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 MONDAY: MARCH 9 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.0 16.3 92 17.1 20.8 82 COTTONWOOD CREEK 7600 18.8 20.3 93 19.9 23.2 86 GRANITE CREEK 6770 15.7 16.4 96 17.7 21.8 81 GRASSY LAKE 7265 27.7 31.5 88 28.5 33.9 84 GROS VENTRE SUMMIT 8775 9.5 13.8 69 10.6 14.7 72 LEWIS LAKE DIVIDE 7860 24.8 31.4 79 26.4 34.5 77 PHILLIPS BENCH 8200 23.5 25.8 91 23.5 27.3 86 SALT RIVER SUMMIT 7600 13.6 12.8 106 15.4 15.7 98 SNAKE RIVER STATION 6920 14.6 17.1 85 17.6 23.8 74 SPRING CREEK DIVIDE 9000 19.2 24.7 78 18.5 25.1 74 THUMB DIVIDE 7980 13.5 15.2 89 14.9 19.4 77 TOGWOTEE PASS 9580 22.0 22.0 100 20.0 25.8 78 TWO OCEAN PLATEAU 9360 23.0 23.6 97 22.6 28.7 79 WILLOW CREEK 8450 24.0 27.3 88 27.0 29.7 91 ----- ----- Basin wide percent of average 89 81 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.3 21.0 78 14.3 15.9 90 BLACK BEAR 7950 32.8 33.7 97 -M 35.7 * CANYON 7940 11.3 11.4 99 12.7 12.7 100 FISHER CREEK 9100 26.2 31.9 82 23.3 32.4 72 MADISON PLATEAU 7750 17.6 21.8 81 18.9 23.1 82 NORTHEAST ENTRANCE 7350 6.4 8.5 75 10.6 10.6 100 PARKER PEAK 9400 15.7 19.1 82 13.6 13.8 99 SYLVAN LAKE 8420 14.4 19.6 73 17.2 17.1 101 THUMB DIVIDE 7980 13.5 15.2 89 14.9 19.4 77 TWO OCEAN PLATEAU 9360 23.0 23.6 97 22.6 28.7 79 WHISKEY CREEK 6800 12.3 15.4 80 15.0 19.1 79 WHITE MILL 8700 19.5 22.5 87 17.7 25.1 71 WOLVERINE 7650 8.5 10.6 80 9.1 11.5 79 ----- ----- Basin wide percent of average 86 83 WIND RIVER BURROUGHS CREEK 8750 12.6 13.7 92 13.8 14.7 94 COLD SPRINGS 9630 8.2 7.4 111 9.0 9.0 100 DEER PARK 9700 -M -M * 16.8 -M * HOBBS PARK 10100 11.4 12.9 88 10.4 12.0 87 LITTLE WARM 9620 8.6 9.9 87 10.6 11.4 93 SOUTH PASS 9040 12.3 14.7 84 13.7 14.7 93 ST. LAWRENCE ALT 8620 7.9 6.7 118 7.8 8.6 91 TOGWOTEE PASS 9580 22.0 22.0 100 20.0 25.8 78 TOWNSEND CREEK 8700 9.0 8.6 105 10.4 10.5 99 ----- ----- Basin wide percent of average 96 90 BIGHORN BASIN BALD MTN. 9375 17.1 18.0 95 15.3 15.0 102 BEAR TRAP MEADOW 7900 5.3 6.2 85 5.1 6.8 75 BLACKWATER 9780 17.4 19.3 90 15.7 15.9 99 BONE SPRINGS DIV 9350 14.0 14.3 98 14.0 12.6 111 EVENING STAR 9200 19.3 23.8 81 21.1 20.0 106 GRAVE SPRINGS 8550 8.0 -M * 8.2 8.0 102 KIRWIN 9550 10.4 8.6 121 11.7 9.2 127 MARQUETTE 8760 10.6 7.0 151 10.9 7.7 142 MIDDLE POWDER 7760 9.1 10.4 88 8.8 9.9 89 OWL CREEK 8975 5.3 3.9 136 5.2 5.2 100 POWDER RIVER PASS 9480 9.3 9.4 99 10.2 9.9 103 SHELL CREEK 9580 12.3 13.3 92 9.7 11.2 87 SYLVAN LAKE 8420 14.4 19.6 73 17.2 17.1 101 SYLVAN ROAD 8120 8.7 11.8 74 12.5 14.3 87 TIMBER CREEK 7950 7.0 5.3 132 8.5 5.6 152 YOUNTS PEAK 8350 12.7 15.5 82 12.7 14.6 87 ----- ----- Basin wide percent of average 93 102 SHOSHONE RIVER BLACKWATER 9780 17.4 19.3 90 15.7 15.9 99 EVENING STAR 9200 19.3 23.8 81 21.1 20.0 106 KIRWIN 9550 10.4 8.6 121 11.7 9.2 127 MARQUETTE 8760 10.6 7.0 151 10.9 7.7 142 SYLVAN LAKE 8420 14.4 19.6 73 17.2 17.1 101 SYLVAN ROAD 8120 8.7 11.8 74 12.5 14.3 87 YOUNTS PEAK 8350 12.7 15.5 82 12.7 14.6 87 ----- ----- Basin wide percent of average 89 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.3 6.2 85 5.1 6.8 75 BONE SPRINGS DIV 9350 14.0 14.3 98 14.0 12.6 111 BURGESS JUNCTION 7880 9.4 10.3 91 10.7 9.3 115 CLOUD PEAK RESERVOIR 9860 12.1 12.2 99 12.2 11.1 110 DOME LAKE 8880 9.5 12.0 79 11.5 