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 SATURDAY: APRIL 4 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.8 17.4 91 20.5 23.0 89 COTTONWOOD CREEK 7600 21.1 24.2 87 24.0 26.0 92 GRANITE CREEK 6770 16.7 18.6 90 21.1 24.3 87 GRASSY LAKE 7265 31.0 36.6 85 33.8 38.5 88 GROS VENTRE SUMMIT 8775 12.1 15.8 77 13.1 16.5 79 LEWIS LAKE DIVIDE 7860 30.7 35.9 86 32.2 39.1 82 PHILLIPS BENCH 8200 26.8 29.7 90 26.5 30.9 86 SALT RIVER SUMMIT 7600 15.3 14.4 106 18.6 17.5 106 SNAKE RIVER STATION 6920 16.7 18.8 89 21.4 27.0 79 SPRING CREEK DIVIDE 9000 21.7 28.5 76 22.1 28.4 78 THUMB DIVIDE 7980 16.1 17.2 94 17.5 21.5 81 TOGWOTEE PASS 9580 25.6 25.6 100 24.2 29.3 83 TWO OCEAN PLATEAU 9360 27.8 26.8 104 27.1 31.7 85 WILLOW CREEK 8450 28.2 30.8 92 32.2 33.2 97 ----- ----- Basin wide percent of average 90 86 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 19.6 24.2 81 16.9 18.5 91 BLACK BEAR 7950 39.3 38.9 101 36.3 41.8 87 CANYON 7940 12.7 13.2 96 14.8 14.6 101 FISHER CREEK 9100 30.8 36.5 84 28.4 37.6 76 MADISON PLATEAU 7750 21.2 25.0 85 23.0 27.0 85 NORTHEAST ENTRANCE 7350 6.5 9.2 71 12.0 12.1 99 PARKER PEAK 9400 19.1 22.1 86 16.5 16.0 103 SYLVAN LAKE 8420 18.0 22.6 80 20.7 19.6 106 THUMB DIVIDE 7980 16.1 17.2 94 17.5 21.5 81 TWO OCEAN PLATEAU 9360 27.8 26.8 104 27.1 31.7 85 WHISKEY CREEK 6800 14.4 17.7 81 18.9 22.5 84 WHITE MILL 8700 23.4 25.3 92 21.5 29.1 74 WOLVERINE 7650 9.4 11.7 80 10.3 13.0 79 ----- ----- Basin wide percent of average 89 87 WIND RIVER BURROUGHS CREEK 8750 15.4 15.1 102 16.8 17.0 99 COLD SPRINGS 9630 11.3 8.5 133 12.4 10.9 114 DEER PARK 9700 -M -M * 21.1 -M * HOBBS PARK 10100 15.9 15.4 103 14.3 14.5 99 LITTLE WARM 9620 11.4 12.0 95 13.6 13.6 100 SOUTH PASS 9040 15.9 16.7 95 17.9 17.5 102 ST. LAWRENCE ALT 8620 -M 7.5 * 10.6 10.4 102 TOGWOTEE PASS 9580 25.6 25.6 100 24.2 29.3 83 TOWNSEND CREEK 8700 12.0 10.0 120 14.4 12.8 112 ----- ----- Basin wide percent of average 104 99 BIGHORN BASIN BALD MTN. 9375 19.2 20.9 92 16.7 17.7 94 BEAR TRAP MEADOW 7900 6.4 7.1 90 7.7 8.4 92 BLACKWATER 9780 20.8 22.9 91 18.5 18.4 101 BONE SPRINGS DIV 9350 16.7 16.8 99 15.9 15.4 103 EVENING STAR 9200 23.2 27.6 84 25.0 23.0 109 GRAVE SPRINGS 8550 9.2 -M * 10.1 9.9 102 KIRWIN 9550 12.9 10.2 126 14.0 11.1 126 MARQUETTE 8760 13.2 8.2 161 13.5 9.9 136 MIDDLE POWDER 7760 10.9 12.5 87 10.6 12.1 88 OWL CREEK 8975 7.8 4.6 170 7.1 6.4 111 POWDER RIVER PASS 9480 11.0 11.1 99 12.0 11.8 102 SHELL CREEK 9580 14.0 15.3 92 10.7 13.4 80 SYLVAN LAKE 8420 18.0 22.6 80 20.7 19.6 106 SYLVAN ROAD 8120 10.4 12.1 86 14.6 16.4 89 TIMBER CREEK 7950 8.9 6.4 139 10.7 7.3 147 YOUNTS PEAK 8350 14.8 17.5 85 15.0 17.0 88 ----- ----- Basin wide percent of average 96 102 SHOSHONE RIVER BLACKWATER 9780 20.8 22.9 91 18.5 18.4 101 EVENING STAR 9200 23.2 27.6 84 25.0 23.0 109 KIRWIN 9550 12.9 10.2 126 14.0 11.1 126 MARQUETTE 8760 13.2 8.2 161 13.5 9.9 136 SYLVAN LAKE 8420 18.0 22.6 80 20.7 19.6 106 SYLVAN ROAD 8120 10.4 12.1 86 14.6 16.4 89 YOUNTS PEAK 8350 14.8 17.5 85 15.0 17.0 88 ----- ----- Basin wide percent of average 94 105 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.4 7.1 90 7.7 8.4 92 BONE SPRINGS DIV 9350 16.7 16.8 99 15.9 15.4 103 BURGESS JUNCTION 7880 10.6 12.0 88 11.8 11.8 100 CLOUD PEAK RESERVOIR 9860 14.5 15.3 95 14.6 13.7 107 DOME LAKE 8880 11.0 14.0 