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 SATURDAY: FEBRUARY 27 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.9 15.5 148 24.1 19.8 122 COTTONWOOD CREEK 7600 21.6 18.2 119 23.9 21.9 109 GRANITE CREEK 6770 19.3 15.2 127 20.9 20.8 100 GRASSY LAKE 7265 37.6 29.6 127 36.7 32.1 114 GROS VENTRE SUMMIT 8775 13.7 12.7 108 13.6 14.0 97 LEWIS LAKE DIVIDE 7860 36.8 29.1 126 29.4 32.6 90 PHILLIPS BENCH 8200 29.4 23.9 123 25.0 25.8 97 SALT RIVER SUMMIT 7600 14.2 11.9 119 16.2 14.9 109 SNAKE RIVER STATION 6920 20.1 16.0 126 23.3 22.5 104 SPRING CREEK DIVIDE 9000 25.4 22.9 111 24.7 23.8 104 THUMB DIVIDE 7980 21.0 14.1 149 19.7 18.6 106 TOGWOTEE PASS 9580 -M 20.5 * 25.4 24.4 104 TWO OCEAN PLATEAU 9360 32.6 21.9 149 23.4 27.3 86 WILLOW CREEK 8450 29.1 25.5 114 33.0 28.2 117 ----- ----- Basin wide percent of average 126 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.1 19.6 118 20.8 14.9 140 BLACK BEAR 7950 45.7 31.2 146 -M 33.2 * CANYON 7940 16.3 10.5 155 16.9 11.9 142 FISHER CREEK 9100 35.9 29.9 120 -M 30.3 * MADISON PLATEAU 7750 -M 20.3 * 24.5 21.5 114 NORTHEAST ENTRANCE 7350 11.0 8.0 138 12.8 10.1 127 PARKER PEAK 9400 20.6 17.7 116 -M 12.9 * SYLVAN LAKE 8420 23.1 18.3 126 25.0 16.1 155 THUMB DIVIDE 7980 21.0 14.1 149 19.7 18.6 106 TWO OCEAN PLATEAU 9360 32.6 21.9 149 23.4 27.3 86 WHISKEY CREEK 6800 18.9 14.3 132 19.5 17.7 110 WHITE MILL 8700 24.2 20.9 116 21.5 23.5 91 WOLVERINE 7650 12.8 10.0 128 11.6 10.8 107 ----- ----- Basin wide percent of average 132 114 WIND RIVER BURROUGHS CREEK 8750 15.5 12.9 120 16.9 13.8 122 COLD SPRINGS 9630 8.5 6.9 123 10.4 8.3 125 DEER PARK 9700 14.7 -M * 19.7 -M * HOBBS PARK 10100 15.2 11.9 128 14.0 11.1 126 LITTLE WARM 9620 12.1 9.1 133 13.4 10.7 125 SOUTH PASS 9040 15.9 13.8 115 17.0 13.6 125 ST. LAWRENCE ALT 8620 6.3 6.1 103 9.3 7.9 118 TOGWOTEE PASS 9580 -M 20.5 * 25.4 24.4 104 TOWNSEND CREEK 8700 8.3 7.9 105 11.1 9.7 114 ----- ----- Basin wide percent of average 119 118 BIGHORN BASIN BALD MTN. 9375 17.5 16.8 104 16.2 13.9 117 BEAR TRAP MEADOW 7900 6.0 5.8 103 8.0 6.2 129 BLACKWATER 9780 26.9 17.7 152 22.5 15.0 150 BONE SPRINGS DIV 9350 13.5 13.2 102 13.6 11.5 118 EVENING STAR 9200 30.1 22.2 136 28.3 18.7 151 GRAVE SPRINGS 8550 6.5 7.5 87 9.4 7.3 129 KIRWIN 9550 -M 8.0 * 12.9 8.5 152 MARQUETTE 8760 -M 6.4 * 7.3 7.0 104 MIDDLE POWDER 7760 7.4 9.6 77 13.0 9.1 143 OWL CREEK 8975 5.3 3.6 147 5.8 4.8 121 POWDER RIVER PASS 9480 10.9 8.7 125 12.9 9.3 139 SHELL CREEK 9580 14.5 12.4 117 13.5 10.5 129 SYLVAN LAKE 8420 23.1 18.3 126 25.0 16.1 155 SYLVAN ROAD 8120 15.6 11.0 142 17.7 13.4 132 TIMBER CREEK 7950 4.6 4.8 96 6.3 5.0 126 YOUNTS PEAK 8350 19.3 14.6 132 17.0 13.7 124 ----- ----- Basin wide percent of average 121 135 SHOSHONE RIVER BLACKWATER 9780 26.9 17.7 152 22.5 15.0 150 EVENING STAR 9200 30.1 22.2 136 28.3 18.7 151 KIRWIN 9550 -M 8.0 * 12.9 8.5 152 MARQUETTE 8760 -M 6.4 * 7.3 7.0 104 SYLVAN LAKE 8420 23.1 18.3 126 25.0 16.1 155 SYLVAN ROAD 8120 15.6 11.0 142 17.7 13.4 132 YOUNTS PEAK 8350 19.3 14.6 132 17.0 13.7 124 ----- ----- Basin wide percent of average 137 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.0 5.8 103 8.0 6.2 129 BIG GOOSE 7990 4.8 -M * 7.8 -M * BONE SPRINGS DIV 9350 13.5 13.2 102 13.6 11.5 118 BURGESS JUNCTION 7880 6.8 9.5 72 8.7 