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 TUESDAY: DECEMBER 20 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.0 6.6 91 9.7 8.7 111 COTTONWOOD CREEK 7600 7.3 7.7 95 10.8 11.4 95 GRANITE CREEK 6770 6.4 6.0 107 8.7 7.9 110 GRASSY LAKE 7265 11.0 11.9 92 15.6 14.3 109 GROS VENTRE SUMMIT 8750 4.9 5.8 84 5.9 5.6 105 LEWIS LAKE DIVIDE 7850 10.4 12.0 87 14.4 14.6 99 PHILLIPS BENCH 8200 9.4 10.3 91 11.5 11.1 104 SALT RIVER SUMMIT 7600 4.8 4.3 112 6.7 7.5 89 SNAKE RIVER STATION 6920 5.8 6.4 91 10.4 9.2 113 SPRING CREEK DIVIDE 9000 9.5 10.5 90 10.0 10.8 93 THUMB DIVIDE 7980 5.9 6.2 95 8.2 7.7 106 TOGWOTEE PASS 9580 10.4 9.9 105 11.1 10.2 109 TWO OCEAN PLATEAU 9240 14.7 11.5 128 12.6 11.4 111 WILLOW CREEK 8450 9.3 11.8 79 14.0 13.1 107 ----- ----- Basin wide percent of average 96 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 10.0 9.8 102 8.4 8.4 100 BLACK BEAR 8170 15.7 14.4 109 17.1 14.9 115 CANYON 8090 5.5 5.0 110 7.9 6.6 120 FISHER CREEK 9100 15.7 13.8 114 15.7 14.3 110 MADISON PLATEAU 7750 8.5 9.4 90 11.9 10.4 114 NORTHEAST ENTRANCE 7350 3.5 4.1 85 5.6 5.5 102 PARKER PEAK 9400 8.2 9.1 90 8.4 7.2 117 SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109 THUMB DIVIDE 7980 5.9 6.2 95 8.2 7.7 106 TWO OCEAN PLATEAU 9240 14.7 11.5 128 12.6 11.4 111 WHISKEY CREEK 6800 4.2 6.2 68 9.2 8.4 110 WHITE MILL 8700 9.1 9.5 96 9.3 10.8 86 WOLVERINE 7650 4.5 4.7 96 4.5 6.0 75 ----- ----- Basin wide percent of average 100 107 WIND RIVER BURROUGHS CREEK 8750 -M 5.6 * 7.6 6.8 112 COLD SPRINGS 9630 1.9 4.1 46 4.3 5.1 84 DEER PARK 9700 5.5 5.9 93 7.1 9.4 76 HOBBS PARK 10100 3.4 6.9 49 4.8 5.7 84 LITTLE WARM 9370 3.8 4.6 83 5.8 5.9 98 SOUTH PASS 9040 5.1 7.2 71 6.6 8.0 82 ST. LAWRENCE ALT 8620 .8 3.4 24 2.9 4.2 69 TOGWOTEE PASS 9580 10.4 9.9 105 11.1 10.2 109 TOWNSEND CREEK 8700 2.2 3.9 56 4.9 5.4 91 ----- ----- Basin wide percent of average 72 91 BIGHORN BASIN BALD MTN. 9380 7.1 8.3 86 5.6 7.3 77 BEAR TRAP MEADOW 8200 2.4 2.2 109 4.4 4.1 107 BLACKWATER 9780 9.4 10.5 90 8.4 9.4 89 BONE SPRINGS DIV 9350 6.8 6.8 100 6.7 6.4 105 EVENING STAR 9200 9.0 11.9 76 12.3 11.1 111 GRAVE SPRINGS 8550 3.5 3.4 103 5.4 4.4 123 KIRWIN 9550 5.5 5.3 104 5.9 5.2 113 MARQUETTE 8760 1.2 4.5 27 4.2 4.8 88 MIDDLE POWDER 7760 5.4 4.9 110 5.9 6.1 97 OWL CREEK 8975 1.0 2.4 42 3.3 2.6 127 POWDER RIVER PASS 9480 4.0 4.5 89 5.7 5.3 108 SHELL CREEK 9580 5.9 6.4 92 5.8 5.8 100 SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109 SYLVAN ROAD 7120 4.0 5.3 75 8.2 8.7 94 TIMBER CREEK 7950 -M 2.7 * -M 3.4 * YOUNTS PEAK 8350 -M 6.7 * 9.3 7.0 133 ----- ----- Basin wide percent of average 85 104 SHOSHONE RIVER BLACKWATER 9780 9.4 10.5 90 8.4 9.4 89 EVENING STAR 9200 9.0 11.9 76 12.3 11.1 111 KIRWIN 9550 5.5 5.3 104 5.9 5.2 113 MARQUETTE 8760 1.2 4.5 27 4.2 4.8 88 SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109 SYLVAN ROAD 7120 4.0 5.3 75 8.2 8.7 94 YOUNTS PEAK 8350 -M 6.7 * 9.3 7.0 133 ----- ----- Basin wide percent of average 78 105 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.4 2.2 109 4.4 4.1 107 BIG GOOSE 7990 2.5 3.6 69 4.6 3.9 118 BONE SPRINGS DIV 9350 6.8 6.8 100 6.7 6.4 105 BURGESS JUNCTION 7880 4.9 4.7 104 6.4 5.4 119 CLOUD PEAK RESERVOIR 9860 5.3 4.9 108 5.8 5.8 100 DOME LAKE 8880 