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 7 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.2 17.2 142 27.7 23.4 119 COTTONWOOD CREEK 7600 25.5 24.0 107 28.4 26.4 108 GRANITE CREEK 6770 22.2 18.4 121 23.5 24.7 96 GRASSY LAKE 7265 43.5 37.0 118 41.4 38.9 107 GROS VENTRE SUMMIT 8775 -M 16.0 * -M 16.7 * LEWIS LAKE DIVIDE 7860 41.5 36.3 115 40.8 39.5 104 PHILLIPS BENCH 8200 -M 30.2 * -M 31.4 * SALT RIVER SUMMIT 7600 16.2 14.4 114 18.9 17.7 107 SNAKE RIVER STATION 6920 22.4 18.9 119 26.4 27.4 97 SPRING CREEK DIVIDE 9000 31.4 28.9 109 28.9 28.7 101 THUMB DIVIDE 7980 -M 17.4 * -M 21.9 * TOGWOTEE PASS 9580 -M 26.0 * 29.0 29.7 98 TWO OCEAN PLATEAU 9360 37.3 26.9 139 31.7 32.2 99 WILLOW CREEK 8450 33.8 31.2 109 38.4 33.7 115 ----- ----- Basin wide percent of average 118 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.7 24.7 109 23.7 18.9 125 BLACK BEAR 7950 51.9 39.3 133 -M 42.4 * CANYON 7940 18.5 13.4 140 20.0 14.9 136 FISHER CREEK 9100 40.9 36.9 111 37.7 38.3 99 MADISON PLATEAU 7750 -M 25.2 * 33.0 27.4 121 NORTHEAST ENTRANCE 7350 12.0 9.2 130 14.5 12.5 117 PARKER PEAK 9400 24.2 22.5 108 -M 16.4 * SYLVAN LAKE 8420 26.9 23.0 117 28.2 20.0 142 THUMB DIVIDE 7980 -M 17.4 * -M 21.9 * TWO OCEAN PLATEAU 9360 37.3 26.9 139 31.7 32.2 99 WHISKEY CREEK 6800 -M 17.9 * -M 22.9 * WHITE MILL 8700 28.7 25.5 113 25.2 29.5 86 WOLVERINE 7650 11.7 11.9 100 13.1 13.4 99 ----- ----- Basin wide percent of average 120 110 WIND RIVER BURROUGHS CREEK 8750 -M 15.2 * -M 17.4 * COLD SPRINGS 9630 9.5 8.6 111 13.1 11.2 117 DEER PARK 9700 17.9 -M * 23.2 -M * HOBBS PARK 10100 19.0 15.9 121 17.9 15.0 121 LITTLE WARM 9620 15.1 12.5 121 16.7 14.0 120 SOUTH PASS 9040 19.0 17.0 112 20.2 17.9 113 ST. LAWRENCE ALT 8620 7.8 7.5 105 11.5 10.7 107 TOGWOTEE PASS 9580 -M 26.0 * 29.0 29.7 98 TOWNSEND CREEK 8700 11.2 10.2 110 14.5 13.2 110 ----- ----- Basin wide percent of average 114 111 BIGHORN BASIN BALD MTN. 9375 20.5 21.4 97 18.9 18.2 105 BEAR TRAP MEADOW 7900 5.0 7.1 71 10.1 8.7 117 BLACKWATER 9780 31.7 23.4 136 26.0 18.7 140 BONE SPRINGS DIV 9350 17.7 17.2 103 17.0 15.9 108 EVENING STAR 9200 33.9 28.2 121 35.3 23.4 151 GRAVE SPRINGS 8550 8.7 10.1 87 11.7 10.2 115 KIRWIN 9550 13.2 10.5 126 15.0 11.5 132 MARQUETTE 8760 9.2 8.5 110 10.0 10.5 96 MIDDLE POWDER 7760 11.7 13.0 91 16.5 12.5 133 OWL CREEK 8975 7.1 4.8 152 7.3 6.6 111 POWDER RIVER PASS 9480 12.6 11.4 112 15.6 12.2 128 SHELL CREEK 9580 17.2 15.6 111 15.9 13.7 116 SYLVAN LAKE 8420 26.9 23.0 117 28.2 20.0 142 SYLVAN ROAD 8120 -M 11.9 * -M 16.7 * TIMBER CREEK 7950 5.8 6.5 88 7.6 7.8 99 YOUNTS PEAK 8350 21.9 17.9 123 19.2 17.4 111 ----- ----- Basin wide percent of average 112 123 SHOSHONE RIVER BLACKWATER 9780 31.7 23.4 136 26.0 18.7 140 EVENING STAR 9200 33.9 28.2 121 35.3 23.4 151 KIRWIN 9550 13.2 10.5 126 15.0 11.5 132 MARQUETTE 8760 9.2 8.5 110 10.0 10.5 96 SYLVAN LAKE 8420 26.9 23.0 117 28.2 20.0 142 SYLVAN ROAD 8120 -M 11.9 * -M 16.7 * YOUNTS PEAK 8350 21.9 17.9 123 19.2 17.4 111 ----- ----- Basin wide percent of average 123 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.0 7.1 71 10.1 8.7 117 BIG GOOSE 7990 7.1 -M * 11.1 -M * BONE SPRINGS DIV 9350 17.7 17.2 103 17.0 15.9 108 BURGESS JUNCTION 7880 9.5 12.4 78 11.4 12.1 94 CLOUD PEAK RESERVOIR 9860 16.2 15.9 103 14.7 14.1 105 DOME LAKE 8880 -M 14.4 * 