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 THURSDAY: FEBRUARY 11 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.5 13.6 136 -M 17.7 * COTTONWOOD CREEK 7600 17.8 15.7 113 20.0 19.1 105 GRANITE CREEK 6770 16.3 13.4 122 18.4 18.6 99 GRASSY LAKE 7265 30.5 27.9 109 30.5 28.6 107 GROS VENTRE SUMMIT 8775 12.4 11.4 109 12.3 12.5 98 LEWIS LAKE DIVIDE 7860 30.0 25.4 118 27.7 29.1 95 PHILLIPS BENCH 8200 24.4 21.3 115 23.0 23.0 100 SALT RIVER SUMMIT 7600 12.2 10.1 121 14.1 13.3 106 SNAKE RIVER STATION 6920 16.5 13.9 119 -M 20.1 * SPRING CREEK DIVIDE 9000 21.9 20.0 110 20.1 21.1 95 THUMB DIVIDE 7980 18.3 12.5 146 17.5 16.6 105 TOGWOTEE PASS 9580 -M 18.3 * 22.9 21.7 106 TWO OCEAN PLATEAU 9360 28.8 19.8 145 22.6 24.4 93 WILLOW CREEK 8450 24.6 23.0 107 28.3 24.9 114 ----- ----- Basin wide percent of average 119 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.6 17.4 118 18.6 13.2 141 BLACK BEAR 7950 38.7 27.2 142 -M 29.1 * CANYON 7940 14.5 9.2 158 15.1 10.7 141 FISHER CREEK 9100 31.7 26.4 120 -M 26.8 * MADISON PLATEAU 7750 -M 17.8 * 23.5 18.9 124 NORTHEAST ENTRANCE 7350 9.5 7.0 136 11.3 9.0 126 PARKER PEAK 9400 18.5 15.7 118 -M 11.4 * SYLVAN LAKE 8420 20.8 16.3 128 23.0 14.3 161 THUMB DIVIDE 7980 18.3 12.5 146 17.5 16.6 105 TWO OCEAN PLATEAU 9360 28.8 19.8 145 22.6 24.4 93 WHISKEY CREEK 6800 16.8 12.3 137 19.1 15.7 122 WHITE MILL 8700 20.9 18.6 112 18.8 20.9 90 WOLVERINE 7650 11.8 8.8 134 10.7 9.6 111 ----- ----- Basin wide percent of average 131 118 WIND RIVER BURROUGHS CREEK 8750 13.9 11.5 121 15.2 12.3 124 COLD SPRINGS 9630 7.9 6.2 127 9.6 7.4 130 DEER PARK 9700 14.3 -M * 18.6 -M * HOBBS PARK 10100 14.1 10.7 132 13.3 9.9 134 LITTLE WARM 9620 -M 7.9 * 12.2 9.6 127 SOUTH PASS 9040 15.2 12.3 124 16.4 11.9 138 ST. LAWRENCE ALT 8620 6.2 5.3 117 9.1 6.9 132 TOGWOTEE PASS 9580 -M 18.3 * 22.9 21.7 106 TOWNSEND CREEK 8700 8.3 6.8 122 10.9 8.5 128 ----- ----- Basin wide percent of average 124 124 BIGHORN BASIN BALD MTN. 9375 14.7 15.0 98 13.3 12.6 106 BEAR TRAP MEADOW 7900 -M 5.2 * 7.6 5.7 133 BLACKWATER 9780 23.8 15.4 155 20.2 13.3 152 BONE SPRINGS DIV 9350 11.6 11.6 100 11.6 10.2 114 EVENING STAR 9200 26.9 19.7 137 27.0 16.6 163 GRAVE SPRINGS 8550 5.3 6.6 80 8.5 6.8 125 KIRWIN 9550 -M 7.1 * 11.7 7.4 158 MARQUETTE 8760 -M 5.7 * 6.7 6.3 106 MIDDLE POWDER 7760 6.1 8.4 73 11.6 8.3 140 OWL CREEK 8975 -M 3.1 * 5.4 4.2 129 POWDER RIVER PASS 9480 9.4 7.6 124 11.5 8.4 137 SHELL CREEK 9580 12.9 11.1 116 -M 9.5 * SYLVAN LAKE 8420 20.8 16.3 128 23.0 14.3 161 SYLVAN ROAD 8120 13.9 9.5 146 16.0 12.0 133 TIMBER CREEK 7950 4.4 4.1 107 6.3 4.5 140 YOUNTS PEAK 8350 17.3 13.1 132 15.2 12.2 125 ----- ----- Basin wide percent of average 121 137 SHOSHONE RIVER BLACKWATER 9780 23.8 15.4 155 20.2 13.3 152 EVENING STAR 9200 26.9 19.7 137 27.0 16.6 163 KIRWIN 9550 -M 7.1 * 11.7 7.4 158 MARQUETTE 8760 -M 5.7 * 6.7 6.3 106 SYLVAN LAKE 8420 20.8 16.3 128 23.0 14.3 161 SYLVAN ROAD 8120 13.9 9.5 146 16.0 12.0 133 YOUNTS PEAK 8350 17.3 13.1 132 15.2 12.2 125 ----- ----- Basin wide percent of average 139 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 5.2 * 7.6 5.7 133 BIG GOOSE 7990 4.5 -M * 7.4 -M * BONE SPRINGS DIV 9350 11.6 11.6 100 11.6 10.2 114 BURGESS JUNCTION 7880 6.0 8.3 72 8.0 7.6 105 CLOUD PEAK RESERVOIR 9860 10.9 9.1 120 9.1 8.9 102 DOME LAKE 8880 