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 SATURDAY: MARCH 25 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.8 17.3 103 19.0 22.2 86 COTTONWOOD CREEK 7600 22.7 23.3 97 22.2 24.9 89 GRANITE CREEK 6770 15.5 18.1 86 16.9 23.3 73 GRASSY LAKE 7265 31.7 34.9 91 29.8 36.8 81 GROS VENTRE SUMMIT 8775 11.0 15.2 72 9.6 15.8 61 LEWIS LAKE DIVIDE 7860 26.0 34.5 75 27.1 37.4 72 PHILLIPS BENCH 8200 22.9 28.4 81 22.1 29.6 75 SALT RIVER SUMMIT 7600 13.2 14.0 94 13.7 16.8 82 SNAKE RIVER STATION 6920 17.2 18.3 94 19.5 25.8 76 SPRING CREEK DIVIDE 9000 22.3 27.3 82 21.4 27.2 79 THUMB DIVIDE 7980 -M 16.6 * -M 20.7 * TOGWOTEE PASS 9580 20.7 24.3 85 21.4 28.0 76 TWO OCEAN PLATEAU 9360 24.5 25.9 95 21.7 30.6 71 WILLOW CREEK 8450 29.4 29.6 99 28.4 31.9 89 ----- ----- Basin wide percent of average 88 78 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.6 23.0 90 18.9 17.5 108 BLACK BEAR 7950 -M 37.1 * -M 39.6 * CANYON 7940 13.3 12.6 106 14.2 13.9 102 FISHER CREEK 9100 31.1 34.9 89 29.4 35.7 82 MADISON PLATEAU 7750 19.2 23.9 80 21.2 25.6 83 NORTHEAST ENTRANCE 7350 10.6 9.0 118 12.2 11.5 106 PARKER PEAK 9400 17.8 21.1 84 -M 15.1 * SYLVAN LAKE 8420 19.3 21.5 90 20.8 18.6 112 THUMB DIVIDE 7980 -M 16.6 * -M 20.7 * TWO OCEAN PLATEAU 9360 24.5 25.9 95 21.7 30.6 71 WHISKEY CREEK 6800 14.4 16.9 85 16.2 21.3 76 WHITE MILL 8700 23.6 24.4 97 20.6 27.6 75 WOLVERINE 7650 11.8 11.4 104 11.0 12.4 89 ----- ----- Basin wide percent of average 92 87 WIND RIVER BURROUGHS CREEK 8750 12.4 14.7 84 13.0 16.1 81 COLD SPRINGS 9630 6.6 8.1 81 8.0 10.1 79 DEER PARK 9700 14.2 -M * 16.4 -M * HOBBS PARK 10100 10.8 14.4 75 9.3 13.5 69 LITTLE WARM 9620 10.3 11.1 93 11.4 12.7 90 SOUTH PASS 9040 14.4 15.9 91 14.1 16.4 86 ST. LAWRENCE ALT 8620 4.6 7.4 62 5.7 9.7 59 TOGWOTEE PASS 9580 20.7 24.3 85 21.4 28.0 76 TOWNSEND CREEK 8700 6.5 9.5 68 7.3 11.9 61 ----- ----- Basin wide percent of average 82 76 BIGHORN BASIN BALD MTN. 9375 18.6 19.8 94 17.3 16.7 104 BEAR TRAP MEADOW 7900 5.9 6.9 86 5.5 7.8 71 BLACKWATER 9780 17.4 21.5 81 16.5 17.4 95 BONE SPRINGS DIV 9350 14.3 15.8 91 14.2 14.3 99 EVENING STAR 9200 23.6 26.2 90 24.4 21.9 111 GRAVE SPRINGS 8550 7.4 9.1 81 7.2 9.1 79 KIRWIN 9550 8.4 9.6 88 10.1 10.3 98 MARQUETTE 8760 6.2 7.8 79 6.3 9.0 70 MIDDLE POWDER 7760 10.5 11.7 90 7.5 11.2 67 OWL CREEK 8975 4.3 4.4 98 4.5 5.9 76 POWDER RIVER PASS 9480 8.9 10.5 85 10.6 11.0 96 SHELL CREEK 9580 14.2 14.5 98 12.7 12.5 102 SYLVAN LAKE 8420 19.3 21.5 90 20.8 18.6 112 SYLVAN ROAD 8120 13.2 12.4 106 15.2 15.6 97 TIMBER CREEK 7950 2.7 6.0 45 4.3 6.6 65 YOUNTS PEAK 8350 14.7 16.8 87 12.7 16.1 79 ----- ----- Basin wide percent of average 88 93 SHOSHONE RIVER BLACKWATER 9780 17.4 21.5 81 16.5 17.4 95 EVENING STAR 9200 23.6 26.2 90 24.4 21.9 111 KIRWIN 9550 8.4 9.6 88 10.1 10.3 98 MARQUETTE 8760 6.2 7.8 79 6.3 9.0 70 SYLVAN LAKE 8420 19.3 21.5 90 20.8 18.6 112 SYLVAN ROAD 8120 13.2 12.4 106 15.2 15.6 97 YOUNTS PEAK 8350 14.7 16.8 87 12.7 16.1 79 ----- ----- Basin wide percent of average 89 97 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.9 6.9 86 5.5 7.8 71 BIG GOOSE 7990 7.6 -M * 8.7 -M * BONE SPRINGS DIV 9350 14.3 15.8 91 14.2 14.3 99 BURGESS JUNCTION 7880 10.7 11.3 95 10.9 10.8 101 CLOUD PEAK RESERVOIR 9860 13.7 14.1 97 11.7 12.6 93 DOME LAKE 8880 10.7 13.3 80 