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 SUNDAY: MARCH 23 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.1 17.7 102 20.3 20.8 98 COTTONWOOD CREEK 7600 21.5 22.7 95 22.7 26.4 86 GRANITE CREEK 6770 13.9 18.2 76 15.9 19.3 82 GRASSY LAKE 7265 29.7 34.4 86 29.3 34.8 84 GROS VENTRE SUMMIT 8775 11.1 13.6 82 10.5 12.4 85 LEWIS LAKE DIVIDE 7860 31.4 34.2 92 27.8 35.5 78 PHILLIPS BENCH 8200 22.3 27.8 80 20.0 28.0 71 SALT RIVER SUMMIT 7600 11.4 14.0 81 13.4 18.1 74 SNAKE RIVER STATION 6920 13.8 18.7 74 19.3 21.6 89 SPRING CREEK DIVIDE 9000 24.1 25.6 94 22.1 25.6 86 THUMB DIVIDE 7980 13.9 18.2 76 14.1 18.2 77 TOGWOTEE PASS 9580 22.0 23.9 92 22.1 23.7 93 TWO OCEAN PLATEAU 9360 28.4 26.9 106 23.5 26.7 88 WILLOW CREEK 8450 27.2 29.2 93 30.9 31.0 100 ----- ----- Basin wide percent of average 89 85 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.5 22.7 108 21.1 19.4 109 BLACK BEAR 8170 30.1 38.0 79 27.9 38.7 72 CANYON 8090 12.5 13.3 94 13.4 14.8 91 FISHER CREEK 9100 33.5 33.8 99 30.6 35.0 87 MADISON PLATEAU 7750 17.3 24.3 71 17.5 25.6 68 NORTHEAST ENTRANCE 7350 10.2 10.9 94 12.1 12.2 99 PARKER PEAK 9400 22.3 20.8 107 18.4 15.6 118 SYLVAN LAKE 8420 19.0 21.6 88 21.1 20.2 104 THUMB DIVIDE 7980 13.9 18.2 76 14.1 18.2 77 TWO OCEAN PLATEAU 9360 28.4 26.9 106 23.5 26.7 88 WHISKEY CREEK 6800 10.9 16.6 66 13.4 20.1 67 WHITE MILL 8700 24.7 23.4 106 21.2 26.0 82 WOLVERINE 7650 12.2 11.4 107 11.6 12.4 94 ----- ----- Basin wide percent of average 92 86 WIND RIVER BURROUGHS CREEK 8750 16.2 14.1 115 17.4 15.6 112 COLD SPRINGS 9630 8.5 8.5 100 10.0 10.0 100 DEER PARK 9700 13.1 16.1 81 15.6 20.9 75 HOBBS PARK 10100 13.0 14.0 93 11.7 12.0 98 LITTLE WARM 9370 9.3 11.3 82 10.4 12.7 82 SOUTH PASS 9040 12.9 16.0 81 13.1 17.6 74 ST. LAWRENCE ALT 8620 7.2 7.0 103 8.1 8.3 98 TOGWOTEE PASS 9580 22.0 23.9 92 22.1 23.7 93 TOWNSEND CREEK 8700 9.4 8.2 115 10.7 10.9 98 ----- ----- Basin wide percent of average 94 90 BIGHORN BASIN BALD MTN. 9380 18.1 18.7 97 16.4 16.5 99 BEAR TRAP MEADOW 8200 6.4 5.0 128 6.6 7.7 86 BLACKWATER 9780 23.1 23.5 98 20.1 19.7 102 BONE SPRINGS DIV 9350 15.5 15.3 101 14.4 13.8 104 EVENING STAR 9200 27.8 28.6 97 29.2 24.4 120 GRAVE SPRINGS 8550 5.4 8.8 61 6.0 9.1 66 KIRWIN 9550 10.6 10.8 98 11.5 10.7 107 MARQUETTE 8760 10.5 8.3 127 11.2 9.1 123 MIDDLE POWDER 7760 7.8 10.9 72 6.6 11.6 57 OWL CREEK 8975 6.6 5.1 129 5.9 5.5 107 POWDER RIVER PASS 9480 9.9 10.3 96 11.0 11.7 94 SHELL CREEK 9580 14.8 13.9 106 13.3 12.6 106 SYLVAN LAKE 8420 19.0 21.6 88 21.1 20.2 104 SYLVAN ROAD 7120 12.7 12.5 102 16.2 17.2 94 TIMBER CREEK 7950 5.6 5.3 106 6.6 6.8 97 YOUNTS PEAK 8350 16.0 16.5 97 15.6 15.5 101 ----- ----- Basin wide percent of average 98 100 SHOSHONE RIVER BLACKWATER 9780 23.1 23.5 98 20.1 19.7 102 EVENING STAR 9200 27.8 28.6 97 29.2 24.4 120 KIRWIN 9550 10.6 10.8 98 11.5 10.7 107 MARQUETTE 8760 10.5 8.3 127 11.2 9.1 123 SYLVAN LAKE 8420 19.0 21.6 88 21.1 20.2 104 SYLVAN ROAD 7120 12.7 12.5 102 16.2 17.2 94 YOUNTS PEAK 8350 16.0 16.5 97 15.6 15.5 101 ----- ----- Basin wide percent of average 98 107 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.4 5.0 128 6.6 7.7 86 BIG GOOSE 7990 11.0 9.6 115 11.9 8.0 149 BONE SPRINGS DIV 9350 15.5 15.3 101 14.4 13.8 104 BURGESS JUNCTION 7880 11.2 10.8 104 11.5 11.4 101 CLOUD PEAK RESERVOIR 9860 14.3 12.4 115 11.9 12.0 99 DOME LAKE 8880 