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 14 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.5 16.1 90 21.2 23.8 89 COTTONWOOD CREEK 7600 21.6 23.4 92 24.8 26.8 93 GRANITE CREEK 6770 16.1 17.9 90 21.5 25.2 85 GRASSY LAKE 7265 32.2 37.7 85 36.1 39.7 91 GROS VENTRE SUMMIT 8775 12.2 16.0 76 13.6 17.1 80 LEWIS LAKE DIVIDE 7860 32.1 36.7 87 33.5 40.4 83 PHILLIPS BENCH 8200 27.4 30.8 89 27.3 31.9 86 SALT RIVER SUMMIT 7600 15.8 13.9 114 19.4 18.1 107 SNAKE RIVER STATION 6920 16.9 18.6 91 22.8 27.9 82 SPRING CREEK DIVIDE 9000 22.9 29.3 78 23.3 29.3 80 THUMB DIVIDE 7980 16.8 17.4 97 18.4 22.3 83 TOGWOTEE PASS 9580 26.8 26.9 100 24.8 30.3 82 TWO OCEAN PLATEAU 9360 29.3 26.6 110 28.4 32.8 87 WILLOW CREEK 8450 29.2 31.6 92 33.8 34.3 99 ----- ----- Basin wide percent of average 92 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.3 25.4 80 17.6 19.5 90 BLACK BEAR 7950 41.3 40.1 103 38.4 43.6 88 CANYON 7940 13.1 13.5 97 15.3 15.2 101 FISHER CREEK 9100 32.0 37.8 85 29.3 39.3 75 MADISON PLATEAU 7750 22.4 25.5 88 24.4 28.1 87 NORTHEAST ENTRANCE 7350 6.2 9.0 69 12.4 12.8 97 PARKER PEAK 9400 20.0 23.1 87 17.4 16.8 104 SYLVAN LAKE 8420 18.9 23.8 79 21.6 20.6 105 THUMB DIVIDE 7980 16.8 17.4 97 18.4 22.3 83 TWO OCEAN PLATEAU 9360 29.3 26.6 110 28.4 32.8 87 WHISKEY CREEK 6800 15.5 18.2 85 20.1 23.4 86 WHITE MILL 8700 24.5 25.8 95 22.5 30.4 74 WOLVERINE 7650 8.7 11.8 74 10.6 13.8 77 ----- ----- Basin wide percent of average 90 87 WIND RIVER BURROUGHS CREEK 8750 15.7 15.3 103 17.2 17.9 96 COLD SPRINGS 9630 11.2 8.7 129 12.8 11.7 109 DEER PARK 9700 -M -M * 22.5 -M * HOBBS PARK 10100 17.1 16.4 104 15.2 15.5 98 LITTLE WARM 9620 11.7 13.4 87 14.2 14.6 97 SOUTH PASS 9040 16.6 17.5 95 18.9 18.6 102 ST. LAWRENCE ALT 8620 10.7 7.1 151 11.1 11.2 99 TOGWOTEE PASS 9580 26.8 26.9 100 24.8 30.3 82 TOWNSEND CREEK 8700 12.2 10.4 117 14.9 13.8 108 ----- ----- Basin wide percent of average 105 97 BIGHORN BASIN BALD MTN. 9375 20.9 22.2 94 18.2 18.9 96 BEAR TRAP MEADOW 7900 6.9 6.9 100 9.4 9.2 102 BLACKWATER 9780 21.3 24.5 87 19.0 19.2 99 BONE SPRINGS DIV 9350 18.5 18.0 103 17.4 16.4 106 EVENING STAR 9200 24.0 29.1 82 25.8 24.1 107 GRAVE SPRINGS 8550 12.0 -M * 12.6 10.8 117 KIRWIN 9550 13.5 11.0 123 14.6 11.9 123 MARQUETTE 8760 14.0 8.7 161 14.1 11.2 126 MIDDLE POWDER 7760 12.6 13.5 93 12.2 13.1 93 OWL CREEK 8975 8.0 4.7 170 7.8 7.0 111 POWDER RIVER PASS 9480 13.7 11.6 118 14.8 12.9 115 SHELL CREEK 9580 16.0 16.1 99 12.5 14.3 87 SYLVAN LAKE 8420 18.9 23.8 79 21.6 20.6 105 SYLVAN ROAD 8120 10.3 10.9 94 15.0 17.2 87 TIMBER CREEK 7950 9.2 6.6 139 11.3 8.3 136 YOUNTS PEAK 8350 15.2 18.2 84 15.5 17.8 87 ----- ----- Basin wide percent of average 99 104 SHOSHONE RIVER BLACKWATER 9780 21.3 24.5 87 19.0 19.2 99 EVENING STAR 9200 24.0 29.1 82 25.8 24.1 107 KIRWIN 9550 13.5 11.0 123 14.6 11.9 123 MARQUETTE 8760 14.0 8.7 161 14.1 11.2 126 SYLVAN LAKE 8420 18.9 23.8 79 21.6 20.6 105 SYLVAN ROAD 8120 10.3 10.9 94 15.0 17.2 87 YOUNTS PEAK 8350 15.2 18.2 84 15.5 17.8 87 ----- ----- Basin wide percent of average 93 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 6.9 100 9.4 9.2 102 BONE SPRINGS DIV 9350 18.5 18.0 103 17.4 16.4 106 BURGESS JUNCTION 7880 12.1 12.8 95 13.3 12.8 104 CLOUD PEAK RESERVOIR 9860 16.0 16.7 96 16.3 14.9 109 DOME LAKE 8880 10.9 14.7 74 14.6 14.6 