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 MONDAY: MARCH 15 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.7 16.7 148 25.4 21.3 119 COTTONWOOD CREEK 7600 24.0 21.6 111 26.4 23.8 111 GRANITE CREEK 6770 21.3 17.1 125 22.7 22.4 101 GRASSY LAKE 7265 41.3 33.0 125 38.7 35.0 111 GROS VENTRE SUMMIT 8775 15.2 14.4 106 14.7 15.1 97 LEWIS LAKE DIVIDE 7860 40.6 32.8 124 -M 35.6 * PHILLIPS BENCH 8200 31.6 27.0 117 -M 28.1 * SALT RIVER SUMMIT 7600 15.5 13.3 117 17.7 16.1 110 SNAKE RIVER STATION 6920 22.2 17.7 125 25.0 24.6 102 SPRING CREEK DIVIDE 9000 27.9 25.8 108 26.8 25.9 103 THUMB DIVIDE 7980 -M 15.8 * -M 19.9 * TOGWOTEE PASS 9580 -M 22.9 * 27.5 26.6 103 TWO OCEAN PLATEAU 9360 34.9 24.7 141 -M 29.4 * WILLOW CREEK 8450 32.6 28.4 115 35.4 30.5 116 ----- ----- Basin wide percent of average 122 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.3 21.8 116 22.9 16.5 139 BLACK BEAR 7950 48.8 35.2 139 -M 37.1 * CANYON 7940 17.6 11.9 148 18.3 13.1 140 FISHER CREEK 9100 39.0 33.1 118 -M 33.6 * MADISON PLATEAU 7750 -M 22.7 * -M 24.0 * NORTHEAST ENTRANCE 7350 12.3 8.8 140 13.9 11.0 126 PARKER PEAK 9400 22.3 20.0 112 -M 14.3 * SYLVAN LAKE 8420 24.5 20.4 120 26.2 17.7 148 THUMB DIVIDE 7980 -M 15.8 * -M 19.9 * TWO OCEAN PLATEAU 9360 34.9 24.7 141 -M 29.4 * WHISKEY CREEK 6800 20.1 16.0 126 -M 19.9 * WHITE MILL 8700 27.1 23.5 115 24.3 26.0 93 WOLVERINE 7650 13.9 11.0 126 12.4 11.8 105 ----- ----- Basin wide percent of average 126 123* WIND RIVER BURROUGHS CREEK 8750 16.4 14.2 115 17.7 15.2 116 COLD SPRINGS 9630 9.1 7.7 118 11.0 9.4 117 DEER PARK 9700 15.8 -M * 20.7 -M * HOBBS PARK 10100 16.5 13.5 122 14.7 12.6 117 LITTLE WARM 9620 13.3 10.4 128 14.5 11.9 122 SOUTH PASS 9040 16.8 15.2 111 17.9 15.3 117 ST. LAWRENCE ALT 8620 6.7 7.0 96 9.5 9.0 106 TOGWOTEE PASS 9580 -M 22.9 * 27.5 26.6 103 TOWNSEND CREEK 8700 9.1 9.0 101 11.9 11.0 108 ----- ----- Basin wide percent of average 114 112 BIGHORN BASIN BALD MTN. 9375 19.0 18.8 101 17.7 15.6 113 BEAR TRAP MEADOW 7900 6.9 6.5 106 9.0 7.2 125 BLACKWATER 9780 29.1 20.2 144 24.0 16.5 145 BONE SPRINGS DIV 9350 15.4 14.9 103 15.3 13.2 116 EVENING STAR 9200 32.4 24.8 131 -M 20.7 * GRAVE SPRINGS 8550 8.0 8.5 94 10.5 8.4 125 KIRWIN 9550 12.0 9.0 133 13.8 9.6 144 MARQUETTE 8760 8.0 7.3 110 8.8 8.2 107 MIDDLE POWDER 7760 10.4 10.9 95 15.0 10.4 144 OWL CREEK 8975 5.9 4.1 144 6.6 5.5 120 POWDER RIVER PASS 9480 12.3 9.9 124 14.6 10.3 142 SHELL CREEK 9580 15.9 13.8 115 14.6 11.7 125 SYLVAN LAKE 8420 24.5 20.4 120 26.2 17.7 148 SYLVAN ROAD 8120 16.5 12.3 134 18.6 14.8 126 TIMBER CREEK 7950 4.8 5.6 86 6.4 6.0 107 YOUNTS PEAK 8350 20.4 16.0 128 18.2 15.2 120 ----- ----- Basin wide percent of average 119 129 SHOSHONE RIVER BLACKWATER 9780 29.1 20.2 144 24.0 16.5 145 EVENING STAR 9200 32.4 24.8 131 -M 20.7 * KIRWIN 9550 12.0 9.0 133 13.8 9.6 144 MARQUETTE 8760 8.0 7.3 110 8.8 8.2 107 SYLVAN LAKE 8420 24.5 20.4 120 26.2 17.7 148 SYLVAN ROAD 8120 16.5 12.3 134 18.6 14.8 126 YOUNTS PEAK 8350 20.4 16.0 128 18.2 15.2 120 ----- ----- Basin wide percent of average 130 134 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 6.5 106 9.0 7.2 125 BIG GOOSE 7990 6.2 -M * 9.3 -M * BONE SPRINGS DIV 9350 15.4 14.9 103 15.3 13.2 116 BURGESS JUNCTION 7880 8.3 10.7 78 10.0 9.9 101 CLOUD PEAK RESERVOIR 9860 14.3 13.0 110 12.8 11.7 109 DOME LAKE 8880 6.8 12.5 54 