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 17 , 1999 ----------------------------------------------------------------------------- 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* 37.4 33.4 113 COTTONWOOD CREEK 7600 .2 .0 * 44.9 36.9 122 GRANITE CREEK 6770 .2 .0 * 34.5 37.3 93 GRASSY LAKE 7265 .0 .0 100* 60.5 54.9 111 GROS VENTRE SUMMIT 8775 .0 .0 100* 26.2 25.3 104 LEWIS LAKE DIVIDE 7860 .0 .0 100* 54.9 55.8 99 PHILLIPS BENCH 8200 .2 .0 * 45.4 44.0 104 SALT RIVER SUMMIT 7600 .2 .0 * 31.0 26.8 117 SNAKE RIVER STATION 6920 .0 .0 100* 39.9 38.5 104 SPRING CREEK DIVIDE 9000 .5 .0 * 43.4 39.5 110 THUMB DIVIDE 7980 .0 .0 100* 35.5 31.3 114 TOGWOTEE PASS 9580 .0 .0 100* 41.5 42.0 100 TWO OCEAN PLATEAU 9360 .2 .0 * 47.3 45.9 104 WILLOW CREEK 8450 .0 .0 100* 58.7 47.3 125 ----- ----- Basin wide percent of average * 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .3 .2 200* 37.0 32.3 115 BLACK BEAR 7950 .0 .2 0* 71.4 60.5 119 CANYON 7940 .2 .2 100* 30.4 26.8 114 FISHER CREEK 9100 .2 .2 100* 55.5 57.8 97 MADISON PLATEAU 7750 .0 .2 0* 47.0 41.7 113 NORTHEAST ENTRANCE 7350 .2 .0 * 25.8 24.3 107 PARKER PEAK 9400 .2 .3 50* -M 30.7 * SYLVAN LAKE 8420 .2 .2 100* 44.2 36.0 123 THUMB DIVIDE 7980 .0 .0 100* 35.5 31.3 114 TWO OCEAN PLATEAU 9360 .2 .0 * 47.3 45.9 104 WHISKEY CREEK 6800 .0 .0 100* 39.2 35.7 110 WHITE MILL 8700 .2 .2 100* 39.0 46.0 85 WOLVERINE 7650 .0 .0 100* 22.5 25.9 87 ----- ----- Basin wide percent of average 78* 107 WIND RIVER BURROUGHS CREEK 8750 .0 .2 0* 31.7 28.9 110 COLD SPRINGS 9630 .0 .2 0* 29.9 22.3 135 DEER PARK 9700 12.5 -M * 42.3 -M * HOBBS PARK 10100 -M .2 * -M 27.7 * LITTLE WARM 9620 .0 .2 0* 31.8 26.2 122 SOUTH PASS 9040 -M .2 * -M 30.4 * ST. LAWRENCE ALT 8620 .0 .0 100* -M 20.4 * TOGWOTEE PASS 9580 .0 .0 100* 41.5 42.0 100 TOWNSEND CREEK 8700 .2 .0 * 31.5 24.7 128 ----- ----- Basin wide percent of average 0* 116 BIGHORN BASIN BALD MTN. 9375 .2 .2 100* 32.4 32.2 101 BEAR TRAP MEADOW 7900 -M .2 * -M 20.0 * BLACKWATER 9780 .0 .2 -0* 39.9 36.0 111 BONE SPRINGS DIV 9350 -M .3 * 33.5 31.0 108 EVENING STAR 9200 .0 .2 0* 51.2 43.4 119 GRAVE SPRINGS 8550 .2 .2 100* 24.0 23.4 104 KIRWIN 9550 -M .2 * 29.5 25.2 118 MARQUETTE 8760 .0 .2 0* 31.0 25.2 124 MIDDLE POWDER 7760 .0 .2 0* 32.0 25.0 129 OWL CREEK 8975 .0 .2 0* 23.3 16.5 141 POWDER RIVER PASS 9480 .0 .2 0* 30.0 24.9 121 SHELL CREEK 9580 .0 .2 0* 30.0 27.5 109 SYLVAN LAKE 8420 .2 .2 100* 44.2 36.0 123 SYLVAN ROAD 8120 .0 .2 0* 30.4 31.4 97 TIMBER CREEK 7950 .3 .0 * 25.5 20.4 126 YOUNTS PEAK 8350 .0 .2 0* 33.0 30.4 109 ----- ----- Basin wide percent of average 25* 115 SHOSHONE RIVER BLACKWATER 9780 .0 .2 -0* 39.9 36.0 111 EVENING STAR 9200 .0 .2 0* 51.2 43.4 119 KIRWIN 9550 -M .2 * 29.5 25.2 118 MARQUETTE 8760 .0 .2 0* 31.0 25.2 124 SYLVAN LAKE 8420 .2 .2 100* 44.2 36.0 123 SYLVAN ROAD 8120 .0 .2 0* 30.4 31.4 97 YOUNTS PEAK 8350 .0 .2 0* 33.0 30.4 109 ----- ----- Basin wide percent of average 17* 114 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M .2 * -M 20.0 * BIG GOOSE 7990 .0 -M * 25.3 -M * BONE SPRINGS DIV 9350 -M .3 * 33.5 31.0 108 BURGESS JUNCTION 7880 .3 .2 200* 24.3 24.4 100 CLOUD PEAK RESERVOIR 9860 .2 .2 100* 32.9 29.3 113 DOME LAKE 