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 THURSDAY: MARCH 5 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.0 16.3 80 15.6 18.9 83 COTTONWOOD CREEK 7670 22.0 19.1 115 25.4 23.5 108 GRAND TARGHEE 9260 33.4 -M * 27.2 -M * GRANITE CREEK 6770 14.2 16.5 86 18.5 17.8 104 GRASSY LAKE 7265 26.3 30.2 87 29.0 31.6 92 GROS VENTRE SUMMIT 8750 9.9 11.8 84 11.8 11.0 107 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * LEWIS LAKE DIVIDE 7850 22.5 30.3 74 25.8 32.2 80 PHILLIPS BENCH 8200 21.1 24.5 86 23.3 25.1 93 SALT RIVER SUMMIT 7760 11.7 12.4 94 13.0 16.1 81 SNAKE RIVER STATION 6920 14.3 16.9 85 18.3 19.8 92 SPRING CREEK DIVIDE 9000 22.4 22.7 99 22.4 22.9 98 THUMB DIVIDE 7980 14.4 15.8 91 15.9 16.4 97 TOGWOTEE PASS 9580 22.7 21.1 108 24.7 21.1 117 TWO OCEAN PLATEAU 9240 28.9 23.8 121 22.7 23.9 95 WILLOW CREEK 8380 28.2 26.0 108 32.5 27.6 118 ----- ----- Basin wide percent of average 95 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.3 20.2 96 17.6 17.4 101 BLACK BEAR 8170 28.4 33.9 84 28.7 34.1 84 CANYON 7870 11.5 11.7 98 12.4 13.3 93 FISHER CREEK 9100 30.9 30.3 102 29.6 31.3 95 MADISON PLATEAU 7750 16.7 21.4 78 18.5 22.6 82 NORTHEAST ENTRANCE 7350 9.8 10.0 98 12.0 11.0 109 PARKER PEAK 9400 21.5 18.6 116 -M 14.0 * SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102 THUMB DIVIDE 7980 14.4 15.8 91 15.9 16.4 97 TWO OCEAN PLATEAU 9240 28.9 23.8 121 22.7 23.9 95 WHISKEY CREEK 6800 12.2 14.8 82 15.3 17.8 86 WHITE MILL 8700 21.1 20.8 101 21.0 23.2 91 WOLVERINE 7650 10.6 10.8 98 10.2 11.4 89 ----- ----- Basin wide percent of average 96 92 WIND RIVER BURROUGHS CREEK 8750 13.2 12.9 102 13.9 14.0 99 COLD SPRINGS 9630 5.7 7.4 77 7.5 8.6 87 DEER PARK 9700 7.6 14.5 52 12.0 18.3 66 HOBBS PARK 10100 8.1 12.1 67 8.3 10.1 82 LITTLE WARM 9370 8.7 9.7 90 11.1 11.1 100 SOUTH PASS 9040 8.3 14.4 58 10.2 15.3 67 ST. LAWRENCE ALT 8620 2.3 6.1 38 5.3 7.1 75 TOGWOTEE PASS 9580 22.7 21.1 108 24.7 21.1 117 TOWNSEND CREEK 8700 4.7 7.1 66 7.2 9.1 79 ----- ----- Basin wide percent of average 77 87 BIGHORN BASIN BALD MTN. 9380 16.0 16.3 98 13.0 14.4 90 BEAR TRAP MEADOW 8200 7.5 4.5 167 7.7 6.5 118 BLACKWATER 9780 19.5 20.9 93 18.0 17.5 103 BONE SPRINGS DIV 9350 15.8 13.5 117 12.4 11.9 104 EVENING STAR 9200 24.7 25.6 96 25.9 22.2 117 GRAVE SPRINGS 8550 6.8 7.5 91 7.7 8.0 96 KIRWIN 9550 9.6 9.3 103 10.8 9.4 115 MARQUETTE 8760 3.1 7.0 44 6.1 7.7 79 MIDDLE POWDER 7760 8.7 9.2 95 7.9 9.8 81 OWL CREEK 8975 4.1 4.2 98 4.0 4.5 89 POWDER RIVER PASS 9480 10.8 8.9 121 12.4 10.2 122 SHELL CREEK 9580 14.5 12.1 120 13.8 11.0 125 SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102 SYLVAN ROAD 7120 12.5 11.6 108 15.5 15.8 98 TIMBER CREEK 7950 3.0 4.3 70 6.0 5.5 109 YOUNTS PEAK 8350 15.6 14.9 105 13.9 13.9 100 ----- ----- Basin wide percent of average 100 104 SHOSHONE RIVER BLACKWATER 9780 19.5 20.9 93 18.0 17.5 103 EVENING STAR 9200 24.7 25.6 96 25.9 22.2 117 KIRWIN 9550 9.6 9.3 103 10.8 9.4 115 MARQUETTE 8760 3.1 7.0 44 6.1 7.7 79 SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102 SYLVAN ROAD 7120 12.5 11.6 108 15.5 15.8 98 YOUNTS PEAK 8350 15.6 14.9 105 13.9 13.9 100 ----- ----- Basin wide percent of average 93 104 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.5 4.5 167 7.7 6.5 118 BIG GOOSE 7990 6.9 7.9 87 9.0 6.9 130 BONE SPRINGS DIV 9350 15.8 13.5 117 12.4 11.9 104 BURGESS JUNCTION 7880 9.7 9.2 105 10.1 9.7 104 CLOUD PEAK RESERVOIR 9860 14.1 10.3 137 13.4 10.0 