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 FRIDAY: FEBRUARY 12 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.4 13.8 133 -M 17.8 * COTTONWOOD CREEK 7600 17.8 15.9 112 20.0 19.3 104 GRANITE CREEK 6770 16.3 13.6 120 18.3 18.7 98 GRASSY LAKE 7265 30.6 28.3 108 30.5 28.8 106 GROS VENTRE SUMMIT 8775 12.3 11.5 107 12.2 12.6 97 LEWIS LAKE DIVIDE 7860 30.0 25.6 117 27.7 29.3 95 PHILLIPS BENCH 8200 24.3 21.4 114 23.0 23.2 99 SALT RIVER SUMMIT 7600 12.2 10.3 118 14.2 13.4 106 SNAKE RIVER STATION 6920 16.5 14.1 117 -M 20.3 * SPRING CREEK DIVIDE 9000 21.8 20.2 108 20.2 21.2 95 THUMB DIVIDE 7980 18.3 12.6 145 17.5 16.7 105 TOGWOTEE PASS 9580 -M 18.5 * 22.9 21.9 105 TWO OCEAN PLATEAU 9360 28.6 19.9 144 22.6 24.5 92 WILLOW CREEK 8450 24.6 23.2 106 28.3 25.1 113 ----- ----- Basin wide percent of average 118 101 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.6 17.6 117 18.5 13.3 139 BLACK BEAR 7950 38.8 27.5 141 -M 29.3 * CANYON 7940 14.4 9.2 157 15.1 10.8 140 FISHER CREEK 9100 31.7 26.6 119 -M 27.0 * MADISON PLATEAU 7750 -M 18.0 * 23.5 19.1 123 NORTHEAST ENTRANCE 7350 9.5 7.1 134 11.3 9.0 126 PARKER PEAK 9400 18.4 15.8 116 -M 11.5 * SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160 THUMB DIVIDE 7980 18.3 12.6 145 17.5 16.7 105 TWO OCEAN PLATEAU 9360 28.6 19.9 144 22.6 24.5 92 WHISKEY CREEK 6800 16.7 12.5 134 19.1 15.8 121 WHITE MILL 8700 20.9 18.8 111 18.8 21.1 89 WOLVERINE 7650 11.8 8.8 134 10.8 9.7 111 ----- ----- Basin wide percent of average 130 117 WIND RIVER BURROUGHS CREEK 8750 13.9 11.6 120 15.2 12.4 123 COLD SPRINGS 9630 7.9 6.3 125 9.8 7.5 131 DEER PARK 9700 14.3 -M * 18.6 -M * HOBBS PARK 10100 14.2 10.8 131 13.4 10.0 134 LITTLE WARM 9620 11.0 8.0 138 12.2 9.6 127 SOUTH PASS 9040 15.2 12.4 123 16.3 12.0 136 ST. LAWRENCE ALT 8620 6.2 5.4 115 9.2 7.0 131 TOGWOTEE PASS 9580 -M 18.5 * 22.9 21.9 105 TOWNSEND CREEK 8700 8.2 6.9 119 10.9 8.6 127 ----- ----- Basin wide percent of average 125 123 BIGHORN BASIN BALD MTN. 9375 14.8 15.1 98 13.3 12.6 106 BEAR TRAP MEADOW 7900 5.4 5.3 102 7.6 5.8 131 BLACKWATER 9780 23.8 15.6 153 20.1 13.4 150 BONE SPRINGS DIV 9350 11.7 11.7 100 11.7 10.3 114 EVENING STAR 9200 27.0 19.8 136 26.9 16.8 160 GRAVE SPRINGS 8550 5.3 6.7 79 8.5 6.8 125 KIRWIN 9550 10.2 7.2 142 11.8 7.5 157 MARQUETTE 8760 6.5 5.7 114 7.2 6.3 114 MIDDLE POWDER 7760 6.1 8.5 72 11.7 8.3 141 OWL CREEK 8975 5.1 3.1 165 5.6 4.2 133 POWDER RIVER PASS 9480 9.5 7.7 123 11.5 8.4 137 SHELL CREEK 9580 12.9 11.2 115 12.6 9.6 131 SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160 SYLVAN ROAD 8120 -M 9.6 * -M 12.1 * TIMBER CREEK 7950 4.4 4.2 105 6.2 4.6 135 YOUNTS PEAK 8350 17.3 13.2 131 15.1 12.3 123 ----- ----- Basin wide percent of average 119 136 SHOSHONE RIVER BLACKWATER 9780 23.8 15.6 153 20.1 13.4 150 EVENING STAR 9200 27.0 19.8 136 26.9 16.8 160 KIRWIN 9550 10.2 7.2 142 11.8 7.5 157 MARQUETTE 8760 6.5 5.7 114 7.2 6.3 114 SYLVAN LAKE 8420 20.8 16.4 127 23.0 14.4 160 SYLVAN ROAD 8120 -M 9.6 * -M 12.1 * YOUNTS PEAK 8350 17.3 13.2 131 15.1 12.3 123 ----- ----- Basin wide percent of average 136 147 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.4 5.3 102 7.6 5.8 131 BIG GOOSE 7990 4.6 -M * 7.5 -M * BONE SPRINGS DIV 9350 11.7 11.7 100 11.7 10.3 114 BURGESS JUNCTION 7880 6.0 8.4 