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 FRIDAY: APRIL 14 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.4 16.1 77 19.9 23.8 84 COTTONWOOD CREEK 7600 19.4 23.4 83 22.7 26.8 85 GRANITE CREEK 6770 11.6 17.9 65 17.5 25.2 69 GRASSY LAKE 7265 28.9 37.7 77 31.2 39.7 79 GROS VENTRE SUMMIT 8775 11.2 16.0 70 10.5 17.1 61 LEWIS LAKE DIVIDE 7860 -M 36.7 * 28.4 40.4 70 PHILLIPS BENCH 8200 24.6 30.8 80 22.9 31.9 72 SALT RIVER SUMMIT 7600 11.0 13.9 79 14.3 18.1 79 SNAKE RIVER STATION 6920 11.8 18.6 63 20.1 27.9 72 SPRING CREEK DIVIDE 9000 22.3 29.3 76 21.9 29.3 75 THUMB DIVIDE 7980 -M 17.4 * -M 22.3 * TOGWOTEE PASS 9580 20.6 26.9 77 23.2 30.3 77 TWO OCEAN PLATEAU 9360 26.3 26.6 99 23.5 32.8 72 WILLOW CREEK 8450 26.1 31.6 83 28.4 34.3 83 ----- ----- Basin wide percent of average 78 75 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.5 25.4 85 20.3 19.5 104 BLACK BEAR 7950 -M 40.1 * 34.2 43.6 78 CANYON 7940 12.9 13.5 96 14.9 15.2 98 FISHER CREEK 9100 32.2 37.8 85 32.1 39.3 82 MADISON PLATEAU 7750 18.3 25.5 72 22.2 28.1 79 NORTHEAST ENTRANCE 7350 -M 9.0 * -M 12.8 * PARKER PEAK 9400 17.8 23.1 77 -M 16.8 * SYLVAN LAKE 8420 18.7 23.8 79 21.9 20.6 106 THUMB DIVIDE 7980 -M 17.4 * -M 22.3 * TWO OCEAN PLATEAU 9360 26.3 26.6 99 23.5 32.8 72 WHISKEY CREEK 6800 14.3 18.1 79 16.9 23.4 72 WHITE MILL 8700 24.5 25.8 95 21.8 30.4 72 WOLVERINE 7650 8.5 11.8 72 11.3 13.8 82 ----- ----- Basin wide percent of average 84 82 WIND RIVER BURROUGHS CREEK 8750 12.1 15.3 79 14.0 17.9 78 COLD SPRINGS 9630 3.8 8.7 44 8.7 11.7 74 DEER PARK 9700 13.1 -M * 17.0 -M * HOBBS PARK 10100 9.8 16.4 60 10.2 15.5 66 LITTLE WARM 9620 9.8 13.4 73 12.3 14.6 84 SOUTH PASS 9040 13.0 17.5 74 14.6 18.6 78 ST. LAWRENCE ALT 8620 2.2 7.1 31 6.1 11.2 54 TOGWOTEE PASS 9580 20.6 26.9 77 23.2 30.3 77 TOWNSEND CREEK 8700 5.4 10.4 52 8.3 13.8 60 ----- ----- Basin wide percent of average 66 73 BIGHORN BASIN BALD MTN. 9375 21.0 22.2 95 19.6 18.9 104 BEAR TRAP MEADOW 7900 2.2 6.9 32 6.5 9.2 71 BLACKWATER 9780 18.2 24.5 74 17.7 19.2 92 BONE SPRINGS DIV 9350 16.0 18.0 89 16.2 16.4 99 EVENING STAR 9200 23.1 29.1 79 25.5 24.1 106 GRAVE SPRINGS 8550 7.6 10.5 72 8.2 10.8 76 KIRWIN 9550 9.1 11.0 83 11.3 11.9 95 MARQUETTE 8760 7.0 8.7 80 7.6 11.2 68 MIDDLE POWDER 7760 12.0 13.5 89 9.0 13.1 69 OWL CREEK 8975 2.7 4.7 57 5.1 7.0 73 POWDER RIVER PASS 9480 8.5 11.5 74 11.7 12.9 91 SHELL CREEK 9580 14.6 16.1 91 13.8 14.3 97 SYLVAN LAKE 8420 18.7 23.8 79 21.9 20.6 106 SYLVAN ROAD 8120 11.3 10.9 104 15.6 17.2 91 TIMBER CREEK 7950 2.4 6.6 36 5.3 8.3 64 YOUNTS PEAK 8350 15.1 18.2 83 13.8 17.8 78 ----- ----- Basin wide percent of average 80 90 SHOSHONE RIVER BLACKWATER 9780 18.2 24.5 74 17.7 19.2 92 EVENING STAR 9200 23.1 29.1 79 25.5 24.1 106 KIRWIN 9550 9.1 11.0 83 11.3 11.9 95 MARQUETTE 8760 7.0 8.7 80 7.6 11.2 68 SYLVAN LAKE 8420 18.7 23.8 79 21.9 20.6 106 SYLVAN ROAD 8120 11.3 10.9 104 15.6 17.2 91 YOUNTS PEAK 8350 15.1 18.2 83 13.8 17.8 78 ----- ----- Basin wide percent of average 81 93 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.2 6.9 32 6.5 9.2 71 BIG GOOSE 7990 8.1 -M * 10.0 -M * BONE SPRINGS DIV 9350 16.0 18.0 89 16.2 16.4 99 BURGESS JUNCTION 7880 -M 12.8 * -M 12.8 * CLOUD PEAK RESERVOIR 9860 15.5 16.7 93 13.7 14.9 92 DOME LAKE 8880 11.2 14.7 