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 FRIDAY: JANUARY 1 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 8.8 7.9 111 10.8 11.2 96 COTTONWOOD CREEK 7600 8.9 8.8 101 11.9 11.9 100 GRANITE CREEK 6770 7.0 7.2 97 9.0 11.8 76 GRASSY LAKE 7265 15.6 14.3 109 17.1 18.2 94 GROS VENTRE SUMMIT 8775 6.3 6.9 91 6.7 8.0 84 LEWIS LAKE DIVIDE 7860 14.5 13.8 105 17.1 18.5 92 PHILLIPS BENCH 8200 12.0 11.5 104 12.6 14.3 88 SALT RIVER SUMMIT 7600 5.0 5.1 98 7.4 8.5 87 SNAKE RIVER STATION 6920 7.9 7.6 104 10.5 12.8 82 SPRING CREEK DIVIDE 9000 10.7 11.6 92 11.5 13.3 86 THUMB DIVIDE 7980 10.1 7.2 140 10.3 10.5 98 TOGWOTEE PASS 9580 11.4 11.1 103 13.3 13.8 96 TWO OCEAN PLATEAU 9360 16.2 12.6 129 14.8 15.5 95 WILLOW CREEK 8450 12.1 12.8 95 17.3 15.6 111 ----- ----- Basin wide percent of average 106 93 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 11.7 11.5 102 10.7 8.5 126 BLACK BEAR 7950 20.1 15.6 129 19.5 17.2 113 CANYON 7940 7.6 5.3 143 8.7 6.9 126 FISHER CREEK 9100 18.0 15.6 115 16.3 16.0 102 MADISON PLATEAU 7750 -M 10.1 * 13.3 11.7 114 NORTHEAST ENTRANCE 7350 5.0 4.0 125 6.7 5.8 116 PARKER PEAK 9400 11.1 10.6 105 -M 7.6 * SYLVAN LAKE 8420 11.7 10.8 108 14.0 9.8 143 THUMB DIVIDE 7980 10.1 7.2 140 10.3 10.5 98 TWO OCEAN PLATEAU 9360 16.2 12.6 129 14.8 15.5 95 WHISKEY CREEK 6800 8.4 7.0 120 10.7 9.7 110 WHITE MILL 8700 11.3 11.4 99 10.7 12.8 84 WOLVERINE 7650 8.2 5.2 158 6.5 6.4 102 ----- ----- Basin wide percent of average 119 109 WIND RIVER BURROUGHS CREEK 8750 8.0 7.1 113 8.8 8.1 109 COLD SPRINGS 9630 5.1 4.4 116 6.6 5.5 120 DEER PARK 9700 6.2 -M * 9.2 -M * HOBBS PARK 10100 8.2 7.7 106 8.6 6.9 125 LITTLE WARM 9620 6.3 5.1 124 7.3 6.6 111 SOUTH PASS 9040 7.1 8.3 86 8.6 8.0 108 ST. LAWRENCE ALT 8620 3.9 3.3 118 6.6 5.0 132 TOGWOTEE PASS 9580 11.4 11.1 103 13.3 13.8 96 TOWNSEND CREEK 8700 4.4 4.5 98 7.0 5.8 121 ----- ----- Basin wide percent of average 106 112 BIGHORN BASIN BALD MTN. 9375 8.2 10.2 80 8.1 8.7 93 BEAR TRAP MEADOW 7900 3.0 3.7 81 6.2 4.3 144 BLACKWATER 9780 15.1 9.9 153 13.2 8.8 150 BONE SPRINGS DIV 9350 6.9 7.8 88 7.4 6.9 107 EVENING STAR 9200 16.0 12.9 124 16.6 10.8 154 GRAVE SPRINGS 8550 3.2 4.5 71 6.4 5.1 125 KIRWIN 9550 6.7 5.2 129 7.8 5.2 150 MARQUETTE 8760 5.1 3.8 134 6.3 4.7 134 MIDDLE POWDER 7760 3.3 5.7 58 9.8 6.0 163 OWL CREEK 8975 3.6 1.9 189 4.5 2.8 161 POWDER RIVER PASS 9480 4.8 5.1 94 6.8 5.6 121 SHELL CREEK 9580 7.5 7.5 100 6.5 6.4 102 SYLVAN LAKE 8420 11.7 10.8 108 14.0 9.8 143 SYLVAN ROAD 8120 7.7 5.8 133 9.4 8.0 118 TIMBER CREEK 7950 3.3 2.4 138 5.3 3.3 161 YOUNTS PEAK 8350 10.1 8.9 113 9.0 8.0 112 ----- ----- Basin wide percent of average 110 132 SHOSHONE RIVER BLACKWATER 9780 15.1 9.9 153 13.2 8.8 150 EVENING STAR 9200 16.0 12.9 124 16.6 10.8 154 KIRWIN 9550 6.7 5.2 129 7.8 5.2 150 MARQUETTE 8760 5.1 3.8 134 6.3 4.7 134 SYLVAN LAKE 8420 11.7 10.8 108 14.0 9.8 143 SYLVAN ROAD 8120 7.7 5.8 133 9.4 8.0 118 YOUNTS PEAK 8350 10.1 8.9 113 9.0 8.0 112 ----- ----- Basin wide percent of average 126 138 POWDER-TONGUE BEAR TRAP MEADOW 7900 3.0 3.7 81 6.2 4.3 144 BIG GOOSE 7990 3.0 -M * 6.3 -M * BONE SPRINGS DIV 9350 6.9 7.8 88 7.4 6.9 107 BURGESS JUNCTION 7880 3.7 5.5 67 5.8 5.6 104 CLOUD PEAK RESERVOIR 9860 