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 27 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 3.5 7.4 47 6.0 9.6 62 COTTONWOOD CREEK 7670 4.1 8.7 47 8.0 12.4 65 GRAND TARGHEE 9260 13.9 -M * 10.7 -M * GRANITE CREEK 6770 2.6 6.8 38 5.2 8.7 60 GRASSY LAKE 7265 7.6 13.3 57 9.8 15.7 62 GROS VENTRE SUMMIT 8750 3.3 6.3 52 3.3 6.0 55 GUNSIGHT PASS 9820 2.8 -M * 4.2 -M * LEWIS LAKE DIVIDE 7850 -M 13.3 * -M 16.0 * PHILLIPS BENCH 8200 5.3 11.5 46 7.2 12.3 59 SALT RIVER SUMMIT 7760 2.2 4.8 46 4.4 8.1 54 SNAKE RIVER STATION 6920 3.6 7.1 51 7.8 10.2 76 SPRING CREEK DIVIDE 9000 6.6 11.5 57 7.2 11.8 61 THUMB DIVIDE 7980 4.4 6.9 64 7.2 8.4 86 TOGWOTEE PASS 9580 7.6 10.7 71 7.8 11.1 70 TWO OCEAN PLATEAU 9240 10.5 12.5 84 8.2 12.5 66 WILLOW CREEK 8380 8.2 13.0 63 11.9 14.3 83 ----- ----- Basin wide percent of average 58 67 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.8 10.5 74 6.4 9.2 70 BLACK BEAR 8170 11.7 15.7 75 12.7 16.2 78 CANYON 7870 4.4 5.4 81 5.9 7.2 82 FISHER CREEK 9100 12.4 15.0 83 12.0 15.7 76 MADISON PLATEAU 7750 7.5 10.2 74 10.5 11.5 91 NORTHEAST ENTRANCE 7350 2.1 4.5 47 4.9 6.0 82 PARKER PEAK 9400 9.0 9.7 93 6.4 7.7 83 SYLVAN LAKE 8420 5.6 9.6 58 7.7 10.3 75 THUMB DIVIDE 7980 4.4 6.9 64 7.2 8.4 86 TWO OCEAN PLATEAU 9240 10.5 12.5 84 8.2 12.5 66 WHISKEY CREEK 6800 3.7 6.7 55 6.6 9.1 73 WHITE MILL 8700 8.9 10.3 86 8.0 11.9 67 WOLVERINE 7650 3.5 5.2 67 3.6 6.6 55 ----- ----- Basin wide percent of average 75 76 WIND RIVER BURROUGHS CREEK 8750 -M 6.2 * 3.4 7.4 46 COLD SPRINGS 9630 3.0 4.4 68 4.0 5.4 74 DEER PARK 9700 7.1 6.1 116 8.4 10.2 82 HOBBS PARK 10100 6.7 7.2 93 6.4 6.1 105 LITTLE WARM 9370 3.0 5.0 60 3.6 6.3 57 SOUTH PASS 9040 6.5 7.6 86 7.3 8.6 85 ST. LAWRENCE ALT 8620 2.7 3.6 75 4.7 4.4 107 TOGWOTEE PASS 9580 7.6 10.7 71 7.8 11.1 70 TOWNSEND CREEK 8700 4.6 4.1 112 6.5 5.8 112 ----- ----- Basin wide percent of average 85 80 BIGHORN BASIN BALD MTN. 9380 6.1 9.1 67 4.6 7.8 59 BEAR TRAP MEADOW 8200 2.1 2.4 88 3.0 4.3 70 BLACKWATER 9780 9.2 11.1 83 8.2 10.2 80 BONE SPRINGS DIV 9350 5.7 7.4 77 4.8 6.8 71 EVENING STAR 9200 9.7 12.6 77 10.9 12.0 91 GRAVE SPRINGS 8550 3.7 3.7 100 5.0 4.6 109 KIRWIN 9550 4.2 5.5 76 3.7 5.6 66 MARQUETTE 8760 3.3 4.8 69 3.9 5.1 76 MIDDLE POWDER 7760 4.7 5.3 89 4.6 6.5 71 OWL CREEK 8975 3.1 2.5 124 2.6 2.8 93 POWDER RIVER PASS 9480 3.5 4.9 71 3.7 5.6 66 SHELL CREEK 9580 5.5 6.9 80 4.9 6.3 78 SYLVAN LAKE 8420 5.6 9.6 58 7.7 10.3 75 SYLVAN ROAD 7120 3.1 5.6 55 6.3 9.6 66 TIMBER CREEK 7950 1.4 2.9 48 3.0 3.6 83 YOUNTS PEAK 8350 5.3 7.2 74 4.2 7.6 55 ----- ----- Basin wide percent of average 75 75 SHOSHONE RIVER BLACKWATER 9780 9.2 11.1 83 8.2 10.2 80 EVENING STAR 9200 9.7 12.6 77 10.9 12.0 91 KIRWIN 9550 4.2 5.5 76 3.7 5.6 66 MARQUETTE 8760 3.3 4.8 69 3.9 5.1 76 SYLVAN LAKE 8420 5.6 9.6 58 7.7 10.3 75 SYLVAN ROAD 7120 3.1 5.6 55 6.3 9.6 66 YOUNTS PEAK 8350 5.3 7.2 74 4.2 7.6 55 ----- ----- Basin wide percent of average 72 74 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.1 2.4 88 3.0 4.3 70 BIG GOOSE 7990 3.7 4.0 92 5.0 4.3 116 BONE SPRINGS DIV 9350 5.7 7.4 77 4.8 6.8 71 BURGESS JUNCTION 7880 5.3 5.2 102 5.2 5.7 91 CLOUD PEAK RESERVOIR 9860 5.8 5.4 107 4.5 6.1 74 DOME LAKE 8880 3.7 5.7 65 5.5 6.5 85 GRAVE SPRINGS 8550 3.7 3.7 100 