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 THURSDAY: APRIL 27 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.9 12.0 41 20.8 24.9 84 COTTONWOOD CREEK 7600 17.1 20.8 82 -M 27.9 * GRANITE CREEK 6770 6.7 14.1 48 18.5 26.4 70 GRASSY LAKE 7265 24.0 34.9 69 32.9 41.4 79 GROS VENTRE SUMMIT 8775 9.7 14.4 67 11.8 17.9 66 LEWIS LAKE DIVIDE 7860 -M 35.0 * 30.6 42.1 73 PHILLIPS BENCH 8200 21.7 29.9 73 23.6 33.2 71 SALT RIVER SUMMIT 7600 7.4 11.6 64 15.3 18.9 81 SNAKE RIVER STATION 6920 4.9 16.9 29 21.4 29.0 74 SPRING CREEK DIVIDE 9000 21.9 29.6 74 22.8 30.4 75 THUMB DIVIDE 7980 -M 15.7 * -M 23.3 * TOGWOTEE PASS 9580 23.6 28.0 84 25.8 31.5 82 TWO OCEAN PLATEAU 9360 26.2 27.4 96 25.2 34.3 73 WILLOW CREEK 8450 25.1 31.8 79 31.8 35.8 89 ----- ----- Basin wide percent of average 71 77 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 22.4 25.9 86 21.1 20.8 101 BLACK BEAR 7950 35.3 39.9 88 37.0 45.8 81 CANYON 7940 10.9 11.6 94 15.9 16.0 99 FISHER CREEK 9100 -M 38.5 * 34.3 41.5 83 MADISON PLATEAU 7750 17.3 24.2 71 24.2 29.5 82 NORTHEAST ENTRANCE 7350 3.9 6.7 58 13.9 13.6 102 PARKER PEAK 9400 18.7 23.6 79 -M 17.9 * SYLVAN LAKE 8420 18.0 23.8 76 23.7 21.9 108 THUMB DIVIDE 7980 -M 15.7 * -M 23.3 * TWO OCEAN PLATEAU 9360 26.2 27.4 96 25.2 34.3 73 WHISKEY CREEK 6800 10.9 15.9 69 18.2 24.5 74 WHITE MILL 8700 26.2 26.2 100 23.7 32.1 74 WOLVERINE 7650 1.5 9.0 17 11.7 14.9 79 ----- ----- Basin wide percent of average 82 84 WIND RIVER BURROUGHS CREEK 8750 12.3 13.5 91 15.4 19.0 81 COLD SPRINGS 9630 .8 7.3 11 9.7 12.8 76 DEER PARK 9700 14.9 -M * 20.3 -M * HOBBS PARK 10100 10.9 17.6 62 12.0 16.9 71 LITTLE WARM 9620 9.5 11.2 85 14.3 15.9 90 SOUTH PASS 9040 13.8 18.0 77 17.4 20.1 87 ST. LAWRENCE ALT 8620 .1 5.8 2 7.1 12.2 58 TOGWOTEE PASS 9580 23.6 28.0 84 25.8 31.5 82 TOWNSEND CREEK 8700 5.2 9.7 54 10.8 15.1 72 ----- ----- Basin wide percent of average 69 78 BIGHORN BASIN BALD MTN. 9375 22.7 23.7 96 21.4 20.3 105 BEAR TRAP MEADOW 7900 .0 4.9 0 7.9 10.3 77 BLACKWATER 9780 19.7 25.4 78 18.8 20.3 93 BONE SPRINGS DIV 9350 17.4 18.3 95 18.0 17.7 102 EVENING STAR 9200 23.2 30.4 76 27.0 25.5 106 GRAVE SPRINGS 8550 7.9 11.3 70 10.1 12.0 84 KIRWIN 9550 9.9 11.5 86 12.7 13.0 98 MARQUETTE 8760 7.5 8.6 87 8.9 13.0 68 MIDDLE POWDER 7760 11.3 14.5 78 10.8 14.4 75 OWL CREEK 8975 .0 3.7 -0 5.5 7.8 71 POWDER RIVER PASS 9480 8.2 10.8 76 13.6 14.3 95 SHELL CREEK 9580 16.2 16.8 96 15.3 15.5 99 SYLVAN LAKE 8420 18.0 23.8 76 23.7 21.9 108 SYLVAN ROAD 8120 7.1 8.6 83 16.6 18.3 91 TIMBER CREEK 7950 1.0 6.2 16 6.9 9.6 72 YOUNTS PEAK 8350 15.9 18.3 87 15.5 19.0 82 ----- ----- Basin wide percent of average 79 92 SHOSHONE RIVER BLACKWATER 9780 19.7 25.4 78 18.8 20.3 93 EVENING STAR 9200 23.2 30.4 76 27.0 25.5 106 KIRWIN 9550 9.9 11.5 86 12.7 13.0 98 MARQUETTE 8760 7.5 8.6 87 8.9 13.0 68 SYLVAN LAKE 8420 18.0 23.8 76 23.7 21.9 108 SYLVAN ROAD 8120 7.1 8.6 83 16.6 18.3 91 YOUNTS PEAK 8350 15.9 18.3 87 15.5 19.0 82 ----- ----- Basin wide percent of average 80 94 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 4.9 0 7.9 10.3 77 BIG GOOSE 7990 8.1 -M * 11.8 -M * BONE SPRINGS DIV 9350 17.4 18.3 95 18.0 17.7 102 BURGESS JUNCTION 7880 13.3 13.3 100 14.8 14.0 106 CLOUD PEAK RESERVOIR 9860 17.8 17.5 102 16.5 16.6 99 DOME LAKE 8880 11.4 14.9 