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 MONDAY: MARCH 1 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.3 15.7 148 24.3 20.1 121 COTTONWOOD CREEK 7600 21.7 18.5 117 24.1 22.3 108 GRANITE CREEK 6770 19.5 15.4 127 21.1 21.1 100 GRASSY LAKE 7265 38.4 29.6 130 37.1 32.5 114 GROS VENTRE SUMMIT 8775 14.0 12.9 109 13.6 14.2 96 LEWIS LAKE DIVIDE 7860 37.7 29.5 128 29.6 33.0 90 PHILLIPS BENCH 8200 29.6 24.2 122 25.2 26.1 97 SALT RIVER SUMMIT 7600 14.2 12.1 117 16.4 15.1 109 SNAKE RIVER STATION 6920 20.5 16.2 127 23.5 22.8 103 SPRING CREEK DIVIDE 9000 25.6 23.3 110 24.8 24.1 103 THUMB DIVIDE 7980 -M 14.3 * -M 18.8 * TOGWOTEE PASS 9580 -M 20.8 * 25.8 24.7 104 TWO OCEAN PLATEAU 9360 33.1 22.2 149 23.4 27.7 84 WILLOW CREEK 8450 29.3 25.8 114 33.5 28.6 117 ----- ----- Basin wide percent of average 125 103 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.1 19.9 121 21.7 15.1 144 BLACK BEAR 7950 46.5 31.7 147 -M 33.7 * CANYON 7940 16.6 10.7 155 17.3 12.1 143 FISHER CREEK 9100 37.0 30.3 122 -M 30.7 * MADISON PLATEAU 7750 -M 20.6 * 24.7 21.8 113 NORTHEAST ENTRANCE 7350 11.3 8.1 140 13.2 10.2 129 PARKER PEAK 9400 21.0 18.0 117 -M 13.1 * SYLVAN LAKE 8420 23.4 18.5 126 25.2 16.3 155 THUMB DIVIDE 7980 -M 14.3 * -M 18.8 * TWO OCEAN PLATEAU 9360 33.1 22.2 149 23.4 27.7 84 WHISKEY CREEK 6800 19.1 14.5 132 19.6 18.0 109 WHITE MILL 8700 25.4 21.2 120 22.6 23.8 95 WOLVERINE 7650 13.0 10.1 129 11.7 11.0 106 ----- ----- Basin wide percent of average 132 115 WIND RIVER BURROUGHS CREEK 8750 15.7 13.1 120 17.0 14.0 121 COLD SPRINGS 9630 8.7 7.0 124 10.6 8.4 126 DEER PARK 9700 14.7 -M * 19.5 -M * HOBBS PARK 10100 15.5 12.1 128 14.0 11.2 125 LITTLE WARM 9620 12.5 9.2 136 13.7 10.8 127 SOUTH PASS 9040 16.0 14.0 114 17.0 13.8 123 ST. LAWRENCE ALT 8620 6.3 6.2 102 9.3 8.0 116 TOGWOTEE PASS 9580 -M 20.8 * 25.8 24.7 104 TOWNSEND CREEK 8700 8.7 8.0 109 11.5 9.8 117 ----- ----- Basin wide percent of average 120 118 BIGHORN BASIN BALD MTN. 9375 17.6 17.0 104 16.4 14.1 116 BEAR TRAP MEADOW 7900 5.9 5.9 100 8.0 6.3 127 BLACKWATER 9780 27.7 18.0 154 22.8 15.2 150 BONE SPRINGS DIV 9350 13.9 13.4 104 14.0 11.7 120 EVENING STAR 9200 30.9 22.5 137 28.4 19.0 149 GRAVE SPRINGS 8550 6.7 7.6 88 9.4 7.4 127 KIRWIN 9550 11.2 8.1 138 12.9 8.6 150 MARQUETTE 8760 7.1 6.5 109 7.9 7.1 111 MIDDLE POWDER 7760 7.5 9.7 77 13.0 9.2 141 OWL CREEK 8975 5.6 3.7 151 6.2 4.9 127 POWDER RIVER PASS 9480 11.1 8.8 126 13.1 9.4 139 SHELL CREEK 9580 14.7 12.6 117 13.5 10.6 127 SYLVAN LAKE 8420 23.4 18.5 126 25.2 16.3 155 SYLVAN ROAD 8120 15.8 11.2 141 17.8 13.6 131 TIMBER CREEK 7950 4.6 4.9 94 6.3 5.1 124 YOUNTS PEAK 8350 19.5 14.8 132 17.2 13.9 124 ----- ----- Basin wide percent of average 122 135 SHOSHONE RIVER BLACKWATER 9780 27.7 18.0 154 22.8 15.2 150 EVENING STAR 9200 30.9 22.5 137 28.4 19.0 149 KIRWIN 9550 11.2 8.1 138 12.9 8.6 150 MARQUETTE 8760 7.1 6.5 109 7.9 7.1 111 SYLVAN LAKE 8420 23.4 18.5 126 25.2 16.3 155 SYLVAN ROAD 8120 15.8 11.2 141 17.8 13.6 131 YOUNTS PEAK 8350 19.5 14.8 132 17.2 13.9 124 ----- ----- Basin wide percent of average 136 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.9 5.9 100 8.0 6.3 127 BIG GOOSE 7990 4.9 -M * 7.9 -M * BONE SPRINGS DIV 9350 13.9 13.4 104 14.0 11.7 120 BURGESS JUNCTION 7880 7.1 9.7 73 8.8 8.6 102 CLOUD PEAK RESERVOIR 9860 12.5 11.1 113 10.8 10.3 105 DOME LAKE 