6.4 9.8 65 8.5 9.3 91 GRAVE SPRINGS 8550 5.3 6.6 80 8.5 6.8 125 HANSEN SAWMILL 8760 4.1 5.0 82 6.9 5.4 128 MIDDLE POWDER 7760 6.1 8.4 73 11.6 8.3 140 POWDER RIVER PASS 9480 9.4 7.6 124 11.5 8.4 137 SUCKER CREEK 8880 7.4 8.4 88 9.4 9.3 101 TIE CREEK 6870 -M -M * -M 7.3 * ----- ----- Basin wide percent of average 90 116 BELLE FOURCHE BLIND PARK 6890 5.5 7.9 70 12.5 6.6 189 NORTH RAPID CREEK 6130 4.2 -M * 10.7 -M * WARREN PEAK 6520 6.5 7.9 82 10.9 5.6 195 ----- ----- Basin wide percent of average 76 192 UPPER N. PLATTE RIVER COLUMBINE 9400 15.3 17.7 86 16.2 17.9 91 DIVIDE PEAK 8800 15.2 14.6 104 20.0 17.0 118 ELK RIVER 8700 -M 14.1 * 17.7 13.6 130 JOE WRIGHT 10120 15.5 15.3 101 20.4 17.8 115 NORTH FRENCH CREEK 10100 22.0 17.6 125 23.1 16.5 140 OLD BATTLE 10000 21.4 22.6 95 27.4 21.2 129 SOUTH BRUSH CREEK 8400 5.7 7.9 72 15.6 11.5 136 TOWER 10500 32.4 32.7 99 30.7 26.2 117 WEBBER SPRINGS 9200 14.5 19.3 75 20.0 18.1 110 WILLOW CREEK PASS 9540 9.1 8.0 114 9.3 8.6 108 ----- ----- Basin wide percent of average 97 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.1 17.4 87 17.0 13.3 128 CASPER MTN. 7900 8.0 10.4 77 13.0 9.4 138 DEADMAN HILL 10220 -M 12.0 * 13.6 11.3 120 DEER PARK 9700 14.3 -M * 18.6 -M * LAPRELE CREEK 8320 1.6 7.2 22 10.4 8.1 128 RENO HILL 8400 9.6 9.2 104 13.6 12.5 109 ROACH 9700 13.4 12.1 111 15.7 15.3 103 SAND LAKE 10080 24.6 23.3 106 21.9 14.2 154 SOUTH PASS 9040 15.2 12.3 124 16.4 11.9 138 WINDY PEAK 7840 3.9 5.1 76 9.7 6.3 154 ----- ----- Basin wide percent of average 94 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.1 8.2 135 14.3 11.5 124 DIVIDE PEAK 8800 15.2 14.6 104 20.0 17.0 118 OLD BATTLE 10000 21.4 22.6 95 27.4 21.2 129 SANDSTONE RS 8150 10.0 10.4 96 16.4 14.1 116 WHISKEY PARK 8950 19.3 20.3 95 22.5 20.9 108 ----- ----- Basin wide percent of average 101 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.9 10.4 124 12.2 12.8 95 BLIND BULL SUM 8650 22.5 21.0 107 18.1 18.3 99 EAST RIM DIVIDE 7930 11.0 10.2 108 11.3 12.0 94 ELKHART PARK G.S. 9400 11.1 10.0 111 11.7 12.6 93 GROS VENTRE SUMMIT 8775 12.4 11.4 109 12.3 12.5 98 KENDALL R.S. 7740 12.6 10.8 117 12.7 12.2 104 LOOMIS PARK 8240 -M 12.9 * 16.3 14.9 109 NEW FORK LAKE 8340 10.2 8.6 119 10.1 11.4 89 SNIDER BASIN 8250 12.6 10.9 116 12.7 12.0 106 SPRING CREEK DIVIDE 9000 21.9 20.0 110 20.1 21.1 95 TRIPLE PEAK 8500 20.1 19.0 106 20.7 24.6 84 ----- ----- Basin wide percent of average 111 96 LOWER GREEN RIVER HAMS FORK 7840 10.0 9.0 111 8.7 10.6 82 HEWINTA 9500 7.3 7.0 104 10.3 9.0 114 HICKERSON PARK 9150 5.2 4.1 127 7.8 6.4 122 HOLE-IN-ROCK 9150 5.0 3.7 135 7.9 6.4 123 INDIAN CREEK 9425 22.0 19.8 111 18.4 19.8 93 KELLEY R.S. 8180 13.0 12.1 107 14.7 14.8 99 STEEL CREEK PARK 10100 10.3 10.6 97 12.2 9.2 133 ----- ----- Basin wide percent of average 110 105 UPPER BEAR RIVER BUG LAKE 7950 15.4 14.3 108 14.6 13.9 105 HAYDEN FORK 9400 10.7 11.5 93 14.3 13.1 109 KELLEY R.S. 8180 13.0 12.1 107 14.7 14.8 99 LILY LAKE 9050 9.9 9.1 109 13.6 10.3 132 MONTE CRISTO 8960 19.3 19.2 101 19.9 18.0 111 SALT RIVER SUMMIT 7600 12.2 10.1 121 14.1 13.3 106 TRIAL LAKE 9960 15.2 17.5 87 16.2 16.8 96 ----- ----- Basin wide percent of average 102 107 ----------------------------------------------------------------------------- -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.