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 27 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.9 17.9 117 22.5 21.2 106 COTTONWOOD CREEK 7600 23.3 23.4 100 24.3 27.0 90 GRANITE CREEK 6770 15.2 18.4 83 17.3 19.7 88 GRASSY LAKE 7265 32.6 35.1 93 32.2 35.5 91 GROS VENTRE SUMMIT 8775 12.2 14.0 87 11.2 12.6 89 LEWIS LAKE DIVIDE 7860 34.4 34.9 99 30.1 36.3 83 PHILLIPS BENCH 8200 25.1 28.4 88 22.3 28.6 78 SALT RIVER SUMMIT 7600 12.1 14.2 85 14.1 18.5 76 SNAKE RIVER STATION 6920 15.1 18.9 80 20.9 22.0 95 SPRING CREEK DIVIDE 9000 25.6 26.2 98 23.3 26.1 89 THUMB DIVIDE 7980 16.1 18.7 86 16.0 18.6 86 TOGWOTEE PASS 9580 23.6 24.5 96 23.4 24.2 97 TWO OCEAN PLATEAU 9360 31.9 27.6 116 25.8 27.3 95 WILLOW CREEK 8450 29.6 29.8 99 33.2 31.7 105 ----- ----- Basin wide percent of average 96 91 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.8 23.1 112 22.6 19.8 114 BLACK BEAR 8170 31.3 38.8 81 29.1 39.7 73 CANYON 8090 13.7 13.5 101 14.2 15.2 93 FISHER CREEK 9100 36.0 34.5 104 33.0 35.8 92 MADISON PLATEAU 7750 18.5 24.8 75 18.5 26.3 70 NORTHEAST ENTRANCE 7350 11.1 11.1 100 13.1 12.5 105 PARKER PEAK 9400 -M 21.3 * 19.7 16.0 123 SYLVAN LAKE 8420 20.6 22.2 93 22.8 20.6 111 THUMB DIVIDE 7980 16.1 18.7 86 16.0 18.6 86 TWO OCEAN PLATEAU 9360 31.9 27.6 116 25.8 27.3 95 WHISKEY CREEK 6800 11.4 17.0 67 14.1 20.6 68 WHITE MILL 8700 26.6 23.9 111 22.6 26.6 85 WOLVERINE 7650 12.8 11.5 111 11.9 12.6 94 ----- ----- Basin wide percent of average 96 90 WIND RIVER BURROUGHS CREEK 8750 17.8 14.4 124 18.9 16.0 118 COLD SPRINGS 9630 8.8 8.7 101 10.3 10.3 100 DEER PARK 9700 13.9 16.6 84 16.4 21.4 77 HOBBS PARK 10100 13.5 14.5 93 11.8 12.4 95 LITTLE WARM 9370 9.9 11.6 85 11.1 13.1 85 SOUTH PASS 9040 13.4 16.3 82 13.4 18.0 74 ST. LAWRENCE ALT 8620 7.2 7.2 100 8.2 8.6 95 TOGWOTEE PASS 9580 23.6 24.5 96 23.4 24.2 97 TOWNSEND CREEK 8700 9.3 8.4 111 10.9 11.2 97 ----- ----- Basin wide percent of average 96 92 BIGHORN BASIN BALD MTN. 9380 18.9 19.2 98 17.0 17.0 100 BEAR TRAP MEADOW 8200 6.9 5.1 135 7.0 8.0 88 BLACKWATER 9780 25.4 24.1 105 21.8 20.1 108 BONE SPRINGS DIV 9350 16.7 15.8 106 15.2 14.2 107 EVENING STAR 9200 29.5 29.3 101 31.1 24.9 125 GRAVE SPRINGS 8550 6.1 9.0 68 6.7 9.4 71 KIRWIN 9550 11.9 11.1 107 12.3 11.0 112 MARQUETTE 8760 12.3 8.6 143 12.7 9.4 135 MIDDLE POWDER 7760 8.1 11.3 72 6.7 11.9 56 OWL CREEK 8975 6.9 5.3 130 6.2 5.7 109 POWDER RIVER PASS 9480 10.5 10.5 100 11.5 12.0 96 SHELL CREEK 9580 15.4 14.3 108 13.9 13.0 107 SYLVAN LAKE 8420 20.6 22.2 93 22.8 20.6 111 SYLVAN ROAD 7120 14.0 12.7 110 17.4 17.4 100 TIMBER CREEK 7950 6.2 5.5 113 7.3 7.1 103 YOUNTS PEAK 8350 16.9 16.8 101 16.5 15.9 104 ----- ----- Basin wide percent of average 102 104 SHOSHONE RIVER BLACKWATER 9780 25.4 24.1 105 21.8 20.1 108 EVENING STAR 9200 29.5 29.3 101 31.1 24.9 125 KIRWIN 9550 11.9 11.1 107 12.3 11.0 112 MARQUETTE 8760 12.3 8.6 143 12.7 9.4 135 SYLVAN LAKE 8420 20.6 22.2 93 22.8 20.6 111 SYLVAN ROAD 7120 14.0 12.7 110 17.4 17.4 100 YOUNTS PEAK 8350 16.9 16.8 101 16.5 15.9 104 ----- ----- Basin wide percent of average 105 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.9 5.1 135 7.0 8.0 88 BIG GOOSE 7990 12.0 10.1 119 12.9 8.2 157 BONE SPRINGS DIV 9350 16.7 15.8 106 15.2 14.2 107 BURGESS JUNCTION 7880 12.1 11.2 108 12.4 11.8 105 CLOUD PEAK RESERVOIR 9860 15.8 12.9 122 13.3 12.4 107 DOME LAKE 8880 14.0 