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 SUNDAY: JANUARY 31 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.4 12.4 124 16.5 16.1 102 COTTONWOOD CREEK 7600 13.9 13.9 100 17.0 17.1 99 GRANITE CREEK 6770 12.1 12.2 99 14.3 17.0 84 GRASSY LAKE 7265 27.0 22.7 119 27.3 26.1 105 GROS VENTRE SUMMIT 8775 9.2 10.5 88 9.4 11.5 82 LEWIS LAKE DIVIDE 7860 25.3 22.5 112 25.8 26.6 97 PHILLIPS BENCH 8200 19.4 19.2 101 19.5 21.1 92 SALT RIVER SUMMIT 7600 8.7 8.9 98 11.0 12.2 90 SNAKE RIVER STATION 6920 14.5 12.3 118 17.9 18.4 97 SPRING CREEK DIVIDE 9000 16.5 18.0 92 17.1 19.2 89 THUMB DIVIDE 7980 14.8 11.3 131 14.6 15.1 97 TOGWOTEE PASS 9580 -M 16.7 * 19.6 19.9 98 TWO OCEAN PLATEAU 9360 23.9 18.1 132 20.8 22.3 93 WILLOW CREEK 8450 19.5 20.8 94 24.5 22.6 108 ----- ----- Basin wide percent of average 109 96 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.7 15.9 118 16.8 12.0 140 BLACK BEAR 7950 31.4 24.2 130 -M 26.2 * CANYON 7940 12.1 8.2 148 12.9 9.8 132 FISHER CREEK 9100 27.2 23.9 114 23.7 24.3 98 MADISON PLATEAU 7750 -M 15.9 * 19.7 17.1 115 NORTHEAST ENTRANCE 7350 8.5 6.3 135 10.4 8.2 127 PARKER PEAK 9400 16.4 14.2 115 -M 10.4 * SYLVAN LAKE 8420 18.7 14.8 126 20.9 13.1 160 THUMB DIVIDE 7980 14.8 11.3 131 14.6 15.1 97 TWO OCEAN PLATEAU 9360 23.9 18.1 132 20.8 22.3 93 WHISKEY CREEK 6800 13.2 11.1 119 15.8 14.2 111 WHITE MILL 8700 18.3 16.6 110 16.7 19.1 87 WOLVERINE 7650 11.5 7.8 147 9.9 8.7 114 ----- ----- Basin wide percent of average 125 111 WIND RIVER BURROUGHS CREEK 8750 11.8 10.3 115 12.8 11.2 114 COLD SPRINGS 9630 6.5 5.8 112 8.2 6.9 119 DEER PARK 9700 10.2 -M * 13.8 -M * HOBBS PARK 10100 10.5 9.9 106 10.3 9.1 113 LITTLE WARM 9620 8.7 7.1 123 9.8 8.8 111 SOUTH PASS 9040 11.1 11.2 99 12.6 10.7 118 ST. LAWRENCE ALT 8620 4.6 4.8 96 7.3 6.3 116 TOGWOTEE PASS 9580 -M 16.7 * 19.6 19.9 98 TOWNSEND CREEK 8700 5.6 6.1 92 8.1 7.7 105 ----- ----- Basin wide percent of average 107 110 BIGHORN BASIN BALD MTN. 9375 14.1 13.7 103 13.2 11.6 114 BEAR TRAP MEADOW 7900 4.5 4.8 94 6.9 5.4 128 BLACKWATER 9780 20.9 13.9 150 18.2 12.1 150 BONE SPRINGS DIV 9350 10.9 10.5 104 11.1 9.3 119 EVENING STAR 9200 23.9 17.7 135 24.6 15.2 162 GRAVE SPRINGS 8550 4.8 6.1 79 7.7 6.4 120 KIRWIN 9550 8.3 6.6 126 9.5 6.7 142 MARQUETTE 8760 6.2 5.1 122 7.0 5.8 121 MIDDLE POWDER 7760 5.0 7.7 65 11.0 7.7 143 OWL CREEK 8975 4.2 2.8 150 4.9 3.8 129 POWDER RIVER PASS 9480 8.4 6.9 122 10.5 7.7 136 SHELL CREEK 9580 12.1 10.1 120 10.9 8.8 124 SYLVAN LAKE 8420 18.7 14.8 126 20.9 13.1 160 SYLVAN ROAD 8120 12.3 8.4 146 14.4 11.0 131 TIMBER CREEK 7950 3.8 3.6 106 5.6 4.2 133 YOUNTS PEAK 8350 14.8 12.1 122 13.0 11.2 116 ----- ----- Basin wide percent of average 119 135 SHOSHONE RIVER BLACKWATER 9780 20.9 13.9 150 18.2 12.1 150 EVENING STAR 9200 23.9 17.7 135 24.6 15.2 162 KIRWIN 9550 8.3 6.6 126 9.5 6.7 142 MARQUETTE 8760 6.2 5.1 122 7.0 5.8 121 SYLVAN LAKE 8420 18.7 14.8 126 20.9 13.1 160 SYLVAN ROAD 8120 12.3 8.4 146 14.4 11.0 131 YOUNTS PEAK 8350 14.8 12.1 122 13.0 11.2 116 ----- ----- Basin wide percent of average 134 143 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.5 4.8 94 6.9 5.4 128 BIG GOOSE 7990 3.8 -M * 6.7 -M * BONE SPRINGS DIV 9350 10.9 10.5 104 11.1 9.3 119 BURGESS JUNCTION 7880 5.4 7.5 72 7.3 7.1 