8880 .3 .2 200* 24.2 27.2 89 GRAVE SPRINGS 8550 .2 .2 100* 24.0 23.4 104 HANSEN SAWMILL 8760 .3 .2 200* 23.3 20.0 117 MIDDLE POWDER 7760 .0 .2 0* 32.0 25.0 129 POWDER RIVER PASS 9480 .0 .2 0* 30.0 24.9 121 SUCKER CREEK 8880 .2 .2 100* 30.9 28.2 110 TIE CREEK 6870 .0 -M * 27.8 23.5 119 ----- ----- Basin wide percent of average 113* 111 BELLE FOURCHE BLIND PARK 6890 .0 .2 -0* 32.7 27.8 118 NORTH RAPID CREEK 6130 .0 -M * 30.0 -M * WARREN PEAK 6520 .2 .2 100* 31.0 21.5 145 ----- ----- Basin wide percent of average 50* 130 UPPER N. PLATTE RIVER COLUMBINE 9400 .3 .0 * 36.4 36.7 100 DIVIDE PEAK 8800 .2 .0 * 40.7 36.7 111 ELK RIVER 8700 .0 .0 100* 38.5 30.4 127 JOE WRIGHT 10120 .3 .0 * 43.4 44.7 98 NORTH FRENCH CREEK 10100 .2 .0 * 44.4 39.4 113 OLD BATTLE 10000 .0 .2 -0* 58.2 47.0 124 SOUTH BRUSH CREEK 8400 .0 .0 100* 33.8 30.4 112 TOWER 10500 .5 .0 * 58.5 57.5 102 WEBBER SPRINGS 9200 .2 .0 * 43.3 40.4 108 WILLOW CREEK PASS 9540 .0 .0 100* 25.4 25.5 100 ----- ----- Basin wide percent of average 0* 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .2 .2 100* 41.3 33.5 124 CASPER MTN. 7900 .3 .0 * 30.8 29.3 106 DEADMAN HILL 10220 .0 .0 100* 31.2 32.0 98 DEER PARK 9700 12.5 -M * 42.3 -M * LAPRELE CREEK 8320 .0 .0 100* 28.8 24.8 117 RENO HILL 8400 .0 .0 100* 32.7 30.3 108 ROACH 9700 .0 .0 100* 33.5 37.0 91 SAND LAKE 10080 .0 .0 100* 48.0 34.7 139 SOUTH PASS 9040 -M .2 * -M 30.4 * WINDY PEAK 7840 .0 .0 100* 26.4 21.5 123 ----- ----- Basin wide percent of average 100* 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 27.2 25.4 108 DIVIDE PEAK 8800 .2 .0 * 40.7 36.7 111 OLD BATTLE 10000 .0 .2 -0* 58.2 47.0 124 SANDSTONE RS 8150 .2 .0 * 32.8 32.4 102 WHISKEY PARK 8950 .0 .0 100* 45.4 44.0 103 ----- ----- Basin wide percent of average 0* 111 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 .0 100* 26.4 25.8 103 BLIND BULL SUM 8650 .4 .0 * 35.9 34.5 105 EAST RIM DIVIDE 7930 .4 .0 * 23.5 24.0 98 ELKHART PARK G.S. 9400 .4 .0 * 28.2 25.4 112 GROS VENTRE SUMMIT 8775 .0 .0 100* 26.2 25.3 104 KENDALL R.S. 7740 .0 .0 100* 26.8 24.7 109 LOOMIS PARK 8240 .0 .0 100* 30.9 29.9 104 NEW FORK LAKE 8340 .0 .0 100* 23.8 23.0 104 SNIDER BASIN 8250 .0 .0 100* 28.9 24.0 121 SPRING CREEK DIVIDE 9000 .5 .0 * 43.4 39.5 110 TRIPLE PEAK 8500 .0 .0 100* 45.7 46.3 99 ----- ----- Basin wide percent of average * 106 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 24.3 21.2 115 HEWINTA 9500 .0 .0 100* 27.4 25.3 109 HICKERSON PARK 9150 .0 .0 100* 22.8 21.4 107 HOLE-IN-ROCK 9150 .0 .0 100* 23.0 21.4 108 INDIAN CREEK 9425 .5 .0 * 41.3 38.4 108 KELLEY R.S. 8180 .0 .0 100* 31.2 29.8 105 STEEL CREEK PARK 10100 .0 .2 -0* 32.9 29.7 111 ----- ----- Basin wide percent of average 0* 109 UPPER BEAR RIVER BUG LAKE 7950 .2 .2 100* 34.3 29.3 118 HAYDEN FORK 9400 .3 .2 200* 36.5 32.8 112 KELLEY R.S. 8180 .0 .0 100* 31.2 29.8 105 LILY LAKE 9050 .7 .2 601* 32.4 27.2 120 MONTE CRISTO 8960 .0 .2 -0* -M 39.5 * SALT RIVER SUMMIT 7600 .2 .0 * 31.0 26.8 117 TRIAL LAKE 9960 .0 .2 0* 39.5 38.9 102 ----- ----- Basin wide percent of average 181* 111 ----------------------------------------------------------------------------- -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.