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: FEBRUARY 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 18.6 13.5 138 -M 17.5 * COTTONWOOD CREEK 7600 17.5 15.5 113 20.0 18.9 106 GRANITE CREEK 6770 16.3 13.3 123 18.4 18.5 99 GRASSY LAKE 7265 30.4 27.4 111 30.4 28.4 107 GROS VENTRE SUMMIT 8775 12.5 11.3 111 12.2 12.4 98 LEWIS LAKE DIVIDE 7860 30.0 25.1 120 28.1 28.9 97 PHILLIPS BENCH 8200 24.3 21.1 115 22.9 22.8 100 SALT RIVER SUMMIT 7600 12.2 10.0 122 14.3 13.2 108 SNAKE RIVER STATION 6920 16.2 13.8 117 -M 20.0 * SPRING CREEK DIVIDE 9000 21.9 19.8 111 20.2 20.9 97 THUMB DIVIDE 7980 -M 12.4 * -M 16.4 * TOGWOTEE PASS 9580 -M 18.2 * 22.7 21.6 105 TWO OCEAN PLATEAU 9360 28.8 19.7 146 22.7 24.2 94 WILLOW CREEK 8450 24.5 22.8 107 28.2 24.7 114 ----- ----- Basin wide percent of average 119 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.8 17.3 120 18.8 13.1 144 BLACK BEAR 7950 38.3 26.9 142 -M 28.8 * CANYON 7940 14.5 9.1 159 15.2 10.6 143 FISHER CREEK 9100 31.3 26.2 119 -M 26.6 * MADISON PLATEAU 7750 -M 17.6 * 23.4 18.7 125 NORTHEAST ENTRANCE 7350 9.6 7.0 137 11.4 8.9 128 PARKER PEAK 9400 18.5 15.5 119 -M 11.3 * SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161 THUMB DIVIDE 7980 -M 12.4 * -M 16.4 * TWO OCEAN PLATEAU 9360 28.8 19.7 146 22.7 24.2 94 WHISKEY CREEK 6800 16.4 12.2 134 18.9 15.6 121 WHITE MILL 8700 20.6 18.4 112 18.6 20.7 90 WOLVERINE 7650 12.1 8.7 139 10.8 9.5 114 ----- ----- Basin wide percent of average 131 120 WIND RIVER BURROUGHS CREEK 8750 14.0 11.4 123 15.2 12.2 125 COLD SPRINGS 9630 8.1 6.2 131 9.7 7.4 131 DEER PARK 9700 13.6 -M * -M -M * HOBBS PARK 10100 13.9 10.6 131 13.0 9.8 133 LITTLE WARM 9620 11.2 7.8 144 12.3 9.5 129 SOUTH PASS 9040 14.6 12.2 120 15.7 11.8 133 ST. LAWRENCE ALT 8620 6.0 5.2 115 8.7 6.8 128 TOGWOTEE PASS 9580 -M 18.2 * 22.7 21.6 105 TOWNSEND CREEK 8700 7.8 6.8 115 10.3 8.4 123 ----- ----- Basin wide percent of average 126 123 BIGHORN BASIN BALD MTN. 9375 14.4 14.9 97 13.6 12.5 109 BEAR TRAP MEADOW 7900 4.5 5.2 87 7.0 5.7 123 BLACKWATER 9780 24.1 15.3 158 20.2 13.2 153 BONE SPRINGS DIV 9350 11.6 11.5 101 11.7 10.1 116 EVENING STAR 9200 27.0 19.5 138 27.1 16.5 164 GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118 KIRWIN 9550 10.4 7.0 149 11.9 7.4 161 MARQUETTE 8760 6.7 5.6 120 7.4 6.2 119 MIDDLE POWDER 7760 5.2 8.4 62 11.2 8.2 137 OWL CREEK 8975 5.3 3.1 171 5.8 4.2 138 POWDER RIVER PASS 9480 9.1 7.6 120 11.2 8.3 135 SHELL CREEK 9580 12.5 11.0 114 11.1 9.4 118 SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161 SYLVAN ROAD 8120 13.9 9.4 148 15.8 11.9 133 TIMBER CREEK 7950 4.1 4.1 100 5.9 4.5 131 YOUNTS PEAK 8350 17.4 13.0 134 15.4 12.1 127 ----- ----- Basin wide percent of average 121 136 SHOSHONE RIVER BLACKWATER 9780 24.1 15.3 158 20.2 13.2 153 EVENING STAR 9200 27.0 19.5 138 27.1 16.5 164 KIRWIN 9550 10.4 7.0 149 11.9 7.4 161 MARQUETTE 8760 6.7 5.6 120 7.4 6.2 119 SYLVAN LAKE 8420 20.9 16.1 130 22.9 14.2 161 SYLVAN ROAD 8120 13.9 9.4 148 15.8 11.9 133 YOUNTS PEAK 8350 17.4 13.0 134 15.4 12.1 127 ----- ----- Basin wide percent of average 140 148 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.5 5.2 87 7.0 5.7 123 BIG GOOSE 7990 4.2 -M * 7.0 -M * BONE SPRINGS DIV 9350 11.6 11.5 101 11.7 10.1 116 BURGESS JUNCTION 7880 5.9 8.2 72 7.7 7.6 101 CLOUD PEAK RESERVOIR 9860 10.7 9.0 119 