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 4 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.7 8.4 104 10.9 11.7 93 COTTONWOOD CREEK 7600 9.0 9.4 96 12.1 12.4 98 GRANITE CREEK 6770 6.9 7.8 88 8.9 12.3 72 GRASSY LAKE 7265 16.1 15.2 106 17.4 19.0 92 GROS VENTRE SUMMIT 8775 6.3 7.3 86 6.7 8.3 81 LEWIS LAKE DIVIDE 7860 14.7 14.7 100 17.1 19.3 89 PHILLIPS BENCH 8200 12.0 12.3 98 12.5 15.0 83 SALT RIVER SUMMIT 7600 4.9 5.5 89 7.3 8.9 82 SNAKE RIVER STATION 6920 8.1 8.1 100 10.7 13.4 80 SPRING CREEK DIVIDE 9000 10.8 12.3 88 11.4 13.9 82 THUMB DIVIDE 7980 10.1 7.7 131 10.2 11.0 93 TOGWOTEE PASS 9580 -M 11.7 * 13.5 14.4 94 TWO OCEAN PLATEAU 9360 16.4 13.2 124 14.9 16.2 92 WILLOW CREEK 8450 12.1 13.7 88 17.5 16.3 107 ----- ----- Basin wide percent of average 100 89 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 11.9 12.0 99 10.8 8.8 123 BLACK BEAR 7950 20.1 16.5 122 19.4 18.1 107 CANYON 7940 7.7 5.6 138 8.7 7.2 121 FISHER CREEK 9100 18.3 16.5 111 16.3 16.8 97 MADISON PLATEAU 7750 -M 10.7 * 13.2 12.2 108 NORTHEAST ENTRANCE 7350 5.1 4.3 119 6.7 6.0 112 PARKER PEAK 9400 11.3 11.0 103 -M 7.9 * SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141 THUMB DIVIDE 7980 10.1 7.7 131 10.2 11.0 93 TWO OCEAN PLATEAU 9360 16.4 13.2 124 14.9 16.2 92 WHISKEY CREEK 6800 8.5 7.4 115 10.7 10.2 105 WHITE MILL 8700 11.4 12.0 95 10.7 13.4 80 WOLVERINE 7650 8.0 5.5 145 6.5 6.6 98 ----- ----- Basin wide percent of average 114 104 WIND RIVER BURROUGHS CREEK 8750 7.9 7.4 107 8.6 8.4 102 COLD SPRINGS 9630 4.9 4.6 107 6.6 5.6 118 DEER PARK 9700 6.2 -M * 9.2 -M * HOBBS PARK 10100 8.1 8.0 101 8.6 7.1 121 LITTLE WARM 9620 6.1 5.3 115 7.2 6.8 106 SOUTH PASS 9040 7.0 8.6 81 8.6 8.3 104 ST. LAWRENCE ALT 8620 3.8 3.5 109 6.6 5.1 129 TOGWOTEE PASS 9580 -M 11.7 * 13.5 14.4 94 TOWNSEND CREEK 8700 4.0 4.7 85 6.6 6.0 110 ----- ----- Basin wide percent of average 99 107 BIGHORN BASIN BALD MTN. 9375 8.8 10.6 83 8.4 9.0 93 BEAR TRAP MEADOW 7900 3.4 3.8 89 6.1 4.4 139 BLACKWATER 9780 15.0 10.3 146 13.2 9.1 145 BONE SPRINGS DIV 9350 7.0 8.1 86 7.5 7.1 106 EVENING STAR 9200 16.1 13.4 120 16.6 11.2 148 GRAVE SPRINGS 8550 3.7 4.7 79 6.9 5.2 133 KIRWIN 9550 6.5 5.4 120 7.7 5.4 143 MARQUETTE 8760 4.8 4.0 120 5.8 4.8 121 MIDDLE POWDER 7760 3.7 5.9 63 9.7 6.2 156 OWL CREEK 8975 3.4 2.0 170 4.1 2.9 141 POWDER RIVER PASS 9480 4.8 5.3 91 6.8 5.8 117 SHELL CREEK 9580 7.7 7.8 99 6.9 6.6 105 SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141 SYLVAN ROAD 8120 7.7 6.1 126 9.5 8.3 114 TIMBER CREEK 7950 3.3 2.5 132 5.3 3.4 156 YOUNTS PEAK 8350 10.1 9.2 110 8.8 8.3 106 ----- ----- Basin wide percent of average 107 128 SHOSHONE RIVER BLACKWATER 9780 15.0 10.3 146 13.2 9.1 145 EVENING STAR 9200 16.1 13.4 120 16.6 11.2 148 KIRWIN 9550 6.5 5.4 120 7.7 5.4 143 MARQUETTE 8760 4.8 4.0 120 5.8 4.8 121 SYLVAN LAKE 8420 11.8 11.2 105 14.2 10.1 141 SYLVAN ROAD 8120 7.7 6.1 126 9.5 8.3 114 YOUNTS PEAK 8350 10.1 9.2 110 8.8 8.3 106 ----- ----- Basin wide percent of average 121 133 POWDER-TONGUE BEAR TRAP MEADOW 7900 3.4 3.8 89 6.1 4.4 139 BIG GOOSE 7990 3.1 -M * 6.1 -M * BONE SPRINGS DIV 9350 7.0 8.1 86 7.5 7.1 106 BURGESS JUNCTION 7880 4.1 5.7 72 6.2 5.7 109 CLOUD PEAK RESERVOIR 9860 