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: APRIL 6 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.3 17.6 115 22.9 22.1 104 COTTONWOOD CREEK 7600 23.6 24.1 98 25.0 28.5 88 GRANITE CREEK 6770 14.6 18.0 81 17.4 20.5 85 GRASSY LAKE 7265 33.3 36.4 91 33.6 37.1 91 GROS VENTRE SUMMIT 8775 13.2 14.5 91 12.0 13.4 90 LEWIS LAKE DIVIDE 7860 -M 36.1 * -M 37.9 * PHILLIPS BENCH 8200 25.4 29.7 86 22.7 30.0 76 SALT RIVER SUMMIT 7600 12.4 14.5 86 14.5 19.4 75 SNAKE RIVER STATION 6920 15.2 18.6 82 21.8 23.0 95 SPRING CREEK DIVIDE 9000 26.3 27.5 96 24.1 27.4 88 THUMB DIVIDE 7980 16.4 19.0 86 16.9 19.6 86 TOGWOTEE PASS 9580 24.4 25.7 95 24.6 25.6 96 TWO OCEAN PLATEAU 9360 33.2 29.2 114 26.8 28.7 93 WILLOW CREEK 8450 30.3 31.1 97 34.5 33.5 103 ----- ----- Basin wide percent of average 94 90 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.4 24.3 109 22.8 20.8 110 BLACK BEAR 8170 -M 40.2 * -M 41.7 * CANYON 8090 14.2 13.9 102 16.3 15.9 103 FISHER CREEK 9100 37.3 36.0 104 34.4 37.6 91 MADISON PLATEAU 7750 -M 25.7 * -M 27.7 * NORTHEAST ENTRANCE 7350 11.5 11.1 104 13.5 13.1 103 PARKER PEAK 9400 25.4 22.4 113 20.6 16.9 122 SYLVAN LAKE 8420 -M 23.3 * -M 21.7 * THUMB DIVIDE 7980 16.4 19.0 86 16.9 19.6 86 TWO OCEAN PLATEAU 9360 33.2 29.2 114 26.8 28.7 93 WHISKEY CREEK 6800 12.0 17.5 69 15.1 21.7 70 WHITE MILL 8700 27.5 25.1 110 23.7 27.9 85 WOLVERINE 7650 12.2 11.4 107 12.4 13.3 93 ----- ----- Basin wide percent of average 103 94 WIND RIVER BURROUGHS CREEK 8750 18.1 14.9 121 19.2 16.9 114 COLD SPRINGS 9630 8.9 8.3 107 10.8 11.2 96 DEER PARK 9700 15.8 17.1 92 18.4 22.9 80 HOBBS PARK 10100 15.5 15.7 99 13.8 13.6 101 LITTLE WARM 9370 10.0 12.2 82 11.5 14.1 82 SOUTH PASS 9040 14.6 17.1 85 14.9 19.3 77 ST. LAWRENCE ALT 8620 7.9 7.4 107 9.2 9.4 98 TOGWOTEE PASS 9580 24.4 25.7 95 24.6 25.6 96 TOWNSEND CREEK 8700 10.7 9.2 116 12.8 12.3 104 ----- ----- Basin wide percent of average 99 93 BIGHORN BASIN BALD MTN. 9380 19.5 20.6 95 17.5 18.1 97 BEAR TRAP MEADOW 8200 6.9 5.0 138 7.8 8.7 90 BLACKWATER 9780 26.4 25.6 103 22.9 21.4 107 BONE SPRINGS DIV 9350 17.8 16.9 105 16.3 15.3 107 EVENING STAR 9200 30.8 30.8 100 32.4 26.2 124 GRAVE SPRINGS 8550 6.7 9.9 68 7.8 10.3 76 KIRWIN 9550 12.6 11.8 107 13.2 11.8 112 MARQUETTE 8760 12.9 9.6 134 13.6 10.5 130 MIDDLE POWDER 7760 8.6 12.6 68 7.4 13.0 57 OWL CREEK 8975 7.1 5.5 129 6.5 6.3 103 POWDER RIVER PASS 9480 11.0 11.3 97 12.1 13.0 93 SHELL CREEK 9580 16.2 15.3 106 14.8 14.0 106 SYLVAN LAKE 8420 -M 23.3 * -M 21.7 * SYLVAN ROAD 7120 14.5 12.6 115 18.1 18.2 99 TIMBER CREEK 7950 6.6 5.8 114 7.7 7.9 97 YOUNTS PEAK 8350 17.0 17.6 97 16.9 16.7 101 ----- ----- Basin wide percent of average 102 102 SHOSHONE RIVER BLACKWATER 9780 26.4 25.6 103 22.9 21.4 107 EVENING STAR 9200 30.8 30.8 100 32.4 26.2 124 KIRWIN 9550 12.6 11.8 107 13.2 11.8 112 MARQUETTE 8760 12.9 9.6 134 13.6 10.5 130 SYLVAN LAKE 8420 -M 23.3 * -M 21.7 * SYLVAN ROAD 7120 14.5 12.6 115 18.1 18.2 99 YOUNTS PEAK 8350 17.0 17.6 97 16.9 16.7 101 ----- ----- Basin wide percent of average 106 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.9 5.0 138 7.8 8.7 90 BIG GOOSE 7990 12.3 11.3 109 13.6 9.2 148 BONE SPRINGS DIV 9350 17.8 16.9 105 16.3 15.3 107 BURGESS JUNCTION 7880 12.6 12.2 103 13.0 12.7 102 CLOUD PEAK RESERVOIR 9860 16.6 14.1 118 14.1 13.6 104 DOME LAKE 8880 14.8 13.1 113 15.2 