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 4 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.9 13.1 83 13.7 15.2 90 COTTONWOOD CREEK 7670 17.7 14.6 121 21.3 19.1 112 GRAND TARGHEE 9260 26.9 -M * 23.5 -M * GRANITE CREEK 6770 11.4 12.8 89 16.0 14.1 113 GRASSY LAKE 7265 20.2 23.7 85 23.4 25.7 91 GROS VENTRE SUMMIT 8750 8.5 9.7 88 10.1 8.8 115 GUNSIGHT PASS 9820 9.8 -M * 10.8 -M * LEWIS LAKE DIVIDE 7850 17.1 23.8 72 21.4 25.5 84 PHILLIPS BENCH 8200 17.8 19.1 93 20.0 20.0 100 SALT RIVER SUMMIT 7760 8.8 9.6 92 10.4 12.9 81 SNAKE RIVER STATION 6920 11.0 13.1 84 15.1 16.0 94 SPRING CREEK DIVIDE 9000 17.7 17.9 99 18.2 18.7 97 THUMB DIVIDE 7980 11.0 12.1 91 12.8 13.0 98 TOGWOTEE PASS 9580 19.4 17.3 112 21.3 17.2 124 TWO OCEAN PLATEAU 9240 24.4 19.4 126 18.7 18.9 99 WILLOW CREEK 8380 22.0 20.8 106 26.5 22.3 119 ----- ----- Basin wide percent of average 96 101 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.6 16.5 95 14.3 14.3 100 BLACK BEAR 8170 21.3 26.1 82 22.7 26.8 85 CANYON 7870 8.6 9.1 95 9.5 11.0 86 FISHER CREEK 9100 24.6 24.2 102 23.2 25.2 92 MADISON PLATEAU 7750 12.3 16.5 75 14.3 18.0 79 NORTHEAST ENTRANCE 7350 7.3 7.9 92 9.6 9.1 105 PARKER PEAK 9400 17.4 15.1 115 12.6 11.4 111 SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100 THUMB DIVIDE 7980 11.0 12.1 91 12.8 13.0 98 TWO OCEAN PLATEAU 9240 24.4 19.4 126 18.7 18.9 99 WHISKEY CREEK 6800 8.9 11.3 79 12.0 14.1 85 WHITE MILL 8700 16.2 16.4 99 16.0 18.7 86 WOLVERINE 7650 8.7 8.8 99 8.5 9.4 90 ----- ----- Basin wide percent of average 95 92 WIND RIVER BURROUGHS CREEK 8750 12.0 10.3 117 12.8 11.5 111 COLD SPRINGS 9630 4.9 6.1 80 6.7 7.2 93 DEER PARK 9700 6.3 11.6 54 10.2 14.9 68 HOBBS PARK 10100 6.8 9.9 69 7.3 8.4 87 LITTLE WARM 9370 7.5 7.9 95 9.5 9.3 102 SOUTH PASS 9040 7.0 11.5 61 9.1 12.6 72 ST. LAWRENCE ALT 8620 1.9 4.8 40 4.9 5.8 84 TOGWOTEE PASS 9580 19.4 17.3 112 21.3 17.2 124 TOWNSEND CREEK 8700 4.2 5.6 75 6.5 7.5 87 ----- ----- Basin wide percent of average 82 94 BIGHORN BASIN BALD MTN. 9380 14.1 13.7 103 11.6 12.0 97 BEAR TRAP MEADOW 8200 6.1 3.6 169 6.7 5.6 120 BLACKWATER 9780 16.3 16.8 97 15.0 14.5 103 BONE SPRINGS DIV 9350 14.4 10.8 133 11.2 9.8 114 EVENING STAR 9200 20.5 20.1 102 21.4 18.0 119 GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.5 102 KIRWIN 9550 8.8 7.8 113 10.0 7.8 128 MARQUETTE 8760 3.0 6.0 50 5.9 6.3 94 MIDDLE POWDER 7760 6.6 7.5 88 6.6 8.4 79 OWL CREEK 8975 3.7 3.5 106 3.7 3.8 97 POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.5 126 SHELL CREEK 9580 12.7 10.1 126 12.3 9.5 129 SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100 SYLVAN ROAD 7120 10.3 9.0 114 13.3 13.6 98 TIMBER CREEK 7950 2.8 3.7 76 5.9 4.6 128 YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.6 109 ----- ----- Basin wide percent of average 105 108 SHOSHONE RIVER BLACKWATER 9780 16.3 16.8 97 15.0 14.5 103 EVENING STAR 9200 20.5 20.1 102 21.4 18.0 119 KIRWIN 9550 8.8 7.8 113 10.0 7.8 128 MARQUETTE 8760 3.0 6.0 50 5.9 6.3 94 SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100 SYLVAN ROAD 7120 10.3 9.0 114 13.3 13.6 98 YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.6 109 ----- ----- Basin wide percent of average 98 107 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 3.6 169 6.7 5.6 120 BIG GOOSE 7990 5.9 6.2 95 8.2 5.8 141 BONE SPRINGS DIV 9350 14.4 10.8 133 11.2 9.8 114 BURGESS JUNCTION 7880 8.7 7.5 116 9.4 