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 WEDNESDAY: MAY 3 , 2000 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 9.9 -0 20.8 25.4 82 COTTONWOOD CREEK 7600 12.1 19.1 63 -M 28.4 * GRANITE CREEK 6770 2.3 12.1 19 18.6 27.0 69 GRASSY LAKE 7265 18.4 32.9 56 32.9 42.2 78 GROS VENTRE SUMMIT 8775 6.5 13.4 49 12.0 18.2 66 LEWIS LAKE DIVIDE 7860 -M 33.7 * 30.7 42.9 72 PHILLIPS BENCH 8200 18.5 28.9 64 23.7 33.8 70 SALT RIVER SUMMIT 7600 2.4 9.3 26 15.4 19.3 80 SNAKE RIVER STATION 6920 .1 15.7 1 21.5 29.6 73 SPRING CREEK DIVIDE 9000 19.2 29.1 66 22.8 31.0 74 THUMB DIVIDE 7980 3.2 14.5 22 17.2 23.8 72 TOGWOTEE PASS 9580 23.3 28.0 83 25.9 32.1 81 TWO OCEAN PLATEAU 9360 23.3 27.4 85 25.3 34.9 72 WILLOW CREEK 8450 18.0 31.3 58 31.8 36.4 87 ----- ----- Basin wide percent of average 54 75 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.5 25.8 83 21.8 21.4 102 BLACK BEAR 7950 33.5 39.4 85 37.4 46.8 80 CANYON 7940 7.2 10.3 70 16.2 16.5 98 FISHER CREEK 9100 -M 38.5 * 34.6 42.5 81 MADISON PLATEAU 7750 14.9 23.1 65 24.5 30.1 81 NORTHEAST ENTRANCE 7350 .0 5.4 0 14.0 14.1 99 PARKER PEAK 9400 16.5 23.6 70 -M 18.4 * SYLVAN LAKE 8420 17.6 23.3 76 23.8 22.6 105 THUMB DIVIDE 7980 3.2 14.5 22 17.2 23.8 72 TWO OCEAN PLATEAU 9360 23.3 27.4 85 25.3 34.9 72 WHISKEY CREEK 6800 8.3 14.4 58 18.3 25.1 73 WHITE MILL 8700 24.9 26.1 95 23.9 32.9 73 WOLVERINE 7650 .0 7.4 0 11.2 15.4 73 ----- ----- Basin wide percent of average 71 82 WIND RIVER BURROUGHS CREEK 8750 9.1 12.0 76 15.4 19.6 79 COLD SPRINGS 9630 .0 6.2 0 9.8 13.3 74 DEER PARK 9700 12.5 -M * 20.6 -M * HOBBS PARK 10100 8.2 17.8 46 12.4 17.5 71 LITTLE WARM 9620 -M 9.7 * -M 16.5 * SOUTH PASS 9040 10.5 17.9 59 17.6 20.8 85 ST. LAWRENCE ALT 8620 .0 5.0 0 7.2 12.6 57 TOGWOTEE PASS 9580 23.3 28.0 83 25.9 32.1 81 TOWNSEND CREEK 8700 1.2 9.0 13 11.0 15.7 70 ----- ----- Basin wide percent of average 55 75 BIGHORN BASIN BALD MTN. 9375 20.8 24.1 86 21.7 21.1 103 BEAR TRAP MEADOW 7900 .0 3.8 0 8.1 10.8 75 BLACKWATER 9780 19.2 25.6 75 19.2 20.8 92 BONE SPRINGS DIV 9350 15.3 18.1 85 18.4 18.4 100 EVENING STAR 9200 21.4 30.7 70 27.2 26.2 104 GRAVE SPRINGS 8550 5.5 11.5 48 10.3 12.6 82 KIRWIN 9550 7.9 11.5 69 13.2 13.5 98 MARQUETTE 8760 5.1 8.5 60 10.0 13.7 73 MIDDLE POWDER 7760 8.7 14.7 59 10.9 15.0 73 OWL CREEK 8975 .0 3.1 0 6.0 8.3 72 POWDER RIVER PASS 9480 5.5 9.9 56 13.8 14.9 93 SHELL CREEK 9580 15.0 17.0 88 15.7 16.2 97 SYLVAN LAKE 8420 17.6 23.3 76 23.8 22.6 105 SYLVAN ROAD 8120 2.1 7.3 29 16.5 18.8 88 TIMBER CREEK 7950 .0 5.5 0 7.2 10.2 71 YOUNTS PEAK 8350 14.3 17.9 80 15.6 19.5 80 ----- ----- Basin wide percent of average 68 90 SHOSHONE RIVER BLACKWATER 9780 19.2 25.6 75 19.2 20.8 92 EVENING STAR 9200 21.4 30.7 70 27.2 26.2 104 KIRWIN 9550 7.9 11.5 69 13.2 13.5 98 MARQUETTE 8760 5.1 8.5 60 10.0 13.7 73 SYLVAN LAKE 8420 17.6 23.3 76 23.8 22.6 105 SYLVAN ROAD 8120 2.1 7.3 29 16.5 18.8 88 YOUNTS PEAK 8350 14.3 17.9 80 15.6 19.5 80 ----- ----- Basin wide percent of average 70 93 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 3.8 0 8.1 10.8 75 BIG GOOSE 7990 5.1 -M * 12.2 -M * BONE SPRINGS DIV 9350 15.3 18.1 85 18.4 18.4 100 BURGESS JUNCTION 7880 11.4 13.2 86 15.1 14.6 103 CLOUD PEAK RESERVOIR 9860 16.1 17.5 92 16.7 17.4 96 DOME