SALT RIVER SUMMIT 7600 16.5 14.5 114 19.1 18.9 101 TRIAL LAKE 9960 30.4 25.2 121 28.4 25.0 114 ----- ----- Basin wide percent of average 119 111 ----------------------------------------------------------------------------- -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.