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: FEBRUARY 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 16.2 12.8 127 16.6 16.7 99 COTTONWOOD CREEK 7600 14.9 14.5 103 18.1 17.8 102 GRANITE CREEK 6770 12.9 12.6 102 15.0 17.6 85 GRASSY LAKE 7265 28.6 24.5 117 28.8 27.1 106 GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.8 11.9 82 LEWIS LAKE DIVIDE 7860 26.8 23.6 114 26.8 27.6 97 PHILLIPS BENCH 8200 20.8 20.0 104 20.5 21.8 94 SALT RIVER SUMMIT 7600 9.1 9.3 98 11.4 12.6 90 SNAKE RIVER STATION 6920 15.0 12.9 116 18.4 19.1 96 SPRING CREEK DIVIDE 9000 17.5 18.7 94 17.9 19.9 90 THUMB DIVIDE 7980 15.3 11.7 131 15.0 15.7 96 TOGWOTEE PASS 9580 -M 17.3 * 20.3 20.6 99 TWO OCEAN PLATEAU 9360 24.6 18.8 131 21.3 23.1 92 WILLOW CREEK 8450 20.7 21.6 96 24.8 23.4 106 ----- ----- Basin wide percent of average 110 96 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 19.2 16.4 117 17.2 12.4 139 BLACK BEAR 7950 33.1 25.3 131 -M 27.3 * CANYON 7940 12.5 8.6 145 13.4 10.1 133 FISHER CREEK 9100 28.4 24.9 114 23.9 25.3 94 MADISON PLATEAU 7750 -M 16.6 * 20.7 17.8 116 NORTHEAST ENTRANCE 7350 9.0 6.6 136 10.7 8.5 126 PARKER PEAK 9400 16.9 14.7 115 -M 10.8 * SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157 THUMB DIVIDE 7980 15.3 11.7 131 15.0 15.7 96 TWO OCEAN PLATEAU 9360 24.6 18.8 131 21.3 23.1 92 WHISKEY CREEK 6800 13.9 11.5 121 16.6 14.8 112 WHITE MILL 8700 18.9 17.3 109 17.1 19.8 86 WOLVERINE 7650 11.0 8.2 134 10.1 9.0 112 ----- ----- Basin wide percent of average 124 110 WIND RIVER BURROUGHS CREEK 8750 12.1 10.7 113 13.2 11.6 114 COLD SPRINGS 9630 6.6 5.9 112 8.4 7.1 118 DEER PARK 9700 9.8 -M * 14.0 -M * HOBBS PARK 10100 10.9 10.2 107 10.6 9.4 113 LITTLE WARM 9620 9.1 7.4 123 10.1 9.1 111 SOUTH PASS 9040 11.3 11.6 97 12.7 11.1 114 ST. LAWRENCE ALT 8620 4.5 5.0 90 7.3 6.5 112 TOGWOTEE PASS 9580 -M 17.3 * 20.3 20.6 99 TOWNSEND CREEK 8700 5.7 6.4 89 8.2 8.0 102 ----- ----- Basin wide percent of average 105 109 BIGHORN BASIN BALD MTN. 9375 14.1 14.2 99 13.2 12.0 110 BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125 BLACKWATER 9780 21.5 14.4 149 18.7 12.5 150 BONE SPRINGS DIV 9350 11.1 10.9 102 11.2 9.6 117 EVENING STAR 9200 24.8 18.4 135 25.4 15.7 162 GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120 KIRWIN 9550 8.3 6.8 122 9.6 7.0 137 MARQUETTE 8760 6.1 5.3 115 6.8 5.9 115 MIDDLE POWDER 7760 5.0 8.0 62 11.0 8.0 138 OWL CREEK 8975 4.2 2.9 145 4.9 3.9 126 POWDER RIVER PASS 9480 8.4 7.2 117 10.5 8.0 131 SHELL CREEK 9580 12.2 10.5 116 10.9 9.1 120 SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157 SYLVAN ROAD 8120 12.6 8.8 143 14.6 11.4 128 TIMBER CREEK 7950 3.7 3.8 97 5.6 4.3 130 YOUNTS PEAK 8350 15.4 12.5 123 13.5 11.6 116 ----- ----- Basin wide percent of average 117 133 SHOSHONE RIVER BLACKWATER 9780 21.5 14.4 149 18.7 12.5 150 EVENING STAR 9200 24.8 18.4 135 25.4 15.7 162 KIRWIN 9550 8.3 6.8 122 9.6 7.0 137 MARQUETTE 8760 6.1 5.3 115 6.8 5.9 115 SYLVAN LAKE 8420 19.1 15.3 125 21.2 13.5 157 SYLVAN ROAD 8120 12.6 8.8 143 14.6 11.4 128 YOUNTS PEAK 8350 15.4 12.5 123 13.5 11.6 116 ----- ----- Basin wide percent of average 132 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.5 4.9 92 6.9 5.5 125 BIG GOOSE 7990 3.9 -M * 6.8 -M * BONE SPRINGS DIV 9350 11.1 10.9 102 11.2 9.6 117 BURGESS JUNCTION 7880 5.5 7.8 71 7.4 7.3 101 