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 29 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.5 17.6 134 27.2 22.5 121 COTTONWOOD CREEK 7600 24.9 24.0 104 27.6 25.4 109 GRANITE CREEK 6770 21.5 18.5 116 22.9 23.7 97 GRASSY LAKE 7265 43.2 35.7 121 40.0 37.6 106 GROS VENTRE SUMMIT 8775 15.5 15.6 99 15.2 16.1 94 LEWIS LAKE DIVIDE 7860 40.6 35.2 115 39.7 38.1 104 PHILLIPS BENCH 8200 32.3 29.0 111 31.5 30.2 104 SALT RIVER SUMMIT 7600 15.9 14.3 111 18.2 17.1 106 SNAKE RIVER STATION 6920 22.3 18.6 120 25.6 26.3 97 SPRING CREEK DIVIDE 9000 29.1 27.9 104 27.3 27.7 99 THUMB DIVIDE 7980 23.3 17.0 137 22.3 21.1 106 TOGWOTEE PASS 9580 -M 24.8 * 28.1 28.6 98 TWO OCEAN PLATEAU 9360 35.9 26.4 136 31.1 31.0 100 WILLOW CREEK 8450 33.2 30.1 110 37.4 32.5 115 ----- ----- Basin wide percent of average 117 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.0 23.4 111 23.1 17.9 129 BLACK BEAR 7950 49.8 37.9 131 -M 40.6 * CANYON 7940 18.1 12.9 140 19.0 14.2 134 FISHER CREEK 9100 39.7 35.6 112 36.3 36.5 99 MADISON PLATEAU 7750 -M 24.4 * 31.5 26.2 120 NORTHEAST ENTRANCE 7350 11.6 9.1 127 14.0 11.7 120 PARKER PEAK 9400 23.0 21.5 107 -M 15.4 * SYLVAN LAKE 8420 25.8 22.0 117 27.5 19.0 145 THUMB DIVIDE 7980 23.3 17.0 137 22.3 21.1 106 TWO OCEAN PLATEAU 9360 35.9 26.4 136 31.1 31.0 100 WHISKEY CREEK 6800 -M 17.2 * -M 21.8 * WHITE MILL 8700 27.6 24.8 111 24.6 28.2 87 WOLVERINE 7650 12.5 11.6 108 12.6 12.6 100 ----- ----- Basin wide percent of average 121 111 WIND RIVER BURROUGHS CREEK 8750 16.7 14.9 112 18.0 16.4 110 COLD SPRINGS 9630 8.8 8.3 106 11.2 10.4 108 DEER PARK 9700 16.2 -M * 21.4 -M * HOBBS PARK 10100 16.7 14.8 113 15.4 13.9 111 LITTLE WARM 9620 14.0 11.4 123 15.3 13.1 117 SOUTH PASS 9040 17.2 16.2 106 18.2 16.8 108 ST. LAWRENCE ALT 8620 6.4 7.5 85 9.7 10.0 97 TOGWOTEE PASS 9580 -M 24.8 * 28.1 28.6 98 TOWNSEND CREEK 8700 9.1 9.7 94 12.1 12.2 99 ----- ----- Basin wide percent of average 107 105 BIGHORN BASIN BALD MTN. 9375 19.4 20.2 96 18.0 17.1 105 BEAR TRAP MEADOW 7900 5.2 7.1 73 9.3 8.0 116 BLACKWATER 9780 30.0 22.0 136 24.5 17.8 138 BONE SPRINGS DIV 9350 15.0 16.2 93 15.5 14.8 105 EVENING STAR 9200 32.7 26.8 122 33.9 22.3 152 GRAVE SPRINGS 8550 8.0 9.4 85 10.8 9.4 115 KIRWIN 9550 12.2 9.8 124 13.9 10.6 131 MARQUETTE 8760 7.8 8.0 98 8.4 9.3 90 MIDDLE POWDER 7760 10.4 12.0 87 15.2 11.5 132 OWL CREEK 8975 5.9 4.5 131 6.2 6.1 102 POWDER RIVER PASS 9480 11.6 10.7 108 15.0 11.3 133 SHELL CREEK 9580 16.4 14.8 111 15.2 12.9 118 SYLVAN LAKE 8420 25.8 22.0 117 27.5 19.0 145 SYLVAN ROAD 8120 17.2 12.5 138 19.4 15.9 122 TIMBER CREEK 7950 4.7 6.2 76 6.5 6.8 96 YOUNTS PEAK 8350 21.4 17.1 125 18.8 16.4 115 ----- ----- Basin wide percent of average 111 123 SHOSHONE RIVER BLACKWATER 9780 30.0 22.0 136 24.5 17.8 138 EVENING STAR 9200 32.7 26.8 122 33.9 22.3 152 KIRWIN 9550 12.2 9.8 124 13.9 10.6 131 MARQUETTE 8760 7.8 8.0 98 8.4 9.3 90 SYLVAN LAKE 8420 25.8 22.0 117 27.5 19.0 145 SYLVAN ROAD 8120 17.2 12.5 138 19.4 15.9 122 YOUNTS PEAK 8350 21.4 17.1 125 18.8 16.4 115 ----- ----- Basin wide percent of average 124 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.2 7.1 73 9.3 8.0 116 BIG GOOSE 7990 6.3 -M * 9.6 -M * BONE SPRINGS DIV 9350 15.0 16.2 93 15.5 14.8 105 BURGESS JUNCTION 7880 8.5 11.6 73 10.3 11.2 