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: APRIL 15 , 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 16.0 91 21.2 23.9 89 COTTONWOOD CREEK 7600 21.7 23.3 93 25.1 26.9 93 GRANITE CREEK 6770 15.8 17.8 89 21.5 25.3 85 GRASSY LAKE 7265 32.5 37.8 86 36.6 39.9 92 GROS VENTRE SUMMIT 8775 12.1 16.0 76 13.6 17.1 80 LEWIS LAKE DIVIDE 7860 32.6 36.8 89 34.2 40.5 84 PHILLIPS BENCH 8200 27.5 30.9 89 27.4 32.0 86 SALT RIVER SUMMIT 7600 15.9 13.8 115 19.6 18.2 108 SNAKE RIVER STATION 6920 17.2 18.6 92 23.3 28.0 83 SPRING CREEK DIVIDE 9000 23.3 29.4 79 23.6 29.4 80 THUMB DIVIDE 7980 17.1 17.4 98 18.8 22.4 84 TOGWOTEE PASS 9580 25.2 27.0 93 25.1 30.4 83 TWO OCEAN PLATEAU 9360 29.8 26.6 112 28.4 32.9 86 WILLOW CREEK 8450 29.4 31.7 93 34.0 34.4 99 ----- ----- Basin wide percent of average 92 88 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.3 25.5 80 17.6 19.6 90 BLACK BEAR 7950 41.5 40.2 103 38.6 43.7 88 CANYON 7940 13.3 13.5 99 15.7 15.3 103 FISHER CREEK 9100 32.0 37.9 84 29.3 39.5 74 MADISON PLATEAU 7750 22.9 25.6 89 24.8 28.2 88 NORTHEAST ENTRANCE 7350 6.2 9.0 69 12.4 12.8 97 PARKER PEAK 9400 20.1 23.2 87 17.4 16.9 103 SYLVAN LAKE 8420 18.9 23.9 79 21.6 20.7 104 THUMB DIVIDE 7980 17.1 17.4 98 18.8 22.4 84 TWO OCEAN PLATEAU 9360 29.8 26.6 112 28.4 32.9 86 WHISKEY CREEK 6800 15.9 18.2 87 20.5 23.5 87 WHITE MILL 8700 24.5 25.8 95 22.5 30.5 74 WOLVERINE 7650 8.8 11.8 75 10.7 13.9 77 ----- ----- Basin wide percent of average 91 87 WIND RIVER BURROUGHS CREEK 8750 16.7 15.3 109 18.2 18.0 101 COLD SPRINGS 9630 11.9 8.7 137 13.4 11.8 114 DEER PARK 9700 -M -M * 22.9 -M * HOBBS PARK 10100 17.7 16.5 107 15.7 15.6 101 LITTLE WARM 9620 12.1 13.5 90 14.8 14.7 101 SOUTH PASS 9040 17.2 17.6 98 19.4 18.7 104 ST. LAWRENCE ALT 8620 11.4 7.1 161 11.5 11.3 102 TOGWOTEE PASS 9580 25.2 27.0 93 25.1 30.4 83 TOWNSEND CREEK 8700 12.4 10.4 119 15.2 13.9 109 ----- ----- Basin wide percent of average 107 99 BIGHORN BASIN BALD MTN. 9375 21.4 22.3 96 18.8 19.0 99 BEAR TRAP MEADOW 7900 7.6 6.9 110 10.0 9.3 108 BLACKWATER 9780 21.7 24.7 88 19.4 19.3 101 BONE SPRINGS DIV 9350 18.7 18.1 103 17.7 16.5 107 EVENING STAR 9200 24.1 29.2 83 26.0 24.2 107 GRAVE SPRINGS 8550 12.2 -M * 12.7 10.9 117 KIRWIN 9550 13.9 11.1 125 15.0 12.0 125 MARQUETTE 8760 15.0 8.7 172 15.1 11.4 132 MIDDLE POWDER 7760 12.7 13.6 93 12.3 13.2 93 OWL CREEK 8975 8.7 4.7 185 8.3 7.1 117 POWDER RIVER PASS 9480 14.1 11.6 122 14.9 13.0 115 SHELL CREEK 9580 16.2 16.2 100 12.6 14.4 88 SYLVAN LAKE 8420 18.9 23.9 79 21.6 20.7 104 SYLVAN ROAD 8120 10.2 10.8 94 15.0 17.3 87 TIMBER CREEK 7950 -M 6.6 * 12.1 8.4 144 YOUNTS PEAK 8350 15.6 18.3 85 16.0 17.9 89 ----- ----- Basin wide percent of average 99 105 SHOSHONE RIVER BLACKWATER 9780 21.7 24.7 88 19.4 19.3 101 EVENING STAR 9200 24.1 29.2 83 26.0 24.2 107 KIRWIN 9550 13.9 11.1 125 15.0 12.0 125 MARQUETTE 8760 15.0 8.7 172 15.1 11.4 132 SYLVAN LAKE 8420 18.9 23.9 79 21.6 20.7 104 SYLVAN ROAD 8120 10.2 10.8 94 15.0 17.3 87 YOUNTS PEAK 8350 15.6 18.3 85 16.0 17.9 89 ----- ----- Basin wide percent of average 94 104 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.6 6.9 110 10.0 9.3 108 BONE SPRINGS DIV 9350 18.7 18.1 103 17.7 16.5 107 BURGESS JUNCTION 7880 12.3 12.9 95 13.5 12.9 105 CLOUD PEAK RESERVOIR 9860 17.4 16.8 104 -M 15.1 * DOME LAKE 8880 11.1 14.8 75 