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 SUNDAY: MARCH 28 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.4 17.5 134 26.9 22.5 120 COTTONWOOD CREEK 7600 24.6 23.8 103 27.4 25.3 108 GRANITE CREEK 6770 21.4 18.4 116 22.9 23.6 97 GRASSY LAKE 7265 42.9 35.5 121 39.9 37.4 107 GROS VENTRE SUMMIT 8775 15.4 15.5 99 15.2 16.0 95 LEWIS LAKE DIVIDE 7860 40.4 35.0 115 39.5 38.0 104 PHILLIPS BENCH 8200 32.3 28.8 112 31.4 30.0 105 SALT RIVER SUMMIT 7600 15.7 14.2 111 18.1 17.0 106 SNAKE RIVER STATION 6920 22.1 18.5 119 25.6 26.2 98 SPRING CREEK DIVIDE 9000 28.9 27.7 104 27.2 27.6 99 THUMB DIVIDE 7980 23.2 16.9 137 22.2 21.0 106 TOGWOTEE PASS 9580 -M 24.7 * 27.9 28.4 98 TWO OCEAN PLATEAU 9360 35.7 26.3 136 31.0 30.9 100 WILLOW CREEK 8450 33.1 30.0 110 37.4 32.3 116 ----- ----- Basin wide percent of average 117 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.9 23.3 111 23.0 17.8 129 BLACK BEAR 7950 49.5 37.7 131 -M 40.3 * CANYON 7940 18.1 12.8 141 19.0 14.1 135 FISHER CREEK 9100 39.6 35.4 112 36.2 36.3 100 MADISON PLATEAU 7750 -M 24.3 * 31.5 26.1 121 NORTHEAST ENTRANCE 7350 11.5 9.1 126 14.0 11.7 120 PARKER PEAK 9400 23.0 21.4 107 -M 15.4 * SYLVAN LAKE 8420 25.7 21.9 117 27.4 18.9 145 THUMB DIVIDE 7980 23.2 16.9 137 22.2 21.0 106 TWO OCEAN PLATEAU 9360 35.7 26.3 136 31.0 30.9 100 WHISKEY CREEK 6800 20.7 17.1 121 23.8 21.7 110 WHITE MILL 8700 27.6 24.7 112 24.5 28.1 87 WOLVERINE 7650 12.4 11.5 108 12.5 12.6 99 ----- ----- Basin wide percent of average 121 111 WIND RIVER BURROUGHS CREEK 8750 16.7 14.8 113 17.9 16.4 109 COLD SPRINGS 9630 8.8 8.2 107 11.1 10.3 108 DEER PARK 9700 16.1 -M * 21.3 -M * HOBBS PARK 10100 16.6 14.7 113 15.1 13.8 109 LITTLE WARM 9620 13.9 11.3 123 15.2 13.0 117 SOUTH PASS 9040 17.1 16.1 106 18.1 16.7 108 ST. LAWRENCE ALT 8620 6.6 7.5 88 9.7 9.9 98 TOGWOTEE PASS 9580 -M 24.7 * 27.9 28.4 98 TOWNSEND CREEK 8700 9.0 9.7 93 12.0 12.2 98 ----- ----- Basin wide percent of average 108 105 BIGHORN BASIN BALD MTN. 9375 19.4 20.1 97 17.5 17.0 103 BEAR TRAP MEADOW 7900 5.1 7.0 73 9.2 8.0 115 BLACKWATER 9780 29.7 21.9 136 24.1 17.7 136 BONE SPRINGS DIV 9350 15.0 16.1 93 15.3 14.7 104 EVENING STAR 9200 32.4 26.6 122 33.8 22.2 152 GRAVE SPRINGS 8550 8.0 9.3 86 10.8 9.3 116 KIRWIN 9550 12.1 9.8 123 13.9 10.5 132 MARQUETTE 8760 7.6 7.9 96 8.3 9.2 90 MIDDLE POWDER 7760 10.4 11.9 87 15.1 11.5 131 OWL CREEK 8975 5.9 4.5 131 6.1 6.0 102 POWDER RIVER PASS 9480 11.4 10.7 107 14.8 11.2 132 SHELL CREEK 9580 16.4 14.7 112 15.0 12.8 117 SYLVAN LAKE 8420 25.7 21.9 117 27.4 18.9 145 SYLVAN ROAD 8120 17.1 12.5 137 19.4 15.9 122 TIMBER CREEK 7950 4.8 6.1 79 6.5 6.8 96 YOUNTS PEAK 8350 21.2 17.0 125 18.8 16.3 115 ----- ----- Basin wide percent of average 111 123 SHOSHONE RIVER BLACKWATER 9780 29.7 21.9 136 24.1 17.7 136 EVENING STAR 9200 32.4 26.6 122 33.8 22.2 152 KIRWIN 9550 12.1 9.8 123 13.9 10.5 132 MARQUETTE 8760 7.6 7.9 96 8.3 9.2 90 SYLVAN LAKE 8420 25.7 21.9 117 27.4 18.9 145 SYLVAN ROAD 8120 17.1 12.5 137 19.4 15.9 122 YOUNTS PEAK 8350 21.2 17.0 125 18.8 16.3 115 ----- ----- Basin wide percent of average 124 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.1 7.0 73 9.2 8.0 115 BIG GOOSE 7990 6.2 -M * 9.4 -M * BONE SPRINGS DIV 9350 15.0 16.1 93 15.3 14.7 104 BURGESS JUNCTION 7880 8.5 11.5 74 10.3 11.1 93 CLOUD PEAK RESERVOIR 9860 14.4 14.5 99 12.6 12.9 98 