79 13.1 13.5 97 GRAVE SPRINGS 8550 9.2 -M * 10.1 9.9 102 HANSEN SAWMILL 8760 7.7 7.2 107 9.4 8.1 116 MIDDLE POWDER 7760 10.9 12.5 87 10.6 12.1 88 POWDER RIVER PASS 9480 11.0 11.1 99 12.0 11.8 102 SUCKER CREEK 8880 11.9 12.4 96 13.4 13.4 100 TIE CREEK 6870 7.0 -M * 12.3 11.3 109 ----- ----- Basin wide percent of average 93 101 BELLE FOURCHE BLIND PARK 6890 8.5 11.2 76 12.9 10.4 124 NORTH RAPID CREEK 6130 10.2 -M * 10.5 -M * WARREN PEAK 6520 12.4 11.2 111 10.8 8.2 132 ----- ----- Basin wide percent of average 93 127 UPPER N. PLATTE RIVER COLUMBINE 9400 21.0 24.8 85 22.2 24.9 89 DIVIDE PEAK 8800 19.9 21.4 93 20.5 23.3 88 ELK RIVER 8700 16.5 20.1 82 18.8 19.5 96 JOE WRIGHT 10120 20.1 22.6 89 23.2 25.5 91 NORTH FRENCH CREEK 10100 30.9 26.2 118 28.8 24.0 120 OLD BATTLE 10000 31.6 33.0 96 34.7 30.8 113 SOUTH BRUSH CREEK 8400 9.2 13.3 69 12.6 16.7 75 TOWER 10500 45.3 46.2 98 37.5 36.9 102 WEBBER SPRINGS 9200 19.6 28.4 69 25.2 25.7 98 WILLOW CREEK PASS 9540 7.5 12.3 61 7.5 12.9 58 ----- ----- Basin wide percent of average 89 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.8 27.0 81 21.2 19.8 107 CASPER MTN. 7900 12.7 17.1 74 12.6 14.5 87 DEADMAN HILL 10220 14.6 16.9 86 14.2 17.1 83 DEER PARK 9700 -M -M * 21.1 -M * LAPRELE CREEK 8320 9.2 10.5 88 11.4 12.1 94 RENO HILL 8400 12.3 14.6 84 11.9 19.5 61 ROACH 9700 14.8 17.6 84 16.8 21.6 78 SAND LAKE 10080 27.0 33.7 80 23.8 20.8 114 SOUTH PASS 9040 15.9 16.7 95 17.9 17.5 102 WINDY PEAK 7840 7.4 8.9 83 9.2 9.8 94 ----- ----- Basin wide percent of average 83 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 11.2 110 15.8 15.6 101 DIVIDE PEAK 8800 19.9 21.4 93 20.5 23.3 88 OLD BATTLE 10000 31.6 33.0 96 34.7 30.8 113 SANDSTONE RS 8150 14.6 15.1 97 19.4 19.0 102 WHISKEY PARK 8950 28.2 29.4 96 27.7 28.8 96 ----- ----- Basin wide percent of average 97 101 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.5 14.8 84 11.6 16.8 69 BLIND BULL SUM 8650 24.7 30.1 82 19.5 24.8 79 EAST RIM DIVIDE 7930 12.7 14.2 89 12.8 15.7 82 ELKHART PARK G.S. 9400 13.1 14.1 93 13.5 16.5 82 GROS VENTRE SUMMIT 8775 12.1 15.8 77 13.1 16.5 79 KENDALL R.S. 7740 14.1 14.4 98 15.1 16.1 94 LOOMIS PARK 8240 12.3 17.5 70 17.5 19.5 90 NEW FORK LAKE 8340 11.6 11.2 104 10.9 15.0 73 SNIDER BASIN 8250 12.7 15.0 85 12.9 15.7 82 SPRING CREEK DIVIDE 9000 21.7 28.5 76 22.1 28.4 78 TRIPLE PEAK 8500 21.9 26.1 84 22.7 32.0 71 ----- ----- Basin wide percent of average 84 79 LOWER GREEN RIVER HAMS FORK 7840 10.7 10.9 98 11.8 13.8 86 HEWINTA 9500 11.3 11.0 103 15.3 13.4 114 HICKERSON PARK 9150 12.2 6.8 179 13.1 9.8 134 HOLE-IN-ROCK 9150 9.3 6.4 145 11.3 9.8 115 INDIAN CREEK 9425 25.4 29.3 87 20.3 26.9 75 KELLEY R.S. 8180 16.0 17.4 92 16.9 19.4 87 STEEL CREEK PARK 10100 16.8 16.9 99 18.7 13.1 143 ----- ----- Basin wide percent of average 103 101 UPPER BEAR RIVER BUG LAKE 7950 20.0 21.0 95 21.2 19.9 107 HAYDEN FORK 9400 13.2 15.3 86 20.4 19.5 105 KELLEY R.S. 8180 16.0 17.4 92 16.9 19.4 87 LILY LAKE 9050 14.8 13.3 111 17.9 15.1 119 MONTE CRISTO 8960 30.1 29.8 101 27.1 26.2 103 SALT RIVER SUMMIT 7600 15.3 14.4 106 18.6 17.5 106 TRIAL LAKE 9960 21.2 25.2 84 23.1 24.4 95 ----- ----- Basin wide percent of average 96 102 ----------------------------------------------------------------------------- -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.