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 18 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.1 16.9 101 18.3 21.6 85 COTTONWOOD CREEK 7600 21.8 22.1 99 21.2 24.2 88 GRANITE CREEK 6770 15.0 17.4 86 16.3 22.7 72 GRASSY LAKE 7265 30.2 33.6 90 28.5 35.6 80 GROS VENTRE SUMMIT 8775 10.2 14.6 70 8.9 15.4 58 LEWIS LAKE DIVIDE 7860 24.5 33.3 74 25.8 36.1 71 PHILLIPS BENCH 8200 22.1 27.4 81 21.3 28.6 74 SALT RIVER SUMMIT 7600 12.6 13.5 93 13.1 16.3 80 SNAKE RIVER STATION 6920 16.2 17.9 91 18.4 24.9 74 SPRING CREEK DIVIDE 9000 21.7 26.2 83 20.7 26.3 79 THUMB DIVIDE 7980 -M 16.0 * -M 20.2 * TOGWOTEE PASS 9580 19.8 23.3 85 20.6 27.1 76 TWO OCEAN PLATEAU 9360 23.5 25.1 94 20.5 29.7 69 WILLOW CREEK 8450 27.9 28.8 97 27.1 31.0 87 ----- ----- Basin wide percent of average 88 77 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.0 22.2 90 18.2 16.8 108 BLACK BEAR 7950 33.8 35.8 94 -M 37.9 * CANYON 7940 12.7 12.1 105 13.6 13.4 101 FISHER CREEK 9100 29.9 33.6 89 28.4 34.2 83 MADISON PLATEAU 7750 17.9 23.1 77 20.1 24.5 82 NORTHEAST ENTRANCE 7350 10.4 8.9 117 11.9 11.1 107 PARKER PEAK 9400 17.2 20.3 85 -M 14.5 * SYLVAN LAKE 8420 18.5 20.7 89 20.1 17.9 112 THUMB DIVIDE 7980 -M 16.0 * -M 20.2 * TWO OCEAN PLATEAU 9360 23.5 25.1 94 20.5 29.7 69 WHISKEY CREEK 6800 13.6 16.3 83 15.3 20.3 75 WHITE MILL 8700 22.9 23.8 96 20.0 26.5 75 WOLVERINE 7650 11.4 11.1 103 10.6 12.0 88 ----- ----- Basin wide percent of average 92 87 WIND RIVER BURROUGHS CREEK 8750 12.0 14.3 84 12.6 15.5 81 COLD SPRINGS 9630 6.1 7.8 78 7.3 9.6 76 DEER PARK 9700 12.5 -M * 14.7 -M * HOBBS PARK 10100 9.4 13.8 68 8.1 12.8 63 LITTLE WARM 9620 10.1 10.6 95 11.0 12.2 90 SOUTH PASS 9040 12.7 15.4 82 12.4 15.6 79 ST. LAWRENCE ALT 8620 3.6 7.1 51 4.6 9.2 50 TOGWOTEE PASS 9580 19.8 23.3 85 20.6 27.1 76 TOWNSEND CREEK 8700 5.3 9.2 58 6.2 11.3 55 ----- ----- Basin wide percent of average 78 73 BIGHORN BASIN BALD MTN. 9375 18.0 19.1 94 16.5 15.9 104 BEAR TRAP MEADOW 7900 5.5 6.6 83 5.1 7.3 70 BLACKWATER 9780 16.7 20.6 81 15.8 16.8 94 BONE SPRINGS DIV 9350 13.2 15.2 87 13.0 13.6 96 EVENING STAR 9200 23.0 25.2 91 23.6 21.0 112 GRAVE SPRINGS 8550 6.9 8.7 79 6.7 8.6 78 KIRWIN 9550 7.9 9.2 86 9.5 9.8 97 MARQUETTE 8760 5.7 7.4 77 5.6 8.4 67 MIDDLE POWDER 7760 9.6 11.1 86 6.9 10.6 65 OWL CREEK 8975 3.9 4.2 93 4.3 5.6 77 POWDER RIVER PASS 9480 8.4 10.1 83 10.0 10.6 94 SHELL CREEK 9580 13.2 14.0 94 11.6 12.0 97 SYLVAN LAKE 8420 18.5 20.7 89 20.1 17.9 112 SYLVAN ROAD 8120 12.7 12.3 103 14.7 15.0 98 TIMBER CREEK 7950 2.4 5.7 42 4.0 6.1 66 YOUNTS PEAK 8350 14.2 16.2 88 12.2 15.4 79 ----- ----- Basin wide percent of average 87 92 SHOSHONE RIVER BLACKWATER 9780 16.7 20.6 81 15.8 16.8 94 EVENING STAR 9200 23.0 25.2 91 23.6 21.0 112 KIRWIN 9550 7.9 9.2 86 9.5 9.8 97 MARQUETTE 8760 5.7 7.4 77 5.6 8.4 67 SYLVAN LAKE 8420 18.5 20.7 89 20.1 17.9 112 SYLVAN ROAD 8120 12.7 12.3 103 14.7 15.0 98 YOUNTS PEAK 8350 14.2 16.2 88 12.2 15.4 79 ----- ----- Basin wide percent of average 88 97 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.5 6.6 83 5.1 7.3 70 BIG GOOSE 7990 6.8 -M * 7.8 -M * BONE SPRINGS DIV 9350 13.2 15.2 87 13.0 13.6 96 BURGESS JUNCTION 7880 9.9 10.9 91 10.2 10.2 100 CLOUD PEAK RESERVOIR 9860 13.0 13.3 98 10.9 11.9 92 DOME LAKE 8880 9.7 12.7 76 10.8 