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: JANUARY 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 15.4 11.5 134 16.2 15.1 107 COTTONWOOD CREEK 7600 13.7 13.0 105 16.8 16.1 104 GRANITE CREEK 6770 12.3 11.3 109 14.3 16.0 89 GRASSY LAKE 7265 26.3 21.1 125 26.4 24.5 108 GROS VENTRE SUMMIT 8775 9.1 9.8 93 9.4 10.8 87 LEWIS LAKE DIVIDE 7860 25.0 20.9 120 25.7 25.0 103 PHILLIPS BENCH 8200 19.1 17.7 108 19.2 19.7 97 SALT RIVER SUMMIT 7600 8.6 8.2 105 10.8 11.4 95 SNAKE RIVER STATION 6920 14.5 11.4 127 17.6 17.3 102 SPRING CREEK DIVIDE 9000 16.5 16.8 98 16.9 18.0 94 THUMB DIVIDE 7980 14.6 10.5 139 14.5 14.2 102 TOGWOTEE PASS 9580 -M 15.7 * 19.3 18.7 103 TWO OCEAN PLATEAU 9360 23.6 17.1 138 20.5 20.9 98 WILLOW CREEK 8450 19.1 19.3 99 24.2 21.2 114 ----- ----- Basin wide percent of average 115 101 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 18.4 15.1 122 16.5 11.3 146 BLACK BEAR 7950 30.5 22.6 135 -M 24.4 * CANYON 7940 11.8 7.7 153 12.7 9.2 138 FISHER CREEK 9100 26.9 22.4 120 23.2 22.7 102 MADISON PLATEAU 7750 -M 14.8 * 18.1 16.0 113 NORTHEAST ENTRANCE 7350 8.4 5.9 142 10.2 7.7 132 PARKER PEAK 9400 16.0 13.5 119 -M 9.8 * SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165 THUMB DIVIDE 7980 14.6 10.5 139 14.5 14.2 102 TWO OCEAN PLATEAU 9360 23.6 17.1 138 20.5 20.9 98 WHISKEY CREEK 6800 13.1 10.3 127 15.4 13.3 116 WHITE MILL 8700 17.9 15.7 114 16.3 17.8 92 WOLVERINE 7650 11.5 7.3 158 9.7 8.3 117 ----- ----- Basin wide percent of average 130 115 WIND RIVER BURROUGHS CREEK 8750 11.6 9.7 120 12.7 10.6 120 COLD SPRINGS 9630 6.3 5.5 115 7.9 6.6 120 DEER PARK 9700 9.9 -M * 13.5 -M * HOBBS PARK 10100 10.3 9.5 108 10.3 8.7 118 LITTLE WARM 9620 8.4 6.7 125 9.5 8.4 113 SOUTH PASS 9040 11.0 10.7 103 12.4 10.2 122 ST. LAWRENCE ALT 8620 4.4 4.5 98 7.2 6.0 120 TOGWOTEE PASS 9580 -M 15.7 * 19.3 18.7 103 TOWNSEND CREEK 8700 5.4 5.8 93 7.9 7.3 108 ----- ----- Basin wide percent of average 110 114 BIGHORN BASIN BALD MTN. 9375 13.8 13.1 105 12.7 11.0 115 BEAR TRAP MEADOW 7900 4.6 4.6 100 7.1 5.2 137 BLACKWATER 9780 20.3 13.1 155 17.9 11.4 157 BONE SPRINGS DIV 9350 -M 10.0 * 10.2 8.8 116 EVENING STAR 9200 23.4 16.8 139 24.3 14.3 170 GRAVE SPRINGS 8550 4.6 5.8 79 7.7 6.1 126 KIRWIN 9550 8.0 6.3 127 9.2 6.4 144 MARQUETTE 8760 -M 4.9 * 6.4 5.6 114 MIDDLE POWDER 7760 4.7 7.4 64 10.8 7.4 146 OWL CREEK 8975 -M 2.6 * 4.3 3.6 119 POWDER RIVER PASS 9480 8.2 6.6 124 10.3 7.3 141 SHELL CREEK 9580 11.9 9.7 123 10.9 8.3 131 SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165 SYLVAN ROAD 8120 12.3 7.9 156 14.2 10.4 137 TIMBER CREEK 7950 3.6 3.4 106 5.6 4.0 140 YOUNTS PEAK 8350 14.7 11.5 128 12.7 10.6 120 ----- ----- Basin wide percent of average 123 139 SHOSHONE RIVER BLACKWATER 9780 20.3 13.1 155 17.9 11.4 157 EVENING STAR 9200 23.4 16.8 139 24.3 14.3 170 KIRWIN 9550 8.0 6.3 127 9.2 6.4 144 MARQUETTE 8760 -M 4.9 * 6.4 5.6 114 SYLVAN LAKE 8420 18.1 14.0 129 20.5 12.4 165 SYLVAN ROAD 8120 12.3 7.9 156 14.2 10.4 137 YOUNTS PEAK 8350 14.7 11.5 128 12.7 10.6 120 ----- ----- Basin wide percent of average 139 148 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.6 4.6 100 7.1 5.2 137 BIG GOOSE 7990 3.6 -M * 6.6 -M * BONE SPRINGS DIV 9350 -M 10.0 * 10.2 8.8 116 BURGESS JUNCTION 7880 5.1 7.1 72 7.2 6.8 106 CLOUD PEAK RESERVOIR 