DOME LAKE 8880 -M 13.5 * 10.7 12.8 84 GRAVE SPRINGS 8550 8.0 9.3 86 10.8 9.3 116 HANSEN SAWMILL 8760 4.2 7.0 60 8.0 7.7 104 MIDDLE POWDER 7760 10.4 11.9 87 15.1 11.5 131 POWDER RIVER PASS 9480 11.4 10.7 107 14.8 11.2 132 SUCKER CREEK 8880 9.7 11.9 82 12.3 12.8 96 TIE CREEK 6870 2.0 -M * 8.2 10.6 77 ----- ----- Basin wide percent of average 87 104 BELLE FOURCHE BLIND PARK 6890 6.7 10.9 61 15.4 9.7 159 NORTH RAPID CREEK 6130 5.2 -M * 12.5 -M * WARREN PEAK 6520 10.0 10.9 92 14.5 7.8 186 ----- ----- Basin wide percent of average 77 171 UPPER N. PLATTE RIVER COLUMBINE 9400 19.0 24.5 78 21.1 24.0 88 DIVIDE PEAK 8800 18.0 20.7 87 23.1 22.3 104 ELK RIVER 8700 15.2 19.6 78 21.2 18.7 113 JOE WRIGHT 10120 19.4 21.5 90 25.6 24.4 105 NORTH FRENCH CREEK 10100 28.4 25.0 114 28.1 22.9 123 OLD BATTLE 10000 27.6 31.4 88 34.2 29.5 116 SOUTH BRUSH CREEK 8400 11.3 12.9 88 18.8 15.9 118 TOWER 10500 42.3 44.4 95 37.6 35.4 106 WEBBER SPRINGS 9200 18.3 27.5 67 25.1 24.6 102 WILLOW CREEK PASS 9540 11.4 11.6 98 11.5 12.3 93 ----- ----- Basin wide percent of average 88 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.7 25.5 62 21.5 18.9 114 CASPER MTN. 7900 10.1 16.0 63 15.6 13.6 115 DEADMAN HILL 10220 15.4 16.2 95 16.8 16.2 104 DEER PARK 9700 16.1 -M * 21.3 -M * LAPRELE CREEK 8320 -M 10.3 * 13.8 11.5 120 RENO HILL 8400 13.0 13.9 94 17.2 18.6 92 ROACH 9700 15.2 17.0 89 18.6 20.6 90 SAND LAKE 10080 33.3 32.3 103 27.6 19.8 139 SOUTH PASS 9040 17.1 16.1 106 18.1 16.7 108 WINDY PEAK 7840 6.3 8.5 74 12.3 9.2 134 ----- ----- Basin wide percent of average 87 111 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.7 11.2 96 16.4 15.0 109 DIVIDE PEAK 8800 18.0 20.7 87 23.1 22.3 104 OLD BATTLE 10000 27.6 31.4 88 34.2 29.5 116 SANDSTONE RS 8150 11.2 14.7 76 19.5 18.2 107 WHISKEY PARK 8950 25.3 28.4 89 28.5 27.5 104 ----- ----- Basin wide percent of average 87 108 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.8 14.4 110 15.1 16.3 93 BLIND BULL SUM 8650 27.3 29.2 93 21.8 24.1 90 EAST RIM DIVIDE 7930 13.6 13.8 99 13.8 15.3 90 ELKHART PARK G.S. 9400 13.4 13.6 99 14.1 16.0 88 GROS VENTRE SUMMIT 8775 15.4 15.5 99 15.2 16.0 95 KENDALL R.S. 7740 14.8 14.6 101 15.8 15.6 101 LOOMIS PARK 8240 -M 17.3 * 19.8 19.0 104 NEW FORK LAKE 8340 12.2 11.2 109 11.5 14.6 79 SNIDER BASIN 8250 16.0 14.7 109 16.5 15.3 108 SPRING CREEK DIVIDE 9000 28.9 27.7 104 27.2 27.6 99 TRIPLE PEAK 8500 28.5 25.4 112 28.6 31.2 92 ----- ----- Basin wide percent of average 103 95 LOWER GREEN RIVER HAMS FORK 7840 13.1 12.2 107 10.9 13.5 81 HEWINTA 9500 10.8 11.1 97 13.8 12.7 109 HICKERSON PARK 9150 5.8 6.6 88 9.1 9.2 99 HOLE-IN-ROCK 9150 6.0 6.3 95 -M 9.2 * INDIAN CREEK 9425 28.7 28.3 101 23.9 26.1 92 KELLEY R.S. 8180 16.8 17.0 99 18.3 18.9 97 STEEL CREEK PARK 10100 13.9 16.1 86 15.9 12.5 127 ----- ----- Basin wide percent of average 97 99 UPPER BEAR RIVER BUG LAKE 7950 21.2 20.7 102 19.0 19.1 99 HAYDEN FORK 9400 14.5 16.2 90 19.5 18.6 105 KELLEY R.S. 8180 16.8 17.0 99 18.3 18.9 97 LILY LAKE 9050 12.3 13.0 95 17.6 14.4 122 MONTE CRISTO 8960 25.4 29.1 87 25.5 25.1 102 SALT RIVER SUMMIT 7600 15.7 14.2 111 18.1 17.0 106 TRIAL LAKE 9960 20.8 24.7 84 21.4 23.4 91 ----- ----- Basin wide percent of average 94 102 ----------------------------------------------------------------------------- -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.