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 THURSDAY: MARCH 1 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.5 16.0 84 17.3 18.6 93 COTTONWOOD CREEK 7600 15.7 18.5 85 18.7 23.0 81 GRANITE CREEK 6770 10.9 16.1 68 14.0 17.4 80 GRASSY LAKE 7265 24.0 29.5 81 30.4 31.0 98 GROS VENTRE SUMMIT 8750 8.5 11.5 74 10.1 10.8 94 LEWIS LAKE DIVIDE 7850 23.1 29.7 78 27.7 31.5 88 PHILLIPS BENCH 8200 16.3 23.9 68 20.3 24.6 83 SALT RIVER SUMMIT 7600 9.6 12.2 79 12.0 15.8 76 SNAKE RIVER STATION 6920 13.3 16.6 80 20.7 19.5 106 SPRING CREEK DIVIDE 9000 15.8 22.2 71 16.4 22.5 73 THUMB DIVIDE 7980 11.6 15.4 75 13.0 16.0 81 TOGWOTEE PASS 9580 15.8 20.7 76 17.8 20.7 86 TWO OCEAN PLATEAU 9240 21.3 23.3 91 19.9 23.4 85 WILLOW CREEK 8450 19.9 25.4 78 24.4 27.0 90 ----- ----- Basin wide percent of average 78 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.1 19.7 82 15.6 17.1 91 BLACK BEAR 8170 28.7 32.9 87 31.1 33.3 93 CANYON 8090 10.3 11.3 91 13.3 13.0 102 FISHER CREEK 9100 26.1 29.6 88 26.4 30.6 86 MADISON PLATEAU 7750 16.2 20.9 78 19.6 22.1 89 NORTHEAST ENTRANCE 7350 7.7 9.7 79 11.3 10.8 105 PARKER PEAK 9400 16.1 18.2 88 14.9 13.7 109 SYLVAN LAKE 8420 13.5 18.8 72 18.8 17.9 105 THUMB DIVIDE 7980 11.6 15.4 75 13.0 16.0 81 TWO OCEAN PLATEAU 9240 21.3 23.3 91 19.9 23.4 85 WHISKEY CREEK 6800 11.1 14.4 77 15.7 17.4 90 WHITE MILL 8700 16.4 20.3 81 17.4 22.7 77 WOLVERINE 7650 8.1 10.6 76 9.8 11.2 88 ----- ----- Basin wide percent of average 83 91 WIND RIVER BURROUGHS CREEK 8750 10.8 12.6 86 12.4 13.7 91 COLD SPRINGS 9630 4.8 7.2 67 6.2 8.4 74 DEER PARK 9700 9.5 14.4 66 12.7 17.8 71 HOBBS PARK 10100 8.2 11.9 69 8.0 9.9 81 LITTLE WARM 9370 6.6 9.5 69 7.8 10.9 72 SOUTH PASS 9040 10.1 14.0 72 11.3 15.0 75 ST. LAWRENCE ALT 8620 4.1 5.9 69 5.4 7.0 77 TOGWOTEE PASS 9580 15.8 20.7 76 17.8 20.7 86 TOWNSEND CREEK 8700 5.4 6.9 78 8.1 8.9 91 ----- ----- Basin wide percent of average 73 80 BIGHORN BASIN BALD MTN. 9380 15.1 16.0 94 11.6 14.1 82 BEAR TRAP MEADOW 8200 4.6 4.3 107 5.2 6.4 81 BLACKWATER 9780 17.2 20.4 84 16.4 17.2 95 BONE SPRINGS DIV 9350 13.6 13.2 103 12.0 11.6 103 EVENING STAR 9200 19.1 25.0 76 22.6 21.8 104 GRAVE SPRINGS 8550 5.4 7.3 74 5.6 7.8 72 KIRWIN 9550 7.7 9.1 85 9.1 9.2 99 MARQUETTE 8760 2.1 6.9 30 6.2 7.5 83 MIDDLE POWDER 7760 7.4 9.0 82 6.5 9.6 68 OWL CREEK 8975 4.7 4.1 115 5.2 4.4 118 POWDER RIVER PASS 9480 7.5 8.7 86 8.5 10.0 85 SHELL CREEK 9580 11.7 11.8 99 9.3 10.8 86 SYLVAN LAKE 8420 13.5 18.8 72 18.8 17.9 105 SYLVAN ROAD 7120 8.4 11.4 74 14.4 15.6 92 TIMBER CREEK 7950 2.2 4.2 52 5.6 5.4 104 YOUNTS PEAK 8350 10.0 14.6 68 12.6 13.6 93 ----- ----- Basin wide percent of average 81 93 SHOSHONE RIVER BLACKWATER 9780 17.2 20.4 84 16.4 17.2 95 EVENING STAR 9200 19.1 25.0 76 22.6 21.8 104 KIRWIN 9550 7.7 9.1 85 9.1 9.2 99 MARQUETTE 8760 2.1 6.9 30 6.2 7.5 83 SYLVAN LAKE 8420 13.5 18.8 72 18.8 17.9 105 SYLVAN ROAD 7120 8.4 11.4 74 14.4 15.6 92 YOUNTS PEAK 8350 10.0 14.6 68 12.6 13.6 93 ----- ----- Basin wide percent of average 73 97 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.6 4.3 107 5.2 6.4 81 BIG GOOSE 7990 5.3 7.7 69 6.6 6.8 97 BONE SPRINGS DIV 9350 13.6 13.2 103 12.0 11.6 103 BURGESS JUNCTION 7880 8.6 9.0 96 9.2 9.5 97 CLOUD PEAK RESERVOIR 9860 9.3 10.0 93 7.7 9.8 79 DOME LAKE 8880 8.2 9.5 86 9.3 10.2 91 