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 24 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.9 15.4 77 14.5 17.8 81 COTTONWOOD CREEK 7670 20.3 17.4 117 23.8 22.1 108 GRAND TARGHEE 9260 30.8 -M * 26.3 -M * GRANITE CREEK 6770 12.7 15.3 83 17.1 16.7 102 GRASSY LAKE 7265 23.9 28.2 85 27.0 29.8 91 GROS VENTRE SUMMIT 8750 9.0 11.0 82 10.8 10.3 105 GUNSIGHT PASS 9820 10.8 -M * 11.8 -M * LEWIS LAKE DIVIDE 7850 19.8 28.3 70 23.7 30.2 78 PHILLIPS BENCH 8200 19.6 22.8 86 21.8 23.6 92 SALT RIVER SUMMIT 7760 10.5 11.6 91 12.0 15.1 79 SNAKE RIVER STATION 6920 13.0 15.8 82 16.8 18.7 90 SPRING CREEK DIVIDE 9000 20.1 21.2 95 20.4 21.6 94 THUMB DIVIDE 7980 11.8 14.6 81 13.6 15.3 89 TOGWOTEE PASS 9580 21.3 19.9 107 23.2 19.9 117 TWO OCEAN PLATEAU 9240 25.8 22.4 115 20.3 22.4 91 WILLOW CREEK 8380 25.4 24.3 105 -M 25.9 * ----- ----- Basin wide percent of average 91 93 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 16.7 19.3 87 15.4 16.5 93 BLACK BEAR 8170 24.9 31.8 78 25.6 31.8 81 CANYON 7870 9.5 11.0 86 10.4 12.5 83 FISHER CREEK 9100 26.6 28.6 93 25.4 29.3 87 MADISON PLATEAU 7750 14.0 20.1 70 15.9 21.2 75 NORTHEAST ENTRANCE 7350 8.1 9.4 86 10.4 10.4 100 PARKER PEAK 9400 18.9 17.7 107 14.3 13.2 108 SYLVAN LAKE 8420 14.2 18.2 78 16.4 17.3 95 THUMB DIVIDE 7980 11.8 14.6 81 13.6 15.3 89 TWO OCEAN PLATEAU 9240 25.8 22.4 115 20.3 22.4 91 WHISKEY CREEK 6800 10.2 13.9 73 13.2 16.6 80 WHITE MILL 8700 17.8 19.6 91 17.7 21.8 81 WOLVERINE 7650 9.2 10.4 88 9.2 10.8 85 ----- ----- Basin wide percent of average 88 87 WIND RIVER BURROUGHS CREEK 8750 12.6 12.3 102 13.2 13.2 100 COLD SPRINGS 9630 5.1 7.0 73 6.9 8.1 85 DEER PARK 9700 6.8 13.9 49 10.7 17.2 62 HOBBS PARK 10100 7.3 11.6 63 7.6 9.5 80 LITTLE WARM 9370 8.2 9.2 89 10.4 10.5 99 SOUTH PASS 9040 7.4 13.6 54 9.5 14.5 66 ST. LAWRENCE ALT 8620 2.1 5.7 37 5.1 6.7 76 TOGWOTEE PASS 9580 21.3 19.9 107 23.2 19.9 117 TOWNSEND CREEK 8700 4.5 6.7 67 6.8 8.6 79 ----- ----- Basin wide percent of average 75 86 BIGHORN BASIN BALD MTN. 9380 15.3 15.5 99 12.6 13.6 93 BEAR TRAP MEADOW 8200 7.1 4.2 169 7.4 6.2 119 BLACKWATER 9780 17.0 19.9 85 15.8 16.6 95 BONE SPRINGS DIV 9350 15.3 12.6 121 12.1 11.2 108 EVENING STAR 9200 22.3 24.3 92 23.6 21.0 112 GRAVE SPRINGS 8550 6.8 6.8 100 7.6 7.4 103 KIRWIN 9550 9.0 8.9 101 10.2 8.9 115 MARQUETTE 8760 3.1 6.7 46 6.2 7.2 86 MIDDLE POWDER 7760 8.6 8.6 100 8.6 9.3 92 OWL CREEK 8975 4.1 4.0 102 4.0 4.3 93 POWDER RIVER PASS 9480 10.4 8.4 124 11.9 9.6 124 SHELL CREEK 9580 13.9 11.4 122 13.3 10.5 127 SYLVAN LAKE 8420 14.2 18.2 78 16.4 17.3 95 SYLVAN ROAD 7120 10.9 10.9 100 14.0 15.2 92 TIMBER CREEK 7950 3.0 4.1 73 6.5 5.2 125 YOUNTS PEAK 8350 14.5 14.3 101 13.0 13.1 99 ----- ----- Basin wide percent of average 98 104 SHOSHONE RIVER BLACKWATER 9780 17.0 19.9 85 15.8 16.6 95 EVENING STAR 9200 22.3 24.3 92 23.6 21.0 112 KIRWIN 9550 9.0 8.9 101 10.2 8.9 115 MARQUETTE 8760 3.1 6.7 46 6.2 7.2 86 SYLVAN LAKE 8420 14.2 18.2 78 16.4 17.3 95 SYLVAN ROAD 7120 10.9 10.9 100 14.0 15.2 92 YOUNTS PEAK 8350 14.5 14.3 101 13.0 13.1 99 ----- ----- Basin wide percent of average 88 100 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.1 4.2 169 7.4 6.2 119 BIG GOOSE 7990 6.7 7.3 92 8.9 6.5 137 BONE SPRINGS DIV 9350 15.3 12.6 121 12.1 11.2 108 BURGESS JUNCTION 7880 9.4 8.7 108 10.0 9.1 110 CLOUD PEAK RESERVOIR 