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 SUNDAY: APRIL 12 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.7 16.4 90 21.0 23.7 89 COTTONWOOD CREEK 7600 21.1 23.6 89 24.4 26.6 92 GRANITE CREEK 6770 16.1 18.0 89 21.2 25.0 85 GRASSY LAKE 7265 31.9 37.5 85 35.7 39.5 90 GROS VENTRE SUMMIT 8775 12.0 16.0 75 13.4 17.0 79 LEWIS LAKE DIVIDE 7860 31.6 36.6 86 33.3 40.1 83 PHILLIPS BENCH 8200 27.5 30.6 90 27.2 31.7 86 SALT RIVER SUMMIT 7600 15.5 14.0 111 19.1 18.0 106 SNAKE RIVER STATION 6920 16.9 18.6 91 22.7 27.7 82 SPRING CREEK DIVIDE 9000 22.4 29.2 77 22.8 29.1 78 THUMB DIVIDE 7980 16.5 17.4 95 18.2 22.1 82 TOGWOTEE PASS 9580 25.9 26.6 97 24.8 30.1 82 TWO OCEAN PLATEAU 9360 29.2 26.6 110 28.2 32.6 87 WILLOW CREEK 8450 28.9 31.4 92 32.9 34.1 96 ----- ----- Basin wide percent of average 91 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.0 25.1 80 17.5 19.3 91 BLACK BEAR 7950 40.8 39.8 103 37.9 43.2 88 CANYON 7940 12.8 13.4 96 15.2 15.1 101 FISHER CREEK 9100 31.5 37.5 84 29.0 39.0 74 MADISON PLATEAU 7750 21.8 25.4 86 23.9 27.9 86 NORTHEAST ENTRANCE 7350 6.2 9.0 69 12.4 12.6 98 PARKER PEAK 9400 19.9 22.9 87 17.3 16.6 104 SYLVAN LAKE 8420 18.5 23.6 78 21.3 20.4 104 THUMB DIVIDE 7980 16.5 17.4 95 18.2 22.1 82 TWO OCEAN PLATEAU 9360 29.2 26.6 110 28.2 32.6 87 WHISKEY CREEK 6800 15.0 18.1 83 19.4 23.2 84 WHITE MILL 8700 24.2 25.7 94 22.2 30.1 74 WOLVERINE 7650 9.1 11.8 77 10.5 13.7 77 ----- ----- Basin wide percent of average 90 86 WIND RIVER BURROUGHS CREEK 8750 15.6 15.2 103 17.0 17.7 96 COLD SPRINGS 9630 11.3 8.6 131 12.7 11.5 110 DEER PARK 9700 -M -M * 22.2 -M * HOBBS PARK 10100 17.0 16.2 105 15.1 15.3 99 LITTLE WARM 9620 11.6 13.1 89 14.0 14.4 97 SOUTH PASS 9040 -M 17.3 * 18.7 18.4 102 ST. LAWRENCE ALT 8620 10.7 7.2 149 11.1 11.0 101 TOGWOTEE PASS 9580 25.9 26.6 97 24.8 30.1 82 TOWNSEND CREEK 8700 12.1 10.3 117 15.0 13.6 110 ----- ----- Basin wide percent of average 107 97 BIGHORN BASIN BALD MTN. 9375 20.7 21.9 95 18.1 18.6 97 BEAR TRAP MEADOW 7900 7.1 7.0 101 9.4 9.1 103 BLACKWATER 9780 21.1 24.2 87 18.8 19.0 99 BONE SPRINGS DIV 9350 18.2 17.8 102 17.2 16.2 106 EVENING STAR 9200 23.7 28.8 82 25.5 23.9 107 GRAVE SPRINGS 8550 11.3 -M * 12.0 10.6 113 KIRWIN 9550 13.5 10.9 124 14.6 11.7 125 MARQUETTE 8760 13.0 8.6 151 14.1 11.0 128 MIDDLE POWDER 7760 12.1 13.3 91 11.7 12.9 91 OWL CREEK 8975 8.2 4.7 174 7.7 6.9 112 POWDER RIVER PASS 9480 13.2 11.5 115 14.5 12.7 114 SHELL CREEK 9580 15.8 15.9 99 12.1 14.1 86 SYLVAN LAKE 8420 18.5 23.6 78 21.3 20.4 104 SYLVAN ROAD 8120 10.2 11.2 91 14.9 17.1 87 TIMBER CREEK 7950 8.9 6.5 137 10.9 8.1 135 YOUNTS PEAK 8350 15.2 18.1 84 15.5 17.7 88 ----- ----- Basin wide percent of average 98 104 SHOSHONE RIVER BLACKWATER 9780 21.1 24.2 87 18.8 19.0 99 EVENING STAR 9200 23.7 28.8 82 25.5 23.9 107 KIRWIN 9550 13.5 10.9 124 14.6 11.7 125 MARQUETTE 8760 13.0 8.6 151 14.1 11.0 128 SYLVAN LAKE 8420 18.5 23.6 78 21.3 20.4 104 SYLVAN ROAD 8120 10.2 11.2 91 14.9 17.1 87 YOUNTS PEAK 8350 15.2 18.1 84 15.5 17.7 88 ----- ----- Basin wide percent of average 92 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.1 7.0 101 9.4 9.1 103 BONE SPRINGS DIV 9350 18.2 17.8 102 17.2 16.2 106 BURGESS JUNCTION 7880 11.9 12.7 94 13.2 12.6 105 CLOUD PEAK RESERVOIR 9860 15.5 16.4 95 15.9 14.7 108 DOME LAKE 8880 11.0 14.6 75 