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 FRIDAY: MARCH 13 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.7 17.1 80 16.5 19.8 83 COTTONWOOD CREEK 7670 22.6 20.8 109 26.0 24.7 105 GRAND TARGHEE 9260 35.3 -M * 28.1 -M * GRANITE CREEK 6770 14.7 17.5 84 18.9 18.5 102 GRASSY LAKE 7265 28.0 32.1 87 30.2 33.0 92 GROS VENTRE SUMMIT 8750 9.9 12.6 79 12.2 11.6 105 GUNSIGHT PASS 9820 12.4 -M * 13.1 -M * LEWIS LAKE DIVIDE 7850 24.7 32.1 77 26.9 33.7 80 PHILLIPS BENCH 8200 22.6 26.0 87 24.3 26.4 92 SALT RIVER SUMMIT 7760 12.2 13.1 93 13.4 16.9 79 SNAKE RIVER STATION 6920 15.2 17.9 85 19.1 20.6 93 SPRING CREEK DIVIDE 9000 23.4 23.9 98 23.1 24.0 96 THUMB DIVIDE 7980 15.8 17.0 93 16.8 17.2 98 TOGWOTEE PASS 9580 23.6 22.3 106 25.6 22.1 116 TWO OCEAN PLATEAU 9240 30.9 25.1 123 23.8 25.1 95 WILLOW CREEK 8380 29.7 27.4 108 33.7 29.0 116 ----- ----- Basin wide percent of average 94 96 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.0 21.5 93 18.3 18.3 100 BLACK BEAR 8170 31.0 35.9 86 30.3 36.1 84 CANYON 7870 12.1 12.4 98 12.9 13.9 93 FISHER CREEK 9100 32.4 31.9 102 30.9 32.9 94 MADISON PLATEAU 7750 18.7 22.8 82 20.3 23.8 85 NORTHEAST ENTRANCE 7350 10.1 10.5 96 12.2 11.5 106 PARKER PEAK 9400 22.5 19.6 115 17.1 14.7 116 SYLVAN LAKE 8420 17.2 20.3 85 19.4 19.1 102 THUMB DIVIDE 7980 15.8 17.0 93 16.8 17.2 98 TWO OCEAN PLATEAU 9240 30.9 25.1 123 23.8 25.1 95 WHISKEY CREEK 6800 13.9 15.7 89 17.2 18.8 91 WHITE MILL 8700 21.8 22.0 99 21.4 24.4 88 WOLVERINE 7650 10.7 11.3 95 10.4 11.8 88 ----- ----- Basin wide percent of average 97 94 WIND RIVER BURROUGHS CREEK 8750 13.6 13.5 101 14.4 14.7 98 COLD SPRINGS 9630 6.0 7.9 76 8.0 9.0 89 DEER PARK 9700 8.7 15.4 56 13.3 19.4 69 HOBBS PARK 10100 8.9 13.0 68 9.1 10.7 85 LITTLE WARM 9370 9.4 10.4 90 11.8 11.7 101 SOUTH PASS 9040 9.3 15.3 61 11.5 16.1 71 ST. LAWRENCE ALT 8620 2.6 6.5 40 5.9 7.5 79 TOGWOTEE PASS 9580 23.6 22.3 106 25.6 22.1 116 TOWNSEND CREEK 8700 5.4 7.6 71 8.0 9.6 83 ----- ----- Basin wide percent of average 78 89 BIGHORN BASIN BALD MTN. 9380 16.5 17.3 95 13.3 15.2 88 BEAR TRAP MEADOW 8200 7.8 4.9 159 8.0 6.9 116 BLACKWATER 9780 20.6 22.1 93 18.9 18.4 103 BONE SPRINGS DIV 9350 16.5 14.2 116 13.1 12.6 104 EVENING STAR 9200 25.7 26.9 96 26.8 23.1 116 GRAVE SPRINGS 8550 7.3 8.0 91 8.3 8.5 98 KIRWIN 9550 10.0 10.0 100 11.3 9.9 114 MARQUETTE 8760 3.3 7.4 45 6.6 8.1 81 MIDDLE POWDER 7760 9.0 9.9 91 9.1 10.4 87 OWL CREEK 8975 4.4 4.6 96 4.3 4.8 90 POWDER RIVER PASS 9480 11.4 9.5 120 12.8 10.8 119 SHELL CREEK 9580 14.8 12.7 117 14.4 11.6 124 SYLVAN LAKE 8420 17.2 20.3 85 19.4 19.1 102 SYLVAN ROAD 7120 13.1 12.0 109 16.1 16.3 99 TIMBER CREEK 7950 3.1 4.7 66 7.0 6.0 117 YOUNTS PEAK 8350 16.1 15.6 103 14.2 14.5 98 ----- ----- Basin wide percent of average 98 104 SHOSHONE RIVER BLACKWATER 9780 20.6 22.1 93 18.9 18.4 103 EVENING STAR 9200 25.7 26.9 96 26.8 23.1 116 KIRWIN 9550 10.0 10.0 100 11.3 9.9 114 MARQUETTE 8760 3.3 7.4 45 6.6 8.1 81 SYLVAN LAKE 8420 17.2 20.3 85 19.4 19.1 102 SYLVAN ROAD 7120 13.1 12.0 109 16.1 16.3 99 YOUNTS PEAK 8350 16.1 15.6 103 14.2 14.5 98 ----- ----- Basin wide percent of average 93 104 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.8 4.9 159 8.0 6.9 116 BIG GOOSE 7990 7.0 8.5 82 9.3 7.2 129 BONE SPRINGS DIV 9350 16.5 14.2 116 13.1 12.6 104 BURGESS JUNCTION 7880 9.8 9.8 100 10.4 10.3 101 CLOUD PEAK RESERVOIR 9860 14.4 11.2 129 13.8 10.7 129 DOME LAKE 8880 