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 WEDNESDAY: MARCH 31 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.6 17.7 133 27.3 22.7 120 COTTONWOOD CREEK 7600 24.9 24.3 102 27.6 25.6 108 GRANITE CREEK 6770 21.5 18.7 115 22.9 23.9 96 GRASSY LAKE 7265 43.4 36.1 120 40.7 37.9 107 GROS VENTRE SUMMIT 8775 15.8 15.7 101 15.2 16.2 94 LEWIS LAKE DIVIDE 7860 40.8 35.5 115 39.8 38.5 103 PHILLIPS BENCH 8200 32.4 29.3 111 31.6 30.5 104 SALT RIVER SUMMIT 7600 16.1 14.4 112 18.3 17.2 106 SNAKE RIVER STATION 6920 22.6 18.7 121 25.7 26.6 97 SPRING CREEK DIVIDE 9000 29.2 28.2 104 27.7 28.0 99 THUMB DIVIDE 7980 -M 17.1 * -M 21.2 * TOGWOTEE PASS 9580 -M 25.1 * 28.4 28.9 98 TWO OCEAN PLATEAU 9360 36.4 26.7 136 31.3 31.3 100 WILLOW CREEK 8450 33.4 30.4 110 37.7 32.8 115 ----- ----- Basin wide percent of average 115 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 26.3 23.7 111 23.3 18.1 129 BLACK BEAR 7950 50.5 38.3 132 -M 41.1 * CANYON 7940 18.1 13.0 139 19.1 14.3 134 FISHER CREEK 9100 40.1 35.9 112 36.7 36.9 99 MADISON PLATEAU 7750 -M 24.7 * 31.6 26.5 119 NORTHEAST ENTRANCE 7350 11.7 9.2 127 14.0 11.8 119 PARKER PEAK 9400 23.3 21.7 107 -M 15.6 * SYLVAN LAKE 8420 26.1 22.2 118 27.7 19.2 144 THUMB DIVIDE 7980 -M 17.1 * -M 21.2 * TWO OCEAN PLATEAU 9360 36.4 26.7 136 31.3 31.3 100 WHISKEY CREEK 6800 20.9 17.4 120 23.9 22.1 108 WHITE MILL 8700 27.8 25.0 111 24.7 28.5 87 WOLVERINE 7650 12.4 11.7 106 12.6 12.7 99 ----- ----- Basin wide percent of average 120 111 WIND RIVER BURROUGHS CREEK 8750 16.7 15.0 111 18.0 16.6 108 COLD SPRINGS 9630 9.3 8.4 111 11.3 10.5 108 DEER PARK 9700 16.2 -M * 21.4 -M * HOBBS PARK 10100 16.8 15.0 112 15.6 14.1 111 LITTLE WARM 9620 14.2 11.5 123 15.4 13.2 117 SOUTH PASS 9040 17.4 16.3 107 18.3 17.0 108 ST. LAWRENCE ALT 8620 6.5 7.6 86 9.7 10.1 96 TOGWOTEE PASS 9580 -M 25.1 * 28.4 28.9 98 TOWNSEND CREEK 8700 9.3 9.8 95 12.2 12.4 98 ----- ----- Basin wide percent of average 108 105 BIGHORN BASIN BALD MTN. 9375 19.4 20.4 95 18.0 17.3 104 BEAR TRAP MEADOW 7900 4.4 7.2 61 9.3 8.1 115 BLACKWATER 9780 30.7 22.3 138 25.0 18.0 139 BONE SPRINGS DIV 9350 15.4 16.4 94 15.8 15.0 105 EVENING STAR 9200 33.2 27.1 123 34.3 22.6 152 GRAVE SPRINGS 8550 8.1 9.5 85 10.9 9.5 115 KIRWIN 9550 12.2 9.9 123 14.1 10.7 132 MARQUETTE 8760 8.0 8.1 99 8.5 9.4 90 MIDDLE POWDER 7760 10.5 12.1 87 15.2 11.7 130 OWL CREEK 8975 6.1 4.6 133 6.4 6.2 103 POWDER RIVER PASS 9480 11.6 10.8 107 15.1 11.4 132 SHELL CREEK 9580 16.5 14.9 111 15.2 13.0 117 SYLVAN LAKE 8420 26.1 22.2 118 27.7 19.2 144 SYLVAN ROAD 8120 17.2 12.5 138 19.6 16.1 122 TIMBER CREEK 7950 4.8 6.3 76 6.5 6.9 94 YOUNTS PEAK 8350 21.5 17.2 125 19.2 16.6 116 ----- ----- Basin wide percent of average 111 123 SHOSHONE RIVER BLACKWATER 9780 30.7 22.3 138 25.0 18.0 139 EVENING STAR 9200 33.2 27.1 123 34.3 22.6 152 KIRWIN 9550 12.2 9.9 123 14.1 10.7 132 MARQUETTE 8760 8.0 8.1 99 8.5 9.4 90 SYLVAN LAKE 8420 26.1 22.2 118 27.7 19.2 144 SYLVAN ROAD 8120 17.2 12.5 138 19.6 16.1 122 YOUNTS PEAK 8350 21.5 17.2 125 19.2 16.6 116 ----- ----- Basin wide percent of average 125 132 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.4 7.2 61 9.3 8.1 115 BIG GOOSE 7990 6.4 -M * 9.6 -M * BONE SPRINGS DIV 9350 15.4 16.4 94 15.8 15.0 105 BURGESS JUNCTION 7880 8.7 11.7 74 10.4 11.4 91 CLOUD PEAK RESERVOIR 9860 14.6 14.8 99 13.2 13.2 100 DOME