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 WEDNESDAY: MARCH 17 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.8 16.8 148 26.3 21.5 122 COTTONWOOD CREEK 7600 24.0 21.9 110 26.4 24.1 110 GRANITE CREEK 6770 21.0 17.3 121 22.7 22.6 100 GRASSY LAKE 7265 41.0 33.4 123 39.7 35.4 112 GROS VENTRE SUMMIT 8775 15.2 14.6 104 14.8 15.3 97 LEWIS LAKE DIVIDE 7860 40.5 33.1 122 38.7 35.9 108 PHILLIPS BENCH 8200 31.6 27.3 116 30.8 28.4 108 SALT RIVER SUMMIT 7600 15.5 13.4 116 17.6 16.2 109 SNAKE RIVER STATION 6920 22.0 17.8 124 25.1 24.8 101 SPRING CREEK DIVIDE 9000 27.8 26.1 107 26.7 26.2 102 THUMB DIVIDE 7980 -M 16.0 * -M 20.1 * TOGWOTEE PASS 9580 -M 23.2 * 27.6 26.9 103 TWO OCEAN PLATEAU 9360 35.2 24.9 141 -M 29.6 * WILLOW CREEK 8450 32.0 28.6 112 35.9 30.8 117 ----- ----- Basin wide percent of average 120 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.3 22.0 115 22.8 16.7 137 BLACK BEAR 7950 48.6 35.6 137 -M 37.6 * CANYON 7940 17.6 12.0 147 18.4 13.3 138 FISHER CREEK 9100 39.1 33.5 117 -M 34.0 * MADISON PLATEAU 7750 -M 22.9 * -M 24.3 * NORTHEAST ENTRANCE 7350 12.4 8.8 141 13.8 11.1 124 PARKER PEAK 9400 22.3 20.2 110 -M 14.4 * SYLVAN LAKE 8420 24.6 20.6 119 26.3 17.8 148 THUMB DIVIDE 7980 -M 16.0 * -M 20.1 * TWO OCEAN PLATEAU 9360 35.2 24.9 141 -M 29.6 * WHISKEY CREEK 6800 -M 16.2 * -M 20.2 * WHITE MILL 8700 27.2 23.7 115 24.1 26.3 92 WOLVERINE 7650 13.9 11.1 125 12.3 11.9 103 ----- ----- Basin wide percent of average 125 121* WIND RIVER BURROUGHS CREEK 8750 16.2 14.3 113 17.7 15.4 115 COLD SPRINGS 9630 9.1 7.8 117 10.9 9.5 115 DEER PARK 9700 15.9 -M * 20.7 -M * HOBBS PARK 10100 16.4 13.7 120 14.7 12.7 116 LITTLE WARM 9620 13.1 10.5 125 14.5 12.1 120 SOUTH PASS 9040 16.9 15.3 110 17.9 15.5 115 ST. LAWRENCE ALT 8620 6.5 7.1 92 9.5 9.1 104 TOGWOTEE PASS 9580 -M 23.2 * 27.6 26.9 103 TOWNSEND CREEK 8700 8.9 9.1 98 11.8 11.2 105 ----- ----- Basin wide percent of average 112 111 BIGHORN BASIN BALD MTN. 9375 19.0 19.0 100 17.6 15.8 111 BEAR TRAP MEADOW 7900 7.0 6.6 106 9.0 7.3 123 BLACKWATER 9780 29.0 20.5 141 23.9 16.7 143 BONE SPRINGS DIV 9350 15.1 15.1 100 15.0 13.5 111 EVENING STAR 9200 32.0 25.1 127 33.2 20.9 159 GRAVE SPRINGS 8550 8.0 8.6 93 10.5 8.5 124 KIRWIN 9550 12.0 9.1 132 13.8 9.7 142 MARQUETTE 8760 7.9 7.4 107 8.5 8.3 102 MIDDLE POWDER 7760 10.3 11.1 93 15.0 10.5 143 OWL CREEK 8975 5.9 4.2 140 6.4 5.6 114 POWDER RIVER PASS 9480 12.5 10.0 125 14.6 10.5 139 SHELL CREEK 9580 15.8 13.9 114 14.6 11.9 123 SYLVAN LAKE 8420 24.6 20.6 119 26.3 17.8 148 SYLVAN ROAD 8120 16.4 12.3 133 18.7 14.9 126 TIMBER CREEK 7950 4.8 5.7 84 6.5 6.1 107 YOUNTS PEAK 8350 20.4 16.2 126 18.2 15.3 119 ----- ----- Basin wide percent of average 117 130 SHOSHONE RIVER BLACKWATER 9780 29.0 20.5 141 23.9 16.7 143 EVENING STAR 9200 32.0 25.1 127 33.2 20.9 159 KIRWIN 9550 12.0 9.1 132 13.8 9.7 142 MARQUETTE 8760 7.9 7.4 107 8.5 8.3 102 SYLVAN LAKE 8420 24.6 20.6 119 26.3 17.8 148 SYLVAN ROAD 8120 16.4 12.3 133 18.7 14.9 126 YOUNTS PEAK 8350 20.4 16.2 126 18.2 15.3 119 ----- ----- Basin wide percent of average 128 138 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.0 6.6 106 9.0 7.3 123 BIG GOOSE 7990 6.1 -M * 9.3 -M * BONE SPRINGS DIV 9350 15.1 15.1 100 15.0 13.5 111 BURGESS JUNCTION 7880 