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: MARCH 11 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.5 16.4 149 25.0 21.0 119 COTTONWOOD CREEK 7600 23.8 20.7 115 25.5 23.4 109 GRANITE CREEK 6770 21.2 16.6 128 22.6 22.0 103 GRASSY LAKE 7265 41.2 32.0 129 38.4 34.3 112 GROS VENTRE SUMMIT 8775 15.0 14.0 107 14.7 14.9 99 LEWIS LAKE DIVIDE 7860 40.5 31.9 127 -M 34.8 * PHILLIPS BENCH 8200 31.6 26.2 121 25.3 27.6 92 SALT RIVER SUMMIT 7600 15.3 13.0 118 17.3 15.8 109 SNAKE RIVER STATION 6920 22.0 17.3 127 25.0 24.1 104 SPRING CREEK DIVIDE 9000 27.4 25.1 109 26.0 25.4 102 THUMB DIVIDE 7980 -M 15.4 * -M 19.6 * TOGWOTEE PASS 9580 -M 22.3 * 27.0 26.1 103 TWO OCEAN PLATEAU 9360 34.7 24.0 145 -M 28.9 * WILLOW CREEK 8450 31.7 27.7 114 34.5 30.0 115 ----- ----- Basin wide percent of average 124 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.3 21.3 119 22.5 16.1 140 BLACK BEAR 7950 48.8 34.2 143 -M 36.2 * CANYON 7940 17.5 11.6 151 18.0 12.8 141 FISHER CREEK 9100 39.0 32.3 121 -M 32.8 * MADISON PLATEAU 7750 -M 22.1 * -M 23.4 * NORTHEAST ENTRANCE 7350 12.1 8.6 141 13.7 10.7 128 PARKER PEAK 9400 22.2 19.4 114 -M 13.9 * SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151 THUMB DIVIDE 7980 -M 15.4 * -M 19.6 * TWO OCEAN PLATEAU 9360 34.7 24.0 145 -M 28.9 * WHISKEY CREEK 6800 20.1 15.6 129 -M 19.4 * WHITE MILL 8700 27.1 22.8 119 24.1 25.4 95 WOLVERINE 7650 13.7 10.7 128 12.3 11.6 106 ----- ----- Basin wide percent of average 129 124* WIND RIVER BURROUGHS CREEK 8750 16.3 13.9 117 17.6 14.9 118 COLD SPRINGS 9630 8.9 7.5 119 10.8 9.1 119 DEER PARK 9700 15.6 -M * 20.5 -M * HOBBS PARK 10100 15.9 13.1 121 14.4 12.2 118 LITTLE WARM 9620 13.1 10.1 130 14.3 11.6 123 SOUTH PASS 9040 16.5 14.9 111 17.5 14.9 117 ST. LAWRENCE ALT 8620 6.5 6.8 96 9.4 8.7 108 TOGWOTEE PASS 9580 -M 22.3 * 27.0 26.1 103 TOWNSEND CREEK 8700 8.4 8.7 97 11.3 10.7 106 ----- ----- Basin wide percent of average 114 113 BIGHORN BASIN BALD MTN. 9375 18.9 18.3 103 17.4 15.2 114 BEAR TRAP MEADOW 7900 7.1 6.3 113 8.9 6.9 129 BLACKWATER 9780 28.7 19.6 146 23.8 16.1 148 BONE SPRINGS DIV 9350 15.0 14.5 103 15.0 12.8 117 EVENING STAR 9200 32.2 24.1 134 -M 20.2 * GRAVE SPRINGS 8550 7.8 8.2 95 10.4 8.1 128 KIRWIN 9550 11.8 8.7 136 13.6 9.3 146 MARQUETTE 8760 7.6 7.1 107 8.3 7.9 105 MIDDLE POWDER 7760 10.2 10.6 96 14.7 10.0 147 OWL CREEK 8975 5.8 4.0 145 6.4 5.3 121 POWDER RIVER PASS 9480 12.4 9.6 129 14.6 10.1 145 SHELL CREEK 9580 15.8 13.5 117 14.6 11.4 128 SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151 SYLVAN ROAD 8120 16.5 12.0 138 18.7 14.4 130 TIMBER CREEK 7950 4.6 5.4 85 6.3 5.7 111 YOUNTS PEAK 8350 20.4 15.7 130 17.9 14.8 121 ----- ----- Basin wide percent of average 121 131 SHOSHONE RIVER BLACKWATER 9780 28.7 19.6 146 23.8 16.1 148 EVENING STAR 9200 32.2 24.1 134 -M 20.2 * KIRWIN 9550 11.8 8.7 136 13.6 9.3 146 MARQUETTE 8760 7.6 7.1 107 8.3 7.9 105 SYLVAN LAKE 8420 24.4 19.9 123 26.2 17.3 151 SYLVAN ROAD 8120 16.5 12.0 138 18.7 14.4 130 YOUNTS PEAK 8350 20.4 15.7 130 17.9 14.8 121 ----- ----- Basin wide percent of average 132 136 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.1 6.3 113 8.9 6.9 129 BIG GOOSE 7990 6.1 -M * 9.1 -M * BONE SPRINGS DIV 9350 15.0 14.5 103 15.0 12.8 117 BURGESS JUNCTION 7880 8.1 10.4 78 9.9 9.5 104 CLOUD PEAK RESERVOIR 9860 14.0 12.5 112 11.9 11.3 