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 WEDNESDAY: APRIL 28 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.4 11.7 158 28.9 25.0 116 COTTONWOOD CREEK 7600 24.9 20.7 121 31.4 28.0 113 GRANITE CREEK 6770 18.7 14.0 135 24.5 26.7 93 GRASSY LAKE 7265 42.8 34.8 124 44.8 41.7 108 GROS VENTRE SUMMIT 8775 16.9 14.4 119 17.4 18.0 97 LEWIS LAKE DIVIDE 7860 40.7 34.9 117 42.8 42.3 102 PHILLIPS BENCH 8200 36.4 29.9 123 34.3 33.4 103 SALT RIVER SUMMIT 7600 16.0 11.5 141 20.7 19.2 108 SNAKE RIVER STATION 6920 17.4 16.9 103 27.9 29.2 96 SPRING CREEK DIVIDE 9000 34.5 29.7 117 32.2 30.7 105 THUMB DIVIDE 7980 -M 15.6 * -M 23.4 * TOGWOTEE PASS 9580 -M 28.2 * 31.7 31.7 100 TWO OCEAN PLATEAU 9360 38.8 27.5 142 34.4 34.4 100 WILLOW CREEK 8450 34.2 31.9 107 42.3 35.9 118 ----- ----- Basin wide percent of average 123 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.7 26.0 99 26.2 21.0 125 BLACK BEAR 7950 -M 39.9 * 49.2 46.0 107 CANYON 7940 16.7 11.5 147 20.7 16.2 128 FISHER CREEK 9100 38.4 38.7 100 40.3 41.8 97 MADISON PLATEAU 7750 -M 24.2 * 34.5 29.7 117 NORTHEAST ENTRANCE 7350 8.0 6.5 122 15.5 13.9 113 PARKER PEAK 9400 27.2 23.7 115 -M 18.0 * SYLVAN LAKE 8420 27.2 23.9 114 30.7 22.2 139 THUMB DIVIDE 7980 -M 15.6 * -M 23.4 * TWO OCEAN PLATEAU 9360 38.8 27.5 142 34.4 34.4 100 WHISKEY CREEK 6800 21.4 15.9 136 26.4 24.7 107 WHITE MILL 8700 30.0 26.4 115 27.4 32.3 85 WOLVERINE 7650 10.0 8.9 114 14.1 15.0 95 ----- ----- Basin wide percent of average 117 108 WIND RIVER BURROUGHS CREEK 8750 18.2 13.5 136 19.9 19.2 104 COLD SPRINGS 9630 14.6 7.3 203 18.2 13.0 142 DEER PARK 9700 25.2 -M * 30.5 -M * HOBBS PARK 10100 27.4 17.9 154 24.7 17.0 146 LITTLE WARM 9620 17.7 11.0 161 19.9 16.2 124 SOUTH PASS 9040 24.9 18.2 138 -M 20.4 * ST. LAWRENCE ALT 8620 13.6 5.8 235 -M 12.4 * TOGWOTEE PASS 9580 -M 28.2 * 31.7 31.7 100 TOWNSEND CREEK 8700 -M 9.7 * -M 15.4 * ----- ----- Basin wide percent of average 159 119 BIGHORN BASIN BALD MTN. 9375 22.9 23.9 97 21.5 20.5 105 BEAR TRAP MEADOW 7900 2.7 4.8 55 13.0 10.5 125 BLACKWATER 9780 34.5 25.7 135 28.0 20.4 138 BONE SPRINGS DIV 9350 21.2 18.4 115 21.2 17.9 119 EVENING STAR 9200 36.3 30.7 119 38.0 25.7 149 GRAVE SPRINGS 8550 11.5 11.5 100 15.5 12.2 128 KIRWIN 9550 15.5 11.6 133 17.7 13.1 136 MARQUETTE 8760 15.5 8.7 179 16.5 13.2 126 MIDDLE POWDER 7760 18.2 14.6 124 21.0 14.6 144 OWL CREEK 8975 8.9 3.8 238 9.9 8.0 123 POWDER RIVER PASS 9480 13.5 10.9 125 18.2 14.5 127 SHELL CREEK 9580 18.7 16.9 111 18.0 15.7 115 SYLVAN LAKE 8420 27.2 23.9 114 30.7 22.2 139 SYLVAN ROAD 8120 14.2 8.5 168 21.2 18.4 116 TIMBER CREEK 7950 9.4 6.3 151 12.6 9.9 129 YOUNTS PEAK 8350 21.5 18.4 117 20.7 19.2 109 ----- ----- Basin wide percent of average 123 127 SHOSHONE RIVER BLACKWATER 9780 34.5 25.7 135 28.0 20.4 138 EVENING STAR 9200 36.3 30.7 119 38.0 25.7 149 KIRWIN 9550 15.5 11.6 133 17.7 13.1 136 MARQUETTE 8760 15.5 8.7 179 16.5 13.2 126 SYLVAN LAKE 8420 27.2 23.9 114 30.7 22.2 139 SYLVAN ROAD 8120 14.2 8.5 168 21.2 18.4 116 YOUNTS PEAK 8350 21.5 18.4 117 20.7 19.2 109 ----- ----- Basin wide percent of average 130 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.7 4.8 55 13.0 10.5 125 BIG GOOSE 7990 11.0 -M * 16.0 -M * BONE SPRINGS DIV 9350 21.2 18.4 115 21.2 17.9 119 BURGESS JUNCTION 7880 12.4 13.5 92 15.5 14.2 109 CLOUD PEAK RESERVOIR 9860 22.2 17.7 126 21.0 16.9 125 DOME LAKE 8880 -M 15.0 * 15.9 16.2 99 GRAVE SPRINGS 8550 11.5 11.5 100 15.5 12.2 128 HANSEN SAWMILL 8760 6.6 7.1 93 13.0 10.1 129 MIDDLE POWDER 7760 18.2 14.6 124 21.0 14.6 144 POWDER RIVER PASS 9480 13.5 10.9 125 18.2 14.5 127 SUCKER CREEK 8880 15.0 13.9 108 18.9 16.2 117 TIE CREEK 6870 -M -M * -M 13.6 * ----- ----- Basin wide percent of average 110 121 BELLE FOURCHE BLIND PARK 6890 2.0 10.0 21 17.9 13.5 132 NORTH RAPID CREEK 6130 3.4 -M * 16.4 -M * WARREN PEAK 6520 9.6 10.0 96 13.2 10.1 131 ----- ----- Basin wide percent of average 59 132 UPPER N. PLATTE RIVER COLUMBINE 9400 18.2 22.7 81 26.9 27.9 97 DIVIDE PEAK 8800 23.0 19.9 117 29.7 26.9 111 ELK RIVER 8700 16.4 17.0 97 26.2 21.9 120 JOE WRIGHT 10120 23.7 24.7 96 30.5 29.9 103 NORTH FRENCH CREEK 10100 38.3 29.2 131 36.7 27.7 133 OLD BATTLE 10000 36.8 37.8 98 42.9 35.3 122 SOUTH BRUSH CREEK 8400 10.1 11.1 91 22.9 20.2 114 TOWER 10500 54.4 50.8 108 45.8 42.7 108 WEBBER SPRINGS 9200 22.0 26.5 84 31.4 30.2 104 WILLOW CREEK PASS 9540 15.0 13.5 112 14.2 15.2 94 ----- ----- Basin wide percent of average 102 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.4 29.0 81 29.0 23.4 124 CASPER MTN. 7900 15.5 18.2 86 21.2 18.4 116 DEADMAN HILL 10220 20.2 18.9 107 21.7 20.7 105 DEER PARK 9700 25.2 -M * 30.5 -M * LAPRELE CREEK 8320 .0 7.0 0 19.2 14.5 132 RENO HILL 8400 18.2 13.9 132 24.2 22.2 110 ROACH 9700 19.0 18.2 105 24.9 25.4 98 SAND LAKE 10080 45.3 37.0 123 36.3 24.4 149 SOUTH PASS 9040 24.9 18.2 138 -M 20.4 * WINDY PEAK 7840 8.5 8.2 103 16.7 12.0 139 ----- ----- Basin wide percent of average 104 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.3 6.0 122 21.5 18.2 119 DIVIDE PEAK 8800 23.0 19.9 117 29.7 26.9 111 OLD BATTLE 10000 36.8 37.8 98 42.9 35.3 122 SANDSTONE RS 8150 10.5 11.0 96 24.4 22.7 108 WHISKEY PARK 8950 31.5 29.9 106 34.8 33.5 104 ----- ----- Basin wide percent of average 105 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.2 14.2 121 17.9 18.4 97 BLIND BULL SUM 8650 30.9 24.4 128 24.4 26.7 92 EAST RIM DIVIDE 7930 14.5 15.0 97 15.7 17.2 92 ELKHART PARK G.S. 9400 15.5 14.2 110 17.0 18.2 94 GROS VENTRE SUMMIT 8775 16.9 14.4 119 17.4 18.0 97 KENDALL R.S. 7740 13.7 11.1 124 18.2 17.5 105 LOOMIS PARK 8240 -M 15.5 * 22.2 21.2 105 NEW FORK LAKE 8340 12.7 9.5 134 14.0 16.4 86 SNIDER BASIN 8250 20.0 13.5 149 20.2 17.2 118 SPRING CREEK DIVIDE 9000 34.5 29.7 117 32.2 30.7 105 TRIPLE PEAK 8500 30.2 25.4 119 33.3 34.8 96 ----- ----- Basin wide percent of average 121 99 LOWER GREEN RIVER HAMS FORK 7840 12.5 5.8 214 15.4 15.1 102 HEWINTA 9500 12.7 6.0 212 17.4 16.0 109 HICKERSON PARK 9150 6.1 3.7 170 13.4 12.1 110 HOLE-IN-ROCK 9150 9.5 3.2 304 13.7 12.1 114 INDIAN CREEK 9425 35.9 29.2 123 30.4 29.0 105 KELLEY R.S. 8180 17.9 15.5 115 22.2 21.2 105 STEEL CREEK PARK 10100 18.9 18.9 100 20.5 15.9 130 ----- ----- Basin wide percent of average 138 110 UPPER BEAR RIVER BUG LAKE 7950 24.4 16.9 146 24.9 22.4 112 HAYDEN FORK 9400 13.1 7.5 178 23.7 22.7 105 KELLEY R.S. 8180 17.9 15.5 115 22.2 21.2 105 LILY LAKE 9050 13.0 9.5 137 21.5 17.7 122 MONTE CRISTO 8960 34.8 26.9 130 32.7 29.9 110 SALT RIVER SUMMIT 7600 16.0 11.5 141 20.7 19.2 108 TRIAL LAKE 9960 23.0 24.4 95 25.9 27.9 93 ----- ----- Basin wide percent of average 128 107 ----------------------------------------------------------------------------- -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.