GRAVE SPRINGS 8550 5.4 7.3 74 5.6 7.8 72 HANSEN SAWMILL 8360 2.8 5.2 54 4.1 6.3 65 MIDDLE POWDER 7760 7.4 9.0 82 6.5 9.6 68 POWDER RIVER PASS 9480 7.5 8.7 86 8.5 10.0 85 SUCKER CREEK 8880 10.1 9.1 111 11.2 10.5 107 TIE CREEK 6870 4.1 4.9 84 8.4 7.9 106 ----- ----- Basin wide percent of average 89 89 BELLE FOURCHE BLIND PARK 6890 5.1 7.1 72 8.3 9.3 89 COLE CANYON 5910 4.9 5.1 96 6.9 -M * NORTH RAPID CREEK 6130 5.5 6.8 81 6.7 7.5 89 ----- ----- Basin wide percent of average 82 89 UPPER N. PLATTE RIVER COLUMBINE 9160 16.9 21.9 77 17.8 20.9 85 DIVIDE PEAK 8860 15.4 15.6 99 16.2 17.0 95 ELK RIVER 8700 15.2 16.1 94 14.9 16.1 93 JOE WRIGHT 10120 17.1 17.3 99 18.1 20.2 90 NORTH FRENCH CREEK 10130 20.2 22.7 89 20.1 20.2 100 OLD BATTLE 9920 20.7 26.3 79 24.5 28.5 86 SAGE CREEK BASIN 7850 10.8 9.0 120 10.7 9.9 108 SOUTH BRUSH CREEK 8440 11.1 10.0 111 12.3 13.3 92 TOWER 10500 26.7 37.6 71 25.8 31.9 81 WEBBER SPRINGS 9250 15.9 21.3 75 20.1 22.1 91 WILLOW CREEK PASS 9540 11.8 9.6 123 11.2 10.4 108 ----- ----- Basin wide percent of average 88 91 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 15.9 19.0 84 16.1 17.5 92 CASPER MTN. 7850 9.0 11.3 80 9.9 11.1 89 DEADMAN HILL 10220 13.9 13.0 107 14.9 13.3 112 DEER PARK 9700 9.5 14.4 66 12.7 17.8 71 LAPRELE CREEK 8375 7.0 8.9 79 8.0 10.0 80 RENO HILL 8500 10.6 10.4 102 11.3 11.5 98 ROACH 9700 14.0 13.9 101 16.0 14.9 107 SAND LAKE 10050 20.3 25.2 81 19.7 19.3 102 SOUTH PASS 9040 10.1 14.0 72 11.3 15.0 75 WINDY PEAK 7900 6.6 6.0 110 7.9 8.5 93 ----- ----- Basin wide percent of average 86 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.0 9.7 82 11.2 12.3 91 DIVIDE PEAK 8860 15.4 15.6 99 16.2 17.0 95 OLD BATTLE 9920 20.7 26.3 79 24.5 28.5 86 SANDSTONE RS 8150 9.8 12.5 78 13.3 15.7 85 WHISKEY PARK 8950 18.1 23.8 76 20.6 23.4 88 ----- ----- Basin wide percent of average 82 89 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.2 12.1 84 9.7 11.3 86 BLIND BULL SUM 8900 18.2 23.1 79 14.6 19.1 76 EAST RIM DIVIDE 7930 7.1 11.0 65 8.2 10.2 80 ELKHART PARK G.S. 9400 7.8 11.1 70 9.4 10.9 86 GROS VENTRE SUMMIT 8750 8.5 11.5 74 10.1 10.8 94 KENDALL R.S. 7740 8.9 12.4 72 10.5 12.5 84 LOOMIS PARK 8240 9.8 14.5 68 12.2 14.8 82 NEW FORK LAKE 8340 7.3 9.6 76 7.7 9.6 80 SNIDER BASIN 8060 9.0 12.4 73 9.9 13.7 72 SPRING CREEK DIVIDE 9000 15.8 22.2 71 16.4 22.5 73 TRIPLE PEAK 8500 15.8 20.9 76 18.7 20.7 90 ----- ----- Basin wide percent of average 74 82 LOWER GREEN RIVER HAMS FORK 7840 8.1 11.0 74 8.2 10.4 79 HEWINTA 9500 6.8 9.1 75 11.1 11.6 96 HICKERSON PARK 9100 5.5 5.8 95 8.1 6.2 131 HOLE-IN-ROCK 9150 6.0 5.7 105 7.8 5.8 134 INDIAN CREEK 9425 17.3 22.3 78 15.1 21.1 72 KELLEY R.S. 8180 10.9 14.0 78 13.3 17.2 77 STEEL CREEK PARK 10100 10.1 12.7 80 11.6 12.9 90 ----- ----- Basin wide percent of average 80 88 UPPER BEAR RIVER BUG LAKE 7950 12.1 17.1 71 13.0 16.2 80 HAYDEN FORK 9100 10.2 13.2 77 16.9 17.1 99 KELLEY R.S. 8180 10.9 14.0 78 13.3 17.2 77 LILY LAKE 9050 10.2 10.8 94 12.7 14.3 89 MONTE CRISTO 8960 17.5 24.7 71 18.0 21.1 85 SALT RIVER SUMMIT 7600 9.6 12.2 79 12.0 15.8 76 TRIAL LAKE 9960 13.1 20.6 64 16.8 20.5 82 ----- ----- Basin wide percent of average 74 84 ----------------------------------------------------------------------------- -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.