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 SATURDAY: JANUARY 31 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.9 12.6 87 13.7 14.7 93 COTTONWOOD CREEK 7670 17.7 14.1 126 21.2 18.5 115 GRAND TARGHEE 9260 26.8 -M * 23.5 -M * GRANITE CREEK 6770 11.4 12.2 93 16.0 13.6 118 GRASSY LAKE 7265 20.2 22.7 89 23.6 24.8 95 GROS VENTRE SUMMIT 8750 8.7 9.4 93 10.1 8.6 117 GUNSIGHT PASS 9820 9.8 -M * 10.8 -M * LEWIS LAKE DIVIDE 7850 17.2 22.8 75 21.6 24.7 87 PHILLIPS BENCH 8200 17.8 18.4 97 19.9 19.4 103 SALT RIVER SUMMIT 7760 8.8 9.1 97 10.3 12.5 82 SNAKE RIVER STATION 6920 11.1 12.5 89 15.2 15.4 99 SPRING CREEK DIVIDE 9000 17.6 17.2 102 18.1 18.2 99 THUMB DIVIDE 7980 11.1 11.6 96 12.8 12.6 102 TOGWOTEE PASS 9580 19.3 16.7 116 21.2 16.7 127 TWO OCEAN PLATEAU 9240 24.5 18.8 130 18.7 18.3 102 WILLOW CREEK 8380 22.1 20.1 110 26.4 21.6 122 ----- ----- Basin wide percent of average 100 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.4 16.1 96 14.1 13.9 101 BLACK BEAR 8170 21.1 25.4 83 22.4 25.9 86 CANYON 7870 8.5 8.9 96 9.5 10.7 89 FISHER CREEK 9100 24.3 23.6 103 22.9 24.4 94 MADISON PLATEAU 7750 12.4 16.1 77 14.3 17.3 83 NORTHEAST ENTRANCE 7350 7.2 7.7 94 9.5 8.8 108 PARKER PEAK 9400 17.1 14.7 116 12.2 11.0 111 SYLVAN LAKE 8420 12.8 15.0 85 15.0 14.7 102 THUMB DIVIDE 7980 11.1 11.6 96 12.8 12.6 102 TWO OCEAN PLATEAU 9240 24.5 18.8 130 18.7 18.3 102 WHISKEY CREEK 6800 8.9 11.0 81 12.0 13.7 88 WHITE MILL 8700 16.0 15.9 101 15.9 18.1 88 WOLVERINE 7650 8.3 8.6 97 8.5 9.1 93 ----- ----- Basin wide percent of average 97 95 WIND RIVER BURROUGHS CREEK 8750 12.0 10.1 119 12.8 11.2 114 COLD SPRINGS 9630 5.0 6.0 83 6.7 7.1 94 DEER PARK 9700 6.5 11.7 56 10.1 14.4 70 HOBBS PARK 10100 7.0 9.8 71 7.2 8.1 89 LITTLE WARM 9370 7.5 7.7 97 9.6 9.0 107 SOUTH PASS 9040 7.2 11.3 64 9.1 12.1 75 ST. LAWRENCE ALT 8620 2.1 4.7 45 4.9 5.7 86 TOGWOTEE PASS 9580 19.3 16.7 116 21.2 16.7 127 TOWNSEND CREEK 8700 4.4 5.6 79 6.5 7.2 90 ----- ----- Basin wide percent of average 85 96 BIGHORN BASIN BALD MTN. 9380 13.9 13.4 104 11.5 11.7 98 BEAR TRAP MEADOW 8200 6.1 3.5 174 6.7 5.5 122 BLACKWATER 9780 16.3 16.4 99 15.0 14.1 106 BONE SPRINGS DIV 9350 14.2 10.5 135 11.1 9.5 117 EVENING STAR 9200 20.3 19.5 104 21.0 17.5 120 GRAVE SPRINGS 8550 5.4 5.6 96 6.6 6.4 103 KIRWIN 9550 8.8 7.6 116 9.9 7.6 130 MARQUETTE 8760 3.0 5.9 51 6.0 6.2 97 MIDDLE POWDER 7760 6.6 7.1 93 6.6 8.2 80 OWL CREEK 8975 3.8 3.4 112 3.8 3.7 103 POWDER RIVER PASS 9480 9.4 7.2 131 10.5 8.2 128 SHELL CREEK 9580 12.5 9.9 126 12.2 9.2 133 SYLVAN LAKE 8420 12.8 15.0 85 15.0 14.7 102 SYLVAN ROAD 7120 10.2 8.6 119 13.2 13.2 100 TIMBER CREEK 7950 3.0 3.6 83 5.9 4.5 131 YOUNTS PEAK 8350 13.8 11.9 116 12.3 11.3 109 ----- ----- Basin wide percent of average 107 110 SHOSHONE RIVER BLACKWATER 9780 16.3 16.4 99 15.0 14.1 106 EVENING STAR 9200 20.3 19.5 104 21.0 17.5 120 KIRWIN 9550 8.8 7.6 116 9.9 7.6 130 MARQUETTE 8760 3.0 5.9 51 6.0 6.2 97 SYLVAN LAKE 8420 12.8 15.0 85 15.0 14.7 102 SYLVAN ROAD 7120 10.2 8.6 119 13.2 13.2 100 YOUNTS PEAK 8350 13.8 11.9 116 12.3 11.3 109 ----- ----- Basin wide percent of average 100 109 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 3.5 174 6.7 5.5 122 BIG GOOSE 7990 6.1 5.9 103 8.2 5.6 146 BONE SPRINGS DIV 9350 14.2 10.5 135 11.1 9.5 117 BURGESS JUNCTION 7880 8.8 7.4 119 9.4 7.8 121 CLOUD PEAK RESERVOIR 9860 12.2 8.0 152 11.8 8.1 146 DOME