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: MARCH 13 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.3 16.6 92 17.5 21.1 83 COTTONWOOD CREEK 7600 19.2 21.2 91 20.3 23.6 86 GRANITE CREEK 6770 16.0 16.9 95 18.1 22.2 82 GRASSY LAKE 7265 28.6 32.5 88 29.4 34.7 85 GROS VENTRE SUMMIT 8775 9.6 14.2 68 10.6 15.0 71 LEWIS LAKE DIVIDE 7860 25.5 32.3 79 27.1 35.2 77 PHILLIPS BENCH 8200 23.8 26.6 89 24.0 27.8 86 SALT RIVER SUMMIT 7600 13.9 13.1 106 15.9 16.0 99 SNAKE RIVER STATION 6920 15.1 17.5 86 17.9 24.3 74 SPRING CREEK DIVIDE 9000 19.7 25.4 78 19.0 25.6 74 THUMB DIVIDE 7980 13.9 15.6 89 15.1 19.8 76 TOGWOTEE PASS 9580 22.4 22.6 99 20.7 26.4 78 TWO OCEAN PLATEAU 9360 23.5 24.3 97 23.6 29.1 81 WILLOW CREEK 8450 24.8 28.0 89 27.3 30.3 90 ----- ----- Basin wide percent of average 88 82 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.9 21.5 79 14.8 16.3 91 BLACK BEAR 7950 33.6 34.7 97 -M 36.6 * CANYON 7940 11.8 11.7 101 12.9 13.0 99 FISHER CREEK 9100 26.9 32.7 82 24.2 33.2 73 MADISON PLATEAU 7750 18.0 22.4 80 19.3 23.7 81 NORTHEAST ENTRANCE 7350 6.7 8.7 77 10.9 10.9 100 PARKER PEAK 9400 16.2 19.7 82 14.3 14.1 101 SYLVAN LAKE 8420 15.0 20.1 75 17.9 17.5 102 THUMB DIVIDE 7980 13.9 15.6 89 15.1 19.8 76 TWO OCEAN PLATEAU 9360 23.5 24.3 97 23.6 29.1 81 WHISKEY CREEK 6800 12.6 15.8 80 15.5 19.6 79 WHITE MILL 8700 20.0 23.2 86 18.5 25.7 72 WOLVERINE 7650 9.0 10.9 83 9.3 11.7 79 ----- ----- Basin wide percent of average 86 84 WIND RIVER BURROUGHS CREEK 8750 12.8 14.0 91 13.9 15.0 93 COLD SPRINGS 9630 8.4 7.6 111 9.1 9.3 98 DEER PARK 9700 -M -M * 16.9 -M * HOBBS PARK 10100 11.6 13.3 87 10.5 12.4 85 LITTLE WARM 9620 9.0 10.2 88 10.8 11.8 92 SOUTH PASS 9040 12.4 15.0 83 13.7 15.1 91 ST. LAWRENCE ALT 8620 8.0 6.9 116 7.9 8.9 89 TOGWOTEE PASS 9580 22.4 22.6 99 20.7 26.4 78 TOWNSEND CREEK 8700 9.0 8.9 101 10.5 10.8 97 ----- ----- Basin wide percent of average 95 89 BIGHORN BASIN BALD MTN. 9375 17.6 18.5 95 15.6 15.4 101 BEAR TRAP MEADOW 7900 5.8 6.4 91 5.9 7.0 84 BLACKWATER 9780 17.9 19.9 90 16.0 16.3 98 BONE SPRINGS DIV 9350 14.3 14.7 97 14.2 13.0 109 EVENING STAR 9200 20.1 24.5 82 21.8 20.4 107 GRAVE SPRINGS 8550 8.1 -M * 8.3 8.3 100 KIRWIN 9550 10.5 8.9 118 11.8 9.5 124 MARQUETTE 8760 10.9 7.2 151 11.3 8.0 141 MIDDLE POWDER 7760 9.3 10.7 87 8.8 10.2 86 OWL CREEK 8975 5.5 4.0 138 5.5 5.4 102 POWDER RIVER PASS 9480 9.6 9.7 99 10.4 10.2 102 SHELL CREEK 9580 12.6 13.6 93 9.7 11.6 84 SYLVAN LAKE 8420 15.0 20.1 75 17.9 17.5 102 SYLVAN ROAD 8120 9.1 12.1 75 12.7 14.6 87 TIMBER CREEK 7950 7.0 5.5 127 8.5 5.8 147 YOUNTS PEAK 8350 12.9 15.8 82 12.9 15.0 86 ----- ----- Basin wide percent of average 93 102 SHOSHONE RIVER BLACKWATER 9780 17.9 19.9 90 16.0 16.3 98 EVENING STAR 9200 20.1 24.5 82 21.8 20.4 107 KIRWIN 9550 10.5 8.9 118 11.8 9.5 124 MARQUETTE 8760 10.9 7.2 151 11.3 8.0 141 SYLVAN LAKE 8420 15.0 20.1 75 17.9 17.5 102 SYLVAN ROAD 8120 9.1 12.1 75 12.7 14.6 87 YOUNTS PEAK 8350 12.9 15.8 82 12.9 15.0 86 ----- ----- Basin wide percent of average 89 103 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.8 6.4 91 5.9 7.0 84 BONE SPRINGS DIV 9350 14.3 14.7 97 14.2 13.0 109 BURGESS JUNCTION 7880 9.5 10.6 90 10.7 9.7 110 CLOUD PEAK RESERVOIR 9860 12.3 12.7 97 12.3 11.5 107 DOME LAKE 8880 9.9 12.3 80 11.5 11.5 