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 TUESDAY: FEBRUARY 10 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.2 13.8 81 13.9 16.0 87 COTTONWOOD CREEK 7670 18.1 15.4 118 21.7 19.9 109 GRAND TARGHEE 9260 27.6 -M * 24.1 -M * GRANITE CREEK 6770 11.7 13.6 86 16.2 14.9 109 GRASSY LAKE 7265 21.6 25.1 86 24.9 26.9 93 GROS VENTRE SUMMIT 8750 8.8 10.0 88 10.5 9.2 114 GUNSIGHT PASS 9820 10.3 -M * 11.2 -M * LEWIS LAKE DIVIDE 7850 18.0 25.2 71 22.1 26.9 82 PHILLIPS BENCH 8200 18.1 20.2 90 20.3 21.1 96 SALT RIVER SUMMIT 7760 9.2 10.3 89 10.8 13.6 79 SNAKE RIVER STATION 6920 11.6 13.9 83 15.6 16.8 93 SPRING CREEK DIVIDE 9000 18.1 18.8 96 18.6 19.6 95 THUMB DIVIDE 7980 11.2 12.9 87 13.0 13.7 95 TOGWOTEE PASS 9580 19.7 18.2 108 21.7 18.0 121 TWO OCEAN PLATEAU 9240 24.8 20.4 122 19.2 19.9 96 WILLOW CREEK 8380 22.9 21.8 105 27.4 23.3 118 ----- ----- Basin wide percent of average 94 98 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.8 17.3 91 14.5 14.9 97 BLACK BEAR 8170 22.3 27.5 81 23.5 28.3 83 CANYON 7870 8.8 9.6 92 9.6 11.5 83 FISHER CREEK 9100 25.3 25.4 100 23.9 26.4 91 MADISON PLATEAU 7750 12.8 17.5 73 14.8 18.9 78 NORTHEAST ENTRANCE 7350 7.5 8.4 89 9.8 9.5 103 PARKER PEAK 9400 17.7 15.7 113 12.7 11.9 107 SYLVAN LAKE 8420 13.3 16.0 83 15.6 15.8 99 THUMB DIVIDE 7980 11.2 12.9 87 13.0 13.7 95 TWO OCEAN PLATEAU 9240 24.8 20.4 122 19.2 19.9 96 WHISKEY CREEK 6800 9.3 12.0 78 12.4 14.8 84 WHITE MILL 8700 16.7 17.2 97 16.7 19.6 85 WOLVERINE 7650 8.8 9.2 96 8.7 9.8 89 ----- ----- Basin wide percent of average 93 90 WIND RIVER BURROUGHS CREEK 8750 12.2 10.8 113 12.9 12.0 108 COLD SPRINGS 9630 5.0 6.2 81 6.7 7.5 89 DEER PARK 9700 6.5 12.8 51 10.3 15.7 66 HOBBS PARK 10100 7.1 10.3 69 7.5 8.7 86 LITTLE WARM 9370 7.7 8.2 94 9.8 9.6 102 SOUTH PASS 9040 7.3 12.0 61 9.3 13.2 70 ST. LAWRENCE ALT 8620 2.0 5.0 40 5.0 6.1 82 TOGWOTEE PASS 9580 19.7 18.2 108 21.7 18.0 121 TOWNSEND CREEK 8700 4.5 6.0 75 6.6 7.8 85 ----- ----- Basin wide percent of average 80 91 BIGHORN BASIN BALD MTN. 9380 14.4 14.1 102 11.8 12.5 94 BEAR TRAP MEADOW 8200 -M 3.7 * -M 5.8 * BLACKWATER 9780 16.4 17.5 94 15.1 15.1 100 BONE SPRINGS DIV 9350 14.6 11.2 130 11.4 10.2 112 EVENING STAR 9200 21.0 21.3 99 22.2 18.9 117 GRAVE SPRINGS 8550 5.7 6.1 93 6.8 6.7 101 KIRWIN 9550 8.9 8.0 111 10.1 8.1 125 MARQUETTE 8760 3.1 6.1 51 6.0 6.6 91 MIDDLE POWDER 7760 7.1 7.7 92 7.6 8.6 88 OWL CREEK 8975 3.8 3.6 106 3.8 3.9 97 POWDER RIVER PASS 9480 9.8 7.6 129 11.1 8.8 126 SHELL CREEK 9580 13.2 10.4 127 12.7 9.8 130 SYLVAN LAKE 8420 13.3 16.0 83 15.6 15.8 99 SYLVAN ROAD 7120 10.4 9.6 108 13.5 14.1 96 TIMBER CREEK 7950 2.9 3.8 76 6.3 4.8 131 YOUNTS PEAK 8350 14.1 12.7 111 12.9 12.1 107 ----- ----- Basin wide percent of average 102 107 SHOSHONE RIVER BLACKWATER 9780 16.4 17.5 94 15.1 15.1 100 EVENING STAR 9200 21.0 21.3 99 22.2 18.9 117 KIRWIN 9550 8.9 8.0 111 10.1 8.1 125 MARQUETTE 8760 3.1 6.1 51 6.0 6.6 91 SYLVAN LAKE 8420 13.3 16.0 83 15.6 15.8 99 SYLVAN ROAD 7120 10.4 9.6 108 13.5 14.1 96 YOUNTS PEAK 8350 14.1 12.7 111 12.9 12.1 107 ----- ----- Basin wide percent of average 96 105 POWDER-TONGUE BEAR TRAP MEADOW 8200 -M 3.7 * -M 5.8 * BIG GOOSE 7990 6.3 6.5 97 8.4 6.1 138 BONE SPRINGS DIV 9350 14.6 11.2 130 11.4 10.2 112 BURGESS JUNCTION 7880 8.9 7.8 114 9.6 8.4 114 CLOUD PEAK RESERVOIR 9860 12.8 8.6 149 12.4 8.7 143 DOME LAKE 8880 9.1 8.5 