11.9 12.6 94 GRAVE SPRINGS 8550 7.4 9.1 81 7.2 9.1 79 HANSEN SAWMILL 8760 5.9 6.9 86 6.6 7.5 88 MIDDLE POWDER 7760 10.5 11.7 90 7.5 11.2 67 POWDER RIVER PASS 9480 8.9 10.5 85 10.6 11.0 96 SUCKER CREEK 8880 11.4 11.7 97 13.7 12.5 110 TIE CREEK 6870 6.4 -M * 8.8 10.4 85 ----- ----- Basin wide percent of average 89 91 BELLE FOURCHE BLIND PARK 6890 6.7 10.7 63 7.1 9.5 75 NORTH RAPID CREEK 6130 6.6 -M * 6.0 -M * WARREN PEAK 6520 11.3 10.7 106 7.8 7.6 103 ----- ----- Basin wide percent of average 84 87 UPPER N. PLATTE RIVER COLUMBINE 9400 29.4 24.3 121 25.1 23.6 106 DIVIDE PEAK 8800 16.1 20.2 80 16.8 21.9 77 ELK RIVER 8700 19.2 19.3 99 16.7 18.4 91 JOE WRIGHT 10120 21.3 21.1 101 24.1 23.9 101 NORTH FRENCH CREEK 10100 24.9 24.5 102 22.2 22.5 99 OLD BATTLE 10000 25.3 30.8 82 28.6 28.9 99 SOUTH BRUSH CREEK 8400 10.4 12.5 83 11.1 15.5 72 TOWER 10500 44.4 43.7 102 39.0 34.8 112 WEBBER SPRINGS 9200 20.1 26.9 75 20.9 24.2 86 WILLOW CREEK PASS 9540 13.8 11.4 121 13.9 12.0 116 ----- ----- Basin wide percent of average 96 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.7 24.8 71 17.3 18.5 94 CASPER MTN. 7900 15.5 15.5 100 11.3 13.3 85 DEADMAN HILL 10220 12.5 15.9 79 14.1 15.9 89 DEER PARK 9700 14.2 -M * 16.4 -M * LAPRELE CREEK 8320 10.3 10.1 102 10.9 11.2 97 RENO HILL 8400 12.7 13.5 94 11.8 18.2 65 ROACH 9700 15.0 16.7 90 16.7 20.2 83 SAND LAKE 10080 22.6 31.7 71 19.2 19.4 99 SOUTH PASS 9040 14.4 15.9 91 14.1 16.4 86 WINDY PEAK 7840 7.9 8.3 95 9.7 9.0 108 ----- ----- Basin wide percent of average 84 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.2 11.1 110 12.2 14.7 83 DIVIDE PEAK 8800 16.1 20.2 80 16.8 21.9 77 OLD BATTLE 10000 25.3 30.8 82 28.6 28.9 99 SANDSTONE RS 8150 14.6 14.4 101 15.9 17.9 89 WHISKEY PARK 8950 23.9 27.9 86 25.7 26.9 96 ----- ----- Basin wide percent of average 88 90 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.2 14.2 79 10.1 16.1 63 BLIND BULL SUM 8650 24.5 28.7 85 17.3 23.8 73 EAST RIM DIVIDE 7930 11.4 13.7 83 10.6 15.1 70 ELKHART PARK G.S. 9400 11.9 13.4 89 11.6 15.8 73 GROS VENTRE SUMMIT 8775 11.0 15.2 72 9.6 15.8 61 KENDALL R.S. 7740 14.5 14.6 99 13.4 15.4 87 LOOMIS PARK 8240 17.2 17.1 101 16.6 18.7 89 NEW FORK LAKE 8340 10.7 11.1 96 9.5 14.4 66 SNIDER BASIN 8250 12.1 14.5 83 11.3 15.1 75 SPRING CREEK DIVIDE 9000 22.3 27.3 82 21.4 27.2 79 TRIPLE PEAK 8500 22.6 25.0 90 22.9 30.8 74 ----- ----- Basin wide percent of average 87 74 LOWER GREEN RIVER HAMS FORK 7840 12.3 12.1 102 8.6 13.3 65 HEWINTA 9500 12.4 10.9 114 11.6 12.4 94 HICKERSON PARK 9150 7.3 6.4 114 7.3 9.0 81 HOLE-IN-ROCK 9150 6.9 6.1 113 7.5 9.0 83 INDIAN CREEK 9425 22.1 27.8 79 18.2 25.7 71 KELLEY R.S. 8180 13.9 16.7 83 14.2 18.7 76 STEEL CREEK PARK 10100 12.9 15.7 82 13.0 12.2 107 ----- ----- Basin wide percent of average 92 80 UPPER BEAR RIVER BUG LAKE 7950 14.9 20.3 73 12.6 18.8 67 HAYDEN FORK 9400 14.6 16.0 91 16.7 18.2 92 KELLEY R.S. 8180 13.9 16.7 83 14.2 18.7 76 LILY LAKE 9050 10.5 12.7 83 12.8 14.1 91 MONTE CRISTO 8960 20.8 28.5 73 18.4 24.6 75 SALT RIVER SUMMIT 7600 13.2 14.0 94 13.7 16.8 82 TRIAL LAKE 9960 21.5 24.5 88 20.9 23.0 91 ----- ----- Basin wide percent of average 82 81 ----------------------------------------------------------------------------- -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.