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 23 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.1 15.3 73 12.6 17.8 71 COTTONWOOD CREEK 7600 14.2 17.4 82 16.2 22.1 73 GRANITE CREEK 6770 11.0 15.3 72 13.5 16.6 81 GRASSY LAKE 7265 20.7 28.1 74 21.8 29.7 73 GROS VENTRE SUMMIT 8750 9.0 11.0 82 8.7 10.4 84 LEWIS LAKE DIVIDE 7850 19.1 28.3 67 19.2 30.1 64 PHILLIPS BENCH 8200 18.5 22.7 81 18.7 23.5 80 SALT RIVER SUMMIT 7600 10.3 11.6 89 13.6 15.1 90 SNAKE RIVER STATION 6920 10.2 15.7 65 12.5 18.7 67 SPRING CREEK DIVIDE 9000 19.6 21.1 93 18.9 21.6 87 THUMB DIVIDE 7980 10.9 14.6 75 10.7 15.3 70 TOGWOTEE PASS 9580 13.2 19.9 66 13.2 19.9 66 TWO OCEAN PLATEAU 9240 18.5 22.4 83 15.4 22.3 69 WILLOW CREEK 8450 19.6 24.2 81 22.4 25.9 86 ----- ----- Basin wide percent of average 77 75 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 11.5 19.1 60 10.3 16.4 63 BLACK BEAR 8170 27.6 31.3 88 26.0 31.8 82 CANYON 8090 7.5 10.8 69 8.9 12.5 71 FISHER CREEK 9100 19.7 28.3 70 19.1 29.3 65 MADISON PLATEAU 7750 -M 19.9 * -M 21.1 * NORTHEAST ENTRANCE 7350 4.4 9.3 47 5.7 10.4 55 PARKER PEAK 9400 12.1 17.4 70 9.9 13.1 76 SYLVAN LAKE 8420 12.0 17.9 67 13.6 17.2 79 THUMB DIVIDE 7980 10.9 14.6 75 10.7 15.3 70 TWO OCEAN PLATEAU 9240 18.5 22.4 83 15.4 22.3 69 WHISKEY CREEK 6800 10.9 13.7 80 13.8 16.6 83 WHITE MILL 8700 13.0 19.4 67 12.3 21.8 56 WOLVERINE 7650 6.3 10.2 62 6.1 10.8 56 ----- ----- Basin wide percent of average 72 70 WIND RIVER BURROUGHS CREEK 8750 7.7 12.0 64 7.7 13.2 58 COLD SPRINGS 9630 6.1 6.9 88 6.7 8.1 83 DEER PARK 9700 19.4 14.1 138 21.6 17.1 126 HOBBS PARK 10100 12.2 11.4 107 11.0 9.5 116 LITTLE WARM 9370 6.4 9.1 70 7.1 10.5 68 SOUTH PASS 9040 16.9 13.4 126 17.5 14.4 122 ST. LAWRENCE ALT 8620 5.7 5.6 102 6.8 6.7 101 TOGWOTEE PASS 9580 13.2 19.9 66 13.2 19.9 66 TOWNSEND CREEK 8700 8.4 6.6 127 11.5 8.6 134 ----- ----- Basin wide percent of average 97 95 BIGHORN BASIN BALD MTN. 9380 11.7 15.4 76 10.7 13.6 79 BEAR TRAP MEADOW 8200 3.1 4.1 76 5.3 6.2 85 BLACKWATER 9780 11.5 19.5 59 10.7 16.6 64 BONE SPRINGS DIV 9350 10.5 12.6 83 10.2 11.2 91 EVENING STAR 9200 13.7 23.8 58 15.2 20.9 73 GRAVE SPRINGS 8550 4.5 7.0 64 6.2 7.5 83 KIRWIN 9550 5.3 8.8 60 6.0 8.9 67 MARQUETTE 8760 2.7 6.6 41 4.5 7.2 62 MIDDLE POWDER 7760 4.6 8.6 53 5.4 9.3 58 OWL CREEK 8975 2.8 3.9 72 3.1 4.2 74 POWDER RIVER PASS 9480 8.6 8.4 102 9.5 9.6 99 SHELL CREEK 9580 10.3 11.3 91 9.3 10.5 89 SYLVAN LAKE 8420 12.0 17.9 67 13.6 17.2 79 SYLVAN ROAD 7120 7.2 10.9 66 10.2 15.1 68 TIMBER CREEK 7950 1.4 4.1 34 2.2 5.2 42 YOUNTS PEAK 8350 8.4 14.0 60 8.4 13.1 64 ----- ----- Basin wide percent of average 67 74 SHOSHONE RIVER BLACKWATER 9780 11.5 19.5 59 10.7 16.6 64 EVENING STAR 9200 13.7 23.8 58 15.2 20.9 73 KIRWIN 9550 5.3 8.8 60 6.0 8.9 67 MARQUETTE 8760 2.7 6.6 41 4.5 7.2 62 SYLVAN LAKE 8420 12.0 17.9 67 13.6 17.2 79 SYLVAN ROAD 7120 7.2 10.9 66 10.2 15.1 68 YOUNTS PEAK 8350 8.4 14.0 60 8.4 13.1 64 ----- ----- Basin wide percent of average 60 69 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.1 4.1 76 5.3 6.2 85 BIG GOOSE 7990 5.1 7.3 70 6.4 6.6 97 BONE SPRINGS DIV 9350 10.5 12.6 83 10.2 11.2 91 BURGESS JUNCTION 7880 5.8 8.6 67 7.3 9.2 79 CLOUD PEAK RESERVOIR 9860 9.9 9.5 104 8.1 9.5 85 DOME LAKE 8880 7.6 9.2 83 8.4 9.9 85 GRAVE SPRINGS 8550 4.5 7.0 64 