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: FEBRUARY 25 , 2004 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.8 15.5 108 17.8 18.1 98 COTTONWOOD CREEK 7600 16.2 17.8 91 17.0 22.4 76 GRANITE CREEK 6770 14.4 15.6 92 15.0 16.9 89 GRASSY LAKE 7265 31.4 28.6 110 29.6 30.1 98 GROS VENTRE SUMMIT 8750 8.6 11.2 77 8.3 10.5 79 LEWIS LAKE DIVIDE 7850 28.0 28.8 97 28.2 30.6 92 PHILLIPS BENCH 8200 20.4 23.1 88 20.4 23.9 85 SALT RIVER SUMMIT 7600 10.8 11.8 92 11.6 15.3 76 SNAKE RIVER STATION 6920 17.8 16.0 111 16.4 18.9 87 SPRING CREEK DIVIDE 9000 17.0 21.5 79 16.2 21.9 74 THUMB DIVIDE 7980 15.7 14.9 105 14.5 15.5 94 TOGWOTEE PASS 9580 16.1 20.2 80 16.2 20.1 81 TWO OCEAN PLATEAU 9240 22.1 22.7 97 20.0 22.7 88 WILLOW CREEK 8450 22.8 24.6 93 23.8 26.3 90 ----- ----- Basin wide percent of average 95 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 15.8 19.3 82 15.7 16.7 94 BLACK BEAR 8170 35.4 31.8 111 -M 32.3 * CANYON 8090 10.4 11.0 95 11.4 12.7 90 FISHER CREEK 9100 25.1 28.7 87 24.8 29.7 84 MADISON PLATEAU 7750 21.4 20.2 106 20.2 21.4 94 NORTHEAST ENTRANCE 7350 6.2 9.4 66 8.6 10.5 82 PARKER PEAK 9400 14.6 17.7 82 11.6 13.3 87 SYLVAN LAKE 8420 13.8 18.2 76 16.3 17.5 93 THUMB DIVIDE 7980 15.7 14.9 105 14.5 15.5 94 TWO OCEAN PLATEAU 9240 22.1 22.7 97 20.0 22.7 88 WHISKEY CREEK 6800 15.5 13.9 112 17.3 16.9 102 WHITE MILL 8700 15.0 19.7 76 16.3 22.1 74 WOLVERINE 7650 7.2 10.3 70 7.3 10.9 67 ----- ----- Basin wide percent of average 92 88 WIND RIVER BURROUGHS CREEK 8750 9.0 12.2 74 10.0 13.4 75 COLD SPRINGS 9630 4.3 7.0 61 4.5 8.2 55 DEER PARK 9700 12.5 14.2 88 14.4 17.3 83 HOBBS PARK 10100 9.2 11.6 79 8.3 9.7 86 LITTLE WARM 9370 6.1 9.2 66 7.0 10.6 66 SOUTH PASS 9040 12.6 13.6 93 12.6 14.6 86 ST. LAWRENCE ALT 8620 4.1 5.7 72 4.6 6.8 68 TOGWOTEE PASS 9580 16.1 20.2 80 16.2 20.1 81 TOWNSEND CREEK 8700 7.0 6.7 104 7.7 8.7 89 ----- ----- Basin wide percent of average 81 78 BIGHORN BASIN BALD MTN. 9380 11.7 15.6 75 10.3 13.8 75 BEAR TRAP MEADOW 8200 4.8 4.2 114 4.5 6.3 71 BLACKWATER 9780 16.7 19.8 84 15.1 16.8 90 BONE SPRINGS DIV 9350 9.9 12.8 77 10.6 11.3 94 EVENING STAR 9200 17.4 24.2 72 20.1 21.2 95 GRAVE SPRINGS 8550 7.2 7.1 101 6.5 7.6 86 KIRWIN 9550 4.8 8.9 54 5.8 9.0 64 MARQUETTE 8760 5.3 6.7 79 5.6 7.3 77 MIDDLE POWDER 7760 8.0 8.7 92 6.4 9.4 68 OWL CREEK 8975 2.9 4.0 72 2.8 4.3 65 POWDER RIVER PASS 9480 7.6 8.5 89 8.4 9.8 86 SHELL CREEK 9580 10.1 11.5 88 9.5 10.6 90 SYLVAN LAKE 8420 13.8 18.2 76 16.3 17.5 93 SYLVAN ROAD 7120 9.4 11.1 85 12.1 15.3 79 TIMBER CREEK 7950 2.8 4.1 68 3.5 5.3 66 YOUNTS PEAK 8350 6.4 14.2 45 9.4 13.3 71 ----- ----- Basin wide percent of average 77 82 SHOSHONE RIVER BLACKWATER 9780 16.7 19.8 84 15.1 16.8 90 EVENING STAR 9200 17.4 24.2 72 20.1 21.2 95 KIRWIN 9550 4.8 8.9 54 5.8 9.0 64 MARQUETTE 8760 5.3 6.7 79 5.6 7.3 77 SYLVAN LAKE 8420 13.8 18.2 76 16.3 17.5 93 SYLVAN ROAD 7120 9.4 11.1 85 12.1 15.3 79 YOUNTS PEAK 8350 6.4 14.2 45 9.4 13.3 71 ----- ----- Basin wide percent of average 72 84 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.8 4.2 114 4.5 6.3 71 BIG GOOSE 7990 5.7 7.4 77 6.1 6.6 92 BONE SPRINGS DIV 9350 9.9 12.8 77 10.6 11.3 94 BURGESS JUNCTION 7880 7.3 8.7 84 7.1 9.3 76 CLOUD PEAK RESERVOIR 9860 9.3 9.7 96 7.9 9.6 82 DOME LAKE 8880 7.7 9.3 83 7.8 