5.0 4.6 109 HANSEN SAWMILL 8360 2.2 3.0 73 3.1 4.1 76 MIDDLE POWDER 7760 4.7 5.3 89 4.6 6.5 71 POWDER RIVER PASS 9480 3.5 4.9 71 3.7 5.6 66 SUCKER CREEK 8880 5.9 5.0 118 6.3 6.3 100 TIE CREEK 6870 .4 2.3 17 5.0 4.8 104 ----- ----- Basin wide percent of average 86 85 BELLE FOURCHE BLIND PARK 6890 3.1 3.2 97 6.5 5.9 110 COLE CANYON 5910 2.4 3.1 77 5.4 3.7 146 NORTH RAPID CREEK 6130 4.9 3.0 163 6.5 5.0 130 ----- ----- Basin wide percent of average 112 126 UPPER N. PLATTE RIVER COLUMBINE 9160 6.5 8.9 73 9.3 10.5 89 DIVIDE PEAK 8880 8.0 8.4 95 11.0 9.3 118 ELK RIVER 8700 5.4 6.3 86 8.5 8.1 105 JOE WRIGHT 10120 8.2 9.0 91 9.7 11.1 87 NORTH FRENCH CREEK 10130 14.0 12.3 114 14.3 11.1 129 OLD BATTLE 10000 13.9 13.7 101 15.6 14.7 106 SAGE CREEK BASIN 7850 5.1 4.9 104 6.4 5.4 119 SOUTH BRUSH CREEK 8440 5.7 4.7 121 9.5 7.3 130 TOWER 10500 14.3 19.0 75 15.0 16.5 91 WEBBER SPRINGS 9250 9.2 10.6 87 12.8 12.0 107 WILLOW CREEK PASS 9540 3.4 5.2 65 5.8 6.1 95 ----- ----- Basin wide percent of average 91 105 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 9.8 102 11.0 9.4 117 CASPER MTN. 7900 -M 6.5 * -M 6.9 * DEADMAN HILL 10220 -M 7.1 * 9.2 7.3 126 DEER PARK 9700 7.1 6.1 116 8.4 10.2 82 LAPRELE CREEK 8375 4.1 4.9 84 6.6 5.8 114 RENO HILL 8400 7.2 6.2 116 8.3 6.8 122 ROACH 9700 8.4 6.7 125 10.6 7.8 136 SAND LAKE 10050 14.1 13.9 101 14.3 10.7 134 SOUTH PASS 9040 6.5 7.6 86 7.3 8.6 85 WINDY PEAK 7900 3.6 3.3 109 5.8 5.2 112 ----- ----- Basin wide percent of average 104 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.5 3.5 100 5.8 6.6 88 DIVIDE PEAK 8880 8.0 8.4 95 11.0 9.3 118 OLD BATTLE 10000 13.9 13.7 101 15.6 14.7 106 SANDSTONE RS 8150 3.0 4.6 65 6.6 8.2 80 WHISKEY PARK 8950 7.2 10.0 72 11.9 12.1 98 ----- ----- Basin wide percent of average 89 100 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 6.4 66 4.3 6.1 70 BLIND BULL SUM 8650 6.2 12.1 51 5.1 10.2 50 EAST RIM DIVIDE 7930 -M 5.4 * 3.3 5.3 62 ELKHART PARK G.S. 9400 3.4 5.8 59 3.9 6.2 63 GROS VENTRE SUMMIT 8750 3.3 6.3 52 3.3 6.0 55 GUNSIGHT PASS 9820 2.8 -M * 4.2 -M * KENDALL R.S. 7740 1.8 6.0 30 4.0 6.3 63 LOOMIS PARK 8240 2.4 7.4 32 4.4 7.6 58 NEW FORK LAKE 8340 1.2 4.9 24 2.9 5.5 53 SNIDER BASIN 8060 3.0 6.3 48 4.4 7.2 61 SPRING CREEK DIVIDE 9000 6.6 11.5 57 7.2 11.8 61 TRIPLE PEAK 8500 7.5 10.8 69 8.1 10.2 79 ----- ----- Basin wide percent of average 51 62 LOWER GREEN RIVER HAMS FORK 7840 1.5 4.9 31 4.3 5.3 81 HEWINTA 9519 2.2 3.7 59 4.6 6.6 70 HICKERSON PARK 9145 2.3 2.6 88 4.3 4.0 108 HOLE-IN-ROCK 9150 2.2 2.4 92 4.3 3.7 116 INDIAN CREEK 9425 7.2 11.4 63 7.0 11.1 63 KELLEY R.S. 8180 3.3 7.0 47 5.1 9.2 55 STEEL CREEK PARK 10200 4.5 6.2 73 6.2 7.1 87 ----- ----- Basin wide percent of average 61 76 UPPER BEAR RIVER BUG LAKE 7950 2.7 7.4 36 6.6 8.5 78 HAYDEN FORK 9212 4.7 5.6 84 7.6 9.2 83 KELLEY R.S. 8180 3.3 7.0 47 5.1 9.2 55 LILY LAKE 9156 4.3 5.0 86 6.1 8.1 75 MONTE CRISTO 8960 6.3 9.8 64 7.8 11.2 70 SALT RIVER SUMMIT 7760 2.2 4.8 46 4.4 8.1 54 TRIAL LAKE 9992 5.3 9.5 56 5.6 10.3 54 ----- ----- Basin wide percent of average 59 67 ----------------------------------------------------------------------------- -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 1961-90. 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.