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 TUESDAY: MARCH 9 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.3 16.3 149 24.6 20.8 118 COTTONWOOD CREEK 7600 23.0 20.3 113 25.3 23.2 109 GRANITE CREEK 6770 20.5 16.4 125 21.8 21.8 100 GRASSY LAKE 7265 40.4 31.5 128 38.2 33.9 113 GROS VENTRE SUMMIT 8775 14.6 13.8 106 14.3 14.7 97 LEWIS LAKE DIVIDE 7860 40.1 31.4 128 -M 34.5 * PHILLIPS BENCH 8200 30.7 25.8 119 -M 27.3 * SALT RIVER SUMMIT 7600 14.6 12.8 114 16.6 15.7 106 SNAKE RIVER STATION 6920 21.8 17.1 127 24.7 23.8 104 SPRING CREEK DIVIDE 9000 26.6 24.7 108 25.5 25.1 102 THUMB DIVIDE 7980 -M 15.2 * -M 19.4 * TOGWOTEE PASS 9580 -M 22.0 * 26.8 25.8 104 TWO OCEAN PLATEAU 9360 34.5 23.6 146 -M 28.7 * WILLOW CREEK 8450 30.6 27.3 112 34.3 29.7 115 ----- ----- Basin wide percent of average 123 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.0 21.0 119 22.3 15.9 140 BLACK BEAR 7950 48.4 33.7 144 -M 35.7 * CANYON 7940 17.4 11.4 153 18.0 12.7 142 FISHER CREEK 9100 38.7 31.9 121 -M 32.4 * MADISON PLATEAU 7750 -M 21.8 * -M 23.1 * NORTHEAST ENTRANCE 7350 11.9 8.5 140 13.6 10.6 128 PARKER PEAK 9400 22.0 19.1 115 -M 13.8 * SYLVAN LAKE 8420 24.3 19.6 124 26.0 17.1 152 THUMB DIVIDE 7980 -M 15.2 * -M 19.4 * TWO OCEAN PLATEAU 9360 34.5 23.6 146 -M 28.7 * WHISKEY CREEK 6800 19.8 15.4 129 -M 19.1 * WHITE MILL 8700 26.9 22.5 120 23.9 25.1 95 WOLVERINE 7650 13.6 10.6 128 12.2 11.5 106 ----- ----- Basin wide percent of average 130 125* WIND RIVER BURROUGHS CREEK 8750 16.2 13.7 118 17.6 14.7 120 COLD SPRINGS 9630 8.9 7.4 120 10.8 9.0 120 DEER PARK 9700 15.2 -M * 20.2 -M * HOBBS PARK 10100 15.9 12.9 123 14.4 12.0 120 LITTLE WARM 9620 13.0 9.9 131 14.2 11.4 125 SOUTH PASS 9040 16.3 14.7 111 17.4 14.7 118 ST. LAWRENCE ALT 8620 6.4 6.7 96 9.4 8.6 109 TOGWOTEE PASS 9580 -M 22.0 * 26.8 25.8 104 TOWNSEND CREEK 8700 8.6 8.6 100 11.5 10.5 110 ----- ----- Basin wide percent of average 115 114 BIGHORN BASIN BALD MTN. 9375 18.6 18.0 103 17.0 15.0 113 BEAR TRAP MEADOW 7900 7.0 6.2 113 8.8 6.8 129 BLACKWATER 9780 28.6 19.3 148 23.7 15.9 149 BONE SPRINGS DIV 9350 14.5 14.3 101 14.6 12.6 116 EVENING STAR 9200 32.1 23.8 135 -M 20.0 * GRAVE SPRINGS 8550 7.4 8.1 91 10.2 8.0 128 KIRWIN 9550 11.5 8.6 134 13.4 9.2 146 MARQUETTE 8760 7.3 7.0 104 8.1 7.7 105 MIDDLE POWDER 7760 9.2 10.4 88 14.3 9.9 144 OWL CREEK 8975 5.6 3.9 144 6.1 5.2 117 POWDER RIVER PASS 9480 11.8 9.4 126 14.0 9.9 141 SHELL CREEK 9580 15.3 13.3 115 14.2 11.2 127 SYLVAN LAKE 8420 24.3 19.6 124 26.0 17.1 152 SYLVAN ROAD 8120 16.5 11.8 140 18.7 14.3 131 TIMBER CREEK 7950 4.6 5.3 87 6.3 5.6 113 YOUNTS PEAK 8350 20.3 15.5 131 17.8 14.6 122 ----- ----- Basin wide percent of average 121 131 SHOSHONE RIVER BLACKWATER 9780 28.6 19.3 148 23.7 15.9 149 EVENING STAR 9200 32.1 23.8 135 -M 20.0 * KIRWIN 9550 11.5 8.6 134 13.4 9.2 146 MARQUETTE 8760 7.3 7.0 104 8.1 7.7 105 SYLVAN LAKE 8420 24.3 19.6 124 26.0 17.1 152 SYLVAN ROAD 8120 16.5 11.8 140 18.7 14.3 131 YOUNTS PEAK 8350 20.3 15.5 131 17.8 14.6 122 ----- ----- Basin wide percent of average 133 137 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.0 6.2 113 8.8 6.8 129 BIG GOOSE 7990 5.5 -M * 8.6 -M * BONE SPRINGS DIV 9350 14.5 14.3 101 14.6 12.6 116 BURGESS JUNCTION 7880 7.7 10.3 75 9.5 9.3 102 CLOUD PEAK RESERVOIR 9860 13.3 12.2 109 11.4 11.1 103 