CLOUD PEAK RESERVOIR 9860 9.9 8.3 119 8.6 8.3 104 DOME LAKE 8880 5.8 9.2 63 7.6 8.9 85 GRAVE SPRINGS 8550 4.8 6.2 77 7.8 6.5 120 HANSEN SAWMILL 8760 3.7 4.7 79 5.9 5.1 116 MIDDLE POWDER 7760 5.0 8.0 62 11.0 8.0 138 POWDER RIVER PASS 9480 8.4 7.2 117 10.5 8.0 131 SUCKER CREEK 8880 6.8 7.8 87 8.9 8.8 101 TIE CREEK 6870 2.3 -M * 6.0 7.0 86 ----- ----- Basin wide percent of average 87 111 BELLE FOURCHE BLIND PARK 6890 5.3 7.4 72 12.3 6.3 195 NORTH RAPID CREEK 6130 4.1 -M * 10.6 -M * WARREN PEAK 6520 5.9 7.4 80 10.8 5.3 204 ----- ----- Basin wide percent of average 76 199 UPPER N. PLATTE RIVER COLUMBINE 9400 14.1 16.4 86 15.4 16.8 92 DIVIDE PEAK 8800 12.8 13.7 93 18.4 16.4 112 ELK RIVER 8700 -M 13.0 * 16.6 12.8 130 JOE WRIGHT 10120 14.5 14.4 101 20.0 16.9 118 NORTH FRENCH CREEK 10100 20.3 16.5 123 20.1 15.5 130 OLD BATTLE 10000 18.5 21.1 88 24.6 19.9 124 SOUTH BRUSH CREEK 8400 5.0 7.3 68 14.9 10.9 137 TOWER 10500 28.7 30.8 93 26.9 24.7 109 WEBBER SPRINGS 9200 12.7 18.0 71 18.1 17.0 106 WILLOW CREEK PASS 9540 8.1 7.5 108 9.2 8.0 115 ----- ----- Basin wide percent of average 92 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 14.2 16.4 87 16.2 12.5 130 CASPER MTN. 7900 6.9 9.7 71 12.4 8.8 141 DEADMAN HILL 10220 -M 11.4 * 13.7 10.6 129 DEER PARK 9700 9.8 -M * 14.0 -M * LAPRELE CREEK 8320 2.7 6.8 40 10.1 7.8 129 RENO HILL 8400 8.9 8.6 103 13.3 11.7 114 ROACH 9700 12.8 11.3 113 15.2 14.5 105 SAND LAKE 10080 22.9 21.8 105 20.8 13.4 155 SOUTH PASS 9040 11.3 11.6 97 12.7 11.1 114 WINDY PEAK 7840 3.7 4.7 79 9.4 6.0 157 ----- ----- Basin wide percent of average 92 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.7 7.6 114 12.7 11.1 114 DIVIDE PEAK 8800 12.8 13.7 93 18.4 16.4 112 OLD BATTLE 10000 18.5 21.1 88 24.6 19.9 124 SANDSTONE RS 8150 8.3 9.6 86 14.9 13.5 110 WHISKEY PARK 8950 17.2 19.0 91 20.8 20.3 102 ----- ----- Basin wide percent of average 92 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.9 9.8 111 10.1 12.2 83 BLIND BULL SUM 8650 18.8 19.6 96 15.3 17.3 88 EAST RIM DIVIDE 7930 9.1 9.6 95 9.4 11.4 82 ELKHART PARK G.S. 9400 9.0 9.2 98 9.6 12.0 80 GROS VENTRE SUMMIT 8775 9.6 10.8 89 9.8 11.9 82 KENDALL R.S. 7740 9.8 10.2 96 10.4 11.6 90 LOOMIS PARK 8240 -M 12.0 * 13.6 14.1 96 NEW FORK LAKE 8340 8.2 8.1 101 8.3 10.8 77 SNIDER BASIN 8250 9.4 10.2 92 9.9 11.4 87 SPRING CREEK DIVIDE 9000 17.5 18.7 94 17.9 19.9 90 TRIPLE PEAK 8500 16.8 17.9 94 17.9 23.3 77 ----- ----- Basin wide percent of average 96 85 LOWER GREEN RIVER HAMS FORK 7840 7.6 8.4 90 7.2 10.0 72 HEWINTA 9500 6.1 6.4 95 9.2 8.6 107 HICKERSON PARK 9150 3.9 3.7 105 6.6 6.1 108 HOLE-IN-ROCK 9150 4.5 3.4 132 7.1 6.1 116 INDIAN CREEK 9425 16.9 18.5 91 14.3 18.8 76 KELLEY R.S. 8180 10.0 11.1 90 11.7 14.0 84 STEEL CREEK PARK 10100 8.9 10.0 89 10.9 8.8 124 ----- ----- Basin wide percent of average 94 93 UPPER BEAR RIVER BUG LAKE 7950 11.5 13.3 86 11.5 13.1 88 HAYDEN FORK 9400 8.6 10.6 81 12.6 12.3 102 KELLEY R.S. 8180 10.0 11.1 90 11.7 14.0 84 LILY LAKE 9050 8.2 8.4 98 11.8 9.7 122 MONTE CRISTO 8960 15.0 17.9 84 16.5 17.0 97 SALT RIVER SUMMIT 7600 9.1 9.3 98 11.4 12.6 90 TRIAL LAKE 9960 10.9 16.3 67 12.1 15.7 77 ----- ----- Basin wide percent of average 84 93 ----------------------------------------------------------------------------- -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.