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 FRIDAY: APRIL 10 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.3 16.6 92 20.8 23.5 89 COTTONWOOD CREEK 7600 21.4 23.7 90 24.3 26.5 92 GRANITE CREEK 6770 16.4 18.2 90 21.2 24.8 85 GRASSY LAKE 7265 31.9 37.3 86 35.3 39.2 90 GROS VENTRE SUMMIT 8775 12.3 15.9 77 13.4 16.8 80 LEWIS LAKE DIVIDE 7860 31.6 36.4 87 33.0 39.9 83 PHILLIPS BENCH 8200 27.1 30.4 89 27.0 31.5 86 SALT RIVER SUMMIT 7600 15.6 14.1 111 19.0 17.9 106 SNAKE RIVER STATION 6920 17.1 18.7 91 22.5 27.5 82 SPRING CREEK DIVIDE 9000 21.9 29.0 76 22.6 28.9 78 THUMB DIVIDE 7980 16.5 17.3 95 17.9 22.0 81 TOGWOTEE PASS 9580 25.8 26.4 98 24.6 29.9 82 TWO OCEAN PLATEAU 9360 28.7 26.7 107 28.2 32.4 87 WILLOW CREEK 8450 28.7 31.3 92 32.8 33.9 97 ----- ----- Basin wide percent of average 91 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 19.9 24.9 80 17.2 19.1 90 BLACK BEAR 7950 40.5 39.6 102 37.4 42.9 87 CANYON 7940 12.8 13.4 96 15.1 15.0 101 FISHER CREEK 9100 31.1 37.3 83 28.8 38.6 75 MADISON PLATEAU 7750 21.6 25.3 85 23.5 27.7 85 NORTHEAST ENTRANCE 7350 6.1 9.1 67 12.1 12.5 97 PARKER PEAK 9400 19.8 22.7 87 17.1 16.5 104 SYLVAN LAKE 8420 18.4 23.3 79 21.1 20.2 104 THUMB DIVIDE 7980 16.5 17.3 95 17.9 22.0 81 TWO OCEAN PLATEAU 9360 28.7 26.7 107 28.2 32.4 87 WHISKEY CREEK 6800 14.7 18.0 82 19.2 23.0 83 WHITE MILL 8700 23.9 25.6 93 21.9 29.9 73 WOLVERINE 7650 9.7 11.8 82 10.5 13.5 78 ----- ----- Basin wide percent of average 89 86 WIND RIVER BURROUGHS CREEK 8750 15.5 15.2 102 17.0 17.5 97 COLD SPRINGS 9630 11.3 8.6 131 12.6 11.4 111 DEER PARK 9700 -M -M * 22.0 -M * HOBBS PARK 10100 16.8 16.0 105 15.0 15.1 99 LITTLE WARM 9620 11.6 12.8 91 13.9 14.2 98 SOUTH PASS 9040 16.5 17.2 96 18.6 18.2 102 ST. LAWRENCE ALT 8620 10.7 7.3 147 11.0 10.9 101 TOGWOTEE PASS 9580 25.8 26.4 98 24.6 29.9 82 TOWNSEND CREEK 8700 12.3 10.2 121 14.8 13.4 110 ----- ----- Basin wide percent of average 106 98 BIGHORN BASIN BALD MTN. 9375 20.6 21.7 95 18.1 18.4 98 BEAR TRAP MEADOW 7900 7.5 7.0 107 9.0 8.9 101 BLACKWATER 9780 20.9 23.9 87 18.6 18.9 98 BONE SPRINGS DIV 9350 18.0 17.5 103 17.0 16.0 106 EVENING STAR 9200 23.6 28.5 83 25.4 23.7 107 GRAVE SPRINGS 8550 11.5 -M * 12.0 10.4 115 KIRWIN 9550 13.3 10.7 124 14.4 11.6 124 MARQUETTE 8760 13.7 8.5 161 13.8 10.7 129 MIDDLE POWDER 7760 12.2 13.1 93 11.8 12.7 93 OWL CREEK 8975 8.3 4.7 177 7.5 6.8 110 POWDER RIVER PASS 9480 13.5 11.4 118 14.3 12.5 114 SHELL CREEK 9580 15.6 15.8 99 12.1 13.9 87 SYLVAN LAKE 8420 18.4 23.3 79 21.1 20.2 104 SYLVAN ROAD 8120 10.4 11.4 91 14.8 16.9 88 TIMBER CREEK 7950 9.2 6.5 142 11.0 7.9 139 YOUNTS PEAK 8350 15.1 17.9 84 15.4 17.5 88 ----- ----- Basin wide percent of average 99 104 SHOSHONE RIVER BLACKWATER 9780 20.9 23.9 87 18.6 18.9 98 EVENING STAR 9200 23.6 28.5 83 25.4 23.7 107 KIRWIN 9550 13.3 10.7 124 14.4 11.6 124 MARQUETTE 8760 13.7 8.5 161 13.8 10.7 129 SYLVAN LAKE 8420 18.4 23.3 79 21.1 20.2 104 SYLVAN ROAD 8120 10.4 11.4 91 14.8 16.9 88 YOUNTS PEAK 8350 15.1 17.9 84 15.4 17.5 88 ----- ----- Basin wide percent of average 93 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.5 7.0 107 9.0 8.9 101 BONE SPRINGS DIV 9350 18.0 17.5 103 17.0 16.0 106 BURGESS JUNCTION 7880 11.9 12.5 95 13.1 12.4 106 CLOUD PEAK RESERVOIR 9860 15.6 16.1 97 15.8 14.4 110 DOME LAKE 8880 10.8 14.4 75 14.3 