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 10 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.4 16.3 150 24.7 20.9 118 COTTONWOOD CREEK 7600 23.6 20.5 115 25.3 23.3 109 GRANITE CREEK 6770 21.0 16.5 127 22.4 21.9 102 GRASSY LAKE 7265 40.5 31.8 127 38.4 34.1 113 GROS VENTRE SUMMIT 8775 15.0 13.9 108 14.7 14.8 99 LEWIS LAKE DIVIDE 7860 40.4 31.6 128 -M 34.7 * PHILLIPS BENCH 8200 31.4 26.0 121 -M 27.4 * SALT RIVER SUMMIT 7600 15.1 12.9 117 17.3 15.7 110 SNAKE RIVER STATION 6920 21.8 17.2 127 24.8 23.9 104 SPRING CREEK DIVIDE 9000 27.4 24.9 110 25.7 25.3 102 THUMB DIVIDE 7980 22.5 15.3 147 21.3 19.5 109 TOGWOTEE PASS 9580 -M 22.2 * 26.9 25.9 104 TWO OCEAN PLATEAU 9360 34.6 23.8 145 -M 28.8 * WILLOW CREEK 8450 31.5 27.5 115 34.4 29.8 115 ----- ----- Basin wide percent of average 126 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.0 21.1 118 22.4 16.0 140 BLACK BEAR 7950 48.5 34.0 143 -M 35.9 * CANYON 7940 17.5 11.5 152 18.1 12.8 141 FISHER CREEK 9100 39.0 32.1 121 -M 32.6 * MADISON PLATEAU 7750 -M 22.0 * -M 23.2 * NORTHEAST ENTRANCE 7350 12.1 8.6 141 13.7 10.7 128 PARKER PEAK 9400 22.1 19.3 115 -M 13.9 * SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152 THUMB DIVIDE 7980 22.5 15.3 147 21.3 19.5 109 TWO OCEAN PLATEAU 9360 34.6 23.8 145 -M 28.8 * WHISKEY CREEK 6800 20.1 15.5 130 -M 19.2 * WHITE MILL 8700 27.0 22.7 119 24.0 25.2 95 WOLVERINE 7650 13.7 10.7 128 12.3 11.5 107 ----- ----- Basin wide percent of average 131 122 WIND RIVER BURROUGHS CREEK 8750 16.2 13.8 117 17.6 14.8 119 COLD SPRINGS 9630 9.1 7.5 121 10.9 9.0 121 DEER PARK 9700 15.5 -M * 20.4 -M * HOBBS PARK 10100 15.9 13.0 122 14.4 12.1 119 LITTLE WARM 9620 13.0 10.0 130 14.4 11.5 125 SOUTH PASS 9040 16.5 14.8 111 17.4 14.8 118 ST. LAWRENCE ALT 8620 6.5 6.7 97 9.4 8.6 109 TOGWOTEE PASS 9580 -M 22.2 * 26.9 25.9 104 TOWNSEND CREEK 8700 8.6 8.6 100 11.5 10.6 108 ----- ----- Basin wide percent of average 115 114 BIGHORN BASIN BALD MTN. 9375 18.7 18.2 103 17.2 15.1 114 BEAR TRAP MEADOW 7900 6.9 6.3 110 8.8 6.9 128 BLACKWATER 9780 28.7 19.4 148 23.8 16.0 149 BONE SPRINGS DIV 9350 14.8 14.4 103 14.5 12.7 114 EVENING STAR 9200 31.9 24.0 133 -M 20.1 * GRAVE SPRINGS 8550 7.6 8.2 93 10.2 8.0 128 KIRWIN 9550 11.8 8.7 136 13.4 9.2 146 MARQUETTE 8760 7.7 7.0 110 8.4 7.8 108 MIDDLE POWDER 7760 9.4 10.5 90 14.2 10.0 142 OWL CREEK 8975 5.7 4.0 143 6.3 5.3 119 POWDER RIVER PASS 9480 12.1 9.5 127 14.0 10.0 140 SHELL CREEK 9580 15.5 13.4 116 14.2 11.3 126 SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152 SYLVAN ROAD 8120 16.4 11.9 138 18.6 14.4 129 TIMBER CREEK 7950 4.6 5.4 85 6.3 5.7 111 YOUNTS PEAK 8350 20.4 15.6 131 17.9 14.7 122 ----- ----- Basin wide percent of average 121 130 SHOSHONE RIVER BLACKWATER 9780 28.7 19.4 148 23.8 16.0 149 EVENING STAR 9200 31.9 24.0 133 -M 20.1 * KIRWIN 9550 11.8 8.7 136 13.4 9.2 146 MARQUETTE 8760 7.7 7.0 110 8.4 7.8 108 SYLVAN LAKE 8420 24.3 19.7 123 26.1 17.2 152 SYLVAN ROAD 8120 16.4 11.9 138 18.6 14.4 129 YOUNTS PEAK 8350 20.4 15.6 131 17.9 14.7 122 ----- ----- Basin wide percent of average 133 136 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 6.3 110 8.8 6.9 128 BIG GOOSE 7990 5.6 -M * 8.7 -M * BONE SPRINGS DIV 9350 14.8 14.4 103 14.5 12.7 114 BURGESS JUNCTION 7880 7.9 10.3 77 9.6 9.4 102 CLOUD PEAK RESERVOIR 9860 13.7 12.3 111 11.8 