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 THURSDAY: JANUARY 1 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.4 8.2 78 8.9 10.4 86 COTTONWOOD CREEK 7670 10.7 9.7 110 13.9 13.5 103 GRAND TARGHEE 9260 17.8 -M * 16.7 -M * GRANITE CREEK 6770 -M 7.6 * -M 9.5 * GRASSY LAKE 7265 12.8 14.7 87 16.6 17.3 96 GROS VENTRE SUMMIT 8750 7.1 6.9 103 8.0 6.4 125 GUNSIGHT PASS 9820 6.4 -M * 7.5 -M * LEWIS LAKE DIVIDE 7850 11.6 14.8 78 15.9 17.5 91 PHILLIPS BENCH 8200 12.0 12.6 95 14.5 13.5 107 SALT RIVER SUMMIT 7760 5.0 5.4 93 6.8 9.0 76 SNAKE RIVER STATION 6920 5.9 7.9 75 10.0 11.0 91 SPRING CREEK DIVIDE 9000 10.0 12.5 80 11.4 13.0 88 THUMB DIVIDE 7980 7.7 7.6 101 10.0 9.1 110 TOGWOTEE PASS 9580 12.7 11.7 109 14.1 12.0 118 TWO OCEAN PLATEAU 9240 15.4 13.5 114 12.2 13.5 90 WILLOW CREEK 8380 12.8 14.3 90 17.4 15.5 112 ----- ----- Basin wide percent of average 93 99 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 9.4 11.5 82 8.6 10.0 86 BLACK BEAR 8170 15.4 17.2 90 17.6 17.6 100 CANYON 7870 5.4 6.1 89 6.4 7.8 82 FISHER CREEK 9100 15.9 16.3 98 15.3 17.1 89 MADISON PLATEAU 7750 9.3 11.2 83 11.4 12.4 92 NORTHEAST ENTRANCE 7350 3.6 5.0 72 6.3 6.4 98 PARKER PEAK 9400 11.3 10.6 107 -M 8.2 * SYLVAN LAKE 8420 8.0 10.5 76 10.3 11.0 94 THUMB DIVIDE 7980 7.7 7.6 101 10.0 9.1 110 TWO OCEAN PLATEAU 9240 15.4 13.5 114 12.2 13.5 90 WHISKEY CREEK 6800 6.6 7.5 88 9.5 9.9 96 WHITE MILL 8700 10.0 11.1 90 10.5 12.8 82 WOLVERINE 7650 4.6 5.8 79 5.5 7.0 79 ----- ----- Basin wide percent of average 92 92 WIND RIVER BURROUGHS CREEK 8750 7.6 6.7 113 8.3 8.0 104 COLD SPRINGS 9630 3.7 4.6 80 5.4 5.7 95 DEER PARK 9700 6.3 6.7 94 8.9 10.9 82 HOBBS PARK 10100 6.1 7.6 80 6.3 6.4 98 LITTLE WARM 9370 5.2 5.3 98 6.8 6.7 101 SOUTH PASS 9040 6.2 8.2 76 8.2 9.2 89 ST. LAWRENCE ALT 8620 1.8 3.8 47 4.4 4.6 96 TOGWOTEE PASS 9580 12.7 11.7 109 14.1 12.0 118 TOWNSEND CREEK 8700 3.7 4.4 84 5.7 6.0 95 ----- ----- Basin wide percent of average 90 98 BIGHORN BASIN BALD MTN. 9380 10.2 9.7 105 9.1 8.5 107 BEAR TRAP MEADOW 8200 3.8 2.6 146 5.1 4.5 113 BLACKWATER 9780 10.6 12.0 88 9.8 10.8 91 BONE SPRINGS DIV 9350 9.6 7.8 123 7.9 7.3 108 EVENING STAR 9200 11.8 13.7 86 13.0 13.0 100 GRAVE SPRINGS 8550 3.1 4.0 78 4.6 4.9 94 KIRWIN 9550 6.4 5.9 108 7.0 5.9 119 MARQUETTE 8760 2.2 5.0 44 5.0 5.3 94 MIDDLE POWDER 7760 4.1 5.5 75 4.9 6.8 72 OWL CREEK 8975 3.1 2.7 115 3.3 2.9 114 POWDER RIVER PASS 9480 6.2 5.3 117 7.2 6.0 120 SHELL CREEK 9580 8.8 7.3 121 8.6 6.7 128 SYLVAN LAKE 8420 8.0 10.5 76 10.3 11.0 94 SYLVAN ROAD 7120 5.2 6.2 84 7.8 10.1 77 TIMBER CREEK 7950 2.5 3.0 83 4.8 3.7 130 YOUNTS PEAK 8350 8.7 7.9 110 8.2 8.2 100 ----- ----- Basin wide percent of average 96 101 SHOSHONE RIVER BLACKWATER 9780 10.6 12.0 88 9.8 10.8 91 EVENING STAR 9200 11.8 13.7 86 13.0 13.0 100 KIRWIN 9550 6.4 5.9 108 7.0 5.9 119 MARQUETTE 8760 2.2 5.0 44 5.0 5.3 94 SYLVAN LAKE 8420 8.0 10.5 76 10.3 11.0 94 SYLVAN ROAD 7120 5.2 6.2 84 7.8 10.1 77 YOUNTS PEAK 8350 8.7 7.9 110 8.2 8.2 100 ----- ----- Basin wide percent of average 86 95 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.8 2.6 146 5.1 4.5 113 BIG GOOSE 7990 3.9 4.4 89 6.1 4.5 136 BONE SPRINGS DIV 9350 9.6 7.8 123 7.9 7.3 108 BURGESS JUNCTION 7880 6.0 5.5 109 6.9 6.1 113 CLOUD PEAK RESERVOIR 9860 7.9 5.7 139 8.7 6.4 136 