15.0 14.7 102 GRAVE SPRINGS 8550 12.2 -M * 12.7 10.9 117 HANSEN SAWMILL 8760 -M 7.6 * -M 9.0 * MIDDLE POWDER 7760 12.7 13.6 93 12.3 13.2 93 POWDER RIVER PASS 9480 14.1 11.6 122 14.9 13.0 115 SUCKER CREEK 8880 13.5 13.3 102 15.0 14.7 102 TIE CREEK 6870 8.4 -M * 14.9 12.3 121 ----- ----- Basin wide percent of average 99 107 BELLE FOURCHE BLIND PARK 6890 8.0 11.6 69 13.6 11.8 115 NORTH RAPID CREEK 6130 9.0 -M * 11.1 -M * WARREN PEAK 6520 12.2 11.6 105 11.5 9.1 126 ----- ----- Basin wide percent of average 87 120 UPPER N. PLATTE RIVER COLUMBINE 9400 18.9 24.4 77 23.7 26.2 90 DIVIDE PEAK 8800 20.8 21.8 95 21.7 24.9 87 ELK RIVER 8700 17.6 20.4 86 20.7 20.6 100 JOE WRIGHT 10120 22.4 24.2 93 25.1 27.5 91 NORTH FRENCH CREEK 10100 34.0 28.2 121 31.1 25.6 121 OLD BATTLE 10000 34.4 35.8 96 37.0 32.8 113 SOUTH BRUSH CREEK 8400 7.3 13.0 56 13.8 18.3 75 TOWER 10500 50.3 49.0 103 41.0 39.5 104 WEBBER SPRINGS 9200 20.9 28.6 73 26.8 27.7 97 WILLOW CREEK PASS 9540 8.1 13.5 60 8.0 13.9 58 ----- ----- Basin wide percent of average 91 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.7 29.0 82 22.8 21.5 106 CASPER MTN. 7900 13.3 19.0 70 14.1 16.2 87 DEADMAN HILL 10220 15.9 17.8 89 15.6 18.8 83 DEER PARK 9700 -M -M * 22.9 -M * LAPRELE CREEK 8320 9.2 10.0 92 12.3 13.2 93 RENO HILL 8400 13.4 15.5 86 13.1 20.7 63 ROACH 9700 16.0 18.1 88 18.2 23.3 78 SAND LAKE 10080 29.4 35.7 82 25.8 22.4 115 SOUTH PASS 9040 17.2 17.6 98 19.4 18.7 104 WINDY PEAK 7840 7.6 9.3 82 10.2 10.8 94 ----- ----- Basin wide percent of average 85 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.0 10.9 101 16.6 16.8 99 DIVIDE PEAK 8800 20.8 21.8 95 21.7 24.9 87 OLD BATTLE 10000 34.4 35.8 96 37.0 32.8 113 SANDSTONE RS 8150 14.9 15.3 97 20.8 20.7 100 WHISKEY PARK 8950 30.2 30.7 98 30.0 30.9 97 ----- ----- Basin wide percent of average 97 100 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.6 15.4 88 12.8 17.5 73 BLIND BULL SUM 8650 25.8 31.0 83 20.6 25.7 80 EAST RIM DIVIDE 7930 13.2 15.0 88 13.0 16.3 80 ELKHART PARK G.S. 9400 13.6 15.0 91 14.3 17.2 83 GROS VENTRE SUMMIT 8775 12.1 16.0 76 13.6 17.1 80 KENDALL R.S. 7740 13.8 13.1 105 15.9 16.7 95 LOOMIS PARK 8240 -M 16.9 * 18.2 20.3 90 NEW FORK LAKE 8340 11.5 10.7 107 11.5 15.5 74 SNIDER BASIN 8250 13.5 15.5 87 13.7 16.3 84 SPRING CREEK DIVIDE 9000 23.3 29.4 79 23.6 29.4 80 TRIPLE PEAK 8500 22.2 26.9 83 23.6 33.2 71 ----- ----- Basin wide percent of average 86 80 LOWER GREEN RIVER HAMS FORK 7840 10.8 5.7 189 12.7 14.4 88 HEWINTA 9500 14.0 9.0 156 16.2 14.6 111 HICKERSON PARK 9150 14.1 6.6 214 14.0 10.8 130 HOLE-IN-ROCK 9150 11.0 6.2 177 12.4 10.8 115 INDIAN CREEK 9425 26.5 30.4 87 21.3 27.8 77 KELLEY R.S. 8180 16.2 17.6 92 17.7 20.2 88 STEEL CREEK PARK 10100 18.4 17.9 103 20.2 14.3 141 ----- ----- Basin wide percent of average 119 101 UPPER BEAR RIVER BUG LAKE 7950 21.9 20.0 110 22.7 21.0 108 HAYDEN FORK 9400 14.3 10.8 132 22.1 20.9 106 KELLEY R.S. 8180 16.2 17.6 92 17.7 20.2 88 LILY LAKE 9050 15.6 12.9 121 19.3 16.3 118 MONTE CRISTO 8960 32.5 29.3 111 29.0 27.8 104 SALT RIVER SUMMIT 7600 15.9 13.8 115 19.6 18.2 108 TRIAL LAKE 9960 24.2 26.0 93 25.4 26.0 98 ----- ----- Basin wide percent of average 108 104 ----------------------------------------------------------------------------- -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.