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 SUNDAY: MARCH 7 , 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 16.1 149 24.4 20.6 118 COTTONWOOD CREEK 7600 22.8 19.8 115 25.3 23.0 110 GRANITE CREEK 6770 20.4 16.1 127 21.5 21.7 99 GRASSY LAKE 7265 39.8 31.1 128 38.1 33.6 113 GROS VENTRE SUMMIT 8775 14.5 13.5 107 14.2 14.6 97 LEWIS LAKE DIVIDE 7860 39.7 30.9 128 -M 34.1 * PHILLIPS BENCH 8200 30.5 25.4 120 25.3 27.0 94 SALT RIVER SUMMIT 7600 14.6 12.6 116 16.7 15.5 108 SNAKE RIVER STATION 6920 21.6 16.8 129 24.5 23.6 104 SPRING CREEK DIVIDE 9000 26.4 24.4 108 25.5 24.9 102 THUMB DIVIDE 7980 22.3 14.9 150 20.9 19.3 108 TOGWOTEE PASS 9580 -M 21.7 * 26.7 25.5 105 TWO OCEAN PLATEAU 9360 34.3 23.3 147 -M 28.4 * WILLOW CREEK 8450 30.3 26.9 113 34.2 29.4 116 ----- ----- Basin wide percent of average 126 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.8 20.7 120 22.1 15.7 141 BLACK BEAR 7950 47.8 33.2 144 -M 35.2 * CANYON 7940 17.2 11.2 154 17.7 12.5 142 FISHER CREEK 9100 38.2 31.5 121 -M 31.9 * MADISON PLATEAU 7750 -M 21.5 * 24.6 22.7 108 NORTHEAST ENTRANCE 7350 11.7 8.4 139 13.4 10.5 128 PARKER PEAK 9400 21.8 18.9 115 -M 13.6 * SYLVAN LAKE 8420 24.0 19.3 124 25.7 16.9 152 THUMB DIVIDE 7980 22.3 14.9 150 20.9 19.3 108 TWO OCEAN PLATEAU 9360 34.3 23.3 147 -M 28.4 * WHISKEY CREEK 6800 19.5 15.1 129 19.6 18.8 104 WHITE MILL 8700 26.5 22.2 119 23.3 24.7 94 WOLVERINE 7650 13.5 10.5 129 12.1 11.3 107 ----- ----- Basin wide percent of average 132 118 WIND RIVER BURROUGHS CREEK 8750 16.2 13.6 119 17.4 14.5 120 COLD SPRINGS 9630 8.8 7.3 121 10.8 8.8 123 DEER PARK 9700 15.2 -M * 20.1 -M * HOBBS PARK 10100 15.8 12.7 124 14.3 11.8 121 LITTLE WARM 9620 13.0 9.7 134 14.1 11.3 125 SOUTH PASS 9040 16.2 14.5 112 17.3 14.4 120 ST. LAWRENCE ALT 8620 6.3 6.5 97 9.4 8.4 112 TOGWOTEE PASS 9580 -M 21.7 * 26.7 25.5 105 TOWNSEND CREEK 8700 8.7 8.4 104 11.5 10.3 112 ----- ----- Basin wide percent of average 117 116 BIGHORN BASIN BALD MTN. 9375 18.4 17.8 103 16.7 14.7 114 BEAR TRAP MEADOW 7900 6.9 6.2 111 8.8 6.7 131 BLACKWATER 9780 28.5 18.9 151 23.5 15.8 149 BONE SPRINGS DIV 9350 14.4 14.0 103 14.4 12.4 116 EVENING STAR 9200 32.1 23.5 137 -M 19.7 * GRAVE SPRINGS 8550 7.4 8.0 93 10.2 7.8 131 KIRWIN 9550 11.5 8.5 135 13.2 9.0 147 MARQUETTE 8760 7.3 6.8 107 8.0 7.6 105 MIDDLE POWDER 7760 9.2 10.2 90 13.5 9.7 139 OWL CREEK 8975 5.5 3.9 141 6.0 5.2 115 POWDER RIVER PASS 9480 11.7 9.3 126 13.2 9.8 135 SHELL CREEK 9580 15.2 13.1 116 14.0 11.1 126 SYLVAN LAKE 8420 24.0 19.3 124 25.7 16.9 152 SYLVAN ROAD 8120 16.3 11.7 139 18.4 14.1 130 TIMBER CREEK 7950 4.6 5.2 88 6.3 5.5 115 YOUNTS PEAK 8350 20.2 15.3 132 17.6 14.4 122 ----- ----- Basin wide percent of average 122 130 SHOSHONE RIVER BLACKWATER 9780 28.5 18.9 151 23.5 15.8 149 EVENING STAR 9200 32.1 23.5 137 -M 19.7 * KIRWIN 9550 11.5 8.5 135 13.2 9.0 147 MARQUETTE 8760 7.3 6.8 107 8.0 7.6 105 SYLVAN LAKE 8420 24.0 19.3 124 25.7 16.9 152 SYLVAN ROAD 8120 16.3 11.7 139 18.4 14.1 130 YOUNTS PEAK 8350 20.2 15.3 132 17.6 14.4 122 ----- ----- Basin wide percent of average 135 137 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 6.2 111 8.8 6.7 131 BIG GOOSE 7990 5.5 -M * 8.6 -M * BONE SPRINGS DIV 9350 14.4 14.0 103 14.4 12.4 116 BURGESS JUNCTION 7880 7.6 10.1 75 9.4 9.2 102 CLOUD PEAK