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 15 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.0 5.9 153 9.7 8.0 121 COTTONWOOD CREEK 7600 7.8 6.9 113 8.6 10.5 82 GRANITE CREEK 6770 7.1 5.3 134 7.9 7.3 108 GRASSY LAKE 7265 14.7 10.8 136 15.3 13.1 117 GROS VENTRE SUMMIT 8775 4.8 5.3 91 4.2 5.2 81 LEWIS LAKE DIVIDE 7860 14.2 10.9 130 14.7 13.3 111 PHILLIPS BENCH 8200 9.6 9.3 103 10.1 10.2 99 SALT RIVER SUMMIT 7600 4.3 3.9 110 5.1 6.8 75 SNAKE RIVER STATION 6920 -M 5.8 * 11.3 8.5 133 SPRING CREEK DIVIDE 9000 8.1 9.6 84 7.9 9.9 80 THUMB DIVIDE 7980 8.1 5.6 145 8.0 7.1 113 TOGWOTEE PASS 9580 8.1 9.1 89 8.5 9.4 90 TWO OCEAN PLATEAU 9360 12.7 10.7 119 10.6 10.6 100 WILLOW CREEK 8450 10.7 10.7 100 12.1 12.2 99 ----- ----- Basin wide percent of average 115 101 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 8.7 9.1 96 8.8 7.8 113 BLACK BEAR 8170 16.4 13.3 123 15.7 13.7 115 CANYON 8090 4.8 4.5 107 5.5 6.2 89 FISHER CREEK 9100 13.4 12.7 106 13.7 13.1 105 MADISON PLATEAU 7750 9.3 8.6 108 9.2 9.5 97 NORTHEAST ENTRANCE 7350 2.8 3.7 76 5.4 5.1 106 PARKER PEAK 9400 8.2 8.5 96 6.5 6.7 97 SYLVAN LAKE 8420 6.8 8.3 82 9.0 8.9 101 THUMB DIVIDE 7980 8.1 5.6 145 8.0 7.1 113 TWO OCEAN PLATEAU 9360 12.7 10.7 119 10.6 10.6 100 WHISKEY CREEK 6800 6.7 5.6 120 7.9 7.7 103 WHITE MILL 8700 -M 8.9 * -M 10.0 * WOLVERINE 7650 4.5 4.2 107 4.2 5.6 75 ----- ----- Basin wide percent of average 108 102 WIND RIVER BURROUGHS CREEK 8750 5.3 5.2 102 6.3 6.3 100 COLD SPRINGS 9630 -M 3.9 * -M 4.9 * DEER PARK 9700 4.9 5.6 88 6.2 8.8 70 HOBBS PARK 10100 -M 6.6 * -M 5.4 * LITTLE WARM 9370 3.4 4.3 79 3.9 5.5 71 SOUTH PASS 9040 5.1 6.8 75 5.4 7.4 73 ST. LAWRENCE ALT 8620 1.6 3.3 48 2.1 4.0 52 TOGWOTEE PASS 9580 8.1 9.1 89 8.5 9.4 90 TOWNSEND CREEK 8700 2.6 3.7 70 3.3 5.2 63 ----- ----- Basin wide percent of average 82 77 BIGHORN BASIN BALD MTN. 9380 5.6 7.7 73 4.8 6.7 72 BEAR TRAP MEADOW 8200 2.2 2.1 105 2.5 3.9 64 BLACKWATER 9780 10.7 9.9 108 9.4 8.8 107 BONE SPRINGS DIV 9350 5.4 6.4 84 5.7 6.0 95 EVENING STAR 9200 8.9 11.1 80 11.8 10.4 113 GRAVE SPRINGS 8550 2.4 3.1 77 2.6 4.2 62 KIRWIN 9550 2.4 5.1 47 3.2 4.9 65 MARQUETTE 8760 3.3 4.3 77 3.6 4.6 78 MIDDLE POWDER 7760 -M 4.6 * -M 5.8 * OWL CREEK 8975 -M 2.3 * -M 2.5 * POWDER RIVER PASS 9480 3.8 4.2 90 4.3 5.0 86 SHELL CREEK 9580 5.6 6.0 93 5.4 5.5 98 SYLVAN LAKE 8420 6.8 8.3 82 9.0 8.9 101 SYLVAN ROAD 7120 5.6 4.9 114 7.7 8.2 94 TIMBER CREEK 7950 1.3 2.6 50 1.9 3.3 58 YOUNTS PEAK 8350 4.2 6.2 68 5.4 6.6 82 ----- ----- Basin wide percent of average 83 89 SHOSHONE RIVER BLACKWATER 9780 10.7 9.9 108 9.4 8.8 107 EVENING STAR 9200 8.9 11.1 80 11.8 10.4 113 KIRWIN 9550 2.4 5.1 47 3.2 4.9 65 MARQUETTE 8760 3.3 4.3 77 3.6 4.6 78 SYLVAN LAKE 8420 6.8 8.3 82 9.0 8.9 101 SYLVAN ROAD 7120 5.6 4.9 114 7.7 8.2 94 YOUNTS PEAK 8350 4.2 6.2 68 5.4 6.6 82 ----- ----- Basin wide percent of average 84 96 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.1 105 2.5 3.9 64 BIG GOOSE 7990 -M 3.3 * .6 3.7 16 BONE SPRINGS DIV 9350 5.4 6.4 84 5.7 6.0 95 BURGESS JUNCTION 7880 3.7 4.4 84 3.8 5.1 75 CLOUD PEAK RESERVOIR 9860 4.3 4.6 93 4.1 5.6 73 DOME LAKE 8880 4.3 5.0 86 5.3 5.8 