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 MONDAY: MARCH 20 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.7 17.0 104 18.8 21.8 86 COTTONWOOD CREEK 7600 22.5 22.5 100 21.9 24.4 90 GRANITE CREEK 6770 15.4 17.6 88 16.8 22.9 73 GRASSY LAKE 7265 31.4 34.0 92 29.6 35.9 82 GROS VENTRE SUMMIT 8775 10.8 14.8 73 9.5 15.5 61 LEWIS LAKE DIVIDE 7860 25.7 33.7 76 26.8 36.5 73 PHILLIPS BENCH 8200 22.8 27.7 82 21.9 28.9 76 SALT RIVER SUMMIT 7600 13.2 13.7 96 13.6 16.4 83 SNAKE RIVER STATION 6920 17.1 18.0 95 19.3 25.2 77 SPRING CREEK DIVIDE 9000 22.2 26.5 84 21.2 26.6 80 THUMB DIVIDE 7980 -M 16.2 * -M 20.3 * TOGWOTEE PASS 9580 20.5 23.6 87 21.3 27.3 78 TWO OCEAN PLATEAU 9360 24.4 25.3 96 21.5 30.0 72 WILLOW CREEK 8450 28.8 29.0 99 27.9 31.2 89 ----- ----- Basin wide percent of average 90 79 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.4 22.4 91 18.5 17.0 109 BLACK BEAR 7950 34.8 36.2 96 -M 38.4 * CANYON 7940 13.1 12.3 107 13.9 13.5 103 FISHER CREEK 9100 30.6 34.0 90 28.7 34.6 83 MADISON PLATEAU 7750 18.6 23.3 80 20.6 24.8 83 NORTHEAST ENTRANCE 7350 10.7 8.9 120 12.1 11.2 108 PARKER PEAK 9400 17.7 20.5 86 -M 14.7 * SYLVAN LAKE 8420 19.0 21.0 90 20.6 18.1 114 THUMB DIVIDE 7980 -M 16.2 * -M 20.3 * TWO OCEAN PLATEAU 9360 24.4 25.3 96 21.5 30.0 72 WHISKEY CREEK 6800 14.1 16.4 86 15.8 20.6 77 WHITE MILL 8700 23.4 24.0 98 20.0 26.8 75 WOLVERINE 7650 11.5 11.2 103 10.6 12.1 88 ----- ----- Basin wide percent of average 93 87 WIND RIVER BURROUGHS CREEK 8750 12.4 14.4 86 13.0 15.7 83 COLD SPRINGS 9630 6.3 7.9 80 7.6 9.7 78 DEER PARK 9700 13.5 -M * 15.7 -M * HOBBS PARK 10100 10.0 14.0 71 8.4 13.0 65 LITTLE WARM 9620 10.3 10.8 95 11.2 12.3 91 SOUTH PASS 9040 13.7 15.6 88 13.1 15.8 83 ST. LAWRENCE ALT 8620 4.0 7.2 56 5.1 9.3 55 TOGWOTEE PASS 9580 20.5 23.6 87 21.3 27.3 78 TOWNSEND CREEK 8700 5.8 9.3 62 6.6 11.5 57 ----- ----- Basin wide percent of average 81 75 BIGHORN BASIN BALD MTN. 9375 18.4 19.3 95 16.9 16.1 105 BEAR TRAP MEADOW 7900 5.7 6.7 85 5.3 7.5 71 BLACKWATER 9780 17.1 20.8 82 16.2 17.0 95 BONE SPRINGS DIV 9350 13.9 15.4 90 13.0 13.8 94 EVENING STAR 9200 23.6 25.5 93 24.1 21.3 113 GRAVE SPRINGS 8550 7.2 8.8 82 7.0 8.7 80 KIRWIN 9550 8.1 9.3 87 9.7 9.9 98 MARQUETTE 8760 5.8 7.5 77 5.7 8.6 66 MIDDLE POWDER 7760 10.1 11.3 89 7.3 10.8 68 OWL CREEK 8975 4.2 4.2 100 4.4 5.7 77 POWDER RIVER PASS 9480 8.8 10.2 86 10.4 10.7 97 SHELL CREEK 9580 13.7 14.2 96 12.1 12.1 100 SYLVAN LAKE 8420 19.0 21.0 90 20.6 18.1 114 SYLVAN ROAD 8120 13.0 12.4 105 15.1 15.2 99 TIMBER CREEK 7950 2.6 5.8 45 4.2 6.3 67 YOUNTS PEAK 8350 14.7 16.4 90 12.6 15.6 81 ----- ----- Basin wide percent of average 89 94 SHOSHONE RIVER BLACKWATER 9780 17.1 20.8 82 16.2 17.0 95 EVENING STAR 9200 23.6 25.5 93 24.1 21.3 113 KIRWIN 9550 8.1 9.3 87 9.7 9.9 98 MARQUETTE 8760 5.8 7.5 77 5.7 8.6 66 SYLVAN LAKE 8420 19.0 21.0 90 20.6 18.1 114 SYLVAN ROAD 8120 13.0 12.4 105 15.1 15.2 99 YOUNTS PEAK 8350 14.7 16.4 90 12.6 15.6 81 ----- ----- Basin wide percent of average 90 98 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.7 6.7 85 5.3 7.5 71 BIG GOOSE 7990 7.3 -M * 8.2 -M * BONE SPRINGS DIV 9350 13.9 15.4 90 13.0 13.8 94 BURGESS JUNCTION 7880 10.4 11.0 95 10.6 10.4 102 CLOUD PEAK RESERVOIR 9860 13.4 13.6 99 11.0 12.1 91 DOME LAKE 8880 10.3 12.9 