LAKE 8880 8.2 14.3 57 16.4 16.6 99 GRAVE SPRINGS 8550 5.5 11.5 48 10.3 12.6 82 HANSEN SAWMILL 8760 .4 6.5 6 9.5 10.5 90 MIDDLE POWDER 7760 8.7 14.7 59 10.9 15.0 73 POWDER RIVER PASS 9480 5.5 9.9 56 13.8 14.9 93 SUCKER CREEK 8880 10.4 13.3 78 18.6 16.8 111 TIE CREEK 6870 .1 -M * 12.8 14.0 91 ----- ----- Basin wide percent of average 66 93 BELLE FOURCHE BLIND PARK 6890 .0 8.9 0 11.7 14.1 83 NORTH RAPID CREEK 6130 .0 -M * 11.2 -M * WARREN PEAK 6520 2.9 8.9 33 11.7 10.5 111 ----- ----- Basin wide percent of average 16 95 UPPER N. PLATTE RIVER COLUMBINE 9400 13.3 21.0 63 28.8 28.3 102 DIVIDE PEAK 8800 9.1 18.3 50 19.4 27.5 71 ELK RIVER 8700 3.9 15.1 26 19.9 22.3 89 JOE WRIGHT 10120 -M 24.6 * -M 30.6 * NORTH FRENCH CREEK 10100 24.0 29.0 83 27.4 28.3 97 OLD BATTLE 10000 26.8 38.0 71 33.2 36.0 92 SOUTH BRUSH CREEK 8400 .3 9.9 3 14.5 20.8 70 TOWER 10500 42.6 51.1 83 45.2 43.6 104 WEBBER SPRINGS 9200 14.9 25.2 59 24.6 30.8 80 WILLOW CREEK PASS 9540 16.6 13.1 127 17.7 15.6 113 ----- ----- Basin wide percent of average 69 91 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.9 28.3 53 20.6 24.0 86 CASPER MTN. 7900 10.9 16.9 64 15.4 19.1 81 DEADMAN HILL 10220 20.0 19.0 105 19.4 21.3 91 DEER PARK 9700 12.5 -M * 20.6 -M * LAPRELE CREEK 8320 3.8 5.9 64 16.6 14.9 111 RENO HILL 8400 10.4 12.7 82 17.8 22.5 79 ROACH 9700 12.8 17.8 72 21.2 26.1 81 SAND LAKE 10080 24.0 36.9 65 24.2 25.0 97 SOUTH PASS 9040 10.5 17.9 59 17.6 20.8 85 WINDY PEAK 7840 2.3 7.3 32 15.1 12.4 122 ----- ----- Basin wide percent of average 67 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 4.1 0 14.8 18.7 79 DIVIDE PEAK 8800 9.1 18.3 50 19.4 27.5 71 OLD BATTLE 10000 26.8 38.0 71 33.2 36.0 92 SANDSTONE RS 8150 .3 8.7 3 19.0 23.2 82 WHISKEY PARK 8950 22.1 29.0 76 29.3 34.3 85 ----- ----- Basin wide percent of average 59 83 UPPER GREEN RIVER BIG SANDY OPENING 9100 6.3 13.3 47 12.2 18.6 66 BLIND BULL SUM 8650 21.2 22.7 93 18.8 27.1 69 EAST RIM DIVIDE 7930 7.2 14.5 50 11.8 17.4 68 ELKHART PARK G.S. 9400 6.6 13.4 49 12.6 18.3 69 GROS VENTRE SUMMIT 8775 6.5 13.4 49 12.0 18.2 66 KENDALL R.S. 7740 .7 9.1 8 14.8 17.7 84 LOOMIS PARK 8240 6.9 14.6 47 -M 21.6 * NEW FORK LAKE 8340 1.2 8.7 14 11.0 16.5 67 SNIDER BASIN 8250 5.6 12.4 45 11.9 17.3 69 SPRING CREEK DIVIDE 9000 19.2 29.1 66 22.8 31.0 74 TRIPLE PEAK 8500 10.0 24.5 41 24.5 35.2 70 ----- ----- Basin wide percent of average 52 70 LOWER GREEN RIVER HAMS FORK 7840 .5 4.9 10 9.8 15.3 64 HEWINTA 9500 .0 4.5 -0 13.5 16.5 82 HICKERSON PARK 9150 .0 2.6 -0 9.6 12.5 77 HOLE-IN-ROCK 9150 -M 2.0 * 8.9 12.5 71 INDIAN CREEK 9425 18.6 28.3 66 20.2 29.4 69 KELLEY R.S. 8180 5.8 14.3 41 16.2 21.5 75 STEEL CREEK PARK 10100 13.4 18.6 72 15.5 16.3 95 ----- ----- Basin wide percent of average 52 76 UPPER BEAR RIVER BUG LAKE 7950 5.5 15.2 36 14.7 22.7 65 HAYDEN FORK 9400 2.0 5.8 34 19.4 23.2 84 KELLEY R.S. 8180 5.8 14.3 41 16.2 21.5 75 LILY LAKE 9050 .2 8.3 2 15.4 18.2 85 MONTE CRISTO 8960 10.5 25.6 41 21.5 30.5 70 SALT RIVER SUMMIT 7600 2.4 9.3 26 15.4 19.3 80 TRIAL LAKE 9960 17.4 23.6 74 23.1 28.5 81 ----- ----- Basin wide percent of average 43 77 ----------------------------------------------------------------------------- -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.