71 8.0 7.7 104 CLOUD PEAK RESERVOIR 9860 11.1 9.3 119 9.6 9.0 107 DOME LAKE 8880 6.3 9.9 64 8.6 9.4 91 GRAVE SPRINGS 8550 5.3 6.7 79 8.5 6.8 125 HANSEN SAWMILL 8760 4.1 5.1 80 6.8 5.4 126 MIDDLE POWDER 7760 6.1 8.5 72 11.7 8.3 141 POWDER RIVER PASS 9480 9.5 7.7 123 11.5 8.4 137 SUCKER CREEK 8880 7.5 8.4 89 9.7 9.3 104 TIE CREEK 6870 2.5 -M * 6.2 7.3 85 ----- ----- Basin wide percent of average 90 114 BELLE FOURCHE BLIND PARK 6890 5.4 8.0 68 12.4 6.7 185 NORTH RAPID CREEK 6130 4.2 -M * 10.7 -M * WARREN PEAK 6520 6.4 8.0 80 10.9 5.6 195 ----- ----- Basin wide percent of average 74 189 UPPER N. PLATTE RIVER COLUMBINE 9400 15.3 17.8 86 16.0 18.0 89 DIVIDE PEAK 8800 15.2 14.7 103 20.2 17.1 118 ELK RIVER 8700 -M 14.3 * 17.6 13.7 128 JOE WRIGHT 10120 15.5 15.4 101 20.9 18.0 116 NORTH FRENCH CREEK 10100 22.1 17.7 125 23.2 16.6 140 OLD BATTLE 10000 21.4 22.8 94 27.4 21.4 128 SOUTH BRUSH CREEK 8400 5.4 8.0 68 15.8 11.6 136 TOWER 10500 32.7 33.0 99 30.9 26.4 117 WEBBER SPRINGS 9200 14.5 19.4 75 20.1 18.2 110 WILLOW CREEK PASS 9540 9.2 8.1 114 9.1 8.6 106 ----- ----- Basin wide percent of average 96 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.2 17.5 87 17.0 13.4 127 CASPER MTN. 7900 7.9 10.5 75 13.0 9.5 137 DEADMAN HILL 10220 -M 12.1 * 13.5 11.4 118 DEER PARK 9700 14.3 -M * 18.6 -M * LAPRELE CREEK 8320 1.2 7.3 16 10.5 8.2 128 RENO HILL 8400 9.7 9.2 105 13.9 12.7 109 ROACH 9700 13.4 12.2 110 15.8 15.4 103 SAND LAKE 10080 24.6 23.5 105 22.1 14.4 153 SOUTH PASS 9040 15.2 12.4 123 16.3 12.0 136 WINDY PEAK 7840 3.8 5.1 75 9.8 6.4 153 ----- ----- Basin wide percent of average 93 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.8 8.2 132 14.6 11.6 126 DIVIDE PEAK 8800 15.2 14.7 103 20.2 17.1 118 OLD BATTLE 10000 21.4 22.8 94 27.4 21.4 128 SANDSTONE RS 8150 9.8 10.5 93 16.8 14.1 119 WHISKEY PARK 8950 19.4 20.4 95 22.4 21.0 107 ----- ----- Basin wide percent of average 100 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 12.9 10.5 123 12.1 12.9 94 BLIND BULL SUM 8650 22.5 21.2 106 18.1 18.5 98 EAST RIM DIVIDE 7930 11.0 10.3 107 11.3 12.1 93 ELKHART PARK G.S. 9400 11.1 10.1 110 11.7 12.7 92 GROS VENTRE SUMMIT 8775 12.3 11.5 107 12.2 12.6 97 KENDALL R.S. 7740 12.6 10.9 116 12.6 12.3 102 LOOMIS PARK 8240 -M 13.0 * 16.2 15.0 108 NEW FORK LAKE 8340 10.2 8.7 117 10.0 11.5 87 SNIDER BASIN 8250 12.5 11.0 114 12.6 12.1 104 SPRING CREEK DIVIDE 9000 21.8 20.2 108 20.2 21.2 95 TRIPLE PEAK 8500 20.1 19.2 105 20.7 24.7 84 ----- ----- Basin wide percent of average 110 95 LOWER GREEN RIVER HAMS FORK 7840 10.0 9.1 110 8.7 10.6 82 HEWINTA 9500 7.4 7.1 104 10.5 9.1 115 HICKERSON PARK 9150 5.1 4.1 124 7.6 6.5 117 HOLE-IN-ROCK 9150 5.0 3.8 132 7.9 6.5 122 INDIAN CREEK 9425 22.1 20.0 111 18.4 20.0 92 KELLEY R.S. 8180 13.0 12.2 107 14.6 14.9 98 STEEL CREEK PARK 10100 10.4 10.7 97 12.2 9.3 131 ----- ----- Basin wide percent of average 109 104 UPPER BEAR RIVER BUG LAKE 7950 15.4 14.4 107 14.5 14.0 104 HAYDEN FORK 9400 10.7 11.6 92 14.4 13.2 109 KELLEY R.S. 8180 13.0 12.2 107 14.6 14.9 98 LILY LAKE 9050 9.9 9.2 108 13.7 10.4 132 MONTE CRISTO 8960 19.3 19.3 100 20.1 18.2 110 SALT RIVER SUMMIT 7600 12.2 10.3 118 14.2 13.4 106 TRIAL LAKE 9960 15.2 17.7 86 16.2 17.0 95 ----- ----- 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.