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 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 23.9 15.9 150 24.3 20.4 119 COTTONWOOD CREEK 7600 22.5 19.2 117 25.1 22.6 111 GRANITE CREEK 6770 20.2 15.8 128 21.3 21.4 100 GRASSY LAKE 7265 39.2 30.3 129 38.0 33.0 115 GROS VENTRE SUMMIT 8775 14.4 13.2 109 14.1 14.4 98 LEWIS LAKE DIVIDE 7860 39.3 30.2 130 -M 33.6 * PHILLIPS BENCH 8200 30.1 24.8 121 25.3 26.5 95 SALT RIVER SUMMIT 7600 14.5 12.4 117 16.6 15.3 108 SNAKE RIVER STATION 6920 21.3 16.5 129 24.3 23.2 105 SPRING CREEK DIVIDE 9000 26.3 23.8 111 25.5 24.5 104 THUMB DIVIDE 7980 -M 14.6 * -M 19.0 * TOGWOTEE PASS 9580 -M 21.3 * 26.5 25.1 106 TWO OCEAN PLATEAU 9360 34.1 22.7 150 -M 28.1 * WILLOW CREEK 8450 30.0 26.4 114 33.9 29.0 117 ----- ----- Basin wide percent of average 126 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.7 20.3 122 22.1 15.4 144 BLACK BEAR 7950 47.2 32.5 145 -M 34.4 * CANYON 7940 17.0 11.0 155 17.7 12.3 144 FISHER CREEK 9100 37.9 30.9 123 -M 31.3 * MADISON PLATEAU 7750 -M 21.1 * 24.6 22.3 110 NORTHEAST ENTRANCE 7350 11.6 8.2 141 13.3 10.4 128 PARKER PEAK 9400 21.6 18.4 117 -M 13.4 * SYLVAN LAKE 8420 23.8 18.9 126 25.6 16.6 154 THUMB DIVIDE 7980 -M 14.6 * -M 19.0 * TWO OCEAN PLATEAU 9360 34.1 22.7 150 -M 28.1 * WHISKEY CREEK 6800 19.3 14.8 130 19.6 18.4 107 WHITE MILL 8700 26.2 21.7 121 23.2 24.3 95 WOLVERINE 7650 13.5 10.3 131 12.0 11.2 107 ----- ----- Basin wide percent of average 132 121 WIND RIVER BURROUGHS CREEK 8750 16.1 13.3 121 17.6 14.3 123 COLD SPRINGS 9630 8.8 7.2 122 10.7 8.6 124 DEER PARK 9700 15.1 -M * 20.1 -M * HOBBS PARK 10100 15.7 12.4 127 14.2 11.5 123 LITTLE WARM 9620 12.8 9.5 135 14.0 11.0 127 SOUTH PASS 9040 16.2 14.3 113 17.3 14.1 123 ST. LAWRENCE ALT 8620 6.4 6.4 100 9.3 8.2 113 TOGWOTEE PASS 9580 -M 21.3 * 26.5 25.1 106 TOWNSEND CREEK 8700 8.8 8.2 107 11.6 10.1 115 ----- ----- Basin wide percent of average 119 118 BIGHORN BASIN BALD MTN. 9375 17.9 17.4 103 16.6 14.4 115 BEAR TRAP MEADOW 7900 6.3 6.0 105 8.4 6.5 129 BLACKWATER 9780 28.3 18.5 153 23.3 15.5 150 BONE SPRINGS DIV 9350 14.0 13.7 102 14.1 12.0 118 EVENING STAR 9200 31.8 23.0 138 -M 19.4 * GRAVE SPRINGS 8550 7.0 7.8 90 9.7 7.6 128 KIRWIN 9550 11.4 8.3 137 13.3 8.8 151 MARQUETTE 8760 7.3 6.7 109 7.9 7.3 108 MIDDLE POWDER 7760 8.1 10.0 81 13.6 9.5 143 OWL CREEK 8975 5.5 3.8 145 6.0 5.0 120 POWDER RIVER PASS 9480 11.2 9.0 124 13.3 9.6 139 SHELL CREEK 9580 14.8 12.9 115 13.7 10.8 127 SYLVAN LAKE 8420 23.8 18.9 126 25.6 16.6 154 SYLVAN ROAD 8120 16.3 11.4 143 18.3 13.9 132 TIMBER CREEK 7950 4.6 5.1 90 6.3 5.3 119 YOUNTS PEAK 8350 20.1 15.1 133 17.6 14.2 124 ----- ----- Basin wide percent of average 122 132 SHOSHONE RIVER BLACKWATER 9780 28.3 18.5 153 23.3 15.5 150 EVENING STAR 9200 31.8 23.0 138 -M 19.4 * KIRWIN 9550 11.4 8.3 137 13.3 8.8 151 MARQUETTE 8760 7.3 6.7 109 7.9 7.3 108 SYLVAN LAKE 8420 23.8 18.9 126 25.6 16.6 154 SYLVAN ROAD 8120 16.3 11.4 143 18.3 13.9 132 YOUNTS PEAK 8350 20.1 15.1 133 17.6 14.2 124 ----- ----- Basin wide percent of average 136 139 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.3 6.0 105 8.4 6.5 129 BIG GOOSE 7990 5.1 -M * 8.0 -M * BONE SPRINGS DIV 9350 14.0 13.7 102 14.1 12.0 118 BURGESS JUNCTION 7880 7.2 9.9 73 9.0 8.9 101 CLOUD PEAK RESERVOIR 9860 12.8 11.5 111 11.0 10.6 104 DOME LAKE 8880 6.9 11.6 