12.0 117 14.1 12.7 111 GRAVE SPRINGS 8550 6.1 9.0 68 6.7 9.4 71 HANSEN SAWMILL 8360 -M 6.3 * 10.2 7.9 129 MIDDLE POWDER 7760 8.1 11.3 72 6.7 11.9 56 POWDER RIVER PASS 9480 10.5 10.5 100 11.5 12.0 96 SUCKER CREEK 8880 14.3 11.3 127 14.8 13.1 113 TIE CREEK 6870 -M 6.0 * 11.8 9.6 123 ----- ----- Basin wide percent of average 107 104 BELLE FOURCHE BLIND PARK 6890 8.2 8.6 95 9.8 10.8 91 COLE CANYON 5910 4.5 -M * 6.3 -M * NORTH RAPID CREEK 6130 6.5 8.1 80 8.0 8.4 95 ----- ----- Basin wide percent of average 88 93 UPPER N. PLATTE RIVER COLUMBINE 9400 22.0 24.6 89 23.1 24.6 94 DIVIDE PEAK 8800 21.1 19.3 109 20.3 20.2 100 ELK RIVER 8700 17.3 19.0 91 18.2 19.1 95 JOE WRIGHT 10120 23.6 20.8 113 27.8 24.1 115 NORTH FRENCH CREEK 10100 29.9 28.3 106 27.0 24.1 112 OLD BATTLE 10000 -M 31.5 * -M 33.8 * SAGE CREEK BASIN 7850 11.2 11.2 100 12.0 11.7 103 SOUTH BRUSH CREEK 8400 13.5 12.7 106 16.4 15.9 103 TOWER 10500 42.0 44.4 95 33.7 37.5 90 WEBBER SPRINGS 9200 21.8 25.8 84 24.3 26.0 93 WILLOW CREEK PASS 9540 15.5 11.7 132 14.0 12.5 112 ----- ----- Basin wide percent of average 100 101 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.6 23.0 77 20.5 21.4 96 CASPER MTN. 7900 13.7 14.0 98 10.7 13.9 77 DEADMAN HILL 10220 13.6 15.8 86 17.1 16.4 104 DEER PARK 9700 13.9 16.6 84 16.4 21.4 77 LAPRELE CREEK 8320 8.2 10.7 77 10.2 12.2 84 RENO HILL 8400 12.2 13.6 90 12.5 14.4 87 ROACH 9700 17.5 16.6 105 19.1 18.1 106 SAND LAKE 10080 24.7 31.5 78 24.6 23.4 105 SOUTH PASS 9040 13.4 16.3 82 13.4 18.0 74 WINDY PEAK 7840 9.7 7.8 124 10.6 10.3 103 ----- ----- Basin wide percent of average 87 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.6 11.1 105 15.0 15.3 98 DIVIDE PEAK 8800 21.1 19.3 109 20.3 20.2 100 OLD BATTLE 10000 -M 31.5 * -M 33.8 * SANDSTONE RS 8150 13.1 14.6 90 17.8 18.3 97 WHISKEY PARK 8950 26.5 29.5 90 26.0 27.9 93 ----- ----- Basin wide percent of average 97 97 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.0 14.3 84 11.0 13.1 84 BLIND BULL SUM 8650 23.4 27.5 85 17.2 22.0 78 EAST RIM DIVIDE 7930 10.4 12.9 81 10.3 11.9 87 ELKHART PARK G.S. 9400 13.3 13.2 101 12.5 13.0 96 GROS VENTRE SUMMIT 8775 12.2 14.0 87 11.2 12.6 89 KENDALL R.S. 7740 13.0 14.4 90 13.2 14.3 92 LOOMIS PARK 8240 18.1 17.1 106 16.1 17.1 94 NEW FORK LAKE 8340 10.7 11.1 96 -M 11.1 * SNIDER BASIN 8250 13.6 14.4 94 13.3 15.9 84 SPRING CREEK DIVIDE 9000 25.6 26.2 98 23.3 26.1 89 TRIPLE PEAK 8500 25.4 24.6 103 26.3 24.4 108 ----- ----- Basin wide percent of average 94 91 LOWER GREEN RIVER HAMS FORK 7840 11.6 12.1 96 10.9 12.0 91 HEWINTA 9500 9.7 11.6 84 11.0 14.2 77 HICKERSON PARK 9150 6.6 7.3 90 7.8 7.7 101 HOLE-IN-ROCK 9150 7.4 7.0 106 8.4 7.2 117 INDIAN CREEK 9425 23.6 27.3 86 19.6 25.0 78 KELLEY R.S. 8180 13.7 16.7 82 14.5 20.1 72 STEEL CREEK PARK 10100 12.2 15.4 79 12.4 15.8 78 ----- ----- Basin wide percent of average 87 83 UPPER BEAR RIVER BUG LAKE 7950 15.8 20.6 77 15.6 19.0 82 HAYDEN FORK 9400 13.9 16.1 86 16.7 20.5 81 KELLEY R.S. 8180 13.7 16.7 82 14.5 20.1 72 LILY LAKE 9050 11.6 13.0 89 13.4 17.1 78 MONTE CRISTO 8960 15.6 29.4 53 20.1 25.0 80 SALT RIVER SUMMIT 7600 12.1 14.2 85 14.1 18.5 76 TRIAL LAKE 9960 13.8 24.6 56 15.3 24.4 63 ----- ----- Basin wide percent of average 72 76 ----------------------------------------------------------------------------- -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.