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 MONDAY: MARCH 20 , 2006 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.5 17.5 117 24.5 20.5 120 COTTONWOOD CREEK 7600 27.3 22.2 123 29.6 25.9 114 GRANITE CREEK 6770 20.6 18.1 114 22.5 19.1 118 GRASSY LAKE 7265 37.0 33.8 109 40.5 34.3 118 GROS VENTRE SUMMIT 8750 11.5 13.3 86 12.1 12.1 100 LEWIS LAKE DIVIDE 7850 39.8 33.7 118 38.0 35.0 109 PHILLIPS BENCH 8200 31.7 27.3 116 31.9 27.5 116 SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.8 102 SNAKE RIVER STATION 6920 20.7 18.6 111 25.3 21.3 119 SPRING CREEK DIVIDE 9000 29.4 25.1 117 -M 25.1 * THUMB DIVIDE 7980 18.2 17.9 102 18.2 17.9 102 TOGWOTEE PASS 9580 23.5 23.4 100 24.6 23.3 106 TWO OCEAN PLATEAU 9240 33.9 26.4 128 25.0 26.2 95 WILLOW CREEK 8450 33.3 28.8 116 37.6 30.4 124 ----- ----- Basin wide percent of average 113 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.7 22.4 92 18.2 19.1 95 BLACK BEAR 8170 46.6 37.4 125 -M 38.0 * CANYON 8090 14.1 13.1 108 16.6 14.6 114 FISHER CREEK 9100 38.1 33.2 115 35.4 34.4 103 MADISON PLATEAU 7750 25.9 23.9 108 30.2 25.2 120 NORTHEAST ENTRANCE 7350 9.9 10.8 92 11.9 12.0 99 PARKER PEAK 9400 17.6 20.5 86 15.8 15.4 103 SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106 THUMB DIVIDE 7980 18.2 17.9 102 18.2 17.9 102 TWO OCEAN PLATEAU 9240 33.9 26.4 128 25.0 26.2 95 WHISKEY CREEK 6800 15.6 16.3 96 22.0 19.7 112 WHITE MILL 8700 24.7 23.0 107 22.1 25.5 87 WOLVERINE 7650 8.9 11.4 78 8.6 12.2 70 ----- ----- Basin wide percent of average 105 101 WIND RIVER BURROUGHS CREEK 8750 13.3 13.9 96 15.4 15.4 100 COLD SPRINGS 9630 5.4 8.3 65 8.1 9.8 83 DEER PARK 9700 16.1 15.8 102 19.5 20.4 96 HOBBS PARK 10100 10.4 13.7 76 11.0 11.7 94 LITTLE WARM 9370 8.6 11.0 78 11.2 12.5 90 SOUTH PASS 9040 15.6 15.8 99 16.2 17.2 94 ST. LAWRENCE ALT 8620 3.8 6.8 56 6.5 8.2 79 TOGWOTEE PASS 9580 23.5 23.4 100 24.6 23.3 106 TOWNSEND CREEK 8700 6.3 8.0 79 9.0 10.6 85 ----- ----- Basin wide percent of average 88 94 BIGHORN BASIN BALD MTN. 9380 14.3 18.3 78 11.5 16.2 71 BEAR TRAP MEADOW 8200 5.6 5.0 112 7.4 7.6 97 BLACKWATER 9780 21.1 23.1 91 19.1 19.3 99 BONE SPRINGS DIV 9350 13.0 15.0 87 13.0 13.5 96 EVENING STAR 9200 23.8 28.1 85 26.3 24.1 109 GRAVE SPRINGS 8550 8.7 8.6 101 10.7 9.0 119 KIRWIN 9550 9.3 10.5 89 10.0 10.5 95 MARQUETTE 8760 2.3 8.0 29 6.6 8.9 74 MIDDLE POWDER 7760 11.1 10.6 105 9.3 11.3 82 OWL CREEK 8975 3.0 5.0 60 5.0 5.3 94 POWDER RIVER PASS 9480 9.0 10.1 89 10.5 11.5 91 SHELL CREEK 9580 12.8 13.6 94 11.9 12.4 96 SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106 SYLVAN ROAD 7120 10.3 12.4 83 15.8 16.9 93 TIMBER CREEK 7950 2.2 5.2 42 4.9 6.6 74 YOUNTS PEAK 8350 -M 16.2 * 15.7 15.3 103 ----- ----- Basin wide percent of average 84 95 SHOSHONE RIVER BLACKWATER 9780 21.1 23.1 91 19.1 19.3 99 EVENING STAR 9200 23.8 28.1 85 26.3 24.1 109 KIRWIN 9550 9.3 10.5 89 10.0 10.5 95 MARQUETTE 8760 2.3 8.0 29 6.6 8.9 74 SYLVAN LAKE 8420 17.2 21.2 81 21.1 19.9 106 SYLVAN ROAD 7120 10.3 12.4 83 15.8 16.9 93 YOUNTS PEAK 8350 -M 16.2 * 15.7 15.3 103 ----- ----- Basin wide percent of average 81 100 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.6 5.0 112 7.4 7.6 97 BIG GOOSE 7990 6.0 9.3 65 8.0 7.8 103 BONE SPRINGS DIV 9350 13.0 15.0 87 13.0 13.5 96 BURGESS JUNCTION 7880 8.9 10.5 85 10.0 11.2 89 CLOUD PEAK RESERVOIR 9860 11.8 12.0 98 10.7 11.7 91 DOME LAKE 8880 9.5 11.1 86 10.2 12.0 85 GRAVE SPRINGS 8550 8.7 8.6 101 