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 WEDNESDAY: FEBRUARY 22 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.6 15.2 116 21.9 17.7 124 COTTONWOOD CREEK 7600 23.8 17.2 138 25.8 21.9 118 GRANITE CREEK 6770 18.0 15.2 118 20.1 16.5 122 GRASSY LAKE 7265 30.8 27.9 110 34.0 29.5 115 GROS VENTRE SUMMIT 8750 9.8 10.9 90 10.6 10.3 103 LEWIS LAKE DIVIDE 7850 33.6 28.0 120 33.0 29.9 110 PHILLIPS BENCH 8200 26.1 22.5 116 27.3 23.3 117 SALT RIVER SUMMIT 7600 13.2 11.5 115 16.0 15.0 107 SNAKE RIVER STATION 6920 17.1 15.6 110 21.8 18.5 118 SPRING CREEK DIVIDE 9000 26.4 20.9 126 -M 21.4 * THUMB DIVIDE 7980 14.2 14.4 99 15.1 15.2 99 TOGWOTEE PASS 9580 20.3 19.8 103 21.2 19.7 108 TWO OCEAN PLATEAU 9240 29.5 22.2 133 23.5 22.2 106 WILLOW CREEK 8450 28.4 24.0 118 32.5 25.7 126 ----- ----- Basin wide percent of average 116 114 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.8 18.9 94 15.7 16.3 96 BLACK BEAR 8170 40.3 31.0 130 -M 31.5 * CANYON 8090 11.9 10.7 111 14.4 12.4 116 FISHER CREEK 9100 32.7 28.1 116 -M 29.1 * MADISON PLATEAU 7750 21.5 19.7 109 24.9 21.0 119 NORTHEAST ENTRANCE 7350 8.4 9.2 91 10.4 10.3 101 PARKER PEAK 9400 15.2 17.3 88 14.0 13.0 108 SYLVAN LAKE 8420 14.2 17.8 80 17.9 17.1 105 THUMB DIVIDE 7980 14.2 14.4 99 15.1 15.2 99 TWO OCEAN PLATEAU 9240 29.5 22.2 133 23.5 22.2 106 WHISKEY CREEK 6800 12.7 13.6 93 18.8 16.5 114 WHITE MILL 8700 20.8 19.2 108 18.3 21.6 85 WOLVERINE 7650 8.8 10.1 87 7.9 10.7 74 ----- ----- Basin wide percent of average 107 103 WIND RIVER BURROUGHS CREEK 8750 11.6 11.9 97 13.6 13.1 104 COLD SPRINGS 9630 4.0 6.8 59 6.6 8.1 81 DEER PARK 9700 13.6 14.1 96 16.7 17.0 98 HOBBS PARK 10100 8.1 11.3 72 8.6 9.5 91 LITTLE WARM 9370 7.0 9.0 78 9.1 10.4 87 SOUTH PASS 9040 13.2 13.2 100 14.2 14.3 99 ST. LAWRENCE ALT 8620 2.3 5.6 41 4.9 6.7 73 TOGWOTEE PASS 9580 20.3 19.8 103 21.2 19.7 108 TOWNSEND CREEK 8700 4.8 6.6 73 7.8 8.5 92 ----- ----- Basin wide percent of average 86 96 BIGHORN BASIN BALD MTN. 9380 12.1 15.2 80 9.4 13.5 70 BEAR TRAP MEADOW 8200 4.5 4.1 110 6.3 6.2 102 BLACKWATER 9780 17.9 19.4 92 16.2 16.4 99 BONE SPRINGS DIV 9350 -M 12.4 * -M 11.1 * EVENING STAR 9200 20.4 23.6 86 22.8 20.8 110 GRAVE SPRINGS 8550 7.6 6.9 110 9.7 7.5 129 KIRWIN 9550 8.0 8.7 92 8.7 8.8 99 MARQUETTE 8760 1.9 6.6 29 6.1 7.2 85 MIDDLE POWDER 7760 10.3 8.6 120 8.8 9.3 95 OWL CREEK 8975 2.3 3.9 59 4.3 4.2 102 POWDER RIVER PASS 9480 7.8 8.3 94 9.0 9.6 94 SHELL CREEK 9580 10.5 11.2 94 9.8 10.4 94 SYLVAN LAKE 8420 14.2 17.8 80 17.9 17.1 105 SYLVAN ROAD 7120 8.8 10.8 81 13.7 15.0 91 TIMBER CREEK 7950 1.6 4.0 40 4.1 5.2 79 YOUNTS PEAK 8350 -M 13.9 * 14.2 13.1 108 ----- ----- Basin wide percent of average 86 98 SHOSHONE RIVER BLACKWATER 9780 17.9 19.4 92 16.2 16.4 99 EVENING STAR 9200 20.4 23.6 86 22.8 20.8 110 KIRWIN 9550 8.0 8.7 92 8.7 8.8 99 MARQUETTE 8760 1.9 6.6 29 6.1 7.2 85 SYLVAN LAKE 8420 14.2 17.8 80 17.9 17.1 105 SYLVAN ROAD 7120 8.8 10.8 81 13.7 15.0 91 YOUNTS PEAK 8350 -M 13.9 * 14.2 13.1 108 ----- ----- Basin wide percent of average 82 101 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.5 4.1 110 6.3 6.2 102 BIG GOOSE 7990 4.8 7.2 67 6.9 6.5 106 BONE SPRINGS DIV 9350 -M 12.4 * -M 11.1 * BURGESS JUNCTION 7880 7.5 8.6 87 8.9 9.1 98 CLOUD PEAK RESERVOIR 9860 10.0 9.4 106 9.2 9.4 98 DOME LAKE 8880 7.8 9.1 86 8.6 9.8 88 GRAVE SPRINGS 