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: MARCH 3 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.7 15.8 150 24.3 20.3 120 COTTONWOOD CREEK 7600 22.5 18.9 119 25.1 22.5 112 GRANITE CREEK 6770 19.9 15.6 128 21.4 21.3 100 GRASSY LAKE 7265 39.1 30.1 130 37.8 32.9 115 GROS VENTRE SUMMIT 8775 14.2 13.1 108 14.0 14.3 98 LEWIS LAKE DIVIDE 7860 38.9 30.0 130 -M 33.4 * PHILLIPS BENCH 8200 29.8 24.6 121 25.3 26.4 96 SALT RIVER SUMMIT 7600 14.5 12.3 118 16.6 15.2 109 SNAKE RIVER STATION 6920 -M 16.4 * -M 23.1 * SPRING CREEK DIVIDE 9000 26.2 23.7 111 25.5 24.4 105 THUMB DIVIDE 7980 -M 14.5 * -M 19.0 * TOGWOTEE PASS 9580 -M 21.1 * 26.4 25.0 106 TWO OCEAN PLATEAU 9360 33.8 22.6 150 -M 27.9 * WILLOW CREEK 8450 30.0 26.2 115 33.8 28.9 117 ----- ----- Basin wide percent of average 126 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.5 20.2 121 22.0 15.3 144 BLACK BEAR 7950 46.9 32.2 146 -M 34.2 * CANYON 7940 16.7 10.9 153 17.3 12.2 142 FISHER CREEK 9100 37.5 30.7 122 -M 31.1 * MADISON PLATEAU 7750 -M 20.9 * 24.6 22.1 111 NORTHEAST ENTRANCE 7350 11.5 8.2 140 13.3 10.3 129 PARKER PEAK 9400 21.3 18.3 116 -M 13.3 * SYLVAN LAKE 8420 23.6 18.8 126 25.4 16.5 154 THUMB DIVIDE 7980 -M 14.5 * -M 19.0 * TWO OCEAN PLATEAU 9360 33.8 22.6 150 -M 27.9 * WHISKEY CREEK 6800 19.1 14.7 130 19.6 18.3 107 WHITE MILL 8700 26.0 21.5 121 23.1 24.1 96 WOLVERINE 7650 13.2 10.2 129 12.0 11.1 108 ----- ----- Basin wide percent of average 132 121 WIND RIVER BURROUGHS CREEK 8750 16.1 13.3 121 17.5 14.2 123 COLD SPRINGS 9630 8.8 7.1 124 10.7 8.5 126 DEER PARK 9700 15.2 -M * 20.2 -M * HOBBS PARK 10100 15.7 12.3 128 14.2 11.4 125 LITTLE WARM 9620 12.7 9.4 135 13.9 11.0 126 SOUTH PASS 9040 16.2 14.2 114 17.3 14.0 124 ST. LAWRENCE ALT 8620 6.5 6.3 103 9.3 8.1 115 TOGWOTEE PASS 9580 -M 21.1 * 26.4 25.0 106 TOWNSEND CREEK 8700 8.7 8.1 107 11.5 10.0 115 ----- ----- Basin wide percent of average 120 118 BIGHORN BASIN BALD MTN. 9375 17.9 17.3 103 16.6 14.3 116 BEAR TRAP MEADOW 7900 6.4 6.0 107 8.4 6.4 131 BLACKWATER 9780 27.9 18.3 152 23.2 15.4 151 BONE SPRINGS DIV 9350 13.9 13.6 102 14.0 11.9 118 EVENING STAR 9200 31.6 22.8 139 28.3 19.2 147 GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129 KIRWIN 9550 11.3 8.2 138 13.3 8.7 153 MARQUETTE 8760 7.2 6.6 109 8.0 7.3 110 MIDDLE POWDER 7760 8.0 9.9 81 13.7 9.4 146 OWL CREEK 8975 5.5 3.8 145 6.0 5.0 120 POWDER RIVER PASS 9480 11.2 9.0 124 13.1 9.5 138 SHELL CREEK 9580 14.7 12.8 115 13.7 10.8 127 SYLVAN LAKE 8420 23.6 18.8 126 25.4 16.5 154 SYLVAN ROAD 8120 16.1 11.4 141 18.1 13.8 131 TIMBER CREEK 7950 4.6 5.0 92 6.3 5.2 121 YOUNTS PEAK 8350 19.9 15.0 133 17.5 14.1 124 ----- ----- Basin wide percent of average 122 134 SHOSHONE RIVER BLACKWATER 9780 27.9 18.3 152 23.2 15.4 151 EVENING STAR 9200 31.6 22.8 139 28.3 19.2 147 KIRWIN 9550 11.3 8.2 138 13.3 8.7 153 MARQUETTE 8760 7.2 6.6 109 8.0 7.3 110 SYLVAN LAKE 8420 23.6 18.8 126 25.4 16.5 154 SYLVAN ROAD 8120 16.1 11.4 141 18.1 13.8 131 YOUNTS PEAK 8350 19.9 15.0 133 17.5 14.1 124 ----- ----- Basin wide percent of average 136 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.4 6.0 107 8.4 6.4 131 BIG GOOSE 7990 5.1 -M * 8.0 -M * BONE SPRINGS DIV 9350 13.9 13.6 102 14.0 11.9 118 BURGESS JUNCTION 7880 7.1 9.8 72 9.0 8.8 102 CLOUD PEAK RESERVOIR 9860 12.7 11.4 111 10.8 10.5 103 DOME LAKE 8880 6.9 11.5 