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 25 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.3 15.2 147 23.6 19.6 120 COTTONWOOD CREEK 7600 21.0 17.9 117 23.7 21.6 110 GRANITE CREEK 6770 19.1 15.0 127 20.7 20.5 101 GRASSY LAKE 7265 36.8 29.7 124 35.6 31.6 113 GROS VENTRE SUMMIT 8775 13.7 12.6 109 13.4 13.8 97 LEWIS LAKE DIVIDE 7860 35.8 28.6 125 29.2 32.1 91 PHILLIPS BENCH 8200 28.8 23.6 122 24.8 25.4 98 SALT RIVER SUMMIT 7600 14.0 11.7 120 16.2 14.7 110 SNAKE RIVER STATION 6920 19.6 15.7 125 22.7 22.2 102 SPRING CREEK DIVIDE 9000 24.9 22.6 110 24.3 23.4 104 THUMB DIVIDE 7980 20.8 13.9 150 19.5 18.3 107 TOGWOTEE PASS 9580 -M 20.3 * 25.2 24.0 105 TWO OCEAN PLATEAU 9360 32.2 21.7 148 23.3 27.0 86 WILLOW CREEK 8450 28.5 25.2 113 32.7 27.8 118 ----- ----- Basin wide percent of average 125 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.2 19.4 120 20.9 14.7 142 BLACK BEAR 7950 44.9 30.7 146 -M 32.7 * CANYON 7940 16.3 10.4 157 16.9 11.8 143 FISHER CREEK 9100 35.5 29.4 121 -M 29.8 * MADISON PLATEAU 7750 -M 20.0 * 24.4 21.2 115 NORTHEAST ENTRANCE 7350 10.9 7.9 138 12.7 9.9 128 PARKER PEAK 9400 20.6 17.5 118 -M 12.7 * SYLVAN LAKE 8420 23.0 18.0 128 24.8 15.9 156 THUMB DIVIDE 7980 20.8 13.9 150 19.5 18.3 107 TWO OCEAN PLATEAU 9360 32.2 21.7 148 23.3 27.0 86 WHISKEY CREEK 6800 18.6 14.0 133 19.5 17.5 111 WHITE MILL 8700 24.0 20.7 116 21.4 23.2 92 WOLVERINE 7650 13.0 9.8 133 11.6 10.7 108 ----- ----- Basin wide percent of average 133 115 WIND RIVER BURROUGHS CREEK 8750 15.3 12.8 120 16.7 13.6 123 COLD SPRINGS 9630 8.4 6.8 124 10.3 8.2 126 DEER PARK 9700 14.7 -M * 19.4 -M * HOBBS PARK 10100 15.3 11.8 130 13.9 10.9 128 LITTLE WARM 9620 12.2 8.9 137 13.4 10.5 128 SOUTH PASS 9040 15.8 13.6 116 16.9 13.4 126 ST. LAWRENCE ALT 8620 6.4 6.0 107 9.2 7.8 118 TOGWOTEE PASS 9580 -M 20.3 * 25.2 24.0 105 TOWNSEND CREEK 8700 8.7 7.7 113 11.4 9.5 120 ----- ----- Basin wide percent of average 121 120 BIGHORN BASIN BALD MTN. 9375 16.8 16.6 101 15.7 13.8 114 BEAR TRAP MEADOW 7900 5.7 5.8 98 8.0 6.2 129 BLACKWATER 9780 27.0 17.4 155 22.3 14.8 151 BONE SPRINGS DIV 9350 13.4 13.0 103 13.6 11.4 119 EVENING STAR 9200 30.0 21.9 137 28.4 18.5 154 GRAVE SPRINGS 8550 6.5 7.4 88 9.2 7.3 126 KIRWIN 9550 11.1 7.9 141 12.9 8.3 155 MARQUETTE 8760 7.0 6.3 111 7.9 6.9 114 MIDDLE POWDER 7760 7.4 9.4 79 12.8 9.0 142 OWL CREEK 8975 5.5 3.6 153 6.2 4.7 132 POWDER RIVER PASS 9480 10.7 8.5 126 12.7 9.2 138 SHELL CREEK 9580 14.3 12.3 116 13.1 10.4 126 SYLVAN LAKE 8420 23.0 18.0 128 24.8 15.9 156 SYLVAN ROAD 8120 15.4 10.8 143 17.3 13.2 131 TIMBER CREEK 7950 4.6 4.7 98 6.3 5.0 126 YOUNTS PEAK 8350 19.1 14.4 133 16.9 13.5 125 ----- ----- Basin wide percent of average 122 136 SHOSHONE RIVER BLACKWATER 9780 27.0 17.4 155 22.3 14.8 151 EVENING STAR 9200 30.0 21.9 137 28.4 18.5 154 KIRWIN 9550 11.1 7.9 141 12.9 8.3 155 MARQUETTE 8760 7.0 6.3 111 7.9 6.9 114 SYLVAN LAKE 8420 23.0 18.0 128 24.8 15.9 156 SYLVAN ROAD 8120 15.4 10.8 143 17.3 13.2 131 YOUNTS PEAK 8350 19.1 14.4 133 16.9 13.5 125 ----- ----- Basin wide percent of average 137 143 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 13.4 13.0 103 13.6 11.4 119 BURGESS JUNCTION 7880 7.1 9.4 76 8.8 8.4 105 CLOUD PEAK