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 18 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 19.9 14.4 138 -M 18.6 * COTTONWOOD CREEK 7600 18.8 16.9 111 21.4 20.3 105 GRANITE CREEK 6770 17.5 14.2 123 19.4 19.6 99 GRASSY LAKE 7265 33.1 29.8 111 32.9 30.1 109 GROS VENTRE SUMMIT 8775 13.0 12.0 108 12.8 13.2 97 LEWIS LAKE DIVIDE 7860 32.4 27.1 120 28.5 30.6 93 PHILLIPS BENCH 8200 26.0 22.5 116 23.5 24.2 97 SALT RIVER SUMMIT 7600 13.0 10.9 119 15.1 14.0 108 SNAKE RIVER STATION 6920 17.6 14.9 118 21.1 21.2 100 SPRING CREEK DIVIDE 9000 22.9 21.3 108 22.8 22.3 102 THUMB DIVIDE 7980 19.4 13.2 147 18.5 17.4 106 TOGWOTEE PASS 9580 -M 19.3 * 23.8 22.9 104 TWO OCEAN PLATEAU 9360 30.2 20.8 145 23.3 25.7 91 WILLOW CREEK 8450 26.3 24.2 109 29.4 26.3 112 ----- ----- Basin wide percent of average 120 102 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.4 18.4 116 19.3 13.9 139 BLACK BEAR 7950 41.0 29.0 141 -M 30.9 * CANYON 7940 15.3 9.8 156 15.9 11.2 142 FISHER CREEK 9100 32.8 27.9 118 -M 28.3 * MADISON PLATEAU 7750 -M 19.0 * 24.1 20.0 121 NORTHEAST ENTRANCE 7350 10.1 7.5 135 11.8 9.5 124 PARKER PEAK 9400 19.5 16.6 117 -M 12.1 * SYLVAN LAKE 8420 21.9 17.2 127 24.0 15.1 159 THUMB DIVIDE 7980 19.4 13.2 147 18.5 17.4 106 TWO OCEAN PLATEAU 9360 30.2 20.8 145 23.3 25.7 91 WHISKEY CREEK 6800 17.4 13.2 132 19.4 16.6 117 WHITE MILL 8700 21.8 19.7 111 19.6 22.0 89 WOLVERINE 7650 12.3 9.3 132 11.2 10.1 111 ----- ----- Basin wide percent of average 130 116 WIND RIVER BURROUGHS CREEK 8750 14.5 12.2 119 15.8 12.9 122 COLD SPRINGS 9630 8.1 6.5 125 10.0 7.8 128 DEER PARK 9700 14.6 -M * 18.7 -M * HOBBS PARK 10100 14.5 11.2 129 13.8 10.4 133 LITTLE WARM 9620 11.4 8.4 136 12.7 10.1 126 SOUTH PASS 9040 15.5 13.0 119 16.6 12.6 132 ST. LAWRENCE ALT 8620 6.3 5.7 111 9.2 7.3 126 TOGWOTEE PASS 9580 -M 19.3 * 23.8 22.9 104 TOWNSEND CREEK 8700 8.3 7.3 114 11.0 9.0 122 ----- ----- Basin wide percent of average 122 121 BIGHORN BASIN BALD MTN. 9375 15.5 15.8 98 14.4 13.2 109 BEAR TRAP MEADOW 7900 5.5 5.5 100 7.8 5.9 132 BLACKWATER 9780 25.0 16.4 152 21.2 14.0 151 BONE SPRINGS DIV 9350 12.4 12.3 101 12.6 10.8 117 EVENING STAR 9200 27.9 20.9 133 27.7 17.5 158 GRAVE SPRINGS 8550 5.8 7.0 83 8.7 7.0 124 KIRWIN 9550 10.7 7.5 143 12.5 7.9 158 MARQUETTE 8760 6.6 6.0 110 7.3 6.6 111 MIDDLE POWDER 7760 6.5 8.9 73 12.1 8.7 139 OWL CREEK 8975 5.3 3.3 161 5.9 4.5 131 POWDER RIVER PASS 9480 10.0 8.1 123 11.8 8.8 134 SHELL CREEK 9580 13.6 11.7 116 12.6 9.9 127 SYLVAN LAKE 8420 21.9 17.2 127 24.0 15.1 159 SYLVAN ROAD 8120 -M 10.2 * -M 12.6 * TIMBER CREEK 7950 4.6 4.4 105 6.3 4.7 134 YOUNTS PEAK 8350 18.1 13.8 131 15.6 12.9 121 ----- ----- Basin wide percent of average 119 136 SHOSHONE RIVER BLACKWATER 9780 25.0 16.4 152 21.2 14.0 151 EVENING STAR 9200 27.9 20.9 133 27.7 17.5 158 KIRWIN 9550 10.7 7.5 143 12.5 7.9 158 MARQUETTE 8760 6.6 6.0 110 7.3 6.6 111 SYLVAN LAKE 8420 21.9 17.2 127 24.0 15.1 159 SYLVAN ROAD 8120 -M 10.2 * -M 12.6 * YOUNTS PEAK 8350 18.1 13.8 131 15.6 12.9 121 ----- ----- Basin wide percent of average 135 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.5 5.5 100 7.8 5.9 132 BIG GOOSE 7990 4.7 -M * 7.6 -M * BONE SPRINGS DIV 9350 12.4 12.3 101 12.6 10.8 117 BURGESS JUNCTION 7880 6.4 8.8 73 8.3 8.0 104 CLOUD PEAK RESERVOIR 9860 11.4 9.9 115 9.8 9.4 104 DOME LAKE 