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 MONDAY: DECEMBER 4 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 2.7 4.5 60 6.4 6.5 98 COTTONWOOD CREEK 7600 5.3 5.2 102 8.3 8.5 98 GRANITE CREEK 6770 2.6 3.8 68 5.9 5.8 102 GRASSY LAKE 7265 5.9 8.4 70 12.7 10.3 123 GROS VENTRE SUMMIT 8750 3.6 4.2 86 5.1 4.5 113 LEWIS LAKE DIVIDE 7850 5.8 8.4 69 11.4 10.6 108 PHILLIPS BENCH 8200 4.7 7.0 67 9.2 8.0 115 SALT RIVER SUMMIT 7600 3.1 2.9 107 5.4 5.4 100 SNAKE RIVER STATION 6920 3.2 4.4 73 9.9 6.8 146 SPRING CREEK DIVIDE 9000 5.7 7.4 77 7.2 7.9 91 THUMB DIVIDE 7980 2.8 4.3 65 5.4 5.8 93 TOGWOTEE PASS 9580 5.7 7.5 76 7.2 7.8 92 TWO OCEAN PLATEAU 9240 6.9 8.8 78 7.9 8.7 91 WILLOW CREEK 8450 6.8 8.3 82 10.6 10.0 106 ----- ----- Basin wide percent of average 76 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.6 7.5 61 5.3 6.3 84 BLACK BEAR 8170 9.1 10.4 87 13.2 11.2 118 CANYON 8090 2.8 3.5 80 5.9 5.1 116 FISHER CREEK 9100 9.3 9.9 94 11.9 10.5 113 MADISON PLATEAU 7750 4.6 6.6 70 8.4 7.7 109 NORTHEAST ENTRANCE 7350 1.4 2.8 50 5.7 4.2 136 PARKER PEAK 9400 5.6 7.1 79 6.8 5.8 117 SYLVAN LAKE 8420 3.9 6.8 57 8.5 7.5 113 THUMB DIVIDE 7980 2.8 4.3 65 5.4 5.8 93 TWO OCEAN PLATEAU 9240 6.9 8.8 78 7.9 8.7 91 WHISKEY CREEK 6800 3.2 4.2 76 7.4 6.3 117 WHITE MILL 8700 5.6 7.1 79 8.2 8.2 100 WOLVERINE 7650 2.2 3.3 67 4.1 4.7 87 ----- ----- Basin wide percent of average 75 107 WIND RIVER BURROUGHS CREEK 8750 2.6 4.1 63 4.6 5.2 88 COLD SPRINGS 9630 1.5 3.3 45 2.7 4.3 63 DEER PARK 9700 4.2 4.7 89 6.1 7.5 81 HOBBS PARK 10100 3.1 5.6 55 3.5 4.8 73 LITTLE WARM 9370 2.5 3.6 69 3.6 4.8 75 SOUTH PASS 9040 4.4 5.3 83 5.9 6.3 94 ST. LAWRENCE ALT 8620 1.5 2.8 54 2.7 3.6 75 TOGWOTEE PASS 9580 5.7 7.5 76 7.2 7.8 92 TOWNSEND CREEK 8700 2.2 3.1 71 4.9 4.6 107 ----- ----- Basin wide percent of average 69 84 BIGHORN BASIN BALD MTN. 9380 7.2 6.3 114 5.9 5.6 105 BEAR TRAP MEADOW 8200 1.6 1.7 94 2.7 3.5 77 BLACKWATER 9780 6.1 8.2 74 6.7 7.5 89 BONE SPRINGS DIV 9350 6.5 5.5 118 5.4 5.1 106 EVENING STAR 9200 5.6 9.1 62 -M 8.7 * GRAVE SPRINGS 8550 2.0 2.8 71 2.8 3.7 76 KIRWIN 9550 2.9 4.4 66 4.0 4.3 93 MARQUETTE 8760 .4 3.9 10 3.4 4.2 81 MIDDLE POWDER 7760 3.0 3.7 81 3.7 5.1 73 OWL CREEK 8975 1.9 2.0 95 2.7 2.3 117 POWDER RIVER PASS 9480 3.4 3.5 97 4.1 4.3 95 SHELL CREEK 9580 6.6 5.3 125 4.8 4.7 102 SYLVAN LAKE 8420 3.9 6.8 57 8.5 7.5 113 SYLVAN ROAD 7120 1.6 3.8 42 6.7 6.9 97 TIMBER CREEK 7950 .3 2.4 12 2.8 3.1 90 YOUNTS PEAK 8350 2.4 5.0 48 4.7 5.5 85 ----- ----- Basin wide percent of average 74 94 SHOSHONE RIVER BLACKWATER 9780 6.1 8.2 74 6.7 7.5 89 EVENING STAR 9200 5.6 9.1 62 -M 8.7 * KIRWIN 9550 2.9 4.4 66 4.0 4.3 93 MARQUETTE 8760 .4 3.9 10 3.4 4.2 81 SYLVAN LAKE 8420 3.9 6.8 57 8.5 7.5 113 SYLVAN ROAD 7120 1.6 3.8 42 6.7 6.9 97 YOUNTS PEAK 8350 2.4 5.0 48 4.7 5.5 85 ----- ----- Basin wide percent of average 56 95 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.6 1.7 94 2.7 3.5 77 BIG GOOSE 7990 1.8 2.5 72 3.1 3.1 100 BONE SPRINGS DIV 9350 6.5 5.5 118 5.4 5.1 106 BURGESS JUNCTION 7880 3.0 3.7 81 4.5 4.4 102 CLOUD PEAK RESERVOIR 9860 3.5 4.0 88 3.7 5.0 74 DOME LAKE 8880 3.2 4.3 74 4.3 5.1 84 GRAVE