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 15 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.8 14.1 133 -M 18.2 * COTTONWOOD CREEK 7600 18.0 16.4 110 20.8 19.8 105 GRANITE CREEK 6770 16.6 13.9 119 18.5 19.2 96 GRASSY LAKE 7265 31.6 29.8 106 31.4 29.5 106 GROS VENTRE SUMMIT 8775 12.6 11.7 108 12.4 12.9 96 LEWIS LAKE DIVIDE 7860 30.9 26.4 117 28.5 30.0 95 PHILLIPS BENCH 8200 24.8 22.0 113 23.2 23.7 98 SALT RIVER SUMMIT 7600 12.4 10.6 117 14.5 13.7 106 SNAKE RIVER STATION 6920 16.9 14.5 117 20.3 20.7 98 SPRING CREEK DIVIDE 9000 22.1 20.7 107 22.1 21.8 101 THUMB DIVIDE 7980 18.8 12.9 146 18.0 17.1 105 TOGWOTEE PASS 9580 -M 18.9 * 23.1 22.4 103 TWO OCEAN PLATEAU 9360 29.2 20.4 143 23.3 25.1 93 WILLOW CREEK 8450 25.2 23.8 106 29.1 25.7 113 ----- ----- Basin wide percent of average 117 101 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 21.1 18.0 117 19.0 13.6 140 BLACK BEAR 7950 39.7 28.3 140 -M 30.1 * CANYON 7940 14.9 9.5 157 15.4 11.0 140 FISHER CREEK 9100 32.0 27.3 117 -M 27.7 * MADISON PLATEAU 7750 -M 18.5 * 23.9 19.6 122 NORTHEAST ENTRANCE 7350 9.7 7.3 133 11.5 9.3 124 PARKER PEAK 9400 18.8 16.2 116 -M 11.8 * SYLVAN LAKE 8420 21.4 16.8 127 23.4 14.8 158 THUMB DIVIDE 7980 18.8 12.9 146 18.0 17.1 105 TWO OCEAN PLATEAU 9360 29.2 20.4 143 23.3 25.1 93 WHISKEY CREEK 6800 16.7 12.8 130 19.0 16.2 117 WHITE MILL 8700 21.1 19.3 109 19.0 21.6 88 WOLVERINE 7650 12.0 9.1 132 11.0 9.9 111 ----- ----- Basin wide percent of average 129 116 WIND RIVER BURROUGHS CREEK 8750 14.0 11.9 118 15.2 12.7 120 COLD SPRINGS 9630 8.1 6.4 127 9.9 7.7 129 DEER PARK 9700 14.3 -M * 18.6 -M * HOBBS PARK 10100 14.4 11.0 131 13.4 10.2 131 LITTLE WARM 9620 11.3 8.2 138 12.4 9.9 125 SOUTH PASS 9040 15.3 12.7 120 16.4 12.3 133 ST. LAWRENCE ALT 8620 6.3 5.5 115 9.1 7.2 126 TOGWOTEE PASS 9580 -M 18.9 * 23.1 22.4 103 TOWNSEND CREEK 8700 8.4 7.1 118 11.1 8.8 126 ----- ----- Basin wide percent of average 124 121 BIGHORN BASIN BALD MTN. 9375 15.0 15.5 97 14.0 12.9 109 BEAR TRAP MEADOW 7900 5.4 5.4 100 7.7 5.9 131 BLACKWATER 9780 24.4 16.0 152 20.5 13.7 150 BONE SPRINGS DIV 9350 12.4 12.0 103 12.5 10.6 118 EVENING STAR 9200 27.3 20.4 134 27.6 17.2 160 GRAVE SPRINGS 8550 5.6 6.8 82 8.5 6.9 123 KIRWIN 9550 10.6 7.3 145 12.2 7.7 158 MARQUETTE 8760 6.7 5.9 114 7.5 6.5 115 MIDDLE POWDER 7760 6.3 8.7 72 12.0 8.5 141 OWL CREEK 8975 5.3 3.2 166 6.0 4.4 136 POWDER RIVER PASS 9480 9.8 7.9 124 11.9 8.6 138 SHELL CREEK 9580 13.3 11.5 116 12.5 9.8 128 SYLVAN LAKE 8420 21.4 16.8 127 23.4 14.8 158 SYLVAN ROAD 8120 14.2 9.9 143 16.2 12.4 131 TIMBER CREEK 7950 4.5 4.3 105 6.3 4.7 134 YOUNTS PEAK 8350 17.5 13.5 130 15.4 12.6 122 ----- ----- Basin wide percent of average 121 136 SHOSHONE RIVER BLACKWATER 9780 24.4 16.0 152 20.5 13.7 150 EVENING STAR 9200 27.3 20.4 134 27.6 17.2 160 KIRWIN 9550 10.6 7.3 145 12.2 7.7 158 MARQUETTE 8760 6.7 5.9 114 7.5 6.5 115 SYLVAN LAKE 8420 21.4 16.8 127 23.4 14.8 158 SYLVAN ROAD 8120 14.2 9.9 143 16.2 12.4 131 YOUNTS PEAK 8350 17.5 13.5 130 15.4 12.6 122 ----- ----- Basin wide percent of average 136 145 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.4 5.4 100 7.7 5.9 131 BIG GOOSE 7990 4.7 -M * 7.8 -M * BONE SPRINGS DIV 9350 12.4 12.0 103 12.5 10.6 118 BURGESS JUNCTION 7880 6.3 8.6 73 8.2 7.9 104 CLOUD PEAK RESERVOIR 9860 11.4 9.6 119 9.9 9.2 108 DOME