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: JANUARY 11 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.7 9.5 113 12.8 12.8 100 COTTONWOOD CREEK 7600 9.6 10.7 90 12.8 13.6 94 GRANITE CREEK 6770 7.7 9.1 85 9.6 13.5 71 GRASSY LAKE 7265 19.2 17.3 111 20.3 20.8 98 GROS VENTRE SUMMIT 8775 6.6 8.2 80 6.9 9.2 75 LEWIS LAKE DIVIDE 7860 17.2 16.9 102 19.2 21.2 91 PHILLIPS BENCH 8200 13.9 14.2 98 14.4 16.6 87 SALT RIVER SUMMIT 7600 5.3 6.5 82 7.6 9.7 78 SNAKE RIVER STATION 6920 9.9 9.3 106 12.6 14.7 86 SPRING CREEK DIVIDE 9000 11.7 13.8 85 12.3 15.3 80 THUMB DIVIDE 7980 10.7 8.7 123 10.9 12.0 91 TOGWOTEE PASS 9580 -M 13.1 * 15.7 15.8 99 TWO OCEAN PLATEAU 9360 18.4 14.5 127 16.4 17.8 92 WILLOW CREEK 8450 13.3 15.7 85 18.0 17.9 101 ----- ----- Basin wide percent of average 100 90 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 14.9 13.1 114 13.6 9.7 140 BLACK BEAR 7950 22.7 18.6 122 21.0 20.2 104 CANYON 7940 9.1 6.4 142 10.1 7.9 128 FISHER CREEK 9100 22.0 18.6 118 19.8 18.8 105 MADISON PLATEAU 7750 -M 12.2 * 14.7 13.5 109 NORTHEAST ENTRANCE 7350 6.7 4.9 137 8.6 6.6 130 PARKER PEAK 9400 13.3 11.9 112 -M 8.5 * SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158 THUMB DIVIDE 7980 10.7 8.7 123 10.9 12.0 91 TWO OCEAN PLATEAU 9360 18.4 14.5 127 16.4 17.8 92 WHISKEY CREEK 6800 9.6 8.4 114 12.1 11.2 108 WHITE MILL 8700 14.0 13.3 105 12.9 14.9 87 WOLVERINE 7650 9.8 6.1 161 7.7 7.2 107 ----- ----- Basin wide percent of average 121 109 WIND RIVER BURROUGHS CREEK 8750 8.8 8.2 107 9.6 9.1 105 COLD SPRINGS 9630 5.3 4.9 108 6.9 6.0 115 DEER PARK 9700 6.1 -M * 9.2 -M * HOBBS PARK 10100 8.4 8.6 98 8.6 7.6 113 LITTLE WARM 9620 7.0 5.8 121 8.2 7.3 112 SOUTH PASS 9040 7.1 9.4 76 8.7 8.9 98 ST. LAWRENCE ALT 8620 4.0 3.8 105 6.6 5.4 122 TOGWOTEE PASS 9580 -M 13.1 * 15.7 15.8 99 TOWNSEND CREEK 8700 4.6 5.1 90 7.2 6.4 112 ----- ----- Basin wide percent of average 99 108 BIGHORN BASIN BALD MTN. 9375 12.6 11.5 110 11.9 9.7 123 BEAR TRAP MEADOW 7900 3.8 4.1 93 6.6 4.7 140 BLACKWATER 9780 16.8 11.3 149 14.8 9.9 149 BONE SPRINGS DIV 9350 9.6 8.8 109 9.9 7.7 129 EVENING STAR 9200 19.5 14.7 133 20.4 12.3 166 GRAVE SPRINGS 8550 4.4 5.1 86 7.4 5.5 135 KIRWIN 9550 6.9 5.7 121 8.0 5.7 140 MARQUETTE 8760 5.2 4.3 121 6.4 5.1 125 MIDDLE POWDER 7760 4.6 6.5 71 10.5 6.6 159 OWL CREEK 8975 3.7 2.3 161 4.6 3.1 148 POWDER RIVER PASS 9480 7.3 5.7 128 9.2 6.3 146 SHELL CREEK 9580 10.7 8.5 126 9.5 7.2 132 SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158 SYLVAN ROAD 8120 10.0 6.7 149 11.8 9.0 131 TIMBER CREEK 7950 3.3 2.8 118 5.3 3.6 147 YOUNTS PEAK 8350 11.7 10.0 117 9.4 9.1 103 ----- ----- Basin wide percent of average 121 140 SHOSHONE RIVER BLACKWATER 9780 16.8 11.3 149 14.8 9.9 149 EVENING STAR 9200 19.5 14.7 133 20.4 12.3 166 KIRWIN 9550 6.9 5.7 121 8.0 5.7 140 MARQUETTE 8760 5.2 4.3 121 6.4 5.1 125 SYLVAN LAKE 8420 14.8 12.2 121 17.2 10.9 158 SYLVAN ROAD 8120 10.0 6.7 149 11.8 9.0 131 YOUNTS PEAK 8350 11.7 10.0 117 9.4 9.1 103 ----- ----- Basin wide percent of average 131 142 POWDER-TONGUE BEAR TRAP MEADOW 7900 3.8 4.1 93 6.6 4.7 140 BIG GOOSE 7990 3.5 -M * 6.3 -M * BONE SPRINGS DIV 9350 9.6 8.8 109 9.9 7.7 129 BURGESS JUNCTION 7880 5.0 6.2 81 6.9 6.1 113 CLOUD PEAK RESERVOIR 