60 9.8 10.6 92 GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129 HANSEN SAWMILL 8760 4.6 5.8 79 7.0 6.1 115 MIDDLE POWDER 7760 8.0 9.9 81 13.7 9.4 146 POWDER RIVER PASS 9480 11.2 9.0 124 13.1 9.5 138 SUCKER CREEK 8880 8.8 9.9 89 10.9 10.7 102 TIE CREEK 6870 3.0 -M * 6.9 8.4 82 ----- ----- Basin wide percent of average 91 114 BELLE FOURCHE BLIND PARK 6890 7.1 9.2 77 14.1 7.8 181 NORTH RAPID CREEK 6130 5.1 -M * 11.5 -M * WARREN PEAK 6520 9.4 9.2 102 12.9 6.3 205 ----- ----- Basin wide percent of average 90 191 UPPER N. PLATTE RIVER COLUMBINE 9400 18.6 21.3 87 19.2 20.8 92 DIVIDE PEAK 8800 16.5 17.1 96 21.9 19.0 115 ELK RIVER 8700 16.3 16.9 96 19.6 15.7 125 JOE WRIGHT 10120 17.7 17.7 100 23.5 20.5 115 NORTH FRENCH CREEK 10100 25.5 20.8 123 25.9 19.2 135 OLD BATTLE 10000 24.3 26.6 91 31.1 24.9 125 SOUTH BRUSH CREEK 8400 10.9 9.7 112 17.0 13.1 130 TOWER 10500 38.4 37.9 101 34.7 30.4 114 WEBBER SPRINGS 9200 16.6 22.7 73 22.5 21.0 107 WILLOW CREEK PASS 9540 10.1 9.4 107 10.5 10.1 104 ----- ----- Basin wide percent of average 97 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.6 20.3 92 19.8 15.8 125 CASPER MTN. 7900 9.7 12.5 78 14.5 11.0 132 DEADMAN HILL 10220 14.7 13.7 107 15.1 13.2 114 DEER PARK 9700 15.2 -M * 20.2 -M * LAPRELE CREEK 8320 -M 8.5 * 12.7 9.3 137 RENO HILL 8400 11.8 11.0 107 16.4 14.9 110 ROACH 9700 14.5 14.2 102 17.0 17.5 97 SAND LAKE 10080 29.5 27.2 108 25.2 16.7 151 SOUTH PASS 9040 16.2 14.2 114 17.3 14.0 124 WINDY PEAK 7840 5.6 6.4 88 11.3 7.3 155 ----- ----- Basin wide percent of average 101 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 10.0 123 15.7 12.8 123 DIVIDE PEAK 8800 16.5 17.1 96 21.9 19.0 115 OLD BATTLE 10000 24.3 26.6 91 31.1 24.9 125 SANDSTONE RS 8150 11.6 12.4 94 18.1 15.6 116 WHISKEY PARK 8950 23.4 24.0 98 24.5 22.9 107 ----- ----- Basin wide percent of average 98 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.7 12.3 120 13.5 14.6 92 BLIND BULL SUM 8650 26.7 24.7 108 20.7 21.2 98 EAST RIM DIVIDE 7930 12.6 12.2 103 13.0 13.7 95 ELKHART PARK G.S. 9400 12.5 11.6 108 12.9 14.4 90 GROS VENTRE SUMMIT 8775 14.2 13.1 108 14.0 14.3 98 KENDALL R.S. 7740 14.6 12.8 114 14.7 14.0 105 LOOMIS PARK 8240 -M 15.1 * 18.7 17.0 110 NEW FORK LAKE 8340 11.5 10.0 115 11.0 13.0 85 SNIDER BASIN 8250 15.4 13.0 118 15.1 13.7 110 SPRING CREEK DIVIDE 9000 26.2 23.7 111 25.5 24.4 105 TRIPLE PEAK 8500 25.5 22.0 116 25.5 28.1 91 ----- ----- Basin wide percent of average 112 98 LOWER GREEN RIVER HAMS FORK 7840 13.1 10.7 122 10.0 12.0 83 HEWINTA 9500 10.0 8.7 115 12.3 10.4 118 HICKERSON PARK 9150 5.8 5.1 114 8.3 7.3 114 HOLE-IN-ROCK 9150 6.0 4.6 130 8.6 7.3 118 INDIAN CREEK 9425 26.2 23.4 112 21.3 22.8 93 KELLEY R.S. 8180 15.1 14.4 105 16.7 17.0 98 STEEL CREEK PARK 10100 12.6 12.8 98 14.4 10.5 137 ----- ----- Basin wide percent of average 111 105 UPPER BEAR RIVER BUG LAKE 7950 19.5 17.3 113 17.6 16.1 109 HAYDEN FORK 9400 13.8 13.9 99 17.6 15.5 114 KELLEY R.S. 8180 15.1 14.4 105 16.7 17.0 98 LILY LAKE 9050 11.7 10.8 108 15.6 11.9 131 MONTE CRISTO 8960 23.4 23.9 98 23.2 21.1 110 SALT RIVER SUMMIT 7600 14.5 12.3 118 16.6 15.2 109 TRIAL LAKE 9960 18.1 21.6 84 18.8 20.0 94 ----- ----- Basin wide percent of average 102 108 ----------------------------------------------------------------------------- -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.