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 TUESDAY: MARCH 16 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.6 16.8 146 25.6 21.4 120 COTTONWOOD CREEK 7600 24.0 21.8 110 26.4 23.9 110 GRANITE CREEK 6770 21.3 17.2 124 22.7 22.5 101 GRASSY LAKE 7265 41.4 33.2 125 39.7 35.2 113 GROS VENTRE SUMMIT 8775 15.2 14.5 105 14.7 15.2 97 LEWIS LAKE DIVIDE 7860 40.5 33.0 123 38.9 35.8 109 PHILLIPS BENCH 8200 31.6 27.1 117 30.8 28.3 109 SALT RIVER SUMMIT 7600 15.6 13.4 116 17.7 16.2 109 SNAKE RIVER STATION 6920 22.1 17.8 124 25.0 24.7 101 SPRING CREEK DIVIDE 9000 27.9 25.9 108 26.8 26.0 103 THUMB DIVIDE 7980 -M 15.9 * -M 20.0 * TOGWOTEE PASS 9580 -M 23.0 * 27.5 26.8 103 TWO OCEAN PLATEAU 9360 34.9 24.8 141 -M 29.5 * WILLOW CREEK 8450 32.5 28.5 114 35.7 30.7 116 ----- ----- Basin wide percent of average 121 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.4 21.9 116 22.9 16.6 138 BLACK BEAR 7950 48.9 35.4 138 -M 37.4 * CANYON 7940 17.5 12.0 146 18.3 13.2 139 FISHER CREEK 9100 39.0 33.3 117 -M 33.8 * MADISON PLATEAU 7750 -M 22.8 * -M 24.2 * NORTHEAST ENTRANCE 7350 12.4 8.8 141 13.9 11.0 126 PARKER PEAK 9400 22.3 20.1 111 -M 14.4 * SYLVAN LAKE 8420 24.6 20.5 120 26.2 17.8 147 THUMB DIVIDE 7980 -M 15.9 * -M 20.0 * TWO OCEAN PLATEAU 9360 34.9 24.8 141 -M 29.5 * WHISKEY CREEK 6800 20.1 16.1 125 -M 20.0 * WHITE MILL 8700 27.1 23.6 115 24.3 26.2 93 WOLVERINE 7650 13.8 11.0 125 12.4 11.9 104 ----- ----- Basin wide percent of average 126 122* WIND RIVER BURROUGHS CREEK 8750 16.4 14.2 115 17.6 15.3 115 COLD SPRINGS 9630 8.9 7.7 116 11.0 9.5 116 DEER PARK 9700 15.8 -M * 20.7 -M * HOBBS PARK 10100 16.4 13.6 121 14.7 12.7 116 LITTLE WARM 9620 13.4 10.5 128 14.5 12.0 121 SOUTH PASS 9040 16.7 15.3 109 17.9 15.4 116 ST. LAWRENCE ALT 8620 6.7 7.0 96 9.5 9.1 104 TOGWOTEE PASS 9580 -M 23.0 * 27.5 26.8 103 TOWNSEND CREEK 8700 9.1 9.1 100 12.0 11.1 108 ----- ----- Basin wide percent of average 113 111 BIGHORN BASIN BALD MTN. 9375 19.0 18.9 101 17.7 15.7 113 BEAR TRAP MEADOW 7900 6.9 6.5 106 9.0 7.2 125 BLACKWATER 9780 29.1 20.3 143 24.0 16.6 145 BONE SPRINGS DIV 9350 15.4 15.0 103 15.3 13.3 115 EVENING STAR 9200 32.5 24.9 131 -M 20.8 * GRAVE SPRINGS 8550 8.0 8.6 93 10.5 8.5 124 KIRWIN 9550 12.0 9.1 132 13.7 9.7 141 MARQUETTE 8760 8.0 7.3 110 8.9 8.3 107 MIDDLE POWDER 7760 10.4 11.0 95 15.0 10.5 143 OWL CREEK 8975 5.9 4.1 144 6.6 5.5 120 POWDER RIVER PASS 9480 12.2 10.0 122 14.6 10.4 140 SHELL CREEK 9580 15.9 13.9 114 14.6 11.8 124 SYLVAN LAKE 8420 24.6 20.5 120 26.2 17.8 147 SYLVAN ROAD 8120 16.5 12.3 134 18.6 14.9 125 TIMBER CREEK 7950 4.8 5.6 86 6.4 6.0 107 YOUNTS PEAK 8350 20.5 16.1 127 18.2 15.3 119 ----- ----- Basin wide percent of average 118 128 SHOSHONE RIVER BLACKWATER 9780 29.1 20.3 143 24.0 16.6 145 EVENING STAR 9200 32.5 24.9 131 -M 20.8 * KIRWIN 9550 12.0 9.1 132 13.7 9.7 141 MARQUETTE 8760 8.0 7.3 110 8.9 8.3 107 SYLVAN LAKE 8420 24.6 20.5 120 26.2 17.8 147 SYLVAN ROAD 8120 16.5 12.3 134 18.6 14.9 125 YOUNTS PEAK 8350 20.5 16.1 127 18.2 15.3 119 ----- ----- Basin wide percent of average 130 133 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 6.5 106 9.0 7.2 125 BIG GOOSE 7990 6.2 -M * 9.3 -M * BONE SPRINGS DIV 9350 15.4 15.0 103 15.3 13.3 115 BURGESS JUNCTION 7880 8.3 10.8 77 10.0 10.0 100 CLOUD PEAK RESERVOIR 9860 14.4 13.1 110 12.8 11.8 108 DOME LAKE 8880 6.6 