RESERVOIR 9860 12.3 10.7 115 10.8 10.0 108 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 4.7 5.6 84 6.8 5.9 115 MIDDLE POWDER 7760 7.4 9.4 79 12.8 9.0 142 POWDER RIVER PASS 9480 10.7 8.5 126 12.7 9.2 138 SUCKER CREEK 8880 8.5 9.4 90 10.8 10.2 106 TIE CREEK 6870 2.9 -M * 6.8 8.0 85 ----- ----- Basin wide percent of average 92 115 BELLE FOURCHE BLIND PARK 6890 6.2 8.8 70 13.3 7.4 180 NORTH RAPID CREEK 6130 4.7 -M * 11.3 -M * WARREN PEAK 6520 7.8 8.8 89 11.9 6.1 195 ----- ----- Basin wide percent of average 80 187 UPPER N. PLATTE RIVER COLUMBINE 9400 17.8 20.3 88 18.7 19.9 94 DIVIDE PEAK 8800 16.5 16.3 101 21.7 18.3 119 ELK RIVER 8700 16.0 16.2 99 19.4 15.1 128 JOE WRIGHT 10120 17.2 16.9 102 22.8 19.7 116 NORTH FRENCH CREEK 10100 25.3 19.8 128 25.8 18.4 140 OLD BATTLE 10000 24.1 25.4 95 30.9 23.8 130 SOUTH BRUSH CREEK 8400 -M 9.1 * 16.9 12.6 134 TOWER 10500 37.1 36.3 102 33.9 29.2 116 WEBBER SPRINGS 9200 16.4 21.6 76 22.2 20.1 110 WILLOW CREEK PASS 9540 9.9 8.9 111 10.6 9.6 110 ----- ----- Basin wide percent of average 99 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.3 19.3 95 19.4 15.0 129 CASPER MTN. 7900 9.6 11.9 81 14.4 10.5 137 DEADMAN HILL 10220 14.0 13.2 106 15.0 12.6 119 DEER PARK 9700 14.7 -M * 19.4 -M * LAPRELE CREEK 8320 -M 8.1 * 12.6 8.9 142 RENO HILL 8400 11.3 10.4 109 15.9 14.1 113 ROACH 9700 14.4 13.6 106 16.8 16.9 99 SAND LAKE 10080 28.7 26.0 110 24.7 16.0 154 SOUTH PASS 9040 15.8 13.6 116 16.9 13.4 126 WINDY PEAK 7840 5.4 5.9 92 11.3 6.9 164 ----- ----- Basin wide percent of average 103 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.2 9.5 128 15.7 12.4 127 DIVIDE PEAK 8800 16.5 16.3 101 21.7 18.3 119 OLD BATTLE 10000 24.1 25.4 95 30.9 23.8 130 SANDSTONE RS 8150 11.7 11.8 99 18.1 15.1 120 WHISKEY PARK 8950 23.0 22.9 100 23.4 22.1 106 ----- ----- Basin wide percent of average 102 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.1 11.7 121 13.1 14.1 93 BLIND BULL SUM 8650 25.7 23.6 109 20.2 20.4 99 EAST RIM DIVIDE 7930 12.5 11.6 108 12.8 13.2 97 ELKHART PARK G.S. 9400 12.2 11.1 110 12.6 13.9 91 GROS VENTRE SUMMIT 8775 13.7 12.6 109 13.4 13.8 97 KENDALL R.S. 7740 14.2 12.1 117 14.5 13.5 107 LOOMIS PARK 8240 -M 14.5 * 18.2 16.4 111 NEW FORK LAKE 8340 11.3 9.6 118 11.1 12.6 88 SNIDER BASIN 8250 14.7 12.4 119 14.5 13.2 110 SPRING CREEK DIVIDE 9000 24.9 22.6 110 24.3 23.4 104 TRIPLE PEAK 8500 23.8 21.1 113 25.1 27.2 92 ----- ----- Basin wide percent of average 113 99 LOWER GREEN RIVER HAMS FORK 7840 12.6 10.2 124 9.7 11.6 84 HEWINTA 9500 9.4 8.2 115 12.0 9.9 121 HICKERSON PARK 9150 5.7 4.8 119 8.2 7.0 117 HOLE-IN-ROCK 9150 5.8 4.3 135 8.6 7.0 123 INDIAN CREEK 9425 25.1 22.2 113 20.7 21.9 95 KELLEY R.S. 8180 14.7 13.7 107 16.3 16.4 99 STEEL CREEK PARK 10100 12.1 12.1 100 14.0 10.1 139 ----- ----- Basin wide percent of average 113 107 UPPER BEAR RIVER BUG LAKE 7950 18.5 16.4 113 16.9 15.5 109 HAYDEN FORK 9400 13.0 13.2 98 16.9 14.7 115 KELLEY R.S. 8180 14.7 13.7 107 16.3 16.4 99 LILY LAKE 9050 11.3 10.3 110 15.2 11.4 133 MONTE CRISTO 8960 22.8 22.5 101 22.7 20.2 112 SALT RIVER SUMMIT 7600 14.0 11.7 120 16.2 14.7 110 TRIAL LAKE 9960 17.5 20.3 86 18.3 19.1 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.