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 TUESDAY: APRIL 27 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 19.4 12.1 161 28.9 24.9 117 COTTONWOOD CREEK 7600 25.0 20.9 120 31.2 27.9 112 GRANITE CREEK 6770 19.4 14.2 136 24.4 26.5 93 GRASSY LAKE 7265 43.0 34.9 124 44.8 41.4 108 GROS VENTRE SUMMIT 8775 16.9 14.5 117 17.4 17.9 97 LEWIS LAKE DIVIDE 7860 40.8 35.0 117 42.8 42.2 102 PHILLIPS BENCH 8200 35.8 29.9 120 34.3 33.3 103 SALT RIVER SUMMIT 7600 16.2 11.6 139 20.5 19.0 108 SNAKE RIVER STATION 6920 18.4 17.0 109 27.9 29.2 96 SPRING CREEK DIVIDE 9000 34.4 29.7 117 31.9 30.5 105 THUMB DIVIDE 7980 22.5 15.7 144 24.7 23.4 106 TOGWOTEE PASS 9580 -M 28.0 * 31.7 31.7 101 TWO OCEAN PLATEAU 9360 40.7 27.4 149 34.3 34.3 100 WILLOW CREEK 8450 33.8 31.9 106 41.9 35.8 118 ----- ----- Basin wide percent of average 125 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.9 25.9 104 26.2 20.9 125 BLACK BEAR 7950 -M 39.9 * 49.2 45.9 107 CANYON 7940 16.9 11.6 145 20.7 16.2 129 FISHER CREEK 9100 37.2 38.7 97 39.8 41.7 96 MADISON PLATEAU 7750 -M 24.4 * 34.4 29.5 117 NORTHEAST ENTRANCE 7350 8.5 6.8 126 15.2 13.7 111 PARKER PEAK 9400 27.4 23.7 117 -M 17.9 * SYLVAN LAKE 8420 27.5 23.9 116 30.7 22.0 140 THUMB DIVIDE 7980 22.5 15.7 144 24.7 23.4 106 TWO OCEAN PLATEAU 9360 40.7 27.4 149 34.3 34.3 100 WHISKEY CREEK 6800 21.7 16.0 136 26.2 24.7 107 WHITE MILL 8700 29.7 26.2 114 26.9 32.2 84 WOLVERINE 7650 11.0 9.1 120 14.1 15.0 95 ----- ----- Basin wide percent of average 120 108 WIND RIVER BURROUGHS CREEK 8750 18.2 13.6 134 19.9 19.2 105 COLD SPRINGS 9630 14.7 7.3 202 18.2 12.9 143 DEER PARK 9700 25.2 -M * -M -M * HOBBS PARK 10100 27.4 17.7 155 24.7 16.9 147 LITTLE WARM 9620 17.5 11.2 157 19.9 16.0 125 SOUTH PASS 9040 24.9 18.0 139 26.4 20.2 131 ST. LAWRENCE ALT 8620 13.7 6.0 233 -M 12.2 * TOGWOTEE PASS 9580 -M 28.0 * 31.7 31.7 101 TOWNSEND CREEK 8700 -M 9.9 * -M 15.2 * ----- ----- Basin wide percent of average 158 121 BIGHORN BASIN BALD MTN. 9375 23.0 23.7 98 21.4 20.4 105 BEAR TRAP MEADOW 7900 2.8 5.0 58 13.0 10.4 127 BLACKWATER 9780 34.4 25.5 135 28.0 20.4 138 BONE SPRINGS DIV 9350 21.2 18.4 116 21.2 17.9 119 EVENING STAR 9200 36.2 30.5 119 37.9 25.5 149 GRAVE SPRINGS 8550 11.6 11.5 102 15.5 12.1 128 KIRWIN 9550 15.5 11.6 134 17.7 13.0 137 MARQUETTE 8760 15.5 8.7 179 16.5 13.0 127 MIDDLE POWDER 7760 18.5 14.6 127 20.9 14.5 145 OWL CREEK 8975 9.0 3.8 235 9.7 8.0 123 POWDER RIVER PASS 9480 13.5 10.9 125 18.2 14.4 127 SHELL CREEK 9580 18.9 16.9 112 17.9 15.6 115 SYLVAN LAKE 8420 27.5 23.9 116 30.7 22.0 140 SYLVAN ROAD 8120 -M 8.7 * -M 18.4 * TIMBER CREEK 7950 9.5 6.3 152 12.6 9.7 130 YOUNTS PEAK 8350 21.7 18.4 118 20.7 19.0 109 ----- ----- Basin wide percent of average 122 129 SHOSHONE RIVER BLACKWATER 9780 34.4 25.5 135 28.0 20.4 138 EVENING STAR 9200 36.2 30.5 119 37.9 25.5 149 KIRWIN 9550 15.5 11.6 134 17.7 13.0 137 MARQUETTE 8760 15.5 8.7 179 16.5 13.0 127 SYLVAN LAKE 8420 27.5 23.9 116 30.7 22.0 140 SYLVAN ROAD 8120 -M 8.7 * -M 18.4 * YOUNTS PEAK 8350 21.7 18.4 118 20.7 19.0 109 ----- ----- Basin wide percent of average 128 135 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.8 5.0 58 13.0 10.4 127 BIG GOOSE 7990 11.1 -M * 16.0 -M * BONE SPRINGS DIV 9350 21.2 18.4 116 21.2 17.9 119 BURGESS JUNCTION 7880 12.5 13.5 94 15.4 14.1 109 CLOUD PEAK RESERVOIR 9860 22.0 17.5 126 20.9 16.7 126 DOME LAKE 