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: JANUARY 21 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 9.8 11.2 88 12.7 13.4 95 COTTONWOOD CREEK 7670 15.5 12.7 122 19.0 17.1 111 GRAND TARGHEE 9260 22.6 -M * 20.2 -M * GRANITE CREEK 6770 9.5 10.7 89 14.1 12.4 114 GRASSY LAKE 7265 17.9 20.1 89 21.1 22.6 93 GROS VENTRE SUMMIT 8750 8.2 8.7 94 9.4 7.9 119 GUNSIGHT PASS 9820 8.5 -M * 9.5 -M * LEWIS LAKE DIVIDE 7850 15.9 20.2 79 20.0 22.5 89 PHILLIPS BENCH 8200 16.0 16.5 97 18.3 17.6 104 SALT RIVER SUMMIT 7760 7.3 7.9 92 9.0 11.5 78 SNAKE RIVER STATION 6920 9.5 10.9 87 13.7 14.1 97 SPRING CREEK DIVIDE 9000 15.7 15.7 100 16.6 16.7 99 THUMB DIVIDE 7980 10.2 10.3 99 12.0 11.6 103 TOGWOTEE PASS 9580 18.0 15.1 119 19.7 15.3 129 TWO OCEAN PLATEAU 9240 22.9 17.1 134 17.7 16.8 105 WILLOW CREEK 8380 18.6 18.2 102 23.1 19.8 117 ----- ----- Basin wide percent of average 100 103 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 14.6 14.8 99 13.4 12.6 106 BLACK BEAR 8170 19.0 23.1 82 20.9 23.3 90 CANYON 7870 7.7 8.0 96 8.6 9.8 88 FISHER CREEK 9100 22.7 21.5 106 21.7 22.2 98 MADISON PLATEAU 7750 11.1 14.7 76 13.1 15.7 83 NORTHEAST ENTRANCE 7350 6.2 6.9 90 8.7 8.1 107 PARKER PEAK 9400 15.9 13.5 118 12.6 10.1 125 SYLVAN LAKE 8420 11.3 13.6 83 13.8 13.4 103 THUMB DIVIDE 7980 10.2 10.3 99 12.0 11.6 103 TWO OCEAN PLATEAU 9240 22.9 17.1 134 17.7 16.8 105 WHISKEY CREEK 6800 7.8 9.9 79 11.0 12.5 88 WHITE MILL 8700 14.8 14.6 101 14.9 16.4 91 WOLVERINE 7650 7.3 7.7 95 7.6 8.4 90 ----- ----- Basin wide percent of average 98 97 WIND RIVER BURROUGHS CREEK 8750 11.2 9.2 122 12.0 10.3 117 COLD SPRINGS 9630 4.6 5.6 82 6.3 6.7 94 DEER PARK 9700 5.9 10.9 54 9.6 13.3 72 HOBBS PARK 10100 6.9 9.2 75 7.2 7.6 95 LITTLE WARM 9370 6.7 7.1 94 8.6 8.4 102 SOUTH PASS 9040 6.6 10.3 64 8.7 11.1 78 ST. LAWRENCE ALT 8620 1.9 4.5 42 4.7 5.3 89 TOGWOTEE PASS 9580 18.0 15.1 119 19.7 15.3 129 TOWNSEND CREEK 8700 4.1 5.2 79 6.1 6.8 90 ----- ----- Basin wide percent of average 85 98 BIGHORN BASIN BALD MTN. 9380 13.3 12.3 108 11.2 10.8 104 BEAR TRAP MEADOW 8200 5.8 3.2 181 6.2 5.1 122 BLACKWATER 9780 15.6 14.9 105 14.2 13.0 109 BONE SPRINGS DIV 9350 13.2 9.8 135 10.5 8.8 119 EVENING STAR 9200 19.0 17.9 106 20.1 16.1 125 GRAVE SPRINGS 8550 4.7 5.3 89 5.8 6.0 97 KIRWIN 9550 8.4 7.2 117 9.5 7.1 134 MARQUETTE 8760 2.8 5.6 50 5.5 5.9 93 MIDDLE POWDER 7760 6.1 6.7 91 6.0 7.8 77 OWL CREEK 8975 3.7 3.2 116 3.6 3.4 106 POWDER RIVER PASS 9480 8.8 6.6 133 10.0 7.5 133 SHELL CREEK 9580 11.9 9.1 131 11.6 8.4 138 SYLVAN LAKE 8420 11.3 13.6 83 13.8 13.4 103 SYLVAN ROAD 7120 9.3 8.0 116 12.3 12.3 100 TIMBER CREEK 7950 2.8 3.4 82 5.8 4.2 138 YOUNTS PEAK 8350 12.8 10.7 120 11.6 10.4 112 ----- ----- Basin wide percent of average 109 112 SHOSHONE RIVER BLACKWATER 9780 15.6 14.9 105 14.2 13.0 109 EVENING STAR 9200 19.0 17.9 106 20.1 16.1 125 KIRWIN 9550 8.4 7.2 117 9.5 7.1 134 MARQUETTE 8760 2.8 5.6 50 5.5 5.9 93 SYLVAN LAKE 8420 11.3 13.6 83 13.8 13.4 103 SYLVAN ROAD 7120 9.3 8.0 116 12.3 12.3 100 YOUNTS PEAK 8350 12.8 10.7 120 11.6 10.4 112 ----- ----- Basin wide percent of average 102 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.8 3.2 181 6.2 5.1 122 BIG GOOSE 7990 5.6 5.5 102 7.7 5.0 154 BONE SPRINGS DIV 9350 13.2 9.8 135 10.5 8.8 119 BURGESS JUNCTION 7880 8.2 6.8 121 8.9 7.3 122 CLOUD PEAK RESERVOIR 9860 11.4 