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 WEDNESDAY: FEBRUARY 11 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.1 13.9 80 13.9 16.1 86 COTTONWOOD CREEK 7670 18.1 15.5 117 21.6 20.1 107 GRAND TARGHEE 9260 27.7 -M * 24.1 -M * GRANITE CREEK 6770 11.7 13.7 85 16.2 15.0 108 GRASSY LAKE 7265 21.7 25.3 86 24.9 27.1 92 GROS VENTRE SUMMIT 8750 8.6 10.1 85 10.3 9.3 111 GUNSIGHT PASS 9820 10.2 -M * 11.1 -M * LEWIS LAKE DIVIDE 7850 18.1 25.5 71 22.1 27.1 82 PHILLIPS BENCH 8200 18.1 20.4 89 20.3 21.3 95 SALT RIVER SUMMIT 7760 9.1 10.4 87 10.6 13.7 77 SNAKE RIVER STATION 6920 11.5 14.0 82 15.6 16.9 92 SPRING CREEK DIVIDE 9000 18.0 19.0 95 18.5 19.7 94 THUMB DIVIDE 7980 11.2 13.0 86 12.9 13.8 93 TOGWOTEE PASS 9580 19.7 18.3 108 21.7 18.1 120 TWO OCEAN PLATEAU 9240 24.8 20.5 121 19.1 20.1 95 WILLOW CREEK 8380 23.1 22.0 105 27.4 23.5 117 ----- ----- Basin wide percent of average 93 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.8 17.5 90 14.5 15.0 97 BLACK BEAR 8170 23.4 27.8 84 23.5 28.5 82 CANYON 7870 8.8 9.7 91 9.6 11.5 83 FISHER CREEK 9100 25.4 25.6 99 24.0 26.6 90 MADISON PLATEAU 7750 12.8 17.6 73 14.8 19.1 77 NORTHEAST ENTRANCE 7350 7.6 8.4 90 9.9 9.6 103 PARKER PEAK 9400 17.7 15.8 112 12.9 12.0 108 SYLVAN LAKE 8420 13.2 16.1 82 15.5 15.9 97 THUMB DIVIDE 7980 11.2 13.0 86 12.9 13.8 93 TWO OCEAN PLATEAU 9240 24.8 20.5 121 19.1 20.1 95 WHISKEY CREEK 6800 9.4 12.1 78 12.4 14.9 83 WHITE MILL 8700 16.7 17.3 97 16.5 19.8 83 WOLVERINE 7650 8.8 9.3 95 8.4 9.9 85 ----- ----- Basin wide percent of average 93 90 WIND RIVER BURROUGHS CREEK 8750 12.2 10.8 113 12.9 12.1 107 COLD SPRINGS 9630 5.0 6.3 79 6.7 7.5 89 DEER PARK 9700 6.6 13.1 50 10.4 15.8 66 HOBBS PARK 10100 7.1 10.3 69 7.5 8.8 85 LITTLE WARM 9370 7.7 8.3 93 9.8 9.7 101 SOUTH PASS 9040 7.1 12.0 59 9.3 13.3 70 ST. LAWRENCE ALT 8620 1.8 5.1 35 4.9 6.2 79 TOGWOTEE PASS 9580 19.7 18.3 108 21.7 18.1 120 TOWNSEND CREEK 8700 4.0 6.0 67 6.4 7.8 82 ----- ----- Basin wide percent of average 79 90 BIGHORN BASIN BALD MTN. 9380 14.5 14.2 102 11.9 12.6 94 BEAR TRAP MEADOW 8200 6.4 3.8 168 6.8 5.8 117 BLACKWATER 9780 16.4 17.6 93 15.1 15.2 99 BONE SPRINGS DIV 9350 14.7 11.3 130 11.4 10.3 111 EVENING STAR 9200 21.0 21.5 98 22.2 19.0 117 GRAVE SPRINGS 8550 5.7 6.3 90 6.8 6.8 100 KIRWIN 9550 8.9 8.1 110 10.1 8.1 125 MARQUETTE 8760 3.1 6.2 50 6.0 6.6 91 MIDDLE POWDER 7760 7.1 7.9 90 7.6 8.7 87 OWL CREEK 8975 3.9 3.6 108 3.8 3.9 97 POWDER RIVER PASS 9480 9.8 7.7 127 11.1 8.9 125 SHELL CREEK 9580 13.2 10.5 126 12.7 9.9 128 SYLVAN LAKE 8420 13.2 16.1 82 15.5 15.9 97 SYLVAN ROAD 7120 10.4 9.6 108 13.5 14.2 95 TIMBER CREEK 7950 2.7 3.9 69 6.0 4.8 125 YOUNTS PEAK 8350 14.1 12.8 110 12.9 12.1 107 ----- ----- Basin wide percent of average 102 107 SHOSHONE RIVER BLACKWATER 9780 16.4 17.6 93 15.1 15.2 99 EVENING STAR 9200 21.0 21.5 98 22.2 19.0 117 KIRWIN 9550 8.9 8.1 110 10.1 8.1 125 MARQUETTE 8760 3.1 6.2 50 6.0 6.6 91 SYLVAN LAKE 8420 13.2 16.1 82 15.5 15.9 97 SYLVAN ROAD 7120 10.4 9.6 108 13.5 14.2 95 YOUNTS PEAK 8350 14.1 12.8 110 12.9 12.1 107 ----- ----- Basin wide percent of average 95 105 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.4 3.8 168 6.8 5.8 117 BIG GOOSE 7990 6.3 6.5 97 8.4 6.1 138 BONE SPRINGS DIV 9350 14.7 11.3 130 11.4 10.3 111 BURGESS JUNCTION 7880 8.9 7.9 113 9.6 8.4 114 CLOUD PEAK RESERVOIR 9860 12.8 8.6 149 12.4 8.7 143 DOME LAKE 