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 FRIDAY: FEBRUARY 26 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.4 15.4 145 24.1 19.7 122 COTTONWOOD CREEK 7600 21.1 18.1 117 23.7 21.8 109 GRANITE CREEK 6770 19.2 15.1 127 20.8 20.7 100 GRASSY LAKE 7265 37.1 29.6 125 36.2 31.8 114 GROS VENTRE SUMMIT 8775 13.8 12.6 110 13.5 13.9 97 LEWIS LAKE DIVIDE 7860 36.1 28.8 125 29.5 32.3 91 PHILLIPS BENCH 8200 29.0 23.7 122 25.0 25.6 98 SALT RIVER SUMMIT 7600 14.1 11.8 119 16.3 14.8 110 SNAKE RIVER STATION 6920 -M 15.8 * -M 22.4 * SPRING CREEK DIVIDE 9000 25.1 22.7 111 24.4 23.6 103 THUMB DIVIDE 7980 -M 14.0 * -M 18.4 * TOGWOTEE PASS 9580 -M 20.4 * 25.3 24.2 105 TWO OCEAN PLATEAU 9360 32.4 21.8 149 23.4 27.1 86 WILLOW CREEK 8450 28.9 25.4 114 32.9 28.0 118 ----- ----- Basin wide percent of average 124 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.2 19.5 119 20.9 14.8 141 BLACK BEAR 7950 45.4 31.0 146 -M 32.9 * CANYON 7940 16.3 10.4 157 16.9 11.9 142 FISHER CREEK 9100 35.7 29.7 120 -M 30.0 * MADISON PLATEAU 7750 -M 20.2 * 24.5 21.3 115 NORTHEAST ENTRANCE 7350 10.9 7.9 138 12.8 10.0 128 PARKER PEAK 9400 20.6 17.6 117 -M 12.8 * SYLVAN LAKE 8420 23.1 18.1 128 25.0 16.0 156 THUMB DIVIDE 7980 -M 14.0 * -M 18.4 * TWO OCEAN PLATEAU 9360 32.4 21.8 149 23.4 27.1 86 WHISKEY CREEK 6800 18.8 14.1 133 19.5 17.6 111 WHITE MILL 8700 24.1 20.8 116 21.5 23.3 92 WOLVERINE 7650 13.0 9.9 131 11.6 10.8 107 ----- ----- Basin wide percent of average 131 115 WIND RIVER BURROUGHS CREEK 8750 15.4 12.8 120 16.7 13.7 122 COLD SPRINGS 9630 8.5 6.9 123 10.4 8.2 127 DEER PARK 9700 14.8 -M * 19.4 -M * HOBBS PARK 10100 15.4 11.9 129 13.9 11.0 126 LITTLE WARM 9620 12.3 9.0 137 13.5 10.6 127 SOUTH PASS 9040 15.9 13.7 116 16.9 13.5 125 ST. LAWRENCE ALT 8620 6.4 6.1 105 9.2 7.8 118 TOGWOTEE PASS 9580 -M 20.4 * 25.3 24.2 105 TOWNSEND CREEK 8700 8.7 7.8 112 11.4 9.6 119 ----- ----- Basin wide percent of average 121 119 BIGHORN BASIN BALD MTN. 9375 16.9 16.7 101 15.7 13.8 114 BEAR TRAP MEADOW 7900 5.7 5.8 98 8.0 6.2 129 BLACKWATER 9780 27.0 17.6 153 22.4 14.9 150 BONE SPRINGS DIV 9350 13.5 13.1 103 13.4 11.5 117 EVENING STAR 9200 30.1 22.1 136 28.4 18.6 153 GRAVE SPRINGS 8550 6.5 7.4 88 9.2 7.3 126 KIRWIN 9550 11.1 7.9 141 12.8 8.4 152 MARQUETTE 8760 6.9 6.4 108 7.8 7.0 111 MIDDLE POWDER 7760 7.4 9.5 78 12.9 9.1 142 OWL CREEK 8975 5.5 3.6 153 6.1 4.8 127 POWDER RIVER PASS 9480 10.7 8.6 124 12.7 9.2 138 SHELL CREEK 9580 14.3 12.4 115 13.1 10.4 126 SYLVAN LAKE 8420 23.1 18.1 128 25.0 16.0 156 SYLVAN ROAD 8120 15.5 10.9 142 17.4 13.3 131 TIMBER CREEK 7950 4.6 4.8 96 6.3 5.0 126 YOUNTS PEAK 8350 19.2 14.5 132 16.9 13.6 124 ----- ----- Basin wide percent of average 122 135 SHOSHONE RIVER BLACKWATER 9780 27.0 17.6 153 22.4 14.9 150 EVENING STAR 9200 30.1 22.1 136 28.4 18.6 153 KIRWIN 9550 11.1 7.9 141 12.8 8.4 152 MARQUETTE 8760 6.9 6.4 108 7.8 7.0 111 SYLVAN LAKE 8420 23.1 18.1 128 25.0 16.0 156 SYLVAN ROAD 8120 15.5 10.9 142 17.4 13.3 131 YOUNTS PEAK 8350 19.2 14.5 132 16.9 13.6 124 ----- ----- Basin wide percent of average 136 142 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.7 5.8 98 8.0 6.2 129 BIG GOOSE 7990 4.9 -M * 7.9 -M * BONE SPRINGS DIV 9350 13.5 13.1 103 13.4 11.5 117 BURGESS JUNCTION 7880 7.1 9.5 75 8.8 8.4 105 CLOUD PEAK RESERVOIR 9860 12.3 10.8 114 10.7 10.1 106 DOME LAKE 8880 