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 SATURDAY: MARCH 6 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.0 16.1 149 24.4 20.5 119 COTTONWOOD CREEK 7600 22.8 19.6 116 25.2 22.8 111 GRANITE CREEK 6770 20.3 16.0 127 21.5 21.6 100 GRASSY LAKE 7265 39.5 30.8 128 38.0 33.4 114 GROS VENTRE SUMMIT 8775 14.3 13.4 107 14.1 14.5 97 LEWIS LAKE DIVIDE 7860 39.5 30.7 129 -M 33.9 * PHILLIPS BENCH 8200 30.4 25.2 121 25.2 26.8 94 SALT RIVER SUMMIT 7600 14.5 12.5 116 16.5 15.5 106 SNAKE RIVER STATION 6920 21.5 16.7 129 24.5 23.4 105 SPRING CREEK DIVIDE 9000 26.4 24.2 109 25.4 24.7 103 THUMB DIVIDE 7980 22.1 14.8 149 20.9 19.2 109 TOGWOTEE PASS 9580 -M 21.6 * 26.6 25.4 105 TWO OCEAN PLATEAU 9360 34.2 23.1 148 -M 28.3 * WILLOW CREEK 8450 30.1 26.7 113 34.0 29.3 116 ----- ----- Basin wide percent of average 126 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.6 20.6 119 21.9 15.6 140 BLACK BEAR 7950 47.5 33.0 144 -M 34.9 * CANYON 7940 17.0 11.1 153 17.7 12.5 142 FISHER CREEK 9100 38.2 31.3 122 -M 31.7 * MADISON PLATEAU 7750 -M 21.4 * 24.5 22.6 108 NORTHEAST ENTRANCE 7350 11.6 8.4 138 13.3 10.5 127 PARKER PEAK 9400 21.7 18.7 116 -M 13.5 * SYLVAN LAKE 8420 23.8 19.2 124 25.7 16.8 153 THUMB DIVIDE 7980 22.1 14.8 149 20.9 19.2 109 TWO OCEAN PLATEAU 9360 34.2 23.1 148 -M 28.3 * WHISKEY CREEK 6800 19.5 15.0 130 19.6 18.7 105 WHITE MILL 8700 26.3 22.0 120 23.2 24.6 94 WOLVERINE 7650 13.2 10.4 127 11.8 11.3 104 ----- ----- Basin wide percent of average 132 118 WIND RIVER BURROUGHS CREEK 8750 16.1 13.5 119 17.7 14.4 123 COLD SPRINGS 9630 8.7 7.3 119 10.6 8.8 120 DEER PARK 9700 15.1 -M * 20.3 -M * HOBBS PARK 10100 15.4 12.6 122 14.2 11.7 121 LITTLE WARM 9620 12.7 9.6 132 13.9 11.2 124 SOUTH PASS 9040 16.2 14.4 112 17.4 14.3 122 ST. LAWRENCE ALT 8620 6.3 6.5 97 9.3 8.4 111 TOGWOTEE PASS 9580 -M 21.6 * 26.6 25.4 105 TOWNSEND CREEK 8700 8.2 8.4 98 11.1 10.2 109 ----- ----- Basin wide percent of average 116 116 BIGHORN BASIN BALD MTN. 9375 18.3 17.6 104 16.5 14.6 113 BEAR TRAP MEADOW 7900 7.1 6.1 116 8.8 6.6 133 BLACKWATER 9780 28.0 18.8 149 23.0 15.7 146 BONE SPRINGS DIV 9350 14.1 13.9 101 13.5 12.2 111 EVENING STAR 9200 31.7 23.3 136 -M 19.6 * GRAVE SPRINGS 8550 7.3 7.9 92 10.1 7.8 129 KIRWIN 9550 -M 8.4 * 13.1 9.0 146 MARQUETTE 8760 7.0 6.8 103 7.6 7.5 101 MIDDLE POWDER 7760 9.2 10.1 91 13.4 9.6 140 OWL CREEK 8975 5.3 3.8 139 5.6 5.1 110 POWDER RIVER PASS 9480 11.7 9.2 127 12.9 9.7 133 SHELL CREEK 9580 15.1 13.0 116 13.8 11.0 125 SYLVAN LAKE 8420 23.8 19.2 124 25.7 16.8 153 SYLVAN ROAD 8120 16.3 11.6 141 18.5 14.0 132 TIMBER CREEK 7950 4.5 5.2 87 6.3 5.4 117 YOUNTS PEAK 8350 20.1 15.2 132 17.4 14.4 121 ----- ----- Basin wide percent of average 121 129 SHOSHONE RIVER BLACKWATER 9780 28.0 18.8 149 23.0 15.7 146 EVENING STAR 9200 31.7 23.3 136 -M 19.6 * KIRWIN 9550 -M 8.4 * 13.1 9.0 146 MARQUETTE 8760 7.0 6.8 103 7.6 7.5 101 SYLVAN LAKE 8420 23.8 19.2 124 25.7 16.8 153 SYLVAN ROAD 8120 16.3 11.6 141 18.5 14.0 132 YOUNTS PEAK 8350 20.1 15.2 132 17.4 14.4 121 ----- ----- Basin wide percent of average 134 136 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.1 6.1 116 8.8 6.6 133 BIG GOOSE 7990 5.4 -M * 8.3 -M * BONE SPRINGS DIV 9350 14.1 13.9 101 13.5 12.2 111 BURGESS JUNCTION 7880 7.4 10.1 73 9.4 9.1 103 CLOUD PEAK RESERVOIR 9860 13.1 11.8 111 10.9 