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: FEBRUARY 9 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.3 13.7 82 13.9 15.9 87 COTTONWOOD CREEK 7670 18.0 15.3 118 21.5 19.8 109 GRAND TARGHEE 9260 27.4 -M * 23.9 -M * GRANITE CREEK 6770 11.7 13.4 87 16.2 14.8 109 GRASSY LAKE 7265 21.4 24.9 86 24.8 26.7 93 GROS VENTRE SUMMIT 8750 8.9 10.0 89 10.5 9.2 114 GUNSIGHT PASS 9820 10.3 -M * 11.3 -M * LEWIS LAKE DIVIDE 7850 18.2 25.0 73 22.3 26.6 84 PHILLIPS BENCH 8200 18.1 20.0 90 20.4 20.9 98 SALT RIVER SUMMIT 7760 9.1 10.1 90 10.7 13.5 79 SNAKE RIVER STATION 6920 11.6 13.8 84 15.6 16.7 93 SPRING CREEK DIVIDE 9000 18.0 18.7 96 18.6 19.4 96 THUMB DIVIDE 7980 11.3 12.7 89 13.1 13.6 96 TOGWOTEE PASS 9580 19.7 18.0 109 21.6 17.9 121 TWO OCEAN PLATEAU 9240 24.9 20.2 123 19.2 19.8 97 WILLOW CREEK 8380 22.6 21.7 104 27.2 23.2 117 ----- ----- Basin wide percent of average 95 99 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.9 17.1 93 14.5 14.8 98 BLACK BEAR 8170 22.2 27.2 82 23.4 28.0 84 CANYON 7870 8.7 9.5 92 9.6 11.4 84 FISHER CREEK 9100 25.2 25.1 100 23.8 26.2 91 MADISON PLATEAU 7750 12.9 17.2 75 14.8 18.7 79 NORTHEAST ENTRANCE 7350 7.5 8.2 91 9.8 9.4 104 PARKER PEAK 9400 17.7 15.5 114 12.7 11.8 108 SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98 THUMB DIVIDE 7980 11.3 12.7 89 13.1 13.6 96 TWO OCEAN PLATEAU 9240 24.9 20.2 123 19.2 19.8 97 WHISKEY CREEK 6800 9.3 11.9 78 12.3 14.7 84 WHITE MILL 8700 16.6 17.0 98 16.5 19.5 85 WOLVERINE 7650 8.8 9.1 97 8.8 9.7 91 ----- ----- Basin wide percent of average 94 91 WIND RIVER BURROUGHS CREEK 8750 12.3 10.6 116 12.9 11.9 108 COLD SPRINGS 9630 5.0 6.2 81 6.7 7.4 91 DEER PARK 9700 6.6 12.3 54 10.3 15.6 66 HOBBS PARK 10100 7.1 10.2 70 7.3 8.6 85 LITTLE WARM 9370 7.7 8.1 95 9.8 9.6 102 SOUTH PASS 9040 7.3 11.9 61 9.2 13.1 70 ST. LAWRENCE ALT 8620 2.0 5.0 40 4.9 6.1 80 TOGWOTEE PASS 9580 19.7 18.0 109 21.6 17.9 121 TOWNSEND CREEK 8700 4.4 5.9 75 6.6 7.7 86 ----- ----- Basin wide percent of average 82 91 BIGHORN BASIN BALD MTN. 9380 14.3 14.0 102 11.8 12.4 95 BEAR TRAP MEADOW 8200 6.2 3.7 168 6.7 5.8 116 BLACKWATER 9780 16.4 17.4 94 15.1 15.0 101 BONE SPRINGS DIV 9350 14.5 11.1 131 11.4 10.1 113 EVENING STAR 9200 20.8 21.0 99 21.6 18.7 116 GRAVE SPRINGS 8550 5.4 6.1 89 6.5 6.7 97 KIRWIN 9550 8.8 8.0 110 9.9 8.0 124 MARQUETTE 8760 2.9 6.1 48 5.7 6.5 88 MIDDLE POWDER 7760 6.6 7.7 86 6.6 8.6 77 OWL CREEK 8975 3.8 3.5 109 3.7 3.9 95 POWDER RIVER PASS 9480 9.4 7.5 125 10.7 8.8 122 SHELL CREEK 9580 13.0 10.3 126 12.5 9.8 128 SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98 SYLVAN ROAD 7120 10.4 9.5 109 13.5 14.0 96 TIMBER CREEK 7950 2.9 3.7 78 5.9 4.7 126 YOUNTS PEAK 8350 14.1 12.6 112 12.9 12.0 108 ----- ----- Basin wide percent of average 103 106 SHOSHONE RIVER BLACKWATER 9780 16.4 17.4 94 15.1 15.0 101 EVENING STAR 9200 20.8 21.0 99 21.6 18.7 116 KIRWIN 9550 8.8 8.0 110 9.9 8.0 124 MARQUETTE 8760 2.9 6.1 48 5.7 6.5 88 SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98 SYLVAN ROAD 7120 10.4 9.5 109 13.5 14.0 96 YOUNTS PEAK 8350 14.1 12.6 112 12.9 12.0 108 ----- ----- Basin wide percent of average 96 105 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.2 3.7 168 6.7 5.8 116 BIG GOOSE 7990 6.1 6.4 95 8.2 6.0 137 BONE SPRINGS DIV 9350 14.5 11.1 131 11.4 10.1 113 BURGESS JUNCTION 7880 8.9 7.7 116 9.6 8.3 116 CLOUD PEAK RESERVOIR 9860 12.5 8.5 147 12.1 