6.2 7.5 83 HANSEN SAWMILL 8360 4.4 4.9 90 5.5 6.1 90 MIDDLE POWDER 7760 4.6 8.6 53 5.4 9.3 58 POWDER RIVER PASS 9480 8.6 8.4 102 9.5 9.6 99 SUCKER CREEK 8880 7.7 8.7 89 9.0 10.1 89 TIE CREEK 6870 .5 4.7 11 5.5 7.7 71 ----- ----- Basin wide percent of average 77 84 BELLE FOURCHE BLIND PARK 6890 3.8 6.6 58 5.9 9.0 66 COLE CANYON 5910 1.8 4.8 38 4.6 -M * NORTH RAPID CREEK 6130 2.4 6.4 37 4.6 7.2 64 ----- ----- Basin wide percent of average 45 65 UPPER N. PLATTE RIVER COLUMBINE 9160 15.8 20.8 76 17.1 20.0 86 DIVIDE PEAK 8860 17.5 15.0 117 20.0 16.3 123 ELK RIVER 8700 18.5 15.3 121 18.1 15.4 118 JOE WRIGHT 10120 15.1 16.5 92 15.5 19.3 80 NORTH FRENCH CREEK 10130 19.9 21.7 92 19.1 19.4 98 OLD BATTLE 9920 28.9 24.9 116 30.7 27.2 113 SAGE CREEK BASIN 7850 12.6 8.7 145 14.4 9.5 152 SOUTH BRUSH CREEK 8440 8.8 9.4 94 10.2 12.8 80 TOWER 10500 -M 36.0 * -M 30.5 * WEBBER SPRINGS 9250 20.4 20.1 101 23.5 21.2 111 WILLOW CREEK PASS 9540 11.7 9.1 129 10.9 10.0 109 ----- ----- Basin wide percent of average 105 105 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 14.1 18.2 77 13.5 16.8 80 CASPER MTN. 7850 8.1 10.8 75 9.2 10.6 87 DEADMAN HILL 10220 12.5 12.4 101 10.3 12.7 81 DEER PARK 9700 19.4 14.1 138 21.6 17.1 126 LAPRELE CREEK 8375 5.2 8.5 61 7.2 9.6 75 RENO HILL 8500 6.6 9.9 67 7.2 11.0 65 ROACH 9700 12.1 13.3 91 14.6 14.2 103 SAND LAKE 10050 18.3 23.9 77 16.9 18.6 91 SOUTH PASS 9040 16.9 13.4 126 17.5 14.4 122 WINDY PEAK 7900 4.6 5.7 81 6.4 8.2 78 ----- ----- Basin wide percent of average 90 93 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.4 9.3 123 12.6 11.8 107 DIVIDE PEAK 8860 17.5 15.0 117 20.0 16.3 123 OLD BATTLE 9920 28.9 24.9 116 30.7 27.2 113 SANDSTONE RS 8150 10.4 11.9 87 16.4 15.0 109 WHISKEY PARK 8950 21.0 22.6 93 21.9 22.5 97 ----- ----- Basin wide percent of average 107 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.4 11.5 117 12.9 10.8 119 BLIND BULL SUM 8900 16.0 22.0 73 13.8 18.3 75 EAST RIM DIVIDE 7930 6.8 10.4 65 7.8 9.8 80 ELKHART PARK G.S. 9400 9.4 10.6 89 10.6 10.5 101 GROS VENTRE SUMMIT 8750 9.0 11.0 82 8.7 10.4 84 KENDALL R.S. 7740 9.5 11.8 81 10.3 11.9 87 LOOMIS PARK 8240 11.0 13.7 80 11.7 14.2 82 NEW FORK LAKE 8340 8.2 9.2 89 7.6 9.2 83 SNIDER BASIN 8060 11.6 11.8 98 12.1 13.1 92 SPRING CREEK DIVIDE 9000 19.6 21.1 93 18.9 21.6 87 TRIPLE PEAK 8500 15.1 19.9 76 16.2 19.7 82 ----- ----- Basin wide percent of average 85 87 LOWER GREEN RIVER HAMS FORK 7840 10.2 10.4 98 11.0 10.0 110 HEWINTA 9500 7.6 8.5 89 10.1 11.1 91 HICKERSON PARK 9100 7.0 5.5 127 9.4 6.0 157 HOLE-IN-ROCK 9150 5.8 5.4 107 8.5 5.6 152 INDIAN CREEK 9425 22.6 21.2 107 19.8 20.2 98 KELLEY R.S. 8180 14.0 13.2 106 15.7 16.5 95 STEEL CREEK PARK 10100 12.3 11.9 103 12.9 12.3 105 ----- ----- Basin wide percent of average 104 107 UPPER BEAR RIVER BUG LAKE 7950 17.9 16.2 110 19.8 15.5 128 HAYDEN FORK 9100 15.5 12.4 125 20.5 16.4 125 KELLEY R.S. 8180 14.0 13.2 106 15.7 16.5 95 LILY LAKE 9050 13.1 10.2 128 15.0 13.7 109 MONTE CRISTO 8960 24.7 23.3 106 24.7 20.2 122 SALT RIVER SUMMIT 7600 10.3 11.6 89 13.6 15.1 90 TRIAL LAKE 9960 25.6 19.5 131 26.5 19.5 136 ----- ----- Basin wide percent of average 114 116 ----------------------------------------------------------------------------- -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.