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 14 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.4 16.2 144 28.4 23.9 119 COTTONWOOD CREEK 7600 26.0 23.4 112 29.4 26.9 110 GRANITE CREEK 6770 22.2 17.9 124 24.0 25.4 95 GRASSY LAKE 7265 43.5 37.8 116 42.5 39.8 107 GROS VENTRE SUMMIT 8775 -M 16.0 * -M 17.2 * LEWIS LAKE DIVIDE 7860 41.7 36.8 114 41.3 40.4 103 PHILLIPS BENCH 8200 34.4 30.9 112 33.7 32.0 106 SALT RIVER SUMMIT 7600 16.5 14.0 119 19.4 18.2 107 SNAKE RIVER STATION 6920 21.5 18.7 115 26.5 27.9 95 SPRING CREEK DIVIDE 9000 32.4 29.4 111 30.0 29.4 103 THUMB DIVIDE 7980 -M 17.4 * -M 22.4 * TOGWOTEE PASS 9580 -M 26.9 * 30.7 30.4 101 TWO OCEAN PLATEAU 9360 38.0 26.7 143 32.0 32.9 98 WILLOW CREEK 8450 35.9 31.7 114 39.8 34.4 116 ----- ----- Basin wide percent of average 119 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 27.0 25.4 107 24.4 19.5 126 BLACK BEAR 7950 50.8 40.2 127 -M 43.7 * CANYON 7940 18.9 13.5 140 20.2 15.4 133 FISHER CREEK 9100 41.2 37.8 109 38.0 39.4 97 MADISON PLATEAU 7750 -M 25.7 * 33.7 28.2 120 NORTHEAST ENTRANCE 7350 -M 9.1 * -M 12.9 * PARKER PEAK 9400 25.0 23.2 108 -M 16.9 * SYLVAN LAKE 8420 27.4 23.9 116 29.2 20.7 141 THUMB DIVIDE 7980 -M 17.4 * -M 22.4 * TWO OCEAN PLATEAU 9360 38.0 26.7 143 32.0 32.9 98 WHISKEY CREEK 6800 22.0 18.2 121 25.5 23.4 109 WHITE MILL 8700 28.9 25.9 112 25.7 30.4 85 WOLVERINE 7650 13.0 11.9 111 13.5 14.0 97 ----- ----- Basin wide percent of average 119 109 WIND RIVER BURROUGHS CREEK 8750 17.9 15.4 117 19.2 17.9 107 COLD SPRINGS 9630 9.7 8.7 112 13.4 11.7 114 DEER PARK 9700 18.2 -M * 23.9 -M * HOBBS PARK 10100 19.2 16.5 116 17.9 15.6 115 LITTLE WARM 9620 15.5 13.5 116 17.5 14.7 120 SOUTH PASS 9040 19.4 17.7 111 20.9 18.7 112 ST. LAWRENCE ALT 8620 7.6 7.3 106 11.5 11.2 103 TOGWOTEE PASS 9580 -M 26.9 * 30.7 30.4 101 TOWNSEND CREEK 8700 11.0 10.5 106 15.0 14.0 108 ----- ----- Basin wide percent of average 113 109 BIGHORN BASIN BALD MTN. 9375 21.2 22.2 96 19.4 18.9 103 BEAR TRAP MEADOW 7900 2.9 7.0 42 10.5 9.4 112 BLACKWATER 9780 32.0 24.7 131 26.4 19.2 138 BONE SPRINGS DIV 9350 19.9 18.0 111 18.4 16.5 112 EVENING STAR 9200 34.3 29.2 118 35.8 24.2 149 GRAVE SPRINGS 8550 10.1 10.6 96 13.4 11.0 123 KIRWIN 9550 13.7 11.1 124 15.2 12.0 128 MARQUETTE 8760 10.1 8.7 117 11.0 11.4 98 MIDDLE POWDER 7760 15.7 13.5 117 18.9 13.2 144 OWL CREEK 8975 7.0 4.8 147 7.5 7.1 105 POWDER RIVER PASS 9480 12.0 11.6 104 16.0 13.0 124 SHELL CREEK 9580 17.7 16.2 109 16.2 14.5 113 SYLVAN LAKE 8420 27.4 23.9 116 29.2 20.7 141 SYLVAN ROAD 8120 -M 11.0 * -M 17.4 * TIMBER CREEK 7950 5.8 6.6 88 8.0 8.5 95 YOUNTS PEAK 8350 22.2 18.4 122 20.2 17.9 113 ----- ----- Basin wide percent of average 112 123 SHOSHONE RIVER BLACKWATER 9780 32.0 24.7 131 26.4 19.2 138 EVENING STAR 9200 34.3 29.2 118 35.8 24.2 149 KIRWIN 9550 13.7 11.1 124 15.2 12.0 128 MARQUETTE 8760 10.1 8.7 117 11.0 11.4 98 SYLVAN LAKE 8420 27.4 23.9 116 29.2 20.7 141 SYLVAN ROAD 8120 -M 11.0 * -M 17.4 * YOUNTS PEAK 8350 22.2 18.4 122 20.2 17.9 113 ----- ----- Basin wide percent of average 121 131 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.9 7.0 42 10.5 9.4 112 BIG GOOSE 7990 8.9 -M * 12.5 -M * BONE SPRINGS DIV 9350 19.9 18.0 111 18.4 16.5 112 BURGESS JUNCTION 7880 11.2 13.0 87 12.9 12.9 100 CLOUD PEAK RESERVOIR 9860 18.4 16.7 111 16.7 15.0 112 DOME LAKE 8880 -M 14.9 * 13.0 14.6 89 GRAVE SPRINGS 8550 10.1 10.6 96 13.4 11.0 123 HANSEN SAWMILL 8760 4.6 7.6 61 9.5 9.0 106 MIDDLE POWDER 7760 15.7 13.5 117 18.9 13.2 144 POWDER RIVER PASS 9480 12.0 11.6 104 16.0 13.0 124 SUCKER CREEK 8880 12.5 13.4 94 15.4 14.6 105 TIE CREEK 6870 -M -M * -M 12.4 * ----- ----- Basin wide percent of average 97 112 BELLE FOURCHE BLIND PARK 6890 6.3 11.6 54 16.9 11.7 145 NORTH RAPID CREEK 6130 6.6 -M * 14.6 -M * WARREN PEAK 6520 12.2 11.6 106 11.5 9.0 128 ----- ----- Basin wide percent of average 80 138 UPPER N. PLATTE RIVER COLUMBINE 9400 18.0 24.5 74 23.4 26.2 90 DIVIDE PEAK 8800 21.7 21.9 100 26.5 24.9 107 ELK RIVER 8700 17.2 20.4 84 24.2 20.5 119 JOE WRIGHT 10120 20.5 24.2 86 27.5 27.4 101 NORTH FRENCH CREEK 10100 33.7 28.2 120 31.9 25.5 125 OLD BATTLE 10000 32.0 35.7 90 38.8 32.7 119 SOUTH BRUSH CREEK 8400 11.6 13.1 89 20.7 18.2 114 TOWER 10500 47.0 48.8 97 40.8 39.3 104 WEBBER SPRINGS 9200 19.9 28.7 70 28.2 27.7 102 WILLOW CREEK PASS 9540 12.7 13.5 95 13.0 14.0 93 ----- ----- Basin wide percent of average 91 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 28.9 * 23.5 21.4 110 CASPER MTN. 7900 13.4 18.9 71 18.7 16.2 116 DEADMAN HILL 10220 16.7 17.9 94 17.9 18.7 96 DEER PARK 9700 18.2 -M * 23.9 -M * LAPRELE CREEK 8320 -M 10.1 * 16.4 13.1 125 RENO HILL 8400 15.7 15.5 102 20.9 20.7 101 ROACH 9700 16.4 18.2 91 20.7 23.2 89 SAND LAKE 10080 37.8 35.7 106 30.5 22.4 137 SOUTH PASS 9040 19.4 17.7 111 20.9 18.7 112 WINDY PEAK 7840 7.0 9.4 76 14.2 10.7 133 ----- ----- Basin wide percent of average 95 112 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.7 11.0 107 18.9 16.7 114 DIVIDE PEAK 8800 21.7 21.9 100 26.5 24.9 107 OLD BATTLE 10000 32.0 35.7 90 38.8 32.7 119 SANDSTONE RS 8150 13.6 15.4 89 22.2 20.7 108 WHISKEY PARK 8950 29.2 30.7 96 31.9 30.9 104 ----- ----- Basin wide percent of average 95 111 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.4 15.5 106 16.2 17.5 93 BLIND BULL SUM 8650 29.7 31.0 96 23.4 25.7 92 EAST RIM DIVIDE 7930 14.5 15.0 97 15.0 16.4 92 ELKHART PARK G.S. 9400 15.0 15.0 100 15.7 17.2 92 GROS VENTRE SUMMIT 8775 -M 16.0 * -M 17.2 * KENDALL R.S. 7740 16.0 13.4 121 17.4 16.7 105 LOOMIS PARK 8240 -M 17.0 * 21.2 20.4 105 NEW FORK LAKE 8340 13.4 10.9 124 12.9 15.5 83 SNIDER BASIN 8250 18.7 15.5 121 18.7 16.4 115 SPRING CREEK DIVIDE 9000 32.4 29.4 111 30.0 29.4 103 TRIPLE PEAK 8500 31.4 26.9 117 32.0 33.3 97 ----- ----- Basin wide percent of average 109 98 LOWER GREEN RIVER HAMS FORK 7840 14.0 6.3 226 12.5 14.5 87 HEWINTA 9500 13.2 9.2 144 15.4 14.5 106 HICKERSON PARK 9150 6.1 6.8 92 10.5 10.9 97 HOLE-IN-ROCK 9150 6.8 6.3 107 11.0 10.9 102 INDIAN CREEK 9425 32.0 30.4 106 26.9 27.9 97 KELLEY R.S. 8180 17.7 17.7 100 20.0 20.2 100 STEEL CREEK PARK 10100 16.2 17.9 90 18.0 14.4 126 ----- ----- Basin wide percent of average 113 102 UPPER BEAR RIVER BUG LAKE 7950 23.9 20.2 119 21.9 21.0 104 HAYDEN FORK 9400 15.0 11.4 133 22.0 20.9 106 KELLEY R.S. 8180 17.7 17.7 100 20.0 20.2 100 LILY LAKE 9050 12.6 13.0 97 19.0 16.2 118 MONTE CRISTO 8960 27.2 29.4 93 28.0 27.7 102 SALT RIVER SUMMIT 7600 16.5 14.0 119 19.4 18.2 107 TRIAL LAKE 9960 22.2 26.0 86 23.4 25.9 90 ----- ----- Basin wide percent of average 103 103 ----------------------------------------------------------------------------- -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.