8.2 10.8 76 9.9 10.1 98 CLOUD PEAK RESERVOIR 9860 14.3 13.2 108 12.6 11.8 107 DOME LAKE 8880 -M 12.7 * 10.6 11.8 90 GRAVE SPRINGS 8550 8.0 8.6 93 10.5 8.5 124 HANSEN SAWMILL 8760 5.6 6.6 85 7.9 7.0 113 MIDDLE POWDER 7760 10.3 11.1 93 15.0 10.5 143 POWDER RIVER PASS 9480 12.5 10.0 125 14.6 10.5 139 SUCKER CREEK 8880 9.8 11.1 88 12.2 11.8 103 TIE CREEK 6870 3.7 -M * 7.9 9.6 82 ----- ----- Basin wide percent of average 98 111 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 10.6 10.2 104 13.9 7.1 196 ----- ----- Basin wide percent of average 90 181 UPPER N. PLATTE RIVER COLUMBINE 9400 20.4 23.6 86 20.9 22.6 92 DIVIDE PEAK 8800 17.5 19.0 92 22.6 20.8 109 ELK RIVER 8700 17.9 18.6 96 20.8 17.4 120 JOE WRIGHT 10120 19.4 19.9 97 25.1 22.7 111 NORTH FRENCH CREEK 10100 27.3 23.2 118 27.2 21.3 128 OLD BATTLE 10000 26.2 29.1 90 33.2 27.4 121 SOUTH BRUSH CREEK 8400 10.4 11.5 90 18.1 14.7 123 TOWER 10500 41.0 41.7 98 36.4 33.2 110 WEBBER SPRINGS 9200 17.9 25.3 71 24.1 23.0 105 WILLOW CREEK PASS 9540 11.0 10.7 103 11.4 11.3 101 ----- ----- Basin wide percent of average 94 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.2 23.0 75 20.8 17.5 119 CASPER MTN. 7900 10.7 14.2 75 15.5 12.5 124 DEADMAN HILL 10220 15.4 15.2 101 16.6 14.9 111 DEER PARK 9700 15.9 -M * 20.7 -M * LAPRELE CREEK 8320 -M 9.5 * 13.7 10.5 130 RENO HILL 8400 12.8 12.5 102 17.4 17.0 102 ROACH 9700 14.5 15.8 92 18.3 19.3 95 SAND LAKE 10080 31.6 30.2 105 26.5 18.5 143 SOUTH PASS 9040 16.9 15.3 110 17.9 15.5 115 WINDY PEAK 7840 6.3 7.7 82 12.2 8.3 147 ----- ----- Basin wide percent of average 94 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.9 10.9 118 16.3 14.0 116 DIVIDE PEAK 8800 17.5 19.0 92 22.6 20.8 109 OLD BATTLE 10000 26.2 29.1 90 33.2 27.4 121 SANDSTONE RS 8150 12.5 13.8 91 18.9 17.1 111 WHISKEY PARK 8950 24.4 26.6 92 27.6 25.4 109 ----- ----- Basin wide percent of average 94 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.3 13.6 113 14.5 15.6 93 BLIND BULL SUM 8650 27.6 27.4 101 21.4 22.9 93 EAST RIM DIVIDE 7930 13.2 13.3 99 13.5 14.6 92 ELKHART PARK G.S. 9400 13.2 12.9 102 13.7 15.3 90 GROS VENTRE SUMMIT 8775 15.2 14.6 104 14.8 15.3 97 KENDALL R.S. 7740 15.2 14.4 106 15.3 14.9 103 LOOMIS PARK 8240 -M 16.6 * 19.3 18.1 107 NEW FORK LAKE 8340 12.2 10.8 113 11.5 13.9 83 SNIDER BASIN 8250 16.3 14.1 116 16.0 14.6 110 SPRING CREEK DIVIDE 9000 27.8 26.1 107 26.7 26.2 102 TRIPLE PEAK 8500 26.8 24.0 112 27.7 29.9 93 ----- ----- Basin wide percent of average 107 97 LOWER GREEN RIVER HAMS FORK 7840 13.9 11.9 117 10.7 12.8 84 HEWINTA 9500 11.4 10.2 112 13.5 11.7 115 HICKERSON PARK 9150 6.6 5.9 112 9.2 8.4 110 HOLE-IN-ROCK 9150 6.7 5.6 120 -M 8.4 * INDIAN CREEK 9425 27.8 26.4 105 22.8 24.6 93 KELLEY R.S. 8180 16.2 16.1 101 17.8 18.0 99 STEEL CREEK PARK 10100 13.7 14.6 94 15.6 11.6 134 ----- ----- Basin wide percent of average 106 103 UPPER BEAR RIVER BUG LAKE 7950 21.1 19.2 110 18.6 17.8 104 HAYDEN FORK 9400 15.8 15.5 102 19.6 17.2 114 KELLEY R.S. 8180 16.2 16.1 101 17.8 18.0 99 LILY LAKE 9050 13.3 12.0 111 17.1 13.3 129 MONTE CRISTO 8960 24.8 26.8 93 24.7 23.3 106 SALT RIVER SUMMIT 7600 15.5 13.4 116 17.6 16.2 109 TRIAL LAKE 9960 20.1 23.9 84 20.7 21.9 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.