100 GRAVE SPRINGS 8550 12.0 -M * 12.6 10.8 117 HANSEN SAWMILL 8760 9.0 7.6 118 11.1 8.9 125 MIDDLE POWDER 7760 12.6 13.5 93 12.2 13.1 93 POWDER RIVER PASS 9480 13.7 11.6 118 14.8 12.9 115 SUCKER CREEK 8880 13.0 13.2 98 14.9 14.6 102 TIE CREEK 6870 -M -M * -M 12.2 * ----- ----- Basin wide percent of average 98 107 BELLE FOURCHE BLIND PARK 6890 8.1 11.6 70 13.5 11.6 116 NORTH RAPID CREEK 6130 9.2 -M * 10.9 -M * WARREN PEAK 6520 11.9 11.6 103 11.3 9.0 126 ----- ----- Basin wide percent of average 86 120 UPPER N. PLATTE RIVER COLUMBINE 9400 18.5 24.4 76 23.4 26.1 90 DIVIDE PEAK 8800 20.7 21.8 95 21.6 24.8 87 ELK RIVER 8700 17.5 20.4 86 20.4 20.5 100 JOE WRIGHT 10120 22.2 24.1 92 25.0 27.3 92 NORTH FRENCH CREEK 10100 33.7 28.0 120 30.8 25.5 121 OLD BATTLE 10000 34.3 35.5 97 36.9 32.6 113 SOUTH BRUSH CREEK 8400 8.2 13.0 63 13.6 18.2 75 TOWER 10500 49.7 48.7 102 41.0 39.2 105 WEBBER SPRINGS 9200 20.8 28.6 73 26.7 27.5 97 WILLOW CREEK PASS 9540 7.8 13.4 58 8.0 13.8 58 ----- ----- Basin wide percent of average 91 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.4 28.8 81 22.5 21.3 106 CASPER MTN. 7900 12.8 18.8 68 13.7 16.1 85 DEADMAN HILL 10220 15.8 17.7 89 15.2 18.6 82 DEER PARK 9700 -M -M * 22.5 -M * LAPRELE CREEK 8320 9.0 10.0 90 12.0 13.1 92 RENO HILL 8400 13.0 15.4 84 12.7 20.6 62 ROACH 9700 15.4 18.1 85 17.8 23.1 77 SAND LAKE 10080 29.2 35.5 82 25.6 22.3 115 SOUTH PASS 9040 16.6 17.5 95 18.9 18.6 102 WINDY PEAK 7840 7.4 9.3 80 10.0 10.7 93 ----- ----- Basin wide percent of average 83 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.9 10.9 100 16.5 16.7 99 DIVIDE PEAK 8800 20.7 21.8 95 21.6 24.8 87 OLD BATTLE 10000 34.3 35.5 97 36.9 32.6 113 SANDSTONE RS 8150 14.8 15.3 97 20.7 20.5 101 WHISKEY PARK 8950 29.9 30.6 98 29.7 30.7 97 ----- ----- Basin wide percent of average 97 100 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.5 15.4 88 12.7 17.4 73 BLIND BULL SUM 8650 25.5 30.9 83 20.4 25.6 80 EAST RIM DIVIDE 7930 13.2 14.9 89 13.0 16.3 80 ELKHART PARK G.S. 9400 13.7 14.9 92 14.2 17.1 83 GROS VENTRE SUMMIT 8775 12.2 16.0 76 13.6 17.1 80 KENDALL R.S. 7740 13.9 13.2 105 15.7 16.6 95 LOOMIS PARK 8240 12.8 16.9 76 18.1 20.2 90 NEW FORK LAKE 8340 11.4 10.7 107 11.3 15.5 73 SNIDER BASIN 8250 13.4 15.5 86 13.6 16.2 84 SPRING CREEK DIVIDE 9000 22.9 29.3 78 23.3 29.3 80 TRIPLE PEAK 8500 21.9 26.8 82 23.3 33.1 70 ----- ----- Basin wide percent of average 85 80 LOWER GREEN RIVER HAMS FORK 7840 10.6 6.2 171 12.4 14.3 87 HEWINTA 9500 13.8 9.2 150 16.2 14.5 112 HICKERSON PARK 9150 14.1 6.6 214 14.0 10.7 131 HOLE-IN-ROCK 9150 10.9 6.2 176 12.3 10.7 115 INDIAN CREEK 9425 26.4 30.3 87 21.0 27.7 76 KELLEY R.S. 8180 16.1 17.6 91 17.6 20.1 88 STEEL CREEK PARK 10100 18.4 17.8 103 20.1 14.2 142 ----- ----- Basin wide percent of average 117 101 UPPER BEAR RIVER BUG LAKE 7950 21.5 20.1 107 22.3 20.9 107 HAYDEN FORK 9400 14.3 11.2 128 21.9 20.8 105 KELLEY R.S. 8180 16.1 17.6 91 17.6 20.1 88 LILY LAKE 9050 15.4 12.9 119 19.0 16.2 117 MONTE CRISTO 8960 32.3 29.3 110 28.8 27.7 104 SALT RIVER SUMMIT 7600 15.8 13.9 114 19.4 18.1 107 TRIAL LAKE 9960 23.8 25.9 92 25.1 25.9 97 ----- ----- Basin wide percent of average 106 103 ----------------------------------------------------------------------------- -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.