10.1 10.4 97 12.4 11.1 112 GRAVE SPRINGS 8550 7.3 8.0 91 8.3 8.5 98 HANSEN SAWMILL 8360 5.6 5.6 100 8.5 6.9 123 MIDDLE POWDER 7760 9.0 9.9 91 9.1 10.4 87 POWDER RIVER PASS 9480 11.4 9.5 120 12.8 10.8 119 SUCKER CREEK 8880 11.6 10.0 116 13.8 11.4 121 TIE CREEK 6870 4.1 5.7 72 10.8 8.4 129 ----- ----- Basin wide percent of average 106 113 BELLE FOURCHE BLIND PARK 6890 7.2 8.1 89 13.2 9.9 133 COLE CANYON 5910 5.6 6.1 92 10.5 5.9 178 NORTH RAPID CREEK 6130 8.2 7.3 112 11.7 7.9 148 ----- ----- Basin wide percent of average 98 149 UPPER N. PLATTE RIVER COLUMBINE 9160 24.5 23.4 105 23.3 22.5 104 DIVIDE PEAK 8880 19.7 17.2 115 21.3 18.4 116 ELK RIVER 8700 20.9 17.4 120 19.3 17.4 111 JOE WRIGHT 10120 19.7 18.6 106 24.2 21.8 111 NORTH FRENCH CREEK 10130 29.8 24.9 120 27.9 21.8 128 OLD BATTLE 10000 28.4 28.6 99 33.8 30.8 110 SAGE CREEK BASIN 7850 10.7 10.0 107 12.4 10.7 116 SOUTH BRUSH CREEK 8440 11.8 11.3 104 13.5 14.3 94 TOWER 10500 38.2 40.4 95 35.1 34.4 102 WEBBER SPRINGS 9250 21.7 23.7 92 25.0 23.7 105 WILLOW CREEK PASS 9540 11.1 10.4 107 10.5 11.2 94 ----- ----- Basin wide percent of average 105 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.5 20.6 95 18.3 19.0 96 CASPER MTN. 7900 8.3 12.2 68 10.5 12.1 87 DEADMAN HILL 10220 13.9 14.0 99 14.4 14.5 99 DEER PARK 9700 8.7 15.4 56 13.3 19.4 69 LAPRELE CREEK 8375 7.8 9.8 80 8.7 10.9 80 RENO HILL 8400 9.1 11.6 78 10.3 12.5 82 ROACH 9700 13.7 15.0 91 15.5 16.3 95 SAND LAKE 10050 25.2 27.9 90 23.5 20.9 112 SOUTH PASS 9040 9.3 15.3 61 11.5 16.1 71 WINDY PEAK 7900 6.9 6.9 100 7.7 9.1 85 ----- ----- Basin wide percent of average 82 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.2 10.9 139 15.4 13.6 113 DIVIDE PEAK 8880 19.7 17.2 115 21.3 18.4 116 OLD BATTLE 10000 28.4 28.6 99 33.8 30.8 110 SANDSTONE RS 8150 16.0 13.9 115 17.5 16.9 104 WHISKEY PARK 8950 29.6 26.5 112 29.2 25.3 115 ----- ----- Basin wide percent of average 112 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 13.1 82 10.5 12.1 87 BLIND BULL SUM 8650 22.0 25.2 87 17.4 20.2 86 EAST RIM DIVIDE 7930 8.6 11.9 72 10.9 11.0 99 ELKHART PARK G.S. 9400 11.1 12.1 92 12.2 11.8 103 GROS VENTRE SUMMIT 8750 9.9 12.6 79 12.2 11.6 105 GUNSIGHT PASS 9820 12.4 -M * 13.1 -M * KENDALL R.S. 7740 10.1 13.6 74 12.1 13.4 90 LOOMIS PARK 8240 14.6 15.9 92 16.7 15.9 105 NEW FORK LAKE 8340 10.2 10.3 99 9.4 10.3 91 SNIDER BASIN 8060 12.5 13.4 93 13.0 14.6 89 SPRING CREEK DIVIDE 9000 23.4 23.9 98 23.1 24.0 96 TRIPLE PEAK 8500 21.3 22.6 94 23.1 22.3 104 ----- ----- Basin wide percent of average 88 96 LOWER GREEN RIVER HAMS FORK 7840 9.7 12.0 81 9.8 11.1 88 HEWINTA 9519 6.9 10.1 68 10.0 12.6 79 HICKERSON PARK 9145 3.1 6.3 49 5.6 6.8 82 HOLE-IN-ROCK 9150 3.4 6.2 55 5.9 6.3 94 INDIAN CREEK 9425 20.2 24.5 82 18.3 22.7 81 KELLEY R.S. 8180 12.9 15.3 84 14.3 18.3 78 STEEL CREEK PARK 10200 9.3 13.8 67 12.4 14.0 89 ----- ----- Basin wide percent of average 74 83 UPPER BEAR RIVER BUG LAKE 7950 16.2 18.7 87 15.0 17.3 87 HAYDEN FORK 9212 14.4 14.5 99 17.0 18.5 92 KELLEY R.S. 8180 12.9 15.3 84 14.3 18.3 78 LILY LAKE 9156 11.1 11.7 95 13.2 15.3 86 MONTE CRISTO 8960 22.0 27.0 81 21.9 22.8 96 SALT RIVER SUMMIT 7760 12.2 13.1 93 13.4 16.9 79 TRIAL LAKE 9992 19.4 22.5 86 18.7 22.3 84 ----- ----- Basin wide percent of average 88 86 ----------------------------------------------------------------------------- -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.