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: APRIL 7 , 2004 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.5 17.5 60 19.2 22.2 86 COTTONWOOD CREEK 7600 14.8 24.0 62 20.2 28.6 71 GRANITE CREEK 6770 12.0 17.9 67 17.0 20.6 83 GRASSY LAKE 7265 29.1 36.5 80 33.0 37.3 88 GROS VENTRE SUMMIT 8750 9.5 14.5 66 10.4 13.5 77 LEWIS LAKE DIVIDE 7850 27.1 36.2 75 30.4 38.1 80 PHILLIPS BENCH 8200 -M 29.8 * -M 30.1 * SALT RIVER SUMMIT 7600 8.6 14.5 59 14.1 19.5 72 SNAKE RIVER STATION 6920 11.2 18.5 61 18.2 23.1 79 SPRING CREEK DIVIDE 9000 20.8 27.6 75 19.7 27.5 72 THUMB DIVIDE 7980 11.3 19.0 59 15.8 19.7 80 TOGWOTEE PASS 9580 18.1 25.8 70 18.9 25.7 74 TWO OCEAN PLATEAU 9240 23.6 29.3 81 22.1 28.8 77 WILLOW CREEK 8450 19.5 31.2 62 28.7 33.6 85 ----- ----- Basin wide percent of average 69 79 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.8 24.4 77 18.6 20.9 89 BLACK BEAR 8170 39.3 40.3 98 37.2 41.9 89 CANYON 8090 9.0 13.9 65 12.8 16.0 80 FISHER CREEK 9100 27.7 36.1 77 28.5 37.8 75 MADISON PLATEAU 7750 24.1 25.8 93 23.6 27.8 85 NORTHEAST ENTRANCE 7350 .4 11.0 4 9.8 13.2 74 PARKER PEAK 9400 14.8 22.5 66 13.4 17.0 79 SYLVAN LAKE 8420 12.1 23.4 52 18.1 21.8 83 THUMB DIVIDE 7980 11.3 19.0 59 15.8 19.7 80 TWO OCEAN PLATEAU 9240 23.6 29.3 81 22.1 28.8 77 WHISKEY CREEK 6800 15.2 17.6 86 20.0 21.8 92 WHITE MILL 8700 17.9 25.2 71 19.3 28.1 69 WOLVERINE 7650 .5 11.3 4 9.0 13.4 67 ----- ----- Basin wide percent of average 72 81 WIND RIVER BURROUGHS CREEK 8750 10.9 14.9 73 12.0 17.0 71 COLD SPRINGS 9630 .7 8.2 9 6.8 11.3 60 DEER PARK 9700 14.0 17.1 82 17.7 23.1 77 HOBBS PARK 10100 11.2 15.8 71 11.1 13.7 81 LITTLE WARM 9370 5.4 12.2 44 8.4 14.2 59 SOUTH PASS 9040 14.6 17.1 85 15.4 19.4 79 ST. LAWRENCE ALT 8620 2.5 7.4 34 6.9 9.5 73 TOGWOTEE PASS 9580 18.1 25.8 70 18.9 25.7 74 TOWNSEND CREEK 8700 7.9 9.2 86 10.2 12.5 82 ----- ----- Basin wide percent of average 67 73 BIGHORN BASIN BALD MTN. 9380 16.9 20.8 81 15.4 18.3 84 BEAR TRAP MEADOW 8200 .1 5.0 2 5.7 8.8 65 BLACKWATER 9780 17.6 25.7 68 17.1 21.5 80 BONE SPRINGS DIV 9350 14.3 17.0 84 15.3 15.4 99 EVENING STAR 9200 18.4 30.9 60 23.5 26.4 89 GRAVE SPRINGS 8550 7.9 10.0 79 8.8 10.4 85 KIRWIN 9550 5.5 11.8 47 7.5 11.9 63 MARQUETTE 8760 6.1 9.7 63 7.5 10.6 71 MIDDLE POWDER 7760 8.6 12.7 68 7.3 13.1 56 OWL CREEK 8975 3.0 5.4 56 4.4 6.4 69 POWDER RIVER PASS 9480 6.4 11.3 57 10.8 13.1 82 SHELL CREEK 9580 13.1 15.4 85 12.5 14.1 89 SYLVAN LAKE 8420 12.1 23.4 52 18.1 21.8 83 SYLVAN ROAD 7120 -M 12.6 * 12.6 18.3 69 TIMBER CREEK 7950 2.4 5.8 41 5.3 8.0 66 YOUNTS PEAK 8350 7.8 17.6 44 10.9 16.8 65 ----- ----- Basin wide percent of average 63 78 SHOSHONE RIVER BLACKWATER 9780 17.6 25.7 68 17.1 21.5 80 EVENING STAR 9200 18.4 30.9 60 23.5 26.4 89 KIRWIN 9550 5.5 11.8 47 7.5 11.9 63 MARQUETTE 8760 6.1 9.7 63 7.5 10.6 71 SYLVAN LAKE 8420 12.1 23.4 52 18.1 21.8 83 SYLVAN ROAD 7120 -M 12.6 * 12.6 18.3 69 YOUNTS PEAK 8350 7.8 17.6 44 10.9 16.8 65 ----- ----- Basin wide percent of average 57 76 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 5.0 2 5.7 8.8 65 BIG GOOSE 7990 -M 11.4 * 8.6 9.4 91 BONE SPRINGS DIV 9350 14.3 17.0 84 15.3 15.4 99 BURGESS JUNCTION 7880 9.4 12.3 76 9.8 12.8 77 CLOUD PEAK RESERVOIR 9860 11.5 14.3 80 11.3 13.7 82 DOME LAKE 8880 8.8 13.2 67 10.9 13.9 78 GRAVE