105 DOME LAKE 8880 7.2 12.2 59 10.6 11.3 94 GRAVE SPRINGS 8550 7.8 8.2 95 10.4 8.1 128 HANSEN SAWMILL 8760 5.5 6.3 87 7.8 6.6 118 MIDDLE POWDER 7760 10.2 10.6 96 14.7 10.0 147 POWDER RIVER PASS 9480 12.4 9.6 129 14.6 10.1 145 SUCKER CREEK 8880 9.9 10.6 93 12.1 11.3 107 TIE CREEK 6870 3.7 -M * 7.9 9.1 87 ----- ----- Basin wide percent of average 96 116 BELLE FOURCHE BLIND PARK 6890 7.9 9.8 81 14.7 8.4 175 NORTH RAPID CREEK 6130 5.7 -M * 12.2 -M * WARREN PEAK 6520 10.6 9.8 108 13.7 6.8 201 ----- ----- Basin wide percent of average 94 187 UPPER N. PLATTE RIVER COLUMBINE 9400 20.1 22.7 89 20.6 21.8 94 DIVIDE PEAK 8800 17.3 18.2 95 22.5 20.0 112 ELK RIVER 8700 17.5 17.9 98 20.3 16.7 122 JOE WRIGHT 10120 18.9 19.0 99 24.8 21.7 114 NORTH FRENCH CREEK 10100 27.0 22.2 122 27.2 20.4 133 OLD BATTLE 10000 26.0 28.0 93 32.9 26.3 125 SOUTH BRUSH CREEK 8400 10.4 10.7 97 18.1 14.0 129 TOWER 10500 40.7 40.1 101 36.0 32.0 112 WEBBER SPRINGS 9200 17.7 24.2 73 23.8 22.2 107 WILLOW CREEK PASS 9540 10.7 10.1 106 10.9 10.8 101 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.9 21.8 87 20.7 16.8 123 CASPER MTN. 7900 10.6 13.4 79 15.4 11.8 131 DEADMAN HILL 10220 15.0 14.6 103 16.2 14.2 114 DEER PARK 9700 15.6 -M * 20.5 -M * LAPRELE CREEK 8320 -M 9.1 * 13.5 10.0 135 RENO HILL 8400 12.7 11.9 107 17.1 16.1 106 ROACH 9700 14.4 15.1 95 18.1 18.5 98 SAND LAKE 10080 31.3 28.9 108 26.4 17.7 149 SOUTH PASS 9040 16.5 14.9 111 17.5 14.9 117 WINDY PEAK 7840 6.1 7.2 85 12.0 7.9 152 ----- ----- Basin wide percent of average 98 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.0 10.5 124 16.2 13.5 120 DIVIDE PEAK 8800 17.3 18.2 95 22.5 20.0 112 OLD BATTLE 10000 26.0 28.0 93 32.9 26.3 125 SANDSTONE RS 8150 12.4 13.2 94 18.9 16.4 115 WHISKEY PARK 8950 25.1 25.5 98 26.3 24.3 108 ----- ----- Basin wide percent of average 98 116 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.3 13.0 118 14.2 15.2 93 BLIND BULL SUM 8650 27.3 26.3 104 21.2 22.2 95 EAST RIM DIVIDE 7930 13.0 12.9 101 13.3 14.2 94 ELKHART PARK G.S. 9400 13.0 12.4 105 13.3 14.9 89 GROS VENTRE SUMMIT 8775 15.0 14.0 107 14.7 14.9 99 KENDALL R.S. 7740 15.0 13.9 108 15.1 14.5 104 LOOMIS PARK 8240 -M 16.0 * 19.2 17.6 109 NEW FORK LAKE 8340 11.9 10.5 113 11.3 13.5 84 SNIDER BASIN 8250 16.1 13.7 118 15.8 14.2 111 SPRING CREEK DIVIDE 9000 27.4 25.1 109 26.0 25.4 102 TRIPLE PEAK 8500 26.6 23.2 115 26.8 29.1 92 ----- ----- Basin wide percent of average 109 98 LOWER GREEN RIVER HAMS FORK 7840 13.8 11.5 120 10.6 12.5 85 HEWINTA 9500 10.8 9.6 113 13.2 11.1 119 HICKERSON PARK 9150 6.6 5.6 118 9.0 7.9 114 HOLE-IN-ROCK 9150 6.4 5.2 123 9.1 7.9 115 INDIAN CREEK 9425 27.6 25.2 110 22.5 23.8 95 KELLEY R.S. 8180 16.0 15.4 104 17.6 17.6 100 STEEL CREEK PARK 10100 13.5 13.8 98 15.3 11.1 138 ----- ----- Basin wide percent of average 110 106 UPPER BEAR RIVER BUG LAKE 7950 20.7 18.4 113 18.3 17.1 107 HAYDEN FORK 9400 15.5 14.9 104 18.7 16.5 113 KELLEY R.S. 8180 16.0 15.4 104 17.6 17.6 100 LILY LAKE 9050 12.8 11.5 111 16.9 12.7 133 MONTE CRISTO 8960 25.1 25.6 98 24.6 22.4 110 SALT RIVER SUMMIT 7600 15.3 13.0 118 17.3 15.8 109 TRIAL LAKE 9960 19.5 23.0 85 20.2 21.1 96 ----- ----- Basin wide percent of average 103 108 ----------------------------------------------------------------------------- -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.