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 FRIDAY: MARCH 5 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.0 16.0 150 24.4 20.4 120 COTTONWOOD CREEK 7600 22.7 19.4 117 25.1 22.7 111 GRANITE CREEK 6770 20.3 15.9 128 21.4 21.5 100 GRASSY LAKE 7265 39.3 30.6 128 38.0 33.2 114 GROS VENTRE SUMMIT 8775 14.4 13.3 108 14.1 14.5 97 LEWIS LAKE DIVIDE 7860 39.6 30.4 130 -M 33.7 * PHILLIPS BENCH 8200 30.4 25.0 122 25.3 26.7 95 SALT RIVER SUMMIT 7600 14.5 12.4 117 16.4 15.4 106 SNAKE RIVER STATION 6920 21.4 16.6 129 24.4 23.3 105 SPRING CREEK DIVIDE 9000 26.4 24.0 110 25.5 24.6 104 THUMB DIVIDE 7980 22.2 14.7 151 21.0 19.1 110 TOGWOTEE PASS 9580 -M 21.4 * 26.6 25.3 105 TWO OCEAN PLATEAU 9360 34.3 22.9 150 -M 28.2 * WILLOW CREEK 8450 30.1 26.5 114 33.9 29.2 116 ----- ----- Basin wide percent of average 127 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.7 20.4 121 22.1 15.5 143 BLACK BEAR 7950 47.5 32.7 145 -M 34.7 * CANYON 7940 17.2 11.0 156 17.6 12.4 142 FISHER CREEK 9100 38.1 31.1 123 -M 31.5 * MADISON PLATEAU 7750 -M 21.2 * 24.6 22.4 110 NORTHEAST ENTRANCE 7350 11.7 8.3 141 13.4 10.4 129 PARKER PEAK 9400 21.7 18.6 117 -M 13.4 * SYLVAN LAKE 8420 23.8 19.0 125 25.6 16.7 153 THUMB DIVIDE 7980 22.2 14.7 151 21.0 19.1 110 TWO OCEAN PLATEAU 9360 34.3 22.9 150 -M 28.2 * WHISKEY CREEK 6800 19.5 14.9 131 19.6 18.5 106 WHITE MILL 8700 26.3 21.9 120 23.2 24.4 95 WOLVERINE 7650 13.4 10.4 129 12.0 11.2 107 ----- ----- Basin wide percent of average 133 119 WIND RIVER BURROUGHS CREEK 8750 16.1 13.4 120 17.4 14.3 122 COLD SPRINGS 9630 8.8 7.2 122 10.7 8.7 123 DEER PARK 9700 15.1 -M * 20.2 -M * HOBBS PARK 10100 15.6 12.5 125 14.2 11.6 122 LITTLE WARM 9620 12.8 9.5 135 14.1 11.1 127 SOUTH PASS 9040 16.2 14.3 113 17.3 14.2 122 ST. LAWRENCE ALT 8620 6.4 6.4 100 9.3 8.3 112 TOGWOTEE PASS 9580 -M 21.4 * 26.6 25.3 105 TOWNSEND CREEK 8700 8.5 8.3 102 11.3 10.1 112 ----- ----- Basin wide percent of average 118 117 BIGHORN BASIN BALD MTN. 9375 18.1 17.5 103 16.3 14.5 112 BEAR TRAP MEADOW 7900 6.5 6.1 107 8.5 6.5 131 BLACKWATER 9780 28.3 18.6 152 23.2 15.6 149 BONE SPRINGS DIV 9350 14.1 13.8 102 13.6 12.1 112 EVENING STAR 9200 31.7 23.2 137 -M 19.5 * GRAVE SPRINGS 8550 7.1 7.9 90 9.8 7.7 127 KIRWIN 9550 11.3 8.4 135 13.1 8.9 147 MARQUETTE 8760 7.1 6.7 106 7.7 7.4 104 MIDDLE POWDER 7760 8.1 10.0 81 13.2 9.5 139 OWL CREEK 8975 5.4 3.8 142 5.8 5.1 114 POWDER RIVER PASS 9480 11.5 9.1 126 13.0 9.7 134 SHELL CREEK 9580 14.9 12.9 116 13.7 10.9 126 SYLVAN LAKE 8420 23.8 19.0 125 25.6 16.7 153 SYLVAN ROAD 8120 16.3 11.5 142 18.4 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 14.3 123 ----- ----- Basin wide percent of average 121 130 SHOSHONE RIVER BLACKWATER 9780 28.3 18.6 152 23.2 15.6 149 EVENING STAR 9200 31.7 23.2 137 -M 19.5 * KIRWIN 9550 11.3 8.4 135 13.1 8.9 147 MARQUETTE 8760 7.1 6.7 106 7.7 7.4 104 SYLVAN LAKE 8420 23.8 19.0 125 25.6 16.7 153 SYLVAN ROAD 8120 16.3 11.5 142 18.4 13.9 132 YOUNTS PEAK 8350 20.1 15.1 133 17.6 14.3 123 ----- ----- Basin wide percent of average 135 138 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.5 6.1 107 8.5 6.5 131 BIG GOOSE 7990 5.0 -M * 8.0 -M * BONE SPRINGS DIV 9350 14.1 13.8 102 13.6 12.1 112 BURGESS JUNCTION 7880 7.3 10.0 73 9.1 9.0 101 CLOUD PEAK RESERVOIR 9860 13.0 11.6 112 11.0 10.7 103 DOME