11.2 105 DOME LAKE 8880 7.0 12.1 58 9.5 11.2 85 GRAVE SPRINGS 8550 7.6 8.2 93 10.2 8.0 128 HANSEN SAWMILL 8760 5.6 6.2 90 7.8 6.6 118 MIDDLE POWDER 7760 9.4 10.5 90 14.2 10.0 142 POWDER RIVER PASS 9480 12.1 9.5 127 14.0 10.0 140 SUCKER CREEK 8880 9.5 10.5 90 11.7 11.3 104 TIE CREEK 6870 3.4 -M * 7.5 9.0 83 ----- ----- Basin wide percent of average 94 113 BELLE FOURCHE BLIND PARK 6890 7.7 9.7 79 14.6 8.3 176 NORTH RAPID CREEK 6130 5.5 -M * 12.2 -M * WARREN PEAK 6520 10.2 9.7 105 13.4 6.7 200 ----- ----- Basin wide percent of average 92 187 UPPER N. PLATTE RIVER COLUMBINE 9400 19.9 22.5 88 20.6 21.7 95 DIVIDE PEAK 8800 17.4 18.0 97 22.4 19.9 113 ELK RIVER 8700 17.4 17.8 98 20.3 16.6 122 JOE WRIGHT 10120 18.9 18.8 101 24.5 21.6 113 NORTH FRENCH CREEK 10100 26.9 22.0 122 27.2 20.2 135 OLD BATTLE 10000 25.9 27.8 93 32.7 26.2 125 SOUTH BRUSH CREEK 8400 10.7 10.6 101 17.9 13.9 129 TOWER 10500 40.5 39.8 102 35.8 31.8 113 WEBBER SPRINGS 9200 17.7 24.0 74 23.6 22.0 107 WILLOW CREEK PASS 9540 10.7 10.0 107 10.9 10.7 102 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.9 21.6 88 20.7 16.6 125 CASPER MTN. 7900 10.3 13.3 77 15.2 11.7 130 DEADMAN HILL 10220 15.5 14.5 107 16.2 14.1 115 DEER PARK 9700 15.5 -M * 20.4 -M * LAPRELE CREEK 8320 -M 9.0 * 13.5 9.9 136 RENO HILL 8400 12.5 11.8 106 17.1 15.9 108 ROACH 9700 14.6 15.0 97 18.0 18.4 98 SAND LAKE 10080 31.2 28.7 109 26.3 17.6 149 SOUTH PASS 9040 16.5 14.8 111 17.4 14.8 118 WINDY PEAK 7840 6.3 7.1 89 12.2 7.8 156 ----- ----- Basin wide percent of average 99 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.8 10.5 122 16.2 13.4 121 DIVIDE PEAK 8800 17.4 18.0 97 22.4 19.9 113 OLD BATTLE 10000 25.9 27.8 93 32.7 26.2 125 SANDSTONE RS 8150 12.5 13.1 95 18.9 16.3 116 WHISKEY PARK 8950 25.0 25.3 99 26.4 24.2 109 ----- ----- Basin wide percent of average 99 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.1 12.9 117 14.2 15.1 94 BLIND BULL SUM 8650 27.3 26.1 105 21.2 22.0 96 EAST RIM DIVIDE 7930 13.1 12.8 102 13.3 14.2 94 ELKHART PARK G.S. 9400 12.9 12.3 105 13.4 14.9 90 GROS VENTRE SUMMIT 8775 15.0 13.9 108 14.7 14.8 99 KENDALL R.S. 7740 15.0 13.7 109 15.2 14.5 105 LOOMIS PARK 8240 -M 15.9 * 19.1 17.5 109 NEW FORK LAKE 8340 11.8 10.4 113 11.3 13.5 84 SNIDER BASIN 8250 16.2 13.6 119 15.8 14.2 111 SPRING CREEK DIVIDE 9000 27.4 24.9 110 25.7 25.3 102 TRIPLE PEAK 8500 26.4 23.1 114 26.6 29.0 92 ----- ----- Basin wide percent of average 110 98 LOWER GREEN RIVER HAMS FORK 7840 13.8 11.4 121 10.5 12.4 85 HEWINTA 9500 10.8 9.5 114 13.0 11.0 118 HICKERSON PARK 9150 6.6 5.5 120 8.9 7.9 113 HOLE-IN-ROCK 9150 6.5 5.1 127 9.1 7.9 115 INDIAN CREEK 9425 27.2 25.0 109 22.3 23.7 94 KELLEY R.S. 8180 16.0 15.3 105 17.6 17.5 101 STEEL CREEK PARK 10100 13.3 13.7 97 15.3 11.0 139 ----- ----- Basin wide percent of average 110 106 UPPER BEAR RIVER BUG LAKE 7950 20.7 18.2 114 18.3 17.0 108 HAYDEN FORK 9400 15.3 14.8 103 18.4 16.3 113 KELLEY R.S. 8180 16.0 15.3 105 17.6 17.5 101 LILY LAKE 9050 12.8 11.4 112 16.8 12.6 133 MONTE CRISTO 8960 25.0 25.4 98 24.5 22.2 110 SALT RIVER SUMMIT 7600 15.1 12.9 117 17.3 15.7 110 TRIAL LAKE 9960 19.4 22.8 85 20.1 20.9 96 ----- ----- Basin wide percent of average 103 109 ----------------------------------------------------------------------------- -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.