92 CLOUD PEAK RESERVOIR 9860 14.5 14.6 99 12.7 13.0 98 DOME LAKE 8880 -M 13.6 * 10.8 12.9 84 GRAVE SPRINGS 8550 8.0 9.4 85 10.8 9.4 115 HANSEN SAWMILL 8760 4.2 7.0 60 8.0 7.7 104 MIDDLE POWDER 7760 10.4 12.0 87 15.2 11.5 132 POWDER RIVER PASS 9480 11.6 10.7 108 15.0 11.3 133 SUCKER CREEK 8880 9.8 12.0 82 12.4 12.8 97 TIE CREEK 6870 2.1 -M * 8.3 10.7 78 ----- ----- Basin wide percent of average 87 104 BELLE FOURCHE BLIND PARK 6890 6.6 10.9 61 15.3 9.8 156 NORTH RAPID CREEK 6130 5.2 -M * 12.4 -M * WARREN PEAK 6520 9.9 10.9 91 14.5 7.8 186 ----- ----- Basin wide percent of average 76 169 UPPER N. PLATTE RIVER COLUMBINE 9400 19.1 24.6 78 21.0 24.1 87 DIVIDE PEAK 8800 17.8 20.8 86 23.1 22.4 103 ELK RIVER 8700 15.4 19.7 78 20.8 18.8 111 JOE WRIGHT 10120 19.6 21.7 90 25.7 24.5 105 NORTH FRENCH CREEK 10100 28.5 25.1 114 28.2 23.1 122 OLD BATTLE 10000 27.6 31.6 87 34.2 29.6 116 SOUTH BRUSH CREEK 8400 11.3 13.0 87 18.9 16.0 118 TOWER 10500 42.4 44.7 95 37.7 35.6 106 WEBBER SPRINGS 9200 18.3 27.7 66 25.1 24.8 101 WILLOW CREEK PASS 9540 11.4 11.7 97 11.3 12.3 92 ----- ----- Basin wide percent of average 88 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.5 25.7 60 21.5 19.0 113 CASPER MTN. 7900 10.0 16.1 62 15.5 13.7 113 DEADMAN HILL 10220 15.5 16.3 95 16.7 16.3 102 DEER PARK 9700 16.2 -M * 21.4 -M * LAPRELE CREEK 8320 -M 10.4 * 13.9 11.5 121 RENO HILL 8400 13.0 14.0 93 17.2 18.8 91 ROACH 9700 15.7 17.1 92 18.6 20.7 90 SAND LAKE 10080 33.4 32.5 103 27.7 19.9 139 SOUTH PASS 9040 17.2 16.2 106 18.2 16.8 108 WINDY PEAK 7840 6.3 8.6 73 12.4 9.3 133 ----- ----- Basin wide percent of average 86 111 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.0 11.2 98 16.5 15.0 110 DIVIDE PEAK 8800 17.8 20.8 86 23.1 22.4 103 OLD BATTLE 10000 27.6 31.6 87 34.2 29.6 116 SANDSTONE RS 8150 11.3 14.8 76 19.5 18.3 107 WHISKEY PARK 8950 25.4 28.5 89 28.6 27.6 104 ----- ----- Basin wide percent of average 87 108 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.0 14.5 110 15.2 16.4 93 BLIND BULL SUM 8650 -M 29.3 * 21.8 24.3 90 EAST RIM DIVIDE 7930 13.6 13.9 98 13.8 15.3 90 ELKHART PARK G.S. 9400 13.5 13.7 99 14.1 16.1 88 GROS VENTRE SUMMIT 8775 15.5 15.6 99 15.2 16.1 94 KENDALL R.S. 7740 14.8 14.6 101 15.8 15.7 101 LOOMIS PARK 8240 -M 17.4 * 19.9 19.1 104 NEW FORK LAKE 8340 12.2 11.2 109 11.5 14.6 79 SNIDER BASIN 8250 16.1 14.7 110 16.6 15.3 108 SPRING CREEK DIVIDE 9000 29.1 27.9 104 27.3 27.7 99 TRIPLE PEAK 8500 28.7 25.5 113 28.6 31.3 91 ----- ----- Basin wide percent of average 105 94 LOWER GREEN RIVER HAMS FORK 7840 13.2 12.2 108 11.0 13.5 81 HEWINTA 9500 11.3 11.2 101 13.9 12.8 109 HICKERSON PARK 9150 6.0 6.7 90 9.1 9.3 98 HOLE-IN-ROCK 9150 6.0 6.3 95 -M 9.3 * INDIAN CREEK 9425 28.8 28.5 101 24.0 26.2 92 KELLEY R.S. 8180 16.9 17.1 99 18.4 19.0 97 STEEL CREEK PARK 10100 14.1 16.2 87 16.0 12.6 127 ----- ----- Basin wide percent of average 98 99 UPPER BEAR RIVER BUG LAKE 7950 21.4 20.9 102 19.1 19.2 99 HAYDEN FORK 9400 14.9 16.3 91 19.8 18.7 106 KELLEY R.S. 8180 16.9 17.1 99 18.4 19.0 97 LILY LAKE 9050 12.4 13.1 95 17.6 14.5 121 MONTE CRISTO 8960 25.3 29.3 86 25.6 25.2 102 SALT RIVER SUMMIT 7600 15.9 14.3 111 18.2 17.1 106 TRIAL LAKE 9960 21.0 24.8 85 21.5 23.6 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.