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 22 , 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 17.2 137 26.7 21.9 122 COTTONWOOD CREEK 7600 24.3 22.8 107 26.7 24.6 109 GRANITE CREEK 6770 21.1 17.8 119 22.6 23.1 98 GRASSY LAKE 7265 41.2 34.4 120 39.7 36.3 109 GROS VENTRE SUMMIT 8775 15.2 15.0 101 14.8 15.6 95 LEWIS LAKE DIVIDE 7860 39.9 34.0 117 39.0 36.9 106 PHILLIPS BENCH 8200 31.6 28.0 113 30.9 29.1 106 SALT RIVER SUMMIT 7600 15.4 13.8 112 17.9 16.6 108 SNAKE RIVER STATION 6920 21.6 18.2 119 25.1 25.4 99 SPRING CREEK DIVIDE 9000 28.2 26.8 105 26.8 26.8 100 THUMB DIVIDE 7980 22.9 16.4 140 21.5 20.5 105 TOGWOTEE PASS 9580 -M 23.8 * 27.7 27.6 100 TWO OCEAN PLATEAU 9360 35.5 25.6 139 -M 30.2 * WILLOW CREEK 8450 32.7 29.3 112 36.5 31.5 116 ----- ----- Basin wide percent of average 118 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 25.7 22.6 114 23.1 17.2 134 BLACK BEAR 7950 48.6 36.6 133 -M 38.8 * CANYON 7940 17.5 12.4 141 18.4 13.7 134 FISHER CREEK 9100 39.1 34.3 114 -M 35.0 * MADISON PLATEAU 7750 -M 23.6 * -M 25.1 * NORTHEAST ENTRANCE 7350 12.0 9.0 133 14.0 11.4 123 PARKER PEAK 9400 22.5 20.7 109 -M 14.9 * SYLVAN LAKE 8420 25.1 21.2 118 26.8 18.3 146 THUMB DIVIDE 7980 22.9 16.4 140 21.5 20.5 105 TWO OCEAN PLATEAU 9360 35.5 25.6 139 -M 30.2 * WHISKEY CREEK 6800 20.1 16.6 121 23.4 20.8 112 WHITE MILL 8700 27.2 24.2 112 24.4 27.1 90 WOLVERINE 7650 12.7 11.3 112 12.4 12.2 102 ----- ----- Basin wide percent of average 123 116 WIND RIVER BURROUGHS CREEK 8750 16.5 14.5 114 17.7 15.8 112 COLD SPRINGS 9630 8.8 8.0 110 11.0 9.9 111 DEER PARK 9700 15.9 -M * 20.8 -M * HOBBS PARK 10100 16.5 14.2 116 14.7 13.2 111 LITTLE WARM 9620 13.3 10.9 122 14.7 12.5 118 SOUTH PASS 9040 16.9 15.7 108 17.9 16.0 112 ST. LAWRENCE ALT 8620 6.5 7.2 90 9.5 9.5 100 TOGWOTEE PASS 9580 -M 23.8 * 27.7 27.6 100 TOWNSEND CREEK 8700 9.0 9.4 96 11.9 11.6 103 ----- ----- Basin wide percent of average 110 108 BIGHORN BASIN BALD MTN. 9375 19.1 19.5 98 17.8 16.3 109 BEAR TRAP MEADOW 7900 6.3 6.8 93 9.0 7.6 118 BLACKWATER 9780 29.3 21.1 139 24.0 17.2 140 BONE SPRINGS DIV 9350 15.2 15.6 97 15.3 14.0 109 EVENING STAR 9200 32.1 25.8 124 33.4 21.5 155 GRAVE SPRINGS 8550 7.9 9.0 88 10.6 8.9 119 KIRWIN 9550 12.2 9.4 130 13.8 10.1 137 MARQUETTE 8760 8.2 7.6 108 8.8 8.7 101 MIDDLE POWDER 7760 10.3 11.4 90 15.0 11.0 136 OWL CREEK 8975 5.9 4.3 137 6.6 5.8 114 POWDER RIVER PASS 9480 12.3 10.3 119 14.6 10.8 135 SHELL CREEK 9580 15.9 14.3 111 14.7 12.3 120 SYLVAN LAKE 8420 25.1 21.2 118 26.8 18.3 146 SYLVAN ROAD 8120 16.6 12.4 134 18.9 15.4 123 TIMBER CREEK 7950 4.7 5.9 80 6.4 6.4 100 YOUNTS PEAK 8350 20.8 16.5 126 18.8 15.8 119 ----- ----- Basin wide percent of average 115 127 SHOSHONE RIVER BLACKWATER 9780 29.3 21.1 139 24.0 17.2 140 EVENING STAR 9200 32.1 25.8 124 33.4 21.5 155 KIRWIN 9550 12.2 9.4 130 13.8 10.1 137 MARQUETTE 8760 8.2 7.6 108 8.8 8.7 101 SYLVAN LAKE 8420 25.1 21.2 118 26.8 18.3 146 SYLVAN ROAD 8120 16.6 12.4 134 18.9 15.4 123 YOUNTS PEAK 8350 20.8 16.5 126 18.8 15.8 119 ----- ----- Basin wide percent of average 127 135 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.3 6.8 93 9.0 7.6 118 BIG GOOSE 7990 6.1 -M * 9.3 -M * BONE SPRINGS DIV 9350 15.2 15.6 97 15.3 14.0 109 BURGESS JUNCTION 7880 8.3 11.2 74 10.0 10.6 94 CLOUD