8880 6.9 11.3 61 9.4 10.4 90 GRAVE SPRINGS 8550 6.7 7.6 88 9.4 7.4 127 HANSEN SAWMILL 8760 4.7 5.7 82 6.9 6.0 115 MIDDLE POWDER 7760 7.5 9.7 77 13.0 9.2 141 POWDER RIVER PASS 9480 11.1 8.8 126 13.1 9.4 139 SUCKER CREEK 8880 8.6 9.7 89 10.9 10.5 104 TIE CREEK 6870 2.9 -M * 6.8 8.2 83 ----- ----- Basin wide percent of average 91 113 BELLE FOURCHE BLIND PARK 6890 7.0 9.1 77 14.1 7.6 186 NORTH RAPID CREEK 6130 5.0 -M * 11.6 -M * WARREN PEAK 6520 9.2 9.1 101 12.9 6.2 208 ----- ----- Basin wide percent of average 89 196 UPPER N. PLATTE RIVER COLUMBINE 9400 18.4 21.0 88 19.1 20.5 93 DIVIDE PEAK 8800 16.4 16.8 98 21.8 18.7 117 ELK RIVER 8700 16.2 16.7 97 19.7 15.5 127 JOE WRIGHT 10120 17.4 17.4 100 23.0 20.2 114 NORTH FRENCH CREEK 10100 25.4 20.4 125 25.8 18.9 137 OLD BATTLE 10000 24.2 26.2 92 31.0 24.5 127 SOUTH BRUSH CREEK 8400 11.3 9.4 120 16.9 12.9 131 TOWER 10500 38.0 37.3 102 34.5 30.0 115 WEBBER SPRINGS 9200 16.5 22.3 74 22.4 20.7 108 WILLOW CREEK PASS 9540 10.0 9.2 109 10.7 9.9 108 ----- ----- Basin wide percent of average 99 117 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.3 19.9 92 19.4 15.5 125 CASPER MTN. 7900 9.5 12.3 77 14.4 10.8 133 DEADMAN HILL 10220 14.8 13.5 110 15.0 13.0 115 DEER PARK 9700 14.7 -M * 19.5 -M * LAPRELE CREEK 8320 -M 8.4 * 12.7 9.1 140 RENO HILL 8400 11.4 10.8 106 16.1 14.6 110 ROACH 9700 14.5 14.0 104 16.9 17.3 98 SAND LAKE 10080 29.0 26.8 108 24.8 16.5 150 SOUTH PASS 9040 16.0 14.0 114 17.0 13.8 123 WINDY PEAK 7840 5.5 6.2 89 11.4 7.1 161 ----- ----- Basin wide percent of average 101 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.1 9.9 122 15.7 12.6 125 DIVIDE PEAK 8800 16.4 16.8 98 21.8 18.7 117 OLD BATTLE 10000 24.2 26.2 92 31.0 24.5 127 SANDSTONE RS 8150 11.5 12.2 94 18.2 15.4 118 WHISKEY PARK 8950 23.2 23.6 98 24.5 22.5 109 ----- ----- Basin wide percent of average 99 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.2 12.1 117 13.1 14.5 90 BLIND BULL SUM 8650 26.2 24.3 108 20.4 21.0 97 EAST RIM DIVIDE 7930 12.5 12.0 104 12.9 13.6 95 ELKHART PARK G.S. 9400 12.4 11.4 109 12.7 14.3 89 GROS VENTRE SUMMIT 8775 14.0 12.9 109 13.6 14.2 96 KENDALL R.S. 7740 14.5 12.5 116 14.7 13.9 106 LOOMIS PARK 8240 -M 14.9 * 18.5 16.8 110 NEW FORK LAKE 8340 11.4 9.9 115 11.2 12.9 87 SNIDER BASIN 8250 15.1 12.8 118 14.8 13.6 109 SPRING CREEK DIVIDE 9000 25.6 23.3 110 24.8 24.1 103 TRIPLE PEAK 8500 24.7 21.7 114 25.4 27.9 91 ----- ----- Basin wide percent of average 112 97 LOWER GREEN RIVER HAMS FORK 7840 12.8 10.5 122 9.8 11.9 82 HEWINTA 9500 9.9 8.5 116 12.2 10.2 120 HICKERSON PARK 9150 5.9 5.0 118 8.2 7.2 114 HOLE-IN-ROCK 9150 6.0 4.5 133 8.7 7.2 121 INDIAN CREEK 9425 25.7 22.9 112 21.1 22.5 94 KELLEY R.S. 8180 14.9 14.2 105 16.5 16.8 98 STEEL CREEK PARK 10100 12.4 12.6 98 14.3 10.3 139 ----- ----- Basin wide percent of average 112 105 UPPER BEAR RIVER BUG LAKE 7950 19.2 17.0 113 17.4 15.9 109 HAYDEN FORK 9400 13.5 13.7 99 17.4 15.2 114 KELLEY R.S. 8180 14.9 14.2 105 16.5 16.8 98 LILY LAKE 9050 11.6 10.6 109 15.5 11.7 132 MONTE CRISTO 8960 23.3 23.5 99 23.1 20.8 111 SALT RIVER SUMMIT 7600 14.2 12.1 117 16.4 15.1 109 TRIAL LAKE 9960 17.9 21.2 84 18.6 19.7 94 ----- ----- Basin wide percent of average 102 108 ----------------------------------------------------------------------------- -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.