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 2 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.7 15.8 150 24.3 20.2 120 COTTONWOOD CREEK 7600 22.4 18.7 120 25.0 22.4 112 GRANITE CREEK 6770 19.9 15.5 128 21.4 21.2 101 GRASSY LAKE 7265 38.7 29.8 130 37.8 32.7 116 GROS VENTRE SUMMIT 8775 14.2 13.0 109 13.9 14.3 97 LEWIS LAKE DIVIDE 7860 38.8 29.7 131 29.5 33.2 89 PHILLIPS BENCH 8200 29.8 24.4 122 25.3 26.2 97 SALT RIVER SUMMIT 7600 14.5 12.2 119 16.6 15.2 109 SNAKE RIVER STATION 6920 21.0 16.3 129 24.1 22.9 105 SPRING CREEK DIVIDE 9000 26.2 23.5 111 25.4 24.2 105 THUMB DIVIDE 7980 21.6 14.4 150 20.5 18.9 108 TOGWOTEE PASS 9580 -M 21.0 * 26.2 24.8 106 TWO OCEAN PLATEAU 9360 33.8 22.4 151 23.3 27.8 84 WILLOW CREEK 8450 30.0 26.0 115 33.6 28.7 117 ----- ----- Basin wide percent of average 128 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.3 20.0 122 21.9 15.2 144 BLACK BEAR 7950 46.6 32.0 146 -M 33.9 * CANYON 7940 16.7 10.8 155 17.3 12.2 142 FISHER CREEK 9100 37.5 30.5 123 -M 30.9 * MADISON PLATEAU 7750 -M 20.8 * 24.5 22.0 111 NORTHEAST ENTRANCE 7350 11.4 8.2 139 13.2 10.3 128 PARKER PEAK 9400 21.3 18.1 118 -M 13.2 * SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155 THUMB DIVIDE 7980 21.6 14.4 150 20.5 18.9 108 TWO OCEAN PLATEAU 9360 33.8 22.4 151 23.3 27.8 84 WHISKEY CREEK 6800 19.2 14.6 132 19.6 18.1 108 WHITE MILL 8700 26.0 21.4 121 23.1 24.0 96 WOLVERINE 7650 13.1 10.2 128 11.8 11.1 106 ----- ----- Basin wide percent of average 133 114 WIND RIVER BURROUGHS CREEK 8750 16.0 13.2 121 17.5 14.1 124 COLD SPRINGS 9630 8.8 7.1 124 10.6 8.5 125 DEER PARK 9700 15.1 -M * 20.1 -M * HOBBS PARK 10100 15.6 12.2 128 14.2 11.3 126 LITTLE WARM 9620 12.5 9.3 134 13.8 10.9 127 SOUTH PASS 9040 16.2 14.1 115 17.3 13.9 124 ST. LAWRENCE ALT 8620 6.4 6.3 102 9.3 8.1 115 TOGWOTEE PASS 9580 -M 21.0 * 26.2 24.8 106 TOWNSEND CREEK 8700 8.7 8.1 107 11.5 9.9 116 ----- ----- Basin wide percent of average 120 119 BIGHORN BASIN BALD MTN. 9375 17.9 17.1 105 16.5 14.2 116 BEAR TRAP MEADOW 7900 6.4 5.9 108 8.4 6.4 131 BLACKWATER 9780 27.7 18.2 152 23.0 15.3 150 BONE SPRINGS DIV 9350 14.0 13.5 104 13.9 11.8 118 EVENING STAR 9200 31.1 22.7 137 28.3 19.1 148 GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129 KIRWIN 9550 11.3 8.2 138 13.1 8.7 151 MARQUETTE 8760 7.2 6.6 109 7.8 7.2 108 MIDDLE POWDER 7760 8.1 9.8 83 13.4 9.3 144 OWL CREEK 8975 5.5 3.7 149 6.0 4.9 122 POWDER RIVER PASS 9480 11.3 8.9 127 13.1 9.5 138 SHELL CREEK 9580 14.8 12.7 117 13.7 10.7 128 SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155 SYLVAN ROAD 8120 16.0 11.3 142 18.1 13.7 132 TIMBER CREEK 7950 4.6 5.0 92 6.3 5.2 121 YOUNTS PEAK 8350 19.9 14.9 134 17.6 14.0 126 ----- ----- Basin wide percent of average 122 135 SHOSHONE RIVER BLACKWATER 9780 27.7 18.2 152 23.0 15.3 150 EVENING STAR 9200 31.1 22.7 137 28.3 19.1 148 KIRWIN 9550 11.3 8.2 138 13.1 8.7 151 MARQUETTE 8760 7.2 6.6 109 7.8 7.2 108 SYLVAN LAKE 8420 23.5 18.6 126 25.4 16.4 155 SYLVAN ROAD 8120 16.0 11.3 142 18.1 13.7 132 YOUNTS PEAK 8350 19.9 14.9 134 17.6 14.0 126 ----- ----- Basin wide percent of average 136 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.4 5.9 108 8.4 6.4 131 BIG GOOSE 7990 5.1 -M * 7.9 -M * BONE SPRINGS DIV 9350 14.0 13.5 104 13.9 11.8 118 BURGESS JUNCTION 7880 7.2 9.8 73 9.0 8.7 103 CLOUD PEAK RESERVOIR 9860 12.7 11.2 113 10.7 10.4 