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 WEDNESDAY: MARCH 25 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.1 17.3 93 19.3 22.2 87 COTTONWOOD CREEK 7600 -M 23.3 * -M 24.9 * GRANITE CREEK 6770 16.3 18.1 90 19.5 23.3 84 GRASSY LAKE 7265 30.0 34.9 86 31.7 36.8 86 GROS VENTRE SUMMIT 8775 -M 15.2 * -M 15.8 * LEWIS LAKE DIVIDE 7860 -M 34.5 * -M 37.4 * PHILLIPS BENCH 8200 25.7 28.4 90 25.5 29.6 86 SALT RIVER SUMMIT 7600 14.3 14.0 102 16.7 16.8 99 SNAKE RIVER STATION 6920 16.2 18.3 89 19.8 25.8 77 SPRING CREEK DIVIDE 9000 21.7 27.3 79 20.6 27.2 76 THUMB DIVIDE 7980 14.7 16.6 89 16.2 20.7 78 TOGWOTEE PASS 9580 24.2 24.3 100 22.6 28.0 81 TWO OCEAN PLATEAU 9360 25.9 25.9 100 24.9 30.6 81 WILLOW CREEK 8450 25.2 29.6 85 29.0 31.9 91 ----- ----- Basin wide percent of average 90 84 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.1 23.0 79 15.8 17.5 90 BLACK BEAR 7950 -M 37.1 * -M 39.6 * CANYON 7940 11.8 12.6 94 13.7 13.9 99 FISHER CREEK 9100 29.3 34.9 84 26.1 35.7 73 MADISON PLATEAU 7750 -M 23.9 * -M 25.6 * NORTHEAST ENTRANCE 7350 6.6 9.0 73 11.4 11.5 99 PARKER PEAK 9400 17.1 21.1 81 15.1 15.1 100 SYLVAN LAKE 8420 16.5 21.5 77 19.1 18.6 103 THUMB DIVIDE 7980 14.7 16.6 89 16.2 20.7 78 TWO OCEAN PLATEAU 9360 25.9 25.9 100 24.9 30.6 81 WHISKEY CREEK 6800 13.0 16.9 77 17.3 21.3 81 WHITE MILL 8700 21.8 24.4 89 20.0 27.6 72 WOLVERINE 7650 9.1 11.4 80 9.5 12.4 77 ----- ----- Basin wide percent of average 85 84 WIND RIVER BURROUGHS CREEK 8750 13.6 14.7 93 15.3 16.1 95 COLD SPRINGS 9630 9.1 8.1 112 9.9 10.1 98 DEER PARK 9700 -M -M * 18.9 -M * HOBBS PARK 10100 13.0 14.4 90 11.6 13.5 86 LITTLE WARM 9620 10.0 11.1 90 12.0 12.7 94 SOUTH PASS 9040 13.9 15.9 87 15.6 16.4 95 ST. LAWRENCE ALT 8620 8.5 7.4 115 8.7 9.7 90 TOGWOTEE PASS 9580 24.2 24.3 100 22.6 28.0 81 TOWNSEND CREEK 8700 10.4 9.5 109 12.2 11.9 103 ----- ----- Basin wide percent of average 97 91 BIGHORN BASIN BALD MTN. 9375 18.1 19.8 91 15.9 16.7 95 BEAR TRAP MEADOW 7900 5.9 6.9 86 6.9 7.8 88 BLACKWATER 9780 19.4 21.5 90 17.1 17.4 98 BONE SPRINGS DIV 9350 14.8 15.8 94 14.7 14.3 103 EVENING STAR 9200 21.7 26.2 83 23.5 21.9 107 GRAVE SPRINGS 8550 8.3 -M * 8.8 9.1 97 KIRWIN 9550 11.6 9.6 121 12.6 10.3 122 MARQUETTE 8760 12.2 7.8 156 12.4 9.0 138 MIDDLE POWDER 7760 9.5 11.7 81 9.2 11.2 82 OWL CREEK 8975 6.6 4.4 150 6.3 5.9 107 POWDER RIVER PASS 9480 9.9 10.5 94 10.9 11.0 99 SHELL CREEK 9580 13.1 14.5 90 10.0 12.5 80 SYLVAN LAKE 8420 16.5 21.5 77 19.1 18.6 103 SYLVAN ROAD 8120 9.6 12.4 77 13.5 15.6 87 TIMBER CREEK 7950 7.4 6.0 123 9.2 6.6 139 YOUNTS PEAK 8350 13.9 16.8 83 14.1 16.1 88 ----- ----- Basin wide percent of average 93 100 SHOSHONE RIVER BLACKWATER 9780 19.4 21.5 90 17.1 17.4 98 EVENING STAR 9200 21.7 26.2 83 23.5 21.9 107 KIRWIN 9550 11.6 9.6 121 12.6 10.3 122 MARQUETTE 8760 12.2 7.8 156 12.4 9.0 138 SYLVAN LAKE 8420 16.5 21.5 77 19.1 18.6 103 SYLVAN ROAD 8120 9.6 12.4 77 13.5 15.6 87 YOUNTS PEAK 8350 13.9 16.8 83 14.1 16.1 88 ----- ----- Basin wide percent of average 91 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.9 6.9 86 6.9 7.8 88 BONE SPRINGS DIV 9350 14.8 15.8 94 14.7 14.3 103 BURGESS JUNCTION 7880 10.1 11.3 89 11.2 10.8 104 CLOUD PEAK RESERVOIR 9860 13.2 14.1 94 13.3 12.6 106 DOME LAKE 8880 