8550 7.6 6.9 110 9.7 7.5 129 HANSEN SAWMILL 8360 2.9 4.9 59 4.9 6.0 82 MIDDLE POWDER 7760 10.3 8.6 120 8.8 9.3 95 POWDER RIVER PASS 9480 7.8 8.3 94 9.0 9.6 94 SUCKER CREEK 8880 8.0 8.6 93 10.6 10.1 105 TIE CREEK 6870 4.2 4.7 89 8.1 7.6 107 ----- ----- Basin wide percent of average 94 100 BELLE FOURCHE BLIND PARK 6890 6.4 6.5 98 9.0 8.9 101 COLE CANYON 5910 4.1 4.8 85 7.3 -M * NORTH RAPID CREEK 6130 5.6 6.3 89 6.9 7.2 96 ----- ----- Basin wide percent of average 91 99 UPPER N. PLATTE RIVER COLUMBINE 9160 26.7 20.6 130 28.0 19.8 141 DIVIDE PEAK 8860 14.5 14.8 98 17.2 16.2 106 ELK RIVER 8700 16.4 15.2 108 17.0 15.2 112 JOE WRIGHT 10120 18.0 16.4 110 21.8 19.2 114 NORTH FRENCH CREEK 10130 28.0 21.5 130 26.6 19.2 139 OLD BATTLE 9920 30.5 24.6 124 33.4 27.0 124 SAGE CREEK BASIN 7850 10.2 8.6 119 12.1 9.4 129 SOUTH BRUSH CREEK 8440 9.9 9.3 106 13.9 12.7 109 TOWER 10500 44.0 35.7 123 31.0 30.3 102 WEBBER SPRINGS 9250 21.9 19.9 110 27.5 21.1 130 WILLOW CREEK PASS 9540 10.5 9.1 115 11.1 9.9 112 ----- ----- Basin wide percent of average 118 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 20.2 18.1 112 16.8 16.7 101 CASPER MTN. 7850 13.6 10.7 127 14.7 10.6 139 DEADMAN HILL 10220 12.7 12.3 103 14.1 12.6 112 DEER PARK 9700 13.6 14.1 96 16.7 17.0 98 LAPRELE CREEK 8375 8.3 8.4 99 9.0 9.5 95 RENO HILL 8500 12.9 9.9 130 14.3 10.9 131 ROACH 9700 12.1 13.2 92 14.9 14.1 106 SAND LAKE 10050 26.2 23.7 111 24.9 18.4 135 SOUTH PASS 9040 13.2 13.2 100 14.2 14.3 99 WINDY PEAK 7900 5.6 5.7 98 7.7 8.1 95 ----- ----- Basin wide percent of average 107 111 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.9 9.2 118 13.4 11.7 115 DIVIDE PEAK 8860 14.5 14.8 98 17.2 16.2 106 OLD BATTLE 9920 30.5 24.6 124 33.4 27.0 124 SANDSTONE RS 8150 12.4 11.8 105 18.0 14.9 121 WHISKEY PARK 8950 30.9 22.5 137 29.5 22.4 132 ----- ----- Basin wide percent of average 120 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.3 11.4 108 12.5 10.7 117 BLIND BULL SUM 8900 23.3 21.9 106 18.0 18.2 99 EAST RIM DIVIDE 7930 9.3 10.3 90 9.8 9.7 101 ELKHART PARK G.S. 9400 11.3 10.5 108 12.1 10.4 116 GROS VENTRE SUMMIT 8750 9.8 10.9 90 10.6 10.3 103 KENDALL R.S. 7740 11.9 11.7 102 12.9 11.8 109 LOOMIS PARK 8240 15.5 13.6 114 16.3 14.1 116 NEW FORK LAKE 8340 9.0 9.1 99 8.8 9.2 96 SNIDER BASIN 8060 15.0 11.8 127 14.4 13.0 111 SPRING CREEK DIVIDE 9000 26.4 20.9 126 -M 21.4 * TRIPLE PEAK 8500 25.2 19.8 127 25.8 19.6 132 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 12.6 10.3 122 11.9 9.9 120 HEWINTA 9500 9.2 8.4 110 12.3 11.0 112 HICKERSON PARK 9100 3.1 5.4 57 5.4 6.0 90 HOLE-IN-ROCK 9150 5.5 5.3 104 6.3 5.5 115 INDIAN CREEK 9425 25.7 21.0 122 -M 20.0 * KELLEY R.S. 8180 16.8 13.1 128 18.6 16.4 113 STEEL CREEK PARK 10100 12.5 11.8 106 13.8 12.2 113 ----- ----- Basin wide percent of average 113 112 UPPER BEAR RIVER BUG LAKE 7950 20.5 16.1 127 18.0 15.4 117 HAYDEN FORK 9100 16.6 12.3 135 19.7 16.2 122 KELLEY R.S. 8180 16.8 13.1 128 18.6 16.4 113 LILY LAKE 9050 11.4 10.2 112 13.3 13.6 98 MONTE CRISTO 8960 25.9 23.0 113 25.3 20.0 127 SALT RIVER SUMMIT 7600 13.2 11.5 115 16.0 15.0 107 TRIAL LAKE 9960 23.6 19.3 122 22.9 19.3 119 ----- ----- Basin wide percent of average 121 115 ----------------------------------------------------------------------------- -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.