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: FEBRUARY 24 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.8 15.1 144 23.4 19.4 121 COTTONWOOD CREEK 7600 20.9 17.8 117 23.5 21.4 110 GRANITE CREEK 6770 19.0 14.9 128 20.6 20.4 101 GRASSY LAKE 7265 36.4 29.7 123 35.4 31.4 113 GROS VENTRE SUMMIT 8775 13.7 12.5 110 13.4 13.7 98 LEWIS LAKE DIVIDE 7860 35.5 28.4 125 28.7 31.9 90 PHILLIPS BENCH 8200 28.8 23.4 123 23.8 25.2 94 SALT RIVER SUMMIT 7600 14.0 11.6 121 16.1 14.6 110 SNAKE RIVER STATION 6920 19.3 15.6 124 22.7 22.1 103 SPRING CREEK DIVIDE 9000 24.8 22.4 111 24.2 23.3 104 THUMB DIVIDE 7980 20.6 13.8 149 19.3 18.2 106 TOGWOTEE PASS 9580 -M 20.1 * 25.0 23.9 105 TWO OCEAN PLATEAU 9360 31.9 21.6 148 23.3 26.8 87 WILLOW CREEK 8450 28.5 25.1 114 32.3 27.6 117 ----- ----- Basin wide percent of average 125 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 22.7 19.2 118 20.1 14.6 138 BLACK BEAR 7950 44.6 30.5 146 -M 32.4 * CANYON 7940 16.2 10.3 157 16.5 11.7 141 FISHER CREEK 9100 35.0 29.2 120 -M 29.6 * MADISON PLATEAU 7750 -M 19.9 * 24.4 21.0 116 NORTHEAST ENTRANCE 7350 10.8 7.8 138 12.6 9.9 127 PARKER PEAK 9400 20.4 17.4 117 -M 12.6 * SYLVAN LAKE 8420 22.8 17.9 127 24.7 15.7 157 THUMB DIVIDE 7980 20.6 13.8 149 19.3 18.2 106 TWO OCEAN PLATEAU 9360 31.9 21.6 148 23.3 26.8 87 WHISKEY CREEK 6800 18.6 13.9 134 19.4 17.4 111 WHITE MILL 8700 23.8 20.5 116 21.1 23.0 92 WOLVERINE 7650 13.0 9.7 134 11.6 10.6 109 ----- ----- Basin wide percent of average 132 114 WIND RIVER BURROUGHS CREEK 8750 15.3 12.7 120 16.6 13.5 123 COLD SPRINGS 9630 8.4 6.8 124 10.3 8.1 127 DEER PARK 9700 14.7 -M * 19.4 -M * HOBBS PARK 10100 15.1 11.7 129 13.9 10.8 129 LITTLE WARM 9620 12.0 8.8 136 13.3 10.5 127 SOUTH PASS 9040 15.8 13.5 117 16.9 13.3 127 ST. LAWRENCE ALT 8620 6.4 6.0 107 9.2 7.7 119 TOGWOTEE PASS 9580 -M 20.1 * 25.0 23.9 105 TOWNSEND CREEK 8700 8.7 7.7 113 11.4 9.4 121 ----- ----- Basin wide percent of average 122 120 BIGHORN BASIN BALD MTN. 9375 16.8 16.5 102 15.7 13.7 115 BEAR TRAP MEADOW 7900 5.7 5.7 100 8.0 6.1 131 BLACKWATER 9780 26.5 17.3 153 21.9 14.7 149 BONE SPRINGS DIV 9350 13.4 12.9 104 13.5 11.3 119 EVENING STAR 9200 29.5 21.8 135 28.4 18.3 155 GRAVE SPRINGS 8550 6.4 7.3 88 9.2 7.2 128 KIRWIN 9550 11.1 7.8 142 12.7 8.3 153 MARQUETTE 8760 6.9 6.3 110 7.7 6.9 112 MIDDLE POWDER 7760 7.4 9.3 80 12.7 9.0 141 OWL CREEK 8975 5.5 3.5 157 6.1 4.7 130 POWDER RIVER PASS 9480 10.7 8.5 126 12.7 9.1 140 SHELL CREEK 9580 14.2 12.2 116 13.1 10.3 127 SYLVAN LAKE 8420 22.8 17.9 127 24.7 15.7 157 SYLVAN ROAD 8120 15.3 10.7 143 17.3 13.2 131 TIMBER CREEK 7950 4.6 4.7 98 6.3 4.9 129 YOUNTS PEAK 8350 18.9 14.3 132 16.7 13.4 125 ----- ----- Basin wide percent of average 122 136 SHOSHONE RIVER BLACKWATER 9780 26.5 17.3 153 21.9 14.7 149 EVENING STAR 9200 29.5 21.8 135 28.4 18.3 155 KIRWIN 9550 11.1 7.8 142 12.7 8.3 153 MARQUETTE 8760 6.9 6.3 110 7.7 6.9 112 SYLVAN LAKE 8420 22.8 17.9 127 24.7 15.7 157 SYLVAN ROAD 8120 15.3 10.7 143 17.3 13.2 131 YOUNTS PEAK 8350 18.9 14.3 132 16.7 13.4 125 ----- ----- Basin wide percent of average 136 143 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.7 5.7 100 8.0 6.1 131 BIG GOOSE 7990 4.9 -M * 7.9 -M * BONE SPRINGS DIV 9350 13.4 12.9 104 13.5 11.3 119 BURGESS JUNCTION 7880 7.0 9.3 75 8.8 8.3 106 CLOUD PEAK RESERVOIR 9860 12.3 10.6 116 10.6 9.9 107 DOME