6.8 5.6 121 7.2 6.1 118 DOME LAKE 8880 4.0 6.3 63 5.8 6.9 84 GRAVE SPRINGS 8550 3.2 4.5 71 6.4 5.1 125 HANSEN SAWMILL 8760 3.1 3.3 94 5.1 3.9 131 MIDDLE POWDER 7760 3.3 5.7 58 9.8 6.0 163 POWDER RIVER PASS 9480 4.8 5.1 94 6.8 5.6 121 SUCKER CREEK 8880 4.6 5.2 88 7.3 6.5 112 TIE CREEK 6870 1.1 -M * 4.3 5.4 80 ----- ----- Basin wide percent of average 82 116 BELLE FOURCHE BLIND PARK 6890 2.1 5.3 40 9.0 4.8 188 NORTH RAPID CREEK 6130 2.1 -M * 8.8 -M * WARREN PEAK 6520 2.3 5.3 43 8.3 3.9 213 ----- ----- Basin wide percent of average 42 199 UPPER N. PLATTE RIVER COLUMBINE 9400 6.7 9.8 68 9.3 10.8 86 DIVIDE PEAK 8800 7.3 9.5 77 13.8 11.9 116 ELK RIVER 8700 3.6 8.1 44 10.4 8.8 118 JOE WRIGHT 10120 7.0 10.4 67 11.5 11.6 99 NORTH FRENCH CREEK 10100 11.6 11.4 102 14.0 10.9 128 OLD BATTLE 10000 10.9 14.8 74 16.0 14.2 113 SOUTH BRUSH CREEK 8400 3.8 4.8 79 10.7 9.9 108 TOWER 10500 14.8 21.8 68 16.6 16.7 99 WEBBER SPRINGS 9200 7.0 12.2 57 11.6 13.2 88 WILLOW CREEK PASS 9540 4.4 5.7 77 6.5 6.1 107 ----- ----- Basin wide percent of average 71 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.0 12.0 58 9.6 8.6 112 CASPER MTN. 7900 3.7 7.5 49 9.5 7.1 134 DEADMAN HILL 10220 8.6 7.9 109 9.0 7.4 122 DEER PARK 9700 6.2 -M * 9.2 -M * LAPRELE CREEK 8320 1.1 4.7 23 7.3 5.1 143 RENO HILL 8400 5.2 6.2 84 9.9 9.7 102 ROACH 9700 6.1 7.7 79 9.3 10.2 91 SAND LAKE 10080 12.6 15.1 83 14.0 9.4 149 SOUTH PASS 9040 7.1 8.3 86 8.6 8.0 108 WINDY PEAK 7840 1.7 3.3 52 8.0 4.1 195 ----- ----- Basin wide percent of average 73 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.7 5.0 74 8.8 7.5 117 DIVIDE PEAK 8800 7.3 9.5 77 13.8 11.9 116 OLD BATTLE 10000 10.9 14.8 74 16.0 14.2 113 SANDSTONE RS 8150 -M 6.2 * -M 9.0 * WHISKEY PARK 8950 7.1 12.8 55 13.3 11.8 113 ----- ----- Basin wide percent of average 69 114 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.2 6.0 120 6.7 8.2 82 BLIND BULL SUM 8650 11.5 12.5 92 9.9 10.9 91 EAST RIM DIVIDE 7930 5.4 5.7 95 6.1 7.6 80 ELKHART PARK G.S. 9400 5.7 5.8 98 6.5 8.0 81 GROS VENTRE SUMMIT 8775 6.3 6.9 91 6.7 8.0 84 KENDALL R.S. 7740 6.0 5.9 102 6.8 7.8 87 LOOMIS PARK 8240 7.0 7.0 100 8.3 9.5 87 NEW FORK LAKE 8340 5.0 4.6 109 5.7 7.3 78 SNIDER BASIN 8250 5.7 6.0 95 6.6 7.6 87 SPRING CREEK DIVIDE 9000 10.7 11.6 92 11.5 13.3 86 TRIPLE PEAK 8500 10.9 10.9 100 12.3 15.6 79 ----- ----- Basin wide percent of average 98 84 LOWER GREEN RIVER HAMS FORK 7840 4.0 4.3 93 4.7 6.7 70 HEWINTA 9500 3.1 3.9 79 5.9 6.4 92 HICKERSON PARK 9150 2.3 2.6 88 5.2 4.8 108 HOLE-IN-ROCK 9150 2.9 2.3 126 5.5 4.8 115 INDIAN CREEK 9425 10.0 11.6 86 9.0 12.6 71 KELLEY R.S. 8180 5.9 6.7 88 7.6 9.4 81 STEEL CREEK PARK 10100 5.0 7.2 69 7.3 6.8 107 ----- ----- Basin wide percent of average 86 88 UPPER BEAR RIVER BUG LAKE 7950 5.3 8.8 60 6.8 9.5 72 HAYDEN FORK 9400 4.8 6.8 71 8.2 8.8 93 KELLEY R.S. 8180 5.9 6.7 88 7.6 9.4 81 LILY LAKE 9050 4.7 6.2 76 7.7 7.2 107 MONTE CRISTO 8960 7.3 11.0 66 10.5 12.3 85 SALT RIVER SUMMIT 7600 5.0 5.1 98 7.4 8.5 87 TRIAL LAKE 9960 5.0 10.8 46 6.4 11.0 58 ----- ----- Basin wide percent of average 69 82 ----------------------------------------------------------------------------- -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.