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 MONDAY: FEBRUARY 22 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.1 14.9 142 -M 19.2 * COTTONWOOD CREEK 7600 20.5 17.5 117 23.0 21.1 109 GRANITE CREEK 6770 18.7 14.7 127 20.4 20.1 101 GRASSY LAKE 7265 34.9 29.7 118 34.4 31.0 111 GROS VENTRE SUMMIT 8775 13.5 12.3 110 13.2 13.6 97 LEWIS LAKE DIVIDE 7860 34.1 27.9 122 28.6 31.5 91 PHILLIPS BENCH 8200 27.8 23.1 120 23.6 24.9 95 SALT RIVER SUMMIT 7600 13.8 11.4 121 15.9 14.4 110 SNAKE RIVER STATION 6920 18.7 15.4 121 22.1 21.8 101 SPRING CREEK DIVIDE 9000 24.3 22.0 110 23.8 22.9 104 THUMB DIVIDE 7980 -M 13.6 * -M 17.9 * TOGWOTEE PASS 9580 -M 19.9 * 24.5 23.6 104 TWO OCEAN PLATEAU 9360 31.1 21.3 146 23.3 26.4 88 WILLOW CREEK 8450 28.0 24.8 113 31.6 27.2 116 ----- ----- Basin wide percent of average 122 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 22.1 19.0 116 19.7 14.4 137 BLACK BEAR 7950 42.5 30.0 142 -M 31.9 * CANYON 7940 16.0 10.1 158 16.3 11.6 141 FISHER CREEK 9100 34.0 28.8 118 -M 29.2 * MADISON PLATEAU 7750 -M 19.6 * 24.3 20.7 117 NORTHEAST ENTRANCE 7350 10.6 7.7 138 12.3 9.7 127 PARKER PEAK 9400 19.9 17.1 116 -M 12.5 * SYLVAN LAKE 8420 22.4 17.7 127 24.3 15.5 157 THUMB DIVIDE 7980 -M 13.6 * -M 17.9 * TWO OCEAN PLATEAU 9360 31.1 21.3 146 23.3 26.4 88 WHISKEY CREEK 6800 18.1 13.7 132 19.3 17.1 113 WHITE MILL 8700 22.8 20.3 112 20.4 22.7 90 WOLVERINE 7650 12.6 9.6 131 11.4 10.5 109 ----- ----- Basin wide percent of average 129 115 WIND RIVER BURROUGHS CREEK 8750 14.9 12.5 119 16.1 13.3 121 COLD SPRINGS 9630 8.3 6.7 124 10.2 8.0 128 DEER PARK 9700 14.9 -M * 19.2 -M * HOBBS PARK 10100 15.0 11.6 129 13.8 10.7 129 LITTLE WARM 9620 11.9 8.7 137 13.0 10.3 126 SOUTH PASS 9040 15.8 13.4 118 16.9 13.1 129 ST. LAWRENCE ALT 8620 6.4 5.9 108 9.2 7.6 121 TOGWOTEE PASS 9580 -M 19.9 * 24.5 23.6 104 TOWNSEND CREEK 8700 8.6 7.6 113 11.3 9.3 122 ----- ----- Basin wide percent of average 122 120 BIGHORN BASIN BALD MTN. 9375 16.5 16.3 101 15.3 13.5 113 BEAR TRAP MEADOW 7900 5.6 5.7 98 7.9 6.1 130 BLACKWATER 9780 25.6 17.0 151 21.7 14.5 150 BONE SPRINGS DIV 9350 13.1 12.7 103 13.2 11.1 119 EVENING STAR 9200 28.7 21.5 133 28.3 18.1 156 GRAVE SPRINGS 8550 6.0 7.2 83 8.8 7.2 122 KIRWIN 9550 10.9 7.7 142 12.6 8.2 154 MARQUETTE 8760 6.7 6.2 108 7.4 6.8 109 MIDDLE POWDER 7760 6.7 9.2 73 12.3 8.8 140 OWL CREEK 8975 5.4 3.5 154 5.9 4.6 128 POWDER RIVER PASS 9480 10.6 8.4 126 -M 9.0 * SHELL CREEK 9580 14.2 12.1 117 13.1 10.2 128 SYLVAN LAKE 8420 22.4 17.7 127 24.3 15.5 157 SYLVAN ROAD 8120 -M 10.6 * -M 13.0 * TIMBER CREEK 7950 4.6 4.6 100 6.3 4.9 129 YOUNTS PEAK 8350 18.6 14.2 131 16.4 13.3 123 ----- ----- Basin wide percent of average 119 136 SHOSHONE RIVER BLACKWATER 9780 25.6 17.0 151 21.7 14.5 150 EVENING STAR 9200 28.7 21.5 133 28.3 18.1 156 KIRWIN 9550 10.9 7.7 142 12.6 8.2 154 MARQUETTE 8760 6.7 6.2 108 7.4 6.8 109 SYLVAN LAKE 8420 22.4 17.7 127 24.3 15.5 157 SYLVAN ROAD 8120 -M 10.6 * -M 13.0 * YOUNTS PEAK 8350 18.6 14.2 131 16.4 13.3 123 ----- ----- Basin wide percent of average 134 145 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.6 5.7 98 7.9 6.1 130 BIG GOOSE 7990 4.9 -M * 7.8 -M * BONE SPRINGS DIV 9350 13.1 12.7 103 13.2 11.1 119 BURGESS JUNCTION 7880 6.8 9.2 74 8.6 8.2 105 CLOUD PEAK RESERVOIR 9860 11.9 10.4 114 10.4 9.8 106 DOME LAKE 8880 6.8 