LAKE 8880 -M 13.7 * 10.8 13.1 82 GRAVE SPRINGS 8550 8.1 9.5 85 10.9 9.5 115 HANSEN SAWMILL 8760 4.1 7.1 58 8.0 7.8 103 MIDDLE POWDER 7760 10.5 12.1 87 15.2 11.7 130 POWDER RIVER PASS 9480 11.6 10.8 107 15.1 11.4 132 SUCKER CREEK 8880 10.3 12.1 85 12.7 13.0 98 TIE CREEK 6870 2.0 -M * 8.3 10.9 76 ----- ----- Basin wide percent of average 86 104 BELLE FOURCHE BLIND PARK 6890 6.5 11.0 59 15.5 9.9 157 NORTH RAPID CREEK 6130 5.1 -M * 12.5 -M * WARREN PEAK 6520 9.8 11.0 89 14.5 7.9 184 ----- ----- Basin wide percent of average 74 169 UPPER N. PLATTE RIVER COLUMBINE 9400 18.9 24.8 76 21.5 24.4 88 DIVIDE PEAK 8800 17.7 21.1 84 23.4 22.7 103 ELK RIVER 8700 15.1 19.9 76 21.2 19.1 111 JOE WRIGHT 10120 19.4 22.0 88 25.8 24.8 104 NORTH FRENCH CREEK 10100 29.1 25.4 115 28.1 23.4 120 OLD BATTLE 10000 27.8 32.0 87 34.5 30.0 115 SOUTH BRUSH CREEK 8400 11.4 13.3 86 18.9 16.2 117 TOWER 10500 42.5 45.2 94 37.7 36.0 105 WEBBER SPRINGS 9200 18.3 28.1 65 25.3 25.1 101 WILLOW CREEK PASS 9540 11.3 11.9 95 11.6 12.5 93 ----- ----- Basin wide percent of average 87 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.6 26.2 60 21.6 19.3 112 CASPER MTN. 7900 10.0 16.4 61 15.7 13.9 113 DEADMAN HILL 10220 15.9 16.5 96 16.8 16.6 101 DEER PARK 9700 16.2 -M * 21.4 -M * LAPRELE CREEK 8320 -M 10.5 * 14.0 11.7 120 RENO HILL 8400 12.7 14.3 89 17.5 19.1 92 ROACH 9700 15.2 17.3 88 18.6 21.0 89 SAND LAKE 10080 33.6 32.9 102 27.8 20.2 138 SOUTH PASS 9040 17.4 16.3 107 18.3 17.0 108 WINDY PEAK 7840 6.3 8.7 72 12.7 9.4 135 ----- ----- Basin wide percent of average 85 110 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.2 11.3 90 16.5 15.2 109 DIVIDE PEAK 8800 17.7 21.1 84 23.4 22.7 103 OLD BATTLE 10000 27.8 32.0 87 34.5 30.0 115 SANDSTONE RS 8150 11.2 14.9 75 19.6 18.5 106 WHISKEY PARK 8950 25.3 28.8 88 28.6 28.0 102 ----- ----- Basin wide percent of average 85 107 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.3 14.6 112 15.3 16.5 93 BLIND BULL SUM 8650 27.4 29.6 93 21.9 24.5 89 EAST RIM DIVIDE 7930 13.7 14.0 98 13.9 15.4 90 ELKHART PARK G.S. 9400 13.7 13.8 99 14.2 16.2 88 GROS VENTRE SUMMIT 8775 15.8 15.7 101 15.2 16.2 94 KENDALL R.S. 7740 14.9 14.7 101 15.9 15.8 101 LOOMIS PARK 8240 -M 17.5 * 19.9 19.2 104 NEW FORK LAKE 8340 12.7 11.3 112 11.7 14.7 80 SNIDER BASIN 8250 16.0 14.8 108 16.7 15.4 108 SPRING CREEK DIVIDE 9000 29.2 28.2 104 27.7 28.0 99 TRIPLE PEAK 8500 29.1 25.8 113 29.5 31.6 93 ----- ----- Basin wide percent of average 103 95 LOWER GREEN RIVER HAMS FORK 7840 13.3 12.3 108 11.0 13.6 81 HEWINTA 9500 12.3 11.4 108 13.8 13.0 106 HICKERSON PARK 9150 5.3 6.8 78 9.1 9.4 97 HOLE-IN-ROCK 9150 5.8 6.4 91 -M 9.4 * INDIAN CREEK 9425 29.1 28.8 101 24.2 26.5 91 KELLEY R.S. 8180 16.9 17.2 98 18.4 19.1 96 STEEL CREEK PARK 10100 14.1 16.5 85 16.0 12.7 126 ----- ----- Basin wide percent of average 97 98 UPPER BEAR RIVER BUG LAKE 7950 21.4 21.2 101 19.3 19.5 99 HAYDEN FORK 9400 14.4 16.4 88 20.0 19.0 105 KELLEY R.S. 8180 16.9 17.2 98 18.4 19.1 96 LILY LAKE 9050 11.9 13.3 89 17.5 14.7 119 MONTE CRISTO 8960 25.3 29.7 85 25.6 25.5 100 SALT RIVER SUMMIT 7600 16.1 14.4 112 18.3 17.2 106 TRIAL LAKE 9960 21.0 24.9 84 21.5 23.9 90 ----- ----- Basin wide percent of average 93 101 ----------------------------------------------------------------------------- -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.