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 SUNDAY: DECEMBER 18 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.9 6.3 94 9.6 8.5 113 COTTONWOOD CREEK 7600 6.6 7.4 89 10.0 11.0 91 GRANITE CREEK 6770 6.2 5.7 109 8.5 7.6 112 GRASSY LAKE 7265 10.6 11.5 92 15.0 13.8 109 GROS VENTRE SUMMIT 8750 4.7 5.6 84 6.0 5.5 109 LEWIS LAKE DIVIDE 7850 10.0 11.6 86 13.8 14.1 98 PHILLIPS BENCH 8200 9.0 9.9 91 11.1 10.7 104 SALT RIVER SUMMIT 7600 4.3 4.2 102 6.2 7.2 86 SNAKE RIVER STATION 6920 5.4 6.2 87 10.2 8.9 115 SPRING CREEK DIVIDE 9000 8.6 10.1 85 9.2 10.4 88 THUMB DIVIDE 7980 5.6 6.0 93 7.9 7.4 107 TOGWOTEE PASS 9580 10.0 9.6 104 10.6 9.9 107 TWO OCEAN PLATEAU 9240 14.7 11.2 131 12.5 11.1 113 WILLOW CREEK 8450 8.7 11.3 77 13.3 12.7 105 ----- ----- Basin wide percent of average 95 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 9.4 9.5 99 7.8 8.1 96 BLACK BEAR 8170 15.3 14.0 109 16.7 14.4 116 CANYON 8090 5.6 4.8 117 7.6 6.4 119 FISHER CREEK 9100 15.5 13.3 117 15.2 13.8 110 MADISON PLATEAU 7750 8.3 9.1 91 11.5 10.1 114 NORTHEAST ENTRANCE 7350 3.3 3.9 85 5.5 5.3 104 PARKER PEAK 9400 7.7 8.9 87 7.8 7.0 111 SYLVAN LAKE 8420 6.4 8.7 74 9.9 9.2 108 THUMB DIVIDE 7980 5.6 6.0 93 7.9 7.4 107 TWO OCEAN PLATEAU 9240 14.7 11.2 131 12.5 11.1 113 WHISKEY CREEK 6800 4.0 5.9 68 9.2 8.1 114 WHITE MILL 8700 9.0 9.3 97 8.7 10.5 83 WOLVERINE 7650 4.3 4.5 96 3.8 5.9 64 ----- ----- Basin wide percent of average 100 106 WIND RIVER BURROUGHS CREEK 8750 -M 5.5 * 7.1 6.6 108 COLD SPRINGS 9630 1.6 4.0 40 4.2 5.0 84 DEER PARK 9700 5.2 5.8 90 7.0 9.2 76 HOBBS PARK 10100 3.3 6.8 49 4.6 5.6 82 LITTLE WARM 9370 3.5 4.5 78 5.7 5.8 98 SOUTH PASS 9040 4.9 7.0 70 6.5 7.8 83 ST. LAWRENCE ALT 8620 .5 3.4 15 2.9 4.1 71 TOGWOTEE PASS 9580 10.0 9.6 104 10.6 9.9 107 TOWNSEND CREEK 8700 1.7 3.8 45 5.0 5.3 94 ----- ----- Basin wide percent of average 68 90 BIGHORN BASIN BALD MTN. 9380 7.1 8.1 88 5.3 7.1 75 BEAR TRAP MEADOW 8200 2.1 2.2 95 4.4 4.0 110 BLACKWATER 9780 9.1 10.3 88 8.2 9.2 89 BONE SPRINGS DIV 9350 6.8 6.6 103 6.4 6.2 103 EVENING STAR 9200 8.7 11.6 75 11.6 10.8 107 GRAVE SPRINGS 8550 3.4 3.3 103 5.4 4.3 126 KIRWIN 9550 5.3 5.2 102 5.5 5.1 108 MARQUETTE 8760 1.0 4.4 23 3.7 4.8 77 MIDDLE POWDER 7760 5.2 4.8 108 5.7 5.9 97 OWL CREEK 8975 .8 2.4 33 2.7 2.6 104 POWDER RIVER PASS 9480 4.1 4.4 93 5.4 5.1 106 SHELL CREEK 9580 5.8 6.2 94 5.8 5.7 102 SYLVAN LAKE 8420 6.4 8.7 74 9.9 9.2 108 SYLVAN ROAD 7120 3.8 5.1 75 8.0 8.5 94 TIMBER CREEK 7950 .7 2.7 26 3.4 3.4 100 YOUNTS PEAK 8350 -M 6.5 * 8.6 6.8 126 ----- ----- Basin wide percent of average 82 101 SHOSHONE RIVER BLACKWATER 9780 9.1 10.3 88 8.2 9.2 89 EVENING STAR 9200 8.7 11.6 75 11.6 10.8 107 KIRWIN 9550 5.3 5.2 102 5.5 5.1 108 MARQUETTE 8760 1.0 4.4 23 3.7 4.8 77 SYLVAN LAKE 8420 6.4 8.7 74 9.9 9.2 108 SYLVAN ROAD 7120 3.8 5.1 75 8.0 8.5 94 YOUNTS PEAK 8350 -M 6.5 * 8.6 6.8 126 ----- ----- Basin wide percent of average 76 102 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.1 2.2 95 4.4 4.0 110 BIG GOOSE 7990 2.2 3.5 63 4.3 3.8 113 BONE SPRINGS DIV 9350 6.8 6.6 103 6.4 6.2 103 BURGESS JUNCTION 7880 4.7 4.6 102 6.0 5.2 115 CLOUD PEAK RESERVOIR 9860 5.2 4.8 108 5.1 5.7 89 DOME LAKE 8880 4.8 5.2 92 6.1 6.0 102 