10.7 9.0 119 HANSEN SAWMILL 8360 4.1 6.0 68 6.1 7.5 81 MIDDLE POWDER 7760 11.1 10.6 105 9.3 11.3 82 POWDER RIVER PASS 9480 9.0 10.1 89 10.5 11.5 91 SUCKER CREEK 8880 9.6 10.6 91 12.4 12.4 100 TIE CREEK 6870 4.9 5.9 83 9.2 9.1 101 ----- ----- Basin wide percent of average 89 94 BELLE FOURCHE BLIND PARK 6890 7.4 8.4 88 10.0 10.4 96 COLE CANYON 5910 5.3 5.8 91 8.8 -M * NORTH RAPID CREEK 6130 6.3 7.7 82 8.2 8.2 100 ----- ----- Basin wide percent of average 87 98 UPPER N. PLATTE RIVER COLUMBINE 9160 29.8 24.2 123 31.5 23.6 133 DIVIDE PEAK 8860 18.4 18.4 100 20.8 19.3 108 ELK RIVER 8700 19.6 18.3 107 20.0 18.3 109 JOE WRIGHT 10120 20.8 19.7 106 24.6 23.1 106 NORTH FRENCH CREEK 10130 31.5 26.7 118 30.5 23.0 133 OLD BATTLE 9920 35.5 30.1 118 39.2 32.4 121 SAGE CREEK BASIN 7850 12.8 10.7 120 13.5 11.2 121 SOUTH BRUSH CREEK 8440 12.1 12.1 100 15.7 15.2 103 TOWER 10500 49.2 42.6 115 45.9 36.0 127 WEBBER SPRINGS 9250 27.0 24.9 108 32.5 25.0 130 WILLOW CREEK PASS 9540 12.0 11.0 109 13.0 11.9 109 ----- ----- Basin wide percent of average 113 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 24.3 21.9 111 20.8 20.3 102 CASPER MTN. 7850 15.4 13.1 118 16.0 13.1 122 DEADMAN HILL 10220 15.7 15.0 105 17.1 15.6 110 DEER PARK 9700 16.1 15.8 102 19.5 20.4 96 LAPRELE CREEK 8375 10.0 10.3 97 10.7 11.6 92 RENO HILL 8500 14.7 12.7 116 15.9 13.6 117 ROACH 9700 15.7 15.9 99 16.1 17.2 94 SAND LAKE 10050 30.7 29.9 103 29.4 22.3 132 SOUTH PASS 9040 15.6 15.8 99 16.2 17.2 94 WINDY PEAK 7900 7.6 7.5 101 9.6 9.8 98 ----- ----- Basin wide percent of average 105 106 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.2 11.1 128 15.5 14.5 107 DIVIDE PEAK 8860 18.4 18.4 100 20.8 19.3 108 OLD BATTLE 9920 35.5 30.1 118 39.2 32.4 121 SANDSTONE RS 8150 15.6 14.4 108 20.5 17.6 116 WHISKEY PARK 8950 36.1 28.2 128 31.4 26.7 118 ----- ----- Basin wide percent of average 117 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.2 13.7 104 14.4 12.6 114 BLIND BULL SUM 8900 26.7 26.5 101 20.1 21.2 95 EAST RIM DIVIDE 7930 10.3 12.5 82 10.7 11.4 94 ELKHART PARK G.S. 9400 12.7 12.7 100 13.5 12.4 109 GROS VENTRE SUMMIT 8750 11.5 13.3 86 12.1 12.1 100 KENDALL R.S. 7740 14.0 14.1 99 14.6 13.8 106 LOOMIS PARK 8240 17.9 16.6 108 18.4 16.5 112 NEW FORK LAKE 8340 10.2 10.7 95 9.8 10.7 92 SNIDER BASIN 8060 17.5 13.9 126 16.4 15.3 107 SPRING CREEK DIVIDE 9000 29.4 25.1 117 -M 25.1 * TRIPLE PEAK 8500 28.7 23.7 121 29.4 23.4 126 ----- ----- Basin wide percent of average 106 107 LOWER GREEN RIVER HAMS FORK 7840 15.0 12.1 124 13.5 11.6 116 HEWINTA 9500 12.2 10.9 112 14.2 13.5 105 HICKERSON PARK 9100 4.7 6.9 68 7.2 7.3 99 HOLE-IN-ROCK 9150 6.8 6.6 103 7.5 6.8 110 INDIAN CREEK 9425 30.0 26.0 115 -M 23.9 * KELLEY R.S. 8180 19.3 16.0 121 21.2 19.3 110 STEEL CREEK PARK 10100 14.8 14.7 101 16.2 15.0 108 ----- ----- Basin wide percent of average 110 109 UPPER BEAR RIVER BUG LAKE 7950 24.3 19.7 123 21.4 18.2 118 HAYDEN FORK 9100 20.5 15.4 133 23.3 19.6 119 KELLEY R.S. 8180 19.3 16.0 121 21.2 19.3 110 LILY LAKE 9050 14.0 12.4 113 15.3 16.3 94 MONTE CRISTO 8960 32.8 28.3 116 28.9 23.9 121 SALT RIVER SUMMIT 7600 15.6 13.8 113 18.2 17.8 102 TRIAL LAKE 9960 28.0 23.7 118 24.9 23.4 106 ----- ----- Basin wide percent of average 119 111 ----------------------------------------------------------------------------- -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 1971-2000. 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.