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 WEDNESDAY: JANUARY 20 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.5 10.8 125 15.4 14.3 108 COTTONWOOD CREEK 7600 12.0 12.2 98 15.1 15.2 99 GRANITE CREEK 6770 10.4 10.5 99 12.4 15.1 82 GRASSY LAKE 7265 22.8 19.8 115 23.4 23.2 101 GROS VENTRE SUMMIT 8775 8.0 9.3 86 8.3 10.2 81 LEWIS LAKE DIVIDE 7860 21.7 19.6 111 23.2 23.6 98 PHILLIPS BENCH 8200 16.7 16.5 101 16.8 18.6 90 SALT RIVER SUMMIT 7600 7.5 7.6 99 9.8 10.8 91 SNAKE RIVER STATION 6920 12.4 10.7 116 15.2 16.4 93 SPRING CREEK DIVIDE 9000 15.0 15.7 96 15.3 17.0 90 THUMB DIVIDE 7980 12.8 9.9 129 13.0 13.4 97 TOGWOTEE PASS 9580 -M 14.8 * 17.9 17.7 101 TWO OCEAN PLATEAU 9360 21.7 16.2 134 19.2 19.8 97 WILLOW CREEK 8450 16.0 18.0 89 21.1 20.0 106 ----- ----- Basin wide percent of average 108 96 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.4 14.4 121 15.7 10.7 147 BLACK BEAR 7950 27.4 21.2 129 23.1 22.9 101 CANYON 7940 10.9 7.2 151 11.9 8.7 137 FISHER CREEK 9100 25.4 21.1 120 22.6 21.3 106 MADISON PLATEAU 7750 -M 13.9 * 17.4 15.1 115 NORTHEAST ENTRANCE 7350 7.8 5.6 139 9.6 7.3 132 PARKER PEAK 9400 15.0 13.0 115 -M 9.4 * SYLVAN LAKE 8420 16.7 13.4 125 19.1 11.9 161 THUMB DIVIDE 7980 12.8 9.9 129 13.0 13.4 97 TWO OCEAN PLATEAU 9360 21.7 16.2 134 19.2 19.8 97 WHISKEY CREEK 6800 11.4 9.6 119 14.0 12.6 111 WHITE MILL 8700 16.5 14.9 111 15.1 16.8 90 WOLVERINE 7650 10.6 6.9 154 8.7 7.9 110 ----- ----- Basin wide percent of average 126 112 WIND RIVER BURROUGHS CREEK 8750 10.6 9.2 115 11.5 10.1 114 COLD SPRINGS 9630 6.0 5.3 113 7.6 6.4 119 DEER PARK 9700 8.3 -M * 11.8 -M * HOBBS PARK 10100 9.2 9.2 100 9.4 8.3 113 LITTLE WARM 9620 8.0 6.4 125 9.2 8.0 115 SOUTH PASS 9040 9.4 10.2 92 10.9 9.7 112 ST. LAWRENCE ALT 8620 4.1 4.2 98 6.8 5.8 117 TOGWOTEE PASS 9580 -M 14.8 * 17.9 17.7 101 TOWNSEND CREEK 8700 4.9 5.6 88 7.5 7.0 107 ----- ----- Basin wide percent of average 104 111 BIGHORN BASIN BALD MTN. 9375 13.3 12.5 106 12.5 10.5 119 BEAR TRAP MEADOW 7900 4.2 4.4 95 6.8 5.0 136 BLACKWATER 9780 19.1 12.5 153 16.6 10.9 152 BONE SPRINGS DIV 9350 10.3 9.6 107 10.5 8.4 125 EVENING STAR 9200 22.2 16.1 138 23.0 13.6 169 GRAVE SPRINGS 8550 4.7 5.5 85 7.7 5.9 131 KIRWIN 9550 7.8 6.1 128 9.1 6.2 147 MARQUETTE 8760 5.5 4.7 117 6.3 5.4 117 MIDDLE POWDER 7760 4.8 7.1 68 10.9 7.1 154 OWL CREEK 8975 3.7 2.5 148 4.5 3.4 132 POWDER RIVER PASS 9480 7.9 6.3 125 9.9 6.9 143 SHELL CREEK 9580 11.4 9.3 123 10.7 7.9 135 SYLVAN LAKE 8420 16.7 13.4 125 19.1 11.9 161 SYLVAN ROAD 8120 11.3 7.4 153 13.1 9.9 132 TIMBER CREEK 7950 3.5 3.2 109 5.4 3.9 138 YOUNTS PEAK 8350 13.7 11.0 125 11.9 10.0 119 ----- ----- Basin wide percent of average 122 140 SHOSHONE RIVER BLACKWATER 9780 19.1 12.5 153 16.6 10.9 152 EVENING STAR 9200 22.2 16.1 138 23.0 13.6 169 KIRWIN 9550 7.8 6.1 128 9.1 6.2 147 MARQUETTE 8760 5.5 4.7 117 6.3 5.4 117 SYLVAN LAKE 8420 16.7 13.4 125 19.1 11.9 161 SYLVAN ROAD 8120 11.3 7.4 153 13.1 9.9 132 YOUNTS PEAK 8350 13.7 11.0 125 11.9 10.0 119 ----- ----- Basin wide percent of average 135 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.2 4.4 95 6.8 5.0 136 BIG GOOSE 7990 3.6 -M * 6.5 -M * BONE SPRINGS DIV 9350 10.3 9.6 107 10.5 8.4 125 BURGESS JUNCTION 7880 5.2 6.8 76 7.1 6.5 109 CLOUD PEAK RESERVOIR 9860 