LAKE 8880 6.8 11.6 59 9.4 10.8 87 GRAVE SPRINGS 8550 7.1 7.9 90 9.8 7.7 127 HANSEN SAWMILL 8760 4.9 5.9 83 7.2 6.2 116 MIDDLE POWDER 7760 8.1 10.0 81 13.2 9.5 139 POWDER RIVER PASS 9480 11.5 9.1 126 13.0 9.7 134 SUCKER CREEK 8880 8.8 10.0 88 10.7 10.8 99 TIE CREEK 6870 3.0 -M * 7.0 8.6 81 ----- ----- Basin wide percent of average 92 111 BELLE FOURCHE BLIND PARK 6890 7.2 9.4 77 14.2 7.9 180 NORTH RAPID CREEK 6130 5.1 -M * 11.6 -M * WARREN PEAK 6520 9.5 9.4 101 12.9 6.4 202 ----- ----- Basin wide percent of average 89 190 UPPER N. PLATTE RIVER COLUMBINE 9400 18.8 21.7 87 19.4 21.0 92 DIVIDE PEAK 8800 16.9 17.3 98 21.8 19.2 114 ELK RIVER 8700 16.7 17.2 97 19.7 16.0 123 JOE WRIGHT 10120 18.0 18.0 100 23.6 20.8 113 NORTH FRENCH CREEK 10100 26.0 21.1 123 26.0 19.5 133 OLD BATTLE 10000 24.7 26.9 92 31.4 25.2 125 SOUTH BRUSH CREEK 8400 10.9 9.9 110 17.0 13.3 128 TOWER 10500 38.9 38.4 101 35.0 30.8 114 WEBBER SPRINGS 9200 16.9 23.0 73 22.8 21.3 107 WILLOW CREEK PASS 9540 10.2 9.6 106 10.7 10.2 105 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.8 20.7 91 20.1 16.0 126 CASPER MTN. 7900 9.9 12.8 77 14.8 11.2 132 DEADMAN HILL 10220 14.7 13.9 106 15.7 13.5 116 DEER PARK 9700 15.1 -M * 20.2 -M * LAPRELE CREEK 8320 -M 8.7 * 13.0 9.4 138 RENO HILL 8400 12.2 11.2 109 16.6 15.2 109 ROACH 9700 14.9 14.5 103 17.4 17.8 98 SAND LAKE 10080 30.0 27.7 108 25.4 17.0 149 SOUTH PASS 9040 16.2 14.3 113 17.3 14.2 122 WINDY PEAK 7840 6.0 6.6 91 11.6 7.4 157 ----- ----- Basin wide percent of average 101 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.6 10.2 124 15.8 12.9 122 DIVIDE PEAK 8800 16.9 17.3 98 21.8 19.2 114 OLD BATTLE 10000 24.7 26.9 92 31.4 25.2 125 SANDSTONE RS 8150 12.0 12.6 95 18.4 15.8 116 WHISKEY PARK 8950 24.0 24.4 98 25.2 23.2 109 ----- ----- Basin wide percent of average 99 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.5 12.5 116 13.3 14.8 90 BLIND BULL SUM 8650 26.8 25.1 107 20.8 21.5 97 EAST RIM DIVIDE 7930 12.7 12.3 103 13.0 13.8 94 ELKHART PARK G.S. 9400 12.4 11.8 105 12.9 14.6 88 GROS VENTRE SUMMIT 8775 14.4 13.3 108 14.1 14.5 97 KENDALL R.S. 7740 14.6 13.0 112 14.8 14.2 104 LOOMIS PARK 8240 -M 15.4 * 18.8 17.1 110 NEW FORK LAKE 8340 11.5 10.1 114 11.0 13.1 84 SNIDER BASIN 8250 15.5 13.1 118 15.2 13.8 110 SPRING CREEK DIVIDE 9000 26.4 24.0 110 25.5 24.6 104 TRIPLE PEAK 8500 25.7 22.3 115 25.6 28.4 90 ----- ----- Basin wide percent of average 111 97 LOWER GREEN RIVER HAMS FORK 7840 13.3 10.9 122 10.1 12.1 83 HEWINTA 9500 10.2 8.9 115 12.5 10.6 118 HICKERSON PARK 9150 6.2 5.2 119 8.5 7.5 113 HOLE-IN-ROCK 9150 6.2 4.8 129 8.7 7.5 116 INDIAN CREEK 9425 26.2 23.8 110 21.3 23.0 93 KELLEY R.S. 8180 15.2 14.7 103 16.8 17.1 98 STEEL CREEK PARK 10100 12.6 13.1 96 14.5 10.6 137 ----- ----- Basin wide percent of average 110 105 UPPER BEAR RIVER BUG LAKE 7950 19.8 17.5 113 17.7 16.4 108 HAYDEN FORK 9400 14.0 14.2 99 17.6 15.7 112 KELLEY R.S. 8180 15.2 14.7 103 16.8 17.1 98 LILY LAKE 9050 12.1 10.9 111 16.0 12.1 132 MONTE CRISTO 8960 24.0 24.3 99 23.5 21.4 110 SALT RIVER SUMMIT 7600 14.5 12.4 117 16.4 15.4 106 TRIAL LAKE 9960 18.3 21.9 84 19.0 20.3 94 ----- ----- Basin wide percent of average 102 107 ----------------------------------------------------------------------------- -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.