8.6 141 DOME LAKE 8880 8.9 8.4 106 10.9 9.1 120 GRAVE SPRINGS 8550 5.4 6.1 89 6.5 6.7 97 HANSEN SAWMILL 8360 4.4 4.4 100 7.3 5.6 130 MIDDLE POWDER 7760 6.6 7.7 86 6.6 8.6 77 POWDER RIVER PASS 9480 9.4 7.5 125 10.7 8.8 122 SUCKER CREEK 8880 10.5 7.7 136 12.5 9.2 136 TIE CREEK 6870 3.7 4.2 88 10.1 7.1 142 ----- ----- Basin wide percent of average 116 120 BELLE FOURCHE BLIND PARK 6890 7.5 5.7 132 11.9 8.2 145 COLE CANYON 5910 4.6 4.8 96 9.2 4.9 188 NORTH RAPID CREEK 6130 7.2 5.5 131 10.2 6.6 155 ----- ----- Basin wide percent of average 121 159 UPPER N. PLATTE RIVER COLUMBINE 9160 18.8 18.1 104 18.0 17.8 101 DIVIDE PEAK 8880 15.0 13.7 109 16.9 14.6 116 ELK RIVER 8700 16.9 13.4 126 16.0 13.6 118 JOE WRIGHT 10120 16.4 14.9 110 19.9 17.2 116 NORTH FRENCH CREEK 10130 22.1 19.5 113 21.0 17.4 121 OLD BATTLE 10000 22.0 21.7 101 26.2 24.0 109 SAGE CREEK BASIN 7850 8.0 7.9 101 9.2 8.4 110 SOUTH BRUSH CREEK 8440 9.8 8.0 123 11.5 11.6 99 TOWER 10500 29.8 32.3 92 29.2 27.2 107 WEBBER SPRINGS 9250 16.4 17.4 94 19.4 19.1 102 WILLOW CREEK PASS 9540 9.0 8.1 111 8.3 8.9 93 ----- ----- Basin wide percent of average 105 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.7 16.4 90 13.9 15.1 92 CASPER MTN. 7900 6.1 9.6 64 8.5 9.5 89 DEADMAN HILL 10220 11.4 11.2 102 11.8 11.3 104 DEER PARK 9700 6.6 12.3 54 10.3 15.6 66 LAPRELE CREEK 8375 5.4 7.7 70 6.4 8.6 74 RENO HILL 8400 7.2 8.9 81 8.4 9.9 85 ROACH 9700 11.6 11.9 97 13.3 12.4 107 SAND LAKE 10050 18.8 21.2 89 17.3 16.8 103 SOUTH PASS 9040 7.3 11.9 61 9.2 13.1 70 WINDY PEAK 7900 5.1 5.0 102 5.9 7.3 81 ----- ----- Basin wide percent of average 81 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.8 8.4 129 12.3 10.5 117 DIVIDE PEAK 8880 15.0 13.7 109 16.9 14.6 116 OLD BATTLE 10000 22.0 21.7 101 26.2 24.0 109 SANDSTONE RS 8150 10.9 10.5 104 13.8 13.4 103 WHISKEY PARK 8950 22.0 20.1 109 23.3 20.5 114 ----- ----- Basin wide percent of average 108 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.2 10.2 80 8.3 9.6 86 BLIND BULL SUM 8650 17.7 19.6 90 14.7 16.4 90 EAST RIM DIVIDE 7930 6.8 9.2 74 9.4 8.6 109 ELKHART PARK G.S. 9400 9.7 9.4 103 10.7 9.4 114 GROS VENTRE SUMMIT 8750 8.9 10.0 89 10.5 9.2 114 GUNSIGHT PASS 9820 10.3 -M * 11.3 -M * KENDALL R.S. 7740 8.4 10.5 80 10.6 10.5 101 LOOMIS PARK 8240 12.1 12.1 100 14.5 12.6 115 NEW FORK LAKE 8340 9.0 8.2 110 8.6 8.3 104 SNIDER BASIN 8060 9.8 10.5 93 10.5 11.8 89 SPRING CREEK DIVIDE 9000 18.0 18.7 96 18.6 19.4 96 TRIPLE PEAK 8500 17.1 17.8 96 18.9 17.3 109 ----- ----- Basin wide percent of average 92 102 LOWER GREEN RIVER HAMS FORK 7840 6.9 9.1 76 7.6 8.9 85 HEWINTA 9519 5.3 7.3 73 8.0 9.9 81 HICKERSON PARK 9145 2.1 4.8 44 4.7 5.5 85 HOLE-IN-ROCK 9150 2.4 4.6 52 4.5 5.0 90 INDIAN CREEK 9425 14.9 18.8 79 14.2 17.9 79 KELLEY R.S. 8180 9.7 11.5 84 11.5 14.8 78 STEEL CREEK PARK 10200 6.8 10.3 66 9.8 10.9 90 ----- ----- Basin wide percent of average 72 83 UPPER BEAR RIVER BUG LAKE 7950 10.7 14.3 75 11.5 13.8 83 HAYDEN FORK 9212 11.1 10.7 104 13.8 14.5 95 KELLEY R.S. 8180 9.7 11.5 84 11.5 14.8 78 LILY LAKE 9156 8.8 8.9 99 10.6 12.2 87 MONTE CRISTO 8960 16.5 20.0 82 17.3 17.9 97 SALT RIVER SUMMIT 7760 9.1 10.1 90 10.7 13.5 79 TRIAL LAKE 9992 15.4 17.0 91 15.2 17.0 89 ----- ----- Basin wide percent of average 88 87 ----------------------------------------------------------------------------- -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.