12.8 11.5 111 13.0 12.3 106 GRAVE SPRINGS 8550 5.4 8.8 61 6.0 9.1 66 HANSEN SAWMILL 8360 8.2 6.1 134 8.8 7.6 116 MIDDLE POWDER 7760 7.8 10.9 72 6.6 11.6 57 POWDER RIVER PASS 9480 9.9 10.3 96 11.0 11.7 94 SUCKER CREEK 8880 13.3 10.9 122 13.9 12.7 109 TIE CREEK 6870 7.5 5.9 127 11.5 9.3 124 ----- ----- Basin wide percent of average 105 100 BELLE FOURCHE BLIND PARK 6890 8.3 8.5 98 9.8 10.6 92 COLE CANYON 5910 5.1 -M * 6.3 -M * NORTH RAPID CREEK 6130 6.8 7.9 86 8.1 8.3 98 ----- ----- Basin wide percent of average 92 95 UPPER N. PLATTE RIVER COLUMBINE 9400 21.4 24.4 88 22.4 24.0 93 DIVIDE PEAK 8800 19.7 18.8 105 19.4 19.7 98 ELK RIVER 8700 16.5 18.6 89 17.2 18.7 92 JOE WRIGHT 10120 22.2 20.2 110 26.5 23.5 113 NORTH FRENCH CREEK 10100 27.4 27.4 100 25.0 23.5 106 OLD BATTLE 10000 26.6 30.7 87 30.3 33.0 92 SAGE CREEK BASIN 7850 11.1 10.9 102 11.6 11.5 101 SOUTH BRUSH CREEK 8400 12.4 12.4 100 15.2 15.5 98 TOWER 10500 39.6 43.4 91 33.7 36.7 92 WEBBER SPRINGS 9200 20.7 25.3 82 23.2 25.4 91 WILLOW CREEK PASS 9540 14.7 11.3 130 13.5 12.2 111 ----- ----- Basin wide percent of average 95 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.1 22.4 72 19.2 20.8 92 CASPER MTN. 7900 13.3 13.5 99 10.2 13.4 76 DEADMAN HILL 10220 12.9 15.3 84 16.2 15.9 102 DEER PARK 9700 13.1 16.1 81 15.6 20.9 75 LAPRELE CREEK 8320 7.3 10.5 70 9.3 11.8 79 RENO HILL 8400 11.6 13.1 89 11.8 14.0 84 ROACH 9700 16.7 16.2 103 18.2 17.6 103 SAND LAKE 10080 22.5 30.6 74 22.6 22.8 99 SOUTH PASS 9040 12.9 16.0 81 13.1 17.6 74 WINDY PEAK 7840 9.1 7.6 120 9.7 10.0 97 ----- ----- Basin wide percent of average 84 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.2 11.1 110 14.4 14.9 97 DIVIDE PEAK 8800 19.7 18.8 105 19.4 19.7 98 OLD BATTLE 10000 26.6 30.7 87 30.3 33.0 92 SANDSTONE RS 8150 12.3 14.5 85 16.9 17.9 94 WHISKEY PARK 8950 25.6 28.8 89 24.8 27.2 91 ----- ----- Basin wide percent of average 93 94 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.0 14.0 79 10.2 12.9 79 BLIND BULL SUM 8650 21.0 26.9 78 15.7 21.5 73 EAST RIM DIVIDE 7930 9.5 12.7 75 9.4 11.6 81 ELKHART PARK G.S. 9400 -M 12.9 * -M 12.7 * GROS VENTRE SUMMIT 8775 11.1 13.6 82 10.5 12.4 85 KENDALL R.S. 7740 12.2 14.2 86 12.4 14.1 88 LOOMIS PARK 8240 16.5 16.8 98 14.8 16.8 88 NEW FORK LAKE 8340 9.9 10.9 91 -M 10.9 * SNIDER BASIN 8250 12.7 14.1 90 12.4 15.5 80 SPRING CREEK DIVIDE 9000 24.1 25.6 94 22.1 25.6 86 TRIPLE PEAK 8500 23.1 24.1 96 24.4 23.8 103 ----- ----- Basin wide percent of average 87 86 LOWER GREEN RIVER HAMS FORK 7840 10.7 12.1 88 10.2 11.7 87 HEWINTA 9500 9.4 11.2 84 10.6 13.8 77 HICKERSON PARK 9150 6.5 7.1 92 7.6 7.5 101 HOLE-IN-ROCK 9150 7.6 6.8 112 8.3 7.0 119 INDIAN CREEK 9425 21.9 26.6 82 18.5 24.4 76 KELLEY R.S. 8180 12.8 16.3 79 13.6 19.6 69 STEEL CREEK PARK 10100 11.5 15.0 77 11.9 15.3 78 ----- ----- Basin wide percent of average 85 81 UPPER BEAR RIVER BUG LAKE 7950 14.3 20.1 71 14.4 18.5 78 HAYDEN FORK 9400 13.2 15.7 84 16.2 20.0 81 KELLEY R.S. 8180 12.8 16.3 79 13.6 19.6 69 LILY LAKE 9050 11.4 12.7 90 12.6 16.6 76 MONTE CRISTO 8960 14.7 28.8 51 19.2 24.4 79 SALT RIVER SUMMIT 7600 11.4 14.0 81 13.4 18.1 74 TRIAL LAKE 9960 12.7 24.1 53 14.4 23.8 61 ----- ----- Basin wide percent of average 69 74 ----------------------------------------------------------------------------- -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.