LAKE 8880 8.7 7.9 110 10.7 8.6 124 GRAVE SPRINGS 8550 5.4 5.6 96 6.6 6.4 103 HANSEN SAWMILL 8360 4.5 4.2 107 7.3 5.3 138 MIDDLE POWDER 7760 6.6 7.1 93 6.6 8.2 80 POWDER RIVER PASS 9480 9.4 7.2 131 10.5 8.2 128 SUCKER CREEK 8880 10.5 7.1 148 12.3 8.7 141 TIE CREEK 6870 3.8 4.0 95 10.2 6.8 150 ----- ----- Basin wide percent of average 123 126 BELLE FOURCHE BLIND PARK 6890 7.3 5.2 140 11.6 7.8 149 COLE CANYON 5910 4.5 4.4 102 9.2 4.7 196 NORTH RAPID CREEK 6130 6.9 4.9 141 10.1 6.3 160 ----- ----- Basin wide percent of average 129 164 UPPER N. PLATTE RIVER COLUMBINE 9160 18.3 16.2 113 17.3 16.5 105 DIVIDE PEAK 8880 14.2 12.9 110 16.2 13.6 119 ELK RIVER 8700 16.1 12.1 133 15.4 12.6 122 JOE WRIGHT 10120 16.1 13.7 118 19.6 16.1 122 NORTH FRENCH CREEK 10130 21.4 18.3 117 20.6 16.2 127 OLD BATTLE 10000 21.0 19.9 106 24.9 22.2 112 SAGE CREEK BASIN 7850 7.5 7.5 100 8.8 7.9 111 SOUTH BRUSH CREEK 8440 9.6 7.3 132 11.1 10.8 103 TOWER 10500 28.5 29.8 96 28.5 25.2 113 WEBBER SPRINGS 9250 15.9 15.9 100 18.9 17.9 106 WILLOW CREEK PASS 9540 8.4 7.5 112 8.2 8.3 99 ----- ----- Basin wide percent of average 110 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.3 15.2 94 13.6 14.1 96 CASPER MTN. 7900 5.9 9.0 66 8.5 8.9 96 DEADMAN HILL 10220 11.0 10.5 105 11.6 10.5 110 DEER PARK 9700 6.5 11.7 56 10.1 14.4 70 LAPRELE CREEK 8375 5.2 7.2 72 6.2 8.1 77 RENO HILL 8400 7.1 8.4 85 8.3 9.3 89 ROACH 9700 11.2 10.9 103 12.9 11.6 111 SAND LAKE 10050 17.9 19.8 90 16.5 15.8 104 SOUTH PASS 9040 7.2 11.3 64 9.1 12.1 75 WINDY PEAK 7900 5.1 4.5 113 5.8 6.9 84 ----- ----- Basin wide percent of average 84 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.6 7.7 125 11.8 9.8 120 DIVIDE PEAK 8880 14.2 12.9 110 16.2 13.6 119 OLD BATTLE 10000 21.0 19.9 106 24.9 22.2 112 SANDSTONE RS 8150 10.4 9.6 108 13.3 12.4 107 WHISKEY PARK 8950 20.8 18.3 114 22.3 19.2 116 ----- ----- Basin wide percent of average 111 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.9 9.4 84 8.0 8.9 90 BLIND BULL SUM 8650 17.0 18.3 93 14.2 15.3 93 EAST RIM DIVIDE 7930 6.6 8.4 79 9.2 8.0 115 ELKHART PARK G.S. 9400 9.3 8.7 107 10.4 8.8 118 GROS VENTRE SUMMIT 8750 8.7 9.4 93 10.1 8.6 117 GUNSIGHT PASS 9820 9.8 -M * 10.8 -M * KENDALL R.S. 7740 7.9 9.7 81 10.2 9.7 105 LOOMIS PARK 8240 11.7 11.1 105 14.1 11.7 121 NEW FORK LAKE 8340 8.7 7.6 114 8.3 7.8 106 SNIDER BASIN 8060 9.6 9.7 99 10.3 11.0 94 SPRING CREEK DIVIDE 9000 17.6 17.2 102 18.1 18.2 99 TRIPLE PEAK 8500 16.9 16.5 102 18.7 16.0 117 ----- ----- Basin wide percent of average 97 106 LOWER GREEN RIVER HAMS FORK 7840 6.6 8.3 80 7.4 8.3 89 HEWINTA 9519 5.1 6.6 77 7.8 9.2 85 HICKERSON PARK 9145 1.8 4.4 41 4.3 5.2 83 HOLE-IN-ROCK 9150 2.2 4.1 54 4.4 4.7 94 INDIAN CREEK 9425 14.5 17.4 83 13.8 16.7 83 KELLEY R.S. 8180 9.4 10.6 89 11.0 13.8 80 STEEL CREEK PARK 10200 6.6 9.3 71 9.8 10.1 97 ----- ----- Basin wide percent of average 76 86 UPPER BEAR RIVER BUG LAKE 7950 9.6 13.0 74 11.1 12.8 87 HAYDEN FORK 9212 10.7 9.7 110 13.3 13.5 99 KELLEY R.S. 8180 9.4 10.6 89 11.0 13.8 80 LILY LAKE 9156 8.5 8.1 105 10.3 11.4 90 MONTE CRISTO 8960 16.1 18.0 89 16.7 16.6 101 SALT RIVER SUMMIT 7760 8.8 9.1 97 10.3 12.5 82 TRIAL LAKE 9992 14.5 15.5 94 14.1 15.7 90 ----- ----- Basin wide percent of average 92 90 ----------------------------------------------------------------------------- -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.