SPRINGS 8550 7.9 10.0 79 8.8 10.4 85 HANSEN SAWMILL 8360 1.2 6.4 19 6.6 8.8 75 MIDDLE POWDER 7760 8.6 12.7 68 7.3 13.1 56 POWDER RIVER PASS 9480 6.4 11.3 57 10.8 13.1 82 SUCKER CREEK 8880 9.1 12.5 73 12.4 14.4 86 TIE CREEK 6870 2.9 5.8 50 9.8 10.6 92 ----- ----- Basin wide percent of average 67 81 BELLE FOURCHE BLIND PARK 6890 .0 8.2 0 9.5 11.7 81 COLE CANYON 5910 .1 6.0 2 7.0 -M * NORTH RAPID CREEK 6130 .2 8.5 2 7.6 9.2 83 ----- ----- Basin wide percent of average 1 82 UPPER N. PLATTE RIVER COLUMBINE 9160 13.2 24.9 53 23.1 26.1 89 DIVIDE PEAK 8860 14.5 20.4 71 17.9 21.5 83 ELK RIVER 8700 -M 19.6 * 18.5 20.4 91 JOE WRIGHT 10120 14.6 22.4 65 19.2 25.9 74 NORTH FRENCH CREEK 10130 19.7 30.8 64 20.3 25.8 79 OLD BATTLE 9920 27.3 33.4 82 30.0 35.8 84 SAGE CREEK BASIN 7850 2.0 11.8 17 12.7 12.5 102 SOUTH BRUSH CREEK 8440 3.8 13.2 29 11.4 17.1 67 TOWER 10500 32.6 47.4 69 35.9 39.9 90 WEBBER SPRINGS 9250 17.3 26.3 66 23.3 27.7 84 WILLOW CREEK PASS 9540 10.8 12.7 85 9.7 13.5 72 ----- ----- Basin wide percent of average 64 83 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 14.6 25.0 58 15.6 23.1 68 CASPER MTN. 7850 8.8 15.5 57 9.6 15.4 62 DEADMAN HILL 10220 12.2 17.2 71 14.8 17.8 83 DEER PARK 9700 14.0 17.1 82 17.7 23.1 77 LAPRELE CREEK 8375 2.5 10.7 23 8.3 13.4 62 RENO HILL 8500 10.1 15.0 67 11.9 16.0 74 ROACH 9700 12.8 17.7 72 16.3 19.4 84 SAND LAKE 10050 21.2 33.7 63 21.3 25.2 85 SOUTH PASS 9040 14.6 17.1 85 15.4 19.4 79 WINDY PEAK 7900 1.4 8.1 17 6.2 11.2 55 ----- ----- Basin wide percent of average 63 75 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.4 10.0 14 13.6 16.4 83 DIVIDE PEAK 8860 14.5 20.4 71 17.9 21.5 83 OLD BATTLE 9920 27.3 33.4 82 30.0 35.8 84 SANDSTONE RS 8150 6.9 14.2 49 17.5 19.4 90 WHISKEY PARK 8950 20.6 30.5 68 23.7 29.8 80 ----- ----- Basin wide percent of average 65 84 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.8 15.0 79 11.9 14.0 85 BLIND BULL SUM 8900 18.9 28.6 66 16.0 23.0 70 EAST RIM DIVIDE 7930 8.7 13.6 64 10.2 12.5 82 ELKHART PARK G.S. 9400 9.9 13.8 72 11.6 13.9 83 GROS VENTRE SUMMIT 8750 9.5 14.5 66 10.4 13.5 77 KENDALL R.S. 7740 7.6 14.2 54 12.5 15.1 83 LOOMIS PARK 8240 10.4 17.3 60 15.1 18.1 83 NEW FORK LAKE 8340 7.0 11.3 62 8.8 11.8 75 SNIDER BASIN 8060 9.7 14.8 66 11.7 16.7 70 SPRING CREEK DIVIDE 9000 20.8 27.6 75 19.7 27.5 72 TRIPLE PEAK 8500 14.1 25.5 55 20.9 25.8 81 ----- ----- Basin wide percent of average 65 78 LOWER GREEN RIVER HAMS FORK 7840 3.1 11.1 28 9.2 12.8 72 HEWINTA 9500 2.5 12.2 20 10.6 15.3 69 HICKERSON PARK 9100 1.5 8.0 19 8.7 8.4 104 HOLE-IN-ROCK 9150 .3 7.2 4 7.0 7.9 89 INDIAN CREEK 9425 20.0 28.8 69 18.3 26.5 69 KELLEY R.S. 8180 11.1 17.1 65 14.8 21.2 70 STEEL CREEK PARK 10100 11.7 16.5 71 12.6 17.1 74 ----- ----- Basin wide percent of average 50 74 UPPER BEAR RIVER BUG LAKE 7950 11.3 21.4 53 15.7 20.1 78 HAYDEN FORK 9100 2.1 16.6 13 15.7 22.0 71 KELLEY R.S. 8180 11.1 17.1 65 14.8 21.2 70 LILY LAKE 9050 3.9 13.9 28 12.3 18.3 67 MONTE CRISTO 8960 19.4 30.3 64 23.3 26.6 88 SALT RIVER SUMMIT 7600 8.6 14.5 59 14.1 19.5 72 TRIAL LAKE 9960 15.6 25.8 60 19.7 26.0 76 ----- ----- Basin wide percent of average 52 75 ----------------------------------------------------------------------------- -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.