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 TUESDAY: APRIL 8 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 17.8 * -M 22.3 * COTTONWOOD CREEK 7670 26.6 24.4 109 26.4 28.8 92 GRAND TARGHEE 9260 50.4 -M * 35.0 -M * GRANITE CREEK 6770 19.5 18.1 108 24.4 20.6 118 GRASSY LAKE 7265 38.5 37.0 104 44.4 37.5 118 GROS VENTRE SUMMIT 8750 13.6 14.6 93 14.9 13.5 110 GUNSIGHT PASS 9820 12.9 -M * 15.1 -M * LEWIS LAKE DIVIDE 7850 37.5 36.5 103 -M 38.3 * PHILLIPS BENCH 8200 35.4 30.1 118 36.7 30.3 121 SALT RIVER SUMMIT 7760 14.5 14.9 97 16.8 19.7 85 SNAKE RIVER STATION 6920 21.5 18.7 115 28.9 23.3 124 SPRING CREEK DIVIDE 9000 23.6 27.8 85 25.2 27.6 91 THUMB DIVIDE 7980 20.2 19.3 105 21.8 19.8 110 TOGWOTEE PASS 9580 28.6 26.0 110 30.8 25.8 119 TWO OCEAN PLATEAU 9240 -M 29.6 * -M 29.0 * WILLOW CREEK 8380 35.0 31.4 111 40.0 33.7 119 ----- ----- Basin wide percent of average 105 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.6 24.5 109 25.3 21.0 120 BLACK BEAR 8170 47.7 40.5 118 41.9 42.1 100 CANYON 7870 18.6 14.0 133 21.9 16.1 136 FISHER CREEK 9100 43.3 36.3 119 39.0 38.0 103 MADISON PLATEAU 7750 31.0 26.0 119 33.2 28.0 119 NORTHEAST ENTRANCE 7350 -M 11.1 * -M 13.2 * PARKER PEAK 9400 28.2 22.7 124 25.7 17.1 150 SYLVAN LAKE 8420 22.9 23.5 97 27.5 21.9 126 THUMB DIVIDE 7980 20.2 19.3 105 21.8 19.8 110 TWO OCEAN PLATEAU 9240 -M 29.6 * -M 29.0 * WHISKEY CREEK 6800 19.4 17.7 110 25.6 22.0 116 WHITE MILL 8700 29.5 25.3 117 -M 28.2 * WOLVERINE 7650 11.7 11.6 101 14.9 13.4 111 ----- ----- Basin wide percent of average 114 116 WIND RIVER BURROUGHS CREEK 8750 16.8 15.0 112 19.7 17.0 116 COLD SPRINGS 9630 7.4 8.4 88 10.5 11.3 93 DEER PARK 9700 16.1 17.4 93 20.9 23.1 90 HOBBS PARK 10100 14.6 15.9 92 14.8 13.7 108 LITTLE WARM 9370 10.9 12.3 89 14.6 14.1 104 SOUTH PASS 9040 15.0 17.3 87 17.9 19.4 92 ST. LAWRENCE ALT 8620 7.1 7.5 95 8.6 9.5 91 TOGWOTEE PASS 9580 28.6 26.0 110 30.8 25.8 119 TOWNSEND CREEK 8700 9.0 9.5 95 12.5 12.5 100 ----- ----- Basin wide percent of average 97 103 BIGHORN BASIN BALD MTN. 9380 17.4 20.8 84 15.9 18.3 87 BEAR TRAP MEADOW 8200 9.7 5.2 187 9.7 8.8 110 BLACKWATER 9780 27.5 25.7 107 24.9 21.6 115 BONE SPRINGS DIV 9350 18.2 17.1 106 18.2 15.5 117 EVENING STAR 9200 32.0 31.1 103 35.4 26.5 134 GRAVE SPRINGS 8550 10.5 10.2 103 10.8 10.5 103 KIRWIN 9550 12.7 11.9 107 15.4 11.9 129 MARQUETTE 8760 7.6 9.8 78 10.5 10.6 99 MIDDLE POWDER 7760 12.2 12.9 95 9.8 13.1 75 OWL CREEK 8975 6.0 5.7 105 7.2 6.3 114 POWDER RIVER PASS 9480 13.0 11.5 113 15.1 13.1 115 SHELL CREEK 9580 16.5 15.5 106 15.9 14.1 113 SYLVAN LAKE 8420 22.9 23.5 97 27.5 21.9 126 SYLVAN ROAD 7120 14.0 12.7 110 22.6 18.4 123 TIMBER CREEK 7950 4.6 5.8 79 8.2 7.9 104 YOUNTS PEAK 8350 18.1 17.7 102 18.6 16.9 110 ----- ----- Basin wide percent of average 102 113 SHOSHONE RIVER BLACKWATER 9780 27.5 25.7 107 24.9 21.6 115 EVENING STAR 9200 32.0 31.1 103 35.4 26.5 134 KIRWIN 9550 12.7 11.9 107 15.4 11.9 129 MARQUETTE 8760 7.6 9.8 78 10.5 10.6 99 SYLVAN LAKE 8420 22.9 23.5 97 27.5 21.9 126 SYLVAN ROAD 7120 14.0 12.7 110 22.6 18.4 123 YOUNTS PEAK 8350 18.1 17.7 102 18.6 16.9 110 ----- ----- Basin wide percent of average 102 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.7 5.2 187 9.7 8.8 110 BIG GOOSE 7990 10.0 11.7 85 12.8 9.5 135 BONE SPRINGS DIV 9350 18.2 17.1 106 18.2 15.5 117 BURGESS JUNCTION 7880 12.8 12.4 103 14.2 12.9 110 CLOUD PEAK RESERVOIR 9860 16.5 14.4 115 15.9 13.7 116 DOME LAKE 8880 12.4 13.2 94 15.6 14.0 111 GRAVE SPRINGS 