103 CLOUD PEAK RESERVOIR 9860 9.6 7.9 122 8.4 8.0 105 DOME LAKE 8880 5.6 8.9 63 7.4 8.6 86 GRAVE SPRINGS 8550 4.8 6.1 79 7.7 6.4 120 HANSEN SAWMILL 8760 3.8 4.6 83 5.8 5.0 116 MIDDLE POWDER 7760 5.0 7.7 65 11.0 7.7 143 POWDER RIVER PASS 9480 8.4 6.9 122 10.5 7.7 136 SUCKER CREEK 8880 6.9 7.4 93 9.0 8.5 106 TIE CREEK 6870 2.4 -M * 5.9 6.8 87 ----- ----- Basin wide percent of average 90 113 BELLE FOURCHE BLIND PARK 6890 5.3 7.1 75 12.4 6.1 203 NORTH RAPID CREEK 6130 4.0 -M * 10.7 -M * WARREN PEAK 6520 6.0 7.1 85 10.9 5.2 210 ----- ----- Basin wide percent of average 80 206 UPPER N. PLATTE RIVER COLUMBINE 9400 13.5 15.6 87 15.0 16.2 93 DIVIDE PEAK 8800 12.9 13.2 98 18.3 16.0 114 ELK RIVER 8700 -M 12.4 * 16.2 12.4 131 JOE WRIGHT 10120 14.4 13.9 104 19.5 16.3 120 NORTH FRENCH CREEK 10100 19.7 15.9 124 20.1 15.0 134 OLD BATTLE 10000 18.3 20.3 90 24.4 19.2 127 SOUTH BRUSH CREEK 8400 5.2 7.0 74 14.7 10.7 137 TOWER 10500 27.7 29.7 93 26.7 23.9 112 WEBBER SPRINGS 9200 12.8 17.2 74 17.8 16.5 108 WILLOW CREEK PASS 9540 7.9 7.3 108 9.2 7.7 119 ----- ----- Basin wide percent of average 95 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 13.5 15.9 85 15.8 12.0 132 CASPER MTN. 7900 6.9 9.3 74 12.3 8.6 143 DEADMAN HILL 10220 12.3 11.0 112 13.4 10.2 131 DEER PARK 9700 10.2 -M * 13.8 -M * LAPRELE CREEK 8320 2.8 6.5 43 10.0 7.5 133 RENO HILL 8400 8.8 8.2 107 13.2 11.3 117 ROACH 9700 12.3 10.9 113 15.0 14.1 106 SAND LAKE 10080 21.8 21.0 104 20.5 12.9 159 SOUTH PASS 9040 11.1 11.2 99 12.6 10.7 118 WINDY PEAK 7840 3.6 4.5 80 9.3 5.8 160 ----- ----- Basin wide percent of average 95 131 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.8 7.2 108 12.5 10.8 116 DIVIDE PEAK 8800 12.9 13.2 98 18.3 16.0 114 OLD BATTLE 10000 18.3 20.3 90 24.4 19.2 127 SANDSTONE RS 8150 7.9 9.2 86 14.6 13.2 111 WHISKEY PARK 8950 16.7 18.2 92 20.6 19.7 105 ----- ----- Basin wide percent of average 93 115 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.5 9.5 111 9.8 11.8 83 BLIND BULL SUM 8650 17.8 18.8 95 14.8 16.6 89 EAST RIM DIVIDE 7930 8.5 9.2 92 8.9 11.0 81 ELKHART PARK G.S. 9400 8.6 8.8 98 9.2 11.6 79 GROS VENTRE SUMMIT 8775 9.2 10.5 88 9.4 11.5 82 KENDALL R.S. 7740 9.1 9.8 93 9.7 11.2 87 LOOMIS PARK 8240 9.7 11.5 84 12.8 13.7 93 NEW FORK LAKE 8340 7.5 7.8 96 7.8 10.5 74 SNIDER BASIN 8250 8.8 9.8 90 9.4 11.0 85 SPRING CREEK DIVIDE 9000 16.5 18.0 92 17.1 19.2 89 TRIPLE PEAK 8500 15.9 17.2 92 17.8 22.5 79 ----- ----- Basin wide percent of average 93 84 LOWER GREEN RIVER HAMS FORK 7840 7.3 8.0 91 7.0 9.7 72 HEWINTA 9500 5.8 6.1 95 9.1 8.3 110 HICKERSON PARK 9150 3.9 3.5 111 6.6 6.0 110 HOLE-IN-ROCK 9150 4.1 3.2 128 7.1 6.0 118 INDIAN CREEK 9425 16.1 17.7 91 13.8 18.1 76 KELLEY R.S. 8180 9.6 10.6 91 11.3 13.6 83 STEEL CREEK PARK 10100 8.7 9.7 90 10.7 8.5 126 ----- ----- Basin wide percent of average 94 93 UPPER BEAR RIVER BUG LAKE 7950 10.8 12.8 84 11.3 12.7 89 HAYDEN FORK 9400 8.4 10.1 83 12.3 11.8 104 KELLEY R.S. 8180 9.6 10.6 91 11.3 13.6 83 LILY LAKE 9050 8.0 8.0 100 11.4 9.4 121 MONTE CRISTO 8960 14.6 17.1 85 16.1 16.4 98 SALT RIVER SUMMIT 7600 8.7 8.9 98 11.0 12.2 90 TRIAL LAKE 9960 10.7 15.7 68 11.9 15.1 79 ----- ----- Basin wide percent of average 85 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.