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: JANUARY 20 , 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 11.0 89 12.7 13.3 95 COTTONWOOD CREEK 7670 15.4 12.6 122 19.0 17.0 112 GRAND TARGHEE 9260 22.6 -M * 20.2 -M * GRANITE CREEK 6770 9.6 10.6 91 14.1 12.2 116 GRASSY LAKE 7265 18.0 19.8 91 21.3 22.4 95 GROS VENTRE SUMMIT 8750 8.2 8.6 95 9.4 7.8 121 GUNSIGHT PASS 9820 8.5 -M * 9.5 -M * LEWIS LAKE DIVIDE 7850 15.9 19.9 80 20.1 22.3 90 PHILLIPS BENCH 8200 16.0 16.3 98 18.3 17.4 105 SALT RIVER SUMMIT 7760 7.3 7.7 95 9.0 11.4 79 SNAKE RIVER STATION 6920 9.5 10.7 89 13.7 13.9 99 SPRING CREEK DIVIDE 9000 15.7 15.5 101 16.6 16.6 100 THUMB DIVIDE 7980 10.3 10.2 101 12.1 11.5 105 TOGWOTEE PASS 9580 18.0 14.9 121 19.7 15.1 130 TWO OCEAN PLATEAU 9240 22.8 16.9 135 17.7 16.7 106 WILLOW CREEK 8380 18.6 18.0 103 23.1 19.6 118 ----- ----- Basin wide percent of average 101 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 14.5 14.6 99 13.3 12.5 106 BLACK BEAR 8170 19.0 22.7 84 20.8 23.0 90 CANYON 7870 7.7 7.9 97 8.6 9.7 89 FISHER CREEK 9100 22.7 21.3 107 21.7 22.0 99 MADISON PLATEAU 7750 11.1 14.5 77 13.1 15.5 85 NORTHEAST ENTRANCE 7350 6.2 6.8 91 8.7 8.0 109 PARKER PEAK 9400 15.9 13.4 119 12.6 10.0 126 SYLVAN LAKE 8420 11.3 13.5 84 13.8 13.3 104 THUMB DIVIDE 7980 10.3 10.2 101 12.1 11.5 105 TWO OCEAN PLATEAU 9240 22.8 16.9 135 17.7 16.7 106 WHISKEY CREEK 6800 7.8 9.8 80 11.0 12.4 89 WHITE MILL 8700 14.8 14.5 102 14.9 16.2 92 WOLVERINE 7650 7.2 7.7 94 7.3 8.4 87 ----- ----- Basin wide percent of average 99 98 WIND RIVER BURROUGHS CREEK 8750 11.1 9.1 122 12.0 10.2 118 COLD SPRINGS 9630 4.5 5.6 80 6.2 6.6 94 DEER PARK 9700 5.9 10.7 55 9.6 13.1 73 HOBBS PARK 10100 6.8 9.1 75 7.1 7.5 95 LITTLE WARM 9370 6.5 7.0 93 8.5 8.3 102 SOUTH PASS 9040 6.6 10.2 65 8.7 11.0 79 ST. LAWRENCE ALT 8620 1.8 4.4 41 4.7 5.2 90 TOGWOTEE PASS 9580 18.0 14.9 121 19.7 15.1 130 TOWNSEND CREEK 8700 4.0 5.2 77 6.0 6.8 88 ----- ----- Basin wide percent of average 86 98 BIGHORN BASIN BALD MTN. 9380 13.3 12.2 109 11.2 10.6 106 BEAR TRAP MEADOW 8200 5.7 3.1 184 6.2 5.1 122 BLACKWATER 9780 15.5 14.9 104 14.1 12.9 109 BONE SPRINGS DIV 9350 13.2 9.7 136 10.5 8.7 121 EVENING STAR 9200 19.0 17.7 107 20.1 16.0 126 GRAVE SPRINGS 8550 4.7 5.2 90 5.8 6.0 97 KIRWIN 9550 8.4 7.1 118 9.5 7.0 136 MARQUETTE 8760 2.8 5.6 50 5.4 5.8 93 MIDDLE POWDER 7760 6.1 6.6 92 6.1 7.7 79 OWL CREEK 8975 3.7 3.2 116 3.6 3.4 106 POWDER RIVER PASS 9480 8.8 6.6 133 10.0 7.4 135 SHELL CREEK 9580 11.8 9.0 131 11.6 8.3 140 SYLVAN LAKE 8420 11.3 13.5 84 13.8 13.3 104 SYLVAN ROAD 7120 9.3 8.0 116 12.2 12.2 100 TIMBER CREEK 7950 2.7 3.4 79 5.8 4.2 138 YOUNTS PEAK 8350 12.8 10.6 121 11.6 10.3 113 ----- ----- Basin wide percent of average 109 113 SHOSHONE RIVER BLACKWATER 9780 15.5 14.9 104 14.1 12.9 109 EVENING STAR 9200 19.0 17.7 107 20.1 16.0 126 KIRWIN 9550 8.4 7.1 118 9.5 7.0 136 MARQUETTE 8760 2.8 5.6 50 5.4 5.8 93 SYLVAN LAKE 8420 11.3 13.5 84 13.8 13.3 104 SYLVAN ROAD 7120 9.3 8.0 116 12.2 12.2 100 YOUNTS PEAK 8350 12.8 10.6 121 11.6 10.3 113 ----- ----- Basin wide percent of average 102 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.7 3.1 184 6.2 5.1 122 BIG GOOSE 7990 5.5 5.4 102 7.7 5.0 154 BONE SPRINGS DIV 9350 13.2 9.7 136 10.5 8.7 121 BURGESS JUNCTION 7880 8.2 6.7 122 8.9 7.2 124 