8550 10.5 10.2 103 10.8 10.5 103 HANSEN SAWMILL 8360 7.6 6.5 117 9.8 8.7 113 MIDDLE POWDER 7760 12.2 12.9 95 9.8 13.1 75 POWDER RIVER PASS 9480 13.0 11.5 113 15.1 13.1 115 SUCKER CREEK 8880 15.1 12.7 119 17.1 14.4 119 TIE CREEK 6870 8.1 6.1 133 12.3 10.6 116 ----- ----- Basin wide percent of average 109 111 BELLE FOURCHE BLIND PARK 6890 8.4 8.1 104 11.3 11.7 97 COLE CANYON 5910 6.8 7.1 96 8.3 7.1 117 NORTH RAPID CREEK 6130 8.8 8.8 100 9.2 9.0 102 ----- ----- Basin wide percent of average 100 104 UPPER N. PLATTE RIVER COLUMBINE 9160 29.0 25.1 116 29.6 26.3 113 DIVIDE PEAK 8880 24.8 20.6 120 24.7 21.6 114 ELK RIVER 8700 27.9 20.1 139 24.1 20.5 118 JOE WRIGHT 10120 25.4 22.6 112 28.4 26.0 109 NORTH FRENCH CREEK 10130 33.0 31.1 106 30.8 25.8 119 OLD BATTLE 10000 35.6 33.6 106 40.3 36.0 112 SAGE CREEK BASIN 7850 18.1 11.9 152 18.4 12.5 147 SOUTH BRUSH CREEK 8440 15.4 13.4 115 17.8 17.3 103 TOWER 10500 45.7 47.8 96 33.6 40.1 84 WEBBER SPRINGS 9250 28.1 26.4 106 31.4 27.9 113 WILLOW CREEK PASS 9540 17.6 12.9 136 17.0 13.5 126 ----- ----- Basin wide percent of average 113 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.5 25.2 89 23.1 23.3 99 CASPER MTN. 7900 13.5 15.7 86 14.3 15.5 92 DEADMAN HILL 10220 18.9 17.4 109 19.5 17.8 110 DEER PARK 9700 16.1 17.4 93 20.9 23.1 90 LAPRELE CREEK 8375 8.4 10.9 77 11.4 13.4 85 RENO HILL 8400 14.0 15.2 92 16.0 16.1 99 ROACH 9700 20.3 18.0 113 22.9 19.5 117 SAND LAKE 10050 30.4 33.9 90 29.9 25.4 118 SOUTH PASS 9040 15.0 17.3 87 17.9 19.4 92 WINDY PEAK 7900 8.8 8.4 105 10.3 11.2 92 ----- ----- Basin wide percent of average 94 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.7 10.0 177 17.7 16.6 107 DIVIDE PEAK 8880 24.8 20.6 120 24.7 21.6 114 OLD BATTLE 10000 35.6 33.6 106 40.3 36.0 112 SANDSTONE RS 8150 19.1 14.3 134 22.7 19.5 116 WHISKEY PARK 8950 35.5 30.7 116 34.7 29.9 116 ----- ----- Basin wide percent of average 122 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.7 15.2 90 13.7 14.0 98 BLIND BULL SUM 8650 27.0 28.8 94 19.1 23.2 82 EAST RIM DIVIDE 7930 9.9 13.7 72 11.9 12.6 94 ELKHART PARK G.S. 9400 11.5 13.9 83 12.2 14.0 87 GROS VENTRE SUMMIT 8750 13.6 14.6 93 14.9 13.5 110 GUNSIGHT PASS 9820 12.9 -M * 15.1 -M * KENDALL R.S. 7740 13.3 14.3 93 14.7 15.1 97 LOOMIS PARK 8240 17.3 17.5 99 18.8 18.1 104 NEW FORK LAKE 8340 10.0 11.5 87 9.9 11.9 83 SNIDER BASIN 8060 14.4 15.0 96 15.2 16.9 90 SPRING CREEK DIVIDE 9000 23.6 27.8 85 25.2 27.6 91 TRIPLE PEAK 8500 27.3 25.7 106 30.3 25.9 117 ----- ----- Basin wide percent of average 92 96 LOWER GREEN RIVER HAMS FORK 7840 13.4 11.1 121 11.0 12.8 86 HEWINTA 9519 17.0 12.5 136 18.0 15.4 117 HICKERSON PARK 9145 8.3 8.3 100 10.5 8.4 125 HOLE-IN-ROCK 9150 7.4 7.5 99 11.1 8.0 139 INDIAN CREEK 9425 27.5 29.1 95 -M 26.7 * KELLEY R.S. 8180 16.1 17.4 93 18.9 21.3 89 STEEL CREEK PARK 10200 17.0 16.6 102 19.7 17.3 114 ----- ----- Basin wide percent of average 104 107 UPPER BEAR RIVER BUG LAKE 7950 18.7 21.7 86 17.5 20.1 87 HAYDEN FORK 9212 21.6 16.9 128 24.2 22.1 110 KELLEY R.S. 8180 16.1 17.4 93 18.9 21.3 89 LILY LAKE 9156 16.3 14.5 112 18.7 18.5 101 MONTE CRISTO 8960 30.6 30.5 100 27.1 26.8 101 SALT RIVER SUMMIT 7760 14.5 14.9 97 16.8 19.7 85 TRIAL LAKE 9992 23.5 26.0 90 25.7 26.2 98 ----- ----- Basin wide percent of average 100 96 ----------------------------------------------------------------------------- -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 1961-90. 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.