10.3 13.3 77 12.2 12.6 97 GRAVE SPRINGS 8550 8.3 -M * 8.8 9.1 97 HANSEN SAWMILL 8760 7.1 6.9 103 8.3 7.5 111 MIDDLE POWDER 7760 9.5 11.7 81 9.2 11.2 82 POWDER RIVER PASS 9480 9.9 10.5 94 10.9 11.0 99 SUCKER CREEK 8880 11.3 11.7 97 13.0 12.5 104 TIE CREEK 6870 -M -M * -M 10.4 * ----- ----- Basin wide percent of average 90 99 BELLE FOURCHE BLIND PARK 6890 8.2 10.7 77 11.9 9.5 125 NORTH RAPID CREEK 6130 8.8 -M * 9.6 -M * WARREN PEAK 6520 11.5 10.7 107 9.9 7.6 130 ----- ----- Basin wide percent of average 92 127 UPPER N. PLATTE RIVER COLUMBINE 9400 20.9 24.3 86 21.4 23.6 91 DIVIDE PEAK 8800 18.6 20.2 92 18.7 21.9 85 ELK RIVER 8700 15.3 19.3 79 16.6 18.4 90 JOE WRIGHT 10120 -M 21.1 * 21.3 23.9 89 NORTH FRENCH CREEK 10100 29.3 24.5 120 27.2 22.5 121 OLD BATTLE 10000 28.7 30.8 93 32.3 28.9 112 SOUTH BRUSH CREEK 8400 9.5 12.5 76 11.8 15.5 76 TOWER 10500 -M 43.7 * 36.6 34.8 105 WEBBER SPRINGS 9200 18.5 26.9 69 23.6 24.2 98 WILLOW CREEK PASS 9540 6.0 11.4 53 7.2 12.0 60 ----- ----- Basin wide percent of average 86 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.8 24.8 84 20.1 18.5 109 CASPER MTN. 7900 11.8 15.5 76 11.6 13.3 87 DEADMAN HILL 10220 13.7 15.9 86 12.8 15.9 81 DEER PARK 9700 -M -M * 18.9 -M * LAPRELE CREEK 8320 8.3 10.1 82 10.3 11.2 92 RENO HILL 8400 11.2 13.5 83 10.8 18.2 59 ROACH 9700 13.2 16.7 79 15.3 20.2 76 SAND LAKE 10080 24.8 31.7 78 22.1 19.4 114 SOUTH PASS 9040 13.9 15.9 87 15.6 16.4 95 WINDY PEAK 7840 6.6 8.3 80 8.1 9.0 90 ----- ----- Basin wide percent of average 82 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.1 11.1 109 14.8 14.7 101 DIVIDE PEAK 8800 18.6 20.2 92 18.7 21.9 85 OLD BATTLE 10000 28.7 30.8 93 32.3 28.9 112 SANDSTONE RS 8150 13.7 14.4 95 17.9 17.9 100 WHISKEY PARK 8950 26.3 27.9 94 25.5 26.9 95 ----- ----- Basin wide percent of average 95 99 UPPER GREEN RIVER BIG SANDY OPENING 9100 11.2 14.2 79 10.3 16.1 64 BLIND BULL SUM 8650 22.2 28.7 77 17.0 23.8 71 EAST RIM DIVIDE 7930 10.4 13.7 76 10.4 15.1 69 ELKHART PARK G.S. 9400 11.6 13.4 87 11.9 15.8 75 GROS VENTRE SUMMIT 8775 -M 15.2 * -M 15.8 * KENDALL R.S. 7740 12.8 14.6 88 13.1 15.4 85 LOOMIS PARK 8240 12.5 17.1 73 14.8 18.7 79 NEW FORK LAKE 8340 9.7 11.1 87 9.6 14.4 67 SNIDER BASIN 8250 10.9 14.5 75 11.5 15.1 76 SPRING CREEK DIVIDE 9000 21.7 27.3 79 20.6 27.2 76 TRIPLE PEAK 8500 19.7 25.0 79 20.5 30.8 67 ----- ----- Basin wide percent of average 79 73 LOWER GREEN RIVER HAMS FORK 7840 9.9 12.1 82 10.2 13.3 77 HEWINTA 9500 9.3 10.9 85 13.5 12.4 109 HICKERSON PARK 9150 10.0 6.4 156 11.4 9.0 127 HOLE-IN-ROCK 9150 6.9 6.1 113 10.0 9.0 111 INDIAN CREEK 9425 23.2 27.8 83 17.9 25.7 70 KELLEY R.S. 8180 14.8 16.7 89 15.3 18.7 82 STEEL CREEK PARK 10100 14.0 15.7 89 16.7 12.2 137 ----- ----- Basin wide percent of average 92 95 UPPER BEAR RIVER BUG LAKE 7950 18.9 20.3 93 20.1 18.8 107 HAYDEN FORK 9400 11.1 16.0 69 18.4 18.2 101 KELLEY R.S. 8180 14.8 16.7 89 15.3 18.7 82 LILY LAKE 9050 12.9 12.7 102 15.6 14.1 111 MONTE CRISTO 8960 -M 28.5 * -M 24.6 * SALT RIVER SUMMIT 7600 14.3 14.0 102 16.7 16.8 99 TRIAL LAKE 9960 18.9 24.5 77 20.4 23.0 89 ----- ----- Basin wide percent of average 87 97 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. 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.