14.3 14.4 99 GRAVE SPRINGS 8550 11.3 -M * 12.0 10.6 113 HANSEN SAWMILL 8760 8.6 7.5 115 10.6 8.8 120 MIDDLE POWDER 7760 12.1 13.3 91 11.7 12.9 91 POWDER RIVER PASS 9480 13.2 11.5 115 14.5 12.7 114 SUCKER CREEK 8880 12.7 13.1 97 14.8 14.3 103 TIE CREEK 6870 7.5 -M * 13.7 12.0 114 ----- ----- Basin wide percent of average 97 107 BELLE FOURCHE BLIND PARK 6890 8.0 11.5 70 13.6 11.4 119 NORTH RAPID CREEK 6130 9.4 -M * 11.1 -M * WARREN PEAK 6520 11.9 11.5 103 11.4 8.8 130 ----- ----- Basin wide percent of average 87 124 UPPER N. PLATTE RIVER COLUMBINE 9400 -M 24.5 * 23.1 25.8 90 DIVIDE PEAK 8800 20.5 21.7 94 21.2 24.5 87 ELK RIVER 8700 16.7 20.3 82 19.5 20.3 96 JOE WRIGHT 10120 21.4 23.8 90 24.2 26.9 90 NORTH FRENCH CREEK 10100 32.6 27.6 118 29.8 25.2 118 OLD BATTLE 10000 33.2 35.0 95 36.0 32.2 112 SOUTH BRUSH CREEK 8400 8.7 13.1 66 13.2 17.9 74 TOWER 10500 47.5 48.2 99 40.7 38.8 105 WEBBER SPRINGS 9200 19.9 28.5 70 26.2 27.2 96 WILLOW CREEK PASS 9540 7.5 13.2 57 8.0 13.6 59 ----- ----- Basin wide percent of average 90 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.9 28.4 81 22.1 21.0 105 CASPER MTN. 7900 12.7 18.5 69 13.5 15.8 85 DEADMAN HILL 10220 15.6 17.5 89 15.0 18.3 82 DEER PARK 9700 -M -M * 22.2 -M * LAPRELE CREEK 8320 9.1 10.1 90 12.0 12.9 93 RENO HILL 8400 13.1 15.3 86 12.7 20.4 62 ROACH 9700 15.0 18.0 83 17.3 22.8 76 SAND LAKE 10080 28.4 35.1 81 24.9 22.0 113 SOUTH PASS 9040 -M 17.3 * 18.7 18.4 102 WINDY PEAK 7840 7.6 9.2 83 9.9 10.5 94 ----- ----- Basin wide percent of average 82 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.8 11.0 98 16.3 16.5 99 DIVIDE PEAK 8800 20.5 21.7 94 21.2 24.5 87 OLD BATTLE 10000 33.2 35.0 95 36.0 32.2 112 SANDSTONE RS 8150 14.2 15.2 93 20.0 20.2 99 WHISKEY PARK 8950 29.2 30.3 96 28.8 30.3 95 ----- ----- Basin wide percent of average 95 99 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.0 15.3 85 12.5 17.3 72 BLIND BULL SUM 8650 25.4 30.7 83 20.2 25.4 80 EAST RIM DIVIDE 7930 13.1 14.8 89 13.0 16.2 80 ELKHART PARK G.S. 9400 13.4 14.8 91 14.0 17.0 82 GROS VENTRE SUMMIT 8775 12.0 16.0 75 13.4 17.0 79 KENDALL R.S. 7740 14.0 13.4 104 15.8 16.5 96 LOOMIS PARK 8240 13.1 17.1 77 18.1 20.1 90 NEW FORK LAKE 8340 11.4 10.8 106 11.4 15.4 74 SNIDER BASIN 8250 12.9 15.4 84 13.2 16.1 82 SPRING CREEK DIVIDE 9000 22.4 29.2 77 22.8 29.1 78 TRIPLE PEAK 8500 21.5 26.7 81 23.1 32.9 70 ----- ----- Basin wide percent of average 84 80 LOWER GREEN RIVER HAMS FORK 7840 10.2 7.1 144 12.2 14.2 86 HEWINTA 9500 13.3 9.5 140 16.1 14.3 113 HICKERSON PARK 9150 13.5 6.7 201 13.9 10.5 132 HOLE-IN-ROCK 9150 10.2 6.3 162 12.1 10.5 115 INDIAN CREEK 9425 26.1 30.1 87 20.7 27.6 75 KELLEY R.S. 8180 15.8 17.5 90 17.2 20.0 86 STEEL CREEK PARK 10100 18.0 17.6 102 19.8 14.0 141 ----- ----- Basin wide percent of average 113 101 UPPER BEAR RIVER BUG LAKE 7950 20.9 20.3 103 22.0 20.7 106 HAYDEN FORK 9400 13.9 12.0 116 21.6 20.5 105 KELLEY R.S. 8180 15.8 17.5 90 17.2 20.0 86 LILY LAKE 9050 14.8 13.0 114 18.7 16.0 117 MONTE CRISTO 8960 31.6 29.4 107 28.0 27.4 102 SALT RIVER SUMMIT 7600 15.5 14.0 111 19.1 18.0 106 TRIAL LAKE 9960 23.1 25.8 90 24.4 25.6 95 ----- ----- Basin wide percent of average 103 102 ----------------------------------------------------------------------------- -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.