6.9 11.0 63 9.4 10.2 92 GRAVE SPRINGS 8550 6.5 7.4 88 9.2 7.3 126 HANSEN SAWMILL 8760 4.6 5.6 82 6.9 5.9 117 MIDDLE POWDER 7760 7.4 9.5 78 12.9 9.1 142 POWDER RIVER PASS 9480 10.7 8.6 124 12.7 9.2 138 SUCKER CREEK 8880 8.6 9.5 91 10.8 10.3 105 TIE CREEK 6870 -M -M * -M 8.1 * ----- ----- Basin wide percent of average 92 117 BELLE FOURCHE BLIND PARK 6890 6.3 8.9 71 13.3 7.4 180 NORTH RAPID CREEK 6130 4.7 -M * 11.4 -M * WARREN PEAK 6520 7.8 8.9 88 11.9 6.1 195 ----- ----- Basin wide percent of average 79 187 UPPER N. PLATTE RIVER COLUMBINE 9400 17.8 20.4 87 18.8 20.1 94 DIVIDE PEAK 8800 16.4 16.4 100 21.7 18.4 118 ELK RIVER 8700 16.1 16.3 99 19.6 15.2 129 JOE WRIGHT 10120 17.2 17.1 101 22.8 19.8 115 NORTH FRENCH CREEK 10100 25.4 19.9 128 25.7 18.5 139 OLD BATTLE 10000 24.2 25.6 95 31.0 24.0 129 SOUTH BRUSH CREEK 8400 11.3 9.1 124 16.9 12.7 133 TOWER 10500 37.2 36.5 102 33.9 29.4 115 WEBBER SPRINGS 9200 16.4 21.8 75 22.4 20.3 110 WILLOW CREEK PASS 9540 9.9 9.0 110 10.7 9.7 110 ----- ----- Basin wide percent of average 100 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.3 19.5 94 19.4 15.1 128 CASPER MTN. 7900 9.6 12.0 80 14.4 10.6 136 DEADMAN HILL 10220 14.7 13.3 111 15.0 12.7 118 DEER PARK 9700 14.8 -M * 19.4 -M * LAPRELE CREEK 8320 -M 8.2 * 12.6 8.9 142 RENO HILL 8400 11.3 10.5 108 15.9 14.3 111 ROACH 9700 14.4 13.7 105 16.9 17.0 99 SAND LAKE 10080 28.9 26.2 110 24.8 16.1 154 SOUTH PASS 9040 15.9 13.7 116 16.9 13.5 125 WINDY PEAK 7840 5.4 6.0 90 11.3 7.0 161 ----- ----- Basin wide percent of average 103 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.4 9.6 129 15.7 12.4 127 DIVIDE PEAK 8800 16.4 16.4 100 21.7 18.4 118 OLD BATTLE 10000 24.2 25.6 95 31.0 24.0 129 SANDSTONE RS 8150 11.7 11.9 98 18.2 15.2 120 WHISKEY PARK 8950 23.0 23.0 100 23.7 22.2 107 ----- ----- Basin wide percent of average 101 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.1 11.8 119 13.1 14.2 92 BLIND BULL SUM 8650 25.9 23.8 109 20.2 20.6 98 EAST RIM DIVIDE 7930 12.5 11.7 107 12.8 13.3 96 ELKHART PARK G.S. 9400 12.3 11.2 110 12.7 14.0 91 GROS VENTRE SUMMIT 8775 13.8 12.6 110 13.5 13.9 97 KENDALL R.S. 7740 14.3 12.2 117 14.5 13.6 107 LOOMIS PARK 8240 -M 14.6 * 18.2 16.5 110 NEW FORK LAKE 8340 11.3 9.7 116 11.0 12.7 87 SNIDER BASIN 8250 14.8 12.5 118 14.6 13.3 110 SPRING CREEK DIVIDE 9000 25.1 22.7 111 24.4 23.6 103 TRIPLE PEAK 8500 24.0 21.3 113 25.2 27.3 92 ----- ----- Basin wide percent of average 112 98 LOWER GREEN RIVER HAMS FORK 7840 12.7 10.3 123 9.7 11.7 83 HEWINTA 9500 9.7 8.2 118 12.0 10.0 120 HICKERSON PARK 9150 5.8 4.9 118 8.2 7.1 115 HOLE-IN-ROCK 9150 6.0 4.4 136 8.6 7.1 121 INDIAN CREEK 9425 25.2 22.4 113 20.7 22.1 94 KELLEY R.S. 8180 14.8 13.9 106 16.4 16.5 99 STEEL CREEK PARK 10100 12.3 12.2 101 14.2 10.1 141 ----- ----- Basin wide percent of average 113 106 UPPER BEAR RIVER BUG LAKE 7950 18.9 16.5 115 17.2 15.6 110 HAYDEN FORK 9400 13.3 13.3 100 16.9 14.8 114 KELLEY R.S. 8180 14.8 13.9 106 16.4 16.5 99 LILY LAKE 9050 11.6 10.4 112 15.4 11.5 134 MONTE CRISTO 8960 23.2 22.7 102 23.0 20.3 113 SALT RIVER SUMMIT 7600 14.1 11.8 119 16.3 14.8 110 TRIAL LAKE 9960 17.8 20.6 86 18.6 19.2 97 ----- ----- Basin wide percent of average 104 110 ----------------------------------------------------------------------------- -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.