LAKE 8880 6.6 10.1 65 8.7 9.6 91 GRAVE SPRINGS 8550 5.6 6.8 82 8.5 6.9 123 HANSEN SAWMILL 8760 4.5 5.2 87 6.8 5.5 124 MIDDLE POWDER 7760 6.3 8.7 72 12.0 8.5 141 POWDER RIVER PASS 9480 9.8 7.9 124 11.9 8.6 138 SUCKER CREEK 8880 7.8 8.7 90 10.2 9.6 106 TIE CREEK 6870 2.6 -M * 6.3 7.5 84 ----- ----- Basin wide percent of average 92 114 BELLE FOURCHE BLIND PARK 6890 5.5 8.2 67 12.5 6.9 181 NORTH RAPID CREEK 6130 4.3 -M * 10.9 -M * WARREN PEAK 6520 6.4 8.2 78 11.0 5.7 193 ----- ----- Basin wide percent of average 73 187 UPPER N. PLATTE RIVER COLUMBINE 9400 15.5 18.4 84 16.7 18.5 90 DIVIDE PEAK 8800 15.3 15.1 101 20.7 17.4 119 ELK RIVER 8700 -M 14.8 * 18.3 14.0 131 JOE WRIGHT 10120 15.8 15.8 100 21.2 18.4 115 NORTH FRENCH CREEK 10100 22.4 18.2 123 23.2 17.0 136 OLD BATTLE 10000 21.5 23.4 92 27.8 22.0 126 SOUTH BRUSH CREEK 8400 5.3 8.2 65 16.1 11.8 136 TOWER 10500 32.8 33.8 97 31.0 27.1 114 WEBBER SPRINGS 9200 14.5 20.0 73 20.3 18.7 109 WILLOW CREEK PASS 9540 9.5 8.3 114 10.3 8.9 116 ----- ----- Basin wide percent of average 95 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.6 17.9 87 17.1 13.8 124 CASPER MTN. 7900 8.3 10.8 77 13.3 9.7 137 DEADMAN HILL 10220 12.9 12.4 104 14.3 11.7 122 DEER PARK 9700 14.3 -M * 18.6 -M * LAPRELE CREEK 8320 .6 7.5 8 10.8 8.4 129 RENO HILL 8400 9.7 9.5 102 14.3 13.0 110 ROACH 9700 13.6 12.5 109 16.0 15.8 101 SAND LAKE 10080 25.1 24.1 104 22.2 14.8 150 SOUTH PASS 9040 15.3 12.7 120 16.4 12.3 133 WINDY PEAK 7840 4.1 5.3 77 10.2 6.5 157 ----- ----- Basin wide percent of average 93 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.7 8.5 126 14.8 11.8 125 DIVIDE PEAK 8800 15.3 15.1 101 20.7 17.4 119 OLD BATTLE 10000 21.5 23.4 92 27.8 22.0 126 SANDSTONE RS 8150 10.0 10.8 93 16.8 14.4 117 WHISKEY PARK 8950 19.6 21.0 93 22.9 21.3 108 ----- ----- Basin wide percent of average 98 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.2 10.7 123 12.3 13.2 93 BLIND BULL SUM 8650 23.0 21.8 106 18.4 18.9 97 EAST RIM DIVIDE 7930 11.2 10.6 106 11.5 12.4 93 ELKHART PARK G.S. 9400 11.3 10.4 109 11.8 13.0 91 GROS VENTRE SUMMIT 8775 12.6 11.7 108 12.4 12.9 96 KENDALL R.S. 7740 12.8 11.2 114 12.6 12.6 100 LOOMIS PARK 8240 -M 13.4 * 16.4 15.3 107 NEW FORK LAKE 8340 10.3 8.9 116 10.4 11.8 88 SNIDER BASIN 8250 12.8 11.3 113 12.9 12.4 104 SPRING CREEK DIVIDE 9000 22.1 20.7 107 22.1 21.8 101 TRIPLE PEAK 8500 20.5 19.7 104 21.9 25.3 87 ----- ----- Basin wide percent of average 109 96 LOWER GREEN RIVER HAMS FORK 7840 10.1 9.4 107 8.8 10.9 81 HEWINTA 9500 7.8 7.3 107 10.5 9.3 113 HICKERSON PARK 9150 5.2 4.3 121 7.7 6.6 117 HOLE-IN-ROCK 9150 5.1 3.9 131 8.1 6.6 123 INDIAN CREEK 9425 22.5 20.6 109 18.8 20.4 92 KELLEY R.S. 8180 13.1 12.6 104 14.8 15.2 97 STEEL CREEK PARK 10100 10.3 10.9 94 12.4 9.5 131 ----- ----- Basin wide percent of average 107 103 UPPER BEAR RIVER BUG LAKE 7950 15.7 14.8 106 14.9 14.4 103 HAYDEN FORK 9400 10.9 12.0 91 14.8 13.6 109 KELLEY R.S. 8180 13.1 12.6 104 14.8 15.2 97 LILY LAKE 9050 9.9 9.5 104 13.7 10.6 129 MONTE CRISTO 8960 19.5 19.9 98 20.2 18.7 108 SALT RIVER SUMMIT 7600 12.4 10.6 117 14.5 13.7 106 TRIAL LAKE 9960 15.2 18.2 84 16.2 17.5 93 ----- ----- Basin wide percent of average 99 105 ----------------------------------------------------------------------------- -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.