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 THURSDAY: MARCH 25 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.3 17.3 135 26.7 22.2 120 COTTONWOOD CREEK 7600 24.1 23.3 103 26.7 24.9 107 GRANITE CREEK 6770 21.1 18.1 117 22.6 23.3 97 GRASSY LAKE 7265 41.7 34.9 119 39.8 36.8 108 GROS VENTRE SUMMIT 8775 15.2 15.2 100 14.9 15.8 94 LEWIS LAKE DIVIDE 7860 39.8 34.5 115 39.1 37.4 105 PHILLIPS BENCH 8200 31.6 28.4 111 30.9 29.6 104 SALT RIVER SUMMIT 7600 15.4 14.0 110 18.0 16.8 107 SNAKE RIVER STATION 6920 22.0 18.3 120 25.1 25.8 97 SPRING CREEK DIVIDE 9000 28.4 27.3 104 26.9 27.2 99 THUMB DIVIDE 7980 -M 16.6 * -M 20.7 * TOGWOTEE PASS 9580 -M 24.3 * 27.8 28.0 99 TWO OCEAN PLATEAU 9360 35.4 25.9 137 30.9 30.6 101 WILLOW CREEK 8450 33.2 29.6 112 36.9 31.9 116 ----- ----- Basin wide percent of average 115 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.6 23.0 111 23.0 17.5 131 BLACK BEAR 7950 48.8 37.1 132 -M 39.6 * CANYON 7940 17.6 12.6 140 18.4 13.9 132 FISHER CREEK 9100 39.1 34.9 112 35.9 35.7 101 MADISON PLATEAU 7750 -M 23.9 * 30.9 25.6 121 NORTHEAST ENTRANCE 7350 11.6 9.0 129 13.9 11.5 121 PARKER PEAK 9400 22.8 21.1 108 -M 15.1 * SYLVAN LAKE 8420 25.2 21.5 117 26.8 18.6 144 THUMB DIVIDE 7980 -M 16.6 * -M 20.7 * TWO OCEAN PLATEAU 9360 35.4 25.9 137 30.9 30.6 101 WHISKEY CREEK 6800 20.2 16.9 120 23.5 21.3 110 WHITE MILL 8700 27.2 24.4 111 24.4 27.6 88 WOLVERINE 7650 12.5 11.4 110 12.4 12.4 100 ----- ----- Basin wide percent of average 120 112 WIND RIVER BURROUGHS CREEK 8750 16.5 14.7 112 17.8 16.1 111 COLD SPRINGS 9630 9.1 8.1 112 11.1 10.1 110 DEER PARK 9700 15.9 -M * 20.9 -M * HOBBS PARK 10100 16.5 14.4 115 14.7 13.5 109 LITTLE WARM 9620 13.7 11.1 123 14.8 12.7 117 SOUTH PASS 9040 16.9 15.9 106 17.9 16.4 109 ST. LAWRENCE ALT 8620 6.5 7.4 88 9.6 9.7 99 TOGWOTEE PASS 9580 -M 24.3 * 27.8 28.0 99 TOWNSEND CREEK 8700 9.0 9.5 95 11.9 11.9 100 ----- ----- Basin wide percent of average 109 106 BIGHORN BASIN BALD MTN. 9375 19.1 19.8 96 17.8 16.7 107 BEAR TRAP MEADOW 7900 5.6 6.9 81 9.1 7.8 117 BLACKWATER 9780 29.3 21.5 136 24.1 17.4 139 BONE SPRINGS DIV 9350 14.8 15.8 94 15.3 14.3 107 EVENING STAR 9200 32.2 26.2 123 33.4 21.9 153 GRAVE SPRINGS 8550 7.9 9.1 87 10.6 9.1 116 KIRWIN 9550 12.1 9.6 126 13.8 10.3 134 MARQUETTE 8760 8.0 7.8 103 8.8 9.0 98 MIDDLE POWDER 7760 10.2 11.7 87 15.0 11.2 134 OWL CREEK 8975 6.0 4.4 136 6.6 5.9 112 POWDER RIVER PASS 9480 11.7 10.5 111 14.7 11.0 134 SHELL CREEK 9580 15.9 14.5 110 14.7 12.5 118 SYLVAN LAKE 8420 25.2 21.5 117 26.8 18.6 144 SYLVAN ROAD 8120 16.9 12.4 136 18.9 15.6 121 TIMBER CREEK 7950 4.8 6.0 80 6.4 6.6 97 YOUNTS PEAK 8350 20.9 16.8 124 18.8 16.1 117 ----- ----- Basin wide percent of average 112 125 SHOSHONE RIVER BLACKWATER 9780 29.3 21.5 136 24.1 17.4 139 EVENING STAR 9200 32.2 26.2 123 33.4 21.9 153 KIRWIN 9550 12.1 9.6 126 13.8 10.3 134 MARQUETTE 8760 8.0 7.8 103 8.8 9.0 98 SYLVAN LAKE 8420 25.2 21.5 117 26.8 18.6 144 SYLVAN ROAD 8120 16.9 12.4 136 18.9 15.6 121 YOUNTS PEAK 8350 20.9 16.8 124 18.8 16.1 117 ----- ----- Basin wide percent of average 125 133 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.6 6.9 81 9.1 7.8 117 BIG GOOSE 7990 6.1 -M * 9.3 -M * BONE SPRINGS DIV 9350 14.8 15.8 94 15.3 14.3 107 BURGESS JUNCTION 7880 8.3 11.3 73 10.0 10.8 93 CLOUD PEAK RESERVOIR 9860 14.3 14.1 101 12.7 12.6 101 DOME