14.2 101 GRAVE SPRINGS 8550 11.5 -M * 12.0 10.4 115 HANSEN SAWMILL 8760 8.9 7.4 120 10.6 8.6 123 MIDDLE POWDER 7760 12.2 13.1 93 11.8 12.7 93 POWDER RIVER PASS 9480 13.5 11.4 118 14.3 12.5 114 SUCKER CREEK 8880 12.8 12.9 99 14.6 14.1 104 TIE CREEK 6870 8.0 -M * 13.7 11.8 116 ----- ----- Basin wide percent of average 99 108 BELLE FOURCHE BLIND PARK 6890 8.7 11.4 76 13.5 11.1 122 NORTH RAPID CREEK 6130 9.9 -M * 10.8 -M * WARREN PEAK 6520 12.6 11.4 111 11.1 8.7 128 ----- ----- Basin wide percent of average 93 124 UPPER N. PLATTE RIVER COLUMBINE 9400 20.5 24.6 83 22.7 25.6 89 DIVIDE PEAK 8800 20.6 21.6 95 21.0 24.2 87 ELK RIVER 8700 17.2 20.3 85 19.4 20.1 97 JOE WRIGHT 10120 21.2 23.5 90 24.1 26.6 91 NORTH FRENCH CREEK 10100 32.4 27.3 119 29.4 24.9 118 OLD BATTLE 10000 33.1 34.5 96 35.7 31.9 112 SOUTH BRUSH CREEK 8400 8.2 13.1 63 13.2 17.6 75 TOWER 10500 47.4 47.7 99 37.5 38.3 98 WEBBER SPRINGS 9200 20.1 28.5 71 25.9 26.8 97 WILLOW CREEK PASS 9540 7.7 13.0 59 7.6 13.4 57 ----- ----- Basin wide percent of average 90 95 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.6 28.1 80 22.0 20.7 106 CASPER MTN. 7900 13.2 18.1 73 13.3 15.4 86 DEADMAN HILL 10220 15.3 17.4 88 14.9 18.0 83 DEER PARK 9700 -M -M * 22.0 -M * LAPRELE CREEK 8320 9.9 10.2 97 11.9 12.7 94 RENO HILL 8400 13.4 15.1 89 12.6 20.2 62 ROACH 9700 15.5 17.9 87 17.2 22.5 76 SAND LAKE 10080 28.5 34.8 82 24.9 21.7 115 SOUTH PASS 9040 16.5 17.2 96 18.6 18.2 102 WINDY PEAK 7840 7.8 9.1 86 9.8 10.3 95 ----- ----- Basin wide percent of average 85 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.2 11.0 111 16.2 16.3 99 DIVIDE PEAK 8800 20.6 21.6 95 21.0 24.2 87 OLD BATTLE 10000 33.1 34.5 96 35.7 31.9 112 SANDSTONE RS 8150 15.2 15.2 100 20.0 19.9 101 WHISKEY PARK 8950 29.4 30.1 98 28.7 29.9 96 ----- ----- Basin wide percent of average 98 100 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.9 15.2 85 12.1 17.2 70 BLIND BULL SUM 8650 25.1 30.6 82 20.0 25.3 79 EAST RIM DIVIDE 7930 13.0 14.6 89 12.9 16.0 81 ELKHART PARK G.S. 9400 13.3 14.6 91 13.9 16.9 82 GROS VENTRE SUMMIT 8775 12.3 15.9 77 13.4 16.8 80 KENDALL R.S. 7740 14.6 13.7 107 15.7 16.4 96 LOOMIS PARK 8240 11.6 17.2 67 18.0 19.9 90 NEW FORK LAKE 8340 12.0 10.9 110 11.1 15.3 73 SNIDER BASIN 8250 12.8 15.3 84 13.0 16.0 81 SPRING CREEK DIVIDE 9000 21.9 29.0 76 22.6 28.9 78 TRIPLE PEAK 8500 21.8 26.5 82 22.9 32.7 70 ----- ----- Basin wide percent of average 84 79 LOWER GREEN RIVER HAMS FORK 7840 11.0 8.1 136 12.1 14.2 85 HEWINTA 9500 13.5 9.9 136 16.1 14.1 114 HICKERSON PARK 9150 13.7 6.7 204 13.8 10.3 134 HOLE-IN-ROCK 9150 10.8 6.3 171 12.1 10.3 117 INDIAN CREEK 9425 25.6 29.9 86 20.5 27.4 75 KELLEY R.S. 8180 16.0 17.5 91 17.0 19.8 86 STEEL CREEK PARK 10100 17.9 17.4 103 19.6 13.8 142 ----- ----- Basin wide percent of average 113 101 UPPER BEAR RIVER BUG LAKE 7950 20.9 20.5 102 21.8 20.5 106 HAYDEN FORK 9400 14.6 12.8 114 21.5 20.3 106 KELLEY R.S. 8180 16.0 17.5 91 17.0 19.8 86 LILY LAKE 9050 15.3 13.1 117 18.7 15.8 118 MONTE CRISTO 8960 31.0 29.5 105 27.8 27.1 103 SALT RIVER SUMMIT 7600 15.6 14.1 111 19.0 17.9 106 TRIAL LAKE 9960 22.7 25.6 89 24.4 25.3 96 ----- ----- Basin wide percent of average 102 102 ----------------------------------------------------------------------------- -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.