SPRINGS 8550 2.0 2.8 71 2.8 3.7 76 HANSEN SAWMILL 8360 .6 2.1 29 1.8 3.3 55 MIDDLE POWDER 7760 3.0 3.7 81 3.7 5.1 73 POWDER RIVER PASS 9480 3.4 3.5 97 4.1 4.3 95 SUCKER CREEK 8880 3.9 3.4 115 4.8 4.7 102 TIE CREEK 6870 .4 1.3 31 4.4 3.8 116 ----- ----- Basin wide percent of average 85 89 BELLE FOURCHE BLIND PARK 6890 .7 2.1 33 3.4 4.7 72 COLE CANYON 5910 .9 2.0 45 3.8 -M * NORTH RAPID CREEK 6130 1.6 1.8 89 2.9 3.9 74 ----- ----- Basin wide percent of average 54 73 UPPER N. PLATTE RIVER COLUMBINE 9160 4.8 5.5 87 7.4 6.9 107 DIVIDE PEAK 8860 5.5 5.5 100 7.6 6.6 115 ELK RIVER 8700 4.0 3.5 114 6.4 5.6 114 JOE WRIGHT 10120 6.5 6.6 98 7.9 8.1 98 NORTH FRENCH CREEK 10130 7.5 8.4 89 8.4 7.9 106 OLD BATTLE 9920 8.7 9.6 91 10.7 9.9 108 SAGE CREEK BASIN 7850 3.9 3.2 122 5.8 3.8 153 SOUTH BRUSH CREEK 8440 3.1 3.1 100 4.9 5.5 89 TOWER 10500 10.2 13.4 76 12.2 11.3 108 WEBBER SPRINGS 9250 6.1 7.1 86 9.6 8.3 116 WILLOW CREEK PASS 9540 4.9 3.8 129 4.6 4.6 100 ----- ----- Basin wide percent of average 94 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 5.4 6.5 83 6.3 6.6 95 CASPER MTN. 7850 2.7 4.8 56 4.4 5.4 81 DEADMAN HILL 10220 5.2 5.3 98 5.5 5.6 98 DEER PARK 9700 4.2 4.7 89 6.1 7.5 81 LAPRELE CREEK 8375 2.2 3.4 65 3.3 4.5 73 RENO HILL 8500 4.0 4.5 89 5.0 5.3 94 ROACH 9700 5.6 4.6 122 7.2 5.5 131 SAND LAKE 10050 7.4 9.8 76 7.7 7.6 101 SOUTH PASS 9040 4.4 5.3 83 5.9 6.3 94 WINDY PEAK 7900 1.4 2.4 58 3.1 3.9 79 ----- ----- Basin wide percent of average 83 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .6 2.0 30 4.6 4.7 98 DIVIDE PEAK 8860 5.5 5.5 100 7.6 6.6 115 OLD BATTLE 9920 8.7 9.6 91 10.7 9.9 108 SANDSTONE RS 8150 2.4 2.6 92 5.2 5.8 90 WHISKEY PARK 8950 4.9 6.5 75 8.2 8.3 99 ----- ----- Basin wide percent of average 84 103 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 4.3 98 4.6 4.5 102 BLIND BULL SUM 8900 5.8 7.7 75 6.2 6.9 90 EAST RIM DIVIDE 7930 1.8 3.5 51 3.7 3.7 100 ELKHART PARK G.S. 9400 2.4 3.8 63 4.5 4.6 98 GROS VENTRE SUMMIT 8750 3.6 4.2 86 5.1 4.5 113 KENDALL R.S. 7740 1.8 3.5 51 4.3 4.4 98 LOOMIS PARK 8240 2.5 4.8 52 4.9 5.2 94 NEW FORK LAKE 8340 2.2 3.1 71 4.2 4.0 105 SNIDER BASIN 8060 3.3 3.9 85 4.8 4.8 100 SPRING CREEK DIVIDE 9000 5.7 7.4 77 7.2 7.9 91 TRIPLE PEAK 8500 5.6 6.9 81 8.3 7.0 119 ----- ----- Basin wide percent of average 73 101 LOWER GREEN RIVER HAMS FORK 7840 2.2 2.8 79 3.8 3.7 103 HEWINTA 9500 1.4 2.4 58 5.4 5.1 106 HICKERSON PARK 9100 .3 1.6 19 4.0 3.3 121 HOLE-IN-ROCK 9150 1.9 1.6 119 3.6 3.1 116 INDIAN CREEK 9425 5.9 7.3 81 6.5 7.5 87 KELLEY R.S. 8180 3.7 4.5 82 5.8 6.1 95 STEEL CREEK PARK 10100 4.0 4.3 93 5.5 5.4 102 ----- ----- Basin wide percent of average 79 101 UPPER BEAR RIVER BUG LAKE 7950 3.6 4.5 80 6.1 6.0 102 HAYDEN FORK 9100 3.1 3.4 91 8.8 6.5 135 KELLEY R.S. 8180 3.7 4.5 82 5.8 6.1 95 LILY LAKE 9050 3.8 3.1 123 6.6 6.0 110 MONTE CRISTO 8960 6.5 5.7 114 8.7 7.8 112 SALT RIVER SUMMIT 7600 3.1 2.9 107 5.4 5.4 100 TRIAL LAKE 9960 4.3 6.0 72 8.7 7.1 123 ----- ----- Basin wide percent of average 93 112 ----------------------------------------------------------------------------- -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.