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 THURSDAY: JANUARY 21 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.9 10.9 128 16.1 14.5 111 COTTONWOOD CREEK 7600 12.3 12.4 99 15.3 15.4 99 GRANITE CREEK 6770 11.0 10.7 103 13.1 15.3 86 GRASSY LAKE 7265 23.8 20.1 118 24.2 23.5 103 GROS VENTRE SUMMIT 8775 8.4 9.4 89 8.6 10.3 83 LEWIS LAKE DIVIDE 7860 22.8 19.8 115 24.1 23.9 101 PHILLIPS BENCH 8200 17.2 16.7 103 17.0 18.8 90 SALT RIVER SUMMIT 7600 7.8 7.7 101 10.1 11.0 92 SNAKE RIVER STATION 6920 -M 10.8 * -M 16.5 * SPRING CREEK DIVIDE 9000 15.4 15.9 97 15.8 17.2 92 THUMB DIVIDE 7980 13.2 10.0 132 13.3 13.6 98 TOGWOTEE PASS 9580 -M 15.0 * 18.2 17.9 102 TWO OCEAN PLATEAU 9360 22.3 16.4 136 19.6 20.0 98 WILLOW CREEK 8450 16.8 18.3 92 21.8 20.2 108 ----- ----- Basin wide percent of average 110 98 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.8 14.5 123 15.9 10.8 147 BLACK BEAR 7950 28.5 21.5 133 23.1 23.2 100 CANYON 7940 11.2 7.3 153 12.2 8.8 139 FISHER CREEK 9100 26.0 21.4 121 23.1 21.5 107 MADISON PLATEAU 7750 -M 14.1 * 17.8 15.3 116 NORTHEAST ENTRANCE 7350 7.9 5.6 141 9.8 7.4 132 PARKER PEAK 9400 15.3 13.1 117 -M 9.5 * SYLVAN LAKE 8420 17.0 13.5 126 19.4 12.0 162 THUMB DIVIDE 7980 13.2 10.0 132 13.3 13.6 98 TWO OCEAN PLATEAU 9360 22.3 16.4 136 19.6 20.0 98 WHISKEY CREEK 6800 11.8 9.8 120 14.4 12.7 113 WHITE MILL 8700 17.0 15.1 113 15.5 17.0 91 WOLVERINE 7650 10.9 7.0 156 8.9 7.9 113 ----- ----- Basin wide percent of average 128 113 WIND RIVER BURROUGHS CREEK 8750 10.7 9.3 115 11.7 10.2 115 COLD SPRINGS 9630 6.1 5.3 115 7.6 6.4 119 DEER PARK 9700 9.0 -M * 12.6 -M * HOBBS PARK 10100 9.5 9.3 102 9.5 8.4 113 LITTLE WARM 9620 8.2 6.5 126 9.2 8.1 114 SOUTH PASS 9040 10.1 10.3 98 11.5 9.8 117 ST. LAWRENCE ALT 8620 4.2 4.3 98 6.9 5.8 119 TOGWOTEE PASS 9580 -M 15.0 * 18.2 17.9 102 TOWNSEND CREEK 8700 5.0 5.6 89 7.5 7.1 106 ----- ----- Basin wide percent of average 106 111 BIGHORN BASIN BALD MTN. 9375 13.4 12.6 106 12.5 10.6 118 BEAR TRAP MEADOW 7900 4.2 4.4 95 6.9 5.0 138 BLACKWATER 9780 19.3 12.6 153 16.9 11.0 154 BONE SPRINGS DIV 9350 10.3 9.7 106 10.4 8.5 122 EVENING STAR 9200 22.6 16.2 140 23.2 13.7 169 GRAVE SPRINGS 8550 4.7 5.6 84 7.7 5.9 131 KIRWIN 9550 7.8 6.1 128 9.2 6.2 148 MARQUETTE 8760 5.3 4.7 113 6.2 5.4 115 MIDDLE POWDER 7760 4.8 7.2 67 10.9 7.2 151 OWL CREEK 8975 3.6 2.5 144 4.4 3.4 129 POWDER RIVER PASS 9480 8.0 6.4 125 10.1 7.0 144 SHELL CREEK 9580 11.5 9.4 122 10.7 8.0 134 SYLVAN LAKE 8420 17.0 13.5 126 19.4 12.0 162 SYLVAN ROAD 8120 11.5 7.5 153 13.4 10.0 134 TIMBER CREEK 7950 3.5 3.2 109 5.4 3.9 138 YOUNTS PEAK 8350 13.9 11.1 125 12.1 10.1 120 ----- ----- Basin wide percent of average 122 140 SHOSHONE RIVER BLACKWATER 9780 19.3 12.6 153 16.9 11.0 154 EVENING STAR 9200 22.6 16.2 140 23.2 13.7 169 KIRWIN 9550 7.8 6.1 128 9.2 6.2 148 MARQUETTE 8760 5.3 4.7 113 6.2 5.4 115 SYLVAN LAKE 8420 17.0 13.5 126 19.4 12.0 162 SYLVAN ROAD 8120 11.5 7.5 153 13.4 10.0 134 YOUNTS PEAK 8350 13.9 11.1 125 12.1 10.1 120 ----- ----- Basin wide percent of average 136 147 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.2 4.4 95 6.9 5.0 138 BIG GOOSE 7990 3.6 -M * 6.4 -M * BONE SPRINGS DIV 9350 10.3 9.7 106 10.4 8.5 122 BURGESS JUNCTION 7880 5.1 6.9 74 7.0 6.6 106 CLOUD PEAK RESERVOIR 9860 