107 11.1 9.2 121 GRAVE SPRINGS 8550 5.7 6.1 93 6.8 6.7 101 HANSEN SAWMILL 8360 4.7 4.4 107 7.5 5.6 134 MIDDLE POWDER 7760 7.1 7.7 92 7.6 8.6 88 POWDER RIVER PASS 9480 9.8 7.6 129 11.1 8.8 126 SUCKER CREEK 8880 10.6 7.8 136 12.5 9.3 134 TIE CREEK 6870 3.6 4.3 84 10.2 7.1 144 ----- ----- Basin wide percent of average 116 122 BELLE FOURCHE BLIND PARK 6890 7.8 5.7 137 12.2 8.2 149 COLE CANYON 5910 4.8 4.9 98 9.3 4.9 190 NORTH RAPID CREEK 6130 7.7 5.6 138 10.4 6.7 155 ----- ----- Basin wide percent of average 125 161 UPPER N. PLATTE RIVER COLUMBINE 9160 19.1 18.3 104 18.1 17.9 101 DIVIDE PEAK 8880 15.3 13.7 112 17.2 14.7 117 ELK RIVER 8700 17.2 13.5 127 16.2 13.7 118 JOE WRIGHT 10120 16.5 15.0 110 20.1 17.4 116 NORTH FRENCH CREEK 10130 22.6 19.6 115 21.7 17.5 124 OLD BATTLE 10000 22.5 21.9 103 27.3 24.2 113 SAGE CREEK BASIN 7850 8.3 7.9 105 9.7 8.5 114 SOUTH BRUSH CREEK 8440 9.7 8.1 120 11.4 11.7 97 TOWER 10500 30.2 32.5 93 29.7 27.4 108 WEBBER SPRINGS 9250 16.9 17.6 96 20.0 19.2 104 WILLOW CREEK PASS 9540 8.9 8.2 109 8.4 8.9 94 ----- ----- Basin wide percent of average 106 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.9 16.5 90 14.0 15.2 92 CASPER MTN. 7900 7.5 9.7 77 9.8 9.5 103 DEADMAN HILL 10220 11.4 11.3 101 11.8 11.4 104 DEER PARK 9700 6.5 12.8 51 10.3 15.7 66 LAPRELE CREEK 8375 6.2 7.7 81 6.9 8.7 79 RENO HILL 8400 8.0 8.9 90 9.1 10.0 91 ROACH 9700 11.6 12.0 97 13.3 12.5 106 SAND LAKE 10050 19.1 21.4 89 17.5 16.9 104 SOUTH PASS 9040 7.3 12.0 61 9.3 13.2 70 WINDY PEAK 7900 5.4 5.0 108 6.0 7.4 81 ----- ----- Basin wide percent of average 83 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.2 8.4 133 12.7 10.6 120 DIVIDE PEAK 8880 15.3 13.7 112 17.2 14.7 117 OLD BATTLE 10000 22.5 21.9 103 27.3 24.2 113 SANDSTONE RS 8150 11.6 10.6 109 14.4 13.5 107 WHISKEY PARK 8950 22.8 20.2 113 24.1 20.6 117 ----- ----- Basin wide percent of average 111 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.1 10.3 79 8.1 9.7 84 BLIND BULL SUM 8650 17.5 19.8 88 14.7 16.5 89 EAST RIM DIVIDE 7930 6.7 9.3 72 9.4 8.7 108 ELKHART PARK G.S. 9400 9.5 9.5 100 10.6 9.5 112 GROS VENTRE SUMMIT 8750 8.8 10.0 88 10.5 9.2 114 GUNSIGHT PASS 9820 10.3 -M * 11.2 -M * KENDALL R.S. 7740 8.3 10.6 78 10.5 10.6 99 LOOMIS PARK 8240 12.0 12.2 98 14.4 12.7 113 NEW FORK LAKE 8340 8.9 8.3 107 8.4 8.4 100 SNIDER BASIN 8060 9.6 10.6 91 10.3 11.9 87 SPRING CREEK DIVIDE 9000 18.1 18.8 96 18.6 19.6 95 TRIPLE PEAK 8500 17.1 17.9 96 18.9 17.5 108 ----- ----- Basin wide percent of average 91 100 LOWER GREEN RIVER HAMS FORK 7840 6.9 9.2 75 7.5 9.0 83 HEWINTA 9519 5.4 7.4 73 8.1 10.0 81 HICKERSON PARK 9145 2.1 4.9 43 4.7 5.5 85 HOLE-IN-ROCK 9150 2.5 4.6 54 4.7 5.1 92 INDIAN CREEK 9425 15.0 19.0 79 14.2 18.1 78 KELLEY R.S. 8180 9.7 11.6 84 11.3 14.9 76 STEEL CREEK PARK 10200 6.9 10.4 66 10.1 11.0 92 ----- ----- Basin wide percent of average 72 82 UPPER BEAR RIVER BUG LAKE 7950 11.1 14.4 77 11.9 13.9 86 HAYDEN FORK 9212 11.6 10.8 107 14.3 14.6 98 KELLEY R.S. 8180 9.7 11.6 84 11.3 14.9 76 LILY LAKE 9156 9.2 9.0 102 10.9 12.3 89 MONTE CRISTO 8960 17.1 20.3 84 17.6 18.0 98 SALT RIVER SUMMIT 7760 9.2 10.3 89 10.8 13.6 79 TRIAL LAKE 9992 16.2 17.2 94 15.9 17.2 92 ----- ----- Basin wide percent of average 90 89 ----------------------------------------------------------------------------- -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.