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: JANUARY 23 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.3 11.2 128 16.2 14.8 109 COTTONWOOD CREEK 7600 13.3 12.7 105 16.4 15.7 104 GRANITE CREEK 6770 11.4 11.0 104 13.4 15.6 86 GRASSY LAKE 7265 24.6 20.6 119 24.8 24.0 103 GROS VENTRE SUMMIT 8775 8.7 9.6 91 8.9 10.6 84 LEWIS LAKE DIVIDE 7860 23.4 20.4 115 24.5 24.5 100 PHILLIPS BENCH 8200 18.2 17.2 106 17.2 19.3 89 SALT RIVER SUMMIT 7600 8.2 7.9 104 10.5 11.2 94 SNAKE RIVER STATION 6920 13.6 11.1 123 16.4 16.9 97 SPRING CREEK DIVIDE 9000 16.0 16.3 98 16.3 17.6 93 THUMB DIVIDE 7980 13.7 10.3 133 13.7 13.9 99 TOGWOTEE PASS 9580 -M 15.3 * 18.5 18.3 101 TWO OCEAN PLATEAU 9360 22.7 16.7 136 19.7 20.5 96 WILLOW CREEK 8450 18.1 18.8 96 23.1 20.7 112 ----- ----- Basin wide percent of average 112 98 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.0 14.8 122 16.1 11.1 145 BLACK BEAR 7950 29.5 22.0 134 -M 23.8 * CANYON 7940 11.5 7.5 153 12.4 9.0 138 FISHER CREEK 9100 26.3 21.9 120 23.2 22.1 105 MADISON PLATEAU 7750 -M 14.5 * 18.0 15.7 115 NORTHEAST ENTRANCE 7350 7.9 5.8 136 9.8 7.6 129 PARKER PEAK 9400 15.4 13.3 116 -M 9.7 * SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161 THUMB DIVIDE 7980 13.7 10.3 133 13.7 13.9 99 TWO OCEAN PLATEAU 9360 22.7 16.7 136 19.7 20.5 96 WHISKEY CREEK 6800 12.5 10.0 125 14.9 13.0 115 WHITE MILL 8700 17.2 15.4 112 15.6 17.4 90 WOLVERINE 7650 10.9 7.2 151 9.1 8.1 112 ----- ----- Basin wide percent of average 128 114 WIND RIVER BURROUGHS CREEK 8750 11.0 9.5 116 11.9 10.4 114 COLD SPRINGS 9630 6.2 5.4 115 7.8 6.5 120 DEER PARK 9700 9.2 -M * 12.7 -M * HOBBS PARK 10100 9.6 9.4 102 9.9 8.5 116 LITTLE WARM 9620 8.4 6.6 127 9.4 8.2 115 SOUTH PASS 9040 10.3 10.5 98 11.7 10.0 117 ST. LAWRENCE ALT 8620 4.4 4.4 100 7.0 5.9 119 TOGWOTEE PASS 9580 -M 15.3 * 18.5 18.3 101 TOWNSEND CREEK 8700 5.2 5.7 91 7.7 7.2 107 ----- ----- Basin wide percent of average 107 112 BIGHORN BASIN BALD MTN. 9375 13.4 12.8 105 12.5 10.8 116 BEAR TRAP MEADOW 7900 4.4 4.5 98 7.0 5.1 137 BLACKWATER 9780 19.6 12.9 152 17.1 11.2 153 BONE SPRINGS DIV 9350 10.3 9.9 104 10.4 8.7 120 EVENING STAR 9200 22.8 16.5 138 23.1 14.0 165 GRAVE SPRINGS 8550 4.6 5.7 81 7.7 6.0 128 KIRWIN 9550 7.9 6.2 127 9.2 6.3 146 MARQUETTE 8760 5.4 4.8 113 6.2 5.5 113 MIDDLE POWDER 7760 4.8 7.3 66 10.8 7.3 148 OWL CREEK 8975 3.8 2.6 146 4.4 3.5 126 POWDER RIVER PASS 9480 8.0 6.5 123 10.0 7.2 139 SHELL CREEK 9580 11.5 9.5 121 10.7 8.2 130 SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161 SYLVAN ROAD 8120 11.7 7.7 152 13.5 10.2 132 TIMBER CREEK 7950 3.6 3.3 109 5.4 3.9 138 YOUNTS PEAK 8350 14.0 11.3 124 12.2 10.3 118 ----- ----- Basin wide percent of average 121 138 SHOSHONE RIVER BLACKWATER 9780 19.6 12.9 152 17.1 11.2 153 EVENING STAR 9200 22.8 16.5 138 23.1 14.0 165 KIRWIN 9550 7.9 6.2 127 9.2 6.3 146 MARQUETTE 8760 5.4 4.8 113 6.2 5.5 113 SYLVAN LAKE 8420 17.4 13.8 126 19.7 12.2 161 SYLVAN ROAD 8120 11.7 7.7 152 13.5 10.2 132 YOUNTS PEAK 8350 14.0 11.3 124 12.2 10.3 118 ----- ----- Basin wide percent of average 135 145 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.4 4.5 98 7.0 5.1 137 BIG GOOSE 7990 3.6 -M * 6.4 -M * BONE SPRINGS DIV 9350 10.3 9.9 104 10.4 8.7 120 BURGESS JUNCTION 7880 5.1 7.0 73 7.1 6.7 106 CLOUD PEAK RESERVOIR 