91 GRAVE SPRINGS 8550 2.4 3.1 77 2.6 4.2 62 HANSEN SAWMILL 8360 2.5 2.6 96 2.4 3.7 65 MIDDLE POWDER 7760 -M 4.6 * -M 5.8 * POWDER RIVER PASS 9480 3.8 4.2 90 4.3 5.0 86 SUCKER CREEK 8880 3.7 4.1 90 4.5 5.5 82 TIE CREEK 6870 2.2 1.5 147 3.5 4.3 81 ----- ----- Basin wide percent of average 91 74 BELLE FOURCHE BLIND PARK 6890 1.8 2.5 72 3.6 5.3 68 COLE CANYON 5910 1.7 2.4 71 2.4 -M * NORTH RAPID CREEK 6130 2.1 2.4 88 3.1 4.5 69 ----- ----- Basin wide percent of average 77 68 UPPER N. PLATTE RIVER COLUMBINE 9400 9.2 7.1 130 11.2 8.7 129 DIVIDE PEAK 8800 7.1 6.9 103 7.7 7.9 97 ELK RIVER 8700 7.8 4.8 162 9.6 6.9 139 JOE WRIGHT 10120 5.2 7.7 68 7.7 9.6 80 NORTH FRENCH CREEK 10100 9.1 10.3 88 8.8 9.5 93 OLD BATTLE 10000 12.7 11.8 108 13.6 12.3 111 SAGE CREEK BASIN 7850 4.7 4.0 118 5.9 4.6 128 SOUTH BRUSH CREEK 8400 3.3 3.9 85 4.0 6.4 62 TOWER 10500 17.5 16.3 107 18.0 13.9 129 WEBBER SPRINGS 9200 9.6 8.9 108 10.9 10.1 108 WILLOW CREEK PASS 9540 3.8 4.5 84 3.7 5.3 70 ----- ----- Basin wide percent of average 104 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.9 8.1 85 6.4 8.0 80 CASPER MTN. 7900 3.6 5.7 63 3.2 6.1 52 DEADMAN HILL 10220 4.2 6.2 68 6.1 6.5 94 DEER PARK 9700 4.9 5.6 88 6.2 8.8 70 LAPRELE CREEK 8320 3.4 4.2 81 4.3 5.2 83 RENO HILL 8400 4.4 5.4 81 4.1 6.0 68 ROACH 9700 7.5 5.6 134 8.0 6.7 119 SAND LAKE 10080 9.1 11.9 76 8.8 9.2 96 SOUTH PASS 9040 5.1 6.8 75 5.4 7.4 73 WINDY PEAK 7840 2.3 2.9 79 3.1 4.5 69 ----- ----- Basin wide percent of average 82 81 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 2.6 196 5.8 5.6 104 DIVIDE PEAK 8800 7.1 6.9 103 7.7 7.9 97 OLD BATTLE 10000 12.7 11.8 108 13.6 12.3 111 SANDSTONE RS 8150 3.7 3.5 106 8.1 7.0 116 WHISKEY PARK 8950 10.0 8.2 122 10.5 10.2 103 ----- ----- Basin wide percent of average 117 106 UPPER GREEN RIVER BIG SANDY OPENING 9100 4.4 5.4 81 4.3 5.3 81 BLIND BULL SUM 8650 9.3 9.9 94 7.6 8.5 89 EAST RIM DIVIDE 7930 3.9 4.5 87 4.3 4.5 96 ELKHART PARK G.S. 9400 4.6 4.8 96 4.9 5.4 91 GROS VENTRE SUMMIT 8775 4.8 5.3 91 4.2 5.2 81 KENDALL R.S. 7740 5.5 4.8 115 5.9 5.4 109 LOOMIS PARK 8240 6.3 6.1 103 6.6 6.4 103 NEW FORK LAKE 8340 3.9 4.0 98 3.8 4.7 81 SNIDER BASIN 8250 4.7 5.2 90 4.8 6.0 80 SPRING CREEK DIVIDE 9000 8.1 9.6 84 7.9 9.9 80 TRIPLE PEAK 8500 8.2 8.9 92 9.3 8.6 108 ----- ----- Basin wide percent of average 93 91 LOWER GREEN RIVER HAMS FORK 7840 3.3 3.8 87 3.4 4.5 76 HEWINTA 9500 -M 2.9 * -M 5.8 * HICKERSON PARK 9150 1.9 2.1 90 4.1 3.7 111 HOLE-IN-ROCK 9150 2.1 2.0 105 3.0 3.4 88 INDIAN CREEK 9425 7.7 9.4 82 6.8 9.3 73 KELLEY R.S. 8180 4.6 5.8 79 5.6 7.7 73 STEEL CREEK PARK 10100 4.1 5.2 79 4.6 6.3 73 ----- ----- Basin wide percent of average 84 79 UPPER BEAR RIVER BUG LAKE 7950 5.1 5.8 88 6.2 7.3 85 HAYDEN FORK 9400 4.1 4.4 93 3.0 7.9 38 KELLEY R.S. 8180 4.6 5.8 79 5.6 7.7 73 LILY LAKE 9050 4.1 4.0 102 5.3 7.0 76 MONTE CRISTO 8960 7.8 7.6 103 8.2 9.5 86 SALT RIVER SUMMIT 7600 4.3 3.9 110 5.1 6.8 75 TRIAL LAKE 9960 6.5 7.7 84 8.0 8.7 92 ----- ----- Basin wide percent of average 93 75 ----------------------------------------------------------------------------- -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.