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 TUESDAY: MARCH 23 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.0 17.2 140 26.7 22.0 121 COTTONWOOD CREEK 7600 24.3 23.0 106 26.7 24.7 108 GRANITE CREEK 6770 21.2 17.9 118 22.6 23.2 97 GRASSY LAKE 7265 41.5 34.6 120 39.6 36.5 108 GROS VENTRE SUMMIT 8775 15.3 15.1 101 14.8 15.7 94 LEWIS LAKE DIVIDE 7860 40.2 34.2 118 39.1 37.0 106 PHILLIPS BENCH 8200 31.6 28.1 112 30.9 29.3 105 SALT RIVER SUMMIT 7600 15.6 13.9 112 17.9 16.7 107 SNAKE RIVER STATION 6920 21.8 18.2 120 25.1 25.6 98 SPRING CREEK DIVIDE 9000 28.3 27.0 105 26.8 26.9 100 THUMB DIVIDE 7980 -M 16.5 * -M 20.6 * TOGWOTEE PASS 9580 -M 24.0 * 27.8 27.8 100 TWO OCEAN PLATEAU 9360 35.4 25.7 138 -M 30.3 * WILLOW CREEK 8450 32.5 29.4 111 36.7 31.7 116 ----- ----- Basin wide percent of average 117 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.7 22.7 113 23.0 17.3 133 BLACK BEAR 7950 49.0 36.8 133 -M 39.1 * CANYON 7940 17.7 12.5 142 18.4 13.7 134 FISHER CREEK 9100 39.3 34.5 114 -M 35.2 * MADISON PLATEAU 7750 -M 23.7 * -M 25.3 * NORTHEAST ENTRANCE 7350 12.0 9.0 133 13.9 11.4 122 PARKER PEAK 9400 22.8 20.8 110 -M 14.9 * SYLVAN LAKE 8420 25.2 21.3 118 26.8 18.4 146 THUMB DIVIDE 7980 -M 16.5 * -M 20.6 * TWO OCEAN PLATEAU 9360 35.4 25.7 138 -M 30.3 * WHISKEY CREEK 6800 20.2 16.7 121 23.5 21.0 112 WHITE MILL 8700 27.2 24.3 112 24.3 27.3 89 WOLVERINE 7650 12.7 11.3 112 12.3 12.3 100 ----- ----- Basin wide percent of average 122 117 WIND RIVER BURROUGHS CREEK 8750 16.6 14.6 114 17.8 15.9 112 COLD SPRINGS 9630 9.0 8.0 112 11.1 10.0 111 DEER PARK 9700 16.0 -M * 20.8 -M * HOBBS PARK 10100 16.5 14.3 115 14.7 13.3 111 LITTLE WARM 9620 13.4 11.0 122 14.8 12.6 117 SOUTH PASS 9040 16.9 15.8 107 17.9 16.1 111 ST. LAWRENCE ALT 8620 6.5 7.3 89 9.5 9.6 99 TOGWOTEE PASS 9580 -M 24.0 * 27.8 27.8 100 TOWNSEND CREEK 8700 9.0 9.4 96 11.9 11.7 102 ----- ----- Basin wide percent of average 109 107 BIGHORN BASIN BALD MTN. 9375 19.1 19.6 97 17.8 16.4 109 BEAR TRAP MEADOW 7900 6.1 6.8 90 9.1 7.6 120 BLACKWATER 9780 29.3 21.2 138 24.0 17.3 139 BONE SPRINGS DIV 9350 15.1 15.7 96 15.2 14.1 108 EVENING STAR 9200 32.4 25.9 125 33.3 21.6 154 GRAVE SPRINGS 8550 8.0 9.0 89 10.6 9.0 118 KIRWIN 9550 12.2 9.5 128 13.8 10.2 135 MARQUETTE 8760 8.0 7.7 104 8.8 8.8 100 MIDDLE POWDER 7760 10.2 11.5 89 15.0 11.0 136 OWL CREEK 8975 6.0 4.3 140 6.6 5.8 114 POWDER RIVER PASS 9480 12.3 10.4 118 14.8 10.9 136 SHELL CREEK 9580 15.9 14.4 110 14.7 12.4 119 SYLVAN LAKE 8420 25.2 21.3 118 26.8 18.4 146 SYLVAN ROAD 8120 16.7 12.4 135 18.9 15.4 123 TIMBER CREEK 7950 4.8 5.9 81 6.4 6.4 100 YOUNTS PEAK 8350 20.9 16.6 126 18.8 15.9 118 ----- ----- Basin wide percent of average 114 127 SHOSHONE RIVER BLACKWATER 9780 29.3 21.2 138 24.0 17.3 139 EVENING STAR 9200 32.4 25.9 125 33.3 21.6 154 KIRWIN 9550 12.2 9.5 128 13.8 10.2 135 MARQUETTE 8760 8.0 7.7 104 8.8 8.8 100 SYLVAN LAKE 8420 25.2 21.3 118 26.8 18.4 146 SYLVAN ROAD 8120 16.7 12.4 135 18.9 15.4 123 YOUNTS PEAK 8350 20.9 16.6 126 18.8 15.9 118 ----- ----- Basin wide percent of average 126 134 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.1 6.8 90 9.1 7.6 120 BIG GOOSE 7990 6.1 -M * 9.3 -M * BONE SPRINGS DIV 9350 15.1 15.7 96 15.2 14.1 108 BURGESS JUNCTION 7880 8.3 11.2 74 10.0 10.7 93 CLOUD PEAK RESERVOIR 9860 14.2 13.9 102 12.7 12.4 102 DOME LAKE 