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 15 , 2002 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 6.5 0 23.2 25.5 91 COTTONWOOD CREEK 7600 8.6 13.9 62 25.4 33.6 76 GRANITE CREEK 6770 .0 7.8 0 20.1 23.4 86 GRASSY LAKE 7265 17.6 26.5 66 39.7 42.6 93 GROS VENTRE SUMMIT 8775 9.6 9.9 97 15.4 16.3 94 LEWIS LAKE DIVIDE 7860 -M 29.0 * -M 43.2 * PHILLIPS BENCH 8200 19.9 24.1 83 28.7 34.6 83 SALT RIVER SUMMIT 7600 .0 4.9 0 16.2 22.6 72 SNAKE RIVER STATION 6920 -M 5.7 * 25.3 26.7 95 SPRING CREEK DIVIDE 9000 23.3 24.7 94 24.9 31.4 79 THUMB DIVIDE 7980 3.5 9.7 36 22.3 23.2 96 TOGWOTEE PASS 9580 24.2 27.4 88 24.7 30.5 81 TWO OCEAN PLATEAU 9360 32.0 30.7 104 30.4 33.9 90 WILLOW CREEK 8450 14.3 25.3 57 36.5 39.8 92 ----- ----- Basin wide percent of average 72 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.6 25.5 93 25.1 25.4 99 BLACK BEAR 8170 36.4 36.5 100 43.0 46.9 92 CANYON 8090 6.7 7.1 94 18.4 19.5 94 FISHER CREEK 9100 38.9 36.6 106 39.8 38.2 104 MADISON PLATEAU 7750 18.0 19.5 92 30.5 31.5 97 NORTHEAST ENTRANCE 7350 .2 3.3 6 13.7 15.8 87 PARKER PEAK 9400 19.6 24.0 82 21.1 22.7 93 SYLVAN LAKE 8420 16.7 20.3 82 27.3 28.9 94 THUMB DIVIDE 7980 3.5 9.7 36 22.3 23.2 96 TWO OCEAN PLATEAU 9360 32.0 30.7 104 30.4 33.9 90 WHISKEY CREEK 6800 10.3 9.8 105 24.7 25.5 97 WHITE MILL 8700 24.0 24.7 97 25.0 30.4 82 WOLVERINE 7650 .0 3.2 0 13.7 16.4 84 ----- ----- Basin wide percent of average 92 93 WIND RIVER BURROUGHS CREEK 8750 13.5 10.4 130 19.0 20.9 91 COLD SPRINGS 9630 .1 3.3 3 11.1 15.8 70 DEER PARK 9700 12.9 17.2 75 20.7 28.6 72 HOBBS PARK 10100 13.4 16.7 80 15.5 19.1 81 LITTLE WARM 9370 6.2 7.8 79 16.7 17.5 95 SOUTH PASS 9040 9.4 14.1 67 16.7 23.2 72 ST. LAWRENCE ALT 8620 .0 3.7 0 10.0 13.6 74 TOGWOTEE PASS 9580 24.2 27.4 88 24.7 30.5 81 TOWNSEND CREEK 8700 .6 5.7 11 12.2 17.3 71 ----- ----- Basin wide percent of average 76 79 BIGHORN BASIN BALD MTN. 9380 18.2 23.0 79 18.0 23.3 77 BEAR TRAP MEADOW 8200 .0 .7 0 11.3 12.7 89 BLACKWATER 9780 27.4 28.8 95 24.8 26.5 94 BONE SPRINGS DIV 9350 15.9 16.2 98 17.5 21.2 83 EVENING STAR 9200 27.2 32.5 84 32.6 33.0 99 GRAVE SPRINGS 8550 4.3 7.9 54 12.5 18.9 66 KIRWIN 9550 10.5 11.0 95 14.9 16.0 93 MARQUETTE 8760 2.0 8.9 22 9.8 15.2 64 MIDDLE POWDER 7760 4.4 11.1 40 11.3 17.3 65 OWL CREEK 8975 .0 2.3 0 7.0 9.9 71 POWDER RIVER PASS 9480 8.2 8.1 101 16.0 17.6 91 SHELL CREEK 9580 15.3 16.3 94 16.1 18.7 86 SYLVAN LAKE 8420 16.7 20.3 82 27.3 28.9 94 SYLVAN ROAD 7120 .4 2.7 15 19.1 23.5 81 TIMBER CREEK 7950 .1 2.2 5 8.1 12.8 63 YOUNTS PEAK 8350 14.8 15.4 96 19.3 20.1 96 ----- ----- Basin wide percent of average 80 84 SHOSHONE RIVER BLACKWATER 9780 27.4 28.8 95 24.8 26.5 94 EVENING STAR 9200 27.2 32.5 84 32.6 33.0 99 KIRWIN 9550 10.5 11.0 95 14.9 16.0 93 MARQUETTE 8760 2.0 8.9 22 9.8 15.2 64 SYLVAN LAKE 8420 16.7 20.3 82 27.3 28.9 94 SYLVAN ROAD 7120 .4 2.7 15 19.1 23.5 81 YOUNTS PEAK 8350 14.8 15.4 96 19.3 20.1 96 ----- ----- Basin wide percent of average 83 91 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .7 0 11.3 12.7 89 BIG GOOSE 7990 6.5 9.1 71 12.3 14.9 83 BONE SPRINGS DIV 9350 15.9 16.2 98 17.5 21.2 83 BURGESS JUNCTION 7880 9.2 10.2 90 13.4 16.9 79 CLOUD PEAK RESERVOIR 9860 15.0 14.8 101 17.5 20.2 87 DOME