CLOUD PEAK RESERVOIR 9860 11.4 7.2 158 11.1 7.6 146 DOME LAKE 8880 8.1 7.3 111 10.1 8.0 126 GRAVE SPRINGS 8550 4.7 5.2 90 5.8 6.0 97 HANSEN SAWMILL 8360 4.1 3.8 108 6.7 4.9 137 MIDDLE POWDER 7760 6.1 6.6 92 6.1 7.7 79 POWDER RIVER PASS 9480 8.8 6.6 133 10.0 7.4 135 SUCKER CREEK 8880 9.8 6.5 151 11.6 8.0 145 TIE CREEK 6870 3.2 3.8 84 9.5 6.2 153 ----- ----- Basin wide percent of average 124 127 BELLE FOURCHE BLIND PARK 6890 6.5 4.7 138 10.9 7.2 151 COLE CANYON 5910 4.3 4.0 108 8.5 4.4 193 NORTH RAPID CREEK 6130 6.6 4.3 153 9.5 5.9 161 ----- ----- Basin wide percent of average 134 165 UPPER N. PLATTE RIVER COLUMBINE 9160 13.3 13.9 96 13.0 14.9 87 DIVIDE PEAK 8880 10.0 11.7 85 12.2 12.4 98 ELK RIVER 8700 12.2 10.3 118 12.3 11.3 109 JOE WRIGHT 10120 12.9 12.3 105 16.3 14.6 112 NORTH FRENCH CREEK 10130 16.1 16.6 97 15.6 14.8 105 OLD BATTLE 10000 15.7 17.8 88 19.7 20.1 98 SAGE CREEK BASIN 7850 4.9 6.8 72 6.8 7.2 94 SOUTH BRUSH CREEK 8440 7.1 6.5 109 8.9 9.7 92 TOWER 10500 21.0 26.4 80 22.7 22.7 100 WEBBER SPRINGS 9250 12.0 14.2 85 15.0 16.4 91 WILLOW CREEK PASS 9540 7.0 6.7 104 7.2 7.6 95 ----- ----- Basin wide percent of average 92 99 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 11.3 13.7 82 10.9 12.9 84 CASPER MTN. 7900 4.8 8.2 59 7.4 8.2 90 DEADMAN HILL 10220 8.8 9.5 93 9.4 9.6 98 DEER PARK 9700 5.9 10.7 55 9.6 13.1 73 LAPRELE CREEK 8375 3.7 6.6 56 4.7 7.5 63 RENO HILL 8400 5.7 7.7 74 7.0 8.6 81 ROACH 9700 9.0 9.6 94 10.5 10.5 100 SAND LAKE 10050 14.2 18.0 79 13.0 14.5 90 SOUTH PASS 9040 6.6 10.2 65 8.7 11.0 79 WINDY PEAK 7900 3.2 4.0 80 3.9 6.5 60 ----- ----- Basin wide percent of average 75 83 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.5 6.5 100 8.9 8.9 100 DIVIDE PEAK 8880 10.0 11.7 85 12.2 12.4 98 OLD BATTLE 10000 15.7 17.8 88 19.7 20.1 98 SANDSTONE RS 8150 7.4 8.0 92 10.1 11.3 89 WHISKEY PARK 8950 15.0 15.7 96 17.1 17.4 98 ----- ----- Basin wide percent of average 91 97 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.9 8.5 81 7.1 8.1 88 BLIND BULL SUM 8650 15.4 16.5 93 12.9 13.9 93 EAST RIM DIVIDE 7930 5.3 7.5 71 8.1 7.3 111 ELKHART PARK G.S. 9400 8.1 7.8 104 9.4 8.1 116 GROS VENTRE SUMMIT 8750 8.2 8.6 95 9.4 7.8 121 GUNSIGHT PASS 9820 8.5 -M * 9.5 -M * KENDALL R.S. 7740 6.9 8.7 79 9.2 8.7 106 LOOMIS PARK 8240 10.2 10.0 102 12.6 10.6 119 NEW FORK LAKE 8340 7.5 6.8 110 7.4 7.2 103 SNIDER BASIN 8060 8.7 8.7 100 9.5 10.0 95 SPRING CREEK DIVIDE 9000 15.7 15.5 101 16.6 16.6 100 TRIPLE PEAK 8500 15.4 14.9 103 17.2 14.5 119 ----- ----- Basin wide percent of average 95 106 LOWER GREEN RIVER HAMS FORK 7840 5.1 7.3 70 6.1 7.5 81 HEWINTA 9519 3.8 5.7 67 6.6 8.4 79 HICKERSON PARK 9145 1.4 3.8 37 4.0 4.8 83 HOLE-IN-ROCK 9150 2.0 3.5 57 4.1 4.4 93 INDIAN CREEK 9425 12.3 15.7 78 12.1 15.2 80 KELLEY R.S. 8180 7.3 9.4 78 9.0 12.6 71 STEEL CREEK PARK 10200 5.4 8.3 65 8.4 9.1 92 ----- ----- Basin wide percent of average 69 81 UPPER BEAR RIVER BUG LAKE 7950 6.2 11.3 55 9.2 11.6 79 HAYDEN FORK 9212 8.4 8.4 100 11.1 12.3 90 KELLEY R.S. 8180 7.3 9.4 78 9.0 12.6 71 LILY LAKE 9156 6.7 7.1 94 8.6 10.4 83 MONTE CRISTO 8960 12.5 15.4 81 13.7 15.0 91 SALT RIVER SUMMIT 7760 7.3 7.7 95 9.0 11.4 79 TRIAL LAKE 9992 11.2 13.6 82 11.3 14.2 80 ----- ----- Basin wide percent of average 82 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.