8880 9.1 8.6 106 11.1 9.2 121 GRAVE SPRINGS 8550 5.7 6.3 90 6.8 6.8 100 HANSEN SAWMILL 8360 4.7 4.5 104 7.5 5.6 134 MIDDLE POWDER 7760 7.1 7.9 90 7.6 8.7 87 POWDER RIVER PASS 9480 9.8 7.7 127 11.1 8.9 125 SUCKER CREEK 8880 10.6 7.8 136 12.4 9.4 132 TIE CREEK 6870 3.5 4.3 81 10.0 7.1 141 ----- ----- Basin wide percent of average 117 121 BELLE FOURCHE BLIND PARK 6890 7.8 5.7 137 12.2 8.3 147 COLE CANYON 5910 4.7 4.9 96 9.3 5.0 186 NORTH RAPID CREEK 6130 7.6 5.6 136 10.6 6.7 158 ----- ----- Basin wide percent of average 124 160 UPPER N. PLATTE RIVER COLUMBINE 9160 19.2 18.5 104 18.3 18.0 102 DIVIDE PEAK 8880 15.3 13.8 111 17.2 14.8 116 ELK RIVER 8700 17.4 13.7 127 16.2 13.8 117 JOE WRIGHT 10120 16.5 15.1 109 20.2 17.5 115 NORTH FRENCH CREEK 10130 22.8 19.8 115 21.7 17.6 123 OLD BATTLE 10000 22.5 22.1 102 27.4 24.4 112 SAGE CREEK BASIN 7850 8.3 8.0 104 9.7 8.6 113 SOUTH BRUSH CREEK 8440 9.8 8.2 120 11.4 11.7 97 TOWER 10500 30.3 32.8 92 29.7 27.6 108 WEBBER SPRINGS 9250 16.9 17.7 95 20.0 19.4 103 WILLOW CREEK PASS 9540 8.8 8.2 107 8.5 9.0 94 ----- ----- Basin wide percent of average 106 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.9 16.6 90 14.1 15.3 92 CASPER MTN. 7900 7.5 9.8 77 10.0 9.6 104 DEADMAN HILL 10220 11.5 11.4 101 12.0 11.5 104 DEER PARK 9700 6.6 13.1 50 10.4 15.8 66 LAPRELE CREEK 8375 6.2 7.8 79 6.9 8.7 79 RENO HILL 8400 8.0 9.0 89 9.1 10.0 91 ROACH 9700 11.7 12.1 97 13.4 12.6 106 SAND LAKE 10050 19.1 21.6 88 17.5 17.0 103 SOUTH PASS 9040 7.1 12.0 59 9.3 13.3 70 WINDY PEAK 7900 5.5 5.1 108 6.0 7.4 81 ----- ----- Basin wide percent of average 83 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.4 8.5 134 12.7 10.7 119 DIVIDE PEAK 8880 15.3 13.8 111 17.2 14.8 116 OLD BATTLE 10000 22.5 22.1 102 27.4 24.4 112 SANDSTONE RS 8150 11.7 10.7 109 14.4 13.6 106 WHISKEY PARK 8950 22.9 20.4 112 24.1 20.8 116 ----- ----- Basin wide percent of average 111 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.9 10.4 76 7.9 9.8 81 BLIND BULL SUM 8650 17.5 20.0 88 14.6 16.6 88 EAST RIM DIVIDE 7930 6.7 9.4 71 9.3 8.8 106 ELKHART PARK G.S. 9400 9.4 9.6 98 10.5 9.5 111 GROS VENTRE SUMMIT 8750 8.6 10.1 85 10.3 9.3 111 GUNSIGHT PASS 9820 10.2 -M * 11.1 -M * KENDALL R.S. 7740 8.2 10.7 77 10.5 10.7 98 LOOMIS PARK 8240 12.0 12.3 98 14.4 12.8 112 NEW FORK LAKE 8340 8.9 8.3 107 8.2 8.4 98 SNIDER BASIN 8060 9.6 10.7 90 10.3 12.0 86 SPRING CREEK DIVIDE 9000 18.0 19.0 95 18.5 19.7 94 TRIPLE PEAK 8500 17.0 18.1 94 18.8 17.6 107 ----- ----- Basin wide percent of average 89 99 LOWER GREEN RIVER HAMS FORK 7840 6.8 9.2 74 7.6 9.1 84 HEWINTA 9519 5.9 7.5 79 8.6 10.0 86 HICKERSON PARK 9145 1.9 4.9 39 4.5 5.5 82 HOLE-IN-ROCK 9150 2.6 4.7 55 4.8 5.1 94 INDIAN CREEK 9425 14.9 19.1 78 14.2 18.2 78 KELLEY R.S. 8180 9.7 11.8 82 11.2 15.0 75 STEEL CREEK PARK 10200 7.3 10.5 70 10.7 11.1 96 ----- ----- Basin wide percent of average 73 83 UPPER BEAR RIVER BUG LAKE 7950 11.1 14.6 76 11.8 14.0 84 HAYDEN FORK 9212 11.8 10.9 108 14.4 14.7 98 KELLEY R.S. 8180 9.7 11.8 82 11.2 15.0 75 LILY LAKE 9156 9.5 9.1 104 11.3 12.4 91 MONTE CRISTO 8960 17.4 20.5 85 17.8 18.2 98 SALT RIVER SUMMIT 7760 9.1 10.4 87 10.6 13.7 77 TRIAL LAKE 9992 16.2 17.4 93 16.0 17.3 92 ----- ----- Basin wide percent of average 90 88 ----------------------------------------------------------------------------- -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.