GRAVE SPRINGS 8550 3.4 3.3 103 5.4 4.3 126 HANSEN SAWMILL 8360 1.5 2.7 56 3.2 3.8 84 MIDDLE POWDER 7760 5.2 4.8 108 5.7 5.9 97 POWDER RIVER PASS 9480 4.1 4.4 93 5.4 5.1 106 SUCKER CREEK 8880 4.6 4.3 107 7.0 5.7 123 TIE CREEK 6870 2.5 1.7 147 5.9 4.5 131 ----- ----- Basin wide percent of average 98 108 BELLE FOURCHE BLIND PARK 6890 2.8 2.7 104 4.8 5.4 89 COLE CANYON 5910 2.1 2.5 84 4.4 -M * NORTH RAPID CREEK 6130 2.6 2.6 100 3.7 4.6 80 ----- ----- Basin wide percent of average 96 85 UPPER N. PLATTE RIVER COLUMBINE 9160 11.5 7.6 151 14.8 9.2 161 DIVIDE PEAK 8860 6.5 7.3 89 10.0 8.3 120 ELK RIVER 8700 5.7 5.2 110 8.8 7.2 122 JOE WRIGHT 10120 10.4 8.1 128 12.8 10.0 128 NORTH FRENCH CREEK 10130 12.1 10.8 112 13.1 10.0 131 OLD BATTLE 9920 25.1 12.3 204 17.0 13.0 131 SAGE CREEK BASIN 7850 3.6 4.2 86 6.3 4.8 131 SOUTH BRUSH CREEK 8440 5.0 4.1 122 8.4 6.6 127 TOWER 10500 19.3 17.1 113 21.8 14.6 149 WEBBER SPRINGS 9250 9.2 9.4 98 14.1 10.7 132 WILLOW CREEK PASS 9540 6.2 4.7 132 7.1 5.5 129 ----- ----- Basin wide percent of average 126 134 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 9.1 8.6 106 7.1 8.3 86 CASPER MTN. 7850 4.1 5.9 69 7.1 6.3 113 DEADMAN HILL 10220 7.2 6.4 112 8.7 6.7 130 DEER PARK 9700 5.2 5.8 90 7.0 9.2 76 LAPRELE CREEK 8375 2.3 4.4 52 3.7 5.3 70 RENO HILL 8500 5.2 5.6 93 6.7 6.3 106 ROACH 9700 6.5 5.9 110 9.2 7.0 131 SAND LAKE 10050 13.3 12.4 107 13.6 9.6 142 SOUTH PASS 9040 4.9 7.0 70 6.5 7.8 83 WINDY PEAK 7900 1.8 3.0 60 4.0 4.7 85 ----- ----- Basin wide percent of average 92 103 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.7 2.9 162 7.7 5.9 131 DIVIDE PEAK 8860 6.5 7.3 89 10.0 8.3 120 OLD BATTLE 9920 25.1 12.3 204 17.0 13.0 131 SANDSTONE RS 8150 4.9 3.8 129 9.7 7.4 131 WHISKEY PARK 8950 10.8 8.7 124 14.1 10.8 131 ----- ----- Basin wide percent of average 149 129 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.4 5.7 60 4.3 5.6 77 BLIND BULL SUM 8900 7.5 10.5 71 7.2 9.0 80 EAST RIM DIVIDE 7930 3.5 4.7 74 4.3 4.8 90 ELKHART PARK G.S. 9400 4.5 5.1 88 5.3 5.7 93 GROS VENTRE SUMMIT 8750 4.7 5.6 84 6.0 5.5 109 KENDALL R.S. 7740 4.3 5.1 84 5.8 5.6 104 LOOMIS PARK 8240 5.8 6.4 91 6.7 6.8 99 NEW FORK LAKE 8340 3.5 4.2 83 3.7 5.0 74 SNIDER BASIN 8060 5.4 5.5 98 5.7 6.4 89 SPRING CREEK DIVIDE 9000 8.6 10.1 85 9.2 10.4 88 TRIPLE PEAK 8500 8.6 9.4 91 10.3 9.1 113 ----- ----- Basin wide percent of average 83 93 LOWER GREEN RIVER HAMS FORK 7840 3.6 4.1 88 4.3 4.8 90 HEWINTA 9500 3.7 3.1 119 6.7 6.1 110 HICKERSON PARK 9100 1.0 2.2 45 3.4 3.7 92 HOLE-IN-ROCK 9150 2.7 2.1 129 3.9 3.5 111 INDIAN CREEK 9425 8.7 9.9 88 8.3 9.9 84 KELLEY R.S. 8180 4.9 6.1 80 6.6 8.1 81 STEEL CREEK PARK 10100 5.4 5.5 98 7.1 6.5 109 ----- ----- Basin wide percent of average 91 95 UPPER BEAR RIVER BUG LAKE 7950 5.6 6.2 90 7.1 7.6 93 HAYDEN FORK 9100 -M 4.7 * -M 8.2 * KELLEY R.S. 8180 4.9 6.1 80 6.6 8.1 81 LILY LAKE 9050 4.8 4.3 112 6.6 7.3 90 MONTE CRISTO 8960 8.0 8.2 98 9.7 9.9 98 SALT RIVER SUMMIT 7600 4.3 4.2 102 6.2 7.2 86 TRIAL LAKE 9960 9.0 8.2 110 10.1 9.2 110 ----- ----- Basin wide percent of average 98 94 ----------------------------------------------------------------------------- -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.