9860 13.5 9.6 141 12.8 9.4 136 DOME LAKE 8880 9.6 9.3 103 11.5 9.9 116 GRAVE SPRINGS 8550 6.8 6.8 100 7.6 7.4 103 HANSEN SAWMILL 8360 5.0 4.9 102 7.8 6.1 128 MIDDLE POWDER 7760 8.6 8.6 100 8.6 9.3 92 POWDER RIVER PASS 9480 10.4 8.4 124 11.9 9.6 124 SUCKER CREEK 8880 11.2 8.7 129 13.2 10.1 131 TIE CREEK 6870 4.0 4.7 85 10.5 7.6 138 ----- ----- Basin wide percent of average 115 119 BELLE FOURCHE BLIND PARK 6890 8.2 6.4 128 12.7 8.9 143 COLE CANYON 5910 4.9 5.5 89 9.4 5.3 177 NORTH RAPID CREEK 6130 7.8 6.5 120 10.9 7.2 151 ----- ----- Basin wide percent of average 114 154 UPPER N. PLATTE RIVER COLUMBINE 9160 23.0 20.9 110 21.4 20.0 107 DIVIDE PEAK 8880 18.4 15.0 123 20.0 16.3 123 ELK RIVER 8700 19.9 15.4 129 18.3 15.4 119 JOE WRIGHT 10120 17.9 16.6 108 21.7 19.3 112 NORTH FRENCH CREEK 10130 27.6 21.6 128 26.0 19.3 135 OLD BATTLE 10000 26.9 25.0 108 31.4 27.1 116 SAGE CREEK BASIN 7850 10.2 8.7 117 11.6 9.4 123 SOUTH BRUSH CREEK 8440 10.8 9.4 115 12.5 12.8 98 TOWER 10500 35.9 36.1 99 33.8 30.6 110 WEBBER SPRINGS 9250 20.2 20.1 100 23.4 21.2 110 WILLOW CREEK PASS 9540 10.6 9.2 115 9.5 9.9 96 ----- ----- Basin wide percent of average 112 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.8 18.2 98 16.6 16.7 99 CASPER MTN. 7900 8.3 10.8 77 10.4 10.6 98 DEADMAN HILL 10220 12.6 12.5 101 13.0 12.6 103 DEER PARK 9700 6.8 13.9 49 10.7 17.2 62 LAPRELE CREEK 8375 7.7 8.5 91 8.3 9.6 86 RENO HILL 8400 9.0 9.9 91 10.4 11.0 95 ROACH 9700 12.6 13.4 94 14.6 14.1 104 SAND LAKE 10050 23.1 23.9 97 21.4 18.5 116 SOUTH PASS 9040 7.4 13.6 54 9.5 14.5 66 WINDY PEAK 7900 6.5 5.7 114 7.2 8.1 89 ----- ----- Basin wide percent of average 86 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.3 9.2 155 14.6 11.8 124 DIVIDE PEAK 8880 18.4 15.0 123 20.0 16.3 123 OLD BATTLE 10000 26.9 25.0 108 31.4 27.1 116 SANDSTONE RS 8150 14.3 11.9 120 16.7 15.0 111 WHISKEY PARK 8950 26.4 22.6 117 27.1 22.5 120 ----- ----- Basin wide percent of average 120 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.9 11.6 77 9.0 10.9 83 BLIND BULL SUM 8650 18.9 22.0 86 15.6 18.3 85 EAST RIM DIVIDE 7930 7.2 10.5 69 9.8 9.8 100 ELKHART PARK G.S. 9400 10.1 10.6 95 11.2 10.5 107 GROS VENTRE SUMMIT 8750 9.0 11.0 82 10.8 10.3 105 GUNSIGHT PASS 9820 10.8 -M * 11.8 -M * KENDALL R.S. 7740 8.7 11.8 74 10.9 12.0 91 LOOMIS PARK 8240 12.7 13.8 92 15.0 14.2 106 NEW FORK LAKE 8340 9.4 9.2 102 8.9 9.3 96 SNIDER BASIN 8060 10.6 11.9 89 11.3 13.2 86 SPRING CREEK DIVIDE 9000 20.1 21.2 95 20.4 21.6 94 TRIPLE PEAK 8500 18.3 19.9 92 20.2 19.8 102 ----- ----- Basin wide percent of average 87 95 LOWER GREEN RIVER HAMS FORK 7840 8.2 10.4 79 8.5 10.0 85 HEWINTA 9519 6.3 8.6 73 9.1 11.1 82 HICKERSON PARK 9145 2.6 5.6 46 5.1 6.0 85 HOLE-IN-ROCK 9150 3.0 5.4 56 5.1 5.5 93 INDIAN CREEK 9425 17.1 21.2 81 16.1 20.2 80 KELLEY R.S. 8180 11.1 13.3 83 12.9 16.5 78 STEEL CREEK PARK 10200 8.1 12.0 68 11.3 12.3 92 ----- ----- Basin wide percent of average 74 83 UPPER BEAR RIVER BUG LAKE 7950 13.6 16.3 83 13.1 15.5 85 HAYDEN FORK 9212 12.8 12.4 103 15.6 16.3 96 KELLEY R.S. 8180 11.1 13.3 83 12.9 16.5 78 LILY LAKE 9156 10.2 10.3 99 11.9 13.7 87 MONTE CRISTO 8960 19.4 23.4 83 19.7 20.2 98 SALT RIVER SUMMIT 7760 10.5 11.6 91 12.0 15.1 79 TRIAL LAKE 9992 17.9 19.6 91 17.4 19.5 89 ----- ----- 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.