LAKE 8880 6.9 10.9 63 9.4 10.1 93 GRAVE SPRINGS 8550 6.4 7.3 88 9.2 7.2 128 HANSEN SAWMILL 8760 4.6 5.5 84 6.8 5.8 117 MIDDLE POWDER 7760 7.4 9.3 80 12.7 9.0 141 POWDER RIVER PASS 9480 10.7 8.5 126 12.7 9.1 140 SUCKER CREEK 8880 8.4 9.3 90 10.7 10.2 105 TIE CREEK 6870 -M -M * -M 8.0 * ----- ----- Basin wide percent of average 93 118 BELLE FOURCHE BLIND PARK 6890 6.2 8.8 70 13.3 7.3 182 NORTH RAPID CREEK 6130 4.7 -M * 11.3 -M * WARREN PEAK 6520 7.7 8.8 88 11.9 6.0 198 ----- ----- Basin wide percent of average 79 189 UPPER N. PLATTE RIVER COLUMBINE 9400 17.8 20.1 89 18.5 19.8 93 DIVIDE PEAK 8800 16.5 16.2 102 21.7 18.2 119 ELK RIVER 8700 16.0 16.0 100 19.4 15.0 129 JOE WRIGHT 10120 17.2 16.8 102 22.8 19.5 117 NORTH FRENCH CREEK 10100 25.3 19.6 129 25.7 18.2 141 OLD BATTLE 10000 24.1 25.2 96 30.8 23.6 131 SOUTH BRUSH CREEK 8400 -M 9.0 * 16.8 12.5 134 TOWER 10500 37.1 36.0 103 33.9 28.9 117 WEBBER SPRINGS 9200 16.3 21.5 76 22.2 20.0 111 WILLOW CREEK PASS 9540 9.9 8.9 111 10.5 9.5 111 ----- ----- Basin wide percent of average 100 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.3 19.2 95 19.3 14.9 130 CASPER MTN. 7900 9.5 11.8 81 14.3 10.4 138 DEADMAN HILL 10220 14.5 13.1 111 14.9 12.5 119 DEER PARK 9700 14.7 -M * 19.4 -M * LAPRELE CREEK 8320 -M 8.1 * 12.6 8.8 143 RENO HILL 8400 11.3 10.3 110 15.8 14.0 113 ROACH 9700 14.4 13.5 107 16.8 16.7 101 SAND LAKE 10080 28.7 25.8 111 24.7 15.9 155 SOUTH PASS 9040 15.8 13.5 117 16.9 13.3 127 WINDY PEAK 7840 5.4 5.9 92 11.3 6.9 164 ----- ----- Basin wide percent of average 104 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 12.3 9.4 131 15.6 12.3 127 DIVIDE PEAK 8800 16.5 16.2 102 21.7 18.2 119 OLD BATTLE 10000 24.1 25.2 96 30.8 23.6 131 SANDSTONE RS 8150 11.8 11.7 101 18.2 15.0 121 WHISKEY PARK 8950 22.9 22.7 101 23.2 22.1 105 ----- ----- Basin wide percent of average 103 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.0 11.6 121 13.0 14.0 93 BLIND BULL SUM 8650 25.6 23.4 109 20.1 20.3 99 EAST RIM DIVIDE 7930 12.4 11.5 108 12.7 13.2 96 ELKHART PARK G.S. 9400 12.2 11.0 111 12.6 13.8 91 GROS VENTRE SUMMIT 8775 13.7 12.5 110 13.4 13.7 98 KENDALL R.S. 7740 14.2 12.0 118 14.4 13.4 107 LOOMIS PARK 8240 -M 14.4 * 18.0 16.3 110 NEW FORK LAKE 8340 11.2 9.5 118 11.0 12.5 88 SNIDER BASIN 8250 14.7 12.3 120 14.5 13.2 110 SPRING CREEK DIVIDE 9000 24.8 22.4 111 24.2 23.3 104 TRIPLE PEAK 8500 23.7 21.0 113 24.9 27.0 92 ----- ----- Basin wide percent of average 113 99 LOWER GREEN RIVER HAMS FORK 7840 11.4 10.1 113 9.7 11.5 84 HEWINTA 9500 9.4 8.1 116 11.9 9.9 120 HICKERSON PARK 9150 5.7 4.8 119 8.1 7.0 116 HOLE-IN-ROCK 9150 5.9 4.3 137 8.6 7.0 123 INDIAN CREEK 9425 25.0 22.1 113 20.7 21.8 95 KELLEY R.S. 8180 14.6 13.6 107 16.3 16.2 101 STEEL CREEK PARK 10100 12.1 12.0 101 14.0 10.0 140 ----- ----- Basin wide percent of average 112 107 UPPER BEAR RIVER BUG LAKE 7950 18.4 16.2 114 16.9 15.3 110 HAYDEN FORK 9400 12.9 13.1 98 16.8 14.6 115 KELLEY R.S. 8180 14.6 13.6 107 16.3 16.2 101 LILY LAKE 9050 11.3 10.2 111 15.2 11.3 135 MONTE CRISTO 8960 22.8 22.2 103 22.6 20.0 113 SALT RIVER SUMMIT 7600 14.0 11.6 121 16.1 14.6 110 TRIAL LAKE 9960 17.5 20.1 87 18.3 18.9 97 ----- ----- Basin wide percent of average 104 110 ----------------------------------------------------------------------------- -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.