134 DOME LAKE 8880 9.9 9.7 102 12.0 10.4 115 GRAVE SPRINGS 8550 6.8 7.5 91 7.7 8.0 96 HANSEN SAWMILL 8360 5.4 5.3 102 8.1 6.4 127 MIDDLE POWDER 7760 8.7 9.2 95 7.9 9.8 81 POWDER RIVER PASS 9480 10.8 8.9 121 12.4 10.2 122 SUCKER CREEK 8880 11.4 9.4 121 13.5 10.7 126 TIE CREEK 6870 4.0 5.1 78 10.5 8.0 131 ----- ----- Basin wide percent of average 110 115 BELLE FOURCHE BLIND PARK 6890 7.9 7.4 107 12.8 9.5 135 COLE CANYON 5910 5.7 5.9 97 10.0 5.6 179 NORTH RAPID CREEK 6130 8.1 7.0 116 11.1 7.6 146 ----- ----- Basin wide percent of average 107 149 UPPER N. PLATTE RIVER COLUMBINE 9160 23.9 22.4 107 22.5 21.3 106 DIVIDE PEAK 8880 18.6 16.0 116 20.3 17.4 117 ELK RIVER 8700 20.0 16.5 121 18.6 16.5 113 JOE WRIGHT 10120 18.7 17.6 106 22.7 20.6 110 NORTH FRENCH CREEK 10130 28.7 23.2 124 26.8 20.7 129 OLD BATTLE 10000 27.4 26.9 102 32.4 29.1 111 SAGE CREEK BASIN 7850 10.3 9.3 111 11.8 10.1 117 SOUTH BRUSH CREEK 8440 11.2 10.3 109 12.8 13.6 94 TOWER 10500 37.4 38.3 98 34.8 32.6 107 WEBBER SPRINGS 9250 20.7 22.0 94 23.8 22.5 106 WILLOW CREEK PASS 9540 10.8 9.8 110 9.8 10.6 92 ----- ----- Basin wide percent of average 107 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.6 19.4 96 17.5 17.9 98 CASPER MTN. 7900 8.4 11.5 73 10.4 11.3 92 DEADMAN HILL 10220 13.2 13.2 100 13.6 13.6 100 DEER PARK 9700 7.6 14.5 52 12.0 18.3 66 LAPRELE CREEK 8375 7.7 9.1 85 8.5 10.3 83 RENO HILL 8400 8.9 10.7 83 10.2 11.8 86 ROACH 9700 13.3 14.2 94 15.2 15.3 99 SAND LAKE 10050 24.0 25.9 93 22.4 19.7 114 SOUTH PASS 9040 8.3 14.4 58 10.2 15.3 67 WINDY PEAK 7900 6.7 6.2 108 7.3 8.7 84 ----- ----- Basin wide percent of average 84 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.4 10.0 134 14.6 12.6 116 DIVIDE PEAK 8880 18.6 16.0 116 20.3 17.4 117 OLD BATTLE 10000 27.4 26.9 102 32.4 29.1 111 SANDSTONE RS 8150 14.2 12.8 111 16.8 16.0 105 WHISKEY PARK 8950 27.8 24.5 113 28.1 23.9 118 ----- ----- Basin wide percent of average 112 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.1 12.4 81 10.0 11.6 86 BLIND BULL SUM 8650 20.9 23.6 89 16.9 19.4 87 EAST RIM DIVIDE 7930 8.2 11.3 73 10.6 10.4 102 ELKHART PARK G.S. 9400 10.9 11.4 96 11.9 11.2 106 GROS VENTRE SUMMIT 8750 9.9 11.8 84 11.8 11.0 107 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * KENDALL R.S. 7740 9.7 12.7 76 11.8 12.8 92 LOOMIS PARK 8240 14.2 14.9 95 16.3 15.1 108 NEW FORK LAKE 8340 9.9 9.8 101 9.4 9.8 96 SNIDER BASIN 8060 12.0 12.7 94 12.6 14.0 90 SPRING CREEK DIVIDE 9000 22.4 22.7 99 22.4 22.9 98 TRIPLE PEAK 8500 20.8 21.3 98 22.5 21.2 106 ----- ----- Basin wide percent of average 91 98 LOWER GREEN RIVER HAMS FORK 7840 9.2 11.3 81 9.2 10.6 87 HEWINTA 9519 6.2 9.4 66 9.6 11.9 81 HICKERSON PARK 9145 2.2 6.0 37 5.1 6.4 80 HOLE-IN-ROCK 9150 3.1 5.9 53 5.4 5.9 92 INDIAN CREEK 9425 19.3 22.9 84 17.7 21.5 82 KELLEY R.S. 8180 12.4 14.3 87 14.2 17.5 81 STEEL CREEK PARK 10200 8.5 13.0 65 11.9 13.2 90 ----- ----- Basin wide percent of average 74 84 UPPER BEAR RIVER BUG LAKE 7950 14.8 17.5 85 14.0 16.5 85 HAYDEN FORK 9212 12.9 13.5 96 16.0 17.5 91 KELLEY R.S. 8180 12.4 14.3 87 14.2 17.5 81 LILY LAKE 9156 10.5 11.1 95 12.4 14.6 85 MONTE CRISTO 8960 20.6 25.4 81 20.8 21.6 96 SALT RIVER SUMMIT 7760 11.7 12.4 94 13.0 16.1 81 TRIAL LAKE 9992 18.4 21.1 87 17.8 21.0 85 ----- ----- Basin wide percent of average 88 87 ----------------------------------------------------------------------------- -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.