80 11.4 12.1 94 GRAVE SPRINGS 8550 7.2 8.8 82 7.0 8.7 80 HANSEN SAWMILL 8760 5.9 6.7 88 6.5 7.2 90 MIDDLE POWDER 7760 10.1 11.3 89 7.3 10.8 68 POWDER RIVER PASS 9480 8.8 10.2 86 10.4 10.7 97 SUCKER CREEK 8880 11.1 11.3 98 13.1 12.1 108 TIE CREEK 6870 6.4 -M * 8.3 9.9 84 ----- ----- Basin wide percent of average 90 90 BELLE FOURCHE BLIND PARK 6890 6.0 10.4 58 6.7 9.1 74 NORTH RAPID CREEK 6130 5.8 -M * 5.7 -M * WARREN PEAK 6520 11.0 10.4 106 7.5 7.3 103 ----- ----- Basin wide percent of average 82 87 UPPER N. PLATTE RIVER COLUMBINE 9400 29.1 23.8 122 24.6 23.0 107 DIVIDE PEAK 8800 14.9 19.5 76 15.8 21.2 75 ELK RIVER 8700 18.1 18.9 96 16.1 17.8 90 JOE WRIGHT 10120 20.9 20.3 103 23.6 23.1 102 NORTH FRENCH CREEK 10100 24.3 23.7 103 21.8 21.7 100 OLD BATTLE 10000 24.6 29.7 83 27.8 28.0 99 SOUTH BRUSH CREEK 8400 10.3 11.8 87 10.9 15.0 73 TOWER 10500 43.1 42.4 102 37.7 33.8 112 WEBBER SPRINGS 9200 19.4 25.9 75 20.0 23.5 85 WILLOW CREEK PASS 9540 13.8 10.9 127 14.0 11.6 121 ----- ----- Basin wide percent of average 96 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.2 23.7 73 16.7 17.9 93 CASPER MTN. 7900 14.5 14.7 99 10.8 12.8 84 DEADMAN HILL 10220 12.1 15.5 78 13.6 15.3 89 DEER PARK 9700 13.5 -M * 15.7 -M * LAPRELE CREEK 8320 9.4 9.8 96 9.9 10.8 92 RENO HILL 8400 11.7 12.9 91 10.8 17.4 62 ROACH 9700 14.4 16.1 89 16.0 19.6 82 SAND LAKE 10080 21.7 30.8 70 18.5 18.8 98 SOUTH PASS 9040 13.7 15.6 88 13.1 15.8 83 WINDY PEAK 7840 7.1 8.0 89 9.0 8.6 105 ----- ----- Basin wide percent of average 83 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.8 10.9 108 12.1 14.3 85 DIVIDE PEAK 8800 14.9 19.5 76 15.8 21.2 75 OLD BATTLE 10000 24.6 29.7 83 27.8 28.0 99 SANDSTONE RS 8150 14.6 14.0 104 15.6 17.4 90 WHISKEY PARK 8950 23.4 27.1 86 24.9 26.0 96 ----- ----- Basin wide percent of average 88 90 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.3 13.8 82 10.1 15.8 64 BLIND BULL SUM 8650 24.4 27.9 87 17.2 23.2 74 EAST RIM DIVIDE 7930 11.4 13.4 85 10.3 14.8 70 ELKHART PARK G.S. 9400 11.9 13.1 91 11.4 15.5 74 GROS VENTRE SUMMIT 8775 10.8 14.8 73 9.5 15.5 61 KENDALL R.S. 7740 14.2 14.5 98 13.4 15.1 89 LOOMIS PARK 8240 16.9 16.8 101 16.5 18.3 90 NEW FORK LAKE 8340 10.5 10.9 96 9.3 14.1 66 SNIDER BASIN 8250 11.7 14.3 82 11.1 14.8 75 SPRING CREEK DIVIDE 9000 22.2 26.5 84 21.2 26.6 80 TRIPLE PEAK 8500 22.4 24.4 92 22.6 30.2 75 ----- ----- Basin wide percent of average 88 75 LOWER GREEN RIVER HAMS FORK 7840 12.0 12.0 100 8.5 13.0 65 HEWINTA 9500 11.1 10.4 107 11.0 12.0 92 HICKERSON PARK 9150 6.2 6.1 102 6.7 8.6 78 HOLE-IN-ROCK 9150 6.0 5.8 103 6.6 8.6 77 INDIAN CREEK 9425 21.9 27.0 81 17.9 25.0 72 KELLEY R.S. 8180 13.9 16.3 85 14.2 18.3 78 STEEL CREEK PARK 10100 12.3 15.0 82 12.3 11.8 104 ----- ----- Basin wide percent of average 90 79 UPPER BEAR RIVER BUG LAKE 7950 14.3 19.6 73 12.4 18.2 68 HAYDEN FORK 9400 14.6 15.7 93 16.5 17.6 94 KELLEY R.S. 8180 13.9 16.3 85 14.2 18.3 78 LILY LAKE 9050 10.2 12.3 83 12.5 13.6 92 MONTE CRISTO 8960 20.1 27.4 73 17.4 23.8 73 SALT RIVER SUMMIT 7600 13.2 13.7 96 13.6 16.4 83 TRIAL LAKE 9960 21.5 24.1 89 20.7 22.3 93 ----- ----- Basin wide percent of average 84 82 ----------------------------------------------------------------------------- -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.