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 TUESDAY: APRIL 28 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.6 11.7 108 23.0 25.0 92 COTTONWOOD CREEK 7600 18.4 20.6 89 25.6 28.0 91 GRANITE CREEK 6770 13.9 13.8 101 22.2 26.5 84 GRASSY LAKE 7265 31.5 34.6 91 38.4 41.5 93 GROS VENTRE SUMMIT 8775 12.2 14.3 85 14.9 17.9 83 LEWIS LAKE DIVIDE 7860 32.6 34.9 93 35.3 42.2 84 PHILLIPS BENCH 8200 27.9 29.8 94 28.9 33.3 87 SALT RIVER SUMMIT 7600 13.4 11.4 118 20.1 19.0 106 SNAKE RIVER STATION 6920 14.8 16.8 88 24.8 29.1 85 SPRING CREEK DIVIDE 9000 24.1 29.6 81 24.2 30.5 79 THUMB DIVIDE 7980 16.3 15.5 105 20.0 23.4 85 TOGWOTEE PASS 9580 25.8 28.1 92 26.7 31.6 84 TWO OCEAN PLATEAU 9360 31.7 27.4 116 30.3 34.4 88 WILLOW CREEK 8450 26.1 31.9 82 35.0 35.9 97 ----- ----- Basin wide percent of average 94 88 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.4 25.9 79 18.3 20.9 88 BLACK BEAR 7950 41.5 39.9 104 39.9 46.0 87 CANYON 7940 12.2 11.4 107 16.4 16.1 102 FISHER CREEK 9100 31.3 38.6 81 30.7 41.7 74 MADISON PLATEAU 7750 21.8 24.1 90 25.7 29.6 87 NORTHEAST ENTRANCE 7350 2.7 6.5 42 12.7 13.7 93 PARKER PEAK 9400 20.2 23.6 86 17.8 18.0 99 SYLVAN LAKE 8420 18.0 23.8 76 22.7 22.0 103 THUMB DIVIDE 7980 16.3 15.5 105 20.0 23.4 85 TWO OCEAN PLATEAU 9360 31.7 27.4 116 30.3 34.4 88 WHISKEY CREEK 6800 15.7 15.8 99 21.4 24.6 87 WHITE MILL 8700 24.1 26.2 92 23.1 32.2 72 WOLVERINE 7650 5.5 8.8 62 11.0 15.0 73 ----- ----- Basin wide percent of average 91 86 WIND RIVER BURROUGHS CREEK 8750 17.3 13.4 129 19.3 19.1 101 COLD SPRINGS 9630 11.5 7.2 160 14.7 12.9 114 DEER PARK 9700 -M -M * 24.6 -M * HOBBS PARK 10100 19.7 17.7 111 18.1 17.0 106 LITTLE WARM 9620 12.2 11.0 111 15.9 16.0 99 SOUTH PASS 9040 17.4 18.0 97 21.0 20.3 103 ST. LAWRENCE ALT 8620 11.2 5.7 196 12.8 12.3 104 TOGWOTEE PASS 9580 25.8 28.1 92 26.7 31.6 84 TOWNSEND CREEK 8700 12.9 9.7 133 17.0 15.2 112 ----- ----- Basin wide percent of average 116 101 BIGHORN BASIN BALD MTN. 9375 22.7 23.8 95 20.4 20.5 100 BEAR TRAP MEADOW 7900 5.2 4.7 111 11.3 10.4 109 BLACKWATER 9780 22.7 25.5 89 20.4 20.4 100 BONE SPRINGS DIV 9350 19.9 18.3 109 19.8 17.8 111 EVENING STAR 9200 23.8 30.5 78 27.1 25.6 106 GRAVE SPRINGS 8550 12.4 -M * 13.9 12.1 115 KIRWIN 9550 13.6 11.6 117 15.9 13.1 121 MARQUETTE 8760 14.6 8.6 170 16.3 13.1 124 MIDDLE POWDER 7760 12.8 14.6 88 13.4 14.5 92 OWL CREEK 8975 8.1 3.6 225 9.7 7.9 123 POWDER RIVER PASS 9480 13.3 10.7 124 16.1 14.4 112 SHELL CREEK 9580 17.4 16.9 103 13.8 15.6 88 SYLVAN LAKE 8420 18.0 23.8 76 22.7 22.0 103 SYLVAN ROAD 8120 7.4 8.4 88 15.4 18.4 84 TIMBER CREEK 7950 9.2 6.1 151 12.7 9.7 131 YOUNTS PEAK 8350 16.0 18.3 87 16.8 19.0 88 ----- ----- Basin wide percent of average 100 104 SHOSHONE RIVER BLACKWATER 9780 22.7 25.5 89 20.4 20.4 100 EVENING STAR 9200 23.8 30.5 78 27.1 25.6 106 KIRWIN 9550 13.6 11.6 117 15.9 13.1 121 MARQUETTE 8760 14.6 8.6 170 16.3 13.1 124 SYLVAN LAKE 8420 18.0 23.8 76 22.7 22.0 103 SYLVAN ROAD 8120 7.4 8.4 88 15.4 18.4 84 YOUNTS PEAK 8350 16.0 18.3 87 16.8 19.0 88 ----- ----- Basin wide percent of average 92 102 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.2 4.7 111 11.3 10.4 109 BONE SPRINGS DIV 9350 19.9 18.3 109 19.8 17.8 111 BURGESS JUNCTION 7880 13.2 13.4 99 15.0 14.1 106 CLOUD PEAK RESERVOIR 9860 19.1 17.5 109 19.7 16.7 118 DOME LAKE 8880 -M 15.0 * 16.4 16.1 102 GRAVE SPRINGS 8550 12.4 -M * 13.9 12.1 115 HANSEN SAWMILL 8760 9.6 7.0 137 13.6 10.1 135 MIDDLE POWDER 7760 12.8 14.6 88 13.4 14.5 92 POWDER RIVER PASS 9480 13.3 10.7 124 16.1 14.4 112 SUCKER CREEK 8880 13.9 13.7 101 16.7 16.2 103 TIE CREEK 6870 7.5 -M * 16.3 13.5 121 ----- ----- Basin wide percent of average 107 110 BELLE FOURCHE BLIND PARK 6890 4.0 10.0 40 13.8 13.4 103 NORTH RAPID CREEK 6130 6.1 -M * 11.6 -M * WARREN PEAK 6520 9.7 10.0 97 12.4 10.1 123 ----- ----- Basin wide percent of average 69 111 UPPER N. PLATTE RIVER COLUMBINE 9400 16.6 22.5 74 25.4 27.7 92 DIVIDE PEAK 8800 18.8 19.8 95 22.5 26.9 84 ELK RIVER 8700 14.1 17.0 83 22.5 21.8 103 JOE WRIGHT 10120 23.5 24.6 96 27.3 29.8 92 NORTH FRENCH CREEK 10100 33.5 29.2 115 32.6 27.6 118 OLD BATTLE 10000 35.8 37.8 95 38.8 35.2 110 SOUTH BRUSH CREEK 8400 4.3 11.1 39 14.4 20.2 71 TOWER 10500 53.6 50.7 106 45.1 42.5 106 WEBBER SPRINGS 9200 20.9 26.5 79 28.6 30.1 95 WILLOW CREEK PASS 9540 9.5 13.5 70 9.6 15.1 64 ----- ----- Basin wide percent of average 91 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.3 28.9 88 24.7 23.4 106 CASPER MTN. 7900 11.6 18.0 64 15.0 18.3 82 DEADMAN HILL 10220 17.3 18.9 92 17.1 20.7 83 DEER PARK 9700 -M -M * 24.6 -M * LAPRELE CREEK 8320 5.8 7.0 83 12.7 14.4 88 RENO HILL 8400 11.4 13.8 83 13.7 22.1 62 ROACH 9700 16.4 18.1 91 19.5 25.3 77 SAND LAKE 10080 31.3 36.9 85 27.3 24.4 112 SOUTH PASS 9040 17.4 18.0 97 21.0 20.3 103 WINDY PEAK 7840 5.3 8.2 65 10.8 11.9 91 ----- ----- Basin wide percent of average 85 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.1 5.9 103 17.4 18.2 96 DIVIDE PEAK 8800 18.8 19.8 95 22.5 26.9 84 OLD BATTLE 10000 35.8 37.8 95 38.8 35.2 110 SANDSTONE RS 8150 10.0 10.8 93 21.5 22.6 95 WHISKEY PARK 8950 29.7 29.8 100 31.1 33.4 93 ----- ----- Basin wide percent of average 96 96 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.3 14.2 94 13.9 18.3 76 BLIND BULL SUM 8650 24.7 24.3 102 20.9 26.7 78 EAST RIM DIVIDE 7930 13.1 14.8 89 13.3 17.1 78 ELKHART PARK G.S. 9400 12.8 14.2 90 15.3 18.0 85 GROS VENTRE SUMMIT 8775 12.2 14.3 85 14.9 17.9 83 KENDALL R.S. 7740 10.6 11.1 95 16.6 17.4 95 LOOMIS PARK 8240 -M 15.4 * 19.1 21.2 90 NEW FORK LAKE 8340 9.4 9.4 100 12.5 16.2 77 SNIDER BASIN 8250 13.1 13.5 97 14.0 17.0 82 SPRING CREEK DIVIDE 9000 24.1 29.6 81 24.2 30.5 79 TRIPLE PEAK 8500 19.6 25.4 77 24.2 34.7 70 ----- ----- Basin wide percent of average 90 80 LOWER GREEN RIVER HAMS FORK 7840 6.8 5.7 119 13.0 15.1 86 HEWINTA 9500 10.6 6.0 177 17.3 16.0 108 HICKERSON PARK 9150 13.2 3.6 367 15.3 12.0 128 HOLE-IN-ROCK 9150 9.3 3.0 310 13.4 12.0 112 INDIAN CREEK 9425 25.5 29.2 87 21.8 28.9 75 KELLEY R.S. 8180 14.4 15.5 93 18.4 21.1 87 STEEL CREEK PARK 10100 20.5 18.7 110 21.5 15.8 136 ----- ----- Basin wide percent of average 123 100 UPPER BEAR RIVER BUG LAKE 7950 19.8 16.8 118 23.5 22.3 105 HAYDEN FORK 9400 13.0 7.4 176 23.6 22.6 104 KELLEY R.S. 8180 14.4 15.5 93 18.4 21.1 87 LILY LAKE 9050 14.1 9.5 148 20.7 17.7 117 MONTE CRISTO 8960 30.2 26.8 113 29.5 29.8 99 SALT RIVER SUMMIT 7600 13.4 11.4 118 20.1 19.0 106 TRIAL LAKE 9960 25.3 24.4 104 26.4 27.9 95 ----- ----- Basin wide percent of average 116 101 ----------------------------------------------------------------------------- -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.