12.6 52 10.4 11.8 88 GRAVE SPRINGS 8550 8.0 8.6 93 10.5 8.5 124 HANSEN SAWMILL 8760 5.5 6.5 85 7.8 6.9 113 MIDDLE POWDER 7760 10.4 11.0 95 15.0 10.5 143 POWDER RIVER PASS 9480 12.2 10.0 122 14.6 10.4 140 SUCKER CREEK 8880 10.1 11.0 92 12.5 11.8 106 TIE CREEK 6870 3.8 -M * 8.0 9.6 83 ----- ----- Basin wide percent of average 93 113 BELLE FOURCHE BLIND PARK 6890 7.8 10.2 76 14.9 8.8 169 NORTH RAPID CREEK 6130 5.7 -M * 12.5 -M * WARREN PEAK 6520 10.7 10.2 105 13.9 7.1 196 ----- ----- Basin wide percent of average 91 181 UPPER N. PLATTE RIVER COLUMBINE 9400 20.5 23.5 87 21.0 22.4 94 DIVIDE PEAK 8800 17.6 18.9 93 22.6 20.7 109 ELK RIVER 8700 17.9 18.5 97 20.5 17.3 118 JOE WRIGHT 10120 19.4 19.7 98 25.2 22.5 112 NORTH FRENCH CREEK 10100 27.4 23.1 119 27.2 21.1 129 OLD BATTLE 10000 26.3 28.9 91 33.2 27.3 122 SOUTH BRUSH CREEK 8400 10.3 11.3 91 18.1 14.5 125 TOWER 10500 40.9 41.4 99 36.4 33.0 110 WEBBER SPRINGS 9200 17.8 25.1 71 24.1 22.9 105 WILLOW CREEK PASS 9540 11.0 10.6 104 11.3 11.2 101 ----- ----- Basin wide percent of average 95 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.5 22.8 77 20.8 17.4 120 CASPER MTN. 7900 10.7 14.1 76 15.6 12.3 127 DEADMAN HILL 10220 15.5 15.1 103 16.6 14.8 112 DEER PARK 9700 15.8 -M * 20.7 -M * LAPRELE CREEK 8320 -M 9.5 * 13.7 10.4 132 RENO HILL 8400 12.8 12.4 103 17.5 16.8 104 ROACH 9700 14.4 15.7 92 18.3 19.1 96 SAND LAKE 10080 31.7 30.0 106 26.5 18.3 145 SOUTH PASS 9040 16.7 15.3 109 17.9 15.4 116 WINDY PEAK 7840 6.3 7.7 82 12.3 8.3 148 ----- ----- Basin wide percent of average 94 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.0 10.8 120 16.3 13.9 117 DIVIDE PEAK 8800 17.6 18.9 93 22.6 20.7 109 OLD BATTLE 10000 26.3 28.9 91 33.2 27.3 122 SANDSTONE RS 8150 12.5 13.7 91 19.0 16.9 112 WHISKEY PARK 8950 -M 26.5 * 27.6 25.3 109 ----- ----- Basin wide percent of average 96 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.8 13.5 117 14.5 15.5 94 BLIND BULL SUM 8650 27.7 27.3 101 21.4 22.7 94 EAST RIM DIVIDE 7930 13.2 13.2 100 13.5 14.5 93 ELKHART PARK G.S. 9400 13.4 12.9 104 13.7 15.3 90 GROS VENTRE SUMMIT 8775 15.2 14.5 105 14.7 15.2 97 KENDALL R.S. 7740 14.8 14.4 103 15.4 14.9 103 LOOMIS PARK 8240 -M 16.6 * 19.3 18.0 107 NEW FORK LAKE 8340 12.1 10.7 113 11.7 13.8 85 SNIDER BASIN 8250 16.4 14.1 116 16.1 14.5 111 SPRING CREEK DIVIDE 9000 27.9 25.9 108 26.8 26.0 103 TRIPLE PEAK 8500 27.0 23.9 113 27.6 29.7 93 ----- ----- Basin wide percent of average 108 97 LOWER GREEN RIVER HAMS FORK 7840 13.9 11.9 117 10.7 12.8 84 HEWINTA 9500 11.1 10.1 110 13.5 11.6 116 HICKERSON PARK 9150 6.7 5.9 114 9.1 8.3 110 HOLE-IN-ROCK 9150 6.6 5.6 118 9.4 8.3 113 INDIAN CREEK 9425 28.0 26.3 106 22.9 24.5 93 KELLEY R.S. 8180 16.4 16.0 102 17.8 18.0 99 STEEL CREEK PARK 10100 13.8 14.4 96 15.6 11.5 136 ----- ----- Basin wide percent of average 107 104 UPPER BEAR RIVER BUG LAKE 7950 21.1 19.0 111 18.7 17.7 106 HAYDEN FORK 9400 15.7 15.5 101 19.6 17.1 115 KELLEY R.S. 8180 16.4 16.0 102 17.8 18.0 99 LILY LAKE 9050 13.0 11.9 109 17.1 13.2 130 MONTE CRISTO 8960 24.9 26.6 94 24.8 23.2 107 SALT RIVER SUMMIT 7600 15.6 13.4 116 17.7 16.2 109 TRIAL LAKE 9960 20.1 23.8 84 20.7 21.8 95 ----- ----- Basin wide percent of average 100 107 ----------------------------------------------------------------------------- -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.