10.4 11.7 89 GRAVE SPRINGS 8550 8.0 8.5 94 10.5 8.4 125 HANSEN SAWMILL 8760 5.7 6.5 88 7.8 6.9 113 MIDDLE POWDER 7760 10.4 10.9 95 15.0 10.4 144 POWDER RIVER PASS 9480 12.3 9.9 124 14.6 10.3 142 SUCKER CREEK 8880 10.0 10.9 92 12.5 11.7 107 TIE CREEK 6870 3.7 -M * 8.0 9.5 84 ----- ----- Basin wide percent of average 94 114 BELLE FOURCHE BLIND PARK 6890 7.9 10.1 78 14.8 8.7 170 NORTH RAPID CREEK 6130 5.8 -M * 12.6 -M * WARREN PEAK 6520 10.8 10.1 107 13.9 7.0 199 ----- ----- Basin wide percent of average 93 183 UPPER N. PLATTE RIVER COLUMBINE 9400 20.4 23.4 87 21.0 22.3 94 DIVIDE PEAK 8800 17.5 18.7 94 22.6 20.6 110 ELK RIVER 8700 18.0 18.4 98 20.5 17.2 119 JOE WRIGHT 10120 19.4 19.6 99 25.1 22.4 112 NORTH FRENCH CREEK 10100 27.4 22.9 120 27.2 21.0 130 OLD BATTLE 10000 26.2 28.7 91 33.2 27.1 123 SOUTH BRUSH CREEK 8400 10.3 11.2 92 18.0 14.4 125 TOWER 10500 41.0 41.2 100 36.4 32.8 111 WEBBER SPRINGS 9200 18.0 24.9 72 24.1 22.7 106 WILLOW CREEK PASS 9540 11.0 10.5 105 11.3 11.1 102 ----- ----- Basin wide percent of average 95 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.8 22.6 79 20.8 17.3 120 CASPER MTN. 7900 10.7 13.9 77 15.5 12.2 127 DEADMAN HILL 10220 15.5 15.0 103 16.6 14.7 113 DEER PARK 9700 15.8 -M * 20.7 -M * LAPRELE CREEK 8320 -M 9.4 * 13.7 10.3 133 RENO HILL 8400 12.8 12.3 104 17.5 16.7 105 ROACH 9700 14.4 15.6 92 18.4 19.0 97 SAND LAKE 10080 31.6 29.8 106 26.5 18.2 146 SOUTH PASS 9040 16.8 15.2 111 17.9 15.3 117 WINDY PEAK 7840 6.4 7.6 84 12.4 8.2 151 ----- ----- Basin wide percent of average 95 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.9 10.8 119 16.3 13.8 118 DIVIDE PEAK 8800 17.5 18.7 94 22.6 20.6 110 OLD BATTLE 10000 26.2 28.7 91 33.2 27.1 123 SANDSTONE RS 8150 12.5 13.6 92 19.0 16.8 113 WHISKEY PARK 8950 25.1 26.3 95 27.6 25.1 110 ----- ----- Basin wide percent of average 96 115 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.7 13.4 117 14.5 15.4 94 BLIND BULL SUM 8650 27.6 27.1 102 21.4 22.6 95 EAST RIM DIVIDE 7930 13.2 13.2 100 13.5 14.5 93 ELKHART PARK G.S. 9400 13.3 12.8 104 13.7 15.2 90 GROS VENTRE SUMMIT 8775 15.2 14.4 106 14.7 15.1 97 KENDALL R.S. 7740 14.7 14.4 102 15.4 14.8 104 LOOMIS PARK 8240 -M 16.5 * 19.3 17.9 108 NEW FORK LAKE 8340 11.9 10.7 111 11.7 13.8 85 SNIDER BASIN 8250 16.3 14.0 116 16.1 14.5 111 SPRING CREEK DIVIDE 9000 27.9 25.8 108 26.8 25.9 103 TRIPLE PEAK 8500 27.0 23.8 113 27.5 29.6 93 ----- ----- Basin wide percent of average 108 98 LOWER GREEN RIVER HAMS FORK 7840 13.8 11.9 116 10.7 12.7 84 HEWINTA 9500 11.2 10.0 112 13.5 11.5 117 HICKERSON PARK 9150 6.7 5.8 116 9.3 8.2 113 HOLE-IN-ROCK 9150 6.6 5.5 120 9.4 8.2 115 INDIAN CREEK 9425 27.9 26.1 107 22.9 24.4 94 KELLEY R.S. 8180 16.3 15.9 103 17.8 17.9 99 STEEL CREEK PARK 10100 13.8 14.3 97 15.6 11.4 137 ----- ----- Basin wide percent of average 108 105 UPPER BEAR RIVER BUG LAKE 7950 21.0 18.9 111 18.7 17.6 106 HAYDEN FORK 9400 15.7 15.4 102 19.6 17.0 115 KELLEY R.S. 8180 16.3 15.9 103 17.8 17.9 99 LILY LAKE 9050 13.0 11.8 110 17.1 13.1 131 MONTE CRISTO 8960 25.0 26.4 95 24.8 23.0 108 SALT RIVER SUMMIT 7600 15.5 13.3 117 17.7 16.1 110 TRIAL LAKE 9960 20.0 23.7 84 20.6 21.6 95 ----- ----- Basin wide percent of average 101 108 ----------------------------------------------------------------------------- -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.