7.3 156 11.3 7.6 149 DOME LAKE 8880 8.2 7.4 111 10.1 8.1 125 GRAVE SPRINGS 8550 4.7 5.3 89 5.8 6.0 97 HANSEN SAWMILL 8360 4.1 3.9 105 6.8 4.9 139 MIDDLE POWDER 7760 6.1 6.7 91 6.0 7.8 77 POWDER RIVER PASS 9480 8.8 6.6 133 10.0 7.5 133 SUCKER CREEK 8880 9.8 6.6 148 11.7 8.1 144 TIE CREEK 6870 3.2 3.7 86 9.5 6.2 153 ----- ----- Basin wide percent of average 122 127 BELLE FOURCHE BLIND PARK 6890 6.4 4.8 133 10.9 7.3 149 COLE CANYON 5910 4.3 4.1 105 8.5 4.4 193 NORTH RAPID CREEK 6130 6.6 4.4 150 9.5 5.9 161 ----- ----- Basin wide percent of average 130 164 UPPER N. PLATTE RIVER COLUMBINE 9160 13.3 14.1 94 12.9 15.0 86 DIVIDE PEAK 8880 10.1 11.8 86 12.2 12.5 98 ELK RIVER 8700 12.3 10.5 117 12.4 11.5 108 JOE WRIGHT 10120 13.0 12.4 105 16.3 14.8 110 NORTH FRENCH CREEK 10130 16.0 16.7 96 15.6 14.9 105 OLD BATTLE 10000 15.8 18.0 88 19.7 20.3 97 SAGE CREEK BASIN 7850 5.0 6.8 74 6.8 7.3 93 SOUTH BRUSH CREEK 8440 7.1 6.6 108 8.9 9.8 91 TOWER 10500 21.0 26.7 79 22.7 22.9 99 WEBBER SPRINGS 9250 12.1 14.4 84 15.0 16.5 91 WILLOW CREEK PASS 9540 7.0 6.8 103 7.2 7.6 95 ----- ----- Basin wide percent of average 92 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 11.3 13.8 82 10.9 13.0 84 CASPER MTN. 7900 4.9 8.3 59 7.4 8.3 89 DEADMAN HILL 10220 8.7 9.6 91 9.4 9.7 97 DEER PARK 9700 5.9 10.9 54 9.6 13.3 72 LAPRELE CREEK 8375 3.6 6.6 55 4.6 7.5 61 RENO HILL 8400 5.7 7.8 73 7.0 8.7 80 ROACH 9700 9.0 9.7 93 10.5 10.6 99 SAND LAKE 10050 14.1 18.2 77 13.0 14.6 89 SOUTH PASS 9040 6.6 10.3 64 8.7 11.1 78 WINDY PEAK 7900 3.2 4.1 78 3.9 6.5 60 ----- ----- Basin wide percent of average 74 82 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.5 6.6 98 8.9 9.0 99 DIVIDE PEAK 8880 10.1 11.8 86 12.2 12.5 98 OLD BATTLE 10000 15.8 18.0 88 19.7 20.3 97 SANDSTONE RS 8150 7.4 8.2 90 10.0 11.4 88 WHISKEY PARK 8950 15.0 15.9 94 17.1 17.6 97 ----- ----- Basin wide percent of average 91 96 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.9 8.6 80 7.1 8.2 87 BLIND BULL SUM 8650 15.4 16.7 92 12.9 14.0 92 EAST RIM DIVIDE 7930 5.3 7.6 70 8.2 7.4 111 ELKHART PARK G.S. 9400 8.1 7.9 103 9.4 8.2 115 GROS VENTRE SUMMIT 8750 8.2 8.7 94 9.4 7.9 119 GUNSIGHT PASS 9820 8.5 -M * 9.5 -M * KENDALL R.S. 7740 6.8 8.8 77 9.2 8.8 105 LOOMIS PARK 8240 10.2 10.1 101 12.6 10.7 118 NEW FORK LAKE 8340 7.5 6.9 109 7.3 7.3 100 SNIDER BASIN 8060 8.7 8.8 99 9.5 10.1 94 SPRING CREEK DIVIDE 9000 15.7 15.7 100 16.6 16.7 99 TRIPLE PEAK 8500 15.4 15.0 103 17.1 14.6 117 ----- ----- Basin wide percent of average 94 105 LOWER GREEN RIVER HAMS FORK 7840 5.1 7.4 69 6.1 7.6 80 HEWINTA 9519 3.8 5.7 67 6.6 8.5 78 HICKERSON PARK 9145 1.5 3.9 38 4.0 4.8 83 HOLE-IN-ROCK 9150 2.0 3.6 56 4.1 4.4 93 INDIAN CREEK 9425 12.3 15.9 77 12.1 15.3 79 KELLEY R.S. 8180 7.3 9.5 77 9.0 12.7 71 STEEL CREEK PARK 10200 5.4 8.4 64 8.4 9.2 91 ----- ----- Basin wide percent of average 69 80 UPPER BEAR RIVER BUG LAKE 7950 6.2 11.5 54 9.2 11.7 79 HAYDEN FORK 9212 8.4 8.6 98 11.2 12.4 90 KELLEY R.S. 8180 7.3 9.5 77 9.0 12.7 71 LILY LAKE 9156 -M 7.2 * -M 10.5 * MONTE CRISTO 8960 12.4 15.6 79 13.7 15.2 90 SALT RIVER SUMMIT 7760 7.3 7.9 92 9.0 11.5 78 TRIAL LAKE 9992 -M 13.8 * -M 14.3 * ----- ----- Basin wide percent of average 78 82 ----------------------------------------------------------------------------- -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.