10.7 64 9.2 10.0 92 GRAVE SPRINGS 8550 6.0 7.2 83 8.8 7.2 122 HANSEN SAWMILL 8760 4.6 5.5 84 6.9 5.8 119 MIDDLE POWDER 7760 6.7 9.2 73 12.3 8.8 140 POWDER RIVER PASS 9480 10.6 8.4 126 -M 9.0 * SUCKER CREEK 8880 8.3 9.2 90 10.3 10.0 103 TIE CREEK 6870 2.8 -M * 6.6 7.8 85 ----- ----- Basin wide percent of average 91 111 BELLE FOURCHE BLIND PARK 6890 6.1 8.7 70 13.2 7.2 183 NORTH RAPID CREEK 6130 4.6 -M * 11.2 -M * WARREN PEAK 6520 7.5 8.7 86 11.8 6.0 197 ----- ----- Basin wide percent of average 78 189 UPPER N. PLATTE RIVER COLUMBINE 9400 17.1 19.7 87 18.0 19.5 92 DIVIDE PEAK 8800 16.3 16.0 102 21.3 18.1 118 ELK RIVER 8700 15.4 15.8 97 19.0 14.8 128 JOE WRIGHT 10120 16.6 16.6 100 21.9 19.3 113 NORTH FRENCH CREEK 10100 24.4 19.3 126 24.9 17.9 139 OLD BATTLE 10000 23.7 24.8 96 30.3 23.2 131 SOUTH BRUSH CREEK 8400 2.8 8.8 32 16.3 12.4 131 TOWER 10500 35.9 35.5 101 33.0 28.5 116 WEBBER SPRINGS 9200 16.0 21.2 75 21.7 19.7 110 WILLOW CREEK PASS 9540 10.0 8.8 114 10.6 9.4 113 ----- ----- Basin wide percent of average 96 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.8 18.9 94 18.9 14.7 129 CASPER MTN. 7900 9.3 11.6 80 14.1 10.3 137 DEADMAN HILL 10220 14.3 13.0 110 14.8 12.3 120 DEER PARK 9700 14.9 -M * 19.2 -M * LAPRELE CREEK 8320 -M 8.0 * 12.4 8.7 143 RENO HILL 8400 11.2 10.2 110 15.5 13.8 112 ROACH 9700 14.3 13.3 108 16.6 16.5 101 SAND LAKE 10080 27.7 25.5 109 23.9 15.6 153 SOUTH PASS 9040 15.8 13.4 118 16.9 13.1 129 WINDY PEAK 7840 5.4 5.8 93 11.2 6.8 165 ----- ----- Basin wide percent of average 104 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 9.2 134 15.5 12.2 127 DIVIDE PEAK 8800 16.3 16.0 102 21.3 18.1 118 OLD BATTLE 10000 23.7 24.8 96 30.3 23.2 131 SANDSTONE RS 8150 11.6 11.5 101 17.6 14.9 118 WHISKEY PARK 8950 22.1 22.3 99 23.1 21.9 105 ----- ----- Basin wide percent of average 103 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.9 11.4 122 12.8 13.9 92 BLIND BULL SUM 8650 25.1 23.1 109 19.9 20.0 100 EAST RIM DIVIDE 7930 12.2 11.3 108 12.5 13.0 96 ELKHART PARK G.S. 9400 12.0 10.9 110 12.4 13.7 91 GROS VENTRE SUMMIT 8775 13.5 12.3 110 13.2 13.6 97 KENDALL R.S. 7740 13.9 11.9 117 13.2 13.3 99 LOOMIS PARK 8240 -M 14.2 * 17.6 16.1 109 NEW FORK LAKE 8340 11.1 9.4 118 10.8 12.3 88 SNIDER BASIN 8250 14.4 12.1 119 14.3 13.0 110 SPRING CREEK DIVIDE 9000 24.3 22.0 110 23.8 22.9 104 TRIPLE PEAK 8500 23.0 20.7 111 24.0 26.6 90 ----- ----- Basin wide percent of average 113 98 LOWER GREEN RIVER HAMS FORK 7840 11.3 10.0 113 9.6 11.4 84 HEWINTA 9500 9.3 7.9 118 11.6 9.8 118 HICKERSON PARK 9150 5.7 4.7 121 8.1 6.9 117 HOLE-IN-ROCK 9150 5.8 4.2 138 8.6 6.9 125 INDIAN CREEK 9425 24.6 21.8 113 20.3 21.5 94 KELLEY R.S. 8180 14.5 13.4 108 16.1 16.0 101 STEEL CREEK PARK 10100 11.8 11.8 100 13.7 9.9 138 ----- ----- Basin wide percent of average 112 107 UPPER BEAR RIVER BUG LAKE 7950 18.3 15.9 115 16.7 15.1 111 HAYDEN FORK 9400 12.8 12.9 99 16.1 14.4 112 KELLEY R.S. 8180 14.5 13.4 108 16.1 16.0 101 LILY LAKE 9050 11.2 10.1 111 15.1 11.2 135 MONTE CRISTO 8960 22.5 21.7 104 22.4 19.7 114 SALT RIVER SUMMIT 7600 13.8 11.4 121 15.9 14.4 110 TRIAL LAKE 9960 17.4 19.7 88 18.2 18.6 98 ----- ----- Basin wide percent of average 105 110 ----------------------------------------------------------------------------- -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.