13.8 110 GRAVE SPRINGS 8550 6.7 9.9 68 7.8 10.3 76 HANSEN SAWMILL 8360 9.6 6.4 150 10.9 8.7 125 MIDDLE POWDER 7760 8.6 12.6 68 7.4 13.0 57 POWDER RIVER PASS 9480 11.0 11.3 97 12.1 13.0 93 SUCKER CREEK 8880 15.1 12.4 122 15.7 14.2 111 TIE CREEK 6870 8.1 5.8 140 13.3 10.5 127 ----- ----- Basin wide percent of average 107 103 BELLE FOURCHE BLIND PARK 6890 7.6 8.3 92 10.5 11.6 91 COLE CANYON 5910 3.5 -M * 6.5 -M * NORTH RAPID CREEK 6130 5.4 8.5 64 8.4 9.1 92 ----- ----- Basin wide percent of average 77 91 UPPER N. PLATTE RIVER COLUMBINE 9400 22.7 24.9 91 24.5 25.9 95 DIVIDE PEAK 8800 22.2 20.3 109 21.2 21.4 99 ELK RIVER 8700 18.1 19.6 92 19.6 20.2 97 JOE WRIGHT 10120 25.3 22.2 114 29.0 25.8 112 NORTH FRENCH CREEK 10100 32.0 30.6 105 30.2 25.6 118 OLD BATTLE 10000 -M 33.2 * -M 35.6 * SAGE CREEK BASIN 7850 10.8 11.8 92 12.7 12.4 102 SOUTH BRUSH CREEK 8400 14.1 13.2 107 17.5 17.0 103 TOWER 10500 44.5 47.1 94 33.9 39.7 85 WEBBER SPRINGS 9200 22.7 26.3 86 25.9 27.5 94 WILLOW CREEK PASS 9540 16.0 12.6 127 14.4 13.4 107 ----- ----- Basin wide percent of average 100 100 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.5 24.8 75 21.5 22.9 94 CASPER MTN. 7900 14.5 15.4 94 11.5 15.2 76 DEADMAN HILL 10220 14.7 17.1 86 18.1 17.7 102 DEER PARK 9700 15.8 17.1 92 18.4 22.9 80 LAPRELE CREEK 8320 8.2 10.7 77 10.8 13.2 82 RENO HILL 8400 12.4 14.9 83 13.4 15.9 84 ROACH 9700 17.9 17.6 102 19.9 19.3 103 SAND LAKE 10080 26.5 33.5 79 21.7 25.1 86 SOUTH PASS 9040 14.6 17.1 85 14.9 19.3 77 WINDY PEAK 7840 9.9 8.1 122 11.4 11.1 103 ----- ----- Basin wide percent of average 87 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.6 10.2 104 15.7 16.4 96 DIVIDE PEAK 8800 22.2 20.3 109 21.2 21.4 99 OLD BATTLE 10000 -M 33.2 * -M 35.6 * SANDSTONE RS 8150 13.6 14.3 95 18.9 19.3 98 WHISKEY PARK 8950 28.2 30.5 92 27.7 29.6 94 ----- ----- Basin wide percent of average 99 96 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.2 14.9 82 11.4 13.9 82 BLIND BULL SUM 8650 24.1 28.5 85 17.5 22.9 76 EAST RIM DIVIDE 7930 10.7 13.6 79 10.6 12.5 85 ELKHART PARK G.S. 9400 13.3 13.7 97 12.9 13.8 93 GROS VENTRE SUMMIT 8775 13.2 14.5 91 12.0 13.4 90 KENDALL R.S. 7740 12.9 14.2 91 13.3 15.0 89 LOOMIS PARK 8240 18.5 17.4 106 16.5 18.0 92 NEW FORK LAKE 8340 10.9 11.3 96 -M 11.7 * SNIDER BASIN 8250 13.2 14.8 89 13.7 16.7 82 SPRING CREEK DIVIDE 9000 26.3 27.5 96 24.1 27.4 88 TRIPLE PEAK 8500 25.5 25.4 100 27.1 25.7 105 ----- ----- Basin wide percent of average 92 89 LOWER GREEN RIVER HAMS FORK 7840 11.5 11.3 102 11.1 12.7 87 HEWINTA 9500 10.9 12.2 89 12.3 15.2 81 HICKERSON PARK 9150 6.2 7.9 78 8.6 8.4 102 HOLE-IN-ROCK 9150 7.9 7.2 110 9.4 7.9 119 INDIAN CREEK 9425 24.2 28.7 84 20.2 26.3 77 KELLEY R.S. 8180 13.9 17.1 81 14.9 21.1 71 STEEL CREEK PARK 10100 13.7 16.4 84 13.6 16.9 80 ----- ----- Basin wide percent of average 88 83 UPPER BEAR RIVER BUG LAKE 7950 16.7 21.4 78 16.5 20.0 82 HAYDEN FORK 9400 15.0 16.6 90 18.5 21.9 84 KELLEY R.S. 8180 13.9 17.1 81 14.9 21.1 71 LILY LAKE 9050 12.5 13.9 90 14.8 18.2 81 MONTE CRISTO 8960 16.0 30.3 53 21.2 26.5 80 SALT RIVER SUMMIT 7600 12.4 14.5 86 14.5 19.4 75 TRIAL LAKE 9960 15.3 25.7 60 17.0 25.9 66 ----- ----- Basin wide percent of average 73 77 ----------------------------------------------------------------------------- -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.