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 11 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 100* 32.7 32.9 99 COTTONWOOD CREEK 7600 .0 .0 100* 38.3 36.4 105 GRANITE CREEK 6770 .1 .0 * 31.8 36.7 87 GRASSY LAKE 7265 .1 .0 * 53.0 54.2 98 GROS VENTRE SUMMIT 8775 .1 .0 * 27.4 24.8 110 LEWIS LAKE DIVIDE 7860 .0 .0 100* 46.9 55.1 85 PHILLIPS BENCH 8200 .0 .0 100* 39.1 43.4 90 SALT RIVER SUMMIT 7600 .1 .0 * 32.4 26.3 123 SNAKE RIVER STATION 6920 .1 .0 * 37.5 38.0 99 SPRING CREEK DIVIDE 9000 .0 .0 100* 34.8 39.0 89 THUMB DIVIDE 7980 .1 .0 * 31.4 30.8 102 TOGWOTEE PASS 9580 .1 .0 * 38.2 41.4 92 TWO OCEAN PLATEAU 9360 .2 .0 * 43.4 45.3 96 WILLOW CREEK 8450 .0 .0 100* 50.0 46.7 107 ----- ----- Basin wide percent of average * 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .0 100* 29.2 31.8 92 BLACK BEAR 7950 -M .0 * -M 59.8 * CANYON 7940 .0 .0 100* 25.4 26.2 97 FISHER CREEK 9100 .1 .0 * 46.0 57.1 81 MADISON PLATEAU 7750 .0 .0 100* 39.5 41.0 96 NORTHEAST ENTRANCE 7350 -M .0 * -M 23.7 * PARKER PEAK 9400 .4 .0 * 30.5 30.1 101 SYLVAN LAKE 8420 .1 .0 * 36.2 35.4 102 THUMB DIVIDE 7980 .1 .0 * 31.4 30.8 102 TWO OCEAN PLATEAU 9360 .2 .0 * 43.4 45.3 96 WHISKEY CREEK 6800 .0 .0 100* 34.3 35.1 98 WHITE MILL 8700 .0 .0 100* 35.5 45.3 78 WOLVERINE 7650 .1 .0 * 20.9 25.3 83 ----- ----- Basin wide percent of average * 92 WIND RIVER BURROUGHS CREEK 8750 .1 .0 * 31.4 28.3 111 COLD SPRINGS 9630 .0 .0 100* 25.0 21.7 115 DEER PARK 9700 .0 -M * 38.2 -M * HOBBS PARK 10100 .0 .0 100* 30.7 27.2 113 LITTLE WARM 9620 .1 .0 * 25.8 25.6 101 SOUTH PASS 9040 .0 .0 100* 33.0 29.8 111 ST. LAWRENCE ALT 8620 .0 .0 100* 23.1 19.9 116 TOGWOTEE PASS 9580 .1 .0 * 38.2 41.4 92 TOWNSEND CREEK 8700 .0 .0 100* 28.6 24.2 118 ----- ----- Basin wide percent of average * 108 BIGHORN BASIN BALD MTN. 9375 .0 .0 100* 32.7 31.6 103 BEAR TRAP MEADOW 7900 .0 .0 100* 20.8 19.5 107 BLACKWATER 9780 .0 .0 100* 34.5 35.2 98 BONE SPRINGS DIV 9350 .1 .0 * 30.1 30.4 99 EVENING STAR 9200 .1 .0 * 41.6 42.5 98 GRAVE SPRINGS 8550 .1 -M * 24.0 22.8 105 KIRWIN 9550 .1 .0 * 28.4 24.5 116 MARQUETTE 8760 .1 .0 * 29.4 24.6 120 MIDDLE POWDER 7760 .1 .0 * 26.3 24.6 107 OWL CREEK 8975 .1 .0 * 18.6 16.1 116 POWDER RIVER PASS 9480 .1 .0 * 25.5 24.4 105 SHELL CREEK 9580 .0 .0 100* 24.1 27.0 89 SYLVAN LAKE 8420 .1 .0 * 36.2 35.4 102 SYLVAN ROAD 8120 .1 .0 * 25.7 30.7 84 TIMBER CREEK 7950 .1 .0 * 21.3 19.9 107 YOUNTS PEAK 8350 .0 .0 100* 28.6 29.7 96 ----- ----- Basin wide percent of average * 102 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 34.5 35.2 98 EVENING STAR 9200 .1 .0 * 41.6 42.5 98 KIRWIN 9550 .1 .0 * 28.4 24.5 116 MARQUETTE 8760 .1 .0 * 29.4 24.6 120 SYLVAN LAKE 8420 .1 .0 * 36.2 35.4 102 SYLVAN ROAD 8120 .1 .0 * 25.7 30.7 84 YOUNTS PEAK 8350 .0 .0 100* 28.6 29.7 96 ----- ----- Basin wide percent of average * 101 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .0 100* 20.8 19.5 107 BONE SPRINGS DIV 9350 .1 .0 * 30.1 30.4 99 BURGESS JUNCTION 7880 .0 .0 100* 24.0 23.8 101 CLOUD PEAK RESERVOIR 9860 .0 .0 100* -M 28.7 * DOME LAKE 8880 .0 .0 100* -M 26.5 * GRAVE SPRINGS 8550 .1 -M * 