59 9.7 10.7 91 GRAVE SPRINGS 8550 7.0 7.8 90 9.7 7.6 128 HANSEN SAWMILL 8760 4.7 5.9 80 7.0 6.2 113 MIDDLE POWDER 7760 8.1 10.0 81 13.6 9.5 143 POWDER RIVER PASS 9480 11.2 9.0 124 13.3 9.6 139 SUCKER CREEK 8880 8.8 10.0 88 11.0 10.8 102 TIE CREEK 6870 3.0 -M * 7.0 8.5 82 ----- ----- Basin wide percent of average 91 113 BELLE FOURCHE BLIND PARK 6890 7.2 9.3 77 14.3 7.8 183 NORTH RAPID CREEK 6130 5.2 -M * 11.7 -M * WARREN PEAK 6520 9.5 9.3 102 13.0 6.4 203 ----- ----- Basin wide percent of average 90 192 UPPER N. PLATTE RIVER COLUMBINE 9400 18.8 21.5 87 19.5 20.9 93 DIVIDE PEAK 8800 16.5 17.2 96 21.8 19.1 114 ELK RIVER 8700 16.4 17.1 96 19.9 15.9 125 JOE WRIGHT 10120 17.8 17.9 99 23.4 20.7 113 NORTH FRENCH CREEK 10100 25.7 20.9 123 25.9 19.3 134 OLD BATTLE 10000 24.4 26.7 91 31.2 25.1 124 SOUTH BRUSH CREEK 8400 10.7 9.8 109 17.0 13.2 129 TOWER 10500 38.4 38.1 101 34.7 30.6 113 WEBBER SPRINGS 9200 16.6 22.9 72 22.6 21.1 107 WILLOW CREEK PASS 9540 10.1 9.5 106 10.8 10.2 106 ----- ----- Basin wide percent of average 97 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.7 20.5 91 19.9 15.9 125 CASPER MTN. 7900 9.8 12.6 78 14.6 11.1 132 DEADMAN HILL 10220 14.9 13.8 108 15.2 13.4 113 DEER PARK 9700 15.1 -M * 20.1 -M * LAPRELE CREEK 8320 -M 8.6 * 12.9 9.4 137 RENO HILL 8400 11.8 11.1 106 16.5 15.0 110 ROACH 9700 14.6 14.3 102 17.0 17.7 96 SAND LAKE 10080 29.6 27.4 108 25.2 16.9 149 SOUTH PASS 9040 16.2 14.3 113 17.3 14.1 123 WINDY PEAK 7840 5.7 6.5 88 11.5 7.3 158 ----- ----- Basin wide percent of average 101 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.4 10.1 123 15.7 12.9 122 DIVIDE PEAK 8800 16.5 17.2 96 21.8 19.1 114 OLD BATTLE 10000 24.4 26.7 91 31.2 25.1 124 SANDSTONE RS 8150 11.6 12.5 93 18.2 15.7 116 WHISKEY PARK 8950 23.4 24.2 97 24.9 23.1 108 ----- ----- Basin wide percent of average 97 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.6 12.4 118 13.5 14.7 92 BLIND BULL SUM 8650 26.8 24.9 108 20.8 21.3 98 EAST RIM DIVIDE 7930 12.7 12.3 103 13.0 13.8 94 ELKHART PARK G.S. 9400 12.5 11.7 107 12.9 14.5 89 GROS VENTRE SUMMIT 8775 14.4 13.2 109 14.1 14.4 98 KENDALL R.S. 7740 14.6 12.9 113 14.8 14.1 105 LOOMIS PARK 8240 -M 15.2 * 18.8 17.0 111 NEW FORK LAKE 8340 11.5 10.1 114 11.1 13.1 85 SNIDER BASIN 8250 15.4 13.1 118 15.2 13.8 110 SPRING CREEK DIVIDE 9000 26.3 23.8 111 25.5 24.5 104 TRIPLE PEAK 8500 25.5 22.2 115 25.6 28.3 90 ----- ----- Basin wide percent of average 111 98 LOWER GREEN RIVER HAMS FORK 7840 13.2 10.8 122 10.0 12.1 83 HEWINTA 9500 10.0 8.8 114 12.4 10.5 118 HICKERSON PARK 9150 5.7 5.2 110 8.2 7.4 111 HOLE-IN-ROCK 9150 5.9 4.7 126 8.7 7.4 118 INDIAN CREEK 9425 26.2 23.6 111 21.4 22.9 93 KELLEY R.S. 8180 15.2 14.6 104 16.8 17.0 99 STEEL CREEK PARK 10100 12.5 13.0 96 14.4 10.5 137 ----- ----- Basin wide percent of average 110 105 UPPER BEAR RIVER BUG LAKE 7950 19.6 17.4 113 17.6 16.3 108 HAYDEN FORK 9400 13.8 14.1 98 17.7 15.6 113 KELLEY R.S. 8180 15.2 14.6 104 16.8 17.0 99 LILY LAKE 9050 11.7 10.9 107 15.6 12.0 130 MONTE CRISTO 8960 23.5 24.1 98 23.2 21.3 109 SALT RIVER SUMMIT 7600 14.5 12.4 117 16.6 15.3 108 TRIAL LAKE 9960 18.1 21.7 83 18.8 20.1 94 ----- ----- Basin wide percent of average 101 107 ----------------------------------------------------------------------------- -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.