12.1 14.0 88 GRAVE SPRINGS 8550 8.7 10.1 87 11.7 10.2 115 HANSEN SAWMILL 8760 5.0 7.5 68 9.1 8.5 109 MIDDLE POWDER 7760 11.7 13.0 91 16.5 12.5 133 POWDER RIVER PASS 9480 12.6 11.4 112 15.6 12.2 128 SUCKER CREEK 8880 11.4 12.7 89 13.9 13.9 100 TIE CREEK 6870 -M -M * -M 11.6 * ----- ----- Basin wide percent of average 92 109 BELLE FOURCHE BLIND PARK 6890 7.0 11.5 62 16.4 10.9 151 NORTH RAPID CREEK 6130 6.3 -M * 13.7 -M * WARREN PEAK 6520 11.1 11.5 98 15.4 8.5 181 ----- ----- Basin wide percent of average 80 164 UPPER N. PLATTE RIVER COLUMBINE 9400 18.9 24.7 77 22.2 25.4 88 DIVIDE PEAK 8800 19.9 21.7 92 24.9 23.9 105 ELK RIVER 8700 16.7 20.2 83 22.4 19.9 114 JOE WRIGHT 10120 20.0 23.2 87 26.7 26.2 102 NORTH FRENCH CREEK 10100 30.7 26.9 115 29.2 24.5 120 OLD BATTLE 10000 29.9 33.8 89 36.3 31.4 116 SOUTH BRUSH CREEK 8400 11.2 13.4 85 19.9 17.2 116 TOWER 10500 -M 47.0 * -M 37.8 * WEBBER SPRINGS 9200 19.4 28.5 68 26.7 26.4 102 WILLOW CREEK PASS 9540 12.2 12.7 97 12.5 13.2 94 ----- ----- Basin wide percent of average 88 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.0 27.7 58 22.7 20.4 112 CASPER MTN. 7900 -M 17.7 * -M 15.0 * DEADMAN HILL 10220 16.2 17.2 95 17.4 17.7 99 DEER PARK 9700 17.9 -M * 23.2 -M * LAPRELE CREEK 8320 -M 10.5 * 14.9 12.5 120 RENO HILL 8400 14.4 15.0 96 19.2 19.9 96 ROACH 9700 15.5 17.9 87 19.7 22.2 89 SAND LAKE 10080 35.5 34.3 104 29.0 21.4 137 SOUTH PASS 9040 19.0 17.0 112 20.2 17.9 113 WINDY PEAK 7840 7.0 9.1 77 13.5 10.1 134 ----- ----- Basin wide percent of average 90 111 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.5 11.2 103 17.7 16.0 111 DIVIDE PEAK 8800 19.9 21.7 92 24.9 23.9 105 OLD BATTLE 10000 29.9 33.8 89 36.3 31.4 116 SANDSTONE RS 8150 12.5 15.2 83 20.7 19.5 107 WHISKEY PARK 8950 26.9 29.9 91 29.7 29.4 102 ----- ----- Basin wide percent of average 91 108 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.5 15.0 111 15.9 17.0 93 BLIND BULL SUM 8650 -M 30.4 * 23.0 25.2 92 EAST RIM DIVIDE 7930 14.4 14.5 99 14.7 16.0 93 ELKHART PARK G.S. 9400 14.4 14.5 100 15.1 16.7 91 GROS VENTRE SUMMIT 8775 -M 16.0 * -M 16.7 * KENDALL R.S. 7740 15.2 14.1 108 16.7 16.4 102 LOOMIS PARK 8240 -M 17.4 * 20.9 19.9 106 NEW FORK LAKE 8340 12.6 11.1 114 12.0 15.2 79 SNIDER BASIN 8250 18.0 15.2 119 18.4 16.0 116 SPRING CREEK DIVIDE 9000 31.4 28.9 109 28.9 28.7 101 TRIPLE PEAK 8500 30.9 26.4 117 30.9 32.4 96 ----- ----- Basin wide percent of average 110 97 LOWER GREEN RIVER HAMS FORK 7840 14.7 9.5 155 12.1 14.0 87 HEWINTA 9500 12.7 10.5 121 14.9 13.9 108 HICKERSON PARK 9150 6.3 6.8 92 10.2 10.1 101 HOLE-IN-ROCK 9150 6.6 6.5 104 10.6 10.1 105 INDIAN CREEK 9425 31.2 29.7 106 26.2 27.2 96 KELLEY R.S. 8180 17.4 17.5 100 19.2 19.7 98 STEEL CREEK PARK 10100 15.2 17.2 89 17.2 13.5 128 ----- ----- Basin wide percent of average 107 102 UPPER BEAR RIVER BUG LAKE 7950 23.2 20.9 112 20.9 20.4 103 HAYDEN FORK 9400 15.5 14.1 110 21.2 19.9 107 KELLEY R.S. 8180 17.4 17.5 100 19.2 19.7 98 LILY LAKE 9050 12.5 13.2 95 18.5 15.5 120 MONTE CRISTO 8960 27.0 29.7 91 27.0 26.7 102 SALT RIVER SUMMIT 7600 16.2 14.4 114 18.9 17.7 107 TRIAL LAKE 9960 21.4 25.5 84 22.5 24.9 91 ----- ----- Basin wide percent of average 99 103 ----------------------------------------------------------------------------- -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.