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 FRIDAY: FEBRUARY 6 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.0 13.3 83 13.8 15.5 89 COTTONWOOD CREEK 7670 17.8 14.9 119 21.3 19.4 110 GRAND TARGHEE 9260 27.1 -M * 23.6 -M * GRANITE CREEK 6770 11.5 13.0 88 16.0 14.4 111 GRASSY LAKE 7265 20.4 24.2 84 23.7 26.1 91 GROS VENTRE SUMMIT 8750 8.7 9.8 89 10.4 9.0 116 GUNSIGHT PASS 9820 9.9 -M * 10.9 -M * LEWIS LAKE DIVIDE 7850 17.5 24.3 72 21.7 26.0 83 PHILLIPS BENCH 8200 17.9 19.5 92 20.2 20.4 99 SALT RIVER SUMMIT 7760 8.9 9.8 91 10.4 13.1 79 SNAKE RIVER STATION 6920 11.1 13.3 83 15.1 16.3 93 SPRING CREEK DIVIDE 9000 17.7 18.2 97 18.4 19.0 97 THUMB DIVIDE 7980 11.1 12.4 90 13.0 13.3 98 TOGWOTEE PASS 9580 19.5 17.6 111 21.4 17.5 122 TWO OCEAN PLATEAU 9240 24.6 19.8 124 18.8 19.3 97 WILLOW CREEK 8380 22.0 21.1 104 26.5 22.6 117 ----- ----- Basin wide percent of average 95 100 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.7 16.6 95 14.4 14.5 99 BLACK BEAR 8170 21.4 26.4 81 22.8 27.3 84 CANYON 7870 8.6 9.2 93 9.5 11.2 85 FISHER CREEK 9100 24.7 24.4 101 23.5 25.6 92 MADISON PLATEAU 7750 12.5 16.6 75 14.4 18.3 79 NORTHEAST ENTRANCE 7350 7.4 8.0 92 9.7 9.2 105 PARKER PEAK 9400 17.5 15.2 115 12.6 11.5 110 SYLVAN LAKE 8420 13.0 15.5 84 15.2 15.3 99 THUMB DIVIDE 7980 11.1 12.4 90 13.0 13.3 98 TWO OCEAN PLATEAU 9240 24.6 19.8 124 18.8 19.3 97 WHISKEY CREEK 6800 9.0 11.5 78 12.1 14.4 84 WHITE MILL 8700 16.2 16.5 98 16.2 19.0 85 WOLVERINE 7650 8.7 8.9 98 8.6 9.5 91 ----- ----- Basin wide percent of average 95 92 WIND RIVER BURROUGHS CREEK 8750 12.1 10.4 116 12.9 11.7 110 COLD SPRINGS 9630 5.0 6.1 82 6.7 7.3 92 DEER PARK 9700 6.3 11.7 54 10.2 15.2 67 HOBBS PARK 10100 6.9 10.0 69 7.3 8.5 86 LITTLE WARM 9370 7.6 7.9 96 9.6 9.4 102 SOUTH PASS 9040 7.1 11.6 61 9.0 12.8 70 ST. LAWRENCE ALT 8620 2.1 4.9 43 4.9 5.9 83 TOGWOTEE PASS 9580 19.5 17.6 111 21.4 17.5 122 TOWNSEND CREEK 8700 4.5 5.7 79 6.6 7.6 87 ----- ----- Basin wide percent of average 83 92 BIGHORN BASIN BALD MTN. 9380 14.1 13.8 102 11.7 12.2 96 BEAR TRAP MEADOW 8200 6.1 3.7 165 6.7 5.7 118 BLACKWATER 9780 16.2 16.9 96 15.0 14.7 102 BONE SPRINGS DIV 9350 14.4 10.9 132 11.3 9.9 114 EVENING STAR 9200 20.5 20.3 101 21.5 18.3 117 GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.6 100 KIRWIN 9550 8.8 7.8 113 10.0 7.8 128 MARQUETTE 8760 2.9 6.0 48 5.9 6.4 92 MIDDLE POWDER 7760 6.7 7.6 88 6.5 8.5 76 OWL CREEK 8975 3.8 3.5 109 3.7 3.8 97 POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.6 124 SHELL CREEK 9580 12.8 10.2 125 12.3 9.6 128 SYLVAN LAKE 8420 13.0 15.5 84 15.2 15.3 99 SYLVAN ROAD 7120 10.2 9.1 112 13.4 13.7 98 TIMBER CREEK 7950 2.9 3.7 78 5.8 4.6 126 YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.8 107 ----- ----- Basin wide percent of average 104 107 SHOSHONE RIVER BLACKWATER 9780 16.2 16.9 96 15.0 14.7 102 EVENING STAR 9200 20.5 20.3 101 21.5 18.3 117 KIRWIN 9550 8.8 7.8 113 10.0 7.8 128 MARQUETTE 8760 2.9 6.0 48 5.9 6.4 92 SYLVAN LAKE 8420 13.0 15.5 84 15.2 15.3 99 SYLVAN ROAD 7120 10.2 9.1 112 13.4 13.7 98 YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.8 107 ----- ----- Basin wide percent of average 97 106 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 3.7 165 6.7 5.7 118 BIG GOOSE 7990 6.1 6.3 97 8.2 5.9 139 BONE SPRINGS DIV 9350 14.4 10.9 132 11.3 9.9 114 BURGESS JUNCTION 7880 8.8 7.6 