10.8 101 DOME LAKE 8880 6.8 11.7 58 9.7 10.9 89 GRAVE SPRINGS 8550 7.3 7.9 92 10.1 7.8 129 HANSEN SAWMILL 8760 4.8 6.0 80 7.4 6.3 117 MIDDLE POWDER 7760 9.2 10.1 91 13.4 9.6 140 POWDER RIVER PASS 9480 11.7 9.2 127 12.9 9.7 133 SUCKER CREEK 8880 9.1 10.1 90 10.8 10.9 99 TIE CREEK 6870 3.3 -M * 7.3 8.7 84 ----- ----- Basin wide percent of average 93 111 BELLE FOURCHE BLIND PARK 6890 7.5 9.5 79 14.4 8.0 180 NORTH RAPID CREEK 6130 5.3 -M * 11.8 -M * WARREN PEAK 6520 10.0 9.5 105 13.2 6.5 203 ----- ----- Basin wide percent of average 92 190 UPPER N. PLATTE RIVER COLUMBINE 9400 18.9 21.9 86 19.4 21.1 92 DIVIDE PEAK 8800 16.9 17.5 97 21.7 19.4 112 ELK RIVER 8700 16.8 17.3 97 19.6 16.1 122 JOE WRIGHT 10120 17.9 18.2 98 23.9 21.0 114 NORTH FRENCH CREEK 10100 26.1 21.3 123 26.1 19.6 133 OLD BATTLE 10000 24.9 27.1 92 31.5 25.4 124 SOUTH BRUSH CREEK 8400 10.9 10.0 109 17.3 13.4 129 TOWER 10500 39.3 38.7 102 35.4 31.0 114 WEBBER SPRINGS 9200 16.9 23.2 73 22.9 21.4 107 WILLOW CREEK PASS 9540 10.1 9.7 104 10.2 10.3 99 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.6 20.9 89 20.1 16.1 125 CASPER MTN. 7900 9.7 12.9 75 14.5 11.3 128 DEADMAN HILL 10220 14.2 14.0 101 15.8 13.6 116 DEER PARK 9700 15.1 -M * 20.3 -M * LAPRELE CREEK 8320 -M 8.8 * 13.1 9.5 138 RENO HILL 8400 12.3 11.3 109 16.5 15.3 108 ROACH 9700 15.0 14.6 103 17.4 17.9 97 SAND LAKE 10080 30.1 27.9 108 25.6 17.1 150 SOUTH PASS 9040 16.2 14.4 112 17.4 14.3 122 WINDY PEAK 7840 5.7 6.7 85 11.6 7.5 155 ----- ----- Basin wide percent of average 99 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.9 10.2 126 15.9 13.0 122 DIVIDE PEAK 8800 16.9 17.5 97 21.7 19.4 112 OLD BATTLE 10000 24.9 27.1 92 31.5 25.4 124 SANDSTONE RS 8150 11.9 12.7 94 18.4 15.9 116 WHISKEY PARK 8950 24.1 24.6 98 25.5 23.4 109 ----- ----- Basin wide percent of average 98 116 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.4 12.6 114 13.5 14.8 91 BLIND BULL SUM 8650 26.7 25.3 106 20.7 21.6 96 EAST RIM DIVIDE 7930 12.6 12.4 102 13.0 13.9 94 ELKHART PARK G.S. 9400 12.4 11.9 104 12.8 14.6 88 GROS VENTRE SUMMIT 8775 14.3 13.4 107 14.1 14.5 97 KENDALL R.S. 7740 14.6 13.2 111 14.6 14.2 103 LOOMIS PARK 8240 -M 15.5 * 18.9 17.2 110 NEW FORK LAKE 8340 11.4 10.2 112 10.8 13.2 82 SNIDER BASIN 8250 15.4 13.2 117 15.1 13.9 109 SPRING CREEK DIVIDE 9000 26.4 24.2 109 25.4 24.7 103 TRIPLE PEAK 8500 25.6 22.5 114 25.6 28.5 90 ----- ----- Basin wide percent of average 109 97 LOWER GREEN RIVER HAMS FORK 7840 13.2 11.0 120 10.1 12.2 83 HEWINTA 9500 10.2 9.0 113 12.7 10.7 119 HICKERSON PARK 9150 6.1 5.3 115 8.4 7.6 111 HOLE-IN-ROCK 9150 6.2 4.9 127 8.7 7.6 114 INDIAN CREEK 9425 26.3 24.0 110 21.1 23.2 91 KELLEY R.S. 8180 15.2 14.8 103 16.7 17.2 97 STEEL CREEK PARK 10100 12.6 13.2 95 14.6 10.7 136 ----- ----- Basin wide percent of average 109 103 UPPER BEAR RIVER BUG LAKE 7950 19.8 17.7 112 17.6 16.5 107 HAYDEN FORK 9400 14.2 14.3 99 17.5 15.8 111 KELLEY R.S. 8180 15.2 14.8 103 16.7 17.2 97 LILY LAKE 9050 12.0 11.0 109 16.0 12.2 131 MONTE CRISTO 8960 23.9 24.5 98 23.6 21.6 109 SALT RIVER SUMMIT 7600 14.5 12.5 116 16.5 15.5 106 TRIAL LAKE 9960 18.3 22.1 83 19.1 20.4 94 ----- ----- Basin wide percent of average 101 107 ----------------------------------------------------------------------------- -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.