8880 -M 15.0 * 15.9 16.0 99 GRAVE SPRINGS 8550 11.6 11.5 102 15.5 12.1 128 HANSEN SAWMILL 8760 6.8 7.1 96 13.0 10.0 130 MIDDLE POWDER 7760 18.5 14.6 127 20.9 14.5 145 POWDER RIVER PASS 9480 13.5 10.9 125 18.2 14.4 127 SUCKER CREEK 8880 15.1 13.7 111 18.7 16.2 117 TIE CREEK 6870 -M -M * -M 13.5 * ----- ----- Basin wide percent of average 111 122 BELLE FOURCHE BLIND PARK 6890 2.9 10.1 29 17.9 13.4 135 NORTH RAPID CREEK 6130 4.1 -M * 16.2 -M * WARREN PEAK 6520 10.2 10.1 101 13.2 10.0 133 ----- ----- Basin wide percent of average 65 134 UPPER N. PLATTE RIVER COLUMBINE 9400 18.5 22.7 82 26.9 27.7 98 DIVIDE PEAK 8800 22.5 20.0 113 29.4 26.9 110 ELK RIVER 8700 16.4 17.4 95 26.2 21.9 121 JOE WRIGHT 10120 23.7 24.7 96 30.5 29.7 104 NORTH FRENCH CREEK 10100 38.2 29.2 131 36.5 27.5 133 OLD BATTLE 10000 36.5 37.8 97 42.8 35.0 123 SOUTH BRUSH CREEK 8400 10.2 11.4 91 22.9 20.2 114 TOWER 10500 54.3 50.7 108 45.3 42.3 108 WEBBER SPRINGS 9200 22.2 26.7 84 31.0 29.9 104 WILLOW CREEK PASS 9540 15.0 13.5 112 14.2 15.1 95 ----- ----- Basin wide percent of average 102 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.5 29.0 82 28.9 23.4 125 CASPER MTN. 7900 15.5 18.2 86 21.0 18.2 116 DEADMAN HILL 10220 20.4 18.9 108 21.5 20.7 105 DEER PARK 9700 25.2 -M * -M -M * LAPRELE CREEK 8320 .0 7.3 0 19.0 14.5 132 RENO HILL 8400 18.2 14.0 130 24.2 22.0 110 ROACH 9700 19.2 18.2 105 24.7 25.2 99 SAND LAKE 10080 44.9 36.9 122 36.2 24.4 149 SOUTH PASS 9040 24.9 18.0 139 26.4 20.2 131 WINDY PEAK 7840 8.6 8.4 104 16.5 12.0 139 ----- ----- Basin wide percent of average 104 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.8 6.5 122 21.4 18.2 119 DIVIDE PEAK 8800 22.5 20.0 113 29.4 26.9 110 OLD BATTLE 10000 36.5 37.8 97 42.8 35.0 123 SANDSTONE RS 8150 10.7 11.2 96 24.4 22.5 109 WHISKEY PARK 8950 30.9 29.9 104 34.8 33.3 105 ----- ----- Basin wide percent of average 104 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.0 14.4 119 17.7 18.4 97 BLIND BULL SUM 8650 30.7 24.9 124 24.2 26.7 91 EAST RIM DIVIDE 7930 14.7 15.0 99 15.6 17.2 92 ELKHART PARK G.S. 9400 15.5 14.4 108 17.0 18.0 95 GROS VENTRE SUMMIT 8775 16.9 14.5 117 17.4 17.9 97 KENDALL R.S. 7740 14.1 11.4 125 18.2 17.4 105 LOOMIS PARK 8240 -M 15.6 * 22.2 21.2 105 NEW FORK LAKE 8340 12.9 9.5 135 14.0 16.2 86 SNIDER BASIN 8250 19.9 13.7 146 20.0 17.0 118 SPRING CREEK DIVIDE 9000 34.4 29.7 117 31.9 30.5 105 TRIPLE PEAK 8500 30.4 25.5 120 33.3 34.7 96 ----- ----- Basin wide percent of average 120 99 LOWER GREEN RIVER HAMS FORK 7840 12.7 5.8 219 15.2 15.0 102 HEWINTA 9500 12.4 6.3 196 17.0 16.0 107 HICKERSON PARK 9150 6.0 3.9 152 13.0 12.0 109 HOLE-IN-ROCK 9150 9.2 3.3 279 13.5 12.0 113 INDIAN CREEK 9425 35.7 29.4 122 30.2 28.9 105 KELLEY R.S. 8180 17.5 15.7 112 21.7 21.2 103 STEEL CREEK PARK 10100 18.4 18.7 98 20.2 15.7 129 ----- ----- Basin wide percent of average 135 109 UPPER BEAR RIVER BUG LAKE 7950 24.0 17.0 142 24.5 22.4 110 HAYDEN FORK 9400 12.7 7.8 165 23.4 22.5 105 KELLEY R.S. 8180 17.5 15.7 112 21.7 21.2 103 LILY LAKE 9050 12.5 9.9 127 20.9 17.7 119 MONTE CRISTO 8960 33.8 27.0 126 31.7 29.7 107 SALT RIVER SUMMIT 7600 16.2 11.6 139 20.5 19.0 108 TRIAL LAKE 9960 22.4 24.5 92 25.4 27.9 92 ----- ----- Basin wide percent of average 123 106 ----------------------------------------------------------------------------- -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.