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 SATURDAY: MARCH 27 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.0 17.5 131 26.8 22.4 120 COTTONWOOD CREEK 7600 24.0 23.6 102 26.8 25.2 106 GRANITE CREEK 6770 21.2 18.3 116 22.7 23.5 97 GRASSY LAKE 7265 42.5 35.3 120 39.9 37.2 107 GROS VENTRE SUMMIT 8775 -M 15.4 * -M 16.0 * LEWIS LAKE DIVIDE 7860 39.8 34.8 114 39.3 37.8 104 PHILLIPS BENCH 8200 31.8 28.7 111 31.0 29.9 104 SALT RIVER SUMMIT 7600 15.4 14.1 109 18.0 16.9 107 SNAKE RIVER STATION 6920 22.0 18.5 119 25.3 26.1 97 SPRING CREEK DIVIDE 9000 28.5 27.6 103 26.9 27.5 98 THUMB DIVIDE 7980 -M 16.8 * -M 20.9 * TOGWOTEE PASS 9580 -M 24.5 * 27.8 28.3 98 TWO OCEAN PLATEAU 9360 35.5 26.2 135 30.9 30.8 100 WILLOW CREEK 8450 32.8 29.9 110 37.2 32.2 116 ----- ----- Basin wide percent of average 115 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.8 23.2 111 23.0 17.7 130 BLACK BEAR 7950 48.7 37.5 130 -M 40.1 * CANYON 7940 17.7 12.7 139 18.6 14.0 133 FISHER CREEK 9100 39.3 35.2 112 36.1 36.1 100 MADISON PLATEAU 7750 -M 24.2 * 31.2 25.9 120 NORTHEAST ENTRANCE 7350 11.3 9.1 124 13.9 11.6 120 PARKER PEAK 9400 22.8 21.3 107 -M 15.3 * SYLVAN LAKE 8420 25.4 21.7 117 27.0 18.8 144 THUMB DIVIDE 7980 -M 16.8 * -M 20.9 * TWO OCEAN PLATEAU 9360 35.5 26.2 135 30.9 30.8 100 WHISKEY CREEK 6800 20.4 17.1 119 23.7 21.5 110 WHITE MILL 8700 27.2 24.6 111 24.3 27.9 87 WOLVERINE 7650 12.3 11.5 107 12.3 12.5 98 ----- ----- Basin wide percent of average 119 111 WIND RIVER BURROUGHS CREEK 8750 16.6 14.8 112 17.8 16.3 109 COLD SPRINGS 9630 8.7 8.2 106 11.1 10.2 109 DEER PARK 9700 15.8 -M * 20.9 -M * HOBBS PARK 10100 16.5 14.6 113 14.7 13.7 107 LITTLE WARM 9620 13.7 11.2 122 14.8 12.9 115 SOUTH PASS 9040 16.8 16.0 105 17.9 16.6 108 ST. LAWRENCE ALT 8620 6.5 7.4 88 9.7 9.8 99 TOGWOTEE PASS 9580 -M 24.5 * 27.8 28.3 98 TOWNSEND CREEK 8700 9.0 9.6 94 12.0 12.1 99 ----- ----- Basin wide percent of average 107 105 BIGHORN BASIN BALD MTN. 9375 19.0 20.0 95 17.7 16.9 105 BEAR TRAP MEADOW 7900 4.9 7.0 70 9.1 7.9 115 BLACKWATER 9780 29.5 21.8 135 24.2 17.6 138 BONE SPRINGS DIV 9350 14.7 16.0 92 15.1 14.6 103 EVENING STAR 9200 32.3 26.5 122 33.4 22.1 151 GRAVE SPRINGS 8550 7.8 9.3 84 10.6 9.2 115 KIRWIN 9550 12.1 9.7 125 13.8 10.4 133 MARQUETTE 8760 7.8 7.9 99 8.6 9.1 95 MIDDLE POWDER 7760 10.1 11.8 86 15.0 11.4 132 OWL CREEK 8975 5.9 4.5 131 6.4 6.0 107 POWDER RIVER PASS 9480 11.4 10.6 108 14.8 11.2 132 SHELL CREEK 9580 15.9 14.6 109 14.7 12.7 116 SYLVAN LAKE 8420 25.4 21.7 117 27.0 18.8 144 SYLVAN ROAD 8120 16.8 12.4 135 19.0 15.8 120 TIMBER CREEK 7950 4.8 6.1 79 6.4 6.7 96 YOUNTS PEAK 8350 21.0 16.9 124 18.8 16.2 116 ----- ----- Basin wide percent of average 110 123 SHOSHONE RIVER BLACKWATER 9780 29.5 21.8 135 24.2 17.6 138 EVENING STAR 9200 32.3 26.5 122 33.4 22.1 151 KIRWIN 9550 12.1 9.7 125 13.8 10.4 133 MARQUETTE 8760 7.8 7.9 99 8.6 9.1 95 SYLVAN LAKE 8420 25.4 21.7 117 27.0 18.8 144 SYLVAN ROAD 8120 16.8 12.4 135 19.0 15.8 120 YOUNTS PEAK 8350 21.0 16.9 124 18.8 16.2 116 ----- ----- Basin wide percent of average 124 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.9 7.0 70 9.1 7.9 115 BIG GOOSE 7990 6.0 -M * 9.3 -M * BONE SPRINGS DIV 9350 14.7 16.0 92 15.1 14.6 103 BURGESS JUNCTION 7880 8.4 11.5 73 10.0 11.0 91 CLOUD PEAK RESERVOIR 9860 14.2 14.3 99 12.7 12.8 99 DOME