8880 6.5 10.4 62 8.9 9.7 92 GRAVE SPRINGS 8550 5.8 7.0 83 8.7 7.0 124 HANSEN SAWMILL 8760 4.2 5.3 79 6.8 5.6 121 MIDDLE POWDER 7760 6.5 8.9 73 12.1 8.7 139 POWDER RIVER PASS 9480 10.0 8.1 123 11.8 8.8 134 SUCKER CREEK 8880 7.8 8.9 88 9.9 9.8 101 TIE CREEK 6870 2.6 -M * 6.4 7.7 83 ----- ----- Basin wide percent of average 90 113 BELLE FOURCHE BLIND PARK 6890 5.8 8.4 69 12.9 7.0 184 NORTH RAPID CREEK 6130 4.5 -M * 11.1 -M * WARREN PEAK 6520 6.8 8.4 81 11.2 5.8 193 ----- ----- Basin wide percent of average 75 188 UPPER N. PLATTE RIVER COLUMBINE 9400 16.0 19.0 84 16.4 18.9 87 DIVIDE PEAK 8800 15.7 15.5 101 20.7 17.7 117 ELK RIVER 8700 -M 15.2 * -M 14.3 * JOE WRIGHT 10120 15.9 16.1 99 21.1 18.7 113 NORTH FRENCH CREEK 10100 23.1 18.7 124 23.8 17.4 137 OLD BATTLE 10000 22.4 24.0 93 27.7 22.5 123 SOUTH BRUSH CREEK 8400 -M 8.5 * 16.1 12.0 134 TOWER 10500 34.0 34.5 99 31.7 27.7 114 WEBBER SPRINGS 9200 15.1 20.5 74 20.8 19.1 109 WILLOW CREEK PASS 9540 9.8 8.5 115 10.2 9.1 112 ----- ----- Basin wide percent of average 97 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.5 18.3 90 17.8 14.2 125 CASPER MTN. 7900 9.1 11.1 82 14.0 9.9 141 DEADMAN HILL 10220 12.8 12.6 102 14.4 11.9 121 DEER PARK 9700 14.6 -M * 18.7 -M * LAPRELE CREEK 8320 .5 7.7 6 11.7 8.5 138 RENO HILL 8400 10.7 9.8 109 15.1 13.3 114 ROACH 9700 14.0 12.8 109 15.5 16.1 96 SAND LAKE 10080 26.3 24.7 106 22.9 15.1 152 SOUTH PASS 9040 15.5 13.0 119 16.6 12.6 132 WINDY PEAK 7840 4.8 5.5 87 10.4 6.6 158 ----- ----- Basin wide percent of average 95 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.5 8.8 131 15.0 11.9 126 DIVIDE PEAK 8800 15.7 15.5 101 20.7 17.7 117 OLD BATTLE 10000 22.4 24.0 93 27.7 22.5 123 SANDSTONE RS 8150 10.9 11.1 98 17.3 14.6 118 WHISKEY PARK 8950 20.5 21.6 95 22.9 21.5 107 ----- ----- Basin wide percent of average 100 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.3 11.0 121 12.6 13.5 93 BLIND BULL SUM 8650 24.0 22.3 108 19.0 19.4 98 EAST RIM DIVIDE 7930 11.6 10.9 106 11.9 12.6 94 ELKHART PARK G.S. 9400 11.5 10.6 108 12.0 13.3 90 GROS VENTRE SUMMIT 8775 13.0 12.0 108 12.8 13.2 97 KENDALL R.S. 7740 13.3 11.5 116 12.8 12.9 99 LOOMIS PARK 8240 -M 13.7 * 17.0 15.6 109 NEW FORK LAKE 8340 10.6 9.1 116 10.4 12.0 87 SNIDER BASIN 8250 13.4 11.6 116 13.4 12.6 106 SPRING CREEK DIVIDE 9000 22.9 21.3 108 22.8 22.3 102 TRIPLE PEAK 8500 21.2 20.1 105 22.4 25.9 86 ----- ----- Basin wide percent of average 110 96 LOWER GREEN RIVER HAMS FORK 7840 10.6 9.6 110 9.1 11.1 82 HEWINTA 9500 8.3 7.6 109 10.7 9.5 113 HICKERSON PARK 9150 5.5 4.5 122 8.1 6.7 121 HOLE-IN-ROCK 9150 5.5 4.0 138 8.3 6.7 124 INDIAN CREEK 9425 23.2 21.1 110 19.3 20.9 92 KELLEY R.S. 8180 13.7 12.9 106 15.3 15.6 98 STEEL CREEK PARK 10100 10.9 11.3 96 12.8 9.6 133 ----- ----- Basin wide percent of average 109 104 UPPER BEAR RIVER BUG LAKE 7950 16.8 15.3 110 15.7 14.7 107 HAYDEN FORK 9400 11.5 12.4 93 15.0 13.9 108 KELLEY R.S. 8180 13.7 12.9 106 15.3 15.6 98 LILY LAKE 9050 10.5 9.7 108 14.2 10.8 131 MONTE CRISTO 8960 20.5 20.7 99 20.9 19.1 109 SALT RIVER SUMMIT 7600 13.0 10.9 119 15.1 14.0 108 TRIAL LAKE 9960 16.0 18.8 85 16.9 17.9 94 ----- ----- Basin wide percent of average 101 107 ----------------------------------------------------------------------------- -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.