77 16.0 16.0 100 GRAVE SPRINGS 8550 7.9 11.3 70 10.1 12.0 84 HANSEN SAWMILL 8760 2.4 7.1 34 9.5 10.0 95 MIDDLE POWDER 7760 11.3 14.5 78 10.8 14.4 75 POWDER RIVER PASS 9480 8.2 10.8 76 13.6 14.3 95 SUCKER CREEK 8880 13.2 13.7 96 18.1 16.0 113 TIE CREEK 6870 3.1 -M * 12.7 13.4 95 ----- ----- Basin wide percent of average 81 96 BELLE FOURCHE BLIND PARK 6890 2.1 10.1 21 11.6 13.3 87 NORTH RAPID CREEK 6130 4.7 -M * 11.1 -M * WARREN PEAK 6520 7.9 10.1 78 11.5 10.0 115 ----- ----- Basin wide percent of average 50 99 UPPER N. PLATTE RIVER COLUMBINE 9400 20.5 22.7 90 28.6 27.6 104 DIVIDE PEAK 8800 12.5 19.9 63 19.5 26.7 73 ELK RIVER 8700 -M 17.2 * 20.9 21.7 96 JOE WRIGHT 10120 25.0 24.6 102 29.5 29.6 100 NORTH FRENCH CREEK 10100 27.1 29.1 93 27.0 27.4 99 OLD BATTLE 10000 28.4 37.6 76 33.0 35.0 94 SOUTH BRUSH CREEK 8400 6.5 11.2 58 14.3 20.0 72 TOWER 10500 46.8 50.6 92 45.0 42.3 106 WEBBER SPRINGS 9200 18.1 26.6 68 24.4 29.9 82 WILLOW CREEK PASS 9540 18.3 13.5 136 17.5 15.0 117 ----- ----- Basin wide percent of average 86 94 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.6 28.9 61 20.0 23.2 86 CASPER MTN. 7900 14.8 18.1 82 15.1 18.2 83 DEADMAN HILL 10220 19.5 18.8 104 18.6 20.5 91 DEER PARK 9700 14.9 -M * 20.3 -M * LAPRELE CREEK 8320 8.2 7.2 114 16.5 14.3 115 RENO HILL 8400 14.1 13.9 101 17.6 22.0 80 ROACH 9700 15.1 18.1 83 20.7 25.2 82 SAND LAKE 10080 25.6 36.8 70 23.5 24.2 97 SOUTH PASS 9040 13.8 18.0 77 17.4 20.1 87 WINDY PEAK 7840 5.7 8.2 70 14.8 11.8 125 ----- ----- Basin wide percent of average 80 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 6.3 -0 14.9 18.1 82 DIVIDE PEAK 8800 12.5 19.9 63 19.5 26.7 73 OLD BATTLE 10000 28.4 37.6 76 33.0 35.0 94 SANDSTONE RS 8150 6.7 11.2 60 19.0 22.4 85 WHISKEY PARK 8950 25.0 29.9 84 29.2 33.2 88 ----- ----- Basin wide percent of average 69 85 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.1 14.3 78 12.1 18.2 66 BLIND BULL SUM 8650 24.6 24.8 99 18.7 26.6 70 EAST RIM DIVIDE 7930 9.8 14.9 66 11.8 17.1 69 ELKHART PARK G.S. 9400 10.3 14.2 73 12.6 17.9 70 GROS VENTRE SUMMIT 8775 9.7 14.4 67 11.8 17.9 66 KENDALL R.S. 7740 6.3 11.2 56 14.9 17.4 86 LOOMIS PARK 8240 11.4 15.5 74 17.5 21.1 83 NEW FORK LAKE 8340 6.1 9.5 64 10.9 16.2 67 SNIDER BASIN 8250 9.0 13.6 66 11.8 17.0 69 SPRING CREEK DIVIDE 9000 21.9 29.6 74 22.8 30.4 75 TRIPLE PEAK 8500 15.3 25.5 60 24.5 34.6 71 ----- ----- Basin wide percent of average 72 72 LOWER GREEN RIVER HAMS FORK 7840 2.8 5.7 49 9.7 15.0 65 HEWINTA 9500 4.6 6.2 74 13.3 15.9 84 HICKERSON PARK 9150 3.4 3.8 89 9.6 11.9 81 HOLE-IN-ROCK 9150 1.1 3.3 33 8.7 11.9 73 INDIAN CREEK 9425 22.2 29.3 76 20.1 28.9 70 KELLEY R.S. 8180 10.4 15.7 66 16.1 21.0 77 STEEL CREEK PARK 10100 15.2 18.6 82 15.4 15.7 98 ----- ----- Basin wide percent of average 72 77 UPPER BEAR RIVER BUG LAKE 7950 10.4 17.0 61 14.6 22.2 66 HAYDEN FORK 9400 7.5 7.7 97 19.3 22.5 86 KELLEY R.S. 8180 10.4 15.7 66 16.1 21.0 77 LILY LAKE 9050 5.0 9.8 51 15.3 17.6 87 MONTE CRISTO 8960 15.6 27.0 58 21.3 29.7 72 SALT RIVER SUMMIT 7600 7.4 11.6 64 15.3 18.9 81 TRIAL LAKE 9960 20.7 24.5 84 23.1 27.7 83 ----- ----- Basin wide percent of average 68 78 ----------------------------------------------------------------------------- -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.