24.0 22.8 105 HANSEN SAWMILL 8760 .0 .0 100* 23.4 19.6 119 MIDDLE POWDER 7760 .1 .0 * 26.3 24.6 107 POWDER RIVER PASS 9480 .1 .0 * 25.5 24.4 105 SUCKER CREEK 8880 .1 .0 * 27.5 27.6 100 TIE CREEK 6870 .0 -M * -M 22.9 * ----- ----- Basin wide percent of average * 105 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 28.3 27.3 104 NORTH RAPID CREEK 6130 .0 -M * 34.5 -M * WARREN PEAK 6520 .0 .0 100* 24.7 21.0 118 ----- ----- Basin wide percent of average * 110 UPPER N. PLATTE RIVER COLUMBINE 9400 .0 .0 100* -M 36.3 * DIVIDE PEAK 8800 -M .0 * -M 36.0 * ELK RIVER 8700 .0 .0 100* 32.4 29.8 109 JOE WRIGHT 10120 .0 .0 100* 41.9 43.9 95 NORTH FRENCH CREEK 10100 .1 .0 * 45.9 38.8 118 OLD BATTLE 10000 .0 .0 100* 50.5 46.4 109 SOUTH BRUSH CREEK 8400 .1 .0 * 23.6 29.8 79 TOWER 10500 .0 .0 100* 58.6 56.9 103 WEBBER SPRINGS 9200 .0 .0 100* 38.3 39.7 96 WILLOW CREEK PASS 9540 .0 .0 100* 22.6 25.0 90 ----- ----- Basin wide percent of average * 101 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .1 .0 * 29.0 33.0 88 CASPER MTN. 7900 .1 .0 * 21.8 28.8 76 DEADMAN HILL 10220 .0 .0 100* 26.7 31.5 85 DEER PARK 9700 .0 -M * 38.2 -M * LAPRELE CREEK 8320 .0 .0 100* 22.0 24.3 91 RENO HILL 8400 .0 .0 100* 20.9 29.9 70 ROACH 9700 .0 .0 100* 29.0 36.4 80 SAND LAKE 10080 .0 .0 100* 40.3 34.1 118 SOUTH PASS 9040 .0 .0 100* 33.0 29.8 111 WINDY PEAK 7840 .0 .0 100* 18.3 21.2 86 ----- ----- Basin wide percent of average * 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 24.2 24.8 98 DIVIDE PEAK 8800 -M .0 * -M 36.0 * OLD BATTLE 10000 .0 .0 100* 50.5 46.4 109 SANDSTONE RS 8150 .5 .0 * 29.9 31.7 94 WHISKEY PARK 8950 .0 .0 100* 44.5 43.5 102 ----- ----- Basin wide percent of average * 102 UPPER GREEN RIVER BIG SANDY OPENING 9100 .1 .0 * 27.0 25.3 107 BLIND BULL SUM 8650 .0 .0 100* 31.5 34.0 93 EAST RIM DIVIDE 7930 .1 .0 * 22.5 23.7 95 ELKHART PARK G.S. 9400 .1 .0 * 27.1 24.9 109 GROS VENTRE SUMMIT 8775 .1 .0 * 27.4 24.8 110 KENDALL R.S. 7740 .0 .0 100* 24.8 24.2 102 LOOMIS PARK 8240 .0 .0 100* 30.2 29.3 103 NEW FORK LAKE 8340 .0 .0 100* 23.7 22.6 105 SNIDER BASIN 8250 .0 .0 100* 20.9 23.7 88 SPRING CREEK DIVIDE 9000 .0 .0 100* 34.8 39.0 89 TRIPLE PEAK 8500 .1 .0 * 35.6 45.7 78 ----- ----- Basin wide percent of average * 96 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 21.8 20.8 105 HEWINTA 9500 .1 .0 * 24.7 24.8 100 HICKERSON PARK 9150 .0 .0 100* 27.3 21.0 130 HOLE-IN-ROCK 9150 .0 .0 100* 26.2 21.0 125 INDIAN CREEK 9425 .2 .0 * 32.8 37.9 87 KELLEY R.S. 8180 .0 .0 100* 29.9 29.2 102 STEEL CREEK PARK 10100 .0 .0 100* 34.1 29.1 117 ----- ----- Basin wide percent of average * 107 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 34.6 28.8 120 HAYDEN FORK 9400 -M .0 * 34.4 32.2 107 KELLEY R.S. 8180 .0 .0 100* 29.9 29.2 102 LILY LAKE 9050 .2 .0 * 32.8 26.7 123 MONTE CRISTO 8960 .2 .0 * 44.1 39.0 113 SALT RIVER SUMMIT 7600 .1 .0 * 32.4 26.3 123 TRIAL LAKE 9960 .4 .0 * 40.4 38.3 105 ----- ----- Basin wide percent of average * 113 ----------------------------------------------------------------------------- -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.