LAKE 8880 -M 13.3 * 10.2 12.6 81 GRAVE SPRINGS 8550 7.9 9.1 87 10.6 9.1 116 HANSEN SAWMILL 8760 5.0 6.9 72 7.8 7.5 104 MIDDLE POWDER 7760 10.2 11.7 87 15.0 11.2 134 POWDER RIVER PASS 9480 11.7 10.5 111 14.7 11.0 134 SUCKER CREEK 8880 10.1 11.7 86 12.5 12.5 100 TIE CREEK 6870 -M -M * -M 10.4 * ----- ----- Basin wide percent of average 90 108 BELLE FOURCHE BLIND PARK 6890 7.1 10.7 66 14.9 9.5 157 NORTH RAPID CREEK 6130 5.7 -M * 12.5 -M * WARREN PEAK 6520 10.2 10.7 95 14.0 7.6 184 ----- ----- Basin wide percent of average 81 169 UPPER N. PLATTE RIVER COLUMBINE 9400 19.4 24.3 80 20.8 23.6 88 DIVIDE PEAK 8800 17.8 20.2 88 22.6 21.9 103 ELK RIVER 8700 15.9 19.3 82 20.5 18.4 111 JOE WRIGHT 10120 19.5 21.1 92 24.9 23.9 104 NORTH FRENCH CREEK 10100 27.5 24.5 112 27.2 22.5 121 OLD BATTLE 10000 26.3 30.8 85 33.2 28.9 115 SOUTH BRUSH CREEK 8400 11.2 12.5 90 18.1 15.5 117 TOWER 10500 40.9 43.7 94 36.7 34.8 105 WEBBER SPRINGS 9200 17.7 26.9 66 24.2 24.2 100 WILLOW CREEK PASS 9540 11.1 11.4 97 11.4 12.0 95 ----- ----- Basin wide percent of average 88 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.9 24.8 64 20.8 18.5 112 CASPER MTN. 7900 10.4 15.5 67 15.6 13.3 117 DEADMAN HILL 10220 15.3 15.9 96 16.6 15.9 104 DEER PARK 9700 15.9 -M * 20.9 -M * LAPRELE CREEK 8320 -M 10.1 * 13.8 11.2 123 RENO HILL 8400 12.6 13.5 93 17.4 18.2 96 ROACH 9700 15.1 16.7 90 18.2 20.2 90 SAND LAKE 10080 32.3 31.7 102 26.6 19.4 137 SOUTH PASS 9040 16.9 15.9 106 17.9 16.4 109 WINDY PEAK 7840 6.3 8.3 76 12.1 9.0 134 ----- ----- Basin wide percent of average 88 112 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.0 11.1 99 16.1 14.7 110 DIVIDE PEAK 8800 17.8 20.2 88 22.6 21.9 103 OLD BATTLE 10000 26.3 30.8 85 33.2 28.9 115 SANDSTONE RS 8150 10.8 14.4 75 18.9 17.9 106 WHISKEY PARK 8950 24.5 27.9 88 27.6 26.9 103 ----- ----- Basin wide percent of average 87 107 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.7 14.2 111 14.8 16.1 92 BLIND BULL SUM 8650 28.1 28.7 98 21.5 23.8 90 EAST RIM DIVIDE 7930 13.3 13.7 97 13.5 15.1 89 ELKHART PARK G.S. 9400 13.4 13.4 100 13.9 15.8 88 GROS VENTRE SUMMIT 8775 15.2 15.2 100 14.9 15.8 94 KENDALL R.S. 7740 14.7 14.6 101 15.5 15.4 101 LOOMIS PARK 8240 -M 17.1 * 19.4 18.7 104 NEW FORK LAKE 8340 12.3 11.1 111 11.7 14.4 81 SNIDER BASIN 8250 15.7 14.5 108 16.2 15.1 107 SPRING CREEK DIVIDE 9000 28.4 27.3 104 26.9 27.2 99 TRIPLE PEAK 8500 27.8 25.0 111 28.3 30.8 92 ----- ----- Basin wide percent of average 104 94 LOWER GREEN RIVER HAMS FORK 7840 13.3 12.1 110 10.8 13.3 81 HEWINTA 9500 11.1 10.9 102 13.5 12.4 109 HICKERSON PARK 9150 6.3 6.4 98 9.0 9.0 100 HOLE-IN-ROCK 9150 5.5 6.1 90 -M 9.0 * INDIAN CREEK 9425 28.2 27.8 101 23.8 25.7 93 KELLEY R.S. 8180 16.5 16.7 99 18.0 18.7 96 STEEL CREEK PARK 10100 13.8 15.7 88 15.7 12.2 129 ----- ----- Basin wide percent of average 99 99 UPPER BEAR RIVER BUG LAKE 7950 21.2 20.3 104 18.8 18.8 100 HAYDEN FORK 9400 14.5 16.0 91 19.8 18.2 109 KELLEY R.S. 8180 16.5 16.7 99 18.0 18.7 96 LILY LAKE 9050 12.5 12.7 98 17.3 14.1 123 MONTE CRISTO 8960 25.0 28.5 88 25.1 24.6 102 SALT RIVER SUMMIT 7600 15.4 14.0 110 18.0 16.8 107 TRIAL LAKE 9960 20.4 24.5 83 21.0 23.0 91 ----- ----- Basin wide percent of average 95 103 ----------------------------------------------------------------------------- -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.