76 13.7 14.6 94 GRAVE SPRINGS 8550 7.6 10.5 72 8.2 10.8 76 HANSEN SAWMILL 8760 4.1 7.6 54 7.3 8.9 82 MIDDLE POWDER 7760 12.0 13.5 89 9.0 13.1 69 POWDER RIVER PASS 9480 8.5 11.5 74 11.7 12.9 91 SUCKER CREEK 8880 13.2 13.2 100 16.3 14.6 112 TIE CREEK 6870 5.6 -M * 10.5 12.2 86 ----- ----- Basin wide percent of average 80 89 BELLE FOURCHE BLIND PARK 6890 4.2 11.6 36 8.5 11.6 73 NORTH RAPID CREEK 6130 5.2 -M * 7.3 -M * WARREN PEAK 6520 11.4 11.6 98 9.4 9.0 104 ----- ----- Basin wide percent of average 67 87 UPPER N. PLATTE RIVER COLUMBINE 9400 25.6 24.4 105 26.4 26.1 101 DIVIDE PEAK 8800 -M 21.8 * 17.9 24.8 72 ELK RIVER 8700 15.0 20.4 74 17.7 20.5 86 JOE WRIGHT 10120 -M 24.1 * -M 27.3 * NORTH FRENCH CREEK 10100 24.7 28.0 88 23.5 25.4 93 OLD BATTLE 10000 26.0 35.5 73 29.8 32.6 91 SOUTH BRUSH CREEK 8400 8.0 13.0 62 11.9 18.2 65 TOWER 10500 44.8 48.7 92 41.2 39.2 105 WEBBER SPRINGS 9200 17.8 28.6 62 22.2 27.5 81 WILLOW CREEK PASS 9540 15.1 13.4 113 15.3 13.8 111 ----- ----- Basin wide percent of average 83 90 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.2 28.8 63 18.7 21.3 88 CASPER MTN. 7900 15.0 18.8 80 12.5 16.1 78 DEADMAN HILL 10220 14.1 17.7 80 16.1 18.6 87 DEER PARK 9700 13.1 -M * 17.0 -M * LAPRELE CREEK 8320 8.3 10.0 83 12.2 13.1 93 RENO HILL 8400 12.7 15.4 82 13.7 20.6 67 ROACH 9700 14.4 18.1 80 17.9 23.1 77 SAND LAKE 10080 23.7 35.5 67 20.9 22.2 94 SOUTH PASS 9040 13.0 17.5 74 14.6 18.6 78 WINDY PEAK 7840 6.9 9.3 74 10.6 10.7 99 ----- ----- Basin wide percent of average 74 84 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.3 10.9 30 12.8 16.7 77 DIVIDE PEAK 8800 -M 21.8 * 17.9 24.8 72 OLD BATTLE 10000 26.0 35.5 73 29.8 32.6 91 SANDSTONE RS 8150 10.3 15.3 67 16.3 20.5 80 WHISKEY PARK 8950 23.5 30.6 77 26.4 30.7 86 ----- ----- Basin wide percent of average 68 82 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.9 15.3 71 10.5 17.4 60 BLIND BULL SUM 8650 24.4 30.9 79 17.7 25.6 69 EAST RIM DIVIDE 7930 11.4 14.9 77 11.2 16.3 69 ELKHART PARK G.S. 9400 11.4 14.9 77 12.0 17.1 70 GROS VENTRE SUMMIT 8775 11.2 16.0 70 10.5 17.1 61 KENDALL R.S. 7740 11.3 13.2 86 14.2 16.6 86 LOOMIS PARK 8240 14.5 16.9 86 17.1 20.2 85 NEW FORK LAKE 8340 9.4 10.7 88 10.1 15.5 65 SNIDER BASIN 8250 12.0 15.5 77 11.6 16.2 72 SPRING CREEK DIVIDE 9000 22.3 29.3 76 21.9 29.3 75 TRIPLE PEAK 8500 19.4 26.8 72 23.5 33.1 71 ----- ----- Basin wide percent of average 77 71 LOWER GREEN RIVER HAMS FORK 7840 8.4 6.2 135 8.8 14.3 62 HEWINTA 9500 6.9 9.2 75 12.0 14.5 83 HICKERSON PARK 9150 4.8 6.6 73 7.9 10.7 74 HOLE-IN-ROCK 9150 4.3 6.2 69 7.9 10.7 74 INDIAN CREEK 9425 22.0 30.3 73 19.1 27.7 69 KELLEY R.S. 8180 12.4 17.6 70 14.7 20.1 73 STEEL CREEK PARK 10100 12.8 17.8 72 13.7 14.2 96 ----- ----- Basin wide percent of average 76 75 UPPER BEAR RIVER BUG LAKE 7950 13.8 20.1 69 13.6 20.9 65 HAYDEN FORK 9400 8.8 11.2 79 17.4 20.8 84 KELLEY R.S. 8180 12.4 17.6 70 14.7 20.1 73 LILY LAKE 9050 7.0 12.9 54 13.4 16.2 83 MONTE CRISTO 8960 16.9 29.3 58 19.7 27.7 71 SALT RIVER SUMMIT 7600 11.0 13.9 79 14.3 18.1 79 TRIAL LAKE 9960 19.6 25.9 76 21.2 25.9 82 ----- ----- Basin wide percent of average 68 76 ----------------------------------------------------------------------------- -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.