103 DOME LAKE 8880 7.1 11.4 62 9.7 10.5 92 GRAVE SPRINGS 8550 6.9 7.7 90 9.7 7.5 129 HANSEN SAWMILL 8760 4.6 5.8 79 6.9 6.1 113 MIDDLE POWDER 7760 8.1 9.8 83 13.4 9.3 144 POWDER RIVER PASS 9480 11.3 8.9 127 13.1 9.5 138 SUCKER CREEK 8880 8.7 9.8 89 11.0 10.6 104 TIE CREEK 6870 2.9 -M * 6.9 8.3 83 ----- ----- Basin wide percent of average 93 114 BELLE FOURCHE BLIND PARK 6890 7.0 9.2 76 14.1 7.7 183 NORTH RAPID CREEK 6130 5.0 -M * 11.6 -M * WARREN PEAK 6520 9.4 9.2 102 12.9 6.3 205 ----- ----- Basin wide percent of average 89 193 UPPER N. PLATTE RIVER COLUMBINE 9400 18.7 21.2 88 19.4 20.6 94 DIVIDE PEAK 8800 16.5 16.9 98 21.8 18.8 116 ELK RIVER 8700 16.3 16.8 97 19.7 15.6 126 JOE WRIGHT 10120 17.7 17.6 101 23.4 20.4 115 NORTH FRENCH CREEK 10100 25.5 20.6 124 25.8 19.0 136 OLD BATTLE 10000 24.3 26.4 92 31.1 24.7 126 SOUTH BRUSH CREEK 8400 11.1 9.5 117 16.9 13.0 130 TOWER 10500 38.3 37.6 102 34.7 30.2 115 WEBBER SPRINGS 9200 16.6 22.5 74 22.5 20.8 108 WILLOW CREEK PASS 9540 10.1 9.3 109 10.7 10.0 107 ----- ----- Basin wide percent of average 98 117 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.7 20.1 93 19.8 15.6 127 CASPER MTN. 7900 9.6 12.4 77 14.5 10.9 133 DEADMAN HILL 10220 14.3 13.6 105 15.2 13.1 116 DEER PARK 9700 15.1 -M * 20.1 -M * LAPRELE CREEK 8320 -M 8.5 * 12.6 9.2 137 RENO HILL 8400 11.6 10.9 106 16.0 14.7 109 ROACH 9700 14.5 14.1 103 16.9 17.4 97 SAND LAKE 10080 29.4 27.0 109 25.1 16.6 151 SOUTH PASS 9040 16.2 14.1 115 17.3 13.9 124 WINDY PEAK 7840 5.5 6.3 87 11.3 7.2 157 ----- ----- Basin wide percent of average 101 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 10.0 123 15.7 12.7 124 DIVIDE PEAK 8800 16.5 16.9 98 21.8 18.8 116 OLD BATTLE 10000 24.3 26.4 92 31.1 24.7 126 SANDSTONE RS 8150 11.6 12.3 94 18.2 15.5 117 WHISKEY PARK 8950 23.4 23.8 98 24.5 22.7 108 ----- ----- Basin wide percent of average 99 118 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.5 12.2 119 13.5 14.6 92 BLIND BULL SUM 8650 26.7 24.5 109 20.7 21.1 98 EAST RIM DIVIDE 7930 12.7 12.1 105 13.0 13.7 95 ELKHART PARK G.S. 9400 12.5 11.5 109 12.9 14.4 90 GROS VENTRE SUMMIT 8775 14.2 13.0 109 13.9 14.3 97 KENDALL R.S. 7740 14.6 12.6 116 14.8 14.0 106 LOOMIS PARK 8240 -M 15.0 * 18.8 16.9 111 NEW FORK LAKE 8340 11.5 10.0 115 11.1 13.0 85 SNIDER BASIN 8250 15.5 12.9 120 15.2 13.7 111 SPRING CREEK DIVIDE 9000 26.2 23.5 111 25.4 24.2 105 TRIPLE PEAK 8500 25.3 21.9 116 25.4 28.0 91 ----- ----- Basin wide percent of average 113 98 LOWER GREEN RIVER HAMS FORK 7840 13.1 10.6 124 10.0 12.0 83 HEWINTA 9500 10.0 8.6 116 12.3 10.3 119 HICKERSON PARK 9150 5.8 5.1 114 8.2 7.3 112 HOLE-IN-ROCK 9150 6.1 4.6 133 8.7 7.3 119 INDIAN CREEK 9425 26.0 23.1 113 21.3 22.6 94 KELLEY R.S. 8180 15.1 14.3 106 16.8 16.9 99 STEEL CREEK PARK 10100 12.5 12.7 98 14.4 10.4 138 ----- ----- Basin wide percent of average 112 106 UPPER BEAR RIVER BUG LAKE 7950 19.5 17.1 114 17.6 16.0 110 HAYDEN FORK 9400 13.8 13.8 100 17.4 15.3 114 KELLEY R.S. 8180 15.1 14.3 106 16.8 16.9 99 LILY LAKE 9050 11.7 10.7 109 15.6 11.8 132 MONTE CRISTO 8960 23.4 23.7 99 23.1 21.0 110 SALT RIVER SUMMIT 7600 14.5 12.2 119 16.6 15.2 109 TRIAL LAKE 9960 18.1 21.4 85 18.8 19.8 95 ----- ----- Basin wide percent of average 103 109 ----------------------------------------------------------------------------- -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.