11.9 91 GRAVE SPRINGS 8550 6.9 8.7 79 6.7 8.6 78 HANSEN SAWMILL 8760 5.6 6.6 85 6.2 7.0 89 MIDDLE POWDER 7760 9.6 11.1 86 6.9 10.6 65 POWDER RIVER PASS 9480 8.4 10.1 83 10.0 10.6 94 SUCKER CREEK 8880 10.5 11.1 95 12.6 11.9 106 TIE CREEK 6870 6.1 -M * 8.1 9.7 84 ----- ----- Basin wide percent of average 87 89 BELLE FOURCHE BLIND PARK 6890 5.9 10.3 57 6.6 8.9 74 NORTH RAPID CREEK 6130 5.7 -M * 5.7 -M * WARREN PEAK 6520 11.0 10.3 107 7.5 7.2 104 ----- ----- Basin wide percent of average 82 88 UPPER N. PLATTE RIVER COLUMBINE 9400 28.5 23.7 120 24.3 22.7 107 DIVIDE PEAK 8800 14.6 19.2 76 15.1 20.9 72 ELK RIVER 8700 17.8 18.7 95 15.9 17.5 91 JOE WRIGHT 10120 20.7 20.0 103 23.2 22.8 102 NORTH FRENCH CREEK 10100 23.9 23.4 102 21.5 21.4 100 OLD BATTLE 10000 24.1 29.3 82 27.0 27.6 98 SOUTH BRUSH CREEK 8400 10.0 11.6 86 10.6 14.8 72 TOWER 10500 42.4 41.9 101 37.4 33.4 112 WEBBER SPRINGS 9200 19.1 25.5 75 19.7 23.2 85 WILLOW CREEK PASS 9540 13.7 10.8 127 13.7 11.4 120 ----- ----- Basin wide percent of average 96 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.0 23.3 73 16.5 17.6 94 CASPER MTN. 7900 13.6 14.4 94 10.2 12.6 81 DEADMAN HILL 10220 11.8 15.3 77 13.4 15.0 89 DEER PARK 9700 12.5 -M * 14.7 -M * LAPRELE CREEK 8320 8.9 9.6 93 9.4 10.6 89 RENO HILL 8400 10.9 12.7 86 10.1 17.1 59 ROACH 9700 14.2 15.9 89 15.9 19.4 82 SAND LAKE 10080 21.3 30.4 70 18.1 18.6 97 SOUTH PASS 9040 12.7 15.4 82 12.4 15.6 79 WINDY PEAK 7840 6.9 7.8 88 8.7 8.4 104 ----- ----- Basin wide percent of average 81 85 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.2 10.9 103 11.7 14.1 83 DIVIDE PEAK 8800 14.6 19.2 76 15.1 20.9 72 OLD BATTLE 10000 24.1 29.3 82 27.0 27.6 98 SANDSTONE RS 8150 14.3 13.8 104 15.2 17.2 88 WHISKEY PARK 8950 22.9 26.8 85 24.4 25.6 95 ----- ----- Basin wide percent of average 87 89 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.8 13.6 79 9.6 15.7 61 BLIND BULL SUM 8650 23.7 27.6 86 16.7 23.0 73 EAST RIM DIVIDE 7930 11.0 13.3 83 10.1 14.6 69 ELKHART PARK G.S. 9400 11.4 13.0 88 10.8 15.4 70 GROS VENTRE SUMMIT 8775 10.2 14.6 70 8.9 15.4 58 KENDALL R.S. 7740 13.9 14.5 96 13.1 15.0 87 LOOMIS PARK 8240 16.4 16.7 98 16.1 18.2 88 NEW FORK LAKE 8340 10.3 10.8 95 9.2 13.9 66 SNIDER BASIN 8250 11.5 14.2 81 10.9 14.6 75 SPRING CREEK DIVIDE 9000 21.7 26.2 83 20.7 26.3 79 TRIPLE PEAK 8500 21.8 24.2 90 22.1 30.0 74 ----- ----- Basin wide percent of average 86 73 LOWER GREEN RIVER HAMS FORK 7840 11.7 12.0 98 8.3 12.9 64 HEWINTA 9500 10.6 10.3 103 10.8 11.8 92 HICKERSON PARK 9150 5.9 6.0 98 6.3 8.5 74 HOLE-IN-ROCK 9150 5.7 5.7 100 6.3 8.5 74 INDIAN CREEK 9425 20.9 26.6 79 17.2 24.7 70 KELLEY R.S. 8180 13.3 16.1 83 13.5 18.1 75 STEEL CREEK PARK 10100 11.9 14.7 81 11.9 11.7 102 ----- ----- Basin wide percent of average 88 77 UPPER BEAR RIVER BUG LAKE 7950 13.2 19.3 68 11.6 17.9 65 HAYDEN FORK 9400 13.9 15.6 89 15.9 17.3 92 KELLEY R.S. 8180 13.3 16.1 83 13.5 18.1 75 LILY LAKE 9050 9.7 12.1 80 11.9 13.4 89 MONTE CRISTO 8960 19.0 27.0 70 16.9 23.5 72 SALT RIVER SUMMIT 7600 12.6 13.5 93 13.1 16.3 80 TRIAL LAKE 9960 20.7 23.9 87 20.2 22.1 91 ----- ----- Basin wide percent of average 80 80 ----------------------------------------------------------------------------- -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.