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 SUNDAY: JANUARY 17 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.0 10.4 115 14.2 13.8 103 COTTONWOOD CREEK 7600 10.6 11.8 90 13.8 14.7 94 GRANITE CREEK 6770 8.9 10.1 88 10.8 14.6 74 GRASSY LAKE 7265 21.2 19.0 112 21.9 22.4 98 GROS VENTRE SUMMIT 8775 7.1 8.9 80 7.6 9.9 77 LEWIS LAKE DIVIDE 7860 19.7 18.7 105 21.4 22.8 94 PHILLIPS BENCH 8200 15.3 15.8 97 15.8 17.9 88 SALT RIVER SUMMIT 7600 6.0 7.2 83 8.3 10.5 79 SNAKE RIVER STATION 6920 11.4 10.3 111 14.2 15.8 90 SPRING CREEK DIVIDE 9000 12.9 15.1 85 13.3 16.4 81 THUMB DIVIDE 7980 11.9 9.5 125 12.0 13.0 92 TOGWOTEE PASS 9580 -M 14.3 * 16.9 17.1 99 TWO OCEAN PLATEAU 9360 20.1 15.7 128 17.9 19.1 94 WILLOW CREEK 8450 14.5 17.3 84 19.8 19.3 103 ----- ----- Basin wide percent of average 101 91 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.5 14.0 118 14.8 10.4 142 BLACK BEAR 7950 25.8 20.4 126 22.8 22.0 104 CANYON 7940 10.0 7.0 143 11.0 8.4 131 FISHER CREEK 9100 24.4 20.3 120 21.7 20.4 106 MADISON PLATEAU 7750 -M 13.4 * 16.2 14.6 111 NORTHEAST ENTRANCE 7350 7.3 5.3 138 9.1 7.1 128 PARKER PEAK 9400 14.2 12.6 113 -M 9.1 * SYLVAN LAKE 8420 15.7 13.0 121 18.1 11.6 156 THUMB DIVIDE 7980 11.9 9.5 125 12.0 13.0 92 TWO OCEAN PLATEAU 9360 20.1 15.7 128 17.9 19.1 94 WHISKEY CREEK 6800 10.9 9.3 117 13.4 12.1 111 WHITE MILL 8700 15.7 14.4 109 14.3 16.2 88 WOLVERINE 7650 10.0 6.7 149 8.2 7.6 108 ----- ----- Basin wide percent of average 123 110 WIND RIVER BURROUGHS CREEK 8750 9.7 8.9 109 10.6 9.8 108 COLD SPRINGS 9630 5.5 5.2 106 7.1 6.2 115 DEER PARK 9700 6.8 -M * 10.0 -M * HOBBS PARK 10100 8.7 9.0 97 8.8 8.1 109 LITTLE WARM 9620 7.4 6.2 119 8.4 7.8 108 SOUTH PASS 9040 7.9 10.0 79 9.4 9.4 100 ST. LAWRENCE ALT 8620 4.0 4.1 98 6.7 5.7 118 TOGWOTEE PASS 9580 -M 14.3 * 16.9 17.1 99 TOWNSEND CREEK 8700 4.6 5.4 85 7.1 6.8 104 ----- ----- Basin wide percent of average 98 106 BIGHORN BASIN BALD MTN. 9375 12.9 12.2 106 11.8 10.2 116 BEAR TRAP MEADOW 7900 4.1 4.3 95 6.6 4.9 135 BLACKWATER 9780 17.6 12.1 145 15.5 10.6 146 BONE SPRINGS DIV 9350 9.7 9.4 103 9.7 8.2 118 EVENING STAR 9200 21.1 15.7 134 22.0 13.1 168 GRAVE SPRINGS 8550 4.5 5.4 83 7.6 5.8 131 KIRWIN 9550 7.1 6.0 118 8.4 6.0 140 MARQUETTE 8760 4.9 4.6 107 5.8 5.3 109 MIDDLE POWDER 7760 4.7 6.9 68 10.8 6.9 157 OWL CREEK 8975 3.4 2.4 142 4.1 3.3 124 POWDER RIVER PASS 9480 7.5 6.1 123 9.5 6.7 142 SHELL CREEK 9580 11.0 9.1 121 10.1 7.7 131 SYLVAN LAKE 8420 15.7 13.0 121 18.1 11.6 156 SYLVAN ROAD 8120 10.5 7.2 146 12.4 9.6 129 TIMBER CREEK 7950 3.3 3.1 106 5.3 3.8 139 YOUNTS PEAK 8350 12.6 10.7 118 10.8 9.7 111 ----- ----- Basin wide percent of average 117 137 SHOSHONE RIVER BLACKWATER 9780 17.6 12.1 145 15.5 10.6 146 EVENING STAR 9200 21.1 15.7 134 22.0 13.1 168 KIRWIN 9550 7.1 6.0 118 8.4 6.0 140 MARQUETTE 8760 4.9 4.6 107 5.8 5.3 109 SYLVAN LAKE 8420 15.7 13.0 121 18.1 11.6 156 SYLVAN ROAD 8120 10.5 7.2 146 12.4 9.6 129 YOUNTS PEAK 8350 12.6 10.7 118 10.8 9.7 111 ----- ----- Basin wide percent of average 129 141 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.1 4.3 95 6.6 4.9 135 BIG GOOSE 7990 3.5 -M * 6.4 -M * BONE SPRINGS DIV 9350 9.7 9.4 103 9.7 8.2 118 BURGESS JUNCTION 7880 5.0 6.6 76 7.0 6.4 109 CLOUD PEAK RESERVOIR 