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: SEPTEMBER 19 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .3 .0 * 51.6 33.3 155 COTTONWOOD CREEK 7600 .3 .0 * 52.3 36.9 142 GRANITE CREEK 6770 .2 .0 * 45.5 37.3 122 GRASSY LAKE 7265 .1 .0 * 76.2 54.9 139 GROS VENTRE SUMMIT 8775 .1 .0 * 34.8 25.2 138 LEWIS LAKE DIVIDE 7860 .0 .0 100* 76.2 55.9 136 PHILLIPS BENCH 8200 .1 .0 * 65.4 44.0 149 SALT RIVER SUMMIT 7600 -M .0 * 38.8 26.8 145 SNAKE RIVER STATION 6920 .0 .0 100* 53.6 38.5 139 SPRING CREEK DIVIDE 9000 .0 .0 100* 46.4 39.5 117 THUMB DIVIDE 7980 .0 .0 100* 49.0 31.2 157 TOGWOTEE PASS 9580 .2 .0 * 56.5 42.0 135 TWO OCEAN PLATEAU 9360 .2 .0 * 63.4 45.9 138 WILLOW CREEK 8450 .3 .0 * 70.9 47.3 150 ----- ----- Basin wide percent of average * 140 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .1 0* 44.9 32.3 139 BLACK BEAR 7950 .0 .1 0* 88.9 60.5 147 CANYON 7940 .0 .0 100* 37.1 26.8 138 FISHER CREEK 9100 .2 .1 200* 74.5 57.8 129 MADISON PLATEAU 7750 .1 .1 100* 57.3 41.7 137 NORTHEAST ENTRANCE 7350 .2 .0 * 36.4 24.3 150 PARKER PEAK 9400 .3 .2 150* 38.9 30.8 126 SYLVAN LAKE 8420 .2 .2 100* 51.3 36.2 142 THUMB DIVIDE 7980 .0 .0 100* 49.0 31.2 157 TWO OCEAN PLATEAU 9360 .2 .0 * 63.4 45.9 138 WHISKEY CREEK 6800 .2 .0 * 45.1 35.7 126 WHITE MILL 8700 .2 .1 200* 59.2 46.0 129 WOLVERINE 7650 .0 .0 100* 28.8 25.9 111 ----- ----- Basin wide percent of average 111* 136 WIND RIVER BURROUGHS CREEK 8750 .1 .0 * 40.8 28.9 141 CHRISTINA LAKE 9980 -M .1 * -M 30.3 * COLD SPRINGS 9630 .3 .0 * 27.4 22.3 123 HOBBS PARK 10100 .2 .1 200* 27.4 27.7 99 LITTLE WARM 9620 .0 .0 100* 36.8 26.2 140 SOUTH PASS 9040 .1 .1 100* 34.7 30.3 115 ST. LAWRENCE ALT 8620 .0 .0 100* 24.8 20.3 122 TOGWOTEE PASS 9580 .2 .0 * 56.5 42.0 135 TOWNSEND CREEK 8700 .0 .0 100* 26.2 24.7 106 ----- ----- Basin wide percent of average 150* 123 BIGHORN BASIN BALD MTN. 9375 .4 .1 400* 37.2 32.3 115 BEAR TRAP MEADOW 7900 .1 .0 * 24.9 20.0 125 BLACKWATER 9780 .0 .2 0* 48.8 36.1 135 BONE SPRINGS DIV 9350 .3 .2 150* 33.9 31.1 109 EVENING STAR 9200 .0 .1 0* 60.3 43.5 139 GRAVE SPRINGS 8550 .1 -M * 25.2 23.4 108 KIRWIN 9550 .0 .1 0* 33.8 25.3 134 LOST CREEK 8080 -M .1 * -M 25.5 * MARQUETTE 8760 .4 .1 400* 30.4 25.2 121 MIDDLE POWDER 7760 .3 .1 300* 32.1 25.1 128 OWL CREEK 8975 .1 .1 100* 19.0 16.6 114 POWDER RIVER PASS 9480 .5 .1 500* 35.6 24.9 143 SHELL CREEK 9580 .3 .2 150* 28.9 27.6 105 SYLVAN LAKE 8420 .2 .2 100* 51.3 36.2 142 SYLVAN ROAD 8120 .1 .1 100* 40.3 31.4 128 TIMBER CREEK 7950 -M .0 * 22.5 20.4 110 YOUNTS PEAK 8350 .0 .1 0* 43.8 30.4 144 ----- ----- Basin wide percent of average 153* 126 SHOSHONE RIVER BLACKWATER 9780 .0 .2 0* 48.8 36.1 135 EVENING STAR 9200 .0 .1 0* 60.3 43.5 139 KIRWIN 9550 .0 .1 0* 33.8 25.3 134 MARQUETTE 8760 .4 .1 400* 30.4 25.2 121 SYLVAN LAKE 8420 .2 .2 100* 51.3 36.2 142 SYLVAN ROAD 8120 .1 .1 100* 40.3 31.4 128 YOUNTS PEAK 8350 .0 .1 0* 43.8 30.4 144 ----- ----- Basin wide percent of average 78* 135 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 .0 * 24.9 20.0 125 BONE SPRINGS DIV 9350 .3 .2 150* 33.9 31.1 109 BURGESS JUNCTION 7880 .2 .1 200* 29.8 24.4 122 CLOUD PEAK RESERVOIR 9860 .1 .1 100* 36.6 29.3 125 DOME LAKE 