7.6 5.8 131 7.2 6.3 114 DOME LAKE 8880 4.1 6.6 62 6.0 7.1 85 GRAVE SPRINGS 8550 3.7 4.7 79 6.9 5.2 133 HANSEN SAWMILL 8760 3.0 3.4 88 5.2 4.0 130 MIDDLE POWDER 7760 3.7 5.9 63 9.7 6.2 156 POWDER RIVER PASS 9480 4.8 5.3 91 6.8 5.8 117 SUCKER CREEK 8880 4.9 5.4 91 7.2 6.7 107 TIE CREEK 6870 1.3 -M * 4.6 5.5 84 ----- ----- Basin wide percent of average 85 115 BELLE FOURCHE BLIND PARK 6890 2.3 5.5 42 9.2 4.9 188 NORTH RAPID CREEK 6130 2.3 -M * 8.8 -M * WARREN PEAK 6520 2.9 5.5 53 8.3 4.0 208 ----- ----- Basin wide percent of average 47 197 UPPER N. PLATTE RIVER COLUMBINE 9400 7.5 10.4 72 9.7 11.3 86 DIVIDE PEAK 8800 7.7 9.9 78 13.9 12.3 113 ELK RIVER 8700 3.9 8.6 45 10.3 9.2 112 JOE WRIGHT 10120 8.1 10.8 75 12.7 12.1 105 NORTH FRENCH CREEK 10100 12.3 11.9 103 14.8 11.3 131 OLD BATTLE 10000 11.2 15.4 73 16.2 14.7 110 SOUTH BRUSH CREEK 8400 4.1 5.0 82 11.4 10.0 114 TOWER 10500 16.1 22.4 72 17.7 17.4 102 WEBBER SPRINGS 9200 7.2 12.7 57 11.9 13.5 88 WILLOW CREEK PASS 9540 4.8 5.9 81 6.2 6.3 98 ----- ----- Basin wide percent of average 73 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.0 12.4 56 9.9 8.9 111 CASPER MTN. 7900 4.2 7.7 55 9.8 7.2 136 DEADMAN HILL 10220 8.4 8.2 102 9.4 7.7 122 DEER PARK 9700 6.2 -M * 9.2 -M * LAPRELE CREEK 8320 1.3 4.9 27 7.5 5.3 142 RENO HILL 8400 6.0 6.4 94 10.2 9.9 103 ROACH 9700 6.4 8.0 80 9.5 10.6 90 SAND LAKE 10080 13.8 15.7 88 15.0 9.7 155 SOUTH PASS 9040 7.0 8.6 81 8.6 8.3 104 WINDY PEAK 7840 1.7 3.4 50 7.7 4.3 179 ----- ----- Basin wide percent of average 74 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.9 5.2 75 9.1 7.8 117 DIVIDE PEAK 8800 7.7 9.9 78 13.9 12.3 113 OLD BATTLE 10000 11.2 15.4 73 16.2 14.7 110 SANDSTONE RS 8150 -M 6.5 * -M 9.4 * WHISKEY PARK 8950 7.3 13.4 54 13.6 12.6 108 ----- ----- Basin wide percent of average 69 111 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.0 6.4 109 6.4 8.6 74 BLIND BULL SUM 8650 11.4 13.2 86 9.8 11.5 85 EAST RIM DIVIDE 7930 5.3 6.1 87 6.0 7.9 76 ELKHART PARK G.S. 9400 5.6 6.1 92 6.4 8.4 76 GROS VENTRE SUMMIT 8775 6.3 7.3 86 6.7 8.3 81 KENDALL R.S. 7740 6.0 6.4 94 6.5 8.1 80 LOOMIS PARK 8240 6.9 7.5 92 8.2 9.9 83 NEW FORK LAKE 8340 4.9 4.9 100 5.4 7.6 71 SNIDER BASIN 8250 5.7 6.4 89 6.5 7.9 82 SPRING CREEK DIVIDE 9000 10.8 12.3 88 11.4 13.9 82 TRIPLE PEAK 8500 10.9 11.6 94 12.5 16.3 77 ----- ----- Basin wide percent of average 92 79 LOWER GREEN RIVER HAMS FORK 7840 4.0 4.7 85 4.8 7.0 69 HEWINTA 9500 3.2 4.2 76 6.1 6.6 92 HICKERSON PARK 9150 2.4 2.7 89 5.1 4.9 104 HOLE-IN-ROCK 9150 2.9 2.4 121 5.5 4.9 112 INDIAN CREEK 9425 10.0 12.3 81 8.9 13.2 67 KELLEY R.S. 8180 5.9 7.1 83 7.5 9.8 77 STEEL CREEK PARK 10100 5.0 7.5 67 7.2 7.0 103 ----- ----- Basin wide percent of average 82 84 UPPER BEAR RIVER BUG LAKE 7950 5.1 9.3 55 6.7 9.8 68 HAYDEN FORK 9400 4.9 7.2 68 8.3 9.1 91 KELLEY R.S. 8180 5.9 7.1 83 7.5 9.8 77 LILY LAKE 9050 4.8 6.4 75 8.0 7.4 108 MONTE CRISTO 8960 7.4 11.7 63 10.6 12.7 83 SALT RIVER SUMMIT 7600 4.9 5.5 89 7.3 8.9 82 TRIAL LAKE 9960 5.1 11.4 45 6.6 11.4 58 ----- ----- Basin wide percent of average 65 80 ----------------------------------------------------------------------------- -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.