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: MARCH 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 12.9 16.2 80 15.6 18.8 83 COTTONWOOD CREEK 7670 21.9 18.9 116 25.4 23.3 109 GRAND TARGHEE 9260 33.1 -M * 27.2 -M * GRANITE CREEK 6770 14.1 16.4 86 18.5 17.6 105 GRASSY LAKE 7265 25.6 30.0 85 28.5 31.4 91 GROS VENTRE SUMMIT 8750 10.0 11.7 85 11.9 10.9 109 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * LEWIS LAKE DIVIDE 7850 21.7 30.1 72 25.4 32.0 79 PHILLIPS BENCH 8200 20.9 24.3 86 23.2 25.0 93 SALT RIVER SUMMIT 7760 11.7 12.3 95 13.0 16.0 81 SNAKE RIVER STATION 6920 13.9 16.8 83 17.8 19.7 90 SPRING CREEK DIVIDE 9000 22.3 22.5 99 22.3 22.8 98 THUMB DIVIDE 7980 13.7 15.7 87 15.2 16.3 93 TOGWOTEE PASS 9580 22.6 21.0 108 24.6 20.9 118 TWO OCEAN PLATEAU 9240 28.2 23.7 119 22.2 23.7 94 WILLOW CREEK 8380 27.8 25.8 108 32.1 27.4 117 ----- ----- Basin wide percent of average 94 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 18.7 20.1 93 17.1 17.3 99 BLACK BEAR 8170 28.1 33.6 84 28.4 33.8 84 CANYON 7870 11.1 11.6 96 12.0 13.2 91 FISHER CREEK 9100 30.1 30.1 100 28.7 31.0 93 MADISON PLATEAU 7750 16.5 21.3 77 18.4 22.4 82 NORTHEAST ENTRANCE 7350 9.3 9.9 94 11.5 10.9 106 PARKER PEAK 9400 20.9 18.5 113 15.8 13.9 114 SYLVAN LAKE 8420 15.5 19.0 82 17.8 18.1 98 THUMB DIVIDE 7980 13.7 15.7 87 15.2 16.3 93 TWO OCEAN PLATEAU 9240 28.2 23.7 119 22.2 23.7 94 WHISKEY CREEK 6800 12.1 14.7 82 15.2 17.7 86 WHITE MILL 8700 20.3 20.7 98 20.2 23.0 88 WOLVERINE 7650 10.2 10.8 94 9.8 11.3 87 ----- ----- Basin wide percent of average 94 92 WIND RIVER BURROUGHS CREEK 8750 13.2 12.8 103 13.9 13.9 100 COLD SPRINGS 9630 5.7 7.3 78 7.5 8.5 88 DEER PARK 9700 7.7 14.4 53 12.1 18.2 66 HOBBS PARK 10100 8.1 12.0 68 8.3 10.1 82 LITTLE WARM 9370 8.8 9.7 91 11.1 11.0 101 SOUTH PASS 9040 8.4 14.3 59 10.1 15.2 66 ST. LAWRENCE ALT 8620 2.4 6.0 40 5.3 7.1 75 TOGWOTEE PASS 9580 22.6 21.0 108 24.6 20.9 118 TOWNSEND CREEK 8700 4.9 7.0 70 7.2 9.0 80 ----- ----- Basin wide percent of average 78 88 BIGHORN BASIN BALD MTN. 9380 15.9 16.3 98 13.0 14.3 91 BEAR TRAP MEADOW 8200 7.6 4.4 173 7.7 6.5 118 BLACKWATER 9780 18.7 20.7 90 17.3 17.4 99 BONE SPRINGS DIV 9350 15.8 13.4 118 12.5 11.8 106 EVENING STAR 9200 24.1 25.4 95 25.4 22.0 115 GRAVE SPRINGS 8550 6.9 7.5 92 7.7 7.9 97 KIRWIN 9550 9.7 9.2 105 10.9 9.3 117 MARQUETTE 8760 3.1 7.0 44 6.3 7.6 83 MIDDLE POWDER 7760 8.8 9.2 96 8.8 9.7 91 OWL CREEK 8975 4.3 4.2 102 4.1 4.5 91 POWDER RIVER PASS 9480 10.9 8.9 122 12.4 10.1 123 SHELL CREEK 9580 14.5 12.0 121 13.8 10.9 127 SYLVAN LAKE 8420 15.5 19.0 82 17.8 18.1 98 SYLVAN ROAD 7120 11.9 11.5 103 15.0 15.7 96 TIMBER CREEK 7950 3.1 4.2 74 6.7 5.5 122 YOUNTS PEAK 8350 15.6 14.8 105 13.9 13.8 101 ----- ----- Basin wide percent of average 99 104 SHOSHONE RIVER BLACKWATER 9780 18.7 20.7 90 17.3 17.4 99 EVENING STAR 9200 24.1 25.4 95 25.4 22.0 115 KIRWIN 9550 9.7 9.2 105 10.9 9.3 117 MARQUETTE 8760 3.1 7.0 44 6.3 7.6 83 SYLVAN LAKE 8420 15.5 19.0 82 17.8 18.1 98 SYLVAN ROAD 7120 11.9 11.5 103 15.0 15.7 96 YOUNTS PEAK 8350 15.6 14.8 105 13.9 13.8 101 ----- ----- Basin wide percent of average 92 103 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.6 4.4 173 7.7 6.5 118 BIG GOOSE 7990 6.9 7.8 88 9.1 6.9 132 BONE SPRINGS DIV 9350 15.8 13.4 118 12.5 11.8 106 BURGESS JUNCTION 7880 9.6 9.1 105 10.1 9.6 105 CLOUD PEAK