100 GRAVE SPRINGS 8550 8.1 -M * 8.3 8.3 100 HANSEN SAWMILL 8760 6.9 6.4 108 7.9 6.7 118 MIDDLE POWDER 7760 9.3 10.7 87 8.8 10.2 86 POWDER RIVER PASS 9480 9.6 9.7 99 10.4 10.2 102 SUCKER CREEK 8880 10.8 10.7 101 12.5 11.5 109 TIE CREEK 6870 7.0 -M * 10.6 9.3 114 ----- ----- Basin wide percent of average 94 104 BELLE FOURCHE BLIND PARK 6890 9.1 10.0 91 11.8 8.5 139 NORTH RAPID CREEK 6130 9.5 -M * 9.5 -M * WARREN PEAK 6520 12.1 10.0 121 9.8 6.9 142 ----- ----- Basin wide percent of average 106 140 UPPER N. PLATTE RIVER COLUMBINE 9400 20.5 23.1 89 20.6 22.0 94 DIVIDE PEAK 8800 16.6 18.4 90 17.7 20.3 87 ELK RIVER 8700 15.8 18.2 87 16.1 16.9 95 JOE WRIGHT 10120 17.9 19.3 93 21.0 22.1 95 NORTH FRENCH CREEK 10100 26.0 22.5 116 24.7 20.7 119 OLD BATTLE 10000 27.5 28.3 97 29.6 26.7 111 SOUTH BRUSH CREEK 8400 10.3 10.9 94 11.3 14.2 80 TOWER 10500 -M 40.6 * -M 32.4 * WEBBER SPRINGS 9200 18.2 24.5 74 22.7 22.4 101 WILLOW CREEK PASS 9540 6.1 10.3 59 6.5 10.9 60 ----- ----- Basin wide percent of average 91 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.2 22.2 77 17.4 17.0 102 CASPER MTN. 7900 11.5 13.7 84 11.2 12.0 93 DEADMAN HILL 10220 12.2 14.8 82 11.8 14.4 82 DEER PARK 9700 -M -M * 16.9 -M * LAPRELE CREEK 8320 8.7 9.3 94 9.9 10.1 98 RENO HILL 8400 11.2 12.1 93 10.4 16.4 63 ROACH 9700 13.1 15.4 85 14.8 18.8 79 SAND LAKE 10080 22.1 29.4 75 19.9 18.0 111 SOUTH PASS 9040 12.4 15.0 83 13.7 15.1 91 WINDY PEAK 7840 6.7 7.4 91 7.9 8.0 99 ----- ----- Basin wide percent of average 83 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.6 10.7 118 14.4 13.6 106 DIVIDE PEAK 8800 16.6 18.4 90 17.7 20.3 87 OLD BATTLE 10000 27.5 28.3 97 29.6 26.7 111 SANDSTONE RS 8150 14.5 13.4 108 17.3 16.6 104 WHISKEY PARK 8950 26.0 25.9 100 24.7 24.7 100 ----- ----- Basin wide percent of average 101 102 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.0 13.2 76 9.3 15.3 61 BLIND BULL SUM 8650 20.5 26.7 77 16.1 22.4 72 EAST RIM DIVIDE 7930 9.5 13.0 73 9.6 14.3 67 ELKHART PARK G.S. 9400 10.5 12.6 83 10.9 15.1 72 GROS VENTRE SUMMIT 8775 9.6 14.2 68 10.6 15.0 71 KENDALL R.S. 7740 12.2 14.1 87 12.1 14.7 82 LOOMIS PARK 8240 11.7 16.3 72 13.4 17.8 75 NEW FORK LAKE 8340 9.0 10.6 85 8.8 13.6 65 SNIDER BASIN 8250 10.3 13.8 75 10.7 14.3 75 SPRING CREEK DIVIDE 9000 19.7 25.4 78 19.0 25.6 74 TRIPLE PEAK 8500 18.8 23.5 80 19.0 29.4 65 ----- ----- Basin wide percent of average 77 71 LOWER GREEN RIVER HAMS FORK 7840 10.3 11.7 88 9.6 12.6 76 HEWINTA 9500 10.3 9.8 105 13.0 11.3 115 HICKERSON PARK 9150 9.6 5.7 168 10.4 8.1 128 HOLE-IN-ROCK 9150 7.0 5.4 130 9.3 8.1 115 INDIAN CREEK 9425 21.5 25.6 84 16.8 24.1 70 KELLEY R.S. 8180 13.9 15.7 89 14.4 17.7 81 STEEL CREEK PARK 10100 13.0 14.1 92 15.8 11.3 140 ----- ----- Basin wide percent of average 97 96 UPPER BEAR RIVER BUG LAKE 7950 20.2 18.6 109 19.5 17.3 113 HAYDEN FORK 9400 12.5 15.2 82 17.6 16.7 105 KELLEY R.S. 8180 13.9 15.7 89 14.4 17.7 81 LILY LAKE 9050 12.6 11.6 109 14.9 12.9 116 MONTE CRISTO 8960 28.4 26.0 109 24.5 22.7 108 SALT RIVER SUMMIT 7600 13.9 13.1 106 15.9 16.0 99 TRIAL LAKE 9960 19.1 23.3 82 19.8 21.4 93 ----- ----- Basin wide percent of average 98 102 ----------------------------------------------------------------------------- -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.