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 SATURDAY: DECEMBER 16 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.7 6.0 95 9.1 8.2 111 COTTONWOOD CREEK 7600 7.6 7.1 107 10.5 10.7 98 GRANITE CREEK 6770 5.0 5.4 93 8.2 7.4 111 GRASSY LAKE 7265 10.0 11.0 91 17.0 13.3 128 GROS VENTRE SUMMIT 8750 5.1 5.4 94 6.2 5.3 117 LEWIS LAKE DIVIDE 7850 9.8 11.1 88 15.4 13.6 113 PHILLIPS BENCH 8200 8.0 9.5 84 12.0 10.4 115 SALT RIVER SUMMIT 7600 4.5 4.0 112 6.7 6.9 97 SNAKE RIVER STATION 6920 5.9 5.9 100 12.7 8.6 148 SPRING CREEK DIVIDE 9000 8.0 9.8 82 9.3 10.1 92 THUMB DIVIDE 7980 4.7 5.7 82 6.9 7.2 96 TOGWOTEE PASS 9580 8.1 9.3 87 9.5 9.6 99 TWO OCEAN PLATEAU 9240 10.0 10.9 92 10.4 10.8 96 WILLOW CREEK 8450 9.5 10.9 87 13.4 12.4 108 ----- ----- Basin wide percent of average 91 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 7.3 9.2 79 7.5 7.9 95 BLACK BEAR 8170 13.0 13.5 96 16.1 13.9 116 CANYON 8090 4.1 4.6 89 7.1 6.3 113 FISHER CREEK 9100 13.6 12.9 105 14.9 13.3 112 MADISON PLATEAU 7750 6.5 8.8 74 10.1 9.7 104 NORTHEAST ENTRANCE 7350 2.5 3.8 66 6.8 5.2 131 PARKER PEAK 9400 7.5 8.6 87 7.9 6.8 116 SYLVAN LAKE 8420 5.8 8.4 69 10.6 9.0 118 THUMB DIVIDE 7980 4.7 5.7 82 6.9 7.2 96 TWO OCEAN PLATEAU 9240 10.0 10.9 92 10.4 10.8 96 WHISKEY CREEK 6800 4.2 5.7 74 8.3 7.8 106 WHITE MILL 8700 7.9 9.0 88 10.2 10.2 100 WOLVERINE 7650 4.1 4.3 95 5.2 5.7 91 ----- ----- Basin wide percent of average 87 107 WIND RIVER BURROUGHS CREEK 8750 5.0 5.3 94 6.9 6.4 108 COLD SPRINGS 9630 1.9 3.9 49 3.2 4.9 65 DEER PARK 9700 4.2 5.7 74 6.6 8.9 74 HOBBS PARK 10100 3.5 6.7 52 3.7 5.5 67 LITTLE WARM 9370 3.5 4.4 80 4.4 5.6 79 SOUTH PASS 9040 4.8 6.9 70 6.1 7.5 81 ST. LAWRENCE ALT 8620 1.6 3.3 48 2.9 4.0 72 TOGWOTEE PASS 9580 8.1 9.3 87 9.5 9.6 99 TOWNSEND CREEK 8700 2.2 3.7 59 4.6 5.2 88 ----- ----- Basin wide percent of average 71 83 BIGHORN BASIN BALD MTN. 9380 8.1 7.8 104 6.3 6.8 93 BEAR TRAP MEADOW 8200 1.6 2.1 76 2.7 3.9 69 BLACKWATER 9780 8.6 10.0 86 8.5 8.9 96 BONE SPRINGS DIV 9350 7.3 6.5 112 6.1 6.1 100 EVENING STAR 9200 9.4 11.3 83 11.9 10.5 113 GRAVE SPRINGS 8550 2.3 3.2 72 2.9 4.2 69 KIRWIN 9550 3.8 5.1 75 4.7 5.0 94 MARQUETTE 8760 -M 4.3 * 3.1 4.7 66 MIDDLE POWDER 7760 3.3 4.7 70 3.7 5.8 64 OWL CREEK 8975 2.2 2.3 96 2.9 2.5 116 POWDER RIVER PASS 9480 3.5 4.3 81 4.3 5.0 86 SHELL CREEK 9580 7.1 6.1 116 5.1 5.6 91 SYLVAN LAKE 8420 5.8 8.4 69 10.6 9.0 118 SYLVAN ROAD 7120 3.3 5.0 66 8.5 8.3 102 TIMBER CREEK 7950 .2 2.6 8 2.7 3.3 82 YOUNTS PEAK 8350 4.1 6.3 65 6.9 6.7 103 ----- ----- Basin wide percent of average 82 94 SHOSHONE RIVER BLACKWATER 9780 8.6 10.0 86 8.5 8.9 96 EVENING STAR 9200 9.4 11.3 83 11.9 10.5 113 KIRWIN 9550 3.8 5.1 75 4.7 5.0 94 MARQUETTE 8760 -M 4.3 * 3.1 4.7 66 SYLVAN LAKE 8420 5.8 8.4 69 10.6 9.0 118 SYLVAN ROAD 7120 3.3 5.0 66 8.5 8.3 102 YOUNTS PEAK 8350 4.1 6.3 65 6.9 6.7 103 ----- ----- Basin wide percent of average 76 102 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.6 2.1 76 2.7 3.9 69 BIG GOOSE 7990 2.0 3.4 59 3.3 3.7 89 BONE SPRINGS DIV 9350 7.3 6.5 112 6.1 6.1 100 BURGESS JUNCTION 7880 3.5 4.5 78 4.8 5.1 94 CLOUD PEAK RESERVOIR 9860 4.1 4.7 87 3.8 5.6 68 DOME LAKE 8880 3.8 5.1 