8880 .2 .1 200* 32.7 27.2 120 GRAVE SPRINGS 8550 .1 -M * 25.2 23.4 108 HANSEN SAWMILL 8760 .1 .0 * 26.9 20.1 134 LOST CREEK 8080 -M .1 * -M 25.5 * MIDDLE POWDER 7760 .3 .1 300* 32.1 25.1 128 POWDER RIVER PASS 9480 .5 .1 500* 35.6 24.9 143 SUCKER CREEK 8880 .4 .1 400* 32.9 28.2 117 TIE CREEK 6870 .1 -M * 34.6 23.5 147 ----- ----- Basin wide percent of average 250* 125 BELLE FOURCHE BLIND PARK 6890 .4 .0 * 31.9 27.8 115 NORTH RAPID CREEK 6130 .6 -M * 37.6 -M * WARREN PEAK 6520 .2 .0 * 34.7 21.4 162 ----- ----- Basin wide percent of average * 135 UPPER N. PLATTE RIVER COLUMBINE 9400 .1 .0 * -M 36.6 * DIVIDE PEAK 8800 .0 .0 100* 37.6 36.7 102 ELK RIVER 8700 .0 .0 100* -M 30.3 * JOE WRIGHT 10120 .0 .0 100* 47.5 44.7 106 NORTH FRENCH CREEK 10100 .1 .0 * 47.5 39.4 121 OLD BATTLE 10000 .1 .1 100* 56.6 47.1 120 SOUTH BRUSH CREEK 8400 .2 .0 * 30.7 30.4 101 TOWER 10500 .0 .0 100* 73.5 57.6 128 WEBBER SPRINGS 9200 .0 .0 100* 49.8 40.5 123 WILLOW CREEK PASS 9540 .0 .0 100* 30.6 25.5 120 ----- ----- Basin wide percent of average 100* 116 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .1 0* 44.8 33.4 134 CASPER MTN. 7900 .1 .0 * 32.9 29.2 113 CHRISTINA LAKE 9980 -M .1 * -M 30.3 * DEADMAN HILL 10220 .0 .0 100* 34.0 32.0 106 LAPRELE CREEK 8320 .0 .0 100* 27.0 24.7 109 RENO HILL 8400 .1 .0 * -M 30.2 * ROACH 9700 .0 .0 100* 37.4 37.0 101 SAND LAKE 10080 .1 .0 * 46.8 34.7 135 SOUTH PASS 9040 .1 .1 100* 34.7 30.3 115 WINDY PEAK 7840 .3 .0 * 24.0 21.5 112 ----- ----- Basin wide percent of average 50* 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * 21.3 25.4 84 DIVIDE PEAK 8800 .0 .0 100* 37.6 36.7 102 OLD BATTLE 10000 .1 .1 100* 56.6 47.1 120 SANDSTONE RS 8150 .0 .0 100* 33.9 32.4 105 WHISKEY PARK 8950 .0 .0 100* -M 44.0 * ----- ----- Basin wide percent of average 100* 106 UPPER GREEN RIVER BIG SANDY OPENING 9100 .1 .0 * 25.9 25.8 100 BLIND BULL SUM 8650 1.2 .0 * 50.0 34.4 145 EAST RIM DIVIDE 7930 .2 .0 * 29.6 24.0 123 ELKHART PARK G.S. 9400 .0 .0 100* 33.4 25.3 132 GROS VENTRE SUMMIT 8775 .1 .0 * 34.8 25.2 138 KENDALL R.S. 7740 .1 .0 * 36.4 24.6 148 LOOMIS PARK 8240 .1 .0 * 44.3 29.8 149 NEW FORK LAKE 8340 .0 .0 100* 25.8 22.9 113 SNIDER BASIN 8250 .1 .0 * 27.2 24.0 113 SPRING CREEK DIVIDE 9000 .0 .0 100* 46.4 39.5 117 TRIPLE PEAK 8500 .1 .0 * 55.9 46.3 121 ----- ----- Basin wide percent of average * 127 LOWER GREEN RIVER HAMS FORK 7840 .6 .0 * 25.5 21.2 120 HEWINTA 9500 .2 .0 * 28.3 25.3 112 HICKERSON PARK 9150 .0 .0 100* 20.5 21.3 96 HOLE-IN-ROCK 9150 .0 .0 100* 21.8 21.3 102 INDIAN CREEK 9425 -M .0 * 44.5 38.4 116 KELLEY R.S. 8180 .8 .0 * -M 29.7 * STEEL CREEK PARK 10100 .0 .1 0* 29.4 29.7 99 ----- ----- Basin wide percent of average 0* 108 UPPER BEAR RIVER BUG LAKE 7950 .1 .1 100* 44.0 29.3 150 HAYDEN FORK 9400 .0 .0 100* 42.2 32.8 129 KELLEY R.S. 8180 .8 .0 * -M 29.7 * LILY LAKE 9050 .5 .1 500* 32.6 27.2 120 MONTE CRISTO 8960 .8 .1 800* 51.9 39.6 131 SALT RIVER SUMMIT 7600 -M .0 * 38.8 26.8 145 TRIAL LAKE 9960 .5 .1 500* 50.0 38.9 129 ----- ----- Basin wide percent of average 475* 133 ----------------------------------------------------------------------------- -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.