8.5 102 CLOUD PEAK RESERVOIR 9860 12.3 10.9 113 10.4 10.1 103 DOME LAKE 8880 6.8 11.1 61 9.7 10.3 94 GRAVE SPRINGS 8550 6.5 7.5 87 9.4 7.3 129 HANSEN SAWMILL 8760 4.4 5.6 79 6.9 5.9 117 MIDDLE POWDER 7760 7.4 9.6 77 13.0 9.1 143 POWDER RIVER PASS 9480 10.9 8.7 125 12.9 9.3 139 SUCKER CREEK 8880 8.3 9.6 86 10.6 10.4 102 TIE CREEK 6870 2.9 -M * 6.8 8.1 84 ----- ----- Basin wide percent of average 91 114 BELLE FOURCHE BLIND PARK 6890 7.1 9.0 79 14.1 7.5 188 NORTH RAPID CREEK 6130 4.9 -M * 11.5 -M * WARREN PEAK 6520 9.0 9.0 100 12.8 6.1 210 ----- ----- Basin wide percent of average 89 198 UPPER N. PLATTE RIVER COLUMBINE 9400 18.2 20.6 88 18.9 20.2 94 DIVIDE PEAK 8800 16.3 16.6 98 21.8 18.5 118 ELK RIVER 8700 16.1 16.4 98 19.3 15.3 126 JOE WRIGHT 10120 17.3 17.2 101 22.7 19.9 114 NORTH FRENCH CREEK 10100 25.3 20.1 126 25.7 18.6 138 OLD BATTLE 10000 24.1 25.8 93 30.8 24.1 128 SOUTH BRUSH CREEK 8400 11.3 9.2 123 16.9 12.7 133 TOWER 10500 37.8 36.8 103 34.1 29.6 115 WEBBER SPRINGS 9200 16.4 22.0 75 22.3 20.4 109 WILLOW CREEK PASS 9540 10.0 9.1 110 10.3 9.8 105 ----- ----- Basin wide percent of average 99 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.1 19.6 92 19.3 15.3 126 CASPER MTN. 7900 9.4 12.1 78 14.2 10.6 134 DEADMAN HILL 10220 -M 13.3 * 15.0 12.8 117 DEER PARK 9700 14.7 -M * 19.7 -M * LAPRELE CREEK 8320 -M 8.3 * 12.6 9.0 140 RENO HILL 8400 11.3 10.6 107 15.8 14.4 110 ROACH 9700 14.4 13.8 104 16.8 17.1 98 SAND LAKE 10080 28.8 26.4 109 24.8 16.2 153 SOUTH PASS 9040 15.9 13.8 115 17.0 13.6 125 WINDY PEAK 7840 5.3 6.1 87 11.2 7.0 160 ----- ----- Basin wide percent of average 101 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.1 9.7 125 15.6 12.5 125 DIVIDE PEAK 8800 16.3 16.6 98 21.8 18.5 118 OLD BATTLE 10000 24.1 25.8 93 30.8 24.1 128 SANDSTONE RS 8150 11.6 12.0 97 18.1 15.3 118 WHISKEY PARK 8950 23.1 23.2 100 23.7 22.3 106 ----- ----- Basin wide percent of average 100 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.9 11.9 117 13.1 14.3 92 BLIND BULL SUM 8650 25.9 23.9 108 20.2 20.7 98 EAST RIM DIVIDE 7930 12.4 11.8 105 12.7 13.4 95 ELKHART PARK G.S. 9400 12.2 11.3 108 12.6 14.1 89 GROS VENTRE SUMMIT 8775 13.7 12.7 108 13.6 14.0 97 KENDALL R.S. 7740 14.3 12.3 116 14.4 13.7 105 LOOMIS PARK 8240 -M 14.7 * 18.3 16.6 110 NEW FORK LAKE 8340 11.3 9.8 115 10.8 12.7 85 SNIDER BASIN 8250 14.9 12.6 118 14.7 13.4 110 SPRING CREEK DIVIDE 9000 25.4 22.9 111 24.7 23.8 104 TRIPLE PEAK 8500 24.4 21.4 114 25.2 27.5 92 ----- ----- Basin wide percent of average 112 98 LOWER GREEN RIVER HAMS FORK 7840 12.7 10.3 123 9.8 11.8 83 HEWINTA 9500 9.7 8.3 117 12.1 10.1 120 HICKERSON PARK 9150 5.7 4.9 116 8.2 7.1 115 HOLE-IN-ROCK 9150 6.0 4.4 136 8.6 7.1 121 INDIAN CREEK 9425 25.4 22.6 112 20.8 22.2 94 KELLEY R.S. 8180 14.8 14.0 106 16.4 16.6 99 STEEL CREEK PARK 10100 12.2 12.4 98 14.1 10.2 138 ----- ----- Basin wide percent of average 112 106 UPPER BEAR RIVER BUG LAKE 7950 19.1 16.7 114 17.2 15.7 110 HAYDEN FORK 9400 13.4 13.5 99 16.9 15.0 113 KELLEY R.S. 8180 14.8 14.0 106 16.4 16.6 99 LILY LAKE 9050 11.6 10.4 112 15.5 11.5 135 MONTE CRISTO 8960 23.2 23.0 101 23.0 20.5 112 SALT RIVER SUMMIT 7600 14.2 11.9 119 16.2 14.9 109 TRIAL LAKE 9960 17.8 20.8 86 18.7 19.4 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.