RESERVOIR 9860 13.3 11.9 112 11.5 10.9 106 DOME LAKE 8880 6.9 11.8 58 9.8 10.9 90 GRAVE SPRINGS 8550 7.4 8.0 93 10.2 7.8 131 HANSEN SAWMILL 8760 5.1 6.0 85 7.4 6.4 116 MIDDLE POWDER 7760 9.2 10.2 90 13.5 9.7 139 POWDER RIVER PASS 9480 11.7 9.3 126 13.2 9.8 135 SUCKER CREEK 8880 9.3 10.2 91 11.5 11.0 105 TIE CREEK 6870 3.4 -M * 7.4 8.7 85 ----- ----- Basin wide percent of average 94 113 BELLE FOURCHE BLIND PARK 6890 7.5 9.5 79 14.4 8.1 178 NORTH RAPID CREEK 6130 5.4 -M * 11.9 -M * WARREN PEAK 6520 10.1 9.5 106 13.3 6.5 205 ----- ----- Basin wide percent of average 93 190 UPPER N. PLATTE RIVER COLUMBINE 9400 19.0 22.0 86 19.8 21.3 93 DIVIDE PEAK 8800 17.0 17.6 97 22.2 19.5 114 ELK RIVER 8700 16.9 17.4 97 20.0 16.2 123 JOE WRIGHT 10120 18.2 18.3 99 23.9 21.1 113 NORTH FRENCH CREEK 10100 26.2 21.5 122 26.2 19.8 132 OLD BATTLE 10000 25.0 27.3 92 31.7 25.6 124 SOUTH BRUSH CREEK 8400 11.1 10.2 109 17.3 13.6 127 TOWER 10500 39.3 39.0 101 35.4 31.2 113 WEBBER SPRINGS 9200 17.1 23.4 73 23.0 21.6 106 WILLOW CREEK PASS 9540 10.2 9.8 104 10.6 10.4 102 ----- ----- Basin wide percent of average 97 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.8 21.1 89 20.2 16.3 124 CASPER MTN. 7900 9.9 13.0 76 14.8 11.4 130 DEADMAN HILL 10220 15.3 14.1 109 15.9 13.7 116 DEER PARK 9700 15.2 -M * 20.1 -M * LAPRELE CREEK 8320 -M 8.8 * 13.3 9.6 139 RENO HILL 8400 12.3 11.4 108 16.9 15.5 109 ROACH 9700 14.9 14.7 101 17.5 18.0 97 SAND LAKE 10080 30.3 28.1 108 25.7 17.2 149 SOUTH PASS 9040 16.2 14.5 112 17.3 14.4 120 WINDY PEAK 7840 5.9 6.8 87 11.9 7.6 157 ----- ----- Basin wide percent of average 100 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.6 10.3 122 16.0 13.1 122 DIVIDE PEAK 8800 17.0 17.6 97 22.2 19.5 114 OLD BATTLE 10000 25.0 27.3 92 31.7 25.6 124 SANDSTONE RS 8150 12.0 12.8 94 18.6 16.0 116 WHISKEY PARK 8950 24.2 24.8 98 26.4 23.6 112 ----- ----- Basin wide percent of average 98 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.8 12.7 117 13.6 14.9 91 BLIND BULL SUM 8650 26.9 25.5 105 20.8 21.7 96 EAST RIM DIVIDE 7930 12.7 12.5 102 13.0 14.0 93 ELKHART PARK G.S. 9400 12.6 12.0 105 12.9 14.7 88 GROS VENTRE SUMMIT 8775 14.5 13.5 107 14.2 14.6 97 KENDALL R.S. 7740 14.7 13.3 111 14.8 14.3 103 LOOMIS PARK 8240 -M 15.6 * 18.9 17.3 109 NEW FORK LAKE 8340 11.6 10.2 114 11.1 13.3 83 SNIDER BASIN 8250 15.5 13.3 117 15.2 14.0 109 SPRING CREEK DIVIDE 9000 26.4 24.4 108 25.5 24.9 102 TRIPLE PEAK 8500 26.0 22.6 115 25.8 28.6 90 ----- ----- Basin wide percent of average 110 97 LOWER GREEN RIVER HAMS FORK 7840 13.3 11.1 120 10.1 12.2 83 HEWINTA 9500 10.4 9.1 114 12.7 10.8 118 HICKERSON PARK 9150 6.2 5.3 117 8.6 7.6 113 HOLE-IN-ROCK 9150 6.1 4.9 124 8.9 7.6 117 INDIAN CREEK 9425 26.5 24.3 109 21.4 23.3 92 KELLEY R.S. 8180 15.3 14.9 103 16.9 17.3 98 STEEL CREEK PARK 10100 12.8 13.3 96 14.6 10.8 135 ----- ----- Basin wide percent of average 109 104 UPPER BEAR RIVER BUG LAKE 7950 19.9 17.8 112 17.8 16.6 107 HAYDEN FORK 9400 14.1 14.4 98 17.9 16.0 112 KELLEY R.S. 8180 15.3 14.9 103 16.9 17.3 98 LILY LAKE 9050 12.0 11.1 108 16.0 12.3 130 MONTE CRISTO 8960 24.0 24.7 97 23.6 21.7 109 SALT RIVER SUMMIT 7600 14.6 12.6 116 16.7 15.5 108 TRIAL LAKE 9960 18.4 22.3 83 19.1 20.5 93 ----- ----- 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.