116 9.5 8.2 116 CLOUD PEAK RESERVOIR 9860 12.3 8.3 148 12.0 8.4 143 DOME LAKE 8880 8.9 8.2 109 10.8 9.0 120 GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.6 100 HANSEN SAWMILL 8360 4.4 4.3 102 7.2 5.4 133 MIDDLE POWDER 7760 6.7 7.6 88 6.5 8.5 76 POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.6 124 SUCKER CREEK 8880 10.5 7.5 140 12.4 9.1 136 TIE CREEK 6870 3.7 4.2 88 10.2 7.0 146 ----- ----- Basin wide percent of average 118 121 BELLE FOURCHE BLIND PARK 6890 7.5 5.6 134 11.9 8.0 149 COLE CANYON 5910 4.6 4.7 98 9.2 4.8 192 NORTH RAPID CREEK 6130 7.2 5.3 136 10.2 6.5 157 ----- ----- Basin wide percent of average 124 162 UPPER N. PLATTE RIVER COLUMBINE 9160 18.5 17.5 106 17.6 17.3 102 DIVIDE PEAK 8880 14.3 13.4 107 16.3 14.2 115 ELK RIVER 8700 16.3 12.9 126 15.7 13.3 118 JOE WRIGHT 10120 -M 14.5 * -M 16.8 * NORTH FRENCH CREEK 10130 21.8 19.1 114 20.9 17.0 123 OLD BATTLE 10000 21.3 21.1 101 25.5 23.4 109 SAGE CREEK BASIN 7850 7.5 7.8 96 8.8 8.3 106 SOUTH BRUSH CREEK 8440 9.5 7.8 122 11.3 11.3 100 TOWER 10500 28.6 31.5 91 28.8 26.5 109 WEBBER SPRINGS 9250 16.0 16.9 95 19.0 18.7 102 WILLOW CREEK PASS 9540 8.6 7.9 109 8.2 8.6 95 ----- ----- Basin wide percent of average 104 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.5 16.0 91 13.8 14.8 93 CASPER MTN. 7900 6.0 9.4 64 8.5 9.3 91 DEADMAN HILL 10220 11.2 11.0 102 11.7 11.0 106 DEER PARK 9700 6.3 11.7 54 10.2 15.2 67 LAPRELE CREEK 8375 5.4 7.5 72 6.3 8.4 75 RENO HILL 8400 7.2 8.7 83 8.4 9.7 87 ROACH 9700 11.3 11.5 98 12.9 12.1 107 SAND LAKE 10050 18.3 20.7 88 16.9 16.4 103 SOUTH PASS 9040 7.1 11.6 61 9.0 12.8 70 WINDY PEAK 7900 5.2 4.8 108 5.9 7.2 82 ----- ----- Basin wide percent of average 82 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.7 8.2 118 11.9 10.3 116 DIVIDE PEAK 8880 14.3 13.4 107 16.3 14.2 115 OLD BATTLE 10000 21.3 21.1 101 25.5 23.4 109 SANDSTONE RS 8150 10.3 10.2 101 13.3 13.1 102 WHISKEY PARK 8950 21.1 19.5 108 22.5 20.1 112 ----- ----- Basin wide percent of average 106 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.1 10.0 81 8.2 9.4 87 BLIND BULL SUM 8650 17.2 19.2 90 14.3 16.0 89 EAST RIM DIVIDE 7930 6.7 8.9 75 9.3 8.4 111 ELKHART PARK G.S. 9400 9.4 9.2 102 10.4 9.2 113 GROS VENTRE SUMMIT 8750 8.7 9.8 89 10.4 9.0 116 GUNSIGHT PASS 9820 9.9 -M * 10.9 -M * KENDALL R.S. 7740 8.1 10.3 79 10.3 10.2 101 LOOMIS PARK 8240 11.8 11.8 100 14.2 12.3 115 NEW FORK LAKE 8340 8.8 8.0 110 8.5 8.1 105 SNIDER BASIN 8060 9.7 10.2 95 10.3 11.5 90 SPRING CREEK DIVIDE 9000 17.7 18.2 97 18.4 19.0 97 TRIPLE PEAK 8500 16.9 17.4 97 18.7 16.9 111 ----- ----- Basin wide percent of average 93 102 LOWER GREEN RIVER HAMS FORK 7840 6.7 8.8 76 7.5 8.7 86 HEWINTA 9519 5.3 7.1 75 8.0 9.7 82 HICKERSON PARK 9145 2.0 4.7 43 4.6 5.4 85 HOLE-IN-ROCK 9150 2.4 4.4 55 4.5 4.9 92 INDIAN CREEK 9425 14.6 18.4 79 14.0 17.5 80 KELLEY R.S. 8180 9.5 11.2 85 11.3 14.4 78 STEEL CREEK PARK 10200 6.8 9.9 69 9.8 10.6 92 ----- ----- Basin wide percent of average 73 84 UPPER BEAR RIVER BUG LAKE 7950 10.3 13.9 74 11.2 13.5 83 HAYDEN FORK 9212 10.7 10.4 103 13.4 14.2 94 KELLEY R.S. 8180 9.5 11.2 85 11.3 14.4 78 LILY LAKE 9156 8.7 8.6 101 10.4 11.9 87 MONTE CRISTO 8960 16.1 19.3 83 16.8 17.4 97 SALT RIVER SUMMIT 7760 8.9 9.8 91 10.4 13.1 79 TRIAL LAKE 9992 14.4 16.5 87 14.2 16.6 86 ----- ----- 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.