11.1 104 GRAVE SPRINGS 8550 8.0 -M * 8.2 8.0 102 HANSEN SAWMILL 8760 6.6 6.2 106 7.7 6.5 118 MIDDLE POWDER 7760 9.1 10.4 88 8.8 9.9 89 POWDER RIVER PASS 9480 9.3 9.4 99 10.2 9.9 103 SUCKER CREEK 8880 10.7 10.4 103 12.4 11.2 111 TIE CREEK 6870 6.8 -M * 10.8 8.9 121 ----- ----- Basin wide percent of average 94 106 BELLE FOURCHE BLIND PARK 6890 9.1 9.7 94 11.8 8.2 144 NORTH RAPID CREEK 6130 9.5 -M * -M -M * WARREN PEAK 6520 11.9 9.7 123 -M 6.7 * ----- ----- Basin wide percent of average 108 144* UPPER N. PLATTE RIVER COLUMBINE 9400 20.1 22.4 90 20.1 21.5 93 DIVIDE PEAK 8800 16.4 17.9 92 17.2 19.8 87 ELK RIVER 8700 15.1 17.7 85 15.5 16.5 94 JOE WRIGHT 10120 17.7 18.7 95 21.0 21.4 98 NORTH FRENCH CREEK 10100 25.0 21.8 115 23.6 20.1 117 OLD BATTLE 10000 26.8 27.6 97 29.1 26.0 112 SOUTH BRUSH CREEK 8400 10.1 10.4 97 11.0 13.8 80 TOWER 10500 -M 39.5 * -M 31.6 * WEBBER SPRINGS 9200 17.8 23.8 75 22.2 21.9 101 WILLOW CREEK PASS 9540 6.1 9.9 62 6.3 10.6 59 ----- ----- Basin wide percent of average 91 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.3 21.4 76 16.9 16.5 102 CASPER MTN. 7900 11.5 13.2 87 11.0 11.6 95 DEADMAN HILL 10220 12.0 14.4 83 11.5 14.0 82 DEER PARK 9700 -M -M * 16.8 -M * LAPRELE CREEK 8320 8.6 9.0 96 9.7 9.8 99 RENO HILL 8400 11.1 11.7 95 10.2 15.8 65 ROACH 9700 12.7 14.9 85 14.4 18.3 79 SAND LAKE 10080 21.2 28.5 74 19.2 17.5 110 SOUTH PASS 9040 12.3 14.7 84 13.7 14.7 93 WINDY PEAK 7840 6.5 7.0 93 7.7 7.7 100 ----- ----- Basin wide percent of average 83 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 10.4 118 14.2 13.3 107 DIVIDE PEAK 8800 16.4 17.9 92 17.2 19.8 87 OLD BATTLE 10000 26.8 27.6 97 29.1 26.0 112 SANDSTONE RS 8150 14.1 13.0 108 17.1 16.2 106 WHISKEY PARK 8950 25.3 25.1 101 23.9 24.0 100 ----- ----- Basin wide percent of average 101 102 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.8 12.8 77 9.0 15.0 60 BLIND BULL SUM 8650 20.2 25.9 78 15.9 21.9 73 EAST RIM DIVIDE 7930 9.3 12.7 73 9.3 14.1 66 ELKHART PARK G.S. 9400 10.2 12.2 84 10.7 14.8 72 GROS VENTRE SUMMIT 8775 9.5 13.8 69 10.6 14.7 72 KENDALL R.S. 7740 12.0 13.6 88 11.9 14.4 83 LOOMIS PARK 8240 11.4 15.8 72 13.1 17.4 75 NEW FORK LAKE 8340 8.8 10.4 85 8.6 13.4 64 SNIDER BASIN 8250 10.0 13.5 74 10.3 14.1 73 SPRING CREEK DIVIDE 9000 19.2 24.7 78 18.5 25.1 74 TRIPLE PEAK 8500 18.3 22.9 80 18.6 28.9 64 ----- ----- Basin wide percent of average 78 70 LOWER GREEN RIVER HAMS FORK 7840 10.1 11.3 89 9.5 12.4 77 HEWINTA 9500 10.0 9.4 106 12.8 10.9 117 HICKERSON PARK 9150 9.5 5.5 173 10.4 7.8 133 HOLE-IN-ROCK 9150 6.9 5.1 135 9.3 7.8 119 INDIAN CREEK 9425 21.0 24.7 85 16.5 23.6 70 KELLEY R.S. 8180 13.7 15.2 90 14.1 17.4 81 STEEL CREEK PARK 10100 13.0 13.6 96 15.4 10.9 141 ----- ----- Basin wide percent of average 99 97 UPPER BEAR RIVER BUG LAKE 7950 19.9 18.1 110 19.2 16.9 114 HAYDEN FORK 9400 12.3 14.7 84 17.6 16.2 109 KELLEY R.S. 8180 13.7 15.2 90 14.1 17.4 81 LILY LAKE 9050 12.5 11.3 111 14.9 12.5 119 MONTE CRISTO 8960 28.1 25.2 112 24.4 22.1 110 SALT RIVER SUMMIT 7600 13.6 12.8 106 15.4 15.7 98 TRIAL LAKE 9960 19.0 22.6 84 19.8 20.8 95 ----- ----- Basin wide percent of average 99 103 ----------------------------------------------------------------------------- -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.