8880 -M 13.1 * 10.4 12.4 84 GRAVE SPRINGS 8550 8.0 9.0 89 10.6 9.0 118 HANSEN SAWMILL 8760 5.3 6.8 78 7.8 7.3 107 MIDDLE POWDER 7760 10.2 11.5 89 15.0 11.0 136 POWDER RIVER PASS 9480 12.3 10.4 118 14.8 10.9 136 SUCKER CREEK 8880 9.9 11.5 86 12.4 12.3 101 TIE CREEK 6870 3.2 -M * 8.0 10.2 78 ----- ----- Basin wide percent of average 92 107 BELLE FOURCHE BLIND PARK 6890 7.6 10.6 72 14.9 9.3 160 NORTH RAPID CREEK 6130 5.7 -M * 12.6 -M * WARREN PEAK 6520 10.4 10.6 98 14.0 7.5 187 ----- ----- Basin wide percent of average 85 172 UPPER N. PLATTE RIVER COLUMBINE 9400 20.0 24.1 83 20.7 23.3 89 DIVIDE PEAK 8800 17.8 19.9 89 22.6 21.6 105 ELK RIVER 8700 16.5 19.2 86 20.4 18.1 113 JOE WRIGHT 10120 19.7 20.8 95 24.9 23.6 106 NORTH FRENCH CREEK 10100 27.2 24.2 112 27.3 22.2 123 OLD BATTLE 10000 26.3 30.3 87 33.2 28.5 116 SOUTH BRUSH CREEK 8400 11.3 12.2 93 18.1 15.3 118 TOWER 10500 40.8 43.2 94 36.8 34.4 107 WEBBER SPRINGS 9200 17.9 26.5 68 24.1 23.9 101 WILLOW CREEK PASS 9540 11.1 11.2 99 11.3 11.8 96 ----- ----- Basin wide percent of average 90 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.0 24.4 66 20.8 18.3 114 CASPER MTN. 7900 10.5 15.2 69 15.5 13.1 118 DEADMAN HILL 10220 15.2 15.8 96 16.6 15.6 106 DEER PARK 9700 16.0 -M * 20.8 -M * LAPRELE CREEK 8320 -M 10.0 * 13.7 11.0 125 RENO HILL 8400 12.7 13.3 95 17.3 17.9 97 ROACH 9700 15.4 16.4 94 18.2 20.0 91 SAND LAKE 10080 32.1 31.4 102 26.5 19.2 138 SOUTH PASS 9040 16.9 15.8 107 17.9 16.1 111 WINDY PEAK 7840 6.3 8.2 77 12.1 8.8 138 ----- ----- Basin wide percent of average 89 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.5 11.0 105 16.1 14.5 111 DIVIDE PEAK 8800 17.8 19.9 89 22.6 21.6 105 OLD BATTLE 10000 26.3 30.3 87 33.2 28.5 116 SANDSTONE RS 8150 11.3 14.3 79 18.9 17.7 107 WHISKEY PARK 8950 24.5 27.6 89 27.6 26.5 104 ----- ----- Basin wide percent of average 89 109 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.9 14.0 114 14.8 16.0 93 BLIND BULL SUM 8650 28.1 28.4 99 21.5 23.6 91 EAST RIM DIVIDE 7930 13.4 13.6 99 13.5 14.9 91 ELKHART PARK G.S. 9400 13.5 13.3 102 13.9 15.7 89 GROS VENTRE SUMMIT 8775 15.3 15.1 101 14.8 15.7 94 KENDALL R.S. 7740 15.0 14.5 103 15.5 15.3 101 LOOMIS PARK 8240 -M 17.0 * 19.4 18.6 104 NEW FORK LAKE 8340 12.5 11.0 114 11.6 14.2 82 SNIDER BASIN 8250 16.0 14.4 111 16.1 14.9 108 SPRING CREEK DIVIDE 9000 28.3 27.0 105 26.8 26.9 100 TRIPLE PEAK 8500 27.7 24.8 112 28.3 30.6 92 ----- ----- Basin wide percent of average 105 95 LOWER GREEN RIVER HAMS FORK 7840 13.4 12.1 111 10.8 13.2 82 HEWINTA 9500 11.0 10.7 103 13.5 12.3 110 HICKERSON PARK 9150 6.3 6.3 100 9.0 8.8 102 HOLE-IN-ROCK 9150 5.5 6.0 92 -M 8.8 * INDIAN CREEK 9425 28.4 27.5 103 23.7 25.4 93 KELLEY R.S. 8180 16.5 16.6 99 18.0 18.5 97 STEEL CREEK PARK 10100 13.8 15.4 90 15.7 12.1 130 ----- ----- Basin wide percent of average 100 100 UPPER BEAR RIVER BUG LAKE 7950 21.5 20.0 108 18.7 18.5 101 HAYDEN FORK 9400 15.0 15.9 94 19.8 18.0 110 KELLEY R.S. 8180 16.5 16.6 99 18.0 18.5 97 LILY LAKE 9050 12.8 12.6 102 17.3 13.9 124 MONTE CRISTO 8960 25.0 28.0 89 25.0 24.3 103 SALT RIVER SUMMIT 7600 15.6 13.9 112 17.9 16.7 107 TRIAL LAKE 9960 20.5 24.3 84 21.0 22.8 92 ----- ----- Basin wide percent of average 97 104 ----------------------------------------------------------------------------- -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.