75 4.9 5.9 83 GRAVE SPRINGS 8550 2.3 3.2 72 2.9 4.2 69 HANSEN SAWMILL 8360 .6 2.6 23 1.9 3.7 51 MIDDLE POWDER 7760 3.3 4.7 70 3.7 5.8 64 POWDER RIVER PASS 9480 3.5 4.3 81 4.3 5.0 86 SUCKER CREEK 8880 4.5 4.2 107 5.3 5.6 95 TIE CREEK 6870 .6 1.6 37 4.6 4.4 105 ----- ----- Basin wide percent of average 79 82 BELLE FOURCHE BLIND PARK 6890 .9 2.6 35 3.5 5.3 66 COLE CANYON 5910 1.1 2.4 46 3.9 -M * NORTH RAPID CREEK 6130 1.9 2.5 76 3.1 4.5 69 ----- ----- Basin wide percent of average 52 67 UPPER N. PLATTE RIVER COLUMBINE 9160 6.1 7.3 84 8.8 8.9 99 DIVIDE PEAK 8860 6.3 7.0 90 8.4 8.0 105 ELK RIVER 8700 5.0 4.9 102 7.1 7.0 101 JOE WRIGHT 10120 7.6 7.8 97 8.8 9.7 91 NORTH FRENCH CREEK 10130 8.9 10.5 85 9.7 9.7 100 OLD BATTLE 9920 9.6 12.0 80 12.2 12.5 98 SAGE CREEK BASIN 7850 4.5 4.1 110 6.1 4.7 130 SOUTH BRUSH CREEK 8440 3.8 4.0 95 5.9 6.5 91 TOWER 10500 12.2 16.6 73 14.7 14.1 104 WEBBER SPRINGS 9250 6.9 9.1 76 10.2 10.3 99 WILLOW CREEK PASS 9540 4.9 4.6 107 4.8 5.4 89 ----- ----- Basin wide percent of average 86 100 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 6.6 8.3 80 7.2 8.1 89 CASPER MTN. 7850 3.0 5.8 52 4.8 6.2 77 DEADMAN HILL 10220 5.0 6.3 79 5.9 6.6 89 DEER PARK 9700 4.2 5.7 74 6.6 8.9 74 LAPRELE CREEK 8375 2.6 4.3 60 3.6 5.2 69 RENO HILL 8500 4.4 5.5 80 5.3 6.1 87 ROACH 9700 6.5 5.7 114 8.4 6.8 124 SAND LAKE 10050 8.6 12.1 71 8.7 9.3 94 SOUTH PASS 9040 4.8 6.9 70 6.1 7.5 81 WINDY PEAK 7900 1.8 2.9 62 3.6 4.6 78 ----- ----- Basin wide percent of average 75 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.5 2.7 56 5.4 5.7 95 DIVIDE PEAK 8860 6.3 7.0 90 8.4 8.0 105 OLD BATTLE 9920 9.6 12.0 80 12.2 12.5 98 SANDSTONE RS 8150 2.4 3.6 67 6.0 7.1 85 WHISKEY PARK 8950 6.5 8.4 77 9.6 10.4 92 ----- ----- Basin wide percent of average 78 95 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.0 5.5 91 5.3 5.4 98 BLIND BULL SUM 8900 9.0 10.1 89 8.3 8.7 95 EAST RIM DIVIDE 7930 3.1 4.6 67 4.9 4.6 107 ELKHART PARK G.S. 9400 3.5 4.9 71 5.3 5.5 96 GROS VENTRE SUMMIT 8750 5.1 5.4 94 6.2 5.3 117 KENDALL R.S. 7740 4.2 4.9 86 5.9 5.5 107 LOOMIS PARK 8240 4.4 6.2 71 6.7 6.5 103 NEW FORK LAKE 8340 3.6 4.1 88 5.1 4.8 106 SNIDER BASIN 8060 4.5 5.3 85 6.0 6.1 98 SPRING CREEK DIVIDE 9000 8.0 9.8 82 9.3 10.1 92 TRIPLE PEAK 8500 8.1 9.1 89 10.8 8.8 123 ----- ----- Basin wide percent of average 84 104 LOWER GREEN RIVER HAMS FORK 7840 3.3 3.9 85 4.4 4.6 96 HEWINTA 9500 2.6 3.0 87 6.4 5.9 108 HICKERSON PARK 9100 1.3 2.1 62 4.3 3.7 116 HOLE-IN-ROCK 9150 2.4 2.0 120 4.0 3.4 118 INDIAN CREEK 9425 7.9 9.6 82 8.1 9.5 85 KELLEY R.S. 8180 5.1 5.9 86 7.2 7.8 92 STEEL CREEK PARK 10100 5.1 5.3 96 6.4 6.4 100 ----- ----- Basin wide percent of average 87 99 UPPER BEAR RIVER BUG LAKE 7950 5.0 5.9 85 7.0 7.4 95 HAYDEN FORK 9100 4.1 4.5 91 9.8 8.0 123 KELLEY R.S. 8180 5.1 5.9 86 7.2 7.8 92 LILY LAKE 9050 4.5 4.1 110 7.3 7.1 103 MONTE CRISTO 8960 8.4 7.8 108 10.4 9.6 108 SALT RIVER SUMMIT 7600 4.5 4.0 112 6.7 6.9 97 TRIAL LAKE 9960 5.0 7.9 63 9.5 8.9 107 ----- ----- Basin wide percent of average 91 104 ----------------------------------------------------------------------------- -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.