DOME LAKE 8880 6.9 12.0 58 10.1 11.1 91 GRAVE SPRINGS 8550 7.4 8.1 91 10.2 8.0 128 HANSEN SAWMILL 8760 5.1 6.2 82 7.4 6.5 114 MIDDLE POWDER 7760 9.2 10.4 88 14.3 9.9 144 POWDER RIVER PASS 9480 11.8 9.4 126 14.0 9.9 141 SUCKER CREEK 8880 9.4 10.4 90 11.7 11.2 104 TIE CREEK 6870 3.4 -M * 7.4 8.9 83 ----- ----- Basin wide percent of average 93 113 BELLE FOURCHE BLIND PARK 6890 7.5 9.7 77 14.4 8.2 176 NORTH RAPID CREEK 6130 5.4 -M * 12.0 -M * WARREN PEAK 6520 10.1 9.7 104 13.3 6.7 199 ----- ----- Basin wide percent of average 91 186 UPPER N. PLATTE RIVER COLUMBINE 9400 19.5 22.4 87 20.0 21.5 93 DIVIDE PEAK 8800 17.2 17.9 96 22.4 19.8 113 ELK RIVER 8700 17.2 17.7 97 20.2 16.5 122 JOE WRIGHT 10120 18.7 18.7 100 24.5 21.4 114 NORTH FRENCH CREEK 10100 26.5 21.8 122 26.8 20.1 133 OLD BATTLE 10000 25.3 27.6 92 32.2 26.0 124 SOUTH BRUSH CREEK 8400 10.8 10.4 104 17.8 13.8 129 TOWER 10500 40.1 39.5 102 35.8 31.6 113 WEBBER SPRINGS 9200 17.2 23.8 72 23.1 21.9 105 WILLOW CREEK PASS 9540 10.5 9.9 106 10.8 10.6 102 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.6 21.4 87 20.3 16.5 123 CASPER MTN. 7900 10.0 13.2 76 14.8 11.6 128 DEADMAN HILL 10220 15.2 14.4 106 16.0 14.0 114 DEER PARK 9700 15.2 -M * 20.2 -M * LAPRELE CREEK 8320 -M 9.0 * 13.3 9.8 136 RENO HILL 8400 12.4 11.7 106 16.9 15.8 107 ROACH 9700 14.7 14.9 99 17.9 18.3 98 SAND LAKE 10080 30.7 28.5 108 25.9 17.5 148 SOUTH PASS 9040 16.3 14.7 111 17.4 14.7 118 WINDY PEAK 7840 5.9 7.0 84 12.0 7.7 156 ----- ----- Basin wide percent of average 98 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.8 10.4 123 16.1 13.3 121 DIVIDE PEAK 8800 17.2 17.9 96 22.4 19.8 113 OLD BATTLE 10000 25.3 27.6 92 32.2 26.0 124 SANDSTONE RS 8150 12.1 13.0 93 18.6 16.2 115 WHISKEY PARK 8950 24.6 25.1 98 26.4 24.0 110 ----- ----- Basin wide percent of average 98 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.9 12.8 116 13.8 15.0 92 BLIND BULL SUM 8650 27.1 25.9 105 20.9 21.9 95 EAST RIM DIVIDE 7930 12.8 12.7 101 13.1 14.1 93 ELKHART PARK G.S. 9400 12.6 12.2 103 13.0 14.8 88 GROS VENTRE SUMMIT 8775 14.6 13.8 106 14.3 14.7 97 KENDALL R.S. 7740 14.7 13.6 108 14.9 14.4 103 LOOMIS PARK 8240 -M 15.8 * 18.9 17.4 109 NEW FORK LAKE 8340 11.6 10.4 112 11.1 13.4 83 SNIDER BASIN 8250 15.6 13.5 116 15.4 14.1 109 SPRING CREEK DIVIDE 9000 26.6 24.7 108 25.5 25.1 102 TRIPLE PEAK 8500 25.9 22.9 113 26.1 28.9 90 ----- ----- Basin wide percent of average 109 96 LOWER GREEN RIVER HAMS FORK 7840 13.4 11.3 119 10.2 12.4 82 HEWINTA 9500 10.6 9.4 113 12.9 10.9 118 HICKERSON PARK 9150 6.4 5.5 116 9.0 7.8 115 HOLE-IN-ROCK 9150 6.4 5.1 125 9.1 7.8 117 INDIAN CREEK 9425 26.8 24.7 109 21.5 23.6 91 KELLEY R.S. 8180 15.5 15.2 102 16.9 17.4 97 STEEL CREEK PARK 10100 13.0 13.6 96 14.9 10.9 137 ----- ----- Basin wide percent of average 109 104 UPPER BEAR RIVER BUG LAKE 7950 20.2 18.1 112 18.0 16.9 107 HAYDEN FORK 9400 14.5 14.7 99 18.2 16.2 112 KELLEY R.S. 8180 15.5 15.2 102 16.9 17.4 97 LILY LAKE 9050 12.3 11.3 109 16.3 12.5 130 MONTE CRISTO 8960 24.2 25.2 96 23.8 22.1 108 SALT RIVER SUMMIT 7600 14.6 12.8 114 16.6 15.7 106 TRIAL LAKE 9960 18.8 22.6 83 19.5 20.8 94 ----- ----- Basin wide percent of average 100 106 ----------------------------------------------------------------------------- -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.