9860 9.2 7.3 126 7.1 7.5 95 DOME LAKE 8880 5.3 8.3 64 7.2 8.2 88 GRAVE SPRINGS 8550 4.6 5.7 81 7.7 6.0 128 HANSEN SAWMILL 8760 3.4 4.2 81 5.6 4.7 119 MIDDLE POWDER 7760 4.8 7.3 66 10.8 7.3 148 POWDER RIVER PASS 9480 8.0 6.5 123 10.0 7.2 139 SUCKER CREEK 8880 6.5 6.8 96 8.5 8.0 106 TIE CREEK 6870 2.2 -M * 5.7 6.4 89 ----- ----- Basin wide percent of average 91 115 BELLE FOURCHE BLIND PARK 6890 4.9 6.7 73 11.9 5.7 209 NORTH RAPID CREEK 6130 3.8 -M * 10.3 -M * WARREN PEAK 6520 5.8 6.7 87 10.8 4.8 225 ----- ----- Basin wide percent of average 80 216 UPPER N. PLATTE RIVER COLUMBINE 9400 12.8 14.2 90 14.2 14.8 96 DIVIDE PEAK 8800 11.3 12.3 92 16.7 14.9 112 ELK RIVER 8700 -M 11.3 * 14.6 11.4 128 JOE WRIGHT 10120 12.8 13.0 98 17.9 15.1 119 NORTH FRENCH CREEK 10100 18.1 14.7 123 19.1 13.9 137 OLD BATTLE 10000 16.3 18.9 86 22.3 17.9 125 SOUTH BRUSH CREEK 8400 5.7 6.5 88 13.7 10.5 130 TOWER 10500 25.7 27.1 95 25.2 22.0 115 WEBBER SPRINGS 9200 11.7 16.0 73 16.6 15.6 106 WILLOW CREEK PASS 9540 6.5 6.9 94 8.1 7.3 111 ----- ----- Basin wide percent of average 93 117 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 12.2 14.9 82 14.7 11.1 132 CASPER MTN. 7900 5.1 8.8 58 10.6 8.2 129 DEADMAN HILL 10220 10.7 10.3 104 12.3 9.5 129 DEER PARK 9700 9.2 -M * 12.7 -M * LAPRELE CREEK 8320 1.8 6.1 30 8.6 6.9 125 RENO HILL 8400 7.1 7.8 91 11.4 10.9 105 ROACH 9700 11.0 10.1 109 13.8 13.0 106 SAND LAKE 10080 19.8 19.5 102 19.1 12.0 159 SOUTH PASS 9040 10.3 10.5 98 11.7 10.0 117 WINDY PEAK 7840 2.7 4.1 66 8.2 5.4 152 ----- ----- Basin wide percent of average 88 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.6 6.7 99 11.2 9.9 113 DIVIDE PEAK 8800 11.3 12.3 92 16.7 14.9 112 OLD BATTLE 10000 16.3 18.9 86 22.3 17.9 125 SANDSTONE RS 8150 6.7 8.5 79 13.2 12.1 109 WHISKEY PARK 8950 15.0 16.9 89 19.2 17.6 109 ----- ----- Basin wide percent of average 88 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.8 8.6 114 9.1 10.8 84 BLIND BULL SUM 8650 16.6 17.3 96 13.8 15.1 91 EAST RIM DIVIDE 7930 7.8 8.3 94 8.2 10.1 81 ELKHART PARK G.S. 9400 7.9 8.1 98 8.5 10.6 80 GROS VENTRE SUMMIT 8775 8.7 9.6 91 8.9 10.6 84 KENDALL R.S. 7740 8.6 8.9 97 9.2 10.3 89 LOOMIS PARK 8240 8.8 10.4 85 11.9 12.6 94 NEW FORK LAKE 8340 7.0 7.0 100 7.3 9.6 76 SNIDER BASIN 8250 8.3 8.8 94 9.0 10.1 89 SPRING CREEK DIVIDE 9000 16.0 16.3 98 16.3 17.6 93 TRIPLE PEAK 8500 15.3 15.6 98 16.9 20.6 82 ----- ----- Basin wide percent of average 97 86 LOWER GREEN RIVER HAMS FORK 7840 6.7 7.1 94 6.5 8.9 73 HEWINTA 9500 5.2 5.6 93 8.1 7.8 104 HICKERSON PARK 9150 3.1 3.2 97 5.9 5.7 104 HOLE-IN-ROCK 9150 3.8 2.9 131 6.5 5.7 114 INDIAN CREEK 9425 15.0 16.3 92 13.0 16.6 78 KELLEY R.S. 8180 9.1 9.6 95 10.8 12.5 86 STEEL CREEK PARK 10100 7.7 9.1 85 9.6 8.1 119 ----- ----- Basin wide percent of average 94 92 UPPER BEAR RIVER BUG LAKE 7950 9.0 11.8 76 10.5 11.8 89 HAYDEN FORK 9400 7.7 9.4 82 11.3 11.0 103 KELLEY R.S. 8180 9.1 9.6 95 10.8 12.5 86 LILY LAKE 9050 7.3 7.6 96 10.4 8.8 118 MONTE CRISTO 8960 13.4 15.7 85 15.1 15.3 99 SALT RIVER SUMMIT 7600 8.2 7.9 104 10.5 11.2 94 TRIAL LAKE 9960 9.6 14.6 66 10.7 14.0 76 ----- ----- Basin wide percent of average 84 94 ----------------------------------------------------------------------------- -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.