LAKE 8880 6.9 10.4 66 16.5 18.8 88 GRAVE SPRINGS 8550 4.3 7.9 54 12.5 18.9 66 HANSEN SAWMILL 8360 .0 2.2 0 12.0 13.0 92 MIDDLE POWDER 7760 4.4 11.1 40 11.3 17.3 65 POWDER RIVER PASS 9480 8.2 8.1 101 16.0 17.6 91 SUCKER CREEK 8880 9.7 10.2 95 17.7 19.7 90 TIE CREEK 6870 .1 1.3 8 13.5 15.1 89 ----- ----- Basin wide percent of average 78 83 BELLE FOURCHE BLIND PARK 6890 .0 .1 0* 11.6 15.5 75 COLE CANYON 5910 .0 3.0 0 10.2 -M * NORTH RAPID CREEK 6130 -M .6 * 9.7 13.3 73 ----- ----- Basin wide percent of average 0* 74 UPPER N. PLATTE RIVER COLUMBINE 9400 .1 13.1 1 -M 30.4 * DIVIDE PEAK 8800 .0 12.8 0 21.3 25.6 83 ELK RIVER 8700 .1 7.6 1 17.4 24.3 72 JOE WRIGHT 10120 8.1 23.8 34 23.0 32.1 72 NORTH FRENCH CREEK 10100 13.5 33.2 41 23.7 31.6 75 OLD BATTLE 10000 19.5 35.5 55 28.7 41.7 69 SAGE CREEK BASIN 7850 .1 -M * 13.0 -M * SOUTH BRUSH CREEK 8400 .0 6.5 0 14.6 21.6 68 TOWER 10500 25.3 51.5 49 32.8 47.2 69 WEBBER SPRINGS 9200 -M 18.1 * 21.2 32.6 65 WILLOW CREEK PASS 9540 2.1 11.2 19 11.0 17.0 65 ----- ----- Basin wide percent of average 35 71 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.0 23.1 26 17.0 28.7 59 CASPER MTN. 7900 .8 11.7 7 11.5 21.4 54 DEADMAN HILL 10220 8.8 18.0 49 14.5 22.5 64 DEER PARK 9700 12.9 17.2 75 20.7 28.6 72 LAPRELE CREEK 8320 .1 3.6 3 11.9 18.0 66 RENO HILL 8400 1.1 9.7 11 14.5 22.1 66 ROACH 9700 .3 13.4 2 15.0 24.1 62 SAND LAKE 10080 19.2 35.5 54 24.4 31.4 78 SOUTH PASS 9040 9.4 14.1 67 16.7 23.2 72 WINDY PEAK 7840 .1 1.7 6 10.1 15.0 67 ----- ----- Basin wide percent of average 40 67 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .6 50* 12.2 19.6 62 DIVIDE PEAK 8800 .0 12.8 0 21.3 25.6 83 OLD BATTLE 10000 19.5 35.5 55 28.7 41.7 69 SANDSTONE RS 8150 .1 3.8 3 16.4 23.1 71 WHISKEY PARK 8950 11.0 26.5 42 24.1 35.5 68 ----- ----- Basin wide percent of average 39 71 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.5 9.0 106 14.6 17.0 86 BLIND BULL SUM 8650 -M 24.9 * 22.1 26.4 84 EAST RIM DIVIDE 7930 8.4 9.2 91 12.6 14.8 85 ELKHART PARK G.S. 9400 9.6 9.4 102 14.2 17.3 82 GROS VENTRE SUMMIT 8775 9.6 9.9 97 15.4 16.3 94 KENDALL R.S. 7740 .0 3.7 0 15.4 17.4 89 LOOMIS PARK 8240 9.1 9.7 94 18.3 21.0 87 NEW FORK LAKE 8340 3.9 3.8 103 12.4 14.4 86 SNIDER BASIN 8250 .0 7.7 0 14.6 19.4 75 SPRING CREEK DIVIDE 9000 23.3 24.7 94 24.9 31.4 79 TRIPLE PEAK 8500 12.2 17.1 71 27.1 30.0 90 ----- ----- Basin wide percent of average 82 85 LOWER GREEN RIVER HAMS FORK 7840 .0 1.1 0* 11.4 15.7 73 HEWINTA 9500 .0 4.5 0 14.1 18.8 75 HICKERSON PARK 9150 .0 2.1 0 9.7 11.2 87 HOLE-IN-ROCK 9150 .0 1.7 0 9.3 10.8 86 INDIAN CREEK 9425 19.0 23.7 80 21.9 30.7 71 KELLEY R.S. 8180 4.8 9.1 53 18.6 24.7 75 STEEL CREEK PARK 10100 12.0 18.1 66 14.7 21.5 68 ----- ----- Basin wide percent of average 59 75 UPPER BEAR RIVER BUG LAKE 7950 5.9 10.9 54 19.4 23.6 82 HAYDEN FORK 9400 .3 7.3 4 19.8 26.5 75 KELLEY R.S. 8180 4.8 9.1 53 18.6 24.7 75 LILY LAKE 9050 .0 6.3 0 16.2 22.4 72 MONTE CRISTO 8960 14.4 22.7 63 28.0 31.9 88 SALT RIVER SUMMIT 7600 .0 4.9 0 16.2 22.6 72 TRIAL LAKE 9960 6.1 23.2 26 21.7 31.1 70 ----- ----- Basin wide percent of average 37 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 1971-2000. 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.