DOME LAKE 8880 6.3 6.1 103 7.8 6.9 113 GRAVE SPRINGS 8550 3.1 4.0 78 4.6 4.9 94 HANSEN SAWMILL 8360 2.9 3.3 88 5.6 4.3 130 MIDDLE POWDER 7760 4.1 5.5 75 4.9 6.8 72 POWDER RIVER PASS 9480 6.2 5.3 117 7.2 6.0 120 SUCKER CREEK 8880 7.3 5.2 140 9.2 6.7 137 TIE CREEK 6870 1.9 2.5 76 7.9 5.1 155 ----- ----- Basin wide percent of average 109 118 BELLE FOURCHE BLIND PARK 6890 4.6 3.5 131 8.6 6.2 139 COLE CANYON 5910 3.3 3.3 100 7.2 3.9 185 NORTH RAPID CREEK 6130 4.9 3.3 148 8.1 5.3 153 ----- ----- Basin wide percent of average 127 155 UPPER N. PLATTE RIVER COLUMBINE 9160 8.5 10.0 85 9.0 11.5 78 DIVIDE PEAK 8880 8.0 9.2 87 10.2 10.0 102 ELK RIVER 8700 8.5 7.2 118 9.5 8.9 107 JOE WRIGHT 10120 10.9 9.7 112 13.4 11.9 113 NORTH FRENCH CREEK 10130 12.3 13.4 92 12.2 12.0 102 OLD BATTLE 10000 12.8 14.6 88 16.0 16.0 100 SAGE CREEK BASIN 7850 4.0 5.3 75 5.8 5.8 100 SOUTH BRUSH CREEK 8440 6.0 5.1 118 7.8 7.8 100 TOWER 10500 13.7 20.6 67 16.4 17.9 92 WEBBER SPRINGS 9250 9.9 11.5 86 12.5 13.0 96 WILLOW CREEK PASS 9540 5.7 5.6 102 6.5 6.4 102 ----- ----- Basin wide percent of average 89 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 8.1 10.8 75 8.2 10.1 81 CASPER MTN. 7900 3.4 6.9 49 6.2 7.2 86 DEADMAN HILL 10220 6.8 7.6 89 7.3 7.9 92 DEER PARK 9700 6.3 6.7 94 8.9 10.9 82 LAPRELE CREEK 8375 2.6 5.3 49 3.6 6.2 58 RENO HILL 8400 4.0 6.6 61 5.4 7.2 75 ROACH 9700 6.9 7.3 95 8.3 8.5 98 SAND LAKE 10050 11.1 14.9 74 10.2 11.6 88 SOUTH PASS 9040 6.2 8.2 76 8.2 9.2 89 WINDY PEAK 7900 2.4 3.5 69 3.2 5.5 58 ----- ----- Basin wide percent of average 74 82 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.2 4.1 102 7.1 7.1 100 DIVIDE PEAK 8880 8.0 9.2 87 10.2 10.0 102 OLD BATTLE 10000 12.8 14.6 88 16.0 16.0 100 SANDSTONE RS 8150 5.8 5.3 109 8.2 8.9 92 WHISKEY PARK 8950 10.3 11.1 93 12.8 13.2 97 ----- ----- Basin wide percent of average 93 98 UPPER GREEN RIVER BIG SANDY OPENING 9080 5.6 6.9 81 6.1 6.6 92 BLIND BULL SUM 8650 9.9 13.2 75 9.6 11.1 86 EAST RIM DIVIDE 7930 3.6 5.9 61 6.6 5.8 114 ELKHART PARK G.S. 9400 6.4 6.3 102 7.9 6.7 118 GROS VENTRE SUMMIT 8750 7.1 6.9 103 8.0 6.4 125 GUNSIGHT PASS 9820 6.4 -M * 7.5 -M * KENDALL R.S. 7740 4.9 6.7 73 7.3 6.9 106 LOOMIS PARK 8240 7.1 8.0 89 9.5 8.3 114 NEW FORK LAKE 8340 5.9 5.4 109 5.9 5.9 100 SNIDER BASIN 8060 5.4 6.9 78 6.7 7.9 85 SPRING CREEK DIVIDE 9000 10.0 12.5 80 11.4 13.0 88 TRIPLE PEAK 8500 10.2 11.9 86 11.8 11.2 105 ----- ----- Basin wide percent of average 84 101 LOWER GREEN RIVER HAMS FORK 7840 3.2 5.5 58 5.2 5.8 90 HEWINTA 9519 2.4 4.1 59 5.4 7.0 77 HICKERSON PARK 9145 1.1 2.9 38 3.7 4.2 88 HOLE-IN-ROCK 9150 1.6 2.7 59 3.7 3.9 95 INDIAN CREEK 9425 9.3 12.5 74 9.7 12.2 80 KELLEY R.S. 8180 6.2 7.6 82 7.9 10.1 78 STEEL CREEK PARK 10200 4.0 6.7 60 6.9 7.6 91 ----- ----- Basin wide percent of average 66 84 UPPER BEAR RIVER BUG LAKE 7950 4.3 8.3 52 7.2 9.2 78 HAYDEN FORK 9212 6.7 6.3 106 9.3 10.0 93 KELLEY R.S. 8180 6.2 7.6 82 7.9 10.1 78 LILY LAKE 9156 5.4 5.5 98 7.1 8.6 83 MONTE CRISTO 8960 9.8 11.0 89 11.2 12.1 93 SALT RIVER SUMMIT 7760 5.0 5.4 93 6.8 9.0 76 TRIAL LAKE 9992 9.3 10.5 89 9.7 11.2 87 ----- ----- Basin wide percent of average 86 84 ----------------------------------------------------------------------------- -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.