5.1 5.3 96 6.0 6.1 98 GRAVE SPRINGS 8550 3.5 3.4 103 5.4 4.4 123 HANSEN SAWMILL 8360 1.6 2.8 57 3.3 3.9 85 MIDDLE POWDER 7760 5.4 4.9 110 5.9 6.1 97 POWDER RIVER PASS 9480 4.0 4.5 89 5.7 5.3 108 SUCKER CREEK 8880 4.7 4.4 107 7.2 5.8 124 TIE CREEK 6870 2.7 1.8 150 6.0 4.6 130 ----- ----- Basin wide percent of average 99 109 BELLE FOURCHE BLIND PARK 6890 2.9 2.8 104 4.8 5.5 87 COLE CANYON 5910 2.3 2.6 88 4.4 -M * NORTH RAPID CREEK 6130 2.9 2.7 107 4.0 4.7 85 ----- ----- Basin wide percent of average 100 86 UPPER N. PLATTE RIVER COLUMBINE 9160 13.1 8.0 164 16.5 9.5 174 DIVIDE PEAK 8860 7.4 7.6 97 10.8 8.5 127 ELK RIVER 8700 7.0 5.5 127 9.9 7.5 132 JOE WRIGHT 10120 11.9 8.3 143 14.4 10.3 140 NORTH FRENCH CREEK 10130 14.3 11.2 128 15.4 10.3 150 OLD BATTLE 9920 26.6 12.6 211 18.6 13.4 139 SAGE CREEK BASIN 7850 4.1 4.4 93 6.6 4.9 135 SOUTH BRUSH CREEK 8440 5.9 4.3 137 9.4 6.8 138 TOWER 10500 21.7 17.6 123 23.7 15.1 157 WEBBER SPRINGS 9250 10.3 9.7 106 15.2 11.0 138 WILLOW CREEK PASS 9540 6.7 4.8 140 7.6 5.6 136 ----- ----- Basin wide percent of average 137 144 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 10.1 8.9 113 7.8 8.6 91 CASPER MTN. 7850 4.4 6.1 72 7.3 6.4 114 DEADMAN HILL 10220 7.9 6.6 120 9.1 6.9 132 DEER PARK 9700 5.5 5.9 93 7.1 9.4 76 LAPRELE CREEK 8375 2.4 4.5 53 3.9 5.5 71 RENO HILL 8500 5.4 5.8 93 7.0 6.4 109 ROACH 9700 7.2 6.1 118 10.1 7.2 140 SAND LAKE 10050 14.4 12.8 112 14.7 9.9 148 SOUTH PASS 9040 5.1 7.2 71 6.6 8.0 82 WINDY PEAK 7900 1.9 3.1 61 3.9 4.8 81 ----- ----- Basin wide percent of average 96 106 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.6 3.0 187 8.6 6.1 141 DIVIDE PEAK 8860 7.4 7.6 97 10.8 8.5 127 OLD BATTLE 9920 26.6 12.6 211 18.6 13.4 139 SANDSTONE RS 8150 5.7 4.0 142 10.6 7.6 139 WHISKEY PARK 8950 12.1 9.1 133 15.6 11.1 141 ----- ----- Basin wide percent of average 158 137 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.8 5.8 66 4.8 5.7 84 BLIND BULL SUM 8900 8.3 10.9 76 7.5 9.3 81 EAST RIM DIVIDE 7930 3.8 4.9 78 4.5 4.9 92 ELKHART PARK G.S. 9400 4.8 5.2 92 5.7 5.8 98 GROS VENTRE SUMMIT 8750 4.9 5.8 84 5.9 5.6 105 KENDALL R.S. 7740 4.6 5.4 85 5.9 5.8 102 LOOMIS PARK 8240 6.1 6.7 91 7.0 7.0 100 NEW FORK LAKE 8340 3.8 4.4 86 4.2 5.1 82 SNIDER BASIN 8060 5.9 5.7 104 6.2 6.6 94 SPRING CREEK DIVIDE 9000 9.5 10.5 90 10.0 10.8 93 TRIPLE PEAK 8500 9.1 9.8 93 10.8 9.4 115 ----- ----- Basin wide percent of average 86 95 LOWER GREEN RIVER HAMS FORK 7840 4.0 4.3 93 4.6 4.9 94 HEWINTA 9500 4.3 3.3 130 6.8 6.2 110 HICKERSON PARK 9100 1.3 2.3 57 3.3 3.8 87 HOLE-IN-ROCK 9150 3.2 2.2 145 4.1 3.6 114 INDIAN CREEK 9425 9.3 10.3 90 9.0 10.2 88 KELLEY R.S. 8180 5.4 6.3 86 7.1 8.4 85 STEEL CREEK PARK 10100 5.8 5.6 104 7.4 6.7 110 ----- ----- Basin wide percent of average 97 97 UPPER BEAR RIVER BUG LAKE 7950 6.3 6.5 97 7.8 7.8 100 HAYDEN FORK 9100 -M 5.0 * -M 8.5 * KELLEY R.S. 8180 5.4 6.3 86 7.1 8.4 85 LILY LAKE 9050 5.1 4.4 116 6.8 7.5 91 MONTE CRISTO 8960 9.1 8.6 106 10.2 10.2 100 SALT RIVER SUMMIT 7600 4.8 4.3 112 6.7 7.5 89 TRIAL LAKE 9960 9.8 8.5 115 10.5 9.5 111 ----- ----- Basin wide percent of average 105 96 ----------------------------------------------------------------------------- -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.