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 6 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.2 16.4 80 15.8 19.0 83 COTTONWOOD CREEK 7670 22.1 19.3 115 25.5 23.6 108 GRAND TARGHEE 9260 33.4 -M * 27.3 -M * GRANITE CREEK 6770 14.2 16.6 86 18.5 17.9 103 GRASSY LAKE 7265 26.7 30.5 88 29.3 31.8 92 GROS VENTRE SUMMIT 8750 10.0 11.9 84 11.9 11.1 107 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * LEWIS LAKE DIVIDE 7850 23.1 30.6 75 26.1 32.4 81 PHILLIPS BENCH 8200 21.5 24.7 87 23.6 25.3 93 SALT RIVER SUMMIT 7760 11.7 12.5 94 13.0 16.2 80 SNAKE RIVER STATION 6920 14.7 17.1 86 18.6 19.9 93 SPRING CREEK DIVIDE 9000 22.6 22.8 99 22.4 23.0 97 THUMB DIVIDE 7980 14.9 16.0 93 16.1 16.5 98 TOGWOTEE PASS 9580 22.8 21.3 107 24.7 21.2 117 TWO OCEAN PLATEAU 9240 29.3 24.0 122 22.9 24.1 95 WILLOW CREEK 8380 28.5 26.1 109 32.5 27.8 117 ----- ----- Basin wide percent of average 95 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.4 20.4 95 17.7 17.5 101 BLACK BEAR 8170 29.3 34.3 85 29.3 34.3 85 CANYON 7870 11.6 11.8 98 12.5 13.3 94 FISHER CREEK 9100 31.4 30.5 103 29.9 31.5 95 MADISON PLATEAU 7750 17.5 21.8 80 19.2 22.8 84 NORTHEAST ENTRANCE 7350 9.7 10.0 97 12.0 11.1 108 PARKER PEAK 9400 21.7 18.8 115 16.4 14.1 116 SYLVAN LAKE 8420 16.6 19.3 86 18.8 18.3 103 THUMB DIVIDE 7980 14.9 16.0 93 16.1 16.5 98 TWO OCEAN PLATEAU 9240 29.3 24.0 122 22.9 24.1 95 WHISKEY CREEK 6800 12.7 15.0 85 15.8 17.9 88 WHITE MILL 8700 21.3 21.0 101 20.9 23.3 90 WOLVERINE 7650 10.5 10.9 96 10.0 11.4 88 ----- ----- Basin wide percent of average 97 94 WIND RIVER BURROUGHS CREEK 8750 13.2 13.0 102 13.9 14.1 99 COLD SPRINGS 9630 5.6 7.5 75 7.5 8.6 87 DEER PARK 9700 7.6 14.5 52 12.0 18.4 65 HOBBS PARK 10100 8.1 12.3 66 8.2 10.2 80 LITTLE WARM 9370 -M 9.9 * 11.1 11.2 99 SOUTH PASS 9040 8.3 14.6 57 10.4 15.4 68 ST. LAWRENCE ALT 8620 2.2 6.2 35 5.3 7.2 74 TOGWOTEE PASS 9580 22.8 21.3 107 24.7 21.2 117 TOWNSEND CREEK 8700 4.5 7.2 62 7.1 9.2 77 ----- ----- Basin wide percent of average 75 87 BIGHORN BASIN BALD MTN. 9380 16.0 16.5 97 13.0 14.5 90 BEAR TRAP MEADOW 8200 7.4 4.5 164 7.7 6.6 117 BLACKWATER 9780 19.7 21.0 94 18.1 17.7 102 BONE SPRINGS DIV 9350 16.0 13.6 118 12.7 11.9 107 EVENING STAR 9200 25.0 25.8 97 26.2 22.3 117 GRAVE SPRINGS 8550 6.7 7.6 88 7.7 8.0 96 KIRWIN 9550 9.6 9.5 101 10.8 9.4 115 MARQUETTE 8760 3.1 7.1 44 5.9 7.7 77 MIDDLE POWDER 7760 8.7 9.3 94 7.9 9.9 80 OWL CREEK 8975 4.1 4.3 95 3.9 4.5 87 POWDER RIVER PASS 9480 11.0 9.0 122 12.4 10.3 120 SHELL CREEK 9580 14.5 12.2 119 13.9 11.1 125 SYLVAN LAKE 8420 16.6 19.3 86 18.8 18.3 103 SYLVAN ROAD 7120 12.6 11.8 107 15.7 15.9 99 TIMBER CREEK 7950 3.0 4.3 70 6.1 5.6 109 YOUNTS PEAK 8350 15.7 15.1 104 14.0 13.9 101 ----- ----- Basin wide percent of average 99 104 SHOSHONE RIVER BLACKWATER 9780 19.7 21.0 94 18.1 17.7 102 EVENING STAR 9200 25.0 25.8 97 26.2 22.3 117 KIRWIN 9550 9.6 9.5 101 10.8 9.4 115 MARQUETTE 8760 3.1 7.1 44 5.9 7.7 77 SYLVAN LAKE 8420 16.6 19.3 86 18.8 18.3 103 SYLVAN ROAD 7120 12.6 11.8 107 15.7 15.9 99 YOUNTS PEAK 8350 15.7 15.1 104 14.0 13.9 101 ----- ----- Basin wide percent of average 93 104 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.4 4.5 164 7.7 6.6 117 BIG GOOSE 7990 6.8 8.0 85 9.1 6.9 132 BONE SPRINGS DIV 9350 16.0 13.6 118 12.7 11.9 107 BURGESS JUNCTION 7880 9.6 9.3 103 