9860 9.2 7.5 123 7.0 7.6 92 DOME LAKE 8880 5.4 8.4 64 7.3 8.3 88 GRAVE SPRINGS 8550 4.6 5.8 79 7.7 6.1 126 HANSEN SAWMILL 8760 3.3 4.3 77 5.8 4.8 121 MIDDLE POWDER 7760 4.7 7.4 64 10.8 7.4 146 POWDER RIVER PASS 9480 8.2 6.6 124 10.3 7.3 141 SUCKER CREEK 8880 6.6 7.0 94 8.5 8.1 105 TIE CREEK 6870 2.2 -M * 5.9 6.5 91 ----- ----- Basin wide percent of average 88 114 BELLE FOURCHE BLIND PARK 6890 5.0 6.8 74 12.0 5.8 207 NORTH RAPID CREEK 6130 3.9 -M * 10.4 -M * WARREN PEAK 6520 5.9 6.8 87 10.8 4.9 220 ----- ----- Basin wide percent of average 80 213 UPPER N. PLATTE RIVER COLUMBINE 9400 13.4 14.6 92 15.0 15.1 99 DIVIDE PEAK 8800 12.0 12.5 96 17.6 15.2 116 ELK RIVER 8700 -M 11.6 * 15.5 11.7 132 JOE WRIGHT 10120 14.0 13.2 106 19.1 15.4 124 NORTH FRENCH CREEK 10100 19.3 15.0 129 19.9 14.2 140 OLD BATTLE 10000 17.4 19.2 91 23.4 18.2 129 SOUTH BRUSH CREEK 8400 6.1 6.6 92 14.4 10.5 137 TOWER 10500 26.7 27.8 96 26.0 22.4 116 WEBBER SPRINGS 9200 12.4 16.3 76 17.2 15.8 109 WILLOW CREEK PASS 9540 7.4 7.0 106 9.0 7.4 122 ----- ----- Basin wide percent of average 97 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 13.2 15.2 87 15.6 11.3 138 CASPER MTN. 7900 5.5 8.9 62 11.1 8.3 134 DEADMAN HILL 10220 12.7 10.4 122 13.2 9.6 138 DEER PARK 9700 9.9 -M * 13.5 -M * LAPRELE CREEK 8320 2.3 6.2 37 9.1 7.0 130 RENO HILL 8400 7.6 7.9 96 11.8 11.0 107 ROACH 9700 11.8 10.3 115 14.6 13.3 110 SAND LAKE 10080 21.2 19.9 107 20.2 12.2 166 SOUTH PASS 9040 11.0 10.7 103 12.4 10.2 122 WINDY PEAK 7840 3.0 4.2 71 8.6 5.5 156 ----- ----- Basin wide percent of average 94 132 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.0 6.8 103 11.7 10.1 116 DIVIDE PEAK 8800 12.0 12.5 96 17.6 15.2 116 OLD BATTLE 10000 17.4 19.2 91 23.4 18.2 129 SANDSTONE RS 8150 7.5 8.6 87 14.0 12.3 114 WHISKEY PARK 8950 16.2 17.2 94 20.1 18.1 111 ----- ----- Basin wide percent of average 93 117 UPPER GREEN RIVER BIG SANDY OPENING 9100 10.3 8.9 116 9.6 11.1 86 BLIND BULL SUM 8650 17.7 17.7 100 14.7 15.5 95 EAST RIM DIVIDE 7930 8.3 8.5 98 8.8 10.3 85 ELKHART PARK G.S. 9400 8.4 8.3 101 9.1 10.9 83 GROS VENTRE SUMMIT 8775 9.1 9.8 93 9.4 10.8 87 KENDALL R.S. 7740 9.1 9.2 99 9.6 10.5 91 LOOMIS PARK 8240 9.9 10.7 93 12.7 12.8 99 NEW FORK LAKE 8340 7.4 7.2 103 7.5 9.9 76 SNIDER BASIN 8250 8.8 9.1 97 9.3 10.3 90 SPRING CREEK DIVIDE 9000 16.5 16.8 98 16.9 18.0 94 TRIPLE PEAK 8500 15.9 16.0 99 17.7 21.1 84 ----- ----- Basin wide percent of average 99 89 LOWER GREEN RIVER HAMS FORK 7840 7.1 7.4 96 6.9 9.1 76 HEWINTA 9500 5.8 5.7 102 8.5 7.9 108 HICKERSON PARK 9150 3.6 3.3 109 6.2 5.7 109 HOLE-IN-ROCK 9150 4.1 3.0 137 6.8 5.7 119 INDIAN CREEK 9425 15.7 16.6 95 13.5 17.0 79 KELLEY R.S. 8180 9.5 9.8 97 11.1 12.7 87 STEEL CREEK PARK 10100 8.4 9.3 90 10.4 8.2 127 ----- ----- Basin wide percent of average 98 96 UPPER BEAR RIVER BUG LAKE 7950 9.7 12.1 80 11.1 12.1 92 HAYDEN FORK 9400 8.3 9.6 86 11.6 11.2 104 KELLEY R.S. 8180 9.5 9.8 97 11.1 12.7 87 LILY LAKE 9050 7.9 7.7 103 11.0 9.0 122 MONTE CRISTO 8960 14.1 16.1 88 15.8 15.6 101 SALT RIVER SUMMIT 7600 8.6 8.2 105 10.8 11.4 95 TRIAL LAKE 9960 10.4 14.9 70 11.4 14.3 80 ----- ----- Basin wide percent of average 87 96 ----------------------------------------------------------------------------- -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.