LAKE 8880 -M 13.4 * 10.2 12.7 80 GRAVE SPRINGS 8550 7.8 9.3 84 10.6 9.2 115 HANSEN SAWMILL 8760 4.3 6.9 62 7.8 7.6 103 MIDDLE POWDER 7760 10.1 11.8 86 15.0 11.4 132 POWDER RIVER PASS 9480 11.4 10.6 108 14.8 11.2 132 SUCKER CREEK 8880 9.8 11.8 83 12.3 12.7 97 TIE CREEK 6870 2.0 -M * 8.0 10.5 76 ----- ----- Basin wide percent of average 86 103 BELLE FOURCHE BLIND PARK 6890 6.3 10.8 58 14.9 9.6 155 NORTH RAPID CREEK 6130 5.0 -M * 12.4 -M * WARREN PEAK 6520 9.7 10.8 90 14.0 7.7 182 ----- ----- Basin wide percent of average 74 167 UPPER N. PLATTE RIVER COLUMBINE 9400 18.9 24.5 77 21.0 23.9 88 DIVIDE PEAK 8800 17.6 20.5 86 22.9 22.1 104 ELK RIVER 8700 14.8 19.5 76 20.6 18.6 111 JOE WRIGHT 10120 19.0 21.4 89 25.0 24.2 103 NORTH FRENCH CREEK 10100 27.6 24.8 111 27.4 22.8 120 OLD BATTLE 10000 26.7 31.2 86 33.5 29.3 114 SOUTH BRUSH CREEK 8400 11.3 12.8 88 18.2 15.8 115 TOWER 10500 41.2 44.2 93 36.8 35.2 105 WEBBER SPRINGS 9200 17.7 27.3 65 24.4 24.5 100 WILLOW CREEK PASS 9540 11.1 11.6 96 11.7 12.2 96 ----- ----- Basin wide percent of average 87 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.3 25.3 60 21.0 18.8 112 CASPER MTN. 7900 10.2 15.8 65 15.5 13.5 115 DEADMAN HILL 10220 15.7 16.1 98 16.5 16.1 102 DEER PARK 9700 15.8 -M * 20.9 -M * LAPRELE CREEK 8320 -M 10.2 * 13.8 11.4 121 RENO HILL 8400 12.4 13.8 90 17.4 18.5 94 ROACH 9700 14.8 16.9 88 18.3 20.5 89 SAND LAKE 10080 32.4 32.1 101 26.8 19.7 136 SOUTH PASS 9040 16.8 16.0 105 17.9 16.6 108 WINDY PEAK 7840 6.1 8.4 73 12.1 9.1 133 ----- ----- Basin wide percent of average 86 110 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.3 11.2 92 16.1 14.9 108 DIVIDE PEAK 8800 17.6 20.5 86 22.9 22.1 104 OLD BATTLE 10000 26.7 31.2 86 33.5 29.3 114 SANDSTONE RS 8150 10.7 14.6 73 19.1 18.1 106 WHISKEY PARK 8950 24.5 28.2 87 27.9 27.3 102 ----- ----- Basin wide percent of average 85 107 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.9 14.3 111 14.8 16.3 91 BLIND BULL SUM 8650 27.5 29.0 95 21.6 24.0 90 EAST RIM DIVIDE 7930 13.2 13.8 96 13.5 15.2 89 ELKHART PARK G.S. 9400 13.5 13.6 99 13.9 16.0 87 GROS VENTRE SUMMIT 8775 -M 15.4 * -M 16.0 * KENDALL R.S. 7740 14.5 14.6 99 15.5 15.6 99 LOOMIS PARK 8240 -M 17.3 * 19.4 18.9 103 NEW FORK LAKE 8340 12.1 11.1 109 11.6 14.5 80 SNIDER BASIN 8250 15.6 14.6 107 16.2 15.2 107 SPRING CREEK DIVIDE 9000 28.5 27.6 103 26.9 27.5 98 TRIPLE PEAK 8500 27.6 25.3 109 28.4 31.1 91 ----- ----- Basin wide percent of average 103 94 LOWER GREEN RIVER HAMS FORK 7840 13.0 12.2 107 10.9 13.4 81 HEWINTA 9500 10.3 11.1 93 13.5 12.6 107 HICKERSON PARK 9150 5.7 6.6 86 9.0 9.1 99 HOLE-IN-ROCK 9150 5.9 6.2 95 -M 9.1 * INDIAN CREEK 9425 28.6 28.1 102 23.9 25.9 92 KELLEY R.S. 8180 16.5 16.9 98 18.0 18.8 96 STEEL CREEK PARK 10100 13.9 15.9 87 15.7 12.4 127 ----- ----- Basin wide percent of average 97 99 UPPER BEAR RIVER BUG LAKE 7950 20.8 20.6 101 18.7 19.0 98 HAYDEN FORK 9400 13.8 16.2 85 19.8 18.5 107 KELLEY R.S. 8180 16.5 16.9 98 18.0 18.8 96 LILY LAKE 9050 12.0 12.9 93 17.3 14.3 121 MONTE CRISTO 8960 24.9 28.9 86 25.1 24.9 101 SALT RIVER SUMMIT 7600 15.4 14.1 109 18.0 16.9 107 TRIAL LAKE 9960 20.5 24.6 83 21.1 23.3 91 ----- ----- Basin wide percent of average 92 102 ----------------------------------------------------------------------------- -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.