9860 9.4 6.9 136 8.0 7.1 113 DOME LAKE 8880 5.1 7.8 65 7.2 7.8 92 GRAVE SPRINGS 8550 4.5 5.4 83 7.6 5.8 131 HANSEN SAWMILL 8760 3.3 4.0 82 5.6 4.5 124 MIDDLE POWDER 7760 4.7 6.9 68 10.8 6.9 157 POWDER RIVER PASS 9480 7.5 6.1 123 9.5 6.7 142 SUCKER CREEK 8880 6.3 6.4 98 8.4 7.6 111 TIE CREEK 6870 2.1 -M * 5.6 6.1 92 ----- ----- Basin wide percent of average 93 119 BELLE FOURCHE BLIND PARK 6890 4.6 6.3 73 11.6 5.5 211 NORTH RAPID CREEK 6130 3.8 -M * 10.4 -M * WARREN PEAK 6520 5.7 6.3 90 10.7 4.6 233 ----- ----- Basin wide percent of average 82 221 UPPER N. PLATTE RIVER COLUMBINE 9400 10.0 13.2 76 11.9 13.7 87 DIVIDE PEAK 8800 9.4 11.6 81 15.2 14.1 108 ELK RIVER 8700 7.0 10.5 67 12.3 10.7 115 JOE WRIGHT 10120 10.2 12.3 83 15.1 14.1 107 NORTH FRENCH CREEK 10100 16.3 13.9 117 17.9 13.1 137 OLD BATTLE 10000 13.2 17.8 74 19.3 16.9 114 SOUTH BRUSH CREEK 8400 5.4 6.0 90 13.2 10.3 128 TOWER 10500 20.5 25.2 81 21.0 20.5 102 WEBBER SPRINGS 9200 9.2 15.0 61 14.1 15.0 94 WILLOW CREEK PASS 9540 5.0 6.6 76 7.0 7.0 100 ----- ----- Basin wide percent of average 80 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 14.2 70 12.8 10.4 123 CASPER MTN. 7900 4.8 8.3 58 10.5 7.9 133 DEADMAN HILL 10220 9.2 9.7 95 10.7 8.9 120 DEER PARK 9700 6.8 -M * 10.0 -M * LAPRELE CREEK 8320 1.6 5.7 28 8.1 6.4 127 RENO HILL 8400 6.6 7.4 89 10.9 10.6 103 ROACH 9700 8.6 9.5 91 11.5 12.3 93 SAND LAKE 10080 17.9 18.4 97 17.7 11.3 157 SOUTH PASS 9040 7.9 10.0 79 9.4 9.4 100 WINDY PEAK 7840 2.4 3.8 63 8.1 5.0 162 ----- ----- Basin wide percent of average 79 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.2 6.2 84 10.0 9.3 108 DIVIDE PEAK 8800 9.4 11.6 81 15.2 14.1 108 OLD BATTLE 10000 13.2 17.8 74 19.3 16.9 114 SANDSTONE RS 8150 5.5 7.9 70 11.8 11.2 105 WHISKEY PARK 8950 11.8 15.8 75 16.5 16.0 103 ----- ----- Basin wide percent of average 76 108 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.7 8.0 96 7.2 10.1 71 BLIND BULL SUM 8650 13.5 16.2 83 11.1 13.9 80 EAST RIM DIVIDE 7930 6.2 7.6 82 6.7 9.4 71 ELKHART PARK G.S. 9400 6.3 7.6 83 6.9 9.9 70 GROS VENTRE SUMMIT 8775 7.1 8.9 80 7.6 9.9 77 KENDALL R.S. 7740 6.9 8.3 83 7.6 9.6 79 LOOMIS PARK 8240 8.3 9.6 86 9.9 11.7 85 NEW FORK LAKE 8340 5.5 6.4 86 6.0 9.0 67 SNIDER BASIN 8250 6.7 8.1 83 7.4 9.4 79 SPRING CREEK DIVIDE 9000 12.9 15.1 85 13.3 16.4 81 TRIPLE PEAK 8500 12.7 14.4 88 14.5 19.3 75 ----- ----- Basin wide percent of average 85 76 LOWER GREEN RIVER HAMS FORK 7840 4.7 6.5 72 5.2 8.3 63 HEWINTA 9500 3.6 5.2 69 6.3 7.4 85 HICKERSON PARK 9150 2.6 3.1 84 5.3 5.4 98 HOLE-IN-ROCK 9150 3.4 2.8 121 5.9 5.4 109 INDIAN CREEK 9425 11.7 15.2 77 10.2 15.5 66 KELLEY R.S. 8180 6.7 8.8 76 8.4 11.6 72 STEEL CREEK PARK 10100 5.5 8.7 63 7.7 7.7 100 ----- ----- Basin wide percent of average 76 80 UPPER BEAR RIVER BUG LAKE 7950 5.8 11.1 52 7.7 11.2 69 HAYDEN FORK 9400 5.3 8.9 60 8.7 10.4 84 KELLEY R.S. 8180 6.7 8.8 76 8.4 11.6 72 LILY LAKE 9050 -M 7.3 * -M 8.4 * MONTE CRISTO 8960 9.3 14.7 63 11.9 14.5 82 SALT RIVER SUMMIT 7600 6.0 7.2 83 8.3 10.5 79 TRIAL LAKE 9960 5.8 13.9 42 7.0 13.2 53 ----- ----- Basin wide percent of average 60 73 ----------------------------------------------------------------------------- -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.