9.5 7.1 134 8.5 7.3 116 DOME LAKE 8880 5.4 8.0 68 7.2 8.0 90 GRAVE SPRINGS 8550 4.7 5.5 85 7.7 5.9 131 HANSEN SAWMILL 8760 3.4 4.1 83 5.6 4.6 122 MIDDLE POWDER 7760 4.8 7.1 68 10.9 7.1 154 POWDER RIVER PASS 9480 7.9 6.3 125 9.9 6.9 143 SUCKER CREEK 8880 6.5 6.6 98 8.7 7.8 112 TIE CREEK 6870 2.2 -M * 5.7 6.3 90 ----- ----- Basin wide percent of average 95 120 BELLE FOURCHE BLIND PARK 6890 4.7 6.5 72 11.8 5.6 211 NORTH RAPID CREEK 6130 3.8 -M * 10.5 -M * WARREN PEAK 6520 5.7 6.5 88 10.8 4.7 230 ----- ----- Basin wide percent of average 80 219 UPPER N. PLATTE RIVER COLUMBINE 9400 12.1 13.7 88 14.0 14.2 99 DIVIDE PEAK 8800 10.1 12.0 84 15.9 14.5 110 ELK RIVER 8700 8.5 10.9 78 14.0 11.1 126 JOE WRIGHT 10120 12.2 12.7 96 17.4 14.6 119 NORTH FRENCH CREEK 10100 17.3 14.3 121 18.6 13.5 138 OLD BATTLE 10000 14.9 18.3 81 21.1 17.4 121 SOUTH BRUSH CREEK 8400 5.7 6.3 90 13.4 10.4 129 TOWER 10500 23.9 26.2 91 24.2 21.2 114 WEBBER SPRINGS 9200 10.6 15.5 68 15.4 15.3 101 WILLOW CREEK PASS 9540 5.7 6.7 85 7.5 7.1 106 ----- ----- Basin wide percent of average 89 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 11.6 14.6 79 14.3 10.7 134 CASPER MTN. 7900 5.0 8.6 58 10.6 8.0 132 DEADMAN HILL 10220 11.1 10.0 111 11.9 9.2 129 DEER PARK 9700 8.3 -M * 11.8 -M * LAPRELE CREEK 8320 1.6 5.9 27 8.3 6.6 126 RENO HILL 8400 6.7 7.6 88 11.1 10.7 104 ROACH 9700 9.9 9.8 101 12.7 12.7 100 SAND LAKE 10080 19.0 18.9 101 18.5 11.6 159 SOUTH PASS 9040 9.4 10.2 92 10.9 9.7 112 WINDY PEAK 7840 2.5 3.9 64 8.2 5.2 158 ----- ----- Basin wide percent of average 86 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.8 6.5 89 10.5 9.6 109 DIVIDE PEAK 8800 10.1 12.0 84 15.9 14.5 110 OLD BATTLE 10000 14.9 18.3 81 21.1 17.4 121 SANDSTONE RS 8150 6.2 8.2 76 12.5 11.6 108 WHISKEY PARK 8950 14.0 16.4 85 18.5 16.8 110 ----- ----- Basin wide percent of average 83 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 8.8 8.3 106 8.2 10.5 78 BLIND BULL SUM 8650 15.3 16.7 92 12.6 14.5 87 EAST RIM DIVIDE 7930 7.2 8.0 90 7.6 9.7 78 ELKHART PARK G.S. 9400 7.1 7.8 91 7.7 10.3 75 GROS VENTRE SUMMIT 8775 8.0 9.3 86 8.3 10.2 81 KENDALL R.S. 7740 7.9 8.6 92 8.6 9.9 87 LOOMIS PARK 8240 9.5 10.0 95 11.0 12.1 91 NEW FORK LAKE 8340 6.3 6.7 94 6.6 9.3 71 SNIDER BASIN 8250 7.8 8.5 92 8.5 9.7 88 SPRING CREEK DIVIDE 9000 15.0 15.7 96 15.3 17.0 90 TRIPLE PEAK 8500 14.4 15.0 96 16.1 20.0 81 ----- ----- Basin wide percent of average 94 83 LOWER GREEN RIVER HAMS FORK 7840 6.0 6.8 88 5.9 8.6 69 HEWINTA 9500 4.6 5.4 85 7.4 7.6 97 HICKERSON PARK 9150 2.9 3.1 94 5.6 5.5 102 HOLE-IN-ROCK 9150 3.7 2.8 132 6.2 5.5 113 INDIAN CREEK 9425 13.8 15.7 88 11.9 16.1 74 KELLEY R.S. 8180 8.2 9.2 89 9.9 12.0 83 STEEL CREEK PARK 10100 6.7 8.9 75 8.8 7.9 111 ----- ----- Basin wide percent of average 88 88 UPPER BEAR RIVER BUG LAKE 7950 7.3 11.5 63 9.2 11.5 80 HAYDEN FORK 9400 6.8 9.1 75 10.0 10.7 93 KELLEY R.S. 8180 8.2 9.2 89 9.9 12.0 83 LILY LAKE 9050 6.6 7.5 88 9.6 8.6 112 MONTE CRISTO 8960 10.7 15.2 70 13.3 14.9 89 SALT RIVER SUMMIT 7600 7.5 7.6 99 9.8 10.8 91 TRIAL LAKE 9960 7.8 14.2 55 8.9 13.6 65 ----- ----- Basin wide percent of average 74 86 ----------------------------------------------------------------------------- -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.