8.1 116 CLOUD PEAK RESERVOIR 9860 12.4 8.2 151 11.8 8.4 140 DOME LAKE 8880 8.7 8.1 107 10.8 8.9 121 GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.5 102 HANSEN SAWMILL 8360 4.4 4.3 102 7.2 5.4 133 MIDDLE POWDER 7760 6.6 7.5 88 6.6 8.4 79 POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.5 126 SUCKER CREEK 8880 10.4 7.4 141 12.3 9.0 137 TIE CREEK 6870 3.7 4.2 88 10.1 6.9 146 ----- ----- Basin wide percent of average 118 122 BELLE FOURCHE BLIND PARK 6890 7.5 5.5 136 11.9 7.9 151 COLE CANYON 5910 4.5 4.6 98 9.3 4.8 194 NORTH RAPID CREEK 6130 7.1 5.2 137 10.1 6.4 158 ----- ----- Basin wide percent of average 125 164 UPPER N. PLATTE RIVER COLUMBINE 9160 18.4 17.1 108 17.4 17.1 102 DIVIDE PEAK 8880 14.2 13.2 108 16.3 14.0 116 ELK RIVER 8700 16.2 12.7 128 15.7 13.0 121 JOE WRIGHT 10120 16.0 14.3 112 19.7 16.6 119 NORTH FRENCH CREEK 10130 21.6 18.8 115 20.9 16.7 125 OLD BATTLE 10000 20.9 20.6 101 25.4 23.0 110 SAGE CREEK BASIN 7850 7.5 7.7 97 8.8 8.1 109 SOUTH BRUSH CREEK 8440 9.5 7.7 123 11.2 11.1 101 TOWER 10500 28.4 30.9 92 28.7 26.1 110 WEBBER SPRINGS 9250 15.9 16.6 96 19.0 18.4 103 WILLOW CREEK PASS 9540 8.6 7.7 112 8.2 8.5 96 ----- ----- Basin wide percent of average 106 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.4 15.7 92 13.8 14.6 95 CASPER MTN. 7900 5.9 9.3 63 8.4 9.1 92 DEADMAN HILL 10220 11.1 10.8 103 11.6 10.8 107 DEER PARK 9700 6.3 11.6 54 10.2 14.9 68 LAPRELE CREEK 8375 5.3 7.4 72 6.3 8.3 76 RENO HILL 8400 7.2 8.6 84 8.3 9.5 87 ROACH 9700 11.3 11.3 100 12.9 11.9 108 SAND LAKE 10050 18.1 20.4 89 16.7 16.2 103 SOUTH PASS 9040 7.0 11.5 61 9.1 12.6 72 WINDY PEAK 7900 5.1 4.7 109 5.8 7.1 82 ----- ----- Basin wide percent of average 82 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.4 8.0 118 11.8 10.1 117 DIVIDE PEAK 8880 14.2 13.2 108 16.3 14.0 116 OLD BATTLE 10000 20.9 20.6 101 25.4 23.0 110 SANDSTONE RS 8150 10.3 10.0 103 13.3 12.8 104 WHISKEY PARK 8950 21.0 19.1 110 22.5 19.8 114 ----- ----- Basin wide percent of average 107 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.9 9.8 81 8.0 9.2 87 BLIND BULL SUM 8650 17.1 18.9 90 14.3 15.8 91 EAST RIM DIVIDE 7930 6.7 8.8 76 9.2 8.3 111 ELKHART PARK G.S. 9400 9.3 9.0 103 10.4 9.1 114 GROS VENTRE SUMMIT 8750 8.5 9.7 88 10.1 8.8 115 GUNSIGHT PASS 9820 9.8 -M * 10.8 -M * KENDALL R.S. 7740 8.0 10.1 79 10.2 10.0 102 LOOMIS PARK 8240 11.7 11.6 101 14.1 12.1 117 NEW FORK LAKE 8340 8.7 7.9 110 8.3 8.0 104 SNIDER BASIN 8060 9.6 10.1 95 10.3 11.3 91 SPRING CREEK DIVIDE 9000 17.7 17.9 99 18.2 18.7 97 TRIPLE PEAK 8500 16.8 17.1 98 18.6 16.6 112 ----- ----- Basin wide percent of average 93 103 LOWER GREEN RIVER HAMS FORK 7840 6.6 8.6 77 7.4 8.6 86 HEWINTA 9519 5.2 6.9 75 7.9 9.5 83 HICKERSON PARK 9145 1.9 4.6 41 4.3 5.3 81 HOLE-IN-ROCK 9150 2.3 4.3 53 4.4 4.9 90 INDIAN CREEK 9425 14.5 18.1 80 13.9 17.2 81 KELLEY R.S. 8180 9.4 11.0 85 11.1 14.2 78 STEEL CREEK PARK 10200 6.7 9.7 69 9.8 10.4 94 ----- ----- Basin wide percent of average 74 84 UPPER BEAR RIVER BUG LAKE 7950 10.1 13.6 74 11.1 13.2 84 HAYDEN FORK 9212 10.7 10.1 106 13.3 13.9 96 KELLEY R.S. 8180 9.4 11.0 85 11.1 14.2 78 LILY LAKE 9156 8.5 8.5 100 10.3 11.7 88 MONTE CRISTO 8960 16.1 18.9 85 16.8 17.2 98 SALT RIVER SUMMIT 7760 8.8 9.6 92 10.4 12.9 81 TRIAL LAKE 9992 14.4 16.2 89 14.2 16.3 87 ----- ----- Basin wide percent of average 89 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.