10.1 9.8 103 CLOUD PEAK RESERVOIR 9860 14.2 10.4 137 13.7 10.1 136 DOME LAKE 8880 10.0 9.8 102 12.1 10.5 115 GRAVE SPRINGS 8550 6.7 7.6 88 7.7 8.0 96 HANSEN SAWMILL 8360 5.4 5.4 100 7.9 6.5 122 MIDDLE POWDER 7760 8.7 9.3 94 7.9 9.9 80 POWDER RIVER PASS 9480 11.0 9.0 122 12.4 10.3 120 SUCKER CREEK 8880 11.3 9.5 119 13.3 10.8 123 TIE CREEK 6870 3.9 5.2 75 10.5 8.1 130 ----- ----- Basin wide percent of average 109 114 BELLE FOURCHE BLIND PARK 6890 7.9 7.5 105 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 10.9 7.6 143 ----- ----- Basin wide percent of average 106 148 UPPER N. PLATTE RIVER COLUMBINE 9160 23.9 22.5 106 22.4 21.5 104 DIVIDE PEAK 8880 18.8 16.2 116 20.5 17.6 116 ELK RIVER 8700 20.2 16.6 122 18.6 16.6 112 JOE WRIGHT 10120 18.5 17.7 105 22.8 20.8 110 NORTH FRENCH CREEK 10130 28.8 23.4 123 26.9 20.8 129 OLD BATTLE 10000 27.5 27.1 101 32.6 29.3 111 SAGE CREEK BASIN 7850 10.4 9.4 111 11.9 10.2 117 SOUTH BRUSH CREEK 8440 11.4 10.5 109 12.8 13.7 93 TOWER 10500 37.4 38.6 97 34.8 32.9 106 WEBBER SPRINGS 9250 20.9 22.2 94 24.0 22.7 106 WILLOW CREEK PASS 9540 10.7 9.9 108 9.8 10.7 92 ----- ----- Basin wide percent of average 107 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.7 19.5 96 17.5 18.0 97 CASPER MTN. 7900 8.3 11.6 72 10.4 11.4 91 DEADMAN HILL 10220 13.2 13.3 99 13.6 13.7 99 DEER PARK 9700 7.6 14.5 52 12.0 18.4 65 LAPRELE CREEK 8375 7.5 9.2 82 8.3 10.4 80 RENO HILL 8400 8.9 10.8 82 10.0 11.9 84 ROACH 9700 13.2 14.3 92 15.1 15.4 98 SAND LAKE 10050 24.1 26.1 92 22.4 19.9 113 SOUTH PASS 9040 8.3 14.6 57 10.4 15.4 68 WINDY PEAK 7900 6.7 6.3 106 7.3 8.7 84 ----- ----- Basin wide percent of average 83 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.6 10.1 135 14.7 12.7 116 DIVIDE PEAK 8880 18.8 16.2 116 20.5 17.6 116 OLD BATTLE 10000 27.5 27.1 101 32.6 29.3 111 SANDSTONE RS 8150 14.6 13.0 112 17.0 16.1 106 WHISKEY PARK 8950 28.0 24.8 113 28.3 24.1 117 ----- ----- Basin wide percent of average 112 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.9 12.5 79 9.8 11.7 84 BLIND BULL SUM 8650 21.2 23.8 89 17.0 19.5 87 EAST RIM DIVIDE 7930 8.2 11.4 72 10.6 10.5 101 ELKHART PARK G.S. 9400 10.8 11.5 94 11.8 11.3 104 GROS VENTRE SUMMIT 8750 10.0 11.9 84 11.9 11.1 107 GUNSIGHT PASS 9820 11.9 -M * 12.6 -M * KENDALL R.S. 7740 9.8 12.8 77 11.9 12.9 92 LOOMIS PARK 8240 14.2 15.0 95 16.3 15.2 107 NEW FORK LAKE 8340 10.0 9.9 101 9.2 9.9 93 SNIDER BASIN 8060 12.1 12.8 95 12.6 14.1 89 SPRING CREEK DIVIDE 9000 22.6 22.8 99 22.4 23.0 97 TRIPLE PEAK 8500 20.8 21.5 97 22.6 21.3 106 ----- ----- Basin wide percent of average 90 97 LOWER GREEN RIVER HAMS FORK 7840 9.2 11.4 81 9.2 10.7 86 HEWINTA 9519 6.5 9.5 68 9.6 12.0 80 HICKERSON PARK 9145 2.4 6.0 40 5.2 6.4 81 HOLE-IN-ROCK 9150 3.1 5.9 53 5.4 6.0 90 INDIAN CREEK 9425 19.4 23.1 84 17.5 21.7 81 KELLEY R.S. 8180 12.2 14.5 84 13.8 17.6 78 STEEL CREEK PARK 10200 7.9 13.1 60 12.1 13.3 91 ----- ----- Basin wide percent of average 73 83 UPPER BEAR RIVER BUG LAKE 7950 14.8 17.7 84 14.0 16.6 84 HAYDEN FORK 9212 13.4 13.6 99 16.2 17.6 92 KELLEY R.S. 8180 12.2 14.5 84 13.8 17.6 78 LILY LAKE 9156 10.6 11.1 95 12.6 14.7 86 MONTE CRISTO 8960 20.9 25.6 82 20.9 21.8 96 SALT RIVER SUMMIT 7760 11.7 12.5 94 13.0 16.2 80 TRIAL LAKE 9992 18.7 21.3 88 17.9 21.2 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.