9860 9.0 6.4 141 8.3 6.7 124 DOME LAKE 8880 5.1 7.2 71 7.0 7.5 93 GRAVE SPRINGS 8550 4.4 5.1 86 7.4 5.5 135 HANSEN SAWMILL 8760 3.5 3.7 95 5.5 4.3 128 MIDDLE POWDER 7760 4.6 6.5 71 10.5 6.6 159 POWDER RIVER PASS 9480 7.3 5.7 128 9.2 6.3 146 SUCKER CREEK 8880 6.2 5.9 105 8.5 7.2 118 TIE CREEK 6870 2.2 -M * 5.6 5.9 95 ----- ----- Basin wide percent of average 98 125 BELLE FOURCHE BLIND PARK 6890 4.4 5.9 75 11.5 5.2 221 NORTH RAPID CREEK 6130 3.7 -M * 10.4 -M * WARREN PEAK 6520 5.2 5.9 88 10.5 4.3 244 ----- ----- Basin wide percent of average 81 232 UPPER N. PLATTE RIVER COLUMBINE 9400 9.1 11.9 76 11.3 12.6 90 DIVIDE PEAK 8800 9.0 10.9 83 14.9 13.3 112 ELK RIVER 8700 5.8 9.6 60 12.3 10.0 123 JOE WRIGHT 10120 9.9 11.6 85 14.7 13.2 111 NORTH FRENCH CREEK 10100 15.5 13.0 119 17.5 12.3 142 OLD BATTLE 10000 12.3 16.7 74 18.4 15.9 116 SOUTH BRUSH CREEK 8400 5.8 5.6 104 12.9 10.2 126 TOWER 10500 18.9 23.8 79 20.0 19.1 105 WEBBER SPRINGS 9200 8.6 14.0 61 13.4 14.3 94 WILLOW CREEK PASS 9540 4.8 6.3 76 6.8 6.6 103 ----- ----- Basin wide percent of average 81 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 9.7 13.4 72 12.1 9.7 125 CASPER MTN. 7900 4.7 8.0 59 10.3 7.6 136 DEADMAN HILL 10220 10.0 9.0 111 10.5 8.3 127 DEER PARK 9700 6.1 -M * 9.2 -M * LAPRELE CREEK 8320 1.7 5.3 32 8.1 5.9 137 RENO HILL 8400 6.5 7.0 93 10.9 10.2 107 ROACH 9700 8.0 8.8 91 11.1 11.5 97 SAND LAKE 10080 16.9 17.2 98 17.2 10.6 162 SOUTH PASS 9040 7.1 9.4 76 8.7 8.9 98 WINDY PEAK 7840 2.4 3.6 67 8.2 4.7 174 ----- ----- Basin wide percent of average 82 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 5.8 88 9.6 8.6 112 DIVIDE PEAK 8800 9.0 10.9 83 14.9 13.3 112 OLD BATTLE 10000 12.3 16.7 74 18.4 15.9 116 SANDSTONE RS 8150 -M 7.3 * -M 10.4 * WHISKEY PARK 8950 9.9 14.7 67 15.7 14.4 109 ----- ----- Basin wide percent of average 75 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.4 7.3 101 6.9 9.4 73 BLIND BULL SUM 8650 12.3 14.9 83 10.3 12.8 80 EAST RIM DIVIDE 7930 5.8 6.9 84 6.4 8.7 74 ELKHART PARK G.S. 9400 6.0 6.9 87 6.6 9.2 72 GROS VENTRE SUMMIT 8775 6.6 8.2 80 6.9 9.2 75 KENDALL R.S. 7740 6.2 7.5 83 7.0 8.9 79 LOOMIS PARK 8240 7.3 8.6 85 8.9 10.9 82 NEW FORK LAKE 8340 5.2 5.7 91 6.0 8.4 71 SNIDER BASIN 8250 6.1 7.4 82 6.9 8.7 79 SPRING CREEK DIVIDE 9000 11.7 13.8 85 12.3 15.3 80 TRIPLE PEAK 8500 11.4 13.1 87 13.1 17.9 73 ----- ----- Basin wide percent of average 86 76 LOWER GREEN RIVER HAMS FORK 7840 4.1 5.7 72 4.8 7.7 62 HEWINTA 9500 3.4 4.8 71 6.1 7.0 87 HICKERSON PARK 9150 2.4 2.9 83 5.2 5.2 100 HOLE-IN-ROCK 9150 3.0 2.6 115 5.7 5.2 110 INDIAN CREEK 9425 10.6 13.9 76 9.5 14.4 66 KELLEY R.S. 8180 6.1 8.1 75 7.8 10.8 72 STEEL CREEK PARK 10100 5.3 8.1 65 7.4 7.4 100 ----- ----- Basin wide percent of average 76 81 UPPER BEAR RIVER BUG LAKE 7950 4.9 10.3 48 6.9 10.6 65 HAYDEN FORK 9400 4.9 8.2 60 8.5 9.8 87 KELLEY R.S. 8180 6.1 8.1 75 7.8 10.8 72 LILY LAKE 9050 -M 6.9 * -M 7.9 * MONTE CRISTO 8960 7.4 13.4 55 10.7 13.7 78 SALT RIVER SUMMIT 7600 5.3 6.5 82 7.6 9.7 78 TRIAL LAKE 9960 5.0 12.8 39 6.4 12.4 52 ----- ----- Basin wide percent of average 57 71 ----------------------------------------------------------------------------- -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.