RESERVOIR 9860 14.1 10.2 138 13.6 9.9 137 DOME LAKE 8880 10.0 9.6 104 12.0 10.4 115 GRAVE SPRINGS 8550 6.9 7.5 92 7.7 7.9 97 HANSEN SAWMILL 8360 5.4 5.2 104 8.2 6.4 128 MIDDLE POWDER 7760 8.8 9.2 96 8.8 9.7 91 POWDER RIVER PASS 9480 10.9 8.9 122 12.4 10.1 123 SUCKER CREEK 8880 11.4 9.4 121 13.5 10.7 126 TIE CREEK 6870 3.9 5.1 76 10.6 8.0 132 ----- ----- Basin wide percent of average 112 117 BELLE FOURCHE BLIND PARK 6890 8.1 7.3 111 12.8 9.4 136 COLE CANYON 5910 5.7 5.8 98 10.0 5.6 179 NORTH RAPID CREEK 6130 8.0 6.9 116 11.1 7.6 146 ----- ----- Basin wide percent of average 109 150 UPPER N. PLATTE RIVER COLUMBINE 9160 23.9 22.2 108 22.5 21.2 106 DIVIDE PEAK 8880 18.6 15.9 117 20.3 17.3 117 ELK RIVER 8700 20.1 16.3 123 18.7 16.3 115 JOE WRIGHT 10120 18.8 17.5 107 22.7 20.5 111 NORTH FRENCH CREEK 10130 28.6 23.0 124 26.8 20.5 131 OLD BATTLE 10000 27.5 26.7 103 32.4 28.9 112 SAGE CREEK BASIN 7850 10.4 9.2 113 11.8 10.0 118 SOUTH BRUSH CREEK 8440 11.0 10.2 108 12.9 13.5 96 TOWER 10500 37.3 38.1 98 34.8 32.4 107 WEBBER SPRINGS 9250 20.7 21.8 95 23.8 22.4 106 WILLOW CREEK PASS 9540 10.8 9.8 110 9.8 10.5 93 ----- ----- Basin wide percent of average 108 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.7 19.3 97 17.4 17.8 98 CASPER MTN. 7900 8.4 11.5 73 10.4 11.3 92 DEADMAN HILL 10220 13.3 13.2 101 13.6 13.5 101 DEER PARK 9700 7.7 14.4 53 12.1 18.2 66 LAPRELE CREEK 8375 7.7 9.1 85 8.4 10.2 82 RENO HILL 8400 9.0 10.6 85 10.3 11.7 88 ROACH 9700 13.3 14.1 94 15.2 15.1 101 SAND LAKE 10050 24.0 25.7 93 22.5 19.6 115 SOUTH PASS 9040 8.4 14.3 59 10.1 15.2 66 WINDY PEAK 7900 6.8 6.2 110 7.4 8.6 86 ----- ----- Basin wide percent of average 85 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.5 9.9 136 14.7 12.5 118 DIVIDE PEAK 8880 18.6 15.9 117 20.3 17.3 117 OLD BATTLE 10000 27.5 26.7 103 32.4 28.9 112 SANDSTONE RS 8150 14.4 12.7 113 16.8 15.9 106 WHISKEY PARK 8950 27.4 24.3 113 28.1 23.7 119 ----- ----- Basin wide percent of average 113 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.0 12.3 81 10.0 11.5 87 BLIND BULL SUM 8650 20.9 23.4 89 16.9 19.3 88 EAST RIM DIVIDE 7930 8.2 11.2 73 10.6 10.4 102 ELKHART PARK G.S. 9400 11.0 11.3 97 11.9 11.1 107 GROS VENTRE SUMMIT 8750 10.0 11.7 85 11.9 10.9 109 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * KENDALL R.S. 7740 9.5 12.6 75 11.8 12.7 93 LOOMIS PARK 8240 14.1 14.7 96 16.3 15.0 109 NEW FORK LAKE 8340 10.0 9.7 103 9.5 9.8 97 SNIDER BASIN 8060 11.9 12.6 94 12.5 13.9 90 SPRING CREEK DIVIDE 9000 22.3 22.5 99 22.3 22.8 98 TRIPLE PEAK 8500 20.7 21.2 98 22.4 21.0 107 ----- ----- Basin wide percent of average 91 99 LOWER GREEN RIVER HAMS FORK 7840 8.7 11.2 78 9.2 10.5 88 HEWINTA 9519 6.6 9.3 71 9.7 11.8 82 HICKERSON PARK 9145 2.3 5.9 39 5.4 6.3 86 HOLE-IN-ROCK 9150 3.2 5.8 55 5.5 5.9 93 INDIAN CREEK 9425 19.0 22.7 84 17.6 21.4 82 KELLEY R.S. 8180 12.3 14.2 87 14.2 17.4 82 STEEL CREEK PARK 10200 8.7 12.9 67 11.9 13.1 91 ----- ----- Basin wide percent of average 74 85 UPPER BEAR RIVER BUG LAKE 7950 14.5 17.4 83 13.7 16.4 84 HAYDEN FORK 9212 12.9 13.4 96 16.1 17.3 93 KELLEY R.S. 8180 12.3 14.2 87 14.2 17.4 82 LILY LAKE 9156 10.7 11.0 97 12.4 14.5 86 MONTE CRISTO 8960 20.1 25.1 80 20.4 21.5 95 SALT RIVER SUMMIT 7760 11.7 12.3 95 13.0 16.0 81 TRIAL LAKE 9992 18.4 21.0 88 17.8 20.9 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.