9.4 8.8 107 DOME LAKE 8880 6.0 9.7 62 7.8 9.2 85 GRAVE SPRINGS 8550 5.0 6.5 77 7.9 6.7 118 HANSEN SAWMILL 8760 4.2 5.0 84 6.6 5.3 125 MIDDLE POWDER 7760 5.2 8.4 62 11.2 8.2 137 POWDER RIVER PASS 9480 9.1 7.6 120 11.2 8.3 135 SUCKER CREEK 8880 7.3 8.3 88 9.4 9.2 102 TIE CREEK 6870 2.4 -M * 6.1 7.2 85 ----- ----- Basin wide percent of average 88 111 BELLE FOURCHE BLIND PARK 6890 5.4 7.8 69 12.5 6.6 189 NORTH RAPID CREEK 6130 4.1 -M * 10.9 -M * WARREN PEAK 6520 6.0 7.8 77 10.9 5.5 198 ----- ----- Basin wide percent of average 73 193 UPPER N. PLATTE RIVER COLUMBINE 9400 15.2 17.5 87 16.6 17.7 94 DIVIDE PEAK 8800 14.5 14.5 100 20.0 16.9 118 ELK RIVER 8700 -M 14.0 * 17.9 13.5 133 JOE WRIGHT 10120 15.3 15.2 101 20.7 17.7 117 NORTH FRENCH CREEK 10100 21.7 17.4 125 -M 16.3 * OLD BATTLE 10000 21.1 22.4 94 27.5 21.0 131 SOUTH BRUSH CREEK 8400 5.7 7.8 73 15.2 11.4 133 TOWER 10500 31.7 32.4 98 30.4 26.0 117 WEBBER SPRINGS 9200 14.3 19.1 75 19.8 17.9 111 WILLOW CREEK PASS 9540 8.8 7.9 111 10.0 8.5 118 ----- ----- Basin wide percent of average 96 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.2 17.2 88 17.0 13.2 129 CASPER MTN. 7900 7.5 10.3 73 12.8 9.3 138 DEADMAN HILL 10220 13.9 11.9 117 14.0 11.2 125 DEER PARK 9700 13.6 -M * -M -M * LAPRELE CREEK 8320 1.7 7.2 24 10.6 8.1 131 RENO HILL 8400 9.2 9.1 101 13.6 12.4 110 ROACH 9700 13.3 12.0 111 15.6 15.2 103 SAND LAKE 10080 24.5 23.1 106 21.9 14.1 155 SOUTH PASS 9040 14.6 12.2 120 15.7 11.8 133 WINDY PEAK 7840 4.0 5.0 80 9.8 6.3 156 ----- ----- Basin wide percent of average 96 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.2 8.1 126 13.8 11.4 121 DIVIDE PEAK 8800 14.5 14.5 100 20.0 16.9 118 OLD BATTLE 10000 21.1 22.4 94 27.5 21.0 131 SANDSTONE RS 8150 9.6 10.3 93 16.3 14.0 116 WHISKEY PARK 8950 18.8 20.1 94 22.4 20.8 108 ----- ----- Basin wide percent of average 98 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.1 10.3 127 12.0 12.7 94 BLIND BULL SUM 8650 22.5 20.8 108 18.2 18.2 100 EAST RIM DIVIDE 7930 11.1 10.1 110 11.4 11.9 96 ELKHART PARK G.S. 9400 11.3 9.9 114 11.7 12.5 94 GROS VENTRE SUMMIT 8775 12.5 11.3 111 12.2 12.4 98 KENDALL R.S. 7740 12.7 10.7 119 12.9 12.1 107 LOOMIS PARK 8240 -M 12.8 * 16.4 14.8 111 NEW FORK LAKE 8340 10.3 8.5 121 10.4 11.3 92 SNIDER BASIN 8250 12.6 10.8 117 12.8 11.9 108 SPRING CREEK DIVIDE 9000 21.9 19.8 111 20.2 20.9 97 TRIPLE PEAK 8500 20.2 18.9 107 20.8 24.4 85 ----- ----- Basin wide percent of average 113 97 LOWER GREEN RIVER HAMS FORK 7840 9.9 8.9 111 8.6 10.5 82 HEWINTA 9500 6.9 6.9 100 9.6 9.0 107 HICKERSON PARK 9150 4.5 4.0 112 7.2 6.4 112 HOLE-IN-ROCK 9150 4.7 3.7 127 7.4 6.4 116 INDIAN CREEK 9425 21.9 19.6 112 18.4 19.7 93 KELLEY R.S. 8180 13.0 11.9 109 14.6 14.7 99 STEEL CREEK PARK 10100 9.9 10.5 94 11.6 9.1 127 ----- ----- Basin wide percent of average 108 102 UPPER BEAR RIVER BUG LAKE 7950 15.4 14.1 109 14.8 13.8 107 HAYDEN FORK 9400 10.3 11.4 90 13.7 13.0 105 KELLEY R.S. 8180 13.0 11.9 109 14.6 14.7 99 LILY LAKE 9050 9.4 9.0 104 13.0 10.2 127 MONTE CRISTO 8960 19.0 19.0 100 19.8 17.9 111 SALT RIVER SUMMIT 7600 12.2 10.0 122 14.3 13.2 108 TRIAL LAKE 9960 14.7 17.3 85 15.6 16.6 94 ----- ----- Basin wide percent of average 101 106 ----------------------------------------------------------------------------- -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.