9.3 7.2 129 7.2 7.4 97 DOME LAKE 8880 5.4 8.1 67 7.3 8.1 90 GRAVE SPRINGS 8550 4.7 5.6 84 7.7 5.9 131 HANSEN SAWMILL 8760 3.4 4.1 83 5.6 4.6 122 MIDDLE POWDER 7760 4.8 7.2 67 10.9 7.2 151 POWDER RIVER PASS 9480 8.0 6.4 125 10.1 7.0 144 SUCKER CREEK 8880 6.6 6.7 99 8.6 7.9 109 TIE CREEK 6870 2.2 -M * 5.7 6.3 90 ----- ----- Basin wide percent of average 93 117 BELLE FOURCHE BLIND PARK 6890 4.9 6.6 74 12.0 5.6 214 NORTH RAPID CREEK 6130 3.8 -M * 10.5 -M * WARREN PEAK 6520 5.9 6.6 89 10.8 4.7 230 ----- ----- Basin wide percent of average 82 221 UPPER N. PLATTE RIVER COLUMBINE 9400 12.4 13.9 89 14.2 14.4 99 DIVIDE PEAK 8800 10.4 12.1 86 16.1 14.6 110 ELK RIVER 8700 8.8 11.0 80 14.4 11.2 129 JOE WRIGHT 10120 12.3 12.8 96 17.5 14.8 118 NORTH FRENCH CREEK 10100 17.5 14.4 122 18.7 13.6 138 OLD BATTLE 10000 15.4 18.5 83 21.6 17.6 123 SOUTH BRUSH CREEK 8400 5.8 6.3 92 13.4 10.4 129 TOWER 10500 24.6 26.5 93 24.8 21.5 115 WEBBER SPRINGS 9200 10.9 15.7 69 15.7 15.4 102 WILLOW CREEK PASS 9540 5.8 6.8 85 7.5 7.2 104 ----- ----- Basin wide percent of average 90 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 11.8 14.7 80 14.4 10.9 132 CASPER MTN. 7900 5.0 8.6 58 10.6 8.1 131 DEADMAN HILL 10220 11.0 10.1 109 11.9 9.3 128 DEER PARK 9700 9.0 -M * 12.6 -M * LAPRELE CREEK 8320 1.6 6.0 27 8.2 6.7 122 RENO HILL 8400 6.7 7.7 87 11.1 10.8 103 ROACH 9700 10.0 9.9 101 12.9 12.8 101 SAND LAKE 10080 19.2 19.1 101 18.6 11.7 159 SOUTH PASS 9040 10.1 10.3 98 11.5 9.8 117 WINDY PEAK 7840 2.5 4.0 62 8.2 5.3 155 ----- ----- Basin wide percent of average 86 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.0 6.5 92 10.6 9.7 109 DIVIDE PEAK 8800 10.4 12.1 86 16.1 14.6 110 OLD BATTLE 10000 15.4 18.5 83 21.6 17.6 123 SANDSTONE RS 8150 6.3 8.3 76 12.7 11.8 108 WHISKEY PARK 8950 14.4 16.5 87 18.8 17.1 110 ----- ----- Basin wide percent of average 85 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.4 8.4 112 8.7 10.6 82 BLIND BULL SUM 8650 16.1 16.9 95 13.4 14.7 91 EAST RIM DIVIDE 7930 7.6 8.1 94 8.0 9.9 81 ELKHART PARK G.S. 9400 7.7 7.9 97 8.3 10.4 80 GROS VENTRE SUMMIT 8775 8.4 9.4 89 8.6 10.3 83 KENDALL R.S. 7740 8.3 8.7 95 9.0 10.1 89 LOOMIS PARK 8240 10.1 10.1 100 11.6 12.3 94 NEW FORK LAKE 8340 6.7 6.8 99 7.0 9.4 74 SNIDER BASIN 8250 8.2 8.6 95 8.8 9.9 89 SPRING CREEK DIVIDE 9000 15.4 15.9 97 15.8 17.2 92 TRIPLE PEAK 8500 14.9 15.2 98 16.6 20.2 82 ----- ----- Basin wide percent of average 97 86 LOWER GREEN RIVER HAMS FORK 7840 6.2 6.9 90 6.1 8.7 70 HEWINTA 9500 4.7 5.5 85 7.4 7.7 96 HICKERSON PARK 9150 3.0 3.2 94 5.7 5.6 102 HOLE-IN-ROCK 9150 3.7 2.9 128 6.3 5.6 113 INDIAN CREEK 9425 14.3 15.9 90 12.3 16.3 75 KELLEY R.S. 8180 8.5 9.3 91 10.2 12.2 84 STEEL CREEK PARK 10100 7.0 9.0 78 8.9 8.0 111 ----- ----- Basin wide percent of average 90 89 UPPER BEAR RIVER BUG LAKE 7950 8.2 11.6 71 9.6 11.6 83 HAYDEN FORK 9400 7.2 9.2 78 10.4 10.8 96 KELLEY R.S. 8180 8.5 9.3 91 10.2 12.2 84 LILY LAKE 9050 6.8 7.5 91 9.8 8.7 113 MONTE CRISTO 8960 12.0 15.4 78 14.2 15.0 95 SALT RIVER SUMMIT 7600 7.8 7.7 101 10.1 11.0 92 TRIAL LAKE 9960 8.8 14.4 61 9.8 13.7 72 ----- ----- Basin wide percent of average 79 89 ----------------------------------------------------------------------------- -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.