10.0 78 GRAVE SPRINGS 8550 7.2 7.1 101 6.5 7.6 86 HANSEN SAWMILL 8360 4.5 5.0 90 4.3 6.2 69 MIDDLE POWDER 7760 8.0 8.7 92 6.4 9.4 68 POWDER RIVER PASS 9480 7.6 8.5 89 8.4 9.8 86 SUCKER CREEK 8880 7.7 8.8 88 8.8 10.3 85 TIE CREEK 6870 4.4 4.8 92 5.8 7.7 75 ----- ----- Basin wide percent of average 89 81 BELLE FOURCHE BLIND PARK 6890 4.3 6.8 63 6.5 9.1 71 COLE CANYON 5910 3.5 4.9 71 4.6 -M * NORTH RAPID CREEK 6130 3.9 6.5 60 5.3 7.3 73 ----- ----- Basin wide percent of average 64 72 UPPER N. PLATTE RIVER COLUMBINE 9160 16.6 21.2 78 17.8 20.3 88 DIVIDE PEAK 8860 15.1 15.2 99 15.4 16.5 93 ELK RIVER 8700 14.4 15.6 92 15.5 15.6 99 JOE WRIGHT 10120 10.6 16.8 63 13.0 19.6 66 NORTH FRENCH CREEK 10130 17.1 22.0 78 16.0 19.7 81 OLD BATTLE 9920 23.6 25.4 93 25.3 27.6 92 SAGE CREEK BASIN 7850 11.8 8.8 134 11.6 9.6 121 SOUTH BRUSH CREEK 8440 7.5 9.6 78 8.3 13.0 64 TOWER 10500 28.4 36.5 78 29.2 31.0 94 WEBBER SPRINGS 9250 18.4 20.5 90 20.0 21.5 93 WILLOW CREEK PASS 9540 7.6 9.3 82 6.9 10.1 68 ----- ----- Basin wide percent of average 85 88 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 12.1 18.5 65 11.4 17.0 67 CASPER MTN. 7850 8.6 11.0 78 7.0 10.8 65 DEADMAN HILL 10220 8.2 12.6 65 11.0 12.9 85 DEER PARK 9700 12.5 14.2 88 14.4 17.3 83 LAPRELE CREEK 8375 6.5 8.6 76 7.0 9.7 72 RENO HILL 8500 9.2 10.1 91 8.6 11.2 77 ROACH 9700 12.1 13.5 90 13.4 14.4 93 SAND LAKE 10050 16.8 24.3 69 16.3 18.8 87 SOUTH PASS 9040 12.6 13.6 93 12.6 14.6 86 WINDY PEAK 7900 4.2 5.8 72 5.0 8.3 60 ----- ----- Basin wide percent of average 78 79 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.5 9.4 133 12.0 12.0 100 DIVIDE PEAK 8860 15.1 15.2 99 15.4 16.5 93 OLD BATTLE 9920 23.6 25.4 93 25.3 27.6 92 SANDSTONE RS 8150 9.4 12.1 78 15.3 15.2 101 WHISKEY PARK 8950 20.6 23.0 90 19.5 22.8 86 ----- ----- Basin wide percent of average 95 93 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.9 11.7 85 9.5 11.0 86 BLIND BULL SUM 8900 17.7 22.4 79 14.0 18.6 75 EAST RIM DIVIDE 7930 8.3 10.6 78 8.5 9.9 86 ELKHART PARK G.S. 9400 9.1 10.8 84 9.5 10.6 90 GROS VENTRE SUMMIT 8750 8.6 11.2 77 8.3 10.5 79 KENDALL R.S. 7740 11.0 12.0 92 11.1 12.1 92 LOOMIS PARK 8240 12.4 14.0 89 12.7 14.4 88 NEW FORK LAKE 8340 7.9 9.3 85 7.3 9.4 78 SNIDER BASIN 8060 9.7 12.0 81 9.8 13.3 74 SPRING CREEK DIVIDE 9000 17.0 21.5 79 16.2 21.9 74 TRIPLE PEAK 8500 16.2 20.2 80 17.4 20.1 87 ----- ----- Basin wide percent of average 82 82 LOWER GREEN RIVER HAMS FORK 7840 8.5 10.6 80 7.6 10.1 75 HEWINTA 9500 7.6 8.7 87 8.7 11.3 77 HICKERSON PARK 9100 5.2 5.6 93 7.3 6.1 120 HOLE-IN-ROCK 9150 5.0 5.5 91 5.5 5.7 96 INDIAN CREEK 9425 17.2 21.6 80 14.8 20.5 72 KELLEY R.S. 8180 11.6 13.5 86 12.5 16.7 75 STEEL CREEK PARK 10100 9.2 12.2 75 9.5 12.5 76 ----- ----- Basin wide percent of average 83 79 UPPER BEAR RIVER BUG LAKE 7950 14.7 16.5 89 14.2 15.7 90 HAYDEN FORK 9100 9.1 12.7 72 12.8 16.6 77 KELLEY R.S. 8180 11.6 13.5 86 12.5 16.7 75 LILY LAKE 9050 8.2 10.4 79 10.0 13.9 72 MONTE CRISTO 8960 19.3 23.8 81 18.7 20.5 91 SALT RIVER SUMMIT 7600 10.8 11.8 92 11.6 15.3 76 TRIAL LAKE 9960 15.4 19.9 77 16.3 19.8 82 ----- ----- Basin wide percent of average 82 81 ----------------------------------------------------------------------------- -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.