PEAK RESERVOIR 9860 14.2 13.8 103 12.7 12.3 103 DOME LAKE 8880 -M 13.0 * 10.5 12.3 85 GRAVE SPRINGS 8550 7.9 9.0 88 10.6 8.9 119 HANSEN SAWMILL 8760 5.3 6.7 79 7.8 7.3 107 MIDDLE POWDER 7760 10.3 11.4 90 15.0 11.0 136 POWDER RIVER PASS 9480 12.3 10.3 119 14.6 10.8 135 SUCKER CREEK 8880 9.9 11.4 87 12.4 12.3 101 TIE CREEK 6870 3.5 -M * 8.0 10.1 79 ----- ----- Basin wide percent of average 93 107 BELLE FOURCHE BLIND PARK 6890 7.6 10.5 72 14.9 9.2 162 NORTH RAPID CREEK 6130 5.7 -M * 12.6 -M * WARREN PEAK 6520 10.4 10.5 99 14.0 7.4 189 ----- ----- Basin wide percent of average 86 174 UPPER N. PLATTE RIVER COLUMBINE 9400 20.3 24.0 85 20.8 23.2 90 DIVIDE PEAK 8800 17.7 19.8 89 22.6 21.5 105 ELK RIVER 8700 16.6 19.1 87 20.6 18.0 114 JOE WRIGHT 10120 19.5 20.6 95 25.0 23.5 106 NORTH FRENCH CREEK 10100 26.9 24.0 112 27.1 22.0 123 OLD BATTLE 10000 26.3 30.1 87 33.2 28.4 117 SOUTH BRUSH CREEK 8400 11.3 12.1 93 18.1 15.2 119 TOWER 10500 40.8 42.9 95 36.8 34.2 108 WEBBER SPRINGS 9200 17.9 26.3 68 24.1 23.7 102 WILLOW CREEK PASS 9540 11.1 11.1 100 11.4 11.7 97 ----- ----- Basin wide percent of average 91 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.2 24.2 67 20.8 18.1 115 CASPER MTN. 7900 10.4 15.0 69 15.5 13.0 119 DEADMAN HILL 10220 15.3 15.7 97 16.6 15.5 107 DEER PARK 9700 15.9 -M * 20.8 -M * LAPRELE CREEK 8320 -M 9.9 * 13.8 10.9 127 RENO HILL 8400 12.7 13.2 96 17.4 17.7 98 ROACH 9700 15.2 16.3 93 18.2 19.9 91 SAND LAKE 10080 31.9 31.2 102 26.4 19.1 138 SOUTH PASS 9040 16.9 15.7 108 17.9 16.0 112 WINDY PEAK 7840 6.2 8.1 77 12.2 8.7 140 ----- ----- Basin wide percent of average 90 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.5 11.0 105 16.1 14.4 112 DIVIDE PEAK 8800 17.7 19.8 89 22.6 21.5 105 OLD BATTLE 10000 26.3 30.1 87 33.2 28.4 117 SANDSTONE RS 8150 11.1 14.2 78 18.9 17.6 107 WHISKEY PARK 8950 24.4 27.4 89 27.6 26.4 105 ----- ----- Basin wide percent of average 89 109 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.8 13.9 114 14.8 15.9 93 BLIND BULL SUM 8650 28.1 28.2 100 21.5 23.4 92 EAST RIM DIVIDE 7930 13.3 13.5 99 13.5 14.9 91 ELKHART PARK G.S. 9400 13.4 13.3 101 13.9 15.7 89 GROS VENTRE SUMMIT 8775 15.2 15.0 101 14.8 15.6 95 KENDALL R.S. 7740 15.1 14.5 104 15.5 15.3 101 LOOMIS PARK 8240 -M 17.0 * 19.4 18.5 105 NEW FORK LAKE 8340 12.2 10.9 112 11.6 14.2 82 SNIDER BASIN 8250 16.0 14.4 111 16.1 14.9 108 SPRING CREEK DIVIDE 9000 28.2 26.8 105 26.8 26.8 100 TRIPLE PEAK 8500 27.5 24.7 111 28.2 30.5 92 ----- ----- Basin wide percent of average 105 95 LOWER GREEN RIVER HAMS FORK 7840 13.5 12.1 112 10.8 13.1 82 HEWINTA 9500 10.9 10.6 103 13.5 12.2 111 HICKERSON PARK 9150 6.3 6.3 100 9.0 8.8 102 HOLE-IN-ROCK 9150 5.7 5.9 97 -M 8.8 * INDIAN CREEK 9425 28.3 27.3 104 23.7 25.3 94 KELLEY R.S. 8180 16.5 16.5 100 18.0 18.4 98 STEEL CREEK PARK 10100 13.7 15.2 90 15.7 12.0 131 ----- ----- Basin wide percent of average 101 101 UPPER BEAR RIVER BUG LAKE 7950 21.2 19.9 107 18.7 18.4 102 HAYDEN FORK 9400 15.3 15.9 96 19.7 17.8 111 KELLEY R.S. 8180 16.5 16.5 100 18.0 18.4 98 LILY LAKE 9050 13.1 12.5 105 17.2 13.8 125 MONTE CRISTO 8960 24.8 27.8 89